KR101478689B1 - Folding chair - Google Patents

Abstract

A foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable foldable folded foldable

A pair of left and right front side legs 11 and a pair of left and right rear side legs 12 and the front side legs 11 and the rear side legs 12 The folding chairs 10 having the seat portion 13 using the upper surface 13B as the seat surface in the state of being supported are arranged in the seat portion 13 in such a manner that the seat portion 13 And the seat 13 is rotated so that the upper surface 13B of the seat portion 13 becomes the front side and the front side leg portion 11 and the rear side It is possible to fold the side leg portions 12 close to each other and to stand independently in a folded state.

Folding

Description

Folding {FOLDING CHAIR}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a folding apparatus for use in the case where a senior citizen or a physically handicapped takes a shower in a bathroom.

Conventionally, as described in, for example, Japanese Patent Application Laid-Open Publication No. 2003-3258, the rear folding member is pivotally attached to the front side leg portion having the backrest frame integrally formed thereon and the rear side edge of the seat portion is pivotally attached to the rear side leg portion And a link is interposed between the intermediate portion in the front-rear direction of the seat portion and the front-side leg portion. The seat portion is rotated so that the lower surface of the seat portion is located on the front side when the front edge of the seat portion is lifted by using the both hands to grasp the front edge of the seat back portion and the seat portion, The front leg portion and the rear leg portion approach each other, thereby folding the folding fold.

[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2002-191523

However, as described above, the conventional folding stitcher needs to use both hands when folding. Further, when carrying the vehicle in a folded state, the backrest frame is lifted, so that it is necessary to lift the front side leg portion or the rear side leg portion to a sufficient height while paying attention not to touch the floor.

Further, since the lower surface of the seat portion becomes the front side when the self-supporting sheet is folded in the folded state, there is a problem that the appearance of the self-standing sheet is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and it is an object of the present invention to provide a sheet folding apparatus which can be folded with only one hand and can be easily carried without difficulty, And to provide a folding device capable of improving the appearance.

In order to achieve the above object, the invention of a folding chair according to claim 1 is characterized in that the front and rear left and right front legs, a pair of left and right rear legs, and front legs and rear legs, Wherein the rear portion of the seat portion is rearwardly held by the seat portion and the rear edge of the seat portion is held and lifted so that the upper surface of the seat portion is forward The seat portion is rotated, and the front leg portion and the rear leg portion are folded close to each other to be able to stand independently in a folded state.

According to the above configuration, since the self-standing can be made in a folded state, the folding apparatus can be left without folding the folded fold. As a result, in the case of resting for a short period of time in the folded state, it is possible to stand it independently at the position without leaning against the wall, so that it can be carried easily without difficulty. Further, since the seat portion is rotated so that the upper surface of the seat portion becomes the front side, the external value can be improved.

According to a second aspect of the present invention, there is provided a folding chair according to the first aspect of the present invention, wherein a link bar is inserted between the upper ends of the pair of left and right front side legs, It is important that there is.

According to a third aspect of the present invention, there is provided a folding device as set forth in the first aspect, wherein a link is interposed between an upper portion of the pair of left and right front side legs and a front portion of the seat portion.

According to the above configuration, when folding the fold, when the rear edge of the seat portion is lifted, the front leg portion and the rear leg portion come closer to each other by interlocking with the seat portion by the link, and the fold is folded. Therefore, the folding can be folded with one hand without using both hands.

According to a fourth aspect of the present invention, in the invention of the folding chair according to any one of the first to third aspects, the seat side frame portion is bent rearward from the upper ends of the pair of left and right front side legs, And a pair of left and right rear legs each having a seat support frame portion bent forwardly and the front ends of the left and right seat support frame portions are pivotally supported on the lower surface of the seat portion, And the left and right seat support frame portions and the left and right seat side frame portions are pivotally attached to each other.

According to the above configuration, since the left and right seat support frame portions and the right and left seat side frame portions are pivotally attached to each other, the folded folded stator approaches the conventional front leg portion and the rear leg portion And the front leg portion and the rear leg portion are arranged so as to lie in the forward and backward directions so that the folded folded state can be reliably self-sustained.

According to a fifth aspect of the present invention, in the invention of the folding chair according to any one of the first to fourth aspects, a handle is provided at the rear end of the seat portion.

Since the back frame needs to be lifted when carrying the folded folded fold, it is necessary to lift the folded fold to a sufficient height while paying attention not to touch the floor at the front side leg portion or the rear side leg portion. According to the configuration of claim 5, since the handle is provided on the seat portion, it is possible to carry the folded folded state by grasping the handle, so that it is unnecessary to care that the front side leg portion or the rear side leg portion does not touch the floor , The transportation can be easily performed without difficulty.

According to a sixth aspect of the present invention, in the invention of the folding chair according to the fourth or fifth aspect of the present invention, a U-shaped back frame is bent upwardly at the rear end of the seat side frame portion so as to connect the left and right seat- It is essential.

According to the above-described configuration, the backrest frame can be easily seated on the folding stool by the provision of the backrest frame, and the folded folding staple can be carried by holding the backrest frame.

According to a seventh aspect of the present invention, in the invention of the folding chair according to any one of the fourth to sixth aspects, between the rear ends of the right and left seat side frame portions, between the rear ends of the right and left seat support frame portions, A lock bar is inserted between the lower ends of the seat cushion so as to be pushed in the left and right direction and a claw is disposed on the lower side of the rear edge of the seat portion, And the engaging claw is folded after releasing the engagement of the lock bar with the engaging claw.

According to the above configuration, engagement between the engagement claw and the lock bar can be made sure by the spring.

According to an eighth aspect of the present invention, in the folding claw according to the seventh aspect of the present invention, the operating member is provided at the rear end or the front end portion of the engaging claw, and the engaging claw is slid with respect to the seat portion And the engaging claw slides and the engaging of the engaging claw and the lock bar is released by pulling the operating member backward or forward.

According to the above configuration, by providing the operating member, the engaging claw can easily slide backward or forward.

According to a ninth aspect of the present invention, in the folding claw according to the seventh aspect of the invention, the operating member is provided at the rear end or the front end portion of the engaging claw, and the upper end of the engaging claw is pivotally attached to the lower surface of the seat portion, And the engaging claw is rotated by pulling up the operating member to release the engaging of the engaging claw and the lock bar.

According to the above configuration, the engagement claw can be easily rotated by providing the operation member.

According to a tenth aspect of the present invention, in the invention of the folding chair according to the ninth aspect, a handle is provided on a rear side edge or a front side edge of the seat portion so as to have a positional relationship corresponding to the lock bar, And when the operating member is pulled close to the handle, the engaging claw rotates to release the engaging of the engaging claw and the lock bar.

According to the above configuration, the handle is provided so as to have a positional relationship corresponding to the lock bar, so that the handle can be held and the operation member can be held together with the handle. This makes it possible to move the operating member by applying a force to the entire palm as compared with the case where the operating member is moved by applying a force with only the finger.

According to an eleventh aspect of the present invention, in the invention according to claim 10, the lock bar and the handle are disposed on the rear side edge of the seat portion, and the engagement claw and the operation member are provided on the rear portion of the lower surface of the seat portion And a direction in which the operating member is pulled close to the handle is upward such that a direction in which the operating member is pulled close to the handle is equal to a direction in which the operating member is pulled close to the handle, The engagement of the lock bar is released, and in this state, the operation member and the handle are pulled up to rotate the rear edge of the seat portion upward.

According to the above configuration, since the direction in which the operating member is pulled close to the handle is upward, same as the direction in which the rear side edge of the seat portion is rotated when folded, the force is applied to the entire palm to move the operating member, The operation can be connected to the state in which the seat portion is rotated. As a result, the operation from the operation of moving the operating member to the operation of rotating the rear side edge of the seat portion upwardly can be carried out easily by a series of operations. In addition, when the folding-type folding sta- tion is carried by holding the handle of the seat portion, the folding-up folding-up operation can be included in the series of operations.

According to a twelfth aspect of the present invention, in the invention of the folding chair according to the tenth or eleventh aspect, the operating member is formed in a bar shape and is disposed parallel to the handle.

According to the above configuration, since the operating member is formed into a bar shape and disposed parallel to the handle, it is easy to grasp the operating member together with the handle by grasping the handle and more easily apply force to the entirety of the palm of the operating member It is possible to easily operate the operating member even for a person who has no grip, particularly, for the elderly person or a physically handicapped person.

EFFECTS OF THE INVENTION [

According to the present invention, the folding of the foldable foldable foldable staple can be achieved by folding the folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded folded , And storage can be carried out without difficulty.

Hereinafter, an embodiment of the present invention will be described.

Figs. 1 to 6 are a front view, a rear view, a top view, a bottom view, a side view, and a side sectional view, respectively, of a folding stitch of the embodiment.

The folding chair 10 includes a pair of left and right front side legs 11, a pair of left and right rear side legs 12, a pair of left and right front side legs 11, And a seat portion (13) supported by the side leg portion (12) from below. Further, the stiffener 10 is provided with a backrest 14 and an armrest 15.

A seat side frame portion 16 extends rearward from the upper ends of each pair of left and right front side leg portions 11 (see Figs. 4 and 5). A U-shaped back frame 17 extends upward from a rear end of the left and right pair of seat side frame portions 16 so as to connect the left and right side seat side frame portions. These pair of left and right front side legs 11, a pair of right side and left side seat side frame portions 16 and backrest frame 17 are bent by one pipe.

A link bar 18 is interposed between the upper ends of the left and right front side leg portions 11. The front side support bars 19 are interposed between front ends of the right and left seat side frame portions 16 (see FIGS. 4 and 5). Between the rear end portions of the right and left seat side frame portions 16, a lock bar 20 is inserted and spanned (see Figs. 4 and 5).

The front leg portion 11 has a front leg upper pipe 11A and a front leg lower pipe 11B into which the front leg upper pipe 11A is slidably inserted ). The front leg upper pipe 11A is provided with an insertion pin 11D. The insertion pin 11D is formed to protrude from the outer circumferential 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, a plurality of engagement holes 11C are formed in the front leg lower pipe 11B. When the length of the front leg portion 11 is adjusted, the insertion pin 11D is pushed into the front leg upper pipe 11A, And the front leg lower pipe 11B is fixed to the front leg upper pipe 11A by moving the insertion leg pin 11B and engaging the insertion pin 11D with the predetermined engagement hole 11C. By appropriately changing the latching hole 11C in which the insertion pin 11D is engaged, the length of the front leg portion 11 is adjustable. A rubber non-slip cap 11E is attached to the lower end of the front leg lower pipe 11B to prevent the front leg 11 from slipping on the floor.

The backrest 14 is attached to the upper edge of the backrest frame 17. The backrest 14 may be fixed to the upper edge of the backrest frame 17, or it may be rotatably attached. When the backrest 14 is rotatably attached to the upper edge of the backrest frame 17, the angle of the backrest 14 can be adjusted according to the user's body size or the like. A gripping hole 14A is formed in the upper portion of the backrest 14 so that the folding mouth 14A can be used to move or raise the folding staple 10. [

The armrest 15 is attached to both the left and right sides of the backrest frame 17. The armrest 15 may be attached to the backrest frame 17 so as to be rotatable upward, or may be fixed thereto. When the user places the armrest 15 on the backrest frame 17 so as to be rotatable upward and the user places the armrest 15 on the backrest 10 or folds the folding armrest 10, So that it can be rotated upward so as not to be disturbed.

As described above, the rear leg portion 12 is provided with a pair of left and right sides, but the seat supporting frame portion 21 is extended forward from the upper end of each of the left and right pair of rear leg portions 12 (See Figs. 4 and 5). The left and right pair of rear leg portions 12 and a pair of left and right seat support frame portions 21 are each bent in a single pipe.

The front end (front end) of the seat support frame portion 21 is pivotally attached to a rotary seat 13A provided at an intermediate portion in the longitudinal direction on the lower surface of the seat portion 13. [ Therefore, the rear leg portion 12 is configured to be vertically rotatable with respect to the seat portion 13 together with the seat supporting frame portion 21. [ The seat support frame portion 21 and the left and right seat side frame portions 16 disposed on the outside thereof are pivotally attached to each other at an intermediate portion in the front and rear direction by a rotary shaft 23. As a result, the rear leg portion 12, the seat support frame portion 21, the front leg portion 11, and the right and left seat side frame portions 16 are relatively So as to be vertically rotatable. In addition, a rear side support bar 22 is interposed between the left and right seat support frame portions 21 and the rear end thereof (see Figs. 4 and 5).

The rear leg portion 12 has a rear leg upper pipe 12A and a rear leg lower pipe 12B into 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 biased from the inside of the rear leg upper pipe 12A, And is formed to protrude from the outer circumferential surface of the base 12A. On the other hand, a plurality of engagement holes 12C are formed in the rear leg lower pipe 12B. When the length of the rear leg 12 is adjusted, the insertion pin 12D is pushed into the rear leg upper pipe 12A and the rear leg leg upper pipe 12A is inserted into the rear leg leg upper pipe 12A, And the rear leg lower pipe 12B is fixed to the rear leg upper pipe 12A by engaging the insertion pin 12D with the predetermined engaging hole 12C. By appropriately changing the latching hole 12C in which the insertion pin 12D is engaged, the rear leg portion 12 is configured to be adjustable in length. A rubber non-slip cap 12E is attached to the lower end of the rear leg lower pipe 12B to prevent the rear leg 12 from slipping on the floor.

The upper surface 13B of the seat portion 13 is used as a seat surface. A link sheet 13C is provided on the front surface of the lower surface of the seat portion 13. [ A link 24 is interposed between the link sheet 13C and the link bar 18 of the front leg portion 11. [ The link 24 is configured to move in the vertical direction with respect to the seat support frame portion 21 so that the front leg portion 11 and the seat portion 13 are interlocked with the seat portion 13 when the seat portion 13 is rotated in the up- Side frame portion 16 to rotate with respect to the rear leg portion 12 and the seat support frame portion 21. [

In the folding chair 10 of the present invention, the link bar 18 is omitted and the link 24 is connected to the front link sheet 13C of the seat portion 13 and the left and right front- And may be sandwiched and interposed between the upper portions of the upper and lower plates 11.

On the lower surface of the seat portion 13, a pair of left and right front side support seats 13D are provided forward of the intermediate portion in the front-rear direction. The front side support sheet 13D is mounted on the front side support bar 19 of the seat side frame portion 16. [ By mounting the front side support sheet 13D on the front side support bar 19, the seat part 13 is supported on the left and right side seat side frame parts 16 via the front side support bars 19. [ Respectively.

A pair of left and right rear side support sheets 13E are provided on the lower surface of the seat portion 13 on the rear side of the intermediate portion in the front and rear direction. And the rear side support sheet 13E is mounted on the rear side support bar 22 of the seat support frame portion 21. [ The rear support bar 13 is mounted on the rear support bar 22 and the front end of the seat support frame 21 is engaged with the rotation seat 13A on the bottom surface of the seat 13, So that the seat portion 13 is supported on the right and left seat support frame portions 21.

7 (a) is a side cross-sectional view of an enlarged rear side edge portion of the seat portion of the folding chair.

A concave portion 13F is formed on the rear side edge portion of the seat portion 13 at the rear edge of the seat portion 13 and a circumferential edge portion of the ceiling surface portion 13G of the concave portion 13F is formed And a handle 25 as a rear side edge portion of the ceiling surface portion 13G is provided by cutting and leaving. An operation handle 26 is provided below the handle 25 on the inner side of the concave portion 13F on the rear side edge portion of the seat portion 13. [

The manipulating handle 26 includes a pair of left and right engaging claws 27 and a connecting rod 28 having a transverse L-shaped cross section and sandwiched between the front ends of the right and left engaging claws 27, And a grip bar 29 of a round rod shape sandwiched between the rear end portions as an operating member. A shaft 30 is provided at the distal end of one side (outer side) of each engaging claw 27 in the operating handle 26. The shaft 30 is pivotally mounted on the inside of the concave portion 13F at the bottom of the rear side edge portion of the seat portion 13 so that the handle bar 29 is pivotally mounted on the shaft 30, (See Figs. 7 (a) and 7 (b)) so as to be vertically rotatable so as to approach or move away from the knob 25. Fig. The grip bar 29 is disposed so as not to protrude rearward beyond the rear edge of the seat portion 13 in parallel with the handle 25.

A spring 31 is provided between the upper surface of the rear end of the engaging claw 27 and the ceiling surface portion 13G of the concave portion 13F on the bottom surface of the rear portion of the seat portion 13. The spring 31 constantly biases the manipulation handle 26 in a direction in which the grip bar 29 is separated from the handle 25 (downward). The manipulating handle 26 biased by the biasing force of the spring 31 engages the engaging claw 27 with the lock bar 20.

Since the grip bar 29 is disposed so as not to protrude rearward beyond the rear edge of the seat portion 13, when the user touches the grip bar 29 at the time of using the fold, Or the engaging of the engaging claw 27 with the lock bar 20 is prevented from being erroneously released during use.

Since the engaging claws 27 are made to be paired in the right and left directions and are engaged with the two left and right portions of the lock bar 20, the locking claws 27 are firmly fixed by the engaging claws 27 .

A method of folding the folding staple 10 will be described.

When folding the folding staple 10 of the present invention, both the grip 25 on the rear side edge of the seat portion 13 and the gripping bar 29 are grasped together with one hand to unlock the seat portion. The front side leg portion 11 and the rear side leg portion 12 approach each other when the seat portion 13 is lifted with both the grip 25 and the grip bar 29 held. At this time, although the position of the knob 25 and the position of the center of the folding compartment 10 are slightly shifted in the front-rear direction of the fold 10, the front-side leg portion 11 and the rear- The folded stairs 10 are not tilted because they approach and slip on the floor while being grounded. When the seat portion 13 is further lifted, the front leg portion 11 and the rear leg portion 12 are completely close to each other, and the folding of the folding staple 10 is completed.

The position of the handle 25 in the forward and backward directions of the folding chair 10 and the position of the handle 25 in the forward and backward directions of the folding chair 10 in a state in which the folding chair 10 is folded and the handle 25 of the seat unit 13 is gripped The chair 10 is set so that the positions of the centers of the chairs 10 coincide with each other, so that the chair 10 maintains a vertical state without tilting. Finally, the chair 10 can stand alone by merely resting the folded state of the chair 10 on the floor again.

As described above, the folding of the folding staple 10 grasps and lifts the rear edge of the seat portion 13, rotates the seat portion 13 so that the upper surface of the seat portion 13 becomes the front side, The front leg portion 11 and the rear leg portion 12 are completed by approaching each other.

Figs. 7 (b) and 7 (c) are enlarged side sectional views of the rear side edge portion of the seat portion at the time of folding. Fig.

Since the grip bar 29 is disposed in parallel with the handle 25 when the rear edge of the seat portion 13 is gripped at the folding of the fold 10, So as to grip the grip bar 29 together with the handle 25 (see Fig. 7 (b)). As a result, it is possible to move the gripping bar 29 by applying a force to the entire palm while being a natural operation of gripping the grip 25, and even in the case of a person without grip strength, especially an elderly person or a person with a physical disability, Can be performed comfortably.

When the grip bar 29 is gripped together with the handle 25 as described above, the entire operation handle 26 is pressed against the biasing force of the spring 31 in accordance with the movement of the grip bar 29, The engagement between the engagement claw 27 and the lock bar 20 is released. At this time, since the right and left coupling claws 27 are connected to the coupling rod 28 and the grip bar 29, the right and left coupling claws 27 are interlocked with each other by moving the grip bar 29 And the disengagement operation of the left and right engagement claws 27 with respect to the lock bar 20 can be reliably performed at one time.

After the engaging claw 27 and the lock bar 20 are disengaged from each other, the user grasps and lifts the rear edge of the seat portion 13 while holding the handle 25 (Fig. 7 (c)). The front side leg portion 11 moves toward the rear side leg portion 12 in cooperation with the seat portion 13 by the link 24 and the rear side leg portion 12 also moves toward the front side leg portion 12, So that the folded fold 10 is folded.

In the folding method, the rear edge of the seat portion 13 can be gripped and lifted with one hand without using both hands. That is, with respect to the movement of the front side leg portion 11 and the rear side leg portion 12, the front side leg portion 11 and the rear side leg portion 12 are located on the rear side edge of the seat portion 13 And if lifted up, it hangs on the seat portion 13 by each weight, and moves naturally.

Fig. 8 is a front view of the folded folded state, and Fig. 9 is a side view thereof.

Since the seat side frame portion 16 and the seat support frame portion 21 are pivotally attached to each other at the intermediate portion in the front and rear direction in the folded state of the folding stator 10 in the folded state, And the leg portions 12 are arranged so as to lie in the forward and backward directions. Therefore, the foldable stitcher 10 in the folded state can be held independently by being supported by the front leg portion 11 and the rear leg portion 12.

Further, the folding stitcher 10 in the folded state is carried by gripping the handle 25 of the seat portion 13. In the folded stool 10 in the folded state, as compared with the case in which the backrest 14 is held, the distance from the handle 25 of the seat portion 13 to the front side leg portion 11 or the rear side leg portion 12 Since the length to the lower end is short, it is difficult for the front side leg portion 11 or the rear side leg portion 12 to touch the floor. Therefore, even if there is a forceless person, particularly an elderly person or a physically handicapped person, the front leg 11 or the rear leg 12 can easily be raised so that they do not touch the floor, The problem that the side leg portion 12 is dragged on the floor while being dragged is solved.

Then, the folding section 10 is folded with the seat section 13 facing the upper surface 13B. In the seat portion 13, the external quantities such as the rotation sheet 13A, the link sheet 13C, the front side support sheet 13D, the back side support sheet 13E, the operation handle 26, Various things are arranged. When the folded fold 10 is seen from the front side, the folded fold 13B is folded to the front side, so that the folded fold 10 is hidden from the front side, thereby improving the extrinsic value.

The lock bar 20 may be formed between the lower ends of the backrest frame 17 or between the rear ends of the right and left seat support frame portions 21 do.

At least one of the backrest 14 and the armrest 15 may be omitted to form a folding chair.

The grip bar 29 is not limited to being disposed below the upper surface 13B (seat surface) of the seat portion 13 as shown in the embodiment, It may be arranged above the sheet surface as shown in Fig. This configuration is advantageous in that it is easy to visually confirm the gripping bar 29 as the operating member and the gripping bar 29 can be easily gripped by the grips 29 even if the handle 25 is not provided on the seat 13, So as to carry the folded fold 10 in a folded state.

The operating member in the folding chair according to the present invention is not limited to the grip bar 29 of the operating handle 26 as described above. For example, the sliding lever 26A shown in Figs. 11 (a) and 11 (b) Of the tension bar 29A. The tension bar 29A of the slide lever 26A is provided at the rear of the engagement claw 27. [ The tension bar 29A is configured such that the slide shaft 30a provided on the both side surfaces of the slide lever 26A is inserted into the slide groove 30b formed in the rear lower face of the seat portion 13 to slide rearwardly of the folding chair 10 It is configured to be movable. One end of a spring 31 made of a tension spring is connected and fixed to the tip end of the slide lever 26A and the other end of the spring 31 is fixedly connected to a lower surface of the seat portion 13. [ When the tension bar 29A is pulled backward as indicated by an arrow in Fig. 11 (a), the engaging claw 27 and the lock bar 20 are disengaged from each other and the folding collars 10 can be folded. With this configuration, even if the handle 25 is not provided on the seat portion 13, it is possible to carry the folded fold 10 in the folded state by gripping the tension bar 29A of the slide lever 26A with the handle have.

The tension bar 29A may be provided in front of the engaging claw 27 and may be slidably attached to the front of the fold 10 in the front lower face of the seat portion 13. [ When the tension bar 29A is attached to the front portion of the seat portion 13 as described above, when the tension bar 29A is pulled forward, the engagement of the engagement claw 27 and the lock bar 20 is released.

Further, the operating member is not limited to a holding type such as the grip bar 29 and a pulling type such as the tension bar 29A, but may be a holding type such as a handle or a like type such as a dial, a lever, Or a pushing type such as a switch, a button, or the like.

It is also possible to omit the operating member such as the grip bar 29 and the tension bar 29A and to release the engagement with the lock bar 20 by pressing the engaging claw 27 with a finger.

In addition, it is not always necessary to provide one pair of the engagement claws 27, and only one of the right and left coupling claws 27 may be provided in the middle of the right or left direction, May be installed.

Instead of the lock bar 20, a convex portion or a concave portion engageable with the engaging claw 27 may be formed on the lower surface of the seat portion 13. [

In addition, the spring 31 may be of a plate shape other than the illustrated coil shape, or an elastic material such as synthetic rubber or elastomer may be used instead of such a spring 31 as a spring. Also, the spring 31 may be omitted.

The link bar 18 is omitted in the folding chair 10 and the link 24 is connected to the link sheet 13C in the front part of the seat part 13 and the pair of left and right front leg parts 11 It may be sandwiched between the upper portions.

The concave portion 13F may be formed so that the handle 25 is formed without cutting the ceiling surface portion 13G of the concave portion 13F as shown in Fig. 12 (a). Alternatively, as shown in Fig. 12 (b), the recess 25 may be omitted by forming the recess 13F and cutting out the ceiling surface portion 13G of the recess 13F without leaving the marginal portion.

The lock bar 20 and the handle 25 are disposed on the front side edge of the seat portion 13 and the engagement claws 27 and the grip bar 29 are disposed on the front portion of the seat portion 13, The front edge of the seat portion 13 may be rotated upward by pulling up the front side edge of the seat portion 13.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a folding apparatus according to the embodiment; FIG.

2 is a rear view showing the folding apparatus of the embodiment.

Fig. 3 is a plan view showing the folding apparatus of the embodiment. Fig.

Fig. 4 is a bottom view showing the folding apparatus of the embodiment. Fig.

Fig. 5 is a side view showing the fold of the embodiment. Fig.

6 is a side cross-sectional view showing the folding apparatus of the embodiment.

Figs. 7 (a) to 7 (c) are cross-sectional views showing the folding operation of the folding fold. Fig.

8 is a front view showing the folded folded state.

9 is a side view showing the folded folded state.

Figs. 10 (a) and 10 (b) are side views showing a fold according to another embodiment; Fig.

Figs. 11 (a) and 11 (b) are side views showing a fold according to another embodiment;

Figs. 12 (a) and 12 (b) are side views showing a fold according to another embodiment. Fig.

DESCRIPTION OF THE REFERENCE NUMERALS (S)

10: Folding compartment 11: Front side leg

12: rear leg portion 13: seat portion

13B: upper surface 16: seat side frame portion

17: backrest frame 18: link bar

20: Lock bar 21: Seat supporting frame part

24: Link 25: Handle

27: engaging claw 28: connecting rod

29: Phage bars

Claims (21)

A pair of right and left front side legs, a pair of left and right rear side legs, and a seat portion using the upper surface as a seat surface in a state of being supported from below by these front side leg portions and rear side leg portions, as: A seat side frame portion is bent backward from the upper ends of the pair of left and right front side leg portions, the seat portion is supported between the left and right seat side frame portions, and upper ends of the left and right rear side leg portions The seat support frame portion is bent forward and the front ends of the left and right seat support frame portions are respectively pivotally attached to the lower surface of the seat portion and the left and right seat support frame portions and the right and left seat side frame portions are pivotally attached to each other And a rotary seat which is the center of rotation of the seat portion is provided at an intermediate portion in the front and rear direction on the lower surface of the seat portion. Between the upper portion of the left and right front pair of leg portions and the link sheet formed on the front portion of the seat portion The link is intertwined, The seat portion is rotated so that the upper surface of the seat portion is located at the front side with the rotary seat as a rotation center, Wherein the front leg portion and the rear leg portion are folded so as to approach each other and can stand up in a folded state. The folding chair according to claim 1, characterized in that a link bar is inserted between the upper ends of the pair of left and right front side legs, and a link is interposed between the link bars and the link sheet formed in the front portion of the seat portion . delete delete The folding fold according to claim 1, wherein a handle is provided at a rear end of the seat portion. 2. The folding folding device according to claim 1, wherein a U-shaped back frame is bent upward to connect the right and left seat side frame portions to the rear ends of the right and left seat side frame portions. The seat belt retractor according to claim 6, wherein a lock bar is interposed between the rear ends of the left and right seat side frame portions, between the rear ends of the right and left seat support frame portions, or between the lower ends of the right and left backrest frames, The engagement claw is engaged with the lock bar by the biasing force of the spring, It is possible to lift the rear portion of the seat portion after releasing the engagement between the engagement claw and the lock bar, Wherein the spring is provided between an upper surface of a rear end of the engaging claw and a lower surface of a rear edge of the seat portion. 8. The seat according to claim 7, wherein an operating member is provided at a rear end portion or a front end portion of the engaging claw, and the engaging claw is attached to the seat portion so as to be slidable on the lower surface of the seat portion, And the engaging claw slides and the engaging of the engaging claw and the lock bar is released by pulling the operating member backward or forward. The seat according to claim 7, wherein an operating member is provided at a rear end or a front end portion of the engaging claw, and an upper end of the engaging claw is pivotally attached to a lower surface of the seat portion, And the engaging claw is rotated by pulling up the operating member to release the engaging of the engaging claw and the lock bar. 10. The seat according to claim 9, wherein a handle is provided on a rear side edge or a front side edge of the seat portion so as to have a positional relationship corresponding to the lock bar, Wherein when the operating member is pulled close to the handle by grasping the handle together with the operating member, the engaging claw rotates to release the engaging of the engaging claw and the lock bar. 11. The seat according to claim 10, wherein the engagement claw and the operating member are disposed at a rear portion of a lower surface of the seat portion, The direction in which the operating member is pulled close to the handle is upward, in the same manner as the direction in which the rear portion of the seat portion is rotated when the rear portion of the seat portion is raised and folded, When the operating member is pulled close to the handle, the meshing between the engaging claw and the lock bar is released, and in this state, the operating member and the handle are pulled up to rotate the rear edge of the seat portion upwardly The fold. 11. The folding fold of claim 10, wherein the operating member is formed in a bar shape and is disposed in parallel with the handle. delete 6. The folding folding device according to claim 5, wherein a U-shaped back frame is bent upwardly at the rear end of the seat side frame portion to connect the left and right seat side frame portions. delete delete delete 6. The seat according to claim 5, wherein a U-shaped back frame is bent upward to connect the left and right seat-side frame portions at the rear end of the seat- A lock bar is interposed between the rear ends of the right and left seat side frame portions or between the rear ends of the left and right seat support frame portions or between the lower ends of the right and left backrest frames, The engagement claw is engaged with the lock bar by the biasing force of the spring, It is possible to lift the rear portion of the seat portion after releasing the engagement between the engagement claw and the lock bar, Wherein the spring is provided between an upper surface of a rear end of the engaging claw and a lower surface of a rear edge of the seat portion. delete delete 12. The folding stitcher according to claim 11, wherein the operating member is formed in a bar shape and is disposed in parallel with the handle.

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