CIRCULAR ANNULAR TRAINING EQUIPMENT

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The entire disclosure of Japanese Patent Application No. 2024-086078 filed on May 28, 2024, is incorporated herein by reference in its entirety.

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to a training equipment used by gripping for strengthening mainly a wrist and a front arm.

Description of the Related Art

Conventionally, a dumbbell has been known as an equipment for strengthening a front arm. From a characteristic of the equipment, the dumbbell can also strengthen a wrist as a side effect. A load of training can be adjusted using dumbbells having different weights.

The wrist is a part having flexibility that allows the wrist to move in a wide range including the rotation in addition to the movement in the front-and-rear direction and in the left-and-right direction. On the other hand, the wrist is an extremely unstable part and hence, when a muscle strength of the wrist is weak, a person cannot manipulate the equipment accurately and vigorously by gripping the equipment.

Accordingly, in many sports including baseball, golf, and badminton where the enhancement of performance can be expected by strengthening a wrist, it is necessary to strengthen the wrist. From this point of view, a large number of types of training equipment are commercially available on a market.

Further, with respect to equipment used in training for strengthening muscle (hereinafter, referred to as “muscle training”) including a dumbbell, many types of equipment are used by gripping the equipment. Accordingly, when muscle training is performed with a large load, there may be a case where a wrist is injured due to the unintended rotation of the wrist thus making it difficult to perform muscle training.

In such circumstances, as an equipment capable of adjusting a load of training, for example, JP-UM-51-078060 discloses a dumbbell where a hollow spherical body into which water can be charged is connected to both sides of a grip of the dumbbell, and a charging port with a plug is formed on an upper portion of the hollow spherical body, and a water amount measurement line is written on an outer surface of the dumbbell.

SUMMARY OF THE INVENTION

It is true that the dumbbell described in JP-UM-51-078060 can be used as a dumbbell having a weight that is a load intended by a user by charging an arbitrary amount of water in the dumbbell.

Accordingly, it is unnecessary to perform training by preparing dumbbells having different weights. Further, in a case where a user wants to strengthen a wrist that is particularly likely to be injured, the dumbbell exhibits excellent property that the dumbbell allows a user to adjust a load to a proper load corresponding to a portion to be strengthened by reducing an amount of water.

However, the dumbbell is structurally designed to satisfy a relationship where a heavy weight body having a spherical body shape or the like is disposed on both ends of a grip and hence, the dumbbell is designed such that the dumbbell gives a load that is dependent on a change of a potential energy generated mainly by raising or lowering the dumbbell to a user. Accordingly, with respect to effects that can be obtained by charging water into the spherical bodies, the dumbbell exhibits no other particular or outstanding advantageous effects except for the adjustment of a load by changing the weight of the dumbbell and hence, the dumbbell is insufficient to enable a user to achieve the higher degree of flexibility and the enhancement of a muscle strength of an unstable wrist including the strengthening of a muscle strength of the wrist relevant to the rotation of the wrist.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a training equipment that can be used in a load adjustable manner for strengthening a wrist and a front arm, mainly for strengthening a muscle strength relevant to the rotation of the wrist.

Solution to Problem

To achieve the above-mentioned object, the present invention provides the following configurations.

According to the invention called for in claim 1, there is provided a circular annular training equipment that includes: an outer peripheral portion having a circular annular shape; and a grip portion that has both ends thereof continuously connected between opposedly facing inner side walls of the outer peripheral portion, wherein the outer peripheral portion is formed in a tubular shape having an internal space into which a fluid body is chargeable, and includes a charging portion provided with a lid that is openable and closable for charging or discharging the fluid body into or from the internal space, the outer peripheral portion includes a plurality of buffer portions each having a back-and-forth communication portion that is an opening formed by narrowing a cross-sectional opening of the internal space, each of the back-and-forth communication portions is provided for allowing the fluid body to be movable in the internal space therethrough, and the outer peripheral portion includes a plurality of partition portions that prevent the fluid body charged into the internal space from moving in the internal space, the partition portions being formed on portions of the outer peripheral portion to which both ends of the grip portion are continuously connected.

According to the invention called for in claim 2, wherein, in the buffer portion, a left-right-separation portion having a columnar shape that forms the back-and-forth communication portions on both left and right sides thereof is formed in a front-and-rear direction of the outer peripheral portion, that is, in a direction perpendicular to the axis direction of the grip portion.

According to the invention called for in claim 1, the circular annular training equipment includes: the outer peripheral portion having a circular annular shape; and the grip portion that has both ends thereof continuously connected between opposedly facing inner side walls of the outer peripheral portion, wherein the charging portion is formed in the outer peripheral portion, the charging portion being formed in a tubular shape and having the internal space in which a fluid body is chargeable and has the lid that is openable and closable for charging or discharging the fluid body in the outer peripheral portion. With such a configuration, the outer peripheral portion is positioned on a periphery of a hand that grips the circular annular training equipment and hence, in performing the training in which a wrist is rotated, a centrifugal force can be efficiently utilized. Further, a load can be easily adjusted by an amount of a charged fluid body. Still further, the circular annular training equipment can be used in place of the dumbbell.

Further, by leaving a suitable space in the internal space of the outer peripheral portion without charging a fluid body into the entire internal space, the user can receive a suitable load also at the time of performing a reverse rotating operation while feeling a motion of the fluid body in the internal space generated by a centrifugal force, by rotating the circular annular training equipment about his/her wrist.

The buffer portion is formed in the outer peripheral portion, and the buffer portion has the back-and-forth communication portion that is the opening formed by narrowing a cross-sectional opening of the internal space and is provided for allowing the fluid body to move in the outer peripheral portion therethrough. With such a configuration, by leaving a suitable space in the internal space of the outer peripheral portion without charging a fluid body into the entire internal space, the fluid body that passes through the back-and-forth communication portion when the circular annular training equipment is rotated about the wrist makes the buffer portion become resistance that corresponds to a rotational speed of the circular annular training equipment and an amount of charged fluid body. Accordingly, the circular annular training equipment can give a complicated load to the user.

The partition portion is formed in the outer peripheral portion so as to prevent the fluid body charged into the outer peripheral portion from moving in the outer peripheral portion by closing the internal space. With such a configuration, by leaving a suitable space in the internal space of the outer peripheral portion without charging a fluid body into the entire internal space, when the circular annular training equipment is rotated about the wrist of the user, the fluid body can be moved in the internal space using the partition portions as base points and, further, the circular annular training equipment can give a new load due to impingement of the fluid body to the partition portion including also during the training when the reverse rotation operation is performed.

Further, the plurality of partition portions are formed on the portions of the outer peripheral portion to which both ends of the grip portion are continuously connected respectively. With such a configuration, by leaving a suitable space in the internal space of the outer peripheral portion without charging a fluid body into the entire internal space, the fluid body moves independently between the upper half portion and the lower half portion of the outer peripheral portion when the circular annular training equipment is rotated about the wrist and hence, the circular annular training equipment can give a complicated load to the user.

According to the invention called for in claim 2, in the buffer portion, the left-right-separation portion having a columnar shape that forms the back-and-forth communication portions on both left and right side thereof is formed in a front-and-rear direction of the outer peripheral portion, that is, in a direction perpendicular to the axis direction of the grip portion. With such a configuration, by leaving a suitable space in the internal space of the outer peripheral portion without charging a fluid body into the entire internal space, the fluid body passes through the back-and-forth communication portion when the circular annular training equipment is rotated about the wrist, and is moved to either one of sides of the left and right separation portion depending on the inclination, a rotational speed and an amount of charged fluid body. Accordingly, the user can perform training while amusing himself/herself by performing the adjustment of training equipment and feeling the motion of the fluid body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows (a) a perspective view of a circular annular training equipment according to the present embodiment and (b) a front view of the circular annular training equipment according to the present embodiment.

FIG. 2 shows (a) a cross-sectional view of the circular annular training equipment according to the present embodiment taken along a line A-A in (b) of FIG. 1 and (b) a cross-sectional view of the circular annular training equipment according to the present embodiment taken along a line B-B.

FIG. 3 shows (a) a see-through front view of the circular annular training equipment according to the present embodiment, (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line C-C in (a) of FIG. 3, and (c) an enlarged cross-sectional view of a hollow space formed in an outer peripheral portion of the circular annular training equipment.

FIG. 4 shows (a) another see-through front view of the circular annular training equipment according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line D-D in (a) of FIG. 4.

FIG. 5 shows (a) another see-through front view of the circular annular training equipment according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line E-E in (a) of FIG. 5.

FIG. 6 shows (a) another see-through front view of the circular annular training equipment according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line F-F in (a) of FIG. 6.

FIG. 7 shows (a) another see-through front view of the circular annular training equipment according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line G-G in (a) of FIG. 7.

FIG. 8 shows (a) another see-through front view of the circular annular training equipment according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line H-H in (a) of FIG. 8.

FIG. 9 shows (a) a see-through front view of the circular annular training equipment having partition portions according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line I-I in (a) of FIG. 9.

FIG. 10 shows (a) another see-through front view of the circular annular training equipment having partition portions according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line J-J in (a) of FIG. 10.

FIG. 11 shows (a) another see-through front view of the circular annular training equipment having partition portions according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line K-K in (a) of FIG. 11.

FIG. 12 shows (a) another see-through front view of the circular annular training equipment having partition portions according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line L-L in (a) of FIG. 12.

FIG. 13 shows (a) another see-through front view of the circular annular training equipment having partition portions according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line M-M in (a) of FIG. 13.

FIG. 14 shows (a) another see-through front view of the circular annular training equipment having partition portions according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line N-N in (a) of FIG. 14.

FIG. 15 shows (a) another see-through front view of the circular annular training equipment having partition portions according to the present embodiment and (b) an enlarged cross-sectional view of the circular annular training equipment taken along a line O-O in (a) of FIG. 15.

FIG. 16 shows (a) a see-through front view illustrating a modification of a grip portion of the circular annular training equipment according to the present embodiment and (b) a see-through front view illustrating a modification of the grip portion of the circular annular training equipment having partition portions according to the present embodiment.

FIG. 17 is an explanatory view illustrating a use state of the circular annular training equipment according to the present embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The gist of a circular annular training equipment according to the present invention lies in that the circular annular training equipment includes: an outer peripheral portion having a circular annular shape; and a grip portion having both ends thereof continuously formed between inner side walls of the outer peripheral portion that opposedly face each other, wherein the outer peripheral portion is formed in a tubular shape having an internal space in which a fluid body is chargeable, and a charging portion forming a lid that is openable and closable for charging or discharging the fluid body. That is, the present invention provides the training equipment used by gripping in a state that a load is adjustable for strengthening a wrist and a front arm by mainly aiming at the enhancement of a muscle strength relevant to the rotation of a wrist.

Hereinafter, one embodiment of the circular annular training equipment according to the present invention is described with reference to drawings. Further, in the description made hereinafter, with respect to the structures and parts that have the identical configuration or the left-and-right symmetrical configuration, the same symbols are attached in principle, and only the structures and parts on either one side are described and the description is omitted with respect to the structures and parts on the other side.

Further, in the description of this embodiment, the description is made by assuming a side illustrated in FIG. 1(b) as a front side (front) of the circular annular training equipment 1, a back side of the circular annular training equipment 1 as a rear side (rear), a direction that the grip portion 17 extends as a horizontal direction, an upper side above the grip portion 17 as an upper half portion 3, and a lower side below the grip portion 17 as a lower half portion 4.

In the present invention, a fluid body is not limited to a liquid such as water, and may be a mass of substance with which an internal space 9 is charged approximately without forming a gap in the internal space 9 when the internal space 9 of the circular annular training equipment 1 is charged with the fluid body. For example, a powdery material or a granular material that is formed of sands, sand iron or a fine synthetic resin material may also be used as a fluid body.

As illustrated in FIG. 1(a), FIG. 1(b), FIG. 2(a), FIG. 2(b), the circular annular training equipment 1 according to the embodiment of the present invention includes: the outer peripheral portion 2 having a circular annular shape; and the grip portion 17 continuously formed with both ends between inner side walls of the outer peripheral portion 2 that opposedly face each other. The outer peripheral portion 2 is formed in a tubular shape having the internal space 9 in which a fluid body is chargeable, and includes a charging portion 5 that has a lid 7 openable and closable for charging or discharging a fluid body.

Accordingly, when the lid of the charging portion 5 is opened, an arbitrary amount of fluid body is charged into the internal space 9 of the outer peripheral portion 2, and when the lid of the charging portion 5 is closed, as illustrated in FIG. 17, a user M can exercise training by gripping the grip portion 17 with his/her hand h.

Further, in a case where the internal space 9 of the outer peripheral portion 2 is not fully charged with a fluid body thus leaving a proper space in the internal space 9, when the user M rotates the circular annular training equipment 1 with respect to his/her wrist, the user M can apply a proper load to the wrist while feeling the movement of the fluid body in the internal space 9 generated by a centrifugal force.

Hereinafter, the configurations of the respective portions of the circular annular training equipment 1 are specifically described in detail with reference to drawings.

As illustrated in FIG. 1(a), FIG. 1(b), FIG. 2(a), and FIG. 2(b), the circular annular training equipment 1 is constituted of: the outer peripheral portion 2 formed in a circular annular shape by forming a hollow circular tube made of a synthetic resin material in an endless shape; and the solid round-rod-shaped grip portion 17 made of a synthetic resin material having a diameter smaller than a diameter of the outer peripheral portion 2 in cross section, and having both ends thereof continuously formed between the inner side walls that opposedly face the outer peripheral portion 2.

The charging portion 5 whose lid 7 is openable and closable for charging or discharging a fluid body into or from the internal space 9 is formed on an upper portion of a front side of the outer peripheral portion 2. In this embodiment, the charging portion 5 is constituted of: a charging opening 6 that is formed in the outer peripheral portion 2 and in which female threads are formed; and the lid 7 that has an outer periphery on which male threads are formed and has a head portion formed in a crucifix shape in a recessed manner. The lid 7 is hermetically closed by making the charging portion 5 threadedly engage with the charging opening 6.

The outer peripheral portion 2 is not limited to the configuration that uses a circular tube, and an angular tube or the like may be used. The grip portion 17 may be also formed of a hollow member. Further, the grip portion 17 may not be limited to a round rod shape, and may be formed in a shape that allows the user M to easily grip the grip portion 17.

The shape and the structure of the charging portion 5 are not limited to this embodiment, and any configurations may be adopted provided that a fluid body can be charged and discharged and a fluid does not flow out to the outside in a hermetically plugged state.

Further, the circular annular training equipment 1 according to this embodiment includes, as illustrated in FIG. 3 to FIG. 8, buffer portions 10 that are formed on the outer peripheral portion 2. In each buffer portion 10, a back-and-forth communication portion 12 that is an opening formed by narrowing a cross-sectional opening of the internal space 9 is formed. With such a configuration, it is possible to make the fluid move in the internal space through the back-and-forth communication portions 12.

That is, in the internal space 9 of the circular tube that allows the outer peripheral portion 2 to communicate in a donut shape, the back-and-forth communication portions 12 that are openings of a size that does not obstruct the communication of a fluid body are formed. FIG. 3(b) describes the configuration where the buffer portion 10 where the circular back-and-forth communication portion 12 having a circular shape is formed at the center of a buffer plate 11. The buffer portions 10 are formed at four places in the internal space 9 as illustrated in FIG. 3(a).

Further, in the buffer portion 10 illustrated in FIG. 4(b), the buffer plate 11 having a circular shape that extends in the front-and-rear direction of the outer peripheral portion 2, that is, in the direction perpendicular to a front-rear side extends in the direction is disposed in such a manner that a left-and-right separation portion 13 is formed in the buffer plate 11. On left and right sides of the left-and-right separation portion 13, the back-and-forth communication portions 12 are formed by boring the circular buffer plate 11. The buffer portions 10 are formed in the internal space 9 at four places as illustrated in FIG. 4(a).

The buffer portion 10 illustrated in FIG. 5(b) is configured such that the semicircular buffer plates 11 are formed in the internal space 9 of the outer peripheral portion 2 at four places in a radially extending manner as illustrated in FIG. 5(a), and an opening portion formed in the buffer plate 11 on a front side forms the back-and-forth communication portion 12.

Further, the buffer portion 10 illustrated in FIG. 6(b) is configured such that the internal space 9 is divided in two concentrically, a semicircular buffer plate 11 is formed in an outer diameter side of the internal space 9, and an opening is formed on an inner diameter side of the internal space 9. The opening is formed as the back-and-forth communication portions 12. The buffer portions 10 are formed in the internal space 9 at four places as illustrated in FIG. 6(a).

Further, the buffer portion 10 illustrated in FIG. 7(b) is configured such that the internal space 9 is divided in two concentrically, a semicircular buffer plate 11 is formed in an inner diameter side of the internal space 9, and an opening is formed on the outer diameter side of the internal space 9. The opening is formed as the back-and-forth communication portion 12. The buffer portions 10 are formed in the internal space 9 at four places as illustrated in FIG. 7(a).

Further, the buffer portion 10 illustrated in FIG. 8(b) is configured such that the internal space 9 is divided in three concentrically. That is, an approximately semicircular buffer plate 11 is formed on a radially outer side and a radially inner side of the internal space 9 respectively, and an opening that is a gap formed between these approximately semicircular buffer plates 11 is formed as the back-and-forth communication portion 12. The buffer portions 10 are formed in the internal space 9 at four places as illustrated in FIG. 8(a).

As described above, the above-described configurations of the buffer portion 10 exemplify one embodiment of the present invention. However, the shape and the configuration of the buffer portion 10 are not limited to the above-mentioned shapes and configurations, and various modifications and changes are conceivable without departing from the gist of the present invention.

The number and the positions of the buffer portions 10 are not limited to this embodiment and, further, a plurality of buffer portions 10 having different shapes may be also formed in mixture.

Further, in the circular annular training equipment 1 according to this embodiment, as illustrated in FIG. 9(a) and FIG. 9(b), partition portions 15 that close a charged fluid body in a non-movable manner in the outer peripheral portion 2 can be formed on the outer peripheral portion 2.

That is, in the internal space 9 of the circular tube having the outer peripheral portion 2 that communicates in a donut shape, the circular-disk-shaped partition portions 15 that interrupt and close the communication of a fluid body are formed. In this embodiment, as illustrated in FIG. 9, in the internal space 9 of the outer peripheral portion 2, the partition portion 15 are formed at places to which both ends the grip portion 17 are continuously connected respectively.

In this case, it is necessary to charge a fluid body into an upper half portion 3 and a lower half portion 4 of the outer peripheral portion 2 respectively and hence, a charging portion 5 substantially equal to above-mentioned charging portion 5 is also formed on a lower portion of the outer peripheral portion 2 on a rear side.

In the circular annular training equipment 1 having such a configuration as illustrated in FIG. 10 to FIG. 15, the above-mentioned buffer portion 10 can be formed also in the internal space 9.

Further, in the circular annular training equipment 1 according to this embodiment, as illustrated in FIG. 16(a) and FIG. 16(b), the grip portion 17 may be formed in a cruciform.

The circular annular training equipment 1 according to the embodiment is configured as described heretofore.

As described above, the circular annular training equipment 1 includes: the outer peripheral portion 2 having a circular annular shape; and the grip portion 17 that has both ends thereof continuously formed between the inner side walls that opposedly face each other. The outer peripheral portion 2 is formed into a tubular shape having an internal space 9 in which a fluid body can be charged, and the charging portion 6 with the lid 7 openable and closable to charge and discharge a fluid body is formed. With such a configuration, the outer peripheral portion 2 is positioned on a periphery of a hand h of a user that grasps the circular annular training equipment 1. Accordingly, in performing the training where the user rotates his/her wrist, a centrifugal force can be efficiently used and, further, a load of training can be easily adjusted by adjusting an amount of fluid body to be charged into the internal space 9. Further, the circular annular training equipment 1 can be used in place of a dumbbell.

Further, by leaving a suitable space in the internal space 9 of the outer peripheral portion 2 without charging a fluid body into the entire internal space 9, the user can receive a suitable load also at the time of performing a reverse rotating operation while feeling a motion of the fluid body in the internal space 9 generated by a centrifugal force, by rotating the circular annular training equipment about his/her wrist.

Further, in the outer peripheral portion 2, the back-and-forth communication portion 12 that is an opening formed by narrowing a cross-sectional opening of the internal space 9 is formed, and the buffer portion 10 where a fluid body can move inside the outer peripheral portion 2 through the back-and-forth communication portion 12 is formed. With such a configuration, by leaving a suitable space in the internal space 9 of the outer peripheral portion 2 without charging a fluid body into the entire internal space 9, a fluid body that passes through the back-and-forth communication portion 12 when the circular annular training equipment is rotated about his/her wrist becomes a resistance that differs depending on a rotational speed of the circular annular training equipment or an amount of charged fluid body and hence, the circular annular training equipment can give a complicated load to the user.

Further, in the outer peripheral portion 2, the partition portions 15 that close the charged fluid body 16 such that the charged fluid is not movable in the outer peripheral portion 2 are formed in the internal space 9. Accordingly, by leaving a suitable space in the internal space 9 of the outer peripheral portion 2 without charging a fluid body into the entire internal space 9, when the circular annular training equipment is rotated about the wrist of the user, the fluid body can be moved in the internal space 9 using the partition portions 15 as base points. Further, also including the reverse rotation operation time, the circular annular training equipment can give a novel load to the user by impingement of the fluid body to the partition portions 15.

Further, in the outer peripheral portion 2, the partition portions 15 to which both ends of the grip portion 17 are continuously connected are formed at portions of the outer peripheral portion 2 respectively, and a plurality of buffer portions 10 are formed. Accordingly, by leaving a suitable space in the internal space 9 of the outer peripheral portion 2 without charging a fluid body into the entire internal space 9, at the time of rotating the circular annular training equipment about his/her wrist, the fluid body in an upper half portion of the outer peripheral portion 2 and the fluid body in a lower half portion of the outer peripheral portion 2 move independently from each other. As a result, the circular annular training equipment can give a complicated load to the user.

Further, in the buffer portion 10, the left-right-separation portion 13 having a columnar shape that forms the back-and-forth communication portions 12 on both left and right side thereof is formed in the front-and-rear direction of the outer peripheral portion 2, that is, in the direction perpendicular to the axis direction of the grip portion 17. Accordingly, by leaving a suitable space in the internal space 9 of the outer peripheral portion 2 without charging a fluid body into the entire internal space 9, with respect to a fluid body that passes through the back-and-forth communication portion 12 when the user rotates his/her wrist, the user can perform training by adjusting and amusing himself/herself by feeling the movement of the fluid body where which side of the left-and-right separation portion the fluid body is to be moved is determined based on inclination and a rotational speed of the circular annular training equipment 1 about his/her wrist and an amount of charged fluid body.

Although the circular annular training equipment 1 according to the preferred embodiments of the present invention has been described heretofore, the present invention is not limited to specific embodiments, and various modifications and alterations are conceivable.

REFERENCE SIGNS LIST

• • 1: circular annular training equipment
  • 2: outer peripheral portion
  • 5: charging portion
  • 9: internal space
  • 10: buffer portion
  • 11: buffer plate
  • 12: back-and-forth communication portion
  • 13: left-and-right separation portion
  • 15: partition portion
  • 17: grip portion