JPH0418428Y2 - - 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 portion connecting the upper ends of these left and right side frames are made by bending a pipe material. a first frame which is formed integrally with the left and right side frame portions and is formed by gently bending the upper portions of the left and right side frame portions toward the rear; and a back plate which is disposed in the upper space of the first frame and bulges out in an arc shape toward the rear. The back support member has an upper end portion and both left and right end portions 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 along 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 parts of the left and right side frame parts to the rear side, and an upper end part of the back plate arranged in the upper space of the first frame and bulging out in an arc shape to the rear side, and the left and right parts. In the folding chair, the folding chair is equipped with a backrest member having both ends fixed to the inner surface of the upper frame portion and the inner surface of the left and right side frames of the first frame, and a cushion member fixed to the front surface of the arcuate back plate. Both left and right ends of the back plate are fixed to positions on the inner inner surfaces of the left and right side frames where the left and right sides of the cushion member fixed along the front surface of the back plate do not protrude from the front faces of the left and right side frames, and A cushion member is fixed to the front surface of the back plate so that both left and right side portions of the cushion member do not protrude from the front surface of the left and right side frame portions of the first frame.

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 has a first frame 1 formed in a ∩ shape with an open bottom side by bending a pipe material.
1, and pivotably mounted 14a, 1 on both sides of the central part of the first frame 11 via connecting pieces 13, 13.
A frame is formed from a second frame 12 made of a pipe and having an open upper surface side.
A side part of a seat part 16 whose surface is covered with vinyl leather or the like is rotatably attached to the upper part of the frame 12 and the center part of the first frame 11 using pins 15a and 15b. A back support member 22 is disposed in the upper space.

This back support member 22 is constructed by screwing a cushion member 20 whose surface is covered with vinyl leather 19 or the like along the front surface of a back plate 17 that bulges out in an arc shape toward the rear.
It is fixed at the 1st class.

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 portions of a and 11b are gently bent toward the rear.

In such a folding chair 10, the back plate 17
The left and right end portions 17a, 17a are the right and left side portions 20a, 20 of the cushion member 20 fixed along the front surface of the back plate 17, as shown in FIGS. 3 and 4.
a is the front surface 11a', 1 of the left and right side frame parts 11a, 11b
The cushion member 20 is fixed by spot welding or screws to the inner surface position that does not protrude from the back plate 1b', and the cushion member 20 is fixed to the front surface of the back plate 17 with screws 21, etc., so that the left and right sides 20a, 20a of the cushion member 20 are fixed to the left and right sides. Front surfaces 11a', 11 of frame parts 11a, 11b
Furthermore, the upper end of the back plate 17 is configured so that the upper side (not shown) of the cushion member 20 fixed along the front surface of the back plate 17 is above the first frame 11. It is fixed by spot welding or screws to the inner side surface position of the upper frame part 11c that does not protrude from the front surface 11c' of the frame part 11c,
The upper side portion of the cushion member 20 fixed along the front surface of the back plate 17 with screws 21 or the like is configured not to protrude from the front surface 11'c of the upper frame portion 11c.

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, or cloth that covers the surface of the cushion body 18a.

In the above embodiment, the left and right end portions 17a, 17a and the upper end portion of the back plate 17 are connected to the left and right side frame portions 11.
both left and right side portions 20a, 20a of the cushion member 20 that are fixed to the inner side surfaces of the upper frame portion 11c and the upper frame portion 11c, and are fixed along the front surface of the back plate 17;
Although the upper sides are configured so as not to protrude from the front surfaces 11a', 11b', 11c' of the left and right side frames 11a, 11b and the upper side 11c, for example, only contact with the edge 30a of the desk 30 can be avoided. If desired, it is sufficient to fix only the left and right side portions 17a, 17a of the back plate 17 to the inner side surface position.

According to the folding chair according to the present invention configured as described above, both the left and right sides 20 of the cushion member 20
a, 20a are the left and right side frame parts 1 of the first frame 11
1a, 11b does not protrude from the front surfaces 11a', 11b', so when this folding chair is put into the desk 30, both left and right sides 20a, 2 of the cushion member 20
0a does not hit the edge 30a of the desk 30, and the problem of tearing of the surface covering material 19 of the cushion member 20 can be solved.

Moreover, 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 catch on the rear lower surface side of the upper frame portion 11c. It is easy to fold the folding chair, and it is also easy to put the folding chair in and out of a desk etc. because you usually hold it there, and it is easy to use the conventional folding chair. without detracting from the advantages of

Further, in the case of the present invention, there is no need to specially process the first frame 11 in order to prevent the left and right sides 20a, 20a of the cushion member 20 from protruding, and therefore there is no need to introduce expensive processing equipment. Furthermore, it has the advantage of being very easy to adapt in practice to the conventional type of folding chair mentioned above.

[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 of 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 side frame parts, 11c...Upper frame part, 17...Back plate, 20...Cushion member,
20a, 20a...Both left and right sides of the cushion member 20, 21...Back support 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 part of the frame toward the rear side, and a back plate arranged in the upper space of the first frame and bulging out in an arc shape toward the rear side. A folding chair comprising a backrest member fixed to the inner side surface of the upper frame portion and the inner side surface of the left and right side frames of one frame, and a cushion member fixed to the front side of the arcuate back plate, the front side of the back plate. Both left and right ends of the back plate are fixed to positions on the inner side surfaces of the left and right side frames where the left and right sides of the cushion members fixed along the sides do not protrude from the front surfaces of the left and right side frames, and the left and right ends of the back plate are fixed along the A folding chair characterized in that a cushion member is fixed to the cushion member so that both left and right side portions of the cushion member do not protrude from the front surface of the left and right side frame portions of the first frame.