CHAIR

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Application No. 202411895901.1, entitled “CHAIR” and filed on Dec. 20, 2024, which is incorporated herein by reference in its entirety.”

TECHNICAL FIELD

The present disclosure relates to chairs, in particular to a chair provided with a folding mechanism.

BACKGROUND

A chair is an indispensable auxiliary product in modern families. At present, children's chairs on the market are mainly composed of a seat and supporting legs; however, these chairs have some technical challenges while meeting basic usage needs.

To improve portability and storage efficiency of children's chairs, most products adopt foldable supporting legs, which allows a user to fold the chair when not in use, thereby saving space. However, existing children's chairs have obvious deficiencies in the folding function. Specifically, a first supporting leg set and a second supporting leg set cannot achieve synchronous movement during folding, which not only makes a folding process difficult to control but also increases the complexity of operation, bringing inconvenience to the user.

In addition, the supporting legs of the children's chair may be disassembled, so that the seat may be used alone as a booster seat placed on an adult seat. To safely store the webbing for fixing, a bottom of the seat is usually equipped with a webbing storage space. In order to prevent the webbing from being accidentally exposed during a normal use of the children's chair, which may lead to potential safety hazards such as neck strangulation of children, it is necessary to provide an anti-misuse structure to ensure safety. However, existing anti-misuse structures are generally composed of multiple parts with a single function, which not only increases the complexity of the overall structure but also raises the production cost.

SUMMARY

To solve the above problem, the present disclosure provides an improved chair, including:

• • a seat;
  • supporting leg sets capable of being supported on a supporting surface, the supporting leg set including a first supporting leg set and a second supporting leg set, the first supporting leg set and the second supporting leg set both being pivotally connected to the seat and being capable of switching between a leg unfolded position and a leg folded position; and
  • a folding mechanism, including:
  • a first driving member movably disposed on the seat and connected to the first supporting leg set, in which pivoting of the first supporting leg set relative to the seat drives the first driving member to slide relative to the seat;
  • a second driving member movably disposed on the seat and connected to the second supporting leg set, in which pivoting of the second supporting leg set relative to the seat drives the second driving member to slide relative to the seat; and
  • a guiding member movably disposed on the seat and linked with the first driving member and the second driving member for guiding the first driving member and the second driving member to move close to or away from each other, thereby driving the first supporting leg set and the second supporting leg set to be folded or unfolded synchronously.

In an embodiment, the first supporting leg set is pivotally connected to the seat at a first height relative to the supporting surface, the first driving member is connected to the first supporting leg set at a second height relative to the supporting surface, and the first height is greater than the second height, so that the pivoting of the first supporting leg set relative to the seat drives the first driving member to slide relative to the seat; and/or

• • the second supporting leg set is pivotally connected to the seat at a third height relative to the supporting surface, the second driving member is connected to the second supporting leg set at a fourth height relative to the supporting surface, and the third height is greater than the fourth height, so that the pivoting of the second supporting leg set relative to the seat drives the second driving member to slide relative to the seat.

In an embodiment, the first driving member is provided with a first rack, the second driving member is provided with a second rack, the guiding member is a gear rotatably connected to the seat, and the gear is meshed with the first rack and the second rack.

In an embodiment, the gear is rotatably connected to the seat through a rotating shaft, the first rack is provided with a long groove extending in a first direction, the rotating shaft passes through the long groove, and cooperation between the rotating shaft and the long groove guides the first driving member to slide relative to the seat.

In an embodiment, the first driving member is provided with a sliding part, the second driving member is provided with a guide rail cooperated with the sliding part, and the sliding part is slidably engaged with the guide rail, so that the second rack is slidably mounted on the first rack.

In an embodiment, both the first engaging rod and the second engaging rod are configured in an arc shape.

The present disclosure further provides a chair, including:

• • a seat;
  • supporting leg sets capable of being supported on a supporting surface, the supporting leg sets including a first supporting leg set, the first supporting leg set being pivotally connected to the seat and being capable of switching between a leg unfolded position and a leg folded position relative to the seat;
  • a first driving member movably disposed on the seat, connected to the first supporting leg set and extending along a first direction, the first direction being parallel to the supporting surface, in which pivoting of the first supporting leg set relative to the seat drives the first driving member to slide relative to the seat; and
  • a locking mechanism slidably disposed at a bottom of the seat along a second direction and located outside the first driving member in the second direction, the second direction being parallel to the supporting surface and different from the first direction, in which sliding of the locking mechanism relative to the seat locks or unlocks sliding of the first driving member relative to the seat.

In an embodiment, a storage space is defined between the locking mechanism and the seat, the first driving member has an operating position and a non-operating position relative to the seat, the locking mechanism is capable of holding the first driving member in the operating position, when the first driving member is in the operating position, the locking mechanism is capable of sliding relative to the seat to open the storage space; and when the first driving member is in the non-operating position, the locking mechanism is not capable of sliding relative to the seat as to open the storage space.

In an embodiment, the first driving member is provided with a first driving groove, and the first supporting leg set is adapted to be engaged with the first driving groove, so that the pivoting of the first supporting leg set relative to the seat drives the first driving member to slide relative to the seat.

In an embodiment, the first driving groove extends along the second direction, the first supporting leg set includes two first supporting legs and a first engaging rod connected between the two first supporting legs, and the first engaging rod is adapted to be engaged with the first driving groove.

In an embodiment, the locking mechanism includes a body part and a locking part, the locking part protrudes from the body part toward the first driving member, when the first driving groove is in the operating position, the locking part is capable of being engaged with a wall part of the first driving groove to hold the first driving member in the operating position, and when the first driving member is in the operating position and the storage space is opened, the locking part at least partially blocks the first driving groove.

In an embodiment, the wall part of the first driving groove forms an edge rib, the locking part is provided with an engaging recess, and the engaging recess is adapted to be engaged with the edge rib and slide along the edge rib, so that the body part is capable of sliding relative to the seat to open or close the storage space.

In an embodiment, the first driving member has a folded position relative to the seat and is provided with a blocking part, and the locking part is adapted to be engaged between the first blocking part and the edge rib to hold the first driving member in the folded position.

In an embodiment, the seat is provided with a blocking rib extending along the first direction, when the first driving member moves to the unfolded position, the first driving groove is at least partially blocked by the blocking rib, so that the first supporting leg set may not be detached from or installed on the seat, and when the first driving member moves to the folded position, the first driving groove is exposed from the blocking rib, so that the first supporting leg set may be detached from or installed on the seat.

In an embodiment, the locking mechanism includes a body part and a locking part, the locking part protrudes from the body part toward the first driving member, the first driving member has a folded position relative to the seat and is provided with a blocking part, and the locking part is adapted to be engaged with the blocking part to hold the first driving member in the folded position.

In an embodiment, the locking mechanism includes a body part and a locking part, the locking part protrudes from the body part toward the first driving member, the first driving member has an unfolded position relative to the seat and is provided with an engaging part, and the locking part is adapted to be engaged with the engaging part to hold the first driving member in the unfolded position.

In an embodiment, the storage space is used for storing objects to be stored, and when the objects to be stored are not properly stored in the storage space, the objects to be stored prevent the storage space from being closed.

In an embodiment, a reset member tending to push the locking mechanism against the first driving member is disposed at the bottom of the seat.

The present disclosure further provides a chair, including:

• • a seat;
  • supporting leg sets capable of being supported on a supporting surface, the supporting leg sets including a first supporting leg set and a second supporting leg set, the first supporting leg set being pivotally connected to the seat and being capable of switching between a leg unfolded position and a leg folded position; and
  • a folding mechanism, the folding mechanism including:
  • a first driving member connected to the first supporting leg set and extending along a first direction, in which pivoting of the first supporting leg set relative to the seat drives the first driving member to slide relative to the seat; and
  • a guiding member movably disposed on the seat and linked with the first driving member for guiding the first driving member to slide relative to the seat, thereby guiding the first supporting leg set to fold or unfold relative to the seat.

In an embodiment, the first supporting leg set is pivotally connected to the seat at a first height relative to the supporting surface, the first driving member is connected to the first supporting leg set at a second height relative to the supporting surface, and the first height is greater than the second height, so that the pivoting of the first supporting leg set relative to the seat drives the first driving member to slide relative to the seat.

In an embodiment, the first driving member is provided with a first rack, the guiding member is a gear rotatably connected to the seat, and the gear is meshed with the first rack.

In an embodiment, the gear is rotatably connected to the seat through a rotating shaft, the first rack is provided with a long groove extending along the first direction, the rotating shaft passes through the long groove, and the cooperation between the rotating shaft and the long groove guides the sliding of the first driving member relative to the seat.

The aforesaid and other objectives, features, aspects and advantages of the present disclosure will become more apparent from the following detailed description of the present disclosure in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated into and constitute a part of this specification, illustrate embodiments of the present disclosure, and, together with the description, serve to explain the principles of the present disclosure. In the drawings,

FIG. 1 is a perspective view of a chair according to the present disclosure;

FIG. 2 is a perspective view of the chair in FIG. 1 with the supporting leg set removed;

FIG. 3 is a perspective view of the chair in FIG. 1 with the supporting leg set in a leg unfolded position;

FIG. 4 is a perspective view of the chair in FIG. 1 with the supporting leg set in a leg folded position;

FIG. 5 is a side cross-sectional view of the chair in FIG. 3 with the supporting leg set in the leg unfolded position, and an enlarged view clearly showing an embodiment of the folding mechanism in an unfolded position;

FIG. 6 is a side cross-sectional view of the chair in FIG. 4 with the supporting leg set in the leg folded position, and an enlarged view clearly showing an embodiment of the folding mechanism in a folded position;

FIG. 7 is a bottom view of the chair in FIG. 3, specifically showing a bottom of the seat when the supporting leg set is in the leg unfolded position;

FIG. 8 is a bottom view of the chair in FIG. 4, specifically showing a bottom of the seat when the supporting leg set is in the leg folded position;

FIG. 9 shows a bottom view of the seat with the locking mechanism in the locked position when the supporting leg set of the present disclosure is in the leg unfolded position, viewed from another angle;

FIG. 10 schematically shows a perspective view of the locking mechanism in FIG. 9;

FIG. 11 schematically shows a perspective view of the locking mechanism in FIG. 9, viewed from another angle;

FIGS. 12 to 14 show the bottom of the seat with the supporting leg set removed, in which a first driving member and a second driving member in FIG. 12 are in the folded position, and the first driving member and the second driving member in FIGS. 13 and 14 are in the operating position;

FIG. 15 shows a perspective view of the supporting leg set of the chair in FIG. 1;

FIG. 16 is a perspective view showing that the connecting base is removed from the supporting leg set in FIG. 15;

FIG. 17 is a perspective view of the seat with the backrest removed from FIG. 2;

FIG. 18 is a perspective view of the seat of FIG. 17 suitable for a higher dining table, which is equipped with a longer supporting leg set; and

FIG. 19 is a perspective view of the seat of FIG. 17 suitable for a lower dining table, which is equipped with a shorter supporting leg set.

REFERENCE NUMERALS ARE LISTED AS FOLLOWS

• • 10 chair
  • 100 seat
  • 110 storage space
  • 111 blocking rib
  • 112 frame
  • 1121 sliding groove
  • 113 connecting shaft
  • 200 supporting leg set
  • 220 first supporting leg set
  • 221 first engaging rod
  • 210 second supporting leg set
  • 211 second engaging rod
  • 230 connecting base
  • 231 connecting hole
  • 232 elastic member
  • 300 folding mechanism
  • 320 first driving member
  • 321 first rack
  • 322 first driving groove
  • 3221 edge rib
  • 324 first blocking part
  • 315 guide rail
  • 310 second driving member
  • 311 second rack
  • 312 second driving groove
  • 3121 edge rib
  • 314 second blocking part
  • 325 sliding part
  • 326 long groove
  • 327 engaging part
  • 330 guiding member
  • 331 gear
  • 332 rotating shaft
  • 400 locking mechanism
  • 420 body part
  • 4210 sliding protrusion
  • 4220 body operating part
  • 430 locking part
  • 431 second locking part
  • 432 first locking part
  • 433 engaging recess

DETAILED DESCRIPTION

Although the present disclosure is illustrated and described herein with reference to specific embodiments, the present disclosure should not be limited to the details shown. Rather, various modifications may be made to these details within the scope of equivalents of the claims and without departing from the present disclosure.

In the present disclosure, directions of “front”, “rear”, “left”, and “right” are all defined relative to a direction of the seat 100. Specifically, when a child sits in the seat 100, a direction the child faces is regarded as a front direction of the seat 100, and a direction the child faces away from is regarded as a rear direction of the seat 100. Meanwhile, a direction perpendicular to the front-rear direction on the horizontal plane is regarded as a left-right direction of the seat 100.

Direction descriptions involved herein such as “front”, “rear”, “left”, “right”, “upper”, “lower” are merely for convenience of understanding, and the present disclosure is not limited to these directions but may be adjusted according to actual conditions. Although the present application has been described with reference to preferred embodiments, the terms used are illustrative and exemplary rather than restrictive.

As shown in FIG. 1, a first embodiment of the first aspect of the present disclosure provides a chair 10. In this embodiment, the chair 10 includes a seat 100, in which a child may be seated, and supporting leg sets 200 for supporting the seat 100 on a supporting surface. Optionally, wheels may be provided at ends of the supporting legs of the supporting leg sets 200, which are in contact with the supporting surface.

In this embodiment, the supporting leg sets 200 include a first supporting leg set 220 and a second supporting leg set 210, and the first supporting leg set 220 and the second supporting leg set 210 are pivotally connected to a bottom of the seat 100, so that the chair 10 may be switched between a folded state and an unfolded state. In addition, the supporting leg sets 200 are detachably connected to the seat 100. Specifically, the first supporting leg set 220 is detachably connected to a rear side of the bottom of the seat 100, and the second supporting leg set 210 is detachably connected to a front side of the bottom of the seat 100. In this embodiment, the two rear legs (also referred to as first supporting legs) of the first supporting leg set 220 and the two front legs (also referred to as second supporting legs) of the second supporting leg set 210 are respectively detachably pivoted to the bottom of the seat 100 through connecting shafts 113 (see FIG. 7). As shown in FIG. 2, after the supporting leg sets 200 are detached, the seat 100 may be used as a booster seat directly placed on the ground or fixed on an adult chair, providing child with more diversified dining environments to realize flexible application of the seat. In this embodiment, the supporting leg sets 200 include a front supporting leg set and a rear supporting leg set that may pivot relative to the seat 100, while in other embodiments (not shown), the supporting leg sets 200 may include a left supporting leg set and a right supporting leg set that pivot relative to the seat 100, and the present disclosure is not limited thereto.

In this embodiment, optionally, the supporting leg sets 200 may be pivotally connected to the bottom of the seat 100 through the connecting shafts 113. The supporting leg sets 200 may be detachably connected to the bottom of the seat 100. The first supporting leg set 220 and the second supporting leg set 210 are detached from the seat 100 in the same manner. Taking the first supporting leg set 220 as an example, in FIGS. 15 and 16, top ends of the two rear legs of the first supporting leg set 220 are provided with two U-shaped notches, the connecting base 230 is fastened to the top ends, and both sides of the connecting base 230 cover the two U-shaped notches and are provided with through holes through which the connecting shaft 113 may pass and rotate. A connecting hole 231 is provided at a position of each of the rear legs close to the connecting base 230, and the connecting hole 231 is used for an elastic member 232, such as an elastic finger, to be disposed therein. When it is necessary to detach the rear leg, the user may press the elastic finger to separate the connecting shaft 113 from the connecting base 230, thereby realizing the detachment of the rear leg.

In this embodiment, in order to synchronously fold the first supporting leg set 220 and the second supporting leg set 210, the chair 10 is provided with a folding mechanism 300. The folding mechanism 300 is movably disposed on the seat 100 and located between the first supporting leg set 220 and the second supporting leg set 210. As one of the first supporting leg set 220 and the second supporting leg set 210 pivot relative to the seat 100, the other of the first supporting leg set 220 and the second supporting leg set 210 may be driven to pivot synchronously through the folding mechanism 300. In this embodiment, the folding mechanism 300 is disposed at the bottom of the seat 100. In other embodiments (not shown), the folding mechanism 300 may also be disposed at other portions of the seat 100, such as at the side of the seat 100, which can also realize the function of synchronously folding the first supporting leg set 220 and the second supporting leg set 210.

FIGS. 3 and 4 respectively show the supporting leg sets 200 in this embodiment in a leg unfolded position and a leg folded position. When a child needs to have a meal, the first supporting leg set 220 and the second supporting leg set 210 pivot synchronously through the folding mechanism 300 to pivot away from each other and support on the supporting surface at an angle; at this time, the supporting leg sets 200 are in the leg unfolded position, as shown in FIG. 3. When the chair 10 is not in use and needs to be stored, the first supporting leg set 220 and the second supporting leg set 210 pivot synchronously toward each other through the folding mechanism 300 to be folded; at this time, the supporting leg sets 200 are in the leg folded position, as shown in FIG. 4. It should be noted here that the folding mechanism 300 has an unfolded position and a folded position, which correspond to the leg unfolded position and the leg folded position of the supporting leg sets 200 respectively.

In this embodiment, as shown in FIGS. 5-6, the folding mechanism 300 may include a first driving member 320 linked with the first supporting leg set 220, a second driving member 310 linked with the second supporting leg set 210, and a guiding member 330 disposed between the first driving member 320 and the second driving member 310. In this embodiment, both the first driving member 320 and the second driving member 310 are movably disposed at the bottom of the seat 100, while in other embodiments (not shown), the first driving member 320 and the second driving member 310 may be movably disposed at other portions of the seat 100. The guiding member 330 is linked with the first driving member 320 and the second driving member 310 respectively, and is used to guide the first driving member 320 and the second driving member 310 to move close to or away from each other, thereby realizing synchronous pivoting of the first supporting leg set 220 and the second supporting leg set 210. In this embodiment, the first driving member 320 and the second driving member 310 both extend along the same direction (first direction). The first direction may be the front-rear direction of the seat or other suitable directions, and the present disclosure is not limited thereto.

In this embodiment, to enable the pivoting of the supporting leg sets 200 relative to the seat 100 to drive the movement of the folding mechanism 300 relative to the seat, a height of a pivotal connection position between the supporting leg sets 200 and the seat 100 is greater than a height of the connection position between the supporting leg sets 200 and the folding mechanism 300. Specifically, as shown in FIGS. 5-6, the first supporting leg set 220 is pivotally connected to the seat 100 at a first height H1, and connected to the first driving member 320 at a second height H2, where the first height H1 is greater than the second height H2, so that the pivoting of the first supporting leg set 220 relative to the seat 100 drives the first driving member 320 to slide relative to the seat 100; the second supporting leg set 210 is pivotally connected to the seat 100 at a third height H3, and connected to the second driving member 310 at a fourth height H4, where the third height H3 is greater than the fourth height H4, so that the pivoting of the second supporting leg set 210 relative to the seat 100 drives the second driving member 310 to slide relative to the seat 100. In this embodiment, both the first driving member 320 and the second driving member 310 slide relative to the seat 100 along the first direction, while in other embodiments, they may also slide relative to the seat 100 along other suitable directions, and the present disclosure is not limited thereto.

FIG. 7 is a bottom view of the chair 10 in FIG. 3, specifically showing the bottom of the seat 100 when the supporting leg sets 200 are in the leg unfolded position. FIG. 8 is a bottom view of the chair 10 in FIG. 4, specifically showing the bottom of the seat 100 when the supporting leg sets 200 are in the leg folded position.

In this embodiment, optionally, the first supporting leg set 220 includes two rear legs and a first engaging rod 221 connected between the two rear legs and extending along the left-right direction of the seat 100, and the first engaging rod 221 is close to the rear side of the bottom of the seat 100; the second supporting leg set 210 includes two front legs and a second engaging rod 211 connected between the two front legs and extending along the left-right direction of the seat 100, and the second engaging rod 211 is close to the front side of the bottom of the seat 100. Correspondingly, the first driving member 320 includes a first driving groove 322, the second driving member 310 includes a second driving groove 312, and the first driving groove 322 and the second driving groove 312 may also extend along the left-right direction. The first engaging rod 221 is adapted to be engaged with the first driving groove 322 to connect the first supporting leg set 220 with the first driving member 320 in a linked manner, so that the pivoting of the first supporting leg set 220 relative to the seat 100 drives the first driving member 320 to slide relative to the seat 100. The second engaging rod 211 is adapted to be engaged with the second driving groove 312 to connect the second supporting leg set 210 with the second driving member 310 in a linked manner, so that the pivoting of the second supporting leg set 210 relative to the seat 100 drives the second driving member 310 to slide relative to the seat 100. In other embodiments (not shown), the first engaging rod 221, the second engaging rod 211, the first driving groove 322, and the second driving groove 312 may not extend along the left-right direction of the seat 100, and it is only required that the first engaging rod 221 and the first driving groove 322 extend in the same direction, and the second engaging rod 211 and the second driving groove 312 extend in the same direction, and the present disclosure is not limited thereto.

In this embodiment, optionally, the first engaging rod 221 may be configured as an arched tubular member, having a flat middle part and two ends that extend downward and outward to connect to the two rear legs. Optionally, the first engaging rod 221 may be welded to the two rear legs. Similarly, the second engaging rod 211 may also be configured as an arched tubular member, having a flat middle part and two ends that extend downward and outward to connect to the two front legs. Optionally, the second engaging rod 211 may be welded to the two front legs. The design of such arched tubular member is beneficial to bring the folding mechanism 300 close to the bottom of the seat 100, which can not only stably support the seat 100 but also reduce the thickness of the bottom of the seat 100.

In other embodiments (not shown), the supporting leg sets 200 may not be provided with the first engaging rod 221 and the second engaging rod 211. The first supporting leg set 220 and the second supporting leg set 210 may be connected to the first driving member 320 and the second driving member 310 in other ways. For example, the first driving member 320 and the second driving member 310 are provided with coupling parts, and the coupling parts of the first driving member 320 and the second driving member 310 may be directly engaged with the legs of the first supporting leg set 220 and the second supporting leg set 210 respectively, which can also realize that the pivoting of the first supporting leg set 220 and the second supporting leg set 210 relative to the seat 100 drives the sliding of the first driving member 320 and the second driving member 310 relative to the seat 100 respectively.

In this embodiment, optionally, the bottom of the seat 100 is provided with blocking ribs 111, which are respectively disposed on the front side and the rear side of the bottom of the seat 100 and extend along an extending direction of the first driving member 320 and the second driving member 310. When the supporting leg sets 200 are in the leg unfolded position (i.e., when the folding mechanism 300 is in the unfolded position) , the blocking ribs 111 at least partially block the first driving groove 322 and the second driving groove 312, so that the blocking ribs 111 can prevent the first engaging rod 221 from being detached from the first driving groove 322 and prevent the second engaging rod 211 from being detached from the second driving groove 312, thereby preventing the first supporting leg set 220 and the second supporting leg set 210 from being detached from the seat 100 when installed on the seat 100. When the supporting leg sets 200 are in the leg folded position (i.e., when the folding mechanism 300 is in the unfolded position) , the first driving groove 322 and the second driving groove 312 are respectively exposed from the blocking ribs 111, thereby allowing the first supporting leg set 220 and the second supporting leg set 210 to be detached from the seat 100 when installed on the seat 100 or installed on the seat 100 when separated from the seat 100. The blocking ribs 111 may be integrally formed with the seat 100 and configured to protrude downward from the bottom of the seat 100 and extend inward; certainly, the blocking ribs 111 may also be fixedly connected to the seat 100. In this embodiment, two pairs of blocking ribs 111 are provided and the blocking ribs 111 are disposed at the bottom of the seat 100, but the present disclosure is not limited thereto, and the number and position of the blocking ribs 111 may also be different.

The folding mechanism 300 and working principle thereof according to the first embodiment of the present disclosure will be described in detail below with reference to FIGS. 5 to 8. FIGS. 5 and 7 show the supporting leg sets 200 in the leg unfolded position and the folding mechanism 300 in the unfolded position, and FIGS. 6 and 8 show the supporting leg sets 200 in the leg and the folding mechanism 300 in the folded position.

In this embodiment, the first driving member 320 is provided with a first rack 321, and the second driving member 310 is provided with a second rack 311. Both the second rack 311 and the first rack 321 may slide relative to the seat 100. The guiding member 330 may be configured as a gear 331 rotatably connected to the seat 100, which will be described in detail below, and the gear 331 is meshed between the first rack 321 and the second rack 311 and configured such that when one of the first rack 321 and the second rack 311 moves, the other of first rack 321 and the second rack 311 is driven to move synchronously through the gear 331. For example, when the first supporting leg set 220 pivots from the leg unfolded position toward the leg folded position relative to the seat 100, the pivoting of the first supporting leg set 220 drives the first driving member 320 and the first rack 321 to slide from the unfolded position toward the folded position, the first rack 321 drives the gear 331 to rotate, and the gear 331 drives the second rack 311 and the second driving member 310 to slide synchronously from the unfolded position toward the folded position; at this time, the second driving member 310 and the first driving member 320 slide toward each other, and finally drive the second supporting leg set 210 to pivot from the leg unfolded position toward the leg folded position relative to the seat 100, thereby realizing synchronous pivoting of the first supporting leg set 220 and the second supporting leg set 210. Similarly, the pivoting of the first supporting leg set 220 from the leg folded position toward the leg unfolded position relative to the seat 100 may drive the second supporting leg set 210 to pivot synchronously from the leg folded position toward the leg unfolded position relative to the seat 100, and at this time, the second driving member 310 and the first driving member 310 slide away from each other. Similarly, the pivoting of the second supporting leg set 210 relative to the seat 100 may drive the first supporting leg set 220 to pivot synchronously relative to the seat 100.

Optionally, sliding parts 325 are disposed on both sides of the first rack 321, and guide rails 315 cooperated with the sliding parts 325 are disposed on both sides of the second rack 311, and the sliding parts 325 are slidably engaged with the guide rails 315, so that the second rack 311 is slidably mounted on the first rack 321.

In this embodiment, optionally, the chair 10 further includes two locking mechanisms 400 disposed on both sides in the left-right direction, which will be described in detail below, and the two locking mechanisms 400 may slide in the left-right direction at the bottom of the seat 100 to lock or unlock the folding mechanism 300, so that when the locking mechanism 400 is in the locked position, the first driving member 320 and the second driving member 310 in the folding mechanism 300 are not allowed to move relative to each other, thereby preventing the supporting leg sets 200 from pivoting and keeping it in the leg unfolded position; when the locking mechanism 400 is in the unlocked position, the first driving member 320 and the second driving member 310 in the folding mechanism 300 are allowed to move relative to each other, thereby enabling the supporting leg sets 200 to pivot.

As shown in FIG. 7, when the locking mechanism 400 is in the locked position, the first rack 321 and the second rack 311 of the folding mechanism 300 are away from each other, the first engaging rod 221 accommodated in the first driving groove 322 is blocked by the blocking rib 111 on the front side of the bottom of the seat 100, and the second engaging rod 211 accommodated in the second driving groove 312 is blocked by the blocking rib 111 on the rear side of the bottom of the seat 100; at this time, the supporting leg sets 200 are not allowed to be detached from the seat 100.

As shown in FIG. 8, when the locking mechanism 400 is in the unlocked position, the first rack 321 and the second rack 311 of the folding mechanism 300 are close to each other, the first engaging rod 221 accommodated in the first driving groove 322 may be separated from the blocking rib 111 on the front side of the bottom of the seat 100, and the second engaging rod 211 accommodated in the second driving groove 312 may be separated from the blocking rib 111 on the rear side of the bottom of the seat 100; at this time, the supporting leg sets 200 are allowed to be detached from the seat 100.

In this embodiment, optionally, the first driving member 320 is provided with a long groove 326 extending along the extending direction of the first rack 321 (as shown in FIGS. 5 and 6), the long groove 326 is rotatably connected to the seat 100, and the rotating shaft 332 of the gear 331 passes through and slides along the long groove 326. The gear 331 may be meshed with the first rack 321 located below it and the second rack 311 located above it simultaneously.

When the supporting leg sets 200 are to be unfolded to make the chair 10 in use, the user pulls one of the legs outward to drive one of the first driving member 320 and the second driving member 310 to slide outward, and under the guidance of the gear 331, the other of the first rack 321 and the second rack 311 is driven to slide outward, that is, the first driving member 320 and the second driving member 310 move away from each other until the gear 331 slides to a leftmost end of the long groove 326 (as shown in FIG. 7), and the supporting leg set is in the leg unfolded position. When the supporting leg sets 200 are to be folded to make the chair 10 folded, the user pushes one of the legs inward to drive one of the first driving member 320 and the second driving member 310 to slide inward, and under the guidance of the gear 331, the other of the first rack 321 and the second rack 311 is driven to slide inward, that is, the first driving member 320 and the second driving member 310 move close to each other until the gear 331 slides to a rightmost end of the long groove 326 (as shown in FIG. 8), and the supporting leg set is in the leg folded position.

As shown, a length of the long groove 326 is less than a length of the rack part of the second rack 311, thereby limiting a sliding range of the gear 331, and therefore, the relative movement between the first rack 321 and the second rack 311 is also limited accordingly.

It can be understood that the folding mechanism 300 of the present disclosure may also adopt other embodiments to realize the linkage with the supporting leg sets 200. For example, the first driving member 320 and the second driving member 310 are connected through a connecting rod, and the connecting rod may serve to slide the first driving member 320 relative to the seat 100 to drive the sliding of the second driving member 310 relative to the seat 100, and the present disclosure is not limited thereto.

As described above, the present disclosure realizes the synchronous operation of the first supporting leg set 220 and the second supporting leg set 210 through mutual linkage of the first driving member 320, the second driving member 310 and the guiding member 330 of the folding mechanism 300, thereby making the folding and unfolding of the chair 10 simple and fast.

In this embodiment, optionally, the seat 100 also has various usage modes. As shown in FIG. 17, a backrest of the seat 100 of the present disclosure is detachable, so that the seat 100 can adapt to a variety of different usage scenarios.

FIGS. 18 and 19 respectively show the seat 100 provided with supporting leg sets 200 of different lengths. In the embodiment of FIG. 18, for example, when a child needs to have a meal with family at a dining table, the user can remove the tray and backrest of the chair 100 and install longer supporting leg sets 200 to match the height of the higher dining table. In the embodiment of FIG. 19, for example, when a child has a meal at a lower dining table, the user can install shorter supporting leg sets 200 on the seat 100 to match the height of the lower dining table. This adjustable supporting leg design greatly expands the application range of the chair 10 of the present disclosure, enabling it to adapt to different dining environments and needs.

In this embodiment, optionally, the chair 10 may further include a locking mechanism 400, which is used to lock the folding mechanism 300 (i.e., the first driving member 320 and the second driving member 310) at a specific position relative to the seat. The specific structure of the locking mechanism 400 and its cooperation with the folding mechanism 300 are the same as those of the embodiment according to a second aspect of the present disclosure, which will be described in detail below.

A second embodiment of the first aspect of the present disclosure provides a chair 10. In this embodiment, the chair 10 includes a seat 100 in which a child may sit, and a supporting leg sets 200 for supporting the seat 100 on a supporting surface, and the supporting leg sets 200 are detachably connected to the seat 100. The supporting leg sets 200 include a first supporting leg set 220 and a second supporting leg set 210, and the first supporting leg set 220 is pivotally connected to a bottom of the seat 100, so that the chair 10 may be switched between a folded state and an unfolded state. In this embodiment, the second supporting leg set 210 is fixedly or pivotally connected to the bottom of the seat 100.

In this embodiment, to realize more stable pivotal folding of the first supporting leg set 220 relative to the seat 100, the chair 10 is provided with a folding mechanism 300. The folding mechanism 300 is movably disposed on the seat 100 and linked with the first supporting leg set 220. Specifically, the folding mechanism 300 includes a first driving member 320 and a guiding member 330. The first driving member 320 extends along a first direction and is movably disposed at the bottom of the seat 100. The first direction may be a front-rear direction of the seat 100 or other suitable directions, and the present disclosure is not limited thereto. The first driving member 320 is linked with the first supporting leg set 220, so that the pivoting of the first supporting leg set 220 relative to the seat 100 drives the sliding of the first driving member 320 relative to the seat 100.

In this embodiment, to enable the pivoting of the supporting leg sets 200 relative to the seat 100 to drive the movement of the folding mechanism 300 relative to the seat 100, a height of a pivotal connection position between the supporting leg sets 200 and the seat 100 is greater than a height of a connection position between the supporting leg sets 200 and the folding mechanism 300. Specifically, the first supporting leg set 220 is pivotally connected to the seat 100 at a first height H1, and connected to the first driving member 320 at a second height H2, where the first height H1 is greater than the second height H2, so that the pivoting of the first supporting leg set 220 relative to the seat 100 drives the sliding of the first driving member 320 relative to the seat 100. In this embodiment, the first driving member 320 slides relative to the seat 100 along the first direction, while in other embodiments, the first driving member 320 may also slide relative to the seat 100 along other suitable directions, and the present disclosure is not limited thereto.

In this embodiment, specifically, the first supporting leg set 220 includes two rear legs and a first engaging rod 221 connected between the two rear legs and extending along the left-right direction of the seat 100, and the first engaging rod 221 is close to the rear side of the bottom of the seat 100. Correspondingly, the first driving member 320 includes a first driving groove 322, and the first driving groove 322 may also extend along the left-right direction. The first engaging rod 221 is adapted to be engaged with the first driving groove 322 to connect the first supporting leg set 220 with the first driving member 320 in a linked manner, so that the pivoting of the first supporting leg set 220 relative to the seat 100 drives the sliding of the first driving member 320 relative to the seat 100. In other embodiments (not shown), the first engaging rod 221 and the first driving groove 322 may not extend along the left-right direction of the seat 100, and it is only required that the first engaging rod 221 and the first driving groove 322 extend in the same direction, and the present disclosure is not limited thereto.

In other embodiments (not shown), the first supporting leg set 220 is not provided with the first engaging rod 221, and the first supporting leg set 220 may be connected to the first driving member 320 in other ways. For example, the first driving member 320 is provided with a coupling part, and the coupling part of the first driving member 320 may be directly engaged with the legs of the first supporting leg set 220, which can also realize that the pivoting of the first supporting leg set 220 relative to the seat 100 drives the sliding of the first driving member 320 relative to the seat 100.

In this embodiment, the first driving member 320 may also be provided with a first rack 321, and the gear 331 is rotatably connected to the seat 100 and meshed with the first rack 321.

In this embodiment, optionally, the first driving member 320 is provided with a long groove 326 extending along an extending direction of the second rack 311, the gear 331 is rotatably connected to the seat 100 through a rotating shaft 332 passing through the long groove 326, and the rotating shaft 332 of the gear 331 passes through and slides along the long groove 326.

In this embodiment, optionally, the chair 10 may further include a locking mechanism 400, which is used to lock the first driving member 320 at a specific position relative to the seat 100. The specific structure of the locking mechanism 400 and its cooperation with the folding mechanism 300 are the same as those of the embodiment according to the second aspect of the present disclosure, which will be described in detail below.

A first embodiment according to the second aspect of the present disclosure provides a chair 10. This embodiment is basically the same as the first embodiment according to the first aspect of the present disclosure, except that this embodiment further includes a locking mechanism 400. The locking mechanism 400 may cooperate with the folding mechanism 300 to hold the supporting leg sets 200 at a specific position relative to the seat 100.

In this embodiment, the locking mechanism 400 is movably disposed at the bottom of the seat 100 along a second direction, and is located outside the folding mechanism 300 in the second direction. The second direction may be the left-right direction of the seat 100 or other suitable directions, and the present disclosure is not limited thereto. The locking mechanism 400 is adapted to cooperate with the folding mechanism 300 and may hold the folding mechanism 300 at a specific position. The sliding of the locking mechanism 400 relative to the seat 100 along the second direction can lock or unlock the sliding of the folding mechanism 300 relative to the seat 100. For example, the locking mechanism 400 can lock the folding mechanism 300 in the unfolded position, and sliding the locking mechanism 400 to one side along the second direction (for example, sliding to the left side of the seat 100) can unlock the folding mechanism 300, so that the folding mechanism 300 slides to, for example, the folded position. At this time, sliding the locking mechanism 400 to the other side along the second direction (for example, sliding to the right side of the seat 100) can lock the folding mechanism 300 in the folded position again.

In this embodiment, the locking mechanism 400 may slide at the bottom of the seat 100 and form a storage space 110 with the bottom of the seat 100 (as shown in FIG. 14), and the storage space 110 is disposed on both sides of the folding mechanism 300 along a width direction (i.e., a left-right direction) of the seat 100. The locking mechanism 400 may slide relative to the seat 100 to at least partially open or expose the storage space. In this embodiment, the storage space 110 is used to store a webbing (not shown) for fixing the seat 100, but the present disclosure is not limited thereto. The storage space 110 may be used to store other accessories, such as maintenance parts, as needed. The storage space 110 may be opened or closed by sliding the locking mechanism 400 in the second direction. In addition to the folded position and unfolded position corresponding to the seat 100, the first driving member 320 and the second driving member 310 also have an operating position (as shown in FIGS. 13 and 14) and a non-operating position. At the operating position of the first driving member 320 and the second driving member 310, the locking mechanism 400 may slide in the second direction to open or close the storage space 110. For example, in FIG. 13, the storage space is in a closed state, and the storage space 110 may be opened after operating the locking mechanism 400 to slide, as shown in FIG. 14. At the non-operating position of the first driving member 320 and the second driving member 310, the storage space 110 may not be opened or closed by operating the locking mechanism 400, that is, the locking mechanism 400 may not slide along the second direction as to open or close the storage space 110. It should be understood that “the locking mechanism 400 may not slide along the second direction as to open or close the storage space 110” includes at least one of the following situations: the locking mechanism 400 may be able to slide but cannot slide to a position where the storage space 110 is allowed to be opened or closed; and the locking mechanism 400 cannot slide at all.

In this embodiment, specifically, a connection mode between the folding mechanism 300 and the supporting leg sets 200 are similar to that of the first embodiment according to the first aspect of the present disclosure. That is, the shape and size of the first driving groove 322 are matched with those of the first engaging rod 221, and the shape and size of the second driving groove 312 are matched with those of the second engaging rod 211. The linkage between the first driving member 320 and the first supporting leg set 220 is realized through the cooperation of the first driving groove 322 and the first engaging rod 221, and the linkage between the second driving member 310 and the second supporting leg set 210 is realized through the cooperation of the second driving groove 312 and the second engaging rod 211.

In this embodiment, two locking mechanisms 400 are symmetrically disposed on both sides of the folding mechanism 300 in the left-right direction of the seat 100. The locking mechanisms 400 may be slidably disposed at the bottom of the seat 100. Each locking mechanism 400 includes a body part 420 and a locking part 430, and the locking part 430 extends from the body part 420 toward the folding mechanism 300 for locking or unlocking the folding mechanism 300. When the folding mechanism 300 is in the operating position, the locking part 430 may be engaged with wall parts of the first driving groove 322 and the second driving groove 312 to hold the first driving member 320 and the second driving member 310 in the operating position. In this embodiment, when the first driving member 320 is in the operating position, the locking part 430 is engaged with the wall parts of the first driving groove 322 and the second driving groove 312 and at least partially blocks the first driving groove 322 and the second driving groove 312, so that the first engaging rod 221 of the first supporting leg set 220 and the second engaging rod 211 of the second supporting leg set 210 cannot be engaged into the first driving groove 322 and the second driving groove 312 respectively, thereby making it impossible to install the first supporting leg set 220 and the second supporting leg set 210 on the seat 100 simultaneously, which plays a role in preventing mis-operation. Therefore, when the first driving member 320 and the second driving member 310 are in the operating position, the supporting leg sets 200 cannot be installed on the seat 100, which prevents a risk that the safety webbing hanging under the seat 100 may entangle the child by installing the supporting leg sets 200 on the seat 100 without storing the safety webbing in the storage space 110, or prevents a risk of loss of an object to be stored by installing the supporting leg sets 200 on the seat 100 without storing the object to be stored in the storage space 110.

Further, optionally, when the first driving member 320 and the second driving member 310 are in the operating position, if the safety webbing is not completely stored in the storage space 110, the safety webbing may block the storage space 110 from being closed, thereby blocking the first driving member 320 and the second driving member 310 from moving from the operating position to the folded position. Since the supporting leg sets 200 may only be installed on the seat 100 when the folding mechanism 300 is in the folded position, misuse can be further prevented. Optionally, other objects to be stored can also block the storage space 110 from being closed when they are not completely stored in the storage space 110.

In other embodiments (not shown), two locking mechanisms 400 are symmetrically disposed on both sides of the folding mechanism 300 in the left-right direction of the seat 100, and each locking mechanism 400 includes a body part 420 and a locking part 430. The locking part 430 located on one side of the seat 100 in the left-right direction is configured to be engaged with the wall part of the first driving groove 322, and the locking part located on the other side of the seat 100 in the left-right direction is configured to be engaged with the wall part of the second driving groove 312, which can also realize the above-mentioned function of preventing mis-operation.

FIG. 10 schematically shows a top perspective view of the locking mechanism 400. In this embodiment, each locking part 430 has a first locking part 432 and a second locking part 431 extending from the body part 420. As the locking mechanism 400 moves relative to the folding mechanism 300, a distance between the body part 420 and the folding mechanism 300 changes. It can be understood that in other embodiments, each locking part 430 may only include a first locking part 432, and the two first locking parts 432 located on both sides of the seat 100 in the left-right direction cooperate with the first driving groove 322 and the second driving groove 312 respectively to play a role in preventing misuse.

In this embodiment, further, FIG. 11 schematically shows a bottom perspective view of the locking mechanism 400. One surface of the locking part 430 is provided with an engaging recess 433, which is used to cooperate with an edge rib 3221 of the first driving groove 322 on the first driving member 320 and an edge rib 3121 of the second driving groove 312 on the second driving member 310. When the folding mechanism 300 is in the operating position, the engaging recesses 433 are respectively engaged with corresponding edge ribs 3121 and 3221 to hold the folding mechanism 300 in the operating position. At the same time, the locking part 430 may slide along the edge ribs 3221 and 3121 through the engaging recess 433, such that the locking mechanism 400 is allowed to slide along the second direction to open or close the storage space 110.

In this embodiment, optionally, the folding mechanism 300 further includes an unfolded position, and the locking mechanism 400 may hold the driving structure 300 in this unfolded position. Taking the first driving member 320 as an example, the first driving member 320 is provided with an engaging part 327, which is arranged at a position of the first driving member 320 close to the inner side relative to the first driving groove 322 and configured as a recess. The engaging part 327 is shape-adapted to the locking part 430 and configured to be snap-fitted with the locking part 430 to hold the first driving member 320 in the unfolded position, and at this time, the supporting leg sets 200 are also held in the leg unfolded position. Correspondingly, the second driving member 310 may also be provided with a similar engaging part, which cooperates with the locking part 430 to hold the second driving member 310 in the unfolded position. It can be understood that the engaging part 327 may also be in other forms as long as it can be engaged with the locking part 430.

In this embodiment, optionally, the folding mechanism 300 further includes a folded position, and the locking mechanism 400 may hold the folding mechanism 300 in this folded position. Taking the first driving member 320 as an example, the first driving member 320 is provided with a first blocking part 324 at a position close to the edge rib 3221 of the first driving groove 322, and the locking part 430 may be stopped and engaged between the first blocking part 324 and the edge rib 3221 to hold the first driving member 320 in the folded position. Correspondingly, the second driving member 310 may also be provided with a similar blocking part, which cooperates with the locking part 430 to hold the second driving member 310 in the folded position. It can be understood that the first blocking part 324 may also be in other forms as long as it can be engaged with the locking part 430. For example, the first blocking part 324 may be independently engaged with the locking part 430, such as the first blocking part 324 being a recess formed on the first driving member and the second driving member to cooperate with the locking part 430.

In this embodiment, optionally, the bottom of the seat 100 is provided with a reset member (not shown), which tends to push the locking mechanism 400 against the folding mechanism 300. Optionally, the reset member may be a compression spring, but the present disclosure is not limited thereto. Taking the first driving member 320 as an example, when the first driving member 320 is in the unfolded position, the reset member tends to engage the locking part 430 with the engaging part 327 of the first driving member 320 to hold the first driving member 320 in the unfolded position; when the first driving member 320 is in the folded position, the reset member tends to engage the locking part 430 with the first blocking part 324 of the first driving member 320 and the edge rib 3221 of the first driving groove 322 to hold the first driving member 320 in the folded position; and when the first driving member 320 is in the operating position, the reset member tends to make the locking mechanism 400 slide along the edge rib 3221 of the first driving groove 322 to open the storage space 110.

In this embodiment, similar to the first embodiment according to the first aspect of the present disclosure, the seat 100 is optionally provided with blocking ribs 111, which are arranged on the front side and the rear side of the seat 100 and extend along the extending direction of the first driving member 320 and the second driving member 310. When the folding mechanism 300 is in the unfolded position, the blocking ribs 111 at least partially block the first driving groove 322 and the second driving groove 312, so that the blocking ribs 111 can prevent the first engaging rod 221 from being detached from the first driving groove 322 and prevent the second engaging rod 211 from being detached from the second driving groove 312, thereby preventing the first supporting leg set 220 and the second supporting leg set 210 from being detached from the seat 100 when installed on the seat 100; when the folding mechanism 300 is in the folded position, the first driving groove 322 and the second driving groove 312 are respectively exposed from the blocking ribs 111, thereby allowing the first supporting leg set 220 and the second supporting leg set 210 to be detached from the seat 100 when installed on the seat 100 or installed on the seat 100 when separated from the seat 100.

In this embodiment, in a moving direction of the first driving member 320 and the second driving member 310 from the unfolded position toward the folded position, they may sequentially pass through the unfolded position, the folded position and the operating position. With respect to the folded position, the first driving member 320 and the second driving member 310 in the operating position are further close to each other. Therefore, when the first driving member 320 and the second driving member 310 are in the operating position, the first driving groove 322 and the second driving groove 312 are further exposed from the blocking ribs 111 respectively, but will be at least partially blocked by the locking part 430 of the locking mechanism 400, and the supporting leg sets 200 still cannot be installed on the seat 100.

In this embodiment, due to the arrangement of the blocking ribs 111, the first supporting leg set 220 and the second supporting leg set 210 can only be installed on the seat 100 at the folded position of the first driving member 320 and the second driving member 310, which can further enhance the anti-misuse function.

In this embodiment, optionally, the bottom of the seat 100 is further provided with a frame 112 adapted to the locking mechanism 400, the frame 112 is provided with a sliding groove 1121, and the body part 420 is further provided with a sliding protrusion 4210. By sliding the sliding protrusion 4210 in the sliding groove 1121, the locking mechanism 400 is slidably connected to the seat 100. Optionally, as shown in FIG. 10, the sliding protrusions 4210 may be disposed on both sides of the body part 420 along the left-right direction of the seat 100, pass through the sliding grooves 1121 on the opposite sides of the frame 112, and can slide in the sliding grooves 1121.

In this embodiment, optionally, the body part 420 is provided with a body operating part 4220 for the user to grasp and pull the locking mechanism 400 outward, so that the locking part 430 is disengaged from the folding mechanism 300, allowing the folding mechanism 300 to switch from the locked position to the folded position.

In this embodiment, the locking mechanism 400 may have a locked position, an unlocked position and an exposed position.

When the locking mechanism 400 is in the locked position, the locking part 430 of the locking mechanism 400 locks the folding mechanism 300 and covers the storage space 110. At this time, the folding mechanism 300 may be in the unfolded position or the folded position and cannot slide along the first direction. When the locking mechanism 400 moves to the unlocked position along the second direction, the locking part 430 of the locking mechanism 400 unlocks the folding mechanism 300 and covers the storage space 110, and at this time, the folding mechanism 300 can slide along the first direction. When the folding mechanism 300 moves to the operating position, the locking mechanism 400 can move to the exposed position along the second direction to open the storage space 110.

Referring to FIG. 9, the folding mechanism 300 is in the unfolded position and the locking mechanism 400 is in the locked position. The first locking part 432 is snap-fitted with the engaging part 327 to hold the supporting leg sets 200 in the leg unfolded position. The first engaging rod 221 is held in the first driving groove 322 and blocked by the blocking rib 111, and the second engaging rod 211 is held in the second driving groove 312 and blocked by the blocking rib 111, so that the chair 10 is in the unfolded state.

To switch the chair 10 from the unfolded state to the folded state, the user pulls the body operating part 4220 at the bottom of the seat 100 outward to disengage the second locking part 431 from the engaging part 327, so that the locking mechanism 400 is in the unlocked state. Then the user pushes the supporting leg sets 200 inward to move the folding mechanism 300 from the unfolded position to the folded position, so that the chair 10 is in the folded state. At this time, the movement of the folding mechanism 300 allows the first driving groove 322 and the second driving groove 312 to be disengaged from the blocking ribs 111. When the folding mechanism 300 is in the folded position, the user can detach the supporting leg sets 200 from the seat 100. The detached seat 100 can be used alone, especially on a high chair.

Hereinafter, a process of the folding mechanism 300 moving from the non-operating position to the operating position will be described in detail with reference to FIGS. 12-14.

As shown in FIG. 12, especially an enlarged view of part C, when the locking mechanism 400 is in the unlocked position, the first locking part 432 is limited between the first blocking part 324 and the edge rib 3221 of the first driving groove 322, and the second locking part 431 is abutted between the second blocking part 314 and the edge rib 3121 of the second driving groove 312 and limited therebetween. After the first engaging rod 221 is removed from the first driving groove 322 and the second engaging rod 211 is removed from the second driving groove 312, the user continues to pull the body operating part 4220 outward to allow the first driving member 320 and the second driving member 310 to move close to each other, until the engaging recess 433 of the first driving member 320 is engaged with the edge rib 3221 of the first driving groove 322 and the engaging recess 433 of the second driving member 310 is engaged with the edge rib 3121 of the second driving groove 312, as shown in FIG. 13. Both locking mechanisms 400 slide toward the folding mechanism 300 under the action of the reset member, until the two first locking parts 432 sliding relative to each other come to contact and the two second locking parts 431 sliding relative to each other come to contact, as shown in FIG. 14, and the storage space 110 is exposed.

As described above, a distance between the body part 420 and the folding mechanism 300 when the locking mechanism 400 is in the locked position is smaller than a distance between the body part 420 and the folding mechanism 300 when the locking mechanism 400 is in the unlocked position, and is larger than a distance between the body part 420 and the folding mechanism 300 when the locking mechanism 400 is in the exposed position.

In this embodiment, the chair 10 of the present disclosure may be a child's dining chair and has different usage modes. When the supporting leg sets 200 are detached and the seat 100 is fixed on an adult chair for use, it is necessary to expose the storage space 110 at the bottom of the seat 100, so that the user can take the webbing out of the storage space 110 and thereby fix the seat 100 on the adult chair through the webbing so as to ensure that the seat 100 is stably and fixedly matched with the adult chair. Optionally, a rear webbing and a lower webbing are provided. The rear webbing may include left and right webbings, one end of each webbing is fixed to the bottom of the seat 100, and the other ends of the two webbings are connected with a male buckle and a female buckle respectively. When the seat 100 needs to be fixed, the user wraps the two webbings of the rear webbing from the front of the backrest of the adult chair to the rear of the backrest and fastens them; similarly, wraps the two webbings of the lower webbing is wrapped from the seat of the adult chair to below the seat and fastened. When the supporting leg sets 200 need to be assembled on the seat 100, the safety webbing needs to be completely stored in the storage space, then the first driving member 320 and the second driving member 310 are moved to the folded position, and then the first engaging rod 221 and the second engaging rod 211 of the supporting leg sets 200 are respectively engaged with the first driving groove 322 and the second driving groove 312.

The locking mechanism 400 of the present disclosure not only has the function of locking or unlocking the folding mechanism 300 but also has the function of covering or exposing the storage space, which can effectively avoid misuse of the webbing. This design allows a single component with multiple functions, simplifies the structure and reduces the cost.

A second embodiment according to the second aspect of the present disclosure provides a chair 10. This embodiment is substantially the same as the first embodiment according to the second aspect, and the differences between the second embodiment and the first embodiment will be mainly described below.

In this embodiment, the chair 10 includes a seat 100 in which a child may sit, and supporting leg sets 200 for supporting the seat 100 on a supporting surface, and the supporting leg sets 200 are detachably connected to the seat 100. The supporting leg sets 200 include a first supporting leg set 220 and a second supporting leg set 210, and the first supporting leg set 220 is pivotally connected to the bottom of the seat 100, so that the chair 10 may be switched between a folded state and an unfolded state. In this embodiment, the second supporting leg set 210 is fixedly or pivotally connected to the bottom of the seat 100.

In this embodiment, the folding mechanism 300 includes a first driving member 320. The first driving member 320 extends along a first direction and is movably disposed at the bottom of the seat 100. The first direction may be a front-rear direction of the seat or other suitable directions, and the present disclosure is not limited thereto. The first driving member 320 is linked with the first supporting leg 220, so that the pivoting of the first supporting leg set 220 relative to the seat 100 drives the sliding of first driving member 320 relative to the seat 100.

In this embodiment, the first supporting leg set 220 includes two rear legs and a first engaging rod 221 connected between the two rear legs and extending along the left-right direction of the seat 100, and the first engaging rod 221 is close to the rear side of the bottom of the seat 100. Correspondingly, the first driving member 320 includes a first driving groove 322, and the first driving groove 322 may also extend along the left-right direction. The first engaging rod 221 is adapted to be engaged with the first driving groove 322 to connect the first supporting leg set 220 with the first driving member 320 in a linked manner, so that the pivoting of the first supporting leg set 220 relative to the seat 100 drives the sliding of the first driving member 320 relative to the seat 100. In other embodiments (not shown), the first engaging rod 221 and the first driving groove 322 may not extend along the left-right direction of the seat 100, and it is only required that the first engaging rod 221 and the first driving groove 322 extend in the same direction, and the present disclosure is not limited thereto.

In this embodiment, the first driving member 320 also has an unfolded position, a folded position and an operating position. The unfolded position and the folded position of the first driving member 320 correspond to the leg unfolded position and the leg folded position of the first supporting leg set 220 respectively. When the first driving member 320 is in the operating position, the locking part 430 is only engaged with the wall part of the first driving groove 322 to hold the first driving member 320 in the operating position. In this embodiment, when the first driving member 320 is in the operating position, the locking part 430 is engaged with the wall part of the first driving groove 322 and at least partially blocks the first driving groove 322, so that the first engaging rod 221 of the first supporting leg set 220 cannot be clamped into the first driving groove 322, thereby making it impossible to install the first supporting leg set 220 on the seat 100, which plays a role in preventing the mis-operation.

In this embodiment, the locking part 430 is also provided with an engaging recess 433, which is used to cooperate with the edge rib 3221 of the first driving groove 322 on the first driving member 320. When the first driving member 320 is in the operating position, the engaging recess 433 is engaged with the corresponding edge rib 3221 to hold the first driving member 320 in the operating position. At the same time, the locking part 430 can slide along the first edge rib 3221 through the engaging recess 433 to allow the locking mechanism 400 to slide along the second direction to open or close the storage space 110.

In this embodiment, the first driving member 320 also includes an engaging part 327, which is shape-adapted to the locking part 430 and configured to be snap-fitted with the locking part 430 to hold the first driving member 320 in the unfolded position, while the supporting leg sets 200 are also held in the leg unfolded position.

In this embodiment, the first driving member 320 is provided with a first blocking part 324 at a position close to the edge rib 3221 of the first driving groove 322, and the locking part 430 can be stopped and engaged between the first blocking part 324 and the edge rib 3221 to hold the first driving member 320 in the folded position.

In this embodiment, the seat 100 is optionally provided with blocking ribs 111, which are arranged on the front side and the rear side of the seat 100 and extend along the extending direction of the first driving member 320. When the folding mechanism 300 is in the unfolded position, the blocking ribs 111 at least partially block the first driving groove 322, so that the blocking ribs 111 can prevent the first engaging rod 221 from being detached from the first driving groove 322, thereby preventing the first supporting leg set 220 from being detached from the seat 100 when installed on the seat 100; when the folding mechanism 300 is in the folded position, the first driving groove 322 is respectively exposed from the blocking ribs 111, thereby allowing the first supporting leg set 220 to be detached from the seat 100 when installed on the seat 100 or installed on the seat 100 when separated from the seat 100.

Although the present disclosure has been described herein by taking the preferred embodiments as examples, those skilled in the art will be able to make more possible modifications and changes without departing from the scope of the present disclosure.