JP5064850B2 - Chair - Google Patents

Description

  The present invention relates to a chair used by elderly people and disabled people.

Conventionally, the chair as described above is provided with a backrest so that a care recipient such as an elderly person or a disabled person can easily sit. Moreover, in order to make such a chair easy to handle, for example, a chair that can be folded as shown in Patent Document 1, and a chair that is easy to disassemble and assemble as shown in Patent Document 2 are provided. Yes.
JP 2004-261328 A Utility Model Registration No. 3087260

However, in the conventional chair, there is a problem that the backrest becomes an obstacle when the caregiver tries to move the cared person's body or hold the armpit from behind. Moreover, even in a chair with a detachable backrest, there is a problem that it is difficult to attach and detach the backrest because the backrest frame is fixed on the lower surface of the seat.
The present invention has been made paying attention to such problems existing in the prior art. The object is to provide a chair that can be easily attached and detached from the backrest.

In order to achieve the above object, the invention of the chair according to claim 1 is a chair in which a U-shaped back frame is established in a chair body provided with a seat, and the back frame is a right and left A pair of side frames and a backrest are provided, and an upper portion of the chair body is provided with a mounting portion for mounting the pair of left and right side frames, and the mounting portion is erected upward. It is composed of a pair of left and right insertion cylinders, and a waist pad is passed between the pair of left and right insertion cylinders, and the pair of left and right side frames are attached to the mounting part, or from the mounting part The gist of the invention is that the back frame is made detachable from the chair body by pulling the pair of left and right side frames upward.
According to the said structure, a mounting part is provided in the upper part of a chair main body, and the side frame of a backrest frame is mounted | worn with or removed from this mounting part. For this reason, when the cared person can sit comfortably, the backrest frame can be attached to the chair body, but when the backrest gets in the way, the side frame can be pulled upward to remove the backrest frame from the chair body. The backrest can be easily attached and detached.

In addition, since the hip pad is provided with the back of the cared person, the hips of the cared person enter the space between the back pad and the seat. Can be prevented from falling downward from the rear edge of the seat portion.

The invention according to claim 2 is the chair invention according to claim 1 , wherein the upper end portion of the insertion tube is provided with a tube end cap to which the lower end portion of the side frame is fitted, Insertion holes are respectively provided in the tube end cap and the side frame, and after aligning the insertion holes of the tube end cap and the side frame, an engagement bar is inserted into the insertion holes. The gist.
According to the above configuration, after the pipe end cap and the insertion holes of the side frame are aligned, the engagement bar is inserted into these insertion holes, so that when the backrest frame is pulled up unexpectedly, the backrest The frame can be prevented from being detached from the chair body.

The invention of claim 3 is the invention of the chair according to claim 2, the tube end cap is summarized in that which is to the waist rely integrally.
According to the above configuration, since the tube end cap is integrated with the waist pad, the number of parts can be reduced, and the assembly of the chair can be facilitated.

According to a fourth aspect of the present invention, in the chair invention according to the second or third aspect , an elastic notch ring for securing the tube end cap is attached to a root end of the engagement bar. It is a summary.
According to the above configuration, by attaching the notch ring, it is possible to prevent the tube end cap from being pulled out, to prevent the engagement bar from falling out of the insertion hole, and for the back frame to be unexpectedly detached from the chair body. Can be prevented from being detached.

According to a fifth aspect of the present invention, in the chair invention according to any one of the second to fourth aspects, a chuck made of a synthetic resin for preventing rattling is provided at the lower end of the side frame. The gist is that it is attached.
According to the above configuration, the chair has a configuration in which the backrest frame is detachable, and the backrest frame can be prevented from rattling during use.

  According to the present invention, the backrest can be easily attached and detached.

Hereinafter, one embodiment which materialized the chair of the present invention is described.
1 to 4 are a front view, a rear view, a bottom view, and a side cross-sectional view showing the chair of the embodiment in order.
The chair 10 includes a chair main body 10 </ b> A including a front leg part 11, a rear leg part 12, and a seat part 13 supported from below by the front leg 11 and the rear leg 12. Further, the chair 10 includes a backrest frame 10 </ b> B including a backrest 14 and an elbow rest 15.

First, the chair body 10A will be described.
The front leg portion 11 is provided with a pair of left and right. A seat side frame 16 is formed at the upper end of each of the pair of left and right front legs 11 so as to extend rearward (see FIG. 3). An insertion tube 17 is formed at the rear end of the seat side frame portion 16 so as to extend upward (see FIGS. 1 and 4). The front leg portion 11, the seat side frame portion 16 and the insertion tube 17 are bent from a single pipe.
A link bar 18 is passed between the upper ends of the left and right front leg portions 11. A front support bar 19 is passed between the front ends of the left and right seat side frame portions 16 (see FIGS. 3 and 4). A lock bar 20 is passed between the rear ends of the left and right seat side frame portions 16 (see FIGS. 3 and 4). The pair of left and right insertion cylinders 17 arranged on the upper portion of the chair body 10A constitutes a mounting portion for attaching the back frame 10B.

  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 inserted (see FIG. 4). The front leg upper pipe 11A is provided with an insertion pin 11D that is urged from the inside of the front leg upper pipe 11A and protrudes on the outer peripheral surface of the front leg upper pipe 11A. On the other hand, the front leg lower pipe 11B is provided with a plurality of retaining holes 11C. The front leg portion 11 moves the front leg lower pipe 11B relative to the front leg upper pipe 11A while pushing the insertion pin 11D into the front leg upper pipe 11A, and a stop hole into which the insertion pin 11D is engaged. The length can be adjusted by appropriately changing 11C. Furthermore, a rubber anti-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 rear leg 12 is provided with a pair of left and right. A seat support frame portion 21 is formed at the upper end of each of the pair of left and right rear leg portions 12 so as to extend forward (see FIGS. 3 and 4). The pair of left and right rear leg portions 12 and the pair of left and right seat support frame portions 21 are 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 (see FIG. 3). Accordingly, the rear leg portion 12 is configured to be rotatable in the vertical direction with respect to the seat portion 13 together with the seat support frame portion 21. The seat support frame portion 21 and the left and right seat side frame portions 16 are pivotally connected to each other in the middle 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 rotatable in the vertical direction with respect to each other about 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. 3 and 4).

  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. 4). In the rear leg upper pipe 12A, an insertion pin 12D is provided so as to be urged from the inside of the rear leg upper pipe 12A and to protrude on the outer peripheral surface of the rear leg upper pipe 12A. On the other hand, the rear leg lower pipe 12B is provided with a plurality of retaining holes 12C. The rear leg portion 12 moves the lower leg lower pipe 12B 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 engaged. The length can be adjusted by appropriately changing the retaining hole 12C. Further, a rubber anti-slip cap 12E is attached to the lower end of the rear leg lower pipe 12B to prevent the rear leg 12 from sliding on the floor.

The seat 13 is used with its upper surface 13B as a seating surface. A link seat 13 </ b> C is provided at the front end of the lower surface of the seat portion 13. A link 24 is passed between the link seat 13C and the link bar 18 of the front leg 11. When the seat portion 13 is rotated with respect to the seat support frame portion 21, the link 24 links the front leg portion 11 and the seat side frame portion 16 to the rear leg in conjunction with the seat portion 13. It functions to rotate with respect to the portion 12 and the seat support frame portion 21.
A pair of left and right front support seats 13D are provided on the lower surface of the seat portion 13 on the front side in 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. The seat 13 is supported between the left and right seat-side frames 16 by placing the front support seat 13D on 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 on the rear side in the middle portion in the front-rear direction. 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. The left and right seat support frame portions 21 are supported.

A handle 25 is provided on the rear edge of the seat portion 13 by making the lower surface of the rear edge portion of the seat portion 13 concave and by cutting out the top of the concave portion. An operation handle 26 is provided below the handle 25 on the inner side of the concave portion on the lower surface of the rear edge portion of the seat portion 13.
The operation handle 26 includes a pair of left and right engaging claws 27, a connecting rod 28 having a horizontal L-shaped cross section that extends between the front end portions (between the front end portions) of the left and right engaging claws 27, and a rear end portion. It is composed of a round bar-shaped grip bar 29 passed between the two. In the operation handle 26, a shaft 30 is provided at the tip of one side surface (outer surface) of each engagement claw 27. When the shaft 30 is pivotally attached to the lower surface of the rear edge portion of the seat portion 13, the operation handle 26 is vertically moved so that the grip bar 29 approaches or separates from the handle 25 around the shaft 30. It is attached so that it can be rotated. Further, the grip bar 29 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 engagement claw 27 and the top surface of the portion that is concave on the lower surface of the rear edge portion of the seat portion 13. The spring 31 constantly urges the operation handle 26 in a direction (downward) in which the grip bar 29 is separated from the handle 25. The operation handle 26 urged by the urging force of the spring 31 engages the engagement claw 27 with the lock bar 20.

Next, the backrest frame 10B will be described.
The backrest frame 10B includes a pair of left and right side frames 17A and an upper frame 17B that connects the upper ends of the side frames 17A. The pair of left and right side frames 17A and the upper frame 17B are formed by bending one pipe into a U-shape.
The backrest 14 is attached to the upper frame 17B. The backrest 14 may be fixed to the upper frame 17B, or may be pivotably attached. When the back pad 14 is attached to the upper frame 17B so as to be rotatable, an effect is obtained that the angle of the back pad 14 can be adjusted according to the physique of the user. The backrest 14 is provided with a gripping hole 14A, and the chair 10 can be moved or lifted using the gripping hole 14A.
The elbow rest 15 is attached to each of the left and right side frames 17A. The elbow rest 15 may be rotatably attached to the side frame 17A or may be fixed. When the elbow rest 15 is attached to the side frame 17A so as to be rotatable, when the cared person sits on the chair 10 or when the chair 10 is folded, the elbow rest 15 does not get in the way. There is an effect that it can be rotated to the left.

FIG. 5 is an enlarged perspective view showing the mounting portion of the chair, and FIG. 6A is a sectional view showing the mounting portion in an enlarged manner.
A waist pad is passed between the left and right plug cylinders 17. The waist rest includes a tube end cap 35 provided at the upper end of each insertion tube 17 and a waist rest 36 passed between the tube end caps 35 (see FIGS. 1 and 2). ). The tube end cap 35 and the waist rest 36 are integrally molded using a synthetic resin as a material, so that the number of parts can be reduced and the chair can be easily assembled. In addition, the waist pad 36 has the cared person's buttocks in the space between the back pad 14 and the seat 13 by the carer's hips being put on the waist pad 36 so that the cared person's hips It is prevented that the seat part 13 falls downward from the rear edge.

A pair of first insertion holes 37 are formed in the peripheral wall of the tube end cap 35 so as to have a long hole shape. A pair of second insertion holes 38 is formed at the upper end of the insertion tube 17. Each pair of the first insertion hole 37 and the second insertion hole 38 are arranged to face each other. Further, the tube end cap 35 is fitted to the upper end portion of the insertion tube 17 such that the second insertion hole 38 of the insertion tube 17 is positioned in the first insertion hole 37.
The side frame 17 </ b> A has a smaller diameter than the insertion tube 17 and is inserted into the insertion tube 17. A plurality of pairs of third insertion holes 39 are formed in the lower end portion of the side frame 17A so as to be aligned in the vertical direction. Each pair of third insertion holes 39 is disposed to face each other.

  In a state where the side frame 17A is inserted into the tube end cap 35 and the insertion tube 17, the first insertion hole 37, the second insertion hole 38, and the third insertion hole 39 are respectively aligned. Thus, the engagement bar 40 is inserted into the first insertion hole 37, the second insertion hole 38, and the third insertion hole 39. The engagement bar 40 is inserted into the first insertion hole 37, the second insertion hole 38, and the third insertion hole 39, whereby the tube end cap 35 or the side frame with respect to the insertion tube 17. 17A is retained. Further, with respect to the third insertion hole 39, the height of the backrest frame 10B can be adjusted by changing the hole into which the engagement bar 40 is inserted up and down.

A notch ring 41 is attached to the root end of the engagement bar 40. The notch ring 41 is formed in a C-shape by an elastic material such as a synthetic resin. The notch ring 41 is fitted into the first insertion hole 37 in a state where the engagement bar 40 is inserted through the first insertion hole 37, the second insertion hole 38, and the third insertion hole 39. Yes. Since the notch ring 41 has elasticity, it is fitted so as to tighten the peripheral surface of the insertion tube 17. The notch ring 41 restricts the engagement bar 40 from being extracted from the first insertion hole 37, the second insertion hole 38, and the third insertion hole 39. Unintentional detachment of the backrest frame 10B from the chair body 10A is prevented.
In addition, the step formed between the outer surface of the notch ring 41 and the outer surface of the tube end cap 35 is configured by fitting the notch ring 41 into the first insertion hole 37. , Has become a slight thing. For this reason, it becomes difficult for the force to try to pull out or rotate the notch ring 41 to the notch ring 41 with the step as a starting point, and the engagement bar 40 is further prevented from falling off. It can prevent suitably.
The first insertion hole 37 does not necessarily have to be configured as a through hole that opens one end and the other end in the same area as long as the cutout ring 41 can be fitted inside. For example, as shown in FIG. 6B, one end of the first insertion hole 37a is widely opened in accordance with the notch ring 41 so that the notch ring 41 can be fitted, and the other end of the first insertion hole 37a is formed by the engagement bar 40. You may comprise as what is called a bottomed hole open | released so narrowly that it was insertable.

  On the other hand, even when the side frame 17 </ b> A is not inserted into the tube end cap 35 and the insertion tube 17, the notch ring 41 is connected to the tube end cap 35 with respect to the insertion tube 17. Keeps it from falling out. That is, the notch ring 41 is fitted into the first insertion hole 37 of the tube end cap 35 and is fitted to the circumferential surface of the insertion tube 17. For this reason, even when the side frame 17A is not inserted into the tube end cap 35 and the insertion tube 17, the engagement bar 40 is inserted into the first insertion hole 37 and the second insertion hole 38. The tube end cap 35 is prevented from being pulled out by fitting the notch ring 41 into the first insertion hole 37 while being inserted.

  A chuck 42 is attached to the lower end of the side frame 17A. The chuck 42 is made of synthetic resin, and the lower half of the chuck 42 is formed to have a diameter larger than that of the side frame 17A and the same diameter as or slightly larger than the inner diameter of the insertion tube 17. When the side frame 17A is inserted into the plug-in cylinder 17, the chuck 42 presses the circumferential surface of the side frame 17A against the inner surface of the plug-in cylinder 17 so that the back frame 10B does not rattle against the chair body 10A. It is preventing.

7 and 8 are a front view and a side view of the chair body in a folded state in order.
The chair body 10A grasps the grip bar 29 together with the handle 25 of the seat portion 13 and holds and lifts the rear edge of the seat portion 13 with the handle 25, and the upper surface of the seat portion 13 becomes the front side. By rotating the seat portion 13 in this manner, the front leg portion 11 and the rear leg portion 12 can approach each other and can be folded by the action of the link 24. As a matter of course, the chair body 10A can be folded with the back frame 10B attached.

In the folded chair body 10A, the seat side frame portion 16 and the seat support frame portion 21 are pivotally attached to each other in the middle in the front-rear direction, so that the front leg portion 11 and the rear leg portion 12 are in between. It is arranged so that it is open and lined up in the front-rear direction, and can be made independent.
The chair body 10A in a folded state is carried by grasping the waist rest 36 or the handle 25. That is, the chair body 10A in the folded state is light in weight by the backrest frame 10B, and further, the length from the waistrest 36 or the handle 25 to the lower end of the front leg portion 11 or the rear leg portion 12. Is short, it is difficult for the front leg portion 11 or the rear leg portion 12 to touch the floor. Accordingly, even a person who is not strong, particularly a care recipient such as an elderly person or a disabled person, can easily lift the front leg part 11 or the rear leg part 12 so that the front leg part 11 or the rear leg part 12 does not touch the floor. You do not have to carry it while dragging it to the floor.
Further, even when the chair body 10A is carried by grasping the waist pad 36, the tube end cap 35 is attached to the first insertion hole 37 of the tube end cap 35 so that the tube end cap 35 is attached to the tube end cap 35. It is secured to the insertion tube 17 so that the chair body 10A can be carried stably.
Further, even when the chair 10 is in a state in which the backrest frame 10B is removed, the waist rest 36 is attached to the chair main body 10A. The person can be seated with stability and peace of mind.

In addition, the chair of this invention is not limited to the said embodiment, A waist rest may be provided between the lower ends of the side frames of a backrest frame, for example. In this case, the hip rest can be removed by removing the backrest frame.
Further, the mounting portion is not limited to being configured by the insertion tube of the embodiment, for example, an insertion tube is provided so as to protrude from the upper end of the tube end cap, and the insertion tube is placed in the side frame of the back frame. The mounting portion may be configured so as to be inserted.
Further, the chair may be configured by omitting the elbow rest 15.
Moreover, although it was set as the foldable chair in embodiment, the non-foldable chair by which the front leg and the rear leg were fixed to the lower surface of the seat part may be sufficient, for example.

The front view which shows the chair of embodiment. The rear view which shows the chair of embodiment. The bottom view which shows the chair of embodiment. The side sectional view showing the chair of an embodiment. The perspective view which shows the state which inserts a side frame in an insertion tube. (A) is sectional drawing which shows the state which inserted the side frame in the tube end cap of embodiment, (b) is sectional drawing which shows the state which inserted the side frame in the tube end cap of another form. The front view which shows the chair main body of the state folded. The side view which shows the chair main body of the state folded.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Chair 10A Chair main body 10B Backrest frame 11 Front leg part 12 Rear leg part 13 Seat part 14 Backrest 17 Plug cylinder 17A Side frame 35 Pipe end cap 36 Waist pad 37 1st insertion hole 38 2nd insertion hole 39 3rd insertion hole 40 Engagement bar 41 Notch ring 42 Chuck

Claims (5)

A chair with a U-shaped backrest frame established on the chair body provided with a seat,
The back frame has a pair of left and right side frames and a backrest,
A mounting portion for mounting the pair of left and right side frames is provided on the upper portion of the chair body, and the mounting portion is composed of a pair of left and right insertion tubes standing upright. A waist pad is passed between the pair of plugs,
The backrest frame is made detachable from the chair body by attaching the pair of left and right side frames to the mounting portion or by pulling the pair of left and right side frames upward from the mounting portion. Chair. A tube end cap to which a lower end portion of the side frame is fitted is provided at an upper end portion of the insertion tube, and insertion holes are provided in the tube end cap and the side frame, respectively. each insertion hole of the cap and the side frame after having aligned respective chair of claim 1 in which the engagement bar to these insertion holes is inserted. The chair according to claim 2 , wherein the tube end cap is integrated with the waist rest. The chair according to claim 2 or 3 , wherein an elastic notch ring for securing the tube end cap is attached to a root end of the engagement bar. The chair according to any one of claims 2 to 4, wherein a chuck made of synthetic resin for preventing rattling is attached to a lower end of the side frame.