JPH0418427Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a folding chair, and in particular, the left and right side frames forming the left and right legs on the front side and the upper frame part connecting the upper ends of these left and right side frames are made by bending a pipe material. A first frame is formed integrally with the upper end portions of the left and right side frames gently bent rearward; A back support member is provided in which the upper end and both left and right ends of the plate are fixed to the inner surface of the upper frame portion and the inner surface of the left and right side frame portions of the first frame, and a cushion member is fixed to the front surface of the arc-shaped back plate. Regarding folding chairs.

When this kind of conventional folding chair is represented in a drawing, as shown in Fig. 1, a first frame 1 formed in a ∩ shape with an open bottom side by bending a pipe, and a center of this first frame 1 are shown. A frame is made up of a second frame 2 made of a pipe in the shape of ∪ with an open upper surface side, which is rotatably pivoted on both sides of the section via connecting pieces 3, 3, and this second frame 2
A seat part 5 whose surface is covered with vinyl leather or the like is rotatably attached to the upper part of the first frame 1 and the center part of the first frame 1 using pins 6 and 7. 8, and a cushion member 9 whose surface is covered with vinyl leather or the like is fixed to the front surface of the back plate 8.

In this folding chair, the seat portion 5 is moved into the first frame 1 by grasping the front surface of the cushion member 9 and the rear surface of the back plate 8 with one hand and rotating the seat portion 5 in the direction of arrow A with the other hand. The second frame 2 is stored in a flush state, and the entire front top portion 2a of the second frame 2 is overlapped with the rear top portion 1b of the first frame 1 and folded.

Incidentally, the first frame 1 of such a folding chair is made of pipe material and is bent and formed to ensure ease of manufacture and robustness.

Further, the back plate 8 and the cushion member 9 are formed to bulge out in an arc shape toward the rear side, and the upper side and both left and right sides 9a, 9a of the cushion member 9 are connected to the first frame 1 as shown in FIGS. 1 and 2. It is made to protrude forward from the upper frame part and the left and right side frame parts.

However, in such folding chairs,
As shown in FIG. 1, each time the chair is put into the desk 30, the left and right sides 9a, 9a of the cushion member 9 come into contact with the edge 30a of the desk 30, and the surface covering material (for example, vinyl leather) of the cushion member 9 is exposed. There was a problem with it breaking in a short period of time. Such a problem also occurs when the folding chairs are folded and stored in multiple layers.

The present invention was developed in view of these circumstances, and its purpose is to provide a suitable folding chair that can solve the problem of the left and right sides of the cushion member being torn in a short period of time. It is about providing.

In order to achieve the above object, the present invention forms the left and right side frames, which are the left and right legs of the front side, and the upper frame part, which connects the upper ends of these left and right side frames, into one body by bending a pipe material. At the same time, there is a first frame formed by gently bending the upper ends of the left and right side frames to the rear side, and a front surface of the arc-shaped back plate that is fixed to the inner surfaces of the upper frame portions of the first frame and the inner surfaces of the left and right side frames. In the folding chair, a folding chair is provided with a backrest member formed by fixing a cushion member along the first frame, and a concave recessed portion is formed over a predetermined length on the upper inner surface side of the left and right side frame portions of the first frame. hand,
By fixing both left and right ends of the back plate to the recessed portions and fixing a cushion member to the front surface of the back plate, both left and right sides of the cushion member can be removed from the front surfaces of the left and right side frame portions of the first frame. It is constructed so that it does not stick out.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

In the figure, 10 is a folding chair. This folding chair 10 is of the same type as the conventional folding chair mentioned at the beginning, and includes a first frame 11 formed in a ∩ shape with an open bottom side by bending a pipe material, and A pivot 14a is rotatably mounted on both sides of the central portion via connecting pieces 13, 13,
A skeleton is made up of a second frame 12 made of a pipe with an open top side 14b, and pins 15a and 15b are attached to the upper part of the second frame 12 and the center of the first frame 11, and the surface is made of vinyl leather. The side surface of the seat part 16 covered with the seat part 16 is pivotally attached to the seat part 16, and a back support member 22 is further provided in the upper space of the first frame 11. This back support member 22 includes a back plate 1 that bulges out in an arc shape toward the rear.
A cushion member 20 whose surface is covered with vinyl leather 19 or the like is fixed along the front surface of the cushion member 7 with screws 21 or the like.

In addition, in FIG. 4, 11a and 11b are the left and right side frame portions of the first frame 11 which are the front legs, and in FIG. 3, 11c is the left and right side frame portions 11a and 11.
The left and right side frame portions 11 are the upper frame portions horizontally extending between the upper ends of b.
The upper end portions of a and 11b are gently bent toward the rear.

In such a folding chair 10, as shown in FIG.
1 and 11b1 are formed over a predetermined length by press working, and furthermore, a concave depression (not shown) is formed on the inner side of the upper frame portion 11c so as to be continuous with the depressions 11a1 and 11b1. It is formed by press working.

Then, as shown in FIG. 4, the left and right frame parts 1
Attachment pieces 17 formed at both left and right ends of the back plate 17 in the recessed parts 11a1 and 11b1 of 1a and 11b.
a, 17a are fixed by spot welding or screws, and the back plate 17 is attached to the recessed part of the upper frame part 11c.
A mounting piece (not shown) formed at the upper end is fixed by spot welding or screws, and the cushion member 20 is attached along the front surface of the back plate 17 with the screws 2.
By fixing the cushion member 20 with
The left and right sides 20a, 20a and the top side of
Front surfaces 11a' and 11b' of the left and right frame parts 11a and 11b of the frame 11 and the front surface 11 of the upper frame part 11c
It is configured so that it does not protrude from c'.

Reference numerals 18a and 18b are a cushion body such as urethane foam and hardboard that constitute the interior of the cushion member 20, and 19 is a surface covering material made of vinyl leather, vinyl sheet, cloth, etc. that covers the surface of the cushion body 18a. .

In addition, in the above embodiment, the left and right frame portions 11a,
A concave depression 11a1 on the inner surface side of the upper part of 11b,
11b1, but also a concave depression on the inner side of the upper frame portion 11c.
1, 11b1, but it is not necessarily necessary to form a recessed part on the inner side of the upper frame part 11c. This is the arrow P in Figure 3.
This is because, if the upper end portions of the left and right side frame portions 11a, 11b are gently bent rearward as shown in FIG.

According to the folding chair according to the present invention configured as described above, both the left and right sides of the cushion member 20 do not protrude from the front surfaces of the left and right side frame portions 11a and 11b of the first frame 11, so that the folding chair can be folded into a desk.
0, the left and right sides 20a, 20a of the cushion member 20 do not touch the edge 30a of the desk 30, and the problem of the surface covering material 19 of the cushion member 20 being torn can be solved.

Moreover, since both left and right ends of the back plate 17 are fixed to the concave recesses 11a1 and 11b1, when a person leans back, the recesses 11a1 and 11b1 resist the load received from the front side of the back plate 17. 11b1
will receive and support both left and right ends of the back plate 17, and by this receiving support and fixation, the back plate 1
7 can be stabilized in the attached state.

Furthermore, with the configuration of the present invention, the upper frame portion 11c of the first frame 11 can maintain a state of protruding rearward from the back plate 17, so that there is enough space for fingers to rest on the rear lower surface side of the upper frame portion 11c. Secured and easy to do when folding the folding chair,
When putting a folding chair in or taking it out from a desk, etc., you usually have to grab it, so it is easy to do this.
Without sacrificing any of the ease-of-use advantages of conventional folding chairs.

In addition, in the case of the present invention, the concave portions of the left and right frame portions 11a and 11b can be formed by simple pressing.
Since it can be formed on the upper inner surface side of the cushion member 20, there is an advantage that difficult machining and expensive equipment are not required in order to solve the problem of tearing of both the left and right side portions 20a, 20a of the cushion member 20.

[Brief explanation of the drawing]

1 and 2 show a conventional example, FIG. 1 is a side view of the folding chair, FIG. 2 is a cross-sectional view taken along the - line in FIG. One embodiment is shown, and FIG. 3 is a side view of a folding chair.
FIG. 4 is a cross-sectional view taken along - in FIG. 3. 10...Folding chair, 11...First frame,
11a, 11b...left and right frame portions, 11c...upper frame portion, 11a1, 11b1...concave portion, 17...
Back plate, 20...Cushion member, 20a, 20a
...Both left and right sides of the cushion member 20, 21...
Backrest member.

Claims (1)

[Scope of Claim for Utility Model Registration] The left and right side frames that form the left and right front legs and the upper frame that connects the upper ends of these left and right side frames are integrally formed by bending a pipe material. A first frame formed by gently bending the upper end of the frame toward the rear, and an upper end and both left and right ends of a back plate disposed in the upper space of the first frame and bulging out in an arc shape toward the rear. A folding chair comprising a backrest member fixed to the inner surface of the upper frame portion of the first frame and the inner surface of the left and right side frames, and a cushion member fixed to the front surface of the arcuate back plate thereof, A concave recessed portion is formed over a predetermined length on the upper inner surface side of the left and right side frame portions,
By fixing both left and right ends of the back plate to the recessed portions and fixing a cushion member to the front surface of the back plate, both left and right sides of the cushion member can be removed from the front surfaces of the left and right side frame portions of the first frame. A folding chair characterized by being configured so that it does not protrude.