JP5372199B2 - Folding chair - Google Patents

Abstract

The invention provides a folding chair which can be folded by one hand, easily moved and consider upper surface of a seat as front side to improve integral beautifulness at the time of being vertical in a folding state. The folding chair 10 includes: a pair of front foot parts 11 at left and right, a pair of rear foot parts 12 at left and right, and a seat 13 which is used on condition that these front foot parts 11 and rear foot parts 12 takes the upper surface 13B from the bottom direction as a seat surface in a supporting state; in the seat 13, rear edge of the seat 13 is seized and lifted by regarding the rear foot parts 12 side as rear face in order to rotate the seat 13, such that the upper surface 13B of the seat 13 is changed into front side, and the front foot parts 11 and the rear foot parts 12 are forced to get close to each other for folding; the folding chair in the folding state can be vertical on its own.

Description

The present invention relates to a folding chair used when an elderly person or a disabled person takes a shower in a bathroom.

Conventionally, the folding chair as described above, for example, as shown in Patent Document 1, the rear leg is pivotally attached to the front leg part in which the backrest frame is integrated, and the rear edge of the seat part is pivotally attached to the rear leg part. In addition, a link is passed between the front portion and the middle portion of the seat portion in the front-rear direction. Then, using both hands, grasp the back frame and the front edge of the seat part, and lift the front edge of the seat part, the seat part rotates so that the lower surface of the seat part is the front side, and the seat part The folding chair is folded when the front leg portion and the rear leg portion approach each other in conjunction with the rotation.
JP 2002-191523 A

However, as described above, the conventional folding chair needs to use both hands for folding. In addition, when carrying it in a folded state, it will have a backrest frame, so it is necessary to lift it up to a sufficient height while taking care that the front legs or rear legs do not touch the floor.
The present invention has been made paying attention to such problems of the prior art, and the object of the present invention is a folding chair that can be folded with only one hand and can be easily carried without hesitation. Is to provide.

In order to achieve the above-mentioned object, the invention of the folding chair according to claim 1 is a state in which the pair of left and right front legs, the pair of left and right rear legs, and the front and rear legs are supported from below. And a pair of left and right front legs, wherein the front leg and the rear leg are folded close to each other and folded. From each upper end of the seat portion, a seat side frame portion is formed to extend rearward, and a lock bar is passed between the rear end portions of the left and right seat side frame portions, and the rear edge portion of the seat portion A concave portion is formed on the lower surface, and an operation handle having an engaging claw and a grip bar attached to the rear end portion of the engaging claw is provided at the tip of the engaging claw inside the concave portion. It is attached to the operation handle so that the engaging claw of the operation handle is urged by the urging force of the spring. Engage with the lock bar, grasp the grip bar as a handle, and rotate the operation handle about the axis to release the engagement between the engagement claw and the lock bar, and then The gist is to fold the rear edge of the part by turning it upward.
According to the above configuration, when the folding chair is folded, the gripping bar is gripped and the operation handle is rotated around the axis to release the engagement between the engagement claw and the lock bar and When the trailing edge is rotated upward, the folding chair is folded. And the folding chair in the folded state can be carried by grasping the seat. When the folding chair is folded, the seat can be rotated with one hand without using both hands.

The invention according to claim 2 is the invention of the folding chair according to claim 1, wherein the grip bar is arranged above the seat surface of the seat portion.
According to the above configuration, the grip bar can be easily visually recognized, and the folding chair in the folded state can be carried by gripping the grip bar as a handle without providing a handle on the seat.

The gist of the invention described in claim 3 is that, in the folding chair invention described in claim 1 or 2, the top surface portion of the recess is cut out without leaving a peripheral edge portion.
According to the above configuration, since the folding chair in a folded state can be carried by grasping the grip bar as a handle, it is not necessary to provide a handle for carrying, etc. on the seat, so the configuration is simple. It can be.

ADVANTAGE OF THE INVENTION According to this invention, while being able to fold with one hand, the folding chair of the folded state can be carried and stored without hesitation.

Hereinafter, an embodiment embodying the folding chair of the present invention will be described.
1 to 6 are a front view, a rear view, a top view, a bottom view, a side view, and a side cross-sectional view showing the folding chair of the embodiment in order.
The folding chair 10 includes a pair of left and right front legs 11, a pair of left and right rear legs 12, and a seat 13 supported from below by the pair of left and right front legs 11 and the pair of left and right rear legs 12. ing. Further, the folding chair 10 includes a backrest 14 and an elbow rest 15.

From each upper end of the pair of left and right front leg portions 11, a seat side frame portion 16 is formed to extend rearward (see FIGS. 4 and 5). From the rear ends of the pair of left and right seat side frame portions 16, a U-shaped backrest frame 17 is formed to extend upward so as to connect the left and right seat side frame portions. The pair of left and right front legs 11, the pair of left and right seat side frames 16 and the backrest frame 17 are bent from a single pipe.
A link bar 18 is passed between the upper end portions of the left and right front leg portions 11. A front support bar 19 is passed between the front end portions of the left and right seat side frame portions 16 (see FIGS. 4 and 5). A lock bar 20 is passed between the rear end portions of the left and right seat side frame portions 16 (FIG. 4).
FIG. 5).

The front leg portion 11 includes a front leg upper pipe 11A and a front leg lower pipe 11B in which the front leg upper pipe 11A is slidably inserted (see FIG. 5). The front leg upper pipe 11A is provided with an insertion pin 11D. The insertion pin 11D is provided so as to protrude on the outer peripheral surface of the front leg upper pipe 11A by being biased from the inside of the front leg upper pipe 11A. On the other hand, the front leg lower pipe 11B is provided with a plurality of locking holes 11C.
When adjusting the length of the front leg portion 11, the insertion pin 11D is pushed into the front leg upper pipe 11A while the front leg lower pipe 11B is moved with respect to the front leg upper pipe 11A, and the insertion pin 11D is moved to a predetermined length. The front leg lower pipe 11B is fixed to the front leg upper pipe 11A by engaging with the engaging hole 11C. Thus, the front leg portion 11 is configured to be adjustable in length by appropriately changing the engagement hole 11C for engaging the insertion pin 11D. Further, a rubber anti-slip cap 11E is attached to the lower end of the front leg lower pipe 11B, and the front leg 1
1 prevents slipping on the floor.

The backrest 14 is attached to the upper edge of the backrest frame 17. The backrest 14 is
You may fix with respect to the upper edge of the backrest frame 17, and you may attach so that rotation is possible. When the backrest 14 is pivotably attached to the upper edge of the backrest frame 17, the angle of the backrest 14 can be adjusted according to the physique of the user. The backrest 14
A gripping hole 14A is provided in the upper part of the folding chair 10 and the folding chair 10 is utilized using the gripping hole 14A.
Can be moved and lifted.
The elbow rest 15 is attached to each of the left and right sides of the backrest frame 17. The elbow rest 15 may be attached to the back frame 17 so as to be pivotable upward or may be fixed. When the elbow rest 15 is attached to the backrest frame 17 so as to be pivotable upward, the elbow rest 15 does not get in the way when a user sits on the folding chair 10 or when the folding chair 10 is folded. As described above, there is an effect that it can be rotated upward.

As described above, the rear leg 12 is provided with a pair of left and right, but the pair of left and right rear legs 1
2, a seat support frame portion 21 is formed to extend forward from each upper end portion (FIGS. 4 and 5).
reference). The pair of left and right rear leg portions 12 and the pair of left and right seat support frame portions 21 are each bent from a single pipe.
The front end (front end) of the seat support frame portion 21 is pivotally attached to a rotating seat 13A provided at an intermediate portion in the front-rear direction on the lower surface of the seat portion 13. Therefore, the rear leg 12 together with the seat support frame 21
The seat portion 13 is configured to be rotatable in the vertical direction. The seat support frame portion 21 and the left and right seat side frame portions 16 arranged outside the seat support frame portion 21 are pivotally attached to each other at an intermediate portion in the front-rear direction by a rotation shaft 23. As a result, the rear leg portion 12 and the seat support frame portion 21, and the front leg portion 11 and the left and right seat side frame portions 16 are relatively rotatable in the vertical direction around the rotation shaft 23. It is configured. A rear support bar 22 is passed between the rear ends of the left and right seat support frame portions 21 (see FIGS. 4 and 5).

The rear leg portion 12 includes a rear leg upper pipe 12A and a rear leg lower pipe 12B in which the rear leg upper pipe 12A is inserted (see FIG. 5). The rear leg upper pipe 12A is provided with an insertion pin 12D, and the insertion pin 12D is urged from the inside of the rear leg upper pipe 12A so as to be placed on the outer peripheral surface of the rear leg upper pipe 12A. It is provided to protrude. On the other hand, the rear leg lower pipe 12B is provided with a plurality of locking holes 12C. Rear leg 1
2 is adjusted, the rear leg lower pipe 12B is moved relative to the rear leg upper pipe 12A while pushing the insertion pin 12D into the rear leg upper pipe 12A, and the insertion pin 12D is moved to a predetermined engagement. The rear leg lower pipe 12B is fixed to the rear leg upper pipe 12A by engaging with the stop hole 12C. Thus, the rear leg portion 12 is configured to be adjustable in length by appropriately changing the locking hole 12C for engaging the insertion pin 12D. Further, the rear leg lower pipe 12
A rubber non-slip cap 12E is attached to the lower end of B to prevent the rear leg 12 from sliding on the floor.

The seat portion 13 is used with its upper surface 13B as a seating surface. A link seat 13 </ b> C is provided on the lower surface of the seat portion 13 at the front. A link 24 is passed between the link seat 13C and the link bar 18 of the front leg 11. The link 24 moves the front leg portion 11 and the seat side frame portion 16 in conjunction with the seat portion 13 when the seat portion 13 is rotated in the vertical direction with respect to the seat support frame portion 21. It functions to rotate with respect to the rear leg portion 12 and the seat support frame portion 21.

A pair of left and right front support seats 13 </ b> D are provided on the lower surface of the seat portion 13 in front of the middle portion in the front-rear direction. The front support seat 13D is placed on the front support bar 19 of the seat side frame portion 16. Then, by placing the front support seat 13D on the front support bar 19, the seat portion 13 is supported between the left and right seat side frame portions 16 via the front support bar 19.
A pair of left and right rear support seats 13E are provided on the lower surface of the seat portion 13 behind the middle portion in the front-rear direction.
Is provided. The rear support seat 13E is placed on the rear support bar 22 of the seat support frame portion 21. Then, the rear support seat 13E is placed on the rear support bar 22, and the front end of the seat support frame portion 21 is pivotally attached to the lower surface of the seat portion 13 via the rotating seat 13A. The seat portion 13 is supported on the left and right seat support frame portions 21.

Fig.7 (a) is the sectional side view to which the rear edge part of the seat part of the folding chair was expanded.
At the rear edge of the seat portion 13, a recess 13F is formed on the lower surface of the rear edge portion of the seat portion 13, and the recess 1
A handle 25 that is a rear edge portion of the top surface portion 13G is provided by cutting out the top surface portion 13G of the 3F leaving a peripheral edge portion. An operation handle 26 is provided below the handle 25 on the lower surface of the rear edge of the seat 13 and inside the recess 13F.
The operating handle 26 includes a pair of left and right engaging claws 27, a connecting rod 28 having a lateral L-shaped cross section that is passed between the front ends of the left and right engaging claws 27, and an operating member. It has a round bar-shaped grip bar 29 passed between the rear ends. In the operation handle 26, a shaft 30 is provided at the tip of one side surface (outer surface) of each engagement claw 27. The operating handle 26 is pivotally attached to the inner side of the recess 13F on the lower surface of the rear edge of the seat 13 so that the shaft 3
Centering on 0, the grip bar 29 is attached so as to be able to rotate in the vertical direction so as to approach or separate from the handle 25 (see FIGS. 7A and 7B). In addition, the grip bar 29 is
It is arranged so as to be parallel to the handle 25 and not to protrude rearward from the rear edge of the seat portion 13.
Further, a spring 31 is provided between the upper surface of the rear end portion of the engaging claw 27 and the lower surface of the rear edge portion of the seat portion 13 and the top surface portion 13G of the recess 13F. The spring 31 has the grip bar 29 so that the grip 2
The operation handle 26 is always urged in a direction away from 5 (downward). The operation handle 26 urged by the urging force of the spring 31 engages the engagement claw 27 with the lock bar 20.

Here, since the grip bar 29 is disposed so as not to protrude rearward from the rear edge of the seat portion 13, when the folding chair is used, the user's body hits the grip bar 29 or a towel is used. And the like, and the engagement between the engagement claw 27 and the lock bar 20 is prevented from being accidentally released during use.
Further, since the engaging claws 27 are paired on the left and right sides and are engaged with the left and right portions of the lock bar 20, the lock bar 20 is securely fixed by the engaging claws 27.

A folding method of the folding chair 10 will be described.
The folding chair 10 is folded by grasping and lifting the rear edge of the seat 13, rotating the seat 13 so that the upper surface of the seat 13 is the front side, and further, the front leg 11 and the rear leg. Complete by bringing the parts 12 close together.
7 (b) and 7 (c) are enlarged side sectional views of the rear edge of the seat when folded.
When the folding chair 10 is folded, when the rear edge of the seat 13 is gripped, the grip bar 29 is arranged in parallel with the handle 25, so that the handle 25 is gripped together with the handle 25. The grip bar 29 can be gripped (see FIG. 7B). As a result, while grasping the handle 25 in a natural manner, the grip bar 2
9 can be moved, and even a person who does not have a gripping force, particularly an elderly person or a handicapped person, can easily operate the grip bar 29.

If the grip bar 29 is gripped together with the handle 25 as described above, the entire operation handle 26 rotates upward about the shaft 30 against the biasing force of the spring 31 as the grip bar 29 moves. Then, the engagement between the engagement claw 27 and the lock bar 20 is released. At this time, the left and right engaging claws 27
Since the connecting bar 28 and the grip bar 29 are connected, the left and right engaging claws 27 move in conjunction with each other by moving the grip bar 29, and the left and right engaging claws 27 with respect to the lock bar 20 are moved. The disengagement operation can be reliably performed at a time.
After the engagement between the engagement claw 27 and the lock bar 20 is released, the user can
While holding 5, the rear edge of the seat 13 is grasped and lifted (see FIG. 7C). Then, the link 24 moves so that the front leg portion 11 approaches the rear leg portion 12 in conjunction with the seat portion 13, and the rear leg portion 12 moves so as to approach the front leg portion 11. Is folded.
In the folding method, the rear edge of the seat 13 can be grasped and lifted with one hand without using both hands. That is, about the movement of the front leg part 11 and the rear leg part 12,
When the front leg portion 11 and the rear leg portion 12 are lifted by grabbing the rear edge of the seat portion 13, the front leg portion 11 and the rear leg portion 12 naturally move so as to be suspended from the seat portion 13 by their respective weights.

FIG. 8 is a front view of the folding chair in a folded state, and FIG. 9 is a side view thereof.
In the folding chair 10 in the folded state, the seat side frame portion 16 and the seat support frame portion 21 are pivotally attached to each other in the middle portion in the front-rear direction, so that the front leg portion 11 and the rear leg portion 12 are in between. They are arranged in the front-rear direction with a gap. For this reason, the folding chair 10 in a folded state can be made independent by being supported by the front leg portion 11 and the rear leg portion 12.
The folded chair 10 in a folded state is carried by grasping the handle 25 of the seat portion 13. That is, in the folding chair 10 in the folded state, the length from the handle 25 of the seat portion 13 to the lower end of the front leg portion 11 or the rear leg portion 12 is shorter than when the backrest 14 is provided. The front leg portion 11 or the rear leg portion 12 is difficult to hit the floor. Accordingly, even a person who is not strong, particularly an elderly person or a handicapped person, can easily lift the front leg part 11 or the rear leg part 12 so as not to touch the floor, so that the front leg part 11 or the rear leg part 12 is dragged to the floor. Troubles to carry are eliminated.
And the folding chair 10 will be in the folding state by this seat part 13 making the upper surface 13B the front side. The seat portion 13 has a rotating seat 13A, a link seat 13C, and a front support seat 13 on its lower surface.
Various things such as D, the rear support seat 13E, the operation handle 26, and the like are arranged to lower the appearance. Various things that deteriorate the appearance of the folding chair 10 when the folding chair 10 in the folded state is viewed from the front side by folding the folding chair 10 with the upper surface 13B on the front side. Can do.

The folding chair of the present invention is not limited to the above embodiment. For example, the lock bar 20 is provided between the lower end of the backrest frame 17 or between the rear ends of the left and right seat support frame portions 21. Also good.
Further, the folding chair may be configured by omitting at least one of the backrest 14 and the elbow rest 15.

Further, the grip bar 29 is not limited to be disposed below the upper surface 13B (seat surface) of the seat portion 13 as shown in the embodiment, and for example, as shown in FIGS. 10 (a) and 10 (b). It may be arranged above the seat surface. With such a configuration, there is an effect that it is easy to visually recognize the grip bar 29 as an operation member, and the grip bar 2 is provided without providing the handle 25 on the seat portion 13.
By grasping 9 as a handle, the folding chair 10 in a folded state can be carried.

The spring 31 may be a plate-like one other than the coil-shaped one shown in the figure, or an elastic material such as synthetic rubber or elastomer may be used as the spring in place of the spring 31. The spring 31 may be omitted.

In the folding chair 10, the link bar 18 is omitted, and the link 24 is connected to the seat portion 1.
3 may be passed between the front link seat 13 </ b> C and the upper part of the pair of left and right front legs 11.
Moreover, as shown to Fig.11 (a), you may form the recessed part 13F so that the handle 25 may be formed, without notching the top | upper surface part 13G of the recessed part 13F. Alternatively, as shown in FIG. 11B, a recess 13F may be formed, and the top surface portion 13G of the recess 13F may be cut out without leaving a peripheral portion, and the handle 25 may be omitted.

The front view which shows the folding chair of embodiment. The rear view which shows the folding chair of embodiment. The top view which shows the folding chair of embodiment. The bottom view which shows the folding chair of embodiment. The side view which shows the folding chair of embodiment. The sectional side view which shows the folding chair of embodiment. (A)-(c) is sectional drawing which shows operation at the time of folding of a folding chair. The front view which shows the folding chair of the state folded. The side view which shows the folding chair of the state folded. (A), (b) is a side view which shows the folding chair of other embodiment. (A), (b) is a side view which shows the folding chair of other embodiment.

DESCRIPTION OF SYMBOLS 10 Folding chair 11 Front leg part 12 Rear leg part 13 Seat part 13B Upper surface 16 Seat side frame part 17 Back frame 18 Link bar 20 Lock bar 21 Seat support frame part 24 Link 25 Grip 27 Engagement claw 28 Connecting rod 29 Grasping bar

Claims (3)

A pair of left and right front legs, a pair of left and right rear legs, and a seat that uses the upper surface as a seating surface supported by the front legs and the rear legs from below; A folding chair that moves and folds the front leg and the rear leg close to each other,
From each upper end of the pair of left and right front leg portions, a seat side frame portion is formed to extend backward,
A lock bar is passed between the rear end portions of the left and right seat side frame portions,
Forming a recess in the lower surface of the rear edge of the seat,
Inside the recess, an operation handle having an engaging claw and a grip bar attached to the rear end of the engaging claw is rotated via a shaft provided at the tip of the engaging claw. It is attached movably,
The engaging claw of the operation handle is engaged with the lock bar by the biasing force of the spring,
By grasping the grip bar as a handle and rotating the operation handle about an axis,
A folding chair, wherein the engagement claw and the lock bar are disengaged and the rear edge of the seat portion is rotated upward to fold the chair.   The folding chair according to claim 1, wherein the grip bar is disposed above the seat surface of the seat. The folding chair according to claim 1 or 2, wherein the top surface portion of the concave portion is cut out without leaving a peripheral edge portion.

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