JPH0511855U - Folding chair - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a folding chair that is extremely stable and does not become unstable even when weight is moved on a seat. [Structure] A pair of left and right first and second frames 1 and 2 extending along a slidable vertical surface composed of upper halves 11 and 21 and lower halves 12 and 22, and between these frames 1 and 2. The X-shaped front view connecting mechanism 7 and the upper half body 11, which are connected to each other,
21 and one of the lower halves 12, 22 are stoppers 6 for preventing further entry in a set state where one of the lower halves 12, 22 has entered the other hollow portion, and the grounding portions 14, 2 provided on the lower halves 12, 22.
4 and receives the load of the occupant sitting on the seat 3 as a vertical load at each of the ground contact portions 14 and 24.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a folding chair with excellent stability used in outdoor camping and the like.

[0002]

[Prior Art]

 Conventionally, as this type of folding chair, for example, the one disclosed in Japanese Utility Model Laid-Open No. 1-81948 is known. As shown in FIG. Using a pair of first and second frames 51, 52, these frames 51, 52 are crossed so as to form an X-shape in a front view, and the crossing portions are rotatably connected via a pivot shaft 53. In addition, the lower side of both the frames 51 and 52 serves as the grounding portion 54 when in use, and the upper seats of the both frames 51 and 52 are connected to the seat seat supporting portion 56 via the support fittings 55, respectively. A foldable armrest 57 is provided, a seat 58 is supported between the support portions 56, and a backrest seat support portion 59 is provided on the upper rear side of the armrest 57 so as to be foldable. Support 60 It is caused.

When the above folding chair is used, as shown in the figure, the frames 51 and 52 are centered on the pivot shaft 53, and the upper and lower parts thereof are widened outward. And the armrest 57 and the backrest seat 60 are vertically erected so that they can be seated on the seat 58. The load at this time is received by the grounding portions 54 of both the frames 51 and 52. When not in use, the frames 51 and 52 are folded so as to be vertically aligned (standing up) around the pivot shaft 53, and the armrest 57 and the backrest sheet 60 are respectively connected to the frames. It is folded with respect to 51 and 52.

[0004]

[Problems to be solved by the device]

 However, when the folding chair is used, the load of the occupant seated on the seat 58 is directly applied to both the frames rotatably connected by the pivot shaft 53 when the chair is used. There was a problem that when a person moved their weight, they became unstable and they were uncomfortable to sit on.

The present invention has been made in view of the above problems, and an object thereof is to prevent the occupant sitting on the seat sheet from becoming unstable even if he / she shifts his / her weight. It is to provide a folding chair that is extremely excellent in sitting comfort.

[0006]

[Means for Solving the Problems]

 The folding chair according to the present invention firstly extends along a substantially vertical surface, and a pair of left and right halves is formed by slidably fitting one of the upper half body 11 and 21 and the lower half body 12 and 22 into the other hollow portion. It is provided with first and second frames 1 and 2, and a connecting mechanism 7 that connects the frames 1 and 2 in the slidable state. The connecting mechanism 7 includes a first connecting bar 71 connecting the upper half 11 of the first frame 1 and the lower half 22 of the second frame 2, the upper half 21 of the second frame 2 and the first frame 1. A second connecting bar 72 connecting the lower half body 12 is connected to the second connecting bar 72 at the center thereof so as to be relatively rotatable about a horizontal axis, and has a front X shape. Further, a stopper means 6 for preventing further intrusion in a set state in which one of the upper half body 11, 21 and the lower half body 12, 22 has entered the other hollow part, and the lower half body 12, 22 are provided. The grounding portions 14 and 24, the armrests 16 and 26 and the seat seat supporting portions 17 and 27 provided on the upper half bodies 11 and 21, and the seat seat supporting portions 17 and 27 are bridged. A foldable seat 3 and a pair of left and right backrest seat support portions 18 and 28 provided on both the frames 1 and 2 and the backrest seat support portions 18 and 28. It is equipped with a foldable backrest sheet 5.

[0007]

[Action]

 When using the folding chair described above, first, slide one of the upper halves 11 and 21 and the lower halves 12 and 22 of the frames 1 and 2 into the hollow portion of the other side while advancing them. By holding the stopper means 6 in a set state in which it is prevented from further entering, the connecting bars 71 and 72 constituting the connecting mechanism 7 are widened to have an X-shape when viewed from the front. The two seats 1 and 2 are held at a predetermined width interval, the seat 3 is tensioned between the seat support portions 17 and 27, and the backrest seat 5 is attached to the backrest seat 5. The seat supporting portions 18 and 28 are stretched in a tension state. Then, an elbow is placed on the armrests 16 and 26, and the backrest seat 5 is seated on the seat 3 while the back is put on the seat. At this time, the load of the occupant seated on the seat 3 is received as a vertical load by the frames 1 and 2. In other words, the load of the occupant is not unstable due to rotation or the like, but is applied to both of the frames 1 and 2 extending substantially along the vertical plane, and the ground contact portions 14 and 24 provide vertical load. Can be received stably. Therefore, even when the occupant moves his / her weight on the seat 3, the seat is not unstable and the stability is extremely excellent, and the sitting comfort is good. It

When the folding chair is folded when not in use, from the above set state, for example, while stepping on the lower half body 12 of one frame 1, lift the upper half body 11 by hand. By sliding it upward, the connecting bars 71, 72 of the connecting mechanism 7 are folded in the vertical direction so as to have a narrow width interval, while the frames 1, 2 are folded in a narrow width interval. Along with this, the seat 3 and the backrest sheet 5 are also folded, so that the whole is thin and compact.

[0009]

【Example】

 Hereinafter, a folding chair according to the present invention will be described based on an embodiment shown in the drawings. FIG. 1 shows an embodiment of a folding chair. In this figure, reference numerals 1 and 2 denote a pair of left and right first and second frames extending substantially along a vertical plane, which are metal round pipes coated with resin. The upper halves 11 and 21 and the lower halves 12 and 22 are made of, and the insertion rods 11a and 21a are attached to the lower end portions of the respective upper halves 11 and 21 to insert the insertion rods 11a and 21a. Is slidably inserted into the hollow portion of each of the lower half bodies 12 and 22.

Further, T-shaped connectors 13 and 23 are attached to the lower portions of the lower halves 12 and 22 of the frames 1 and 2, respectively. The connecting tools 13 and 23 include first vertical cylinder portions 13a and 23a fixed to the lower end portions of the lower halves 12 and 22, and second horizontal cylinder portions 13a and 23a connected to the second horizontal portions. It is composed of cylindrical portions 13b and 23b. At the lower ends of the first tubular portions 13a, 23a of the connecting tools 13, 23, grounding portions 14, 24 made of an elastic material that come into contact with the ground are attached, respectively, and between the second tubular portions 13b, 23b facing in the front-rear direction. Then, connecting rods 15 and 25 made of metal round pipes are installed so as to connect the front and rear of the lower half bodies 12 and 23, respectively.

Then, on the upper side of each of the upper halves 11 and 21 of the frames 1 and 2, the upper and lower halves 11 and 21 extend in the front-rear direction so that the overall appearance of each of the upper halves 11 and 21 has a substantially inverted U shape. The armrests 16 and 26 are integrally formed, and armrests 16a and 26a are attached to the middle portions of the armrests 16 and 26 in the longitudinal direction. Further, on the lower side of each of the upper half bodies 11 and 21, seat seat supporting portions 17 and 27 made of a metal circular pipe that extend horizontally are installed respectively, and a skin is provided between the supporting portions 17 and 27. A foldable seat 3 made of nylon, nylon mesh, etc. is bridged in the left-right direction. The seat 3 is provided with sponge cushion portions 3a, 3a on the left and right sides, respectively, so that the sitting comfort is good.

Further, a pair of left and right backrest seat support portions 18 and 28 extending in the vertical direction via the connecting tool 4 are attached behind the lower half bodies 12 and 22, respectively. A foldable backrest sheet 5 made of leather or nylon mesh is laid across the upper part of the seat in the left-right direction. The connecting tool 4 is composed of two split members 41, 42 formed by injection molding or the like, and the lower half bodies 12, 22 and the spine members are respectively provided on the inner surface sides of the members 41, 42 facing each other. Two receiving holes having a semicircular arc shape capable of receiving the seat supporting portions 18, 28 are formed, and the lower halves 12, 22 and the backrest seat supporting portions 18, 28 are formed in the receiving holes, respectively. The upper and lower parts of the respective members 41, 42 are fixed with rivets or screws 43 in a state in which the respective members 41, 42 are interposed, so that the lower half bodies 12, 22 and the backrest seat supporting portions 18, 28 are Are connected. Also, the backrest seat 5 is provided with sponge cushion portions 5a, 5a on both sides in the left-right direction, similarly to the seat 3 described above, so that the sitting comfort is good.

In addition, between the upper halves 11 and 21 and the lower halves 12 and 22 of the frames 1 and 2, the insertion rods 11a and 21a provided on the upper halves 11 and 21 side, respectively. A stopper means 6 is provided to prevent the above-mentioned lower half bodies 12, 22 from entering a predetermined amount or more. As the stopper means 6, in the illustrated embodiment, the pipe diameters of the upper half bodies 11 and 21 and the lower half bodies 12 and 22 are formed to have substantially the same size, and the stopper rods 6 of the insertion rods 11a and 21a are formed. At the time of insertion into the lower halves 12 and 22, the lower ends of the upper halves 11 and 21 are brought into contact with the upper ends of the lower halves 12 and 22, respectively, so that the insertion rods 11a and 21a of The lower half bodies 12, 22 are prevented from entering a predetermined amount or more.

As the stopper means 6, a stopper metal fitting made of a separate member is used, and the stopper metal fitting is arranged between the constituent members of the coupling mechanism 7 which will be described in detail later. Can be adopted.

A connecting mechanism 7 for connecting the frames 1 and 2 is provided between the frames 1 and 2. The connecting mechanism 7 connects between a seat seat support portion 17 provided between the upper half bodies 11 of the first frame 1 and a connecting rod 25 provided on the lower half body 22 of the second frame 2. The first connecting bar 71, the seat seat support portion 27 provided on the upper half body 21 of the second frame 2 and the connecting rod 15 provided on the lower half body 12 of the first frame 1 are connected. A second connecting bar 72 is provided, and central portions in the length direction of the first and second connecting bars 71, 72 are connected to each other by a pivot shaft 73 extending in the horizontal direction so as to be relatively rotatable.

More specifically, the seat seat support portion 17 of the first frame 1, the connecting rod 25 of the second frame 2, the seat seat support portion 27 of the second frame 2, and the first frame 1 of the first frame 1. A hinge metal fitting 8 is attached to each intermediate portion in the longitudinal direction of the connecting rod 15, and the first and second connecting bars 71, 72 are respectively supported in an intersecting manner through the respective hinge metal fittings 8, and the intersecting portion thereof. Are connected by the pivot shaft 73. Further, each of the hinge fittings 8 includes a bifurcated support portion 81 that rotatably supports the ends of the coupling bars 71 and 72, and a mounting portion 82 in the shape of a semicircle. The mounting portion 82 is fixed to the seat seat supporting portions 17 and 27 and the connecting rods 15 and 25 via a plurality of screws 83.

FIG. 2 shows another embodiment according to the present invention. The difference between the folding chair shown in FIG. 2 and that shown in FIG. 1 is that the upper halves 11 and 21 of both frames 1 and 2 are different. Each has a structure in which the rear vertical pipes 11B and 21B are welded to the L-shaped pipes 11A and 21A forming the armrests 16 and 26, and on the upper side of the vertical pipes 11B and 21B, The backrest seat support portions 18 and 28 are foldably attached via the pivots 9 and 9, and other configurations are the same.

Next, the operation of the folding chair configured as described above will be described with reference to FIGS. 3 and 4. First, when setting to the use state, as shown in FIG. 3, the insertion rods 11a and 21a provided on the upper half bodies 11 and 21 side of the frames 1 and 2 are replaced with the lower half bodies 12 respectively. , 22 are slid into the hollow portion, and the stopper means 6 keeps the stopper member 6 in a set state in which it is prevented from further entering. As a result, the first and second connecting bars 71, 72 constituting the connecting mechanism 7 are pivoted outwardly about the pivot shaft 73, and the connecting bars 71, 72 are widened to be viewed from the front. It becomes X-shaped, and the two frames 1 and 2 are held at a predetermined lateral width interval through the connecting bars 71 and 72. Further, the seat seat supporting portions 17, 27 and the backrest seat supporting portions 18, 28 are held at predetermined lateral intervals via the frames 1 and 2, respectively, and the seat seat supporting portions 17, 27 are In between, the seat 3 and the backrest seat 5 are tensioned between the backrest seat support portions 18 and 28, respectively.

Then, while sitting on the seat 3 while holding the elbows on the armrests 16 and 26 and putting the back against the backrest seat 5, at this time, the seat 3 is seated. The load of the sitting occupant is received as a vertical load by both the frames 1 and 2. That is, the load of the occupant is not unstable as it is rotated as in the conventional case, but is applied to both the frames 1 and 2 extending substantially along the vertical surface, and the grounding portions 14 and 24 vertically It can be stably received as a load. For this reason, even when the occupant moves his / her weight on the seat 3, the seat is not unstable and the stability is extremely excellent and the sitting comfort is good.

Further, when the folding chair is folded when not in use, from the above set state, for example, while stepping on the connecting rod 15 of the lower half 12 of the one frame 1 with the foot, the armrest of the upper half 11 is rested. When the part 16 is lifted by hand, the insertion rods 11a and 21a slide upward with respect to the lower halves 12 and 22 in the separating direction. As a result, as shown in FIG. 4, the connecting bars 71, 72 of the connecting mechanism 7 are folded in the vertical direction so as to have a narrow width interval. The seats 3 and the backrest seats 5 are also folded so that the folds 1 and 2 are folded in a narrow width interval, and the whole is thin and compact.

Further, in the folding chair shown in FIG. 2, since the backrest seat supporting portions 18 and 28 described above are supported on the upper sides of the frames 1 and 2, the upper half bodies 11 and When the frames 1 and 2 are folded while sliding 21 upward, the backrest seat support portions 18 and 28 project above the upper halves 11 and 21, and the folding heights of the frames 1 and 2 in the vertical direction are increased. Becomes higher. Therefore, since the upper half bodies 11 and 21 and the backrest seat support portions 18 and 28 are foldably supported via the pivot shafts 9 and 9, respectively. By horizontally bending the backrest seat support portions 18 and 28 around 9 and 9 toward the upper half bodies 11 and 21 (front side), the frames 1 and 2 can be folded compactly. it can.

The insertion rods 11a and 21a are attached to the upper sides of the lower halves 12 and 22, respectively, and the insertion rods 11a and 21a are placed in the hollow portions of the upper halves 11 and 21, respectively. It may be inserted so that it can slide.

[0023]

[Effect of the device]

 As described above, according to the folding chair according to the present invention, the load of the occupant sitting on the seat 3 is set to the ground of each of the lower halves 12 and 22 of the first and second frames 1 and 2. The portions 14 and 24 can receive the vertical load as a vertical load, that is, the load of the occupant can be applied to both the frames 1 and 2 extending along a substantially vertical plane and the ground contact portions 14 and 24 can stably receive the vertical load. Therefore, even if the occupant moves his / her weight on the seat 3 above, the seat occupant does not become unstable and the stability is extremely excellent and the sitting comfort is good. can do.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a folding chair according to the present invention.

FIG. 2 is a perspective view showing another embodiment.

FIG. 3 is a front view showing a use state of the folding chair.

FIG. 4 is a front view showing a folded state of the folding chair.

FIG. 5 is a perspective view showing a conventional example of a folding chair.

[Explanation of symbols]

1 ... 1st frame, 2 ... 2nd frame, 11, 12 ... upper half body, 12, 13 ... lower half body, 14, 15 ... grounding part, 1
6, 26 ... Armrest part, 17, 27 ... Seat seat support part,
18, 28 ... Backrest seat support, 3 ... Seat, 5 ...
Backrest sheet, 6 ... Stopper means, 7 ... Connection mechanism, 71 ...
First connection bar, 72 ... Second connection bar, 73 ... Pivot shaft.

Claims (1)

[Scope of utility model registration request] 1. An upper half 11, extending along a substantially vertical plane,
21 and a pair of left and right first and second frames 1 and 2 in which one of the lower half bodies 12 and 22 is slidably fitted in the hollow portion of the other, and the upper half body 11 and the second half of the first frame 1 A first connecting bar 71 that connects the lower half body 22 of the frame 2 and a second connecting bar 72 that connects the upper half body 21 of the second frame 2 and the lower half body 12 of the first frame 1 are provided at the center thereof. A connecting mechanism 7 which is connected to be rotatable relative to a horizontal axis, has an X-shape in the front, and connects the frames 1 and 2 in the slidable state, and the upper half body 11 and the lower half body. Stopper means 6 for preventing further intrusion in the set state in which one of the two 12, 22 has entered the hollow portion of the other, and the grounding portions 14, 24 provided in the lower half bodies 12, 22.
And armrests 16, 26 provided on the upper halves 11, 21
And seat seat support portions 17 and 27, a foldable seat seat 3 laid between the seat seat support portions 17 and 27, and a pair of left and right backrest seat supports provided on the frames 1 and 2. A foldable chair comprising parts 18 and 28 and a foldable backrest seat 5 laid between the backrest seat support parts 18 and 28.