REBAR TYING TOOL

Description

REFERENCE TO RELATED APPLICATIONS

This application claims priority from Japanese Patent Application No. 2024-62518 filed on Apr. 9, 2024 and Japanese Patent Application No. 2024-177384 filed on Oct. 9, 2024. The entire contents of the priority applications are incorporated herein by reference.

TECHNICAL FIELD

The art disclosed herein relates to a rebar tying tool.

BACKGROUND ART

A rebar tying tool is described in Japanese Patent Application Publication No. 2017-25700. The rebar tying tool includes: a feed unit configured to feed a wire; a guide unit configured to guide the wire such that the wire is wound around two or more rebars; a reel support member supporting a reel including the wire such that the reel is rotatable about a reel rotation axis; a wire guide member located between the feed unit and the reel support member and configured to guide the wire toward the feed unit; and a contact object configured to contact the wire in a front-rear direction.

SUMMARY

In the above-mentioned rebar tying tool, the contact object suppresses the wire from bending or buckling in the front-rear direction by contacting the wire in the front-rear direction when the wire sags or loosens. In this configuration, however, when the wire is guided by the wire guide member, the contact object cannot sufficiently regulate a path through which the wire is guided by the wire guide member. Due to this, curls which the wire is given will vary from wire to wire. Due to this, a trajectory of the wire fed from the feed unit will also vary from wire to wire, and the wire may be detached from the guide unit. The present teachings aim to provide an art configured to suppress the wire from being detached from the guide unit.

A rebar tying tool disclosed herein may comprise a feed unit configured to feed a wire, a guide unit configured to guide the wire such that the wire is wound around two or more rebars, a reel support member supporting a reel including the wire such that the reel is rotatable about a reel rotation axis, a wire guide member located between the feed unit and the reel support member and configured to guide the wire toward the feed unit, and a contact object configured to contact the wire in a direction in which the reel rotation axis extends, with the contact object located between the wire guide member and the reel support member.

According to the above configuration, the contact object contacts the wire in the direction along which the reel rotation axis extends, with the contact object located between the wire guide member and the reel support member. Due to this, the path along which the wire is guided by the wire guide member is regulated by the contact object to the direction along which the reel rotation axis extends. As a result of this, variation in curls which the wire is given can be suppressed. Due to this, variation in the trajectories of the wire fed by the feed unit can be suppressed, by which the wire can be suppressed from being detached from the guide unit.

A rebar tying tool disclosed herein may comprise a feed unit configured to feed a wire, a guide unit configured to guide the wire such that the wire is wound around two or more rebars, a reel support member supporting a reel including the wire such that the reel is rotatable about a reel rotation axis, a wire guide member located between the feed unit and the reel support member and configured to guide the wire toward the feed unit, a contact object configured to contact the wire with the contact object located between the wire guide member and the reel support member, and a reel stopper configured to be switched between a prohibiting state in which the reel stopper prohibits the reel from being detached from the reel support member and a permitting state in which the reel stopper permits the reel to be detached from the reel support member. When the reel stopper is switched from the permitting state to the prohibiting state, the reel stopper may move in a first direction. The contact object is disposed on the reel stopper. When the reel stopper is in the prohibiting state, the contact object may be configured contact the wire in the first direction with the contact object located between the wire guide member and the reel support member.

According to the above configuration, the contact object contacts the wire in the first direction, with the contact object located between the wire guide member and the reel support member. Due to this, the path along which the wire is guided by the wire guide member is regulated by the contact object to the first direction. As a result of this, variation in curls given to the wire can be suppressed. Due to this, variation in the trajectories of the wire fed by the feed unit can be suppressed, by which the wire can be suppressed from being detached from the guide unit.

A rebar tying tool disclosed herein may comprise a feed unit configured to feed a wire, a guide unit configured to guide the wire such that the wire is wound around two or more rebars, a reel support member supporting a reel including the wire such that the reel is rotatable about a reel rotation axis, a wire guide member located between the feed unit and the reel support member and configured to guide the wire toward the feed unit, a contact object configured to contact the wire with the contact object located between the wire guide member and the reel support member, and a reel stopper configured to be switched between a prohibiting state in which the reel stopper prohibits the reel from being detached from the reel support member and a permitting state in which the reel stopper permits the reel to be detached from the reel support member. The wire guide member may comprise a wire guide hole through which the wire is configured to pass. In a view of the rebar tying tool along a line connecting a center of an inlet of the wire guide hole and a center of an outlet of the wire guide hole, when the reel stopper is in the prohibiting state, the contact object may block a part of the inlet of the wire guide hole, and when the reel stopper is in the permitting state, the contact object may not block the inlet of the wire guide hole, or may block a part of the inlet such that an area of a blocked portion of the inlet that is blocked by the contact object in the permitting state is smaller than an area of a blocked portion of the inlet that is blocked by the contact object when the reel stopper is in the prohibiting state.

According to the above configuration, the contact body blocks a part of the inlet of the wire guide hole when the reel stopper is in the prohibiting state. As a result, the path along which the wire passes through the wire guide hole is regulated by the contact object. As a result, variation in curls given to the wire can be suppressed. This can in turn suppress the variation in the trajectories of the wire fed from the feed unit, and can suppress the wire from being detached from the guide unit. Also, when the reel stopper is in the permitting state, the contact object does not block the inlet of the wire guide hole, or the area of the blocked portion of the inlet that is blocked by the contact object is smaller than the area of the blocked portion of the inlet that is blocked by the contact object when the reel stopper is in the prohibiting state. This facilitates insertion of the wire into the inlet of the wire guide hole.

A rebar tying tool disclosed herein may comprise a feed unit configured to feed a wire, a guide unit configured to guide the wire such that the wire is wound around two or more rebars, a reel support member supporting a reel including the wire such that the reel is rotatable about a reel rotation axis, and a wire guide wall located between the feed unit and the reel support member and configured to guide the wire toward the feed unit. The reel may comprise a bobbin including a bobbin body around which the wire is wound, a first flange located at one end of the bobbin body in a direction in which the reel rotation axis extends, and a second flange located at the other end of the bobbin body in the direction in which the reel rotation axis extends. The wire guide wall may comprise a first wire contact portion configured to contact the wire when the wire is drawn out from a position adjacent to the first flange and a second wire contact portion configured to contact the wire when the wire is drawn out from a position adjacent to the second flange. When a direction in which the wire moving toward the feed unit passes through the wire guide wall is defined as a second direction and a direction opposite to the second direction is defined as a third direction, each of the first wire contact portion and the second wire contact portion may be offset to the third direction as they are seen along a virtual plane bisecting the wire guide wall in the second direction and the third direction.

According to the above configuration, the path along which the wire is guided by the wire guide wall is regulated by the first wire contact portion and the second wire contact portion. As a result, variation in the curls given to the wire can be suppressed. This can in turn suppress variation in the trajectories of the wire fed from the feed unit, and suppress the wire from being detached from the guide unit. In addition, the first wire contact portion and the second wire contact portion are both located in the third direction (i.e., the direction approaching the bobbin) when viewed along the virtual plane bisecting the wire guide wall in the second and third directions. Due to this, each of the first wire contact portion and the second wire contact portion contacts the wire in a position close to the bobbin. This allows the trajectory of the wire drawn out from the bobbin to be stabilized from immediately after the wire is drawn out from the bobbin.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 illustrates a perspective view of a rebar tying tool 2 according to a first embodiment.

FIG. 2 illustrates a left side view of the rebar tying tool 2 of the first embodiment under a state where a reel cover 6 and a left housing 10 are removed.

FIG. 3 illustrates a cross-sectional view of the rebar tying tool 2 of the first embodiment, seeing a reel support portion 22 and its surroundings.

FIG. 4 illustrates a perspective view of the rebar tying tool 2 of the first embodiment, seeing the reel cover 6 in a permitting state.

FIG. 5 illustrates a front cross-sectional view of the rebar tying tool 2 of the first embodiment, seeing a wire guide member 52 and its surroundings when the reel cover 6 is in a prohibiting state.

FIG. 6 illustrates a front view of a reel RL, a feed unit 50, the wire guide member 52, a guide unit 54, a twisting unit 58, and a contact object 130 in the first embodiment.

FIG. 7 illustrates a cross-sectional view of the twisting unit 58 and a rotation regulation unit 60 in the first embodiment.

FIG. 8 illustrates a right cross-sectional view of a lateral plate 106, a slide unit 108, and a detection sensor 110 in the first embodiment.

FIG. 9 illustrates a top cross-sectional view of the rebar tying tool 2 of the first embodiment, seeing a slide plate 112 and its surroundings.

FIG. 10 illustrates a left cross-sectional view of the rebar tying tool 2 of the first embodiment, seeing the wire guide member 52 and its surroundings when the reel cover 6 is in the prohibiting state.

FIG. 11 illustrates a front cross-sectional view of the rebar tying tool 2 of the first embodiment, seeing the wire guide member 52 and its surroundings when the reel cover 6 is in the permitting state.

FIG. 12 illustrates a front view of the rebar tying tool 2 of the first embodiment, seeing the wire guide member 52, the contact object 130, and the reel RL.

FIG. 13 illustrates a front cross-sectional view of a rebar tying tool 2 of a second embodiment, seeing a wire guide member 52 and its surroundings when a reel cover 6 is in the prohibiting state.

FIG. 14 illustrates a left cross-sectional view of a rebar tying tool 2 of a third embodiment, seeing a wire guide member 52 and its surroundings when a reel cover 6 is in the prohibiting state.

FIG. 15 illustrates a front cross-sectional view of a rebar tying tool 2 of a fourth embodiment, seeing a wire guide member 52 and its surroundings when a reel cover 6 is in the permitting state.

FIG. 16 illustrates a front cross-sectional view of a rebar tying tool 2 of the fourth embodiment, seeing the wire guide member 52 and its surroundings when the reel cover 6 is in the prohibiting state.

FIG. 17 illustrates a left cross-sectional view of a rebar tying tool 2 of a fifth embodiment, seeing a wire guide member 52 and its surroundings when a reel cover 6 is in the prohibiting state.

FIG. 18 illustrates a perspective view of a rebar tying tool 2 of a sixth embodiment, seeing a contact object 130 and its surroundings.

FIG. 19 illustrates a front cross-sectional view of a rebar tying tool 2 of a seventh embodiment, seeing a wire guide member 52 and its surroundings when a reel cover 6 is in the prohibiting state.

FIG. 20 illustrates a front cross-sectional view of a rebar tying tool 2 of an eighth embodiment, seeing a wire guide wall 404 and its surroundings when the reel cover 6 is in the prohibiting state.

FIG. 21 illustrates a perspective view of the rebar tying tool 2 of the eighth embodiment, seeing the wire guide wall 404 and its surroundings from the front, left, and lower side.

FIG. 22 illustrates a configuration of a contact object 430 in the rebar tying tool 2 of the eighth embodiment.

FIG. 23 illustrates a front cross-sectional view of a rebar tying tool 2 of a ninth embodiment, seeing a wire guide wall 504 and its surroundings when the reel cover 6 is in the prohibiting state.

FIG. 24 illustrates a perspective view of the rebar tying tool 2 of the ninth embodiment, seeing the wire guide wall 504 and its surroundings from the front, left, and lower side.

FIG. 25 illustrates a front cross-sectional view of a rebar tying tool 2 of a tenth embodiment, seeing a wire guide wall 604 and its surroundings when the reel cover 6 is in the prohibiting state.

FIG. 26 illustrates a perspective view of the rebar tying tool 2 of the tenth embodiment, seeing the wire guide wall 604 and its surroundings from the front, left, and lower side.

FIG. 27 illustrates how in the rebar tying tool 2 of the tenth embodiment a wire W drawn out from a spot adjacent to a left flange 28L is guided by the wire guide wall 604.

FIG. 28 illustrates how in the rebar tying tool 2 of the tenth embodiment the wire W drawn out from a spot adjacent to a right flange 28R is guided by the wire guide wall 604.

DESCRIPTION

Representative, non-limiting examples of the present disclosure will now be described in further detail with reference to the attached drawings. This detailed description is merely intended to teach a person of skill in the art further details for practicing aspects of the present teachings and is not intended to limit the scope of the present disclosure. Furthermore, each of the additional features and teachings disclosed below may be utilized separately or in conjunction with other features and teachings to provide improved rebar tying tools as well as methods for using and manufacturing the same.

Moreover, combinations of features and steps disclosed in the following detailed description may not be necessary to practice the present disclosure in the broadest sense, and are instead taught merely to particularly describe representative examples of the present disclosure. Furthermore, various features of the above-described and below-described representative examples, as well as the various independent and dependent claims, may be combined in ways that are not specifically and explicitly enumerated in order to provide additional useful embodiments of the present teachings.

All features disclosed in the description and/or the claims are intended to be disclosed separately and independently from each other for the purpose of original written disclosure, as well as for the purpose of restricting the claimed subject matter, independent of the compositions of the features in the embodiments and/or the claims. In addition, all value ranges or indications of groups of entities are intended to disclose every possible intermediate value or intermediate entity for the purpose of original written disclosure, as well as for the purpose of restricting the claimed subject matter.

A rebar tying tool disclosed herein may comprise a feed unit configured to feed a wire, a guide unit configured to guide the wire such that the wire is wound around two or more rebars, a reel support member supporting a reel including the wire such that the reel is rotatable about a reel rotation axis, a wire guide member located between the feed unit and the reel support member and configured to guide the wire toward the feed unit, and a contact object configured to contact the wire in a direction in which the reel rotation axis extends, with the contact object located between the wire guide member and the reel support member.

In one or more embodiments, the rebar tying tool may further comprise a reel stopper configured to be switched between a prohibiting state in which the reel stopper prohibits the reel from being detached from the reel support member and a permitting state in which the reel stopper permits the reel to be detached from the reel support member. The contact object may be disposed on the reel stopper and configured to contact the wire when the reel stopper is in the prohibiting state.

According to the above configuration, by switching the reel stopper from the permitting state to the prohibiting state, the contact object can be set in a state capable of contacting the wire.

In one or more embodiments, when the reel stopper is switched from the permitting state to the prohibiting state, the reel stopper may move in a first direction. When the reel stopper is in the prohibiting state, the contact object may be configured to contact the wire in the first direction with the contact object located between the wire guide member and the reel support member.

According to the above configuration, the path along which the wire is guided by the wire guide member is regulated to the first direction by the contact object. Due to this, variation in curls given to the wire can be suppressed. This can in turn make it possible to suppress the variation in the trajectories of the wire fed from the feed unit and suppress the wire from being detached from the guide unit.

In one or more embodiments, the wire guide member may comprise a wire guide hole through which the wire is configured to pass. In a view of the rebar tying tool along a line connecting a center of an inlet of the wire guide hole and a center of an outlet of the wire guide hole, when the reel stopper is in the prohibiting state, the contact object may block a part of the inlet of the wire guide hole, and when the reel stopper is in the permitting state, the contact object may not block the inlet of the wire guide hole, or may block a part of the inlet such that an area of a blocked portion of the inlet that is blocked by the contact object in the permitting state is smaller than an area of a blocked portion of the inlet that is blocked by the contact object when the reel stopper is in the prohibiting state.

According to the above configuration, the contact object blocks a part of the inlet of the wire guide hole when the reel stopper is in the prohibiting state. Due to this, the path along which the wire passes through the wire guide hole is regulated by the contact object. As a result, variation in the curls given to the wire can be suppressed. This can in turn suppress variation in the trajectories of the wire fed from the feed unit, and suppress the wire from being detached from the guide unit. It also enables the user to easily insert the wire into the inlet of the wire guide hole when the reel stopper is in the permitting state.

In one or more embodiments, the rebar tying tool may further comprise a guide surface disposed along a rim of the inlet of the wire guide hole and configured to guide the wire into the inlet of the wire guide hole. The guide surface may face the contact object when the reel stopper is in the prohibiting state.

According to the above configuration, the guide surface can be utilized to easily guide the wire to the inlet of the wire guide hole.

In one or more embodiments, the rebar tying tool may further comprise a first guide wall separate from the wire guide member, wherein the first guide wall comprises the guide surface.

According to the above configuration, degree of freedom in design of the guide surface can be improved.

In one or more embodiments, the wire guide member may comprise the guide surface.

According to the above configuration, the number of components in the rebar tying tool can be reduced.

In one or more embodiments, when the reel stopper is in the prohibiting state, in the view of the rebar tying tool along the line connecting the center of the inlet of the wire guide hole and the center of the outlet of the wire guide hole, the contact object may block 50% or more an entire area of the inlet of the wire guide hole.

According to the above configuration, the contact object can easily contact the wire. Also, the path along which the wire is guided by the wire guide member can be further regulated by using the contact object. Due to this, variation in the curls given to the wire can be suppressed. Due to this, variation in the trajectories of the wire fed from the feed unit can be suppressed, and the wire can be further suppressed from being detached from the guide unit.

In one or more embodiments, the wire guide hole may comprise a frustum shape in which an entire area of the inlet is larger than an entire area of the outlet. When the reel stopper is in the prohibiting state, in the view of the rebar tying tool along the line connecting the center of the inlet of the wire guide hole and the center of the outlet of the wire guide hole, the contact object may block the inlet such that an area of a portion of the inlet that is not blocked by the contact object is less than the entire area of the outlet.

According to the above configuration, the contact object can easily contact the wire. Also, the path along which the wire is guided by the wire guide member can be further regulated by using the contact object. Due to this, variation in the curls given to the wire can be suppressed. Due to this, variation in the trajectories of the wire fed from the feed unit can be suppressed, and the wire can be further suppressed from being detached from the guide unit.

In one or more embodiments, the contact object may be configured to rotate with respect to the reel stopper.

According to the above configuration, an outer surface of the contact object can be suppressed from wearing out due to being abraded by the wire.

In one or more embodiments, the rebar tying tool may further comprise a housing supporting the reel stopper such that the reel stopper is configured to be switched between the prohibiting state and the permitting state. The contact object may comprise a body portion configured to rotate and a shaft portion extending through the body portion and supported by the reel stopper. When the reel stopper is in the prohibiting state, under a state where the shaft portion extends through the body portion, the shaft portion may be configured to contact the housing in a direction in which the shaft portion comes out of the body portion.

According to the above configuration, when the reel stopper is in the prohibiting state, the shaft portion can be suppressed from coming out of the body portion. Due to this, the contact object can be suppressed from being detached from the reel stopper when the reel stopper is in the prohibiting state.

In one or more embodiments, the contact object may be a roller. Each diameter at both ends of the contact object may be larger than a diameter at a center of the contact object.

According to the above configuration, the wire passes through a space defined around the center of the contact object. Due to this, the path along which the wire is guided by the wire guide member can be further regulated by using the contact object. Due to this, variation in the curls given to the wire can be further suppressed. Due to this, variation in the trajectories of the wire fed from the feed unit can be suppressed, and the wire can be further suppressed from being detached from the guide unit.

In one or more embodiments, the contact object may be integrally formed with the reel stopper.

According to the above configuration, the number of components in the rebar tying tool can be reduced.

In one or more embodiments, the rebar tying tool may further comprise a reel stopper configured to be switched between a prohibiting state in which the reel stopper prohibits the reel from being detached from the reel support member and a permitting state in which the reel stopper permits the reel to be detached from the reel support member, a housing supporting the reel stopper such that the reel stopper is configured to be switched between the prohibiting state and the permitting state and supporting the contact object such that the contact object can move, and an operation member supported by the reel stopper and configured to operate the contact object. When the reel stopper is switched from the permitting state to the prohibiting state, the operation member may operate the contact object to switch the contact object from a non-contact state in which the contact object is not in contact with the wire to a contact state in which the contact object is configured to contact the wire.

According to the above configuration, by operating the reel stopper, the user can switch the contact object from the non-contact state to the contact state without directly operating the operation member.

In one or more embodiments, the contact object may be made of a metal.

According to the above configuration, the contact object can be suppressed from wearing out due to the contact object contacting the wire.

A rebar tying tool disclosed herein may comprise a feed unit configured to feed a wire, a guide unit configured to guide the wire such that the wire is wound around two or more rebars, a reel support member supporting a reel including the wire such that the reel is rotatable about a reel rotation axis, and a wire guide wall located between the feed unit and the reel support member and configured to guide the wire toward the feed unit. The reel may comprise a bobbin including a bobbin body around which the wire is wound, a first flange located at one end of the bobbin body in a direction in which the reel rotation axis extends, and a second flange located at the other end of the bobbin body in the direction in which the reel rotation axis extends. The wire guide wall may comprise a first wire contact portion configured to contact the wire when the wire is drawn out from a position adjacent to the first flange and a second wire contact portion configured to contact the wire when the wire is drawn out from a position adjacent to the second flange. When a direction in which the wire moving toward the feed unit passes through the wire guide wall is defined as a second direction and a direction opposite to the second direction is defined as a third direction, each of the first wire contact portion and the second wire contact portion may be offset to the third direction as they are seen along a virtual plane bisecting the wire guide wall in the second direction and the third direction.

In one or more embodiments, when a direction from the second flange to the first flange along the direction in which the reel rotation axis extends is defined as a fourth direction and a direction from the first flange to the second flange along the direction in which the reel rotation axis extends is defined as a fifth direction, an end of the wire guide wall in the third direction, which is located in the fourth direction as viewed from the wire passing through the wire guide wall, may function as the first wire contact portion. An end of the wire guide wall in the third direction, which is located in the fifth direction as viewed from the wire passing through the wire guide wall, may function as the second wire contact portion.

According to the above configuration, each of the first wire contact portion and the second wire contact portion is positioned at a spot as close as possible to the bobbin in the wire guide wall. Thus, each of the first and second wire contact portions contacts the wire at the spot close to the bobbin. Due to this, the trajectory of the wire drawn out from the bobbin can be stabilized immediately after the wire is drawn out from the bobbin.

First Embodiment

As illustrated in FIG. 1, a rebar tying tool 2 is a hand-held apparatus. The rebar tying tool 2 ties plural rebars R with a wire W. Wires W with different diameters (e.g., diameter being 0.5 mm to 2.5 mm) are used in the rebar tying tool 2 depending on a diameter of the rebars R to be tied. For example, when the rebars R with a small diameter of 16 mm or less (e.g., diameter 16 mm) are to be tied, the wire W with a diameter of 1.6 mm or less (e.g., 0.8 mm) is used, and when the rebars R with a large diameter that is more than 16 mm (e.g., diameter 25 mm or 32 mm) are to be tied, the wire W with a diameter that is more than 1.6 mm (e.g., 2.0 mm) is used. Hereafter, a longitudinal direction of a twisting unit 58 (see FIG. 2) will be termed “front-rear direction”, a direction perpendicular to the front-rear direction will be termed “up-down direction”, and a direction perpendicular to both the front-rear and up-down directions will be termed “left-right direction”.

The rebar tying tool 2 comprises a body housing 4, a reel cover 6, and a battery pack BP. The body housing 4 and the reel cover 6 are constituted of, for example, a resin material. The body housing 4 comprises a right housing 8 defining an outer shape of a right half surface of the body housing 4 and a left housing 10 defining an outer shape of a left half surface of the body housing 4.

The body housing 4 comprises a twisting unit accommodating portion 14, a grip portion 16, a battery receptacle portion 18, a feed unit accommodating portion 20, and a reel support portion 22. The twisting unit accommodating portion 14, the grip portion 16, and the battery receptacle portion 18 are formed by the right housing 8 and the left housing 10. The feed unit accommodating portion 20 and the reel support portion 22 are formed by the right housing 8, the left housing 10, and the reel cover 6.

As illustrated in FIG. 2, the twisting unit accommodating portion 14 extends in the front-rear direction. The grip portion 16 is disposed below a rear part of the twisting unit accommodating portion 14. The grip portion 16 is configured to be grasped by a user. A trigger 23 is attached to an upper part of a front surface of the grip portion 16 such that the trigger 23 can be pulled in. When the trigger 23 is operated by the user, the rebar tying tool 2 ties the plural rebars R with the wire W.

The battery receptacle portion 18 is disposed below the grip portion 16. The battery pack BP is detachably attached to a lower end of the battery receptacle portion 18. The battery pack BP comprises for example secondary batteri(es) such as lithium-ion batteri(es). The battery receptacle portion 18 accommodates a control circuit board 24 therein. The control circuit board 24 executes a tying process of tying the plural rebars R with the wire W.

The feed unit accommodating portion 20 is disposed below a front part of the twisting unit accommodating portion 14. The feed unit accommodating portion 20 is disposed in front of the grip portion 16.

The reel support portion 22 is disposed below the feed unit accommodating portion 20. Here, in FIG. 2, the reel support portion 22 is illustrated in broken lines. The reel support portion 22 is disposed frontward of the grip portion 16, the battery receptacle portion 18, and the battery pack BP. The reel support portion 22 is connected to a front end of the battery receptacle portion 18. As illustrated in FIG. 3, the reel support portion 22 is configured to accommodate a reel RL. The reel RL comprises the wire W and a bobbin 26. The bobbin 26 comprises a bobbin body 27 on which the wire W is wound, and a pair of flanges 28 at both ends of the bobbin body 27.

The reel support portion 22 comprises a base member 30 and a reel support member 32. The base member 30 is composed of the left housing 10. The base member 30 has a reel accommodating space 36 therein. A left end of the base member 30 is open.

The reel support member 32 is disposed in the reel accommodating space 36. The reel support member 32 extends leftward from the base member 30. The reel support member 32 is inserted in the bobbin body 27. By the reel support member 32 being inserted in the bobbin body 27, the reel RL is accommodated in the reel accommodating space 36. The reel support member 32 supports the reel RL about a reel rotation axis AX1 so that the reel RL can rotate. The reel rotation axis AX1 extends in the left-right direction.

As illustrated in FIG. 1, the reel cover 6 is supported by the left housing 10 so that the reel cover 6 is pivotable. In the present embodiment, the reel cover 6 is supported by the left housing 10 of the feed unit accommodating portion 20. The reel cover 6 is configured to pivot about a cover pivot axis AX2. By the reel cover 6 pivoting, the reel cover 6 is configured to switch between a prohibiting state and a permitting state (see FIG. 4). The cover pivot axis AX2 is disposed above the battery receptacle portion 18 and the reel rotation axis AX1 (see FIG. 2).

As illustrated in FIG. 3, the reel cover 6 is positioned in a first position when the reel cover 6 is in the prohibiting state. At this occasion, the reel accommodating space 36 is closed by the reel cover 6. Due to this, the reel RL can be prohibited from being detached from the reel support member 32, that is, the reel RL can be prohibited from slipping out of the reel accommodating space 36. As illustrated in FIG. 4, the reel cover 6 is positioned in a second position when the reel cover 6 is in the permitting state. At this occasion, the reel accommodating space 36 is opened. Due to this, the reel RL can be permitted to be detached from the reel support member 32 (see FIG. 3), that is, the reel RL can be permitted to slip out of the reel accommodating space 36. The reel cover 6 pivots in an opening direction D1 (see FIG. 3) from the prohibiting state with the lock lever 40 pressed inward, by which the reel cover 6 pivots to the second position. Further, the reel cover 6 pivots in a closing direction D2 (see FIG. 3) from the permitting state, by which the reel cover 6 pivots to the first position. The closing direction D2 is opposite from the opening direction D1.

As illustrated in FIG. 2, the rebar tying tool 2 further comprises a feed unit 50, a wire guide member 52, a guide unit 54, a cutting unit 56, the twisting unit 58, and a rotation regulation unit 60.

The feed unit 50 is accommodated in the feed unit accommodating portion 20. The feed unit 50 is supported by the body housing 4. As illustrated in FIG. 5, the feed unit 50 comprises a feed motor 66 (see FIG. 2), a transmission roller 68, a first roller 70, and a second roller 72.

As illustrated in FIG. 2, the feed motor 66 rotates by power supplied from the battery pack BP. The feed motor 66 is for example a brushless motor. When the feed motor 66 rotates, the transmission roller 68 (see FIG. 5) rotates. The transmission roller 68 is for example a spur gear.

As illustrated in FIG. 5, the first roller 70 is for example a spur gear. The first roller 70 meshes with the transmission roller 68. Due to this, when the transmission roller 68 rotates, the first roller 70 rotates about a first rotation axis AX3.

The second roller 72 is for example a spur gear. The second roller 72 is configured to mesh with the first roller 70. When the first roller 70 rotates with the second roller 72 meshed with the first roller 70, the second roller 72 rotates about a second rotation axis AX4. The second rotation axis AX4 is substantially parallel to the first rotation axis AX3. When the wire Wis located between the first roller 70 and the second roller 72 with the second roller 72 meshed with the first roller 70, the wire W is held between the first roller 70 and the second roller 72. When the first roller 70 rotates in a forward direction in this state, the wire W is drawn out from the bobbin 26 (see FIG. 3), and is fed out toward the guide unit 54 (see FIG. 2). Also, when the first roller 70 rotates in a reverse direction in this state, the wire W is pulled back toward the bobbin 26.

As illustrated in FIG. 2, the wire guide member 52 is accommodated in the feed unit accommodating portion 20. The wire guide member 52 is supported by the body housing 4. The wire guide member 52 is disposed between the first roller 70 and the reel support member 32. As illustrated in FIG. 5, the wire guide member 52 has a wire guide hole 76 which penetrates the wire guide member 52 in a longitudinal direction of the wire guide member 52. The wire guide hole 76 has a substantially frustum shape of a circular cone. The wire guide hole 76 extends front and upward. The wire guide hole 76 has an inlet 78 located at one end of the wire guide hole 76 and an outlet 80 located at another end of the wire guide hole 76. An opening area of the inlet 78 is larger than an opening area of the outlet 80. After the wire W is drawn out from the bobbin 26, the wire W enters through the inlet 78 into the wire guide hole 76, passes through the wire guide hole 76, after which the wire W is fed through the outlet 80 toward the first roller 70 and the second roller 72. The wire W is guided by the wire guide member 52 toward the feed unit 50.

As illustrated in FIG. 6, in the left-right direction in which the reel rotation axis AX1 extends, when the rebar tying tool 2 is seen from the front side, a center position of the wire guide hole 76 in the left-right direction is substantially the same as each of a position of a center 78a of the inlet 78 and a position of a center 80a of the outlet 80. In the left-right direction, the center in the left-right direction of the wire guide hole 76 is disposed between the pair of flanges 28. Here, being between the pair of flanges 28 means being between two side surfaces facing each other of the pair of flanges 28 (i.e., between a left side surface of the right flange 28 and a right side surface of the left flange 28). Due to this, in the left-right direction, as compared to a configuration that the center in the left-right direction of the wire guide hole 76 is not disposed between the pair of flanges 28, the wire W can be suppressed from being deformed. In the left-right direction, the center in the left-right direction of the wire guide hole 76 is offset leftward from a center of the bobbin 26 in the left-right direction. In the left-right direction, the position of the center in the left-right direction of the wire guide hole 76 is substantially the same as the position of a center between the first rotation axis AX3 of the first roller 70 and the second rotation axis AX4 of the second roller 72 in the left-right direction.

As illustrated in FIG. 2, the guide unit 54 is supported by the body housing 4. The guide unit 54 comprises a first guide member 84 and a second guide member 86. The first guide member 84 and the second guide member 86 extend frontward from a front end of the twisting unit accommodating portion 14. The first guide member 84 has a first wire path 88 in an upward curving shape. The second guide member 86 is disposed apart from and below the first guide member 84. The rebars R are disposed between the first guide member 84 and the second guide member 86 when they are tied. The second guide member 86 has a second wire path 90.

The wire W fed out by the feed unit 50 is firstly guided by the first guide member 84, and passes through the first wire path 88 from rear to front. While the wire W is passing through the first wire path 88, the wire W is given a downward curl. Next, the wire W is guided by the second guide member 86, and passes through the second wire path 90 from front to rear. Next, the wire W moves rear and upward. Due to this, the wire W is wrapped about the rebars R.

As illustrated in FIG. 6, in the left-right direction, the position of a center of the first wire path 88 in the left-right direction is substantially the same as the position of the center in the left-right direction of the wire guide hole 76. In the left-right direction, the center of the first wire path 88 in the left-right direction is disposed between the pair of flanges 28. In the left-right direction, a center of the second wire path 90 in the left-right direction is disposed leftward from the center of the first wire path 88 in the left-right direction. In the left-right direction, the center of the first wire path 88 in the left-right direction is disposed between a right end and a left end of the second wire path 90. In the left-right direction, the center of the first wire path 88 in the left-right direction and the center of the second wire path 90 in the left-right direction are offset leftward from the center of the bobbin 26 in the left-right direction.

As illustrated in FIG. 2, the cutting unit 56 is accommodated in the twisting unit accommodating portion 14. The cutting unit 56 cuts the wire W around the rebars R.

The twisting unit 58 is accommodated in the twisting unit accommodating portion 14. The twisting unit 58 comprises a twist motor 94, a sleeve unit 96, and a grip unit 98.

The twist motor 94 rotates on power supplied from the battery pack BP. The twist motor 94 is for example a brushless motor.

When the twist motor 94 rotates, the sleeve unit 96 moves in the front-rear direction, or rotates about a sleeve rotation axis AX5 extending in the front-rear direction. As illustrated in FIG. 7, the sleeve unit 96 comprises a plurality of fins 100 aligned about the sleeve rotation axis AX5 at equal intervals. The plurality of fins 100 comprises seven short fins 100a and one long fin 100b.

As illustrated in FIG. 2, the grip unit 98 grips both ends of the wire W wrapped around the rebars R when the sleeve unit 96 moves to the front. Also, the grip unit 98 rotates when the sleeve unit 96 rotates. Due to this, the grip unit 98 twists the wire W. As a result of this, the rebars R are tied with the wire W.

As illustrated in FIG. 7, the rotation regulation unit 60 is disposed in proximity to the sleeve unit 96. The rotation regulation unit 60 permits and prohibits rotation of the sleeve unit 96. The rotation regulation unit 60 comprises a contact plate 102. By the long fin 100b contacting an upper end of the contact plate 102 from above, the rotation of the sleeve unit 96 is prohibited. In the up-down direction, a position of the upper end of the contact plate 102 in the up-down direction is disposed below the position of the sleeve rotation axis AX5 in the up-down direction by half a thickness of the long fin 100b. Due to this, even when the long fin 100b contacts the upper end of the contact plate 102 from above and thereby the rotation regulation unit 60 is pushed downward, the long fin 100b can be suppressed from overly descending to a spot lower than the position of the sleeve rotation axis AX5 in the up-down direction. Also, when the long fin 100b contacts the contact plate 102 from a right surface of the contact plate 102, the contact plate 102 is pressed leftward by the long fin 100b, and when the long fin 100b is detached from the right surface of the contact plate 102, the contact plate 102 returns to an initial position by biasing force of an unillustrated biasing member.

As illustrated in FIG. 4, the rebar tying tool 2 further comprise a pair of lateral plates 106. The pair of lateral plates 106 is supported by the front end of the twisting unit accommodating portion 14 so that the plates 106 can pivot. The pair of lateral plates 106 is pressed against the rebars R when tying the rebars R with the wire W. The pair of lateral plates 106 open by the ends of the wire W contacting the plates 106 when the rebars R are tied.

As illustrated in FIG. 8, the rebar tying tool 2 further comprises a slide unit 108 and a detection sensor 110. The slide unit 108 biases the lateral plates 106 in a direction of opening the lateral plates 106. The slide unit 108 comprises a slide plate 112, a plate guide member 114 (see FIG. 9), a magnet support member 116, a magnet 118, and a biasing member 120.

As illustrated in FIG. 9, the slide plate 112 extends frontward from a rear end of the slide plate 112 and then bends, extends in a direction inclined leftward relative to the front direction, and then further bends to extend frontward. The slide plate 112 is supported by a rail 122 of the twisting unit accommodating portion 14 so that the slide plate 112 can slide in the front-rear direction. The slide plate 112 contacts the lateral plates 106 from behind by the biasing force of the biasing member 120. The lateral plates 106 are biased in a direction of closing the lateral plates 106 by an unillustrated biasing member with force greater than the biasing force of the biasing member 120. Due to this, the lateral plates 106 are normally-closed.

The plate guide member 114 is disposed frontward of the rail 122. The plate guide member 114 is disposed near a front end of the slide plate 112. When the lateral plates 106 switch from the open state to the closed state, force of a direction D3 inclined relative to the rearward direction acts on the slide plate 112, by which the slide plate 112 contacts the plate guide member 114. By the plate guide member 114 guiding the slide plate 112 rearward, the slide plate 112 is suppressed from being pressed against the rail 122. Due to this, friction force acting between the slide plate 112 and the rail 122 can be reduced. As a result of this, the slide plate 112 can be suppressed from having difficulty in sliding rearward.

As illustrated in FIG. 8, the magnet support member 116 is fixed to a rear end of the slide plate 112, and the magnet support member 116 supports the magnet 118.

The detection sensor 110 comprises a sensor element 110a configured to detect magnetism. When the lateral plates 106 are closed, the sensor element 110a faces the magnet 118. When the lateral plates 106 are open, the sensor element 110a does not face the magnet 118. In FIG. 8, the magnet support member 116 and the magnet 118 when the lateral plates 106 are open are indicated in broken lines. By the sensor element 110a detecting a change in the magnetism of the magnet 118, the detection sensor 110 detects whether the lateral plates 106 are open or closed.

As illustrated in FIG. 2, the rebar tying tool 2 further comprises a contact object 130. The contact object 130 is disposed between the reel support member 32 and the wire guide member 52. Also, when the reel RL is attached to the reel support member 32, the contact object 130 is disposed between the reel RL and the wire guide member 52. The contact object 130 is configured to contact the wire W with the contact object 130 between the reel support member 32 and the wire guide member 52 (i.e., between the bobbin 26 and the wire guide member 52). In the present embodiment, the contact object 130 is configured to contact the wire W in a state where the wire W is taut and a state where the wire W is loosened. As illustrated in FIG. 5, the contact object 130 is a roller configured to rotate. The contact object 130 is configured to rotate relative to the reel cover 6. When the reel cover 6 is in the prohibiting state, the contact object 130 is disposed in a guiding space 132 defined between the left housing 10 of the feed unit accommodating portion 20 and the reel cover 6. The guiding space 132 is a part of the feed unit accommodating portion 20. Due to this, the contact object 130 is not disposed in the reel support portion 22 but in the feed unit accommodating portion 20. The guiding space 132 is disposed between the reel accommodating space 36 and the inlet 78 of the wire guide member 52. Due to this, the guiding space 132 differs from the reel accommodating space 36. The guiding space 132 is in communication with both the reel accommodating space 36 and the wire guide hole 76.

The reel cover 6 comprises ribs 136 protruding from an inner surface of the reel cover 6, and the contact object 130 is supported by the ribs 136. As illustrated in FIG. 10, the contact object 130 comprises a body portion 138 and a shaft portion 140.

The body portion 138 is constituted of, for example, a metal. The body portion 138 has a substantially cylindrical shape. A diameter of the body portion 138 is constant along a longitudinal direction of the body portion 138. A distance between the body portion 138 and the inlet 78 of the wire guide member 52 is constant along the longitudinal direction of the body portion 138. A length of the body portion 138 in the longitudinal direction is longer than a diameter of the inlet 78. When the reel cover 6 is in the prohibiting state, the body portion 138 does not contact a wall surface of the reel support portion 22 (i.e., wall surface of the left housing 10). For example, in the front-rear direction, the body portion 138 is apart from each of a front wall surface and a rear wall surface of the reel support portion 22.

The shaft portion 140 is constituted of, for example, a metal. In a modification, the shaft portion 140 may be constituted of, a resin material. The shaft portion 140 has a substantially circular columnar shape. The shaft portion 140 penetrates the body portion 138 in the longitudinal direction of the body portion 138. The body portion 138 is configured to rotate about the shaft portion 140. A rotation axis AX6 of the body portion 138 extends in the longitudinal direction of the body portion 138. The rotation axis AX6 extends along a plane substantially perpendicular to the reel rotation axis AX1 (see FIG. 2). Also, as illustrated in FIG. 5, the rotation axis AX6 is substantially parallel to each of the cover pivot axis AX2, the first rotation axis AX3, and the second rotation axis AX4. As illustrated in FIG. 10, both ends of the shaft portion 140 are supported by the reel cover 6. The shaft portion 140 is attached to the ribs 136 by a ring member 142. The ring member 142 is an elastic member, and for example, is an O ring. The shaft portion 140 is configured to be removed from and attached to the reel cover 6.

The feed unit accommodating portion 20 comprises a retaining surface 144 defining a part of the guiding space 132. The retaining surface 144 is arranged on the left housing 10. When the reel cover 6 is in the prohibiting state, the retaining surface 144 faces the shaft portion 140 and is disposed apart from the shaft portion 140. A distance between the shaft portion 140 and the retaining surface 144 is shorter than each of a length of the shaft portion 140 and the length of the body portion 138. Due to this, even when the shaft portion 140 slides relative to the body portion 138 in a direction D4, the shaft portion 140 contacts the retaining surface 144 with the shaft portion 140 penetrating the body portion 138. Thus, when the reel cover 6 is in the prohibiting state, the shaft portion 140 can be suppressed from slipping out of the body portion 138 in the direction D4. Due to this, when the reel cover 6 is in the prohibiting state, the contact object 130 can be suppressed from being detached from the reel cover 6. Also, although not illustrated, when the reel cover 6 is in the permitting state, the shaft portion 140 does not face the retaining surface 144. Due to this, by moving the shaft portion 140 in the direction D4 with a tool such as a pin, the contact object 130 can be removed from the reel cover 6.

As illustrated in FIGS. 5 and 11, the contact object 130 moves unitedly with the reel cover 6. As illustrated in FIG. 5, when the reel cover 6 is in the prohibiting state, the contact object 130 is disposed in proximity to the inlet 78 of the wire guide member 52. The contact object 130 is disposed between the reel RL and the inlet 78. At least a part of the contact object 130 is disposed in an entering wire path 134 defined between a rim of the inlet 78 and the pair of flanges 28 of the reel RL. In FIG. 5, an end of the entering wire path 134 is shown in broken lines. The wire W passes through the entering wire path 134. In a view of the rebar tying tool 2 along a line L1 connecting the center 78a of the inlet 78 and the center 80a of the outlet 80, the contact object 130 blocks a part of the inlet 78. In the present embodiment, in the view of the rebar tying tool 2 along the line L1, the contact object 130 blocks 50% or more of an entire area of the inlet 78. An area of a non-blocked portion of the inlet 78 that is not blocked by the contact object 130 is larger than each of an area of the outlet 80 and a cross-sectional area of the wire W. In the left-right direction, a right end of the contact object 130 can contact the wire W in the entering wire path 134 from the left side. The right end of the contact object 130 corresponds to a contact portion configured to contact the wire W in the entering wire path 134. The right end of the contact object 130 can also contact the wire W in the entering wire path 134 in the closing direction D2 (see FIG. 3). Thus, a region (or portion) in which the wire W passes through the entering wire path 134 can be regulated by the contact object 130. Due to this, the contact object 130 can allow to regulate the region in which the wire W passes through the wire guide hole 76. As a result of this, variation in curls given to the wire W can be suppressed. Here, in FIG. 5, the wire W extending from the bobbin 26 to the first roller 70 and the second roller 72 can be illustrated in a black line. The contact object 130 rotates due to contacting the wire W when the wire W is drawn out from the bobbin 26 or when the wire W is pulled back into the bobbin 26. Thus, an outer surface of the contact object 130 (i.e., outer surface of the body portion 138) can be suppressed from wearing out due to being abraded with the wire W. As illustrated in FIG. 12, when the wire W is drawn out from the bobbin 26 or the wire W is pulled back into the bobbin 26, the wire W about the bobbin 26 spreads outward in a radial direction of the bobbin 26. Thus, generation of curls on the wire W in the direction along which the reel rotation axis AX1 extends can be suppressed. Further, generation of curls on the wire W can be suppressed because the wire W contacts the contact object 130 in proximity to the left flange 28.

As illustrated in FIG. 5, the feed unit accommodating portion 20 further comprises a guide surface 150 defining a part of the guiding space 132. Also, the guide surface 150 defines a part of the entering wire path 134. The guide surface 150 guides the wire W drawn out from the bobbin 26 toward the inlet 78 of the wire guide member 52. The guide surface 150 is formed on the left housing 10. The guide surface 150 is disposed along the rim of the inlet 78. The guide surface 150 has a curved shape. When the reel cover 6 is in the prohibiting state, the guide surface 150 faces both the body portion 138 of the contact object 130 and the ribs 136 of the reel cover 6. The guide surface 150 is apart from the body portion 138. When the reel cover 6 is in the prohibiting state, a maximum distance between the guide surface 150 and the body portion 138 is smaller than the diameter of the inlet 78.

As illustrated in FIG. 6, when the reel cover 6 (see FIG. 5) is in the prohibiting state, in the left-right direction, a center in the left-right direction of the contact object 130 (i.e., the rotation axis AX6) and the right end of the contact object 130 are offset leftward from the center in the left-right direction of the bobbin 26. In the left-right direction, the center in the left-right direction of the contact object 130 and the right end of the contact object 130 are disposed between the pair of flanges 28. In the left-right direction, the center in the left-right direction of the contact object 130 is disposed between the center in the left-right direction of the wire guide hole 76 and the left flange 28. In the left-right direction, a position in the left-right direction of the right end of the contact object 130 is substantially the same as the position of the center in the left-right direction of the wire guide hole 76. In the present embodiment, in the left-right direction, the center in the left-right direction of the contact object 130, the right end of the contact object 130, the center in the left-right direction of the wire guide hole 76, a center in the left-right direction between the first rotation axis AX3 and the second rotation axis AX4, the center in the left-right direction of the first wire path 88, and the center in the left-right direction of the second wire path 90 are all offset leftward, i.e., to the same side from the center in the left-right direction of the bobbin 26.

In the present embodiment, when the wire W is drawn out from the bobbin 26 or when the wire W is pulled back into the bobbin 26, the right end of the contact object 130 can contact the wire W. Also, in the view of the rebar tying tool 2 along the line L1 (see FIG. 5) with the reel cover 6 in the prohibiting state, the contact object 130 blocks a part of the inlet 78. Thus, the region where the wire W passes through the wire guide hole 76 is regulated by the contact object 130. Due to this, variation in curls given to the W can be suppressed. As a result of this, variation in the trajectories of the wire W sent by the first roller 70 and the second roller 72 can be suppressed. It can be suppressed that the wire W does not pass in the second wire path 90 after having passed in the first wire path 88 (see FIG. 2), for example, it can be suppressed that the wire W passes on the right side of the second wire path 90.

As illustrated in FIG. 11, when the reel cover 6 is in the permitting state, the contact object 130 is disposed to the left of the inlet 78 of the wire guide member 52. The contact object 130 is disposed outside the entering wire path 134. In the view of the rebar tying tool 2 along the line L1, the contact object 130 does not block the inlet 78. As such, In the view of the rebar tying tool 2 along the line L1, an area of the region of the inlet 78 in which the wire W can pass when the reel cover 6 is in the permitting state is larger than an area of a region of the inlet 78 in which the wire W can pass when the reel cover 6 is in the prohibiting state. Due to this, when the user replaces the reel RL, he/she can easily insert a tip of the wire W into the inlet 78. Here, in the view of the rebar tying tool 2 along the line L1 with the reel cover 6 in the permitting state, the contact object 130 may block a part of the inlet 78. In this configuration, in the view of the rebar tying tool 2 along the line L1, the area of a blocked portion of the inlet 78 that is blocked by the contact object 130 when the reel cover 6 is in the permitting state is smaller than an area of a blocked portion of the inlet 78 that is blocked by the contact object 130 when the reel cover 6 is in the prohibiting state. In this configuration also, when the user replaces the reel RL, he/she can easily insert the tip of the wire W into the inlet 78.

Effects

The rebar tying tool 2 according to the present embodiment comprises: the feed unit 50 configured to feed the wire W; the guide unit 54 configured to guide the wire W such that the wire W is wound around the rebars R; the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1; the wire guide member 52 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50; and the contact object 130 configured to contact the wire W in a direction in which the reel rotation axis AX1 extends, with the contact object 130 located between the wire guide member 52 and the reel support member 32.

According to the above configuration, the contact object 130 contacts the wire W in the direction along which the reel rotation axis AX1 extends, with the contact object 130 located between the wire guide member 52 and the reel support member 32. Due to this, the path along which the wire W is guided by the wire guide member 52 is regulated by the contact object 130 to the direction along which the reel rotation axis AX1 extends. As a result of this, the variation in curls which the wire W is given can be suppressed. Due to this, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, by which the wire W can be suppressed from being detached from the guide unit 54.

The rebar tying tool 2 further comprises the reel cover 6 (example for a reel stopper) configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32. The contact object 130 is disposed on the reel cover 6 and configured to contact the wire W when the reel cover 6 is in the prohibiting state.

According to the above configuration, by switching the reel cover 6 from the permitting state to the prohibiting state, the contact object 130 can be set in a state capable of contacting the wire W.

When the reel cover 6 is switched from the permitting state to the prohibiting state, the reel cover 6 moves in the closing direction D2 (example for a first direction). When the reel cover 6 is in the prohibiting state, the contact object 130 is configured to contact the wire W in the closing direction D2 with the contact object 130 located between the wire guide member 52 and the reel support member 32.

According to the above configuration, the path along which the wire W is guided by the wire guide member 52 is regulated to the closing direction D2 by the contact object 130. Due to this, variation in curls given to the wire W can be suppressed. This can in turn make it possible to suppress the variation in the trajectories of the wire W fed from the feed unit 50 and suppress the wire W from being detached from the guide unit 54.

The wire guide member 52 comprises the wire guide hole 76 through which the wire W is configured to pass. In a view of the rebar tying tool 2 along the line L1 connecting the center 78a of the inlet 78 of the wire guide hole 76 and the center 80a of the outlet 80 of the wire guide hole 76, when the reel cover 6 is in the prohibiting state, the contact object 130 blocks a part of the inlet 78 of the wire guide hole 76, and when the reel cover 6 is in the permitting state, the contact object 130 does not block the inlet 78 of the wire guide hole 76, or blocks a part of the inlet 78 such that an area of a blocked portion of the inlet 78 that is blocked by the contact object 130 is smaller than the area of the blocked portion of the inlet 78 that is blocked by the contact object 130 when the reel cover 6 is in the prohibiting state.

According to the above configuration, the contact object 130 blocks a part of the inlet 78 of the wire guide hole 76 when the reel cover 6 is in the prohibiting state. As a result, the path along which the wire W passes through the wire guide hole 76 is regulated by the contact object 130. As a result, variation in the curls given to the wire W can be suppressed. This can in turn suppress variation in the trajectories of the wire W fed from the feed unit 50, and suppress the wire W from being detached from the guide unit 54. It also enables the user to easily insert the wire W into the inlet 78 of the wire guide hole 76 when the reel cover 6 is in the permitting state.

The rebar tying tool 2 further comprises the guide surface 150 disposed along the rim of the inlet 78 of the wire guide hole 76 and configured to guide the wire W into the inlet 78 of the wire guide hole 76. The guide surface 150 faces the contact object 130 when the reel cover 6 is in the prohibiting state.

According to the above configuration, the guide surface 150 can be utilized to easily guide the wire W to the inlet 78 of the wire guide hole 76.

The rebar tying tool 2 further comprises the left housing 10 (example for a first guide wall) separate from the wire guide member 52, wherein the left housing 10 comprises the guide surface 150.

According to the above configuration, degree of freedom in design of the guide surface 150 can be improved.

When the reel cover 6 is in the prohibiting state, in the view of the rebar tying tool 2 along the line L1 connecting the center 78a of the inlet 78 of the wire guide hole 76 and the center 80a of the outlet 80 of the wire guide hole 76, the contact object 130 blocks 50% or more an entire area of the inlet 78 of the wire guide hole 76.

According to the above configuration, the contact object 130 can easily contact the wire W. Also, the path along which the wire W is guided by the wire guide member 52 can be further regulated by using the contact object 130. Due to this, variation in the curls given to the wire W can be suppressed. Due to this, variation in the trajectories of the wire W fed from the feed unit 50 can be suppressed, and the wire W can be further suppressed from being detached from the guide unit 54.

The contact object 130 is configured to rotate with respect to the reel cover 6.

According to the above configuration, the outer surface of the contact object 130 can be suppressed from wearing out due to being abraded by the wire W.

The rebar tying tool 2 further comprises the left housing 10 (example for a housing) supporting the reel cover 6 such that the reel cover 6 is configured to be switched between the prohibiting state and the permitting state. The contact object 130 comprises the body portion 138 configured to rotate and the shaft portion 140 extending through the body portion 138 and supported by the reel cover 6. When the reel cover 6 is in the prohibiting state, under a state where the shaft portion 140 extends through the body portion 138, the shaft portion 140 is configured to contact the left housing 10 in the direction D4 in which the shaft portion 140 comes out of the body portion 138.

According to the above configuration, when the reel cover 6 is in the prohibiting state, the shaft portion 140 can be suppressed from coming out of the body portion 138. Due to this, the contact object 130 can be suppressed from being detached from the reel cover 6 when the reel cover 6 is in the prohibiting state.

The contact object 130 is constituted of a metal.

According to the above configuration, the contact object 130 can be suppressed from wearing out due to it contacting the wire W.

The rebar tying tool 2 according to the present embodiment comprises the feed unit 50 configured to feed the wire W, the guide unit 54 configured to guide the wire W such that the wire Wis wound around the rebars R, the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1, the wire guide member 52 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50, the contact object 130 configured to contact the wire W, with the contact object 130 located between the wire guide member 52 and the reel support member 32, and the reel cover 6 (example for a reel stopper) configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32. When the reel cover 6 is switched from the permitting state to the prohibiting state, the reel cover 6 moves in the closing direction D2 (example for a first direction), the contact object 130 is disposed on the reel cover 6, and when the reel cover 6 is in the prohibiting state, the contact object 130 is configured to contact the wire W in the closing direction D2 with the contact object 130 located between the wire guide member 52 and the reel support member 32.

According to the above configuration, the contact object 130 contacts the wire W in the closing direction D2 with the contact object 130 located between the wire guide member 52 and the reel support member 32. Due to this, the path along which the wire W is guided by the wire guide member 52 is regulated to the closing direction D2 by the contact object 130. As a result of this, variation in curls given to the W can be suppressed. Thus, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, and thus the wire W can be suppressed from being detached from the guide unit 54.

The rebar tying tool 2 disclosed herein comprises the feed unit 50 configured to feed the wire W, the guide unit 54 configured to guide the wire W such that the wire W is wound around the rebars R, the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1, the wire guide member 52 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50, the contact object 130 configured to contact the wire W with the contact object 130 located between the wire guide member 52 and the reel support member 32, and the reel cover 6 (example for a reel stopper) configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32. The wire guide member 52 comprises the wire guide hole 76 through which the wire W is configured to pass. In the view of the rebar tying tool 2 along the line L1 connecting the center 78a of the inlet 78 of the wire guide hole 76 and the center 80a of the outlet 80 of the wire guide hole 76, when the reel cover 6 is in the prohibiting state, the contact object 130 blocks a part of the inlet 78 of the wire guide hole 76, and when the reel cover 6 is in the permitting state, the contact object 130 does not block the inlet 78 of the wire guide hole 76, or blocks a part of the inlet 78 such that an area of a blocked portion of the inlet 78 that is blocked by the contact object 130 is smaller than the area of the blocked portion that is blocked by the contact object 130 when the reel cover 6 is in the prohibiting state.

According to the above configuration, the contact object 130 blocks a part of the inlet 78 of the wire guide hole 76 when the reel cover 6 is in the prohibiting state. Due to this, the path along which the wire W passes through the wire guide hole 76 is regulated by the contact object 130. As a result of this, variation in curls given to the wire W can be suppressed. Thus, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, and thus the wire W can be suppressed from being detached from the guide unit 54. Also, when the reel cover 6 is in the permitting state, the contact object 130 does not block the inlet 78 of the wire guide hole 76, or the area of the blocked portion of the inlet 78 that is blocked by the contact object 130 is smaller than the area of the blocked portion of the inlet 78 that is blocked by the contact object 130 when the reel cover 6 is in the prohibiting state. This facilitates insertion of the wire W into the inlet 78 of the wire guide hole 76.

Second Embodiment

In the second embodiment, points different from the first embodiment will be described. As illustrated in FIG. 13, the guide surface 150 is defined on the wire guide member 52. The wire guide member 52 comprises a first portion 200 having the wire guide hole 76 and a second portion 202 having the guide surface 150. A shape of the first portion 200 is substantially identical to a shape of the wire guide member 52 of the first embodiment.

The second portion 202 is formed integrally with the first portion 200. The second portion 202 has a frustum shape of a circular cone severed in halves. The guide surface 150 extends along the rim of the inlet 78 in the first portion 200. The guide surface 150 is disposed on a same plane flush with an inner surface of the first portion 200 defining the wire guide hole 76. Due to this, the guide surface 150 can properly guide the wire W toward the inlet 78.

Effects

In the present embodiment, the guide surface 150 is defined on the wire guide member 52.

According to the above configuration, the number of components of the rebar tying tool 2 can be reduced.

Third Embodiment

In the third embodiment, points different from the first embodiment will be described. As illustrated in FIG. 14, the rebar tying tool 2 comprises a contact object 230 instead of the contact object 130 of the first embodiment. The contact object 230 is formed integrally with the reel cover 6. For example, the reel cover 6 and the contact object 230 are fabricated by injection molding. Due to this, the contact object 230 can be suppressed from being detached from the reel cover 6. The contact object 230 does not rotate relative to the reel cover 6. The contact object 230 has a substantially circular columnar shape. The contact object 230 extends from an inner surface of the reel cover 6. When the reel cover 6 is in the prohibiting state, the position of the contact object 230 is substantially the same as that of the contact object 130 in the first embodiment. Also, when the reel cover 6 is in the permitting state, the position of the contact object 230 is substantially the same as that of the contact object 130 in the first embodiment. An outer surface of the contact object 230 is configured to contact the wire W. When the wire W is drawn out from the bobbin 26 or the wire W is pulled back into the bobbin 26, the wire W slides on the outer surface of the contact object 230.

Effects

In the present embodiment, the contact object 230 is formed integrally with the reel cover 6.

According to the above configuration, the number of components of the rebar tying tool 2 can be reduced.

Fourth Embodiment

In the fourth embodiment, points different from the first embodiment will be described. As illustrated in FIG. 15, the rebar tying tool 2 comprises a contact object 330 instead of the contact object 130 in the first embodiment. The contact object 330 is supported by the left housing 10 of the feed unit accommodating portion 20 such that the contact object 330 can pivot. The contact object 330 is configured to contact the wire W in both a state in which the wire W is taut and a state where the wire W is loosened.

The rebar tying tool 2 further comprises an operation member 332. The operation member 332 is supported by the reel cover 6. In the present embodiment, the operation member 332 is formed integrally with the reel cover 6 by means of injection molding, for example. In a modification, the operation member 332 may be separate from the reel cover 6 and attached to the reel cover 6. The operation member 332 extends from the inner surface of the reel cover 6. When the reel cover 6 is in the permitting state, the operation member 332 is apart from the contact object 330. Due to this, the contact object 330 does not block the inlet 78 of the wire guide member 52. At this occasion, the contact object 330 does not contact the wire W. Hereafter, a state where the contact object 330 does not contact the wire W will be termed “non-contact state”.

As illustrated in FIG. 16, when the reel cover 6 is switched from the permitting state to the prohibiting state, the operation member 332 operates the contact object 330 by contacting the contact object 330. Thus, in the view of the rebar tying tool 2 in a direction along the line L1, the contact object 330 pivots to block a part of the inlet 78. In the view of the rebar tying tool 2 along the line L1, the area which the contact object 330 blocks the inlet 78 is substantially identical to the area which the contact object 130 blocks the inlet 78 in the first embodiment. When the contact object 330 blocks a part of the inlet 78, the contact object 330 is configured to contact the wire W in the entering wire path 134 from the left side. Since a region where the wire W passes through the entering wire path 134 is regulated by the contact object 330, the region where the wire W passes through the wire guide hole 76 can be regulated by the contact object 330. Hereafter, a state where the contact object 330 can contact the wire W will be termed “contact state”. Also, when the contact object 330 is in the contact state, the contact object 330 is located between the reel RL and the inlet 78 and located in the entering wire path 134.

As illustrated in FIG. 15, when the reel cover 6 is switched from the prohibiting state to the permitting state, the operation member 332 separates away from the contact object 330. Thus, the contact object 330 switches from the contact state to the non-contact state by a biasing force by an unillustrated biasing member.

Effects

In the present embodiment, the rebar tying tool 2 further comprises the reel cover 6 configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32, the left housing 10 supporting the reel cover 6 such that the reel cover 6 is configured to be switched between the prohibiting state and the permitting state and supporting the contact object 330 such that the contact object 330 can move, and the operation member 332 supported by the reel cover 6 and configured to operate the contact object 330. When the reel cover 6 is switched from the permitting state to the prohibiting state, the operation member 332 operates the contact object 330 to switch the contact object 330 from the non-contact state in which the contact object 330 is not in contact with the wire W to the contact state in which the contact object 330 is configured to contact the wire W.

According to the above configuration, by operating the reel cover 6, the user can switch the contact object 330 from the non-contact state to the contact state, without directly operating the operation member 332.

Fifth Embodiment

In a fifth embodiment, points different from the first embodiment will be described. As illustrated in FIG. 17, the body portion 138 is a recessed roller. A diameter of the body portion 138 decreases from one end toward a center of the body portion 138, and increases from the center toward another end of the body portion 138. The diameter at both ends of the body portion 138 is larger than the diameter at the center of the body portion 138. In a modification, the body portion 138 may be a V-shaped roller.

The body portion 138 is configured to contact the wire W in the entering wire path 134 from the left side. When the wire W is drawn out from the bobbin 26 or pulled back into the bobbin 26, the wire W contacts the body portion 138 at the center and its surroundings of the body portion 138. Thus, the region where the wire W passes through the entering wire path 134 can be regulated by the contact object 130. As a result of this, the region where the wire W passes through the wire guide hole 76 can be regulated by the contact object 130.

Effects

In the present embodiment, the contact object 130 is a roller with the diameter at both ends of the contact object 130 being larger than the diameter at the center of the contact object 130

According to the above configuration, the wire W passes through the center and its surroundings of the contact object 130. Due to this, the path along which the wire W is guided by the wire guide member 52 can be further regulated by using the contact object 130. As a result of this, variation in curls given to the wire W can be further suppressed. Thus, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, and the wire W can be further suppressed from being detached from the guide unit 54.

Sixth Embodiment

In the sixth embodiment, points different from the first embodiment will be described. As illustrated in FIG. 18, the left housing 10 of the feed unit accommodating portion 20 further comprises a pair of support walls 400. One support wall 400 extends from one end of the guide surface 150, whereas another support wall 400 extends from another end of the guide surface 150. The pair of support walls 400 faces each other.

The contact object 130 is disposed between the pair of support walls 400. One end of the contact object 130 (i.e., one end of the shaft portion 140) is supported by the one support wall 400, whereas another end of the contact object 130 (i.e., another end of the shaft portion 140) is supported by the other support wall 400. The body portion 138 of the contact object 130 is configured to rotate about the shaft portion 140. The position of the contact object 130 is substantially identical to that of the contact object 130 when the reel cover 6 is in the prohibiting state in the first embodiment. Due to this, in the view of the rebar tying tool 2 in the direction along the line L1 (see FIG. 5), the contact object 130 blocks a part of the inlet 78 of the wire guide member 52. Further, since the contact object 130 is supported by the pair of support walls 400, i.e., by the left housing 10, the position of the contact object 130 does not change according to whether the reel cover 6 is in the prohibiting state or in the permitting state. Due to this, the contact object 130 blocks a part of the inlet 78 at all times.

Seventh Embodiment

In the seventh embodiment, points different from the first embodiment will be described. As illustrated in FIG. 19, the diameter of the body portion 138 of the contact object 130 is larger than the diameter of the body portion 138 in the first embodiment. The diameter of the body portion 138 is larger than the diameter of the inlet 78. In the view of the rebar tying tool 2 in the direction along the line L1 with the reel cover 6 in the prohibiting state, the contact object 130 blocks the inlet 78 such that the area of a non-blocked portion of the inlet 78 that is not blocked by the contact object 130 is equal to or less than an opening area of the outlet 80. Thus, the path along which the wire W passes through the entering wire path 134 can be regulated by using the contact object 130. As a result of this, the region where the wire W passes through the wire guide hole 76 can be further regulated by using the contact object 130. In the view of the rebar tying tool 2 in the direction along the line L1 with the reel cover 6 in the prohibiting state, the area of the non-blocked portion of the inlet 78 that is not blocked by the contact object 130 is larger than the cross-sectional area of the wire W.

Effects

In the present embodiment, the wire guide hole 76 has a frustum shape in which the entire area of the inlet 78 is larger than the entire area of the outlet 80. When the reel cover 6 is in the prohibiting state, the contact object 130 blocks the inlet 78 such that the area of the non-blocked portion of the inlet 78 that is not blocked by the contact object 130 is equal to or less than the entire area of the outlet 80.

According to the above configuration, the contact object 130 can easily contact the wire W. Further, the path along which the wire W is guided by the wire guide member 52 can be further regulated by using the contact object 130. Due to this, variation in curls given to the wire W can be further suppressed. Thus, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, and thus the wire W can be further suppressed from being detached from the guide unit 54.

Eighth Embodiment

An eighth embodiment will be described by focusing on points different from the first embodiment. As illustrated in FIGS. 20 and 21, the rebar tying tool 2 comprises a guide surface 450 instead of the guide surface 150 (see FIG. 5) in the first embodiment. The guide surface 450 is defined on the left housing 10. The guide surface 450 has a shape extending along a side surface of a virtual cone (in the present embodiment, a circular cone) defined by the inner surface of the wire guide member 52. Due to this, there is no step between the guide surface 450 and the inner surface of the wire guide member 52. If there is a step between the guide surface 450 and the inner surface of the wire guide member 52, such step may give an unintended curl on the wire W drawn out from the bobbin 26. In the present embodiment, since there is no step between the guide surface 450 and the inner surface of the wire guide member 52, the wire W drawn out from the bobbin 26 can be suppressed from being given an unintended curl.

In the present embodiment, the wire guide member 52 and a wall portion 402 of the left housing 10 defining the guide surface 450 will be collectively termed “wire guide wall 404”. The wire guide wall 404 guides the wire W drawn out from the bobbin 26 toward the feed unit 50. A start point of the wire guide wall 404 is a lower end of the wall portion 402, and a termination point of the wire guide wall 404 is an upper end of the wire guide member 52 (i.e., the outlet 80). As illustrated in FIG. 20, the wire guide wall 404 is outside the reel accommodating space 36. In other words, the wire guide wall 404 does not serve as a wall surrounding the reel RL. In FIG. 20, for clear illustration, a boundary 36a of the reel accommodating space 36 is shown in a broken line.

As illustrated in FIG. 22, the rebar tying tool 2 comprises a contact object 430 instead of the contact object 130 in the first embodiment (see FIGS. 4, 5). The contact object 430 is a plate member constituted of a metal. The contact object 430 comprises a flat portion 432 including a screw hole 431 and a curved portion 434 curved in a semi cylindrical shape. The contact object 430 is fixed to the reel cover 6 with a screw 438.

As illustrated in FIG. 20, when the reel cover 6 is in the prohibiting state, the contact object 430 is disposed such that a convex surface 436 of the curved portion 434 faces the guide surface 450 of the wire guide wall 404. As with the wire guide wall 404, the contact object 430 is disposed outside the reel accommodating space 36. In the view of the rebar tying tool 2 in the direction along the line L1 connecting the center 78a of the inlet 78 and the center 80a of the outlet 80, the contact object 430 blocks a part of the inlet 78. In the present embodiment, in the view of the rebar tying tool 2 in the direction along the line L1, the contact object 430 blocks 50% or more the entire area of the inlet 78. The area of the non-blocked portion of the inlet 78 that is not blocked by the contact object 430 is larger than both the area of the outlet 80 and the cross-sectional area of the wire W. The convex surface 436 of the contact object 430 is configured to contact the wire W in the entering wire path 134 from the left side. The convex surface 436 of the contact object 430 is configured to contact the wire W in the entering wire path 134 in the closing direction D2 (see FIG. 3). When the wire Wis drawn out from the bobbin 26 or the wire W is pulled back into the bobbin 26, the wire W slides on the convex surface 436 of the contact object 430.

Effects

The rebar tying tool 2 according to the present embodiment comprises the feed unit 50 configured to feed the wire W, the guide unit 54 configured to guide the wire W such that the wire W is wound around the rebars R, the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1, the wire guide member 52 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50, and the contact object 430 configured to contact the wire W in the direction in which the reel rotation axis AX1 extends, with the contact object 430 located between the wire guide member 52 and the reel support member 32.

According to the above configuration, the contact object 430 contacts the wire W in the direction along which the reel rotation axis AX1 extends, with the contact object 430 located between the wire guide member 52 and the reel support member 32. Due to this, the path along which the wire W is guided by the wire guide member 52 is regulated by the contact object 430 to the direction along which the reel rotation axis AX1 extends. As a result of this, the variation in curls which the wire W is given can be suppressed. Due to this, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, by which the wire W can be suppressed from being detached from the guide unit 54.

The rebar tying tool 2 further comprises the reel cover 6 (example for a reel stopper) configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32. The contact object 430 is disposed on the reel cover 6 and configured to contact the wire W when the reel cover 6 is in the prohibiting state.

According to the above configuration, by switching the reel cover 6 from the permitting state to the prohibiting state, the contact object 430 can be set in a state capable of contacting the wire W.

When the reel cover 6 is switched from the permitting state to the prohibiting state, the reel cover 6 moves in the closing direction D2 (example for a first direction). When the reel cover 6 is in the prohibiting state, the contact object 430 is configured to contact the wire W in the closing direction D2 with the contact object 430 located between the wire guide member 52 and the reel support member 32.

According to the above configuration, the path along which the wire W is guided by the wire guide member 52 is regulated to the closing direction D2 by the contact object 430. Due to this, variation in curls given to the wire W can be suppressed. This can in turn make it possible to suppress the variation in the trajectories of the wire W fed from the feed unit 50 and suppress the wire W from being detached from the guide unit 54.

The wire guide member 52 comprises the wire guide hole 76 through which the wire W is configured to pass. In the view of the rebar tying tool 2 along the line L1 connecting the center 78a of the inlet 78 of the wire guide hole 76 and the center 80a of the outlet 80 of the wire guide hole 76, when the reel cover 6 is in the prohibiting state, the contact object 430 blocks a part of the inlet 78 of the wire guide hole 76, and when the reel cover 6 is in the permitting state, the contact object 430 does not block the inlet 78 of the wire guide hole 76, or blocks a part of the inlet 78 such that an area of a blocked portion of the inlet 78 that is blocked by the contact object 430 is smaller than the area of the blocked portion that is blocked by the contact object 430 when the reel cover 6 is in the prohibiting state.

According to the above configuration, the contact object 430 blocks a part of the inlet 78 of the wire guide hole 76 when the reel cover 6 is in the prohibiting state. As a result, the path along which the wire W passes through the wire guide hole 76 is regulated by the contact object 430. As a result, variation in the curls given to the wire W can be suppressed. This can in turn suppress variation in the trajectories of the wire W fed from the feed unit 50, and suppress the wire W from being detached from the guide unit 54. It also enables the user to easily insert the wire W into the inlet 78 of the wire guide hole 76 when the reel cover 6 is in the permitting state.

The rebar tying tool 2 further comprises the guide surface 450 disposed along the rim of the inlet 78 of the wire guide hole 76 and configured to guide the wire W into the inlet 78 of the wire guide hole 76. The guide surface 450 faces the contact object 430 when the reel cover 6 is in the prohibiting state.

According to the above configuration, the guide surface 450 can be utilized to easily guide the wire W to the inlet 78 of the wire guide hole 76.

The rebar tying tool 2 further comprises the wall portion 402 (example for a first guide wall) separate from the wire guide member 52, wherein the wall portion 402 comprises the guide surface 450.

According to the above configuration, degree of freedom in design of the guide surface 450 can be improved.

When the reel cover 6 is in the prohibiting state, in the view of the rebar tying tool 2 along the line L1 connecting the center 78a of the inlet 78 of the wire guide hole 76 and the center 80a of the outlet 80 of the wire guide hole 76, the contact object 430 blocks 50% or more an entire area of the inlet 78 of the wire guide hole 76.

According to the above configuration, the contact object 430 can easily contact the wire W. Also, the path along which the wire W is guided by the wire guide member 52 can be further regulated by using the contact object 430. Due to this, variation in the curls given to the wire W can be suppressed. Due to this, variation in the trajectories of the wire W fed from the feed unit 50 can be suppressed, and the wire W can be further suppressed from being detached from the guide unit 54.

The contact object 430 is constituted of a metal.

According to the above configuration, the contact object 430 can be suppressed from wearing out due to it contacting the wire W.

The rebar tying tool 2 according to the present embodiment comprises the feed unit 50 configured to feed the wire W, the guide unit 54 configured to guide the wire W such that the wire is wound around the rebars R, the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1, the wire guide member 52 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50, the contact object 430 configured to contact the wire W, with the contact object 430 located between the wire guide member 52 and the reel support member 32, and the reel cover 6 (example for a reel stopper) configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32. When the reel cover 6 is switched from the permitting state to the prohibiting state, the reel cover 6 moves in the closing direction D2 (example for a first direction), the contact object 430 is disposed on the reel cover 6, and when the reel cover 6 is in the prohibiting state, the contact object 430 is configured to contact the wire W in the closing direction D2 with the contact object 430 located between the wire guide member 52 and the reel support member 32.

According to the above configuration, the contact object 430 contacts the wire W in the closing direction D2 with the contact object 430 located between the wire guide member 52 and the reel support member 32. Due to this, the path along which the wire W is guided by the wire guide member 52 is regulated to the closing direction D2 by the contact object 430. As a result of this, variation in curls given to the wire W can be suppressed. Thus, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, and thus the wire W can be suppressed from being detached from the guide unit 54.

The rebar tying tool 2 according to the present embodiment comprises the feed unit 50 configured to feed the wire W, the guide unit 54 configured to guide the wire W such that the wire W is wound around the rebars R, the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1, the wire guide member 52 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50, the contact object 430 configured to contact the wire W with the contact object 430 located between the wire guide member 52 and the reel support member 32, and the reel cover 6 (example for a reel stopper) configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32. The wire guide member 52 comprises the wire guide hole 76 through which the wire W is configured to pass. In the view of the rebar tying tool 2 along the line L1 connecting the center 78a of the inlet 78 of the wire guide hole 76 and the center 80a of the outlet 80 of the wire guide hole 76, when the reel cover 6 is in the prohibiting state, the contact object 430 blocks a part of the inlet 78 of the wire guide hole 76, and when the reel cover 6 is in the permitting state, the contact object 430 does not block the inlet 78 of the wire guide hole 76, or blocks a part of the inlet 78 such that an area of a blocked portion of the inlet 78 that is blocked by the contact object 430 is smaller than the area of the blocked portion that is blocked by the contact object 430 when the reel cover 6 is in the prohibiting state.

According to the above configuration, the contact object 430 blocks a part of the inlet 78 of the wire guide hole 76 when the reel cover 6 is in the prohibiting state. Due to this, the path along which the wire W passes through the wire guide hole 76 is regulated by the contact object 430. As a result of this, variation in curls given to the wire W can be suppressed. Thus, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, and thus the wire W can be suppressed from being detached from the guide unit 54. Also, when the reel cover 6 is in the permitting state, the contact object 430 does not block the inlet 78 of the wire guide hole 76, or the area of the blocked portion of the inlet 78 that is blocked by the contact object 430 is smaller than the area of the blocked portion of the inlet 78 that is blocked by the contact object 430 when the reel cover 6 is in the prohibiting state. This facilitates insertion of the wire W into the inlet 78 of the wire guide hole 76.

Ninth Embodiment

A ninth embodiment will be described by focusing on points different from the first embodiment. As illustrated in FIG. 23, the rebar tying tool 2 comprises a wire guide member 552 instead of the wire guide member 52 (see FIG. 5) of the first embodiment. The wire guide member 552 comprises a first portion 554 which is a tubular body having its diameter decreasing toward the feed unit 50 and a second portion 556 extending downward from a lower end of the first portion 554. The first portion 554 and the second portion 556 are formed integrally with no seams therebetween. The first portion 554 of the wire guide member 552 defines the wire guide hole 76. The wire guide hole 76 is identical in shape to that described in the first embodiment, and thus reference is made to the first embodiment for details of the shape.

As illustrated in FIG. 24, the rebar tying tool 2 comprises a first guide surface 550a and a second guide surface 550b instead of the guide surface 150 (see FIG. 5). The first guide surface 550a is defined on the left housing 10. The second guide surface 550b is defined on the second portion 556 of the wire guide member 552. The first guide surface 550a has a shape extending along a side surface of a virtual cone (in the present embodiment, circular cone) defined by the second guide surface 550b (i.e., inner surface of the wire guide member 552). Due to this, there is no step between the first guide surface 550a and the second guide surface 550b. If there is a step between the first guide surface 550a and the second guide surface 550b, such step may give an unintended curl on the wire W drawn out from the bobbin 26. In the present embodiment, since there is no step between the first guide surface 550a and the second guide surface 550b, the wire W drawn out from the bobbin 26 can be suppressed from being given an unintended curl.

In the present embodiment, the wire guide member 552 and a wall portion 502 defining the first guide surface 550a among the left housing 10 will be collectively termed “wire guide wall 504”. The wire guide wall 504 is substantially identical in shape to that of the wire guide wall 404 (see FIG. 20) described in the eighth embodiment. The wire guide wall 504 guides the wire W drawn out from the bobbin 26 toward the feed unit 50. A start point of the wire guide wall 504 is a lower end of the wall portion 502, and a termination point of the wire guide wall 504 is an upper end of the wire guide member 552 (i.e., the outlet 80). As illustrated in FIG. 23, the wire guide wall 504 is outside the reel accommodating space 36. In other words, the wire guide wall 504 does not serve as a wall surrounding the reel RL. In FIG. 23, for clear illustration, the boundary 36a of the reel accommodating space 36 is shown in a broken line.

As illustrated in FIG. 23, the rebar tying tool 2 comprises the contact object 430 instead of the contact object 130 in the first embodiment (see FIGS. 4, 5). The contact object 430 is the same one described in the eight embodiment, and thus reference is made to the eighth embodiment for its details.

Effects

The rebar tying tool 2 according to the present embodiment comprises the feed unit 50 configured to feed the wire W, the guide unit 54 configured to guide the wire W such that the wire W is wound around the rebars R, the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1, the wire guide member 552 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50, and the contact object 430 configured to contact the wire W in the direction in which the reel rotation axis AX1 extends, with the contact object 430 located between the wire guide member 552 and the reel support member 32.

According to the above configuration, the contact object 430 contacts the wire W in the direction along which the reel rotation axis AX1 extends, with the contact object 430 located between the wire guide member 552 and the reel support member 32. Due to this, the path along which the wire W is guided by the wire guide member 552 is regulated by the contact object 430 to the direction along which the reel rotation axis AX1 extends. As a result of this, the variation in curls which the wire W is given can be suppressed. Due to this, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, by which the wire W can be suppressed from being detached from the guide unit 54.

The rebar tying tool 2 further comprises the reel cover 6 (example for a reel stopper) configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32. The contact object 430 is disposed on the reel cover 6 and configured to contact the wire W when the reel cover 6 is in the prohibiting state.

According to the above configuration, by switching the reel cover 6 from the permitting state to the prohibiting state, the contact object 430 can be set in a state capable of contacting the wire W.

When the reel cover 6 is switched from the permitting state to the prohibiting state, the reel cover 6 moves in the closing direction D2 (example for a first direction). When the reel cover 6 is in the prohibiting state, the contact object 430 is configured to contact the wire W in the closing direction D2 with the contact object 430 located between the wire guide member 552 and the reel support member 32.

According to the above configuration, the path along which the wire W is guided by the wire guide member 552 is regulated to the closing direction D2 by the contact object 430. Due to this, variation in curls given to the wire W can be suppressed. This can in turn make it possible to suppress the variation in the trajectories of the wire W fed from the feed unit 50 and suppress the wire W from being detached from the guide unit 54.

The wire guide member 552 comprises the wire guide hole 76 through which the wire W is configured to pass. In the view of the rebar tying tool 2 along the line L1 connecting the center 78a of the inlet 78 of the wire guide hole 76 and the center 80a of the outlet 80 of the wire guide hole 76, when the reel cover 6 is in the prohibiting state, the contact object 430 blocks a part of the inlet 78 of the wire guide hole 76, and when the reel cover 6 is in the permitting state, the contact object 430 does not block the inlet 78 of the wire guide hole 76, or blocks a part of the inlet 78 such that an area of a blocked portion of the inlet 78 that is blocked by the contact object 430 is smaller than the area of the blocked portion of the inlet 78 that is blocked by the contact object 430 when the reel cover 6 is in the prohibiting state.

According to the above configuration, the contact object 430 blocks a part of the inlet 78 of the wire guide hole 76 when the reel cover 6 is in the prohibiting state. As a result, the path along which the wire W passes through the wire guide hole 76 is regulated by the contact object 430. As a result, variation in the curls given to the wire W can be suppressed. This can in turn suppress variation in the trajectories of the wire W fed from the feed unit 50, and suppress the wire W from being detached from the guide unit 54. It also enables the user to easily insert the wire W into the inlet 78 of the wire guide hole 76 when the reel cover 6 is in the permitting state.

The rebar tying tool 2 further comprises the first guide surface 550a and the second guide surface 550b disposed along the rim of the inlet 78 of the wire guide hole 76 and configured to guide the wire W into the inlet 78 of the wire guide hole 76. The first guide surface 550a and the second guide surface 550b face the contact object 430 when the reel cover 6 is in the prohibiting state.

According to the above configuration, the first guide surface 550a and the second guide surface 550b can be utilized to easily guide the wire W to the inlet 78 of the wire guide hole 76.

The rebar tying tool 2 further comprises the wall portion 502 (example for a first guide wall) separate from the wire guide member 552, wherein the wall portion 502 comprises the first guide surface 550a.

According to the above configuration, degree of freedom in design of the first guide surface 550a can be improved.

Also, the second guide surface 550b is defined on the wire guide member 552.

According to the above configuration, the number of components in the rebar tying tool 2 can be reduced.

When the reel cover 6 is in the prohibiting state, in the view of the rebar tying tool 2 along the line L1 connecting the center 78a of the inlet 78 of the wire guide hole 76 and the center 80a of the outlet 80 of the wire guide hole 76, the contact object 430 blocks 50% or more an entire area of the inlet 78 of the wire guide hole 76.

According to the above configuration, the contact object 430 can easily contact the wire W. Also, the path along which the wire W is guided by the wire guide member 552 can be further regulated by using the contact object 430. Due to this, variation in the curls given to the wire W can be suppressed. Due to this, variation in the trajectories of the wire W fed from the feed unit 50 can be suppressed, and the wire W can be further suppressed from being detached from the guide unit 54.

The contact object 430 is constituted of a metal.

According to the above configuration, the contact object 430 can be suppressed from wearing out due to it contacting the wire W.

The rebar tying tool 2 according to the present embodiment comprises the feed unit 50 configured to feed the wire W, the guide unit 54 configured to guide the wire W such that the wire Wis wound around the rebars R, the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1, the wire guide member 552 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50, the contact object 430 configured to contact the wire W, with the contact object 430 located between the wire guide member 552 and the reel support member 32, and the reel cover 6 (example for a reel stopper) configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32. When the reel cover 6 is switched from the permitting state to the prohibiting state, the reel cover 6 moves in the closing direction D2 (example for a first direction), the contact object 430 is disposed on the reel cover 6, and when the reel cover 6 is in the prohibiting state, the contact object 430 is configured to contact the wire W in the closing direction D2 with the contact object 430 located between the wire guide member 552 and the reel support member 32.

According to the above configuration, the contact object 430 contacts the wire W in the closing direction D2 with the contact object 430 located between the wire guide member 552 and the reel support member 32. Due to this, the path along which the wire W is guided by the wire guide member 552 is regulated to the closing direction D2 by the contact object 430. As a result of this, variation in curls given to the wire W can be suppressed. Thus, variation in the trajectories of the wire W fed by the feed unit 50 can be suppressed, and thus the wire W can be suppressed from being detached from the guide unit 54.

The rebar tying tool 2 according to the present embodiment comprises the feed unit 50 configured to feed the wire W, the guide unit 54 configured to guide the wire W such that the wire W is wound around the rebars R, the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1, the wire guide member 552 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50, the contact object 430 configured to contact the wire W with the contact object 430 located between the wire guide member 552 and the reel support member 32, and the reel cover 6 (example for a reel stopper) configured to be switched between the prohibiting state in which the reel cover 6 prohibits the reel RL from being detached from the reel support member 32 and the permitting state in which the reel cover 6 permits the reel RL to be detached from the reel support member 32. The wire guide member 552 comprises the wire guide hole 76 through which the wire W is configured to pass. In the view of the rebar tying tool 2 along the line L1 connecting the center 78a of the inlet 78 of the wire guide hole 76 and the center 80a of the outlet 80 of the wire guide hole 76, when the reel cover 6 is in the prohibiting state, the contact object 430 blocks a part of the inlet 78 of the wire guide hole 76, and when the reel cover 6 is in the permitting state, the contact object 430 does not block the inlet 78 of the wire guide hole 76, or blocks a part of the inlet 78 such that an area of a blocked portion of the inlet 78 that is blocked by the contact object 430 is smaller than the area of the blocked portion that is blocked by the contact object 430 when the reel cover 6 is in the prohibiting state.

According to the above configuration, the contact object 430 blocks a part of the inlet 78 of the wire guide hole 76 when the reel cover 6 is in the prohibiting state. Due to this, the path along which the wire W passes through the wire guide hole 76 is regulated by the contact object 430. As a result of this, variation in curls given to the wire W can be suppressed. Thus, variation in the trajectories of the wire W fed from the feed unit 50 can be suppressed, and thus the wire W can be suppressed from being detached from the guide unit 54. Also, when the reel cover 6 is in the permitting state, the contact object 430 does not block the inlet 78 of the wire guide hole 76, or the area of the blocked portion of the inlet 78 that is blocked by the contact object 430 is smaller than the area of the blocked portion of the inlet 78 that is blocked by the contact object 430 when the reel cover 6 is in the prohibiting state. This facilitates insertion of the wire W into the inlet 78 of the wire guide hole 76.

Tenth Embodiment

A tenth embodiment will be described by focusing on points different from the first embodiment. As illustrated in FIGS. 25, 26, the rebar tying tool 2 comprises a wire guide member 652 instead of the wire guide member 52 (see FIG. 5) of the first embodiment. The rebar tying tool 2 does not comprise the contact object 130 in the first embodiment (see FIG. 5).

The wire guide member 652 is a tubular body having an outer shape of a substantially semi circle in a cross-section perpendicular to the up-down direction. The wire guide member 652 comprises a flat wall 654 having its inner side being a flat surface which is a straight line in the cross-section perpendicular to the up-down direction and a curved wall 656 having its inner side being a curved surface which is a circular arc in the cross-section perpendicular to the up-down direction. The wire guide member 652 defines a wire guide hole 676 extending in the up-down direction with its inner surface. The wire guide hole 676 comprises an inlet 678 disposed at a lower end of the wire guide hole 676 and an outlet 680 disposed at an upper end of the wire guide hole 676. An opening area of the inlet 678 is larger than an opening area of the outlet 680.

As illustrated in FIG. 26, the rebar tying tool 2 comprises a guide surface 650 instead of the guide surface 150 (see FIG. 5). The guide surface 650 is defined on the left housing 10. The guide surface 650 has a shape extending along a side surface of a virtual cone (in the present embodiment, a cone with a semi-circular bottom surface) defined by an inner surface of the wire guide member 652 (specifically, inner surface of the curved wall 656). Due to this, there is no step between the guide surface 650 and the inner surface of the wire guide member 652. If there is a step between the guide surface 650 and the inner surface of the wire guide member 652, such step may give an unintended curl on the wire W drawn out from the bobbin 26. In the present embodiment, since there is no step between the guide surface 650 and the inner surface of the wire guide member 652, the wire W drawn out from the bobbin 26 can be suppressed from being given an unintended curl.

In the present embodiment, the wire guide member 652 and a wall portion 602 defining the guide surface 650 among the left housing 10 will be collectively termed “wire guide wall 604”. The wire guide wall 604 guides the wire W drawn out from the bobbin 26 toward the feed unit 50. A start point of the wire guide wall 604 is a lower end of the wall portion 602, and a termination point of the wire guide wall 604 is an upper end of the wire guide member 652 (i.e., the outlet 680). As illustrated in FIG. 25, the wire guide wall 604 is outside the reel accommodating space 36. In other words, the wire guide wall 604 does not serve as a wall surrounding the reel RL. In FIG. 25, for clear illustration, the boundary 36a of the reel accommodating space 36 is shown in a broken line.

As illustrated in FIG. 27, the wire guide wall 604 comprises a left contact portion 606L which contacts the wire W drawn out from a spot adjacent to the left flange 28L. The left contact portion 606L is a lower end of the wire guide wall 604 (i.e., lower end of the flat wall 654 of the wire guide member 652) on the left side as viewed from the wire W. The left contact portion 606L contacts a left surface of the wire W from the left side of the wire W.

As illustrated in FIG. 28, the wire guide wall 604 comprises a right contact portion 606R which contacts the wire W drawn out from a spot adjacent to the right flange 28R. The right contact portion 606R is the lower end of the wire guide wall 604 (i.e., lower end of the wall portion 602) on the right side as viewed from the wire W. The right contact portion 606R contacts a right surface of the wire W from the right side of the wire W.

As illustrated in FIGS. 27 and 28, the path along which the wire W is guided by the wire guide wall 604 is regulated in the left-right direction by the left contact portion 606L and the right contact portion 606R. As a result of this, variation in curls given to the W can be suppressed. This can in turn make it possible to suppress the variation in the trajectories of the wire W fed from the feed unit 50 and suppress the wire W from being detached from the guide unit 54 (see FIG. 25).

The left contact portion 606L and the right contact portion 606R are positioned downward (i.e., direction approaching the bobbin 26) as viewed from a virtual plane P bisecting the wire guide wall 604 in the up-down direction. Due to this, the left contact portion 606L and the right contact portion 606R contact the wire W at positions close to the bobbin 26. Thus, the trajectory of the wire W drawn out from the bobbin 26 can be stabilized immediately after being drawn from the bobbin 26.

Effects

The rebar tying tool 2 of the present embodiment comprises the feed unit 50 configured to feed the wire W, the guide unit 54 configured to guide the wire W such that the wire W is wound around the rebars R, the reel support member 32 supporting the reel RL including the wire W such that the reel RL is rotatable about the reel rotation axis AX1, and the wire guide wall 604 located between the feed unit 50 and the reel support member 32 and configured to guide the wire W toward the feed unit 50. The reel RL comprises the bobbin 26 including the bobbin body 27 around which the wire Wis wound, the flange 28L (example for a first flange) located at one end of the bobbin body 27 in a direction in which the reel rotation axis AX1 extends, and the flange 28R (example for a second flange) located at the other end of the bobbin body 27 in the direction in which the reel rotation axis AX1 extends. The wire guide wall 604 comprises the left contact portion 606L (example for a first wire contact portion) configured to contact the wire W when the wire W is drawn out from a position adjacent to the flange 28L and the right contact portion 606R (example for a second wire contact portion) configured to contact the wire W when the wire W is drawn out from a position adjacent to the flange 28R. Each of the left contact portion 606L and the right contact portion 606R are offset downward as they are seen along the virtual plane P bisecting the wire guide wall 604 upward (example for the second direction) and downward (example for the third direction).

According to the above configuration, the path along which the wire W is guided by the wire guide wall 604 is regulated by the left contact portion 606L and the right contact portion 606R. As a result, the variation in the curls given to the wire W can be suppressed. This can in turn suppress the variation in the trajectories of the wire W fed from the feed unit 50, and suppress the wire W from being detached from the guide unit 54. In addition, the left contact portion 606L and the right contact portion 606R are located downward (i.e., the direction approaching the bobbin 26) when viewed along the virtual plane P bisecting the wire guide wall 604 in the up-down direction. Due to this, each of the left contact portion 606L and the right contact portion 606R contact the wire W in a position close to the bobbin 26. This allows the trajectory of the wire W drawn out from the bobbin 26 to be stabilized from immediately after the wire W is drawn out from the bobbin 26.

The downward end of the wire guide wall 604, located on the left side (example for a fourth direction) as viewed from the wire W passing through the wire guide wall 604, functions as the left contact portion 606L. The downward end of the wire guide wall 604, located on the right side (example for a fifth direction) as viewed from the wire W passing through the wire guide wall 604, functions as the right contact portion 606R.

According to the above configuration, each of the left contact portion 606L and the right contact portion 606R is positioned at the spot as close as possible to the bobbin 26 in the wire guide wall 604. Thus, each of the left contact portion 606L and the right contact portion 606R contacts the wire W at the spot close to the bobbin 26. Due to this, the trajectory of the wire W drawn out from the bobbin 26 can be stabilized immediately after the wire W is drawn out from the bobbin 26.

Modifications

In an embodiment, the contact object 130, 230, 330, 430 may contact the wire W from the right side. In this configuration, the left end of the contact object 130, 230, 330, 430 corresponds to the contact portion configured to contact the wire W.

In an embodiment, the contact object 130, 230, 330, 430 may be constituted of a resin material.

In an embodiment, in the left-right direction, the center in the left-right direction of the contact object 130, the right end of the contact object 130, the center in the left-right direction of the wire guide hole 76, the center in the left-right direction between the first rotation axis AX3 and the second rotation axis AX4, the center in the left-right direction of the first wire path 88, and the center in the left-right direction of the second wire path 90 may all be offset rightward from the center in the left-right direction of the bobbin 26. Also, one or more of the center in the left-right direction of the contact object 130, the right end of the contact object 130, the center in the left-right direction of the wire guide hole 76, the center in the left-right direction between the first rotation axis AX3 and the second rotation axis AX4, the center in the left-right direction of the first wire path 88, and the center in the left-right direction of the second wire path 90 may be offset leftward from the center in the left-right direction of the bobbin 26, and the remaining one(s) may be offset rightward from the center in the left-right direction of the bobbin 26.

In an embodiment, the rebar tying tool 2 may comprise a plurality of the contact objects 130, 230, 330, 430. In this configuration, one or more of the plurality of contact objects 130, 230, 330, 430 may contact the wire W from the left side, and the remaining one(s) of the plurality of contact objects 130, 230, 330, 430 may contact the wire W from the right side. Further, one or more of the plurality of contact objects 130, 230, 330, 430 may be disposed on the reel cover 6 and the remaining one(s) of the plurality of contact objects 130, 230, 330, 430 may be disposed on the body housing 4.

In an embodiment, the reel support portion 22 may not comprise the reel accommodating space 36. In this configuration, when the reel cover 6 is in the prohibiting state, a part of the reel RL is exposed.

In an embodiment, the rebar tying tool 2 may be an apparatus configured to autonomously move on the rebars R.

A part other than the upper end of the flat wall 654 among the wire guide wall 604 may function as the left contact portion 606L. For example, projection(s) may be defined on the inner surface of the flat wall 654, and such projection(s) may function as the left contact portion 606L. Likewise, a part other than the upper end of the wall portion 602 among the wire guide wall 604 may function as the right contact portion 606R. For example, projection(s) may be defined on the inner surface of the wall portion 602, and such projection(s) may function as the right contact portion 606R.