JPH06269331A - Foldable chair - Google Patents

Abstract

PURPOSE:To prevent a side slip from generating even when a large number of folded chairs are stacked by providing the chair with a movement prohibiting means which is fixed on the surface of a covering means and prohibits the movement in the lateral direction of the front leg and hind leg which are stacked on the surface. CONSTITUTION:The foldable chair consists of a front leg 1, rear leg 2 and seat 3, and can be folded into an approx. flat surface. A connecting mechanism 4 which turns the hind leg 2 and seat 3 to each other is installed. On the connecting mechanism 4, a detachable connecting fitting cover 5 as a means to cover the connecting mechanism 4 is set. When the connecting fitting cover 5 is fitted, a side slip of the front leg 1 and hind leg 2 which are stacked is prevented from happening by providing a protruding strap 6 on the surface 5a, which becomes the rear surface side, of the connecting fitting cover 5. By this method, the folded chairs can be stacked in multistages without collapsing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding chair which can be folded and stacked.

[0002]

2. Description of the Related Art As a folding chair of this type, for example,
A metal pipe is molded into a substantially U-shape, and a front leg having an open end attached to the backrest, a rear leg formed by molding a metal pipe into a substantially U-shape, and pivotally supported by the front and rear legs. It is known that the front leg, the rear leg, and the seat can be folded in a substantially planar manner by the front leg and the rear leg approaching each other.

[0003]

However, with the above-mentioned structure, since it can be folded and stacked in a plane when it is not used, it has an advantage that it requires less storage space than other chairs which cannot be folded. However, since such front legs and rear legs are formed of metal pipes, they are slippery even when they are in contact with each other when stacked, and there is a risk of misalignment when stacked in large numbers. is there. That is, since the above can be folded in a plane, the chair does not have a shape that is flat in the folded state and can engage with each other, and the chair itself can prevent displacement. Does not have. The present invention aims to solve such a problem.

[0004]

The present invention takes the following means in order to achieve such an object. That is, the folding chair according to the present invention has front legs and
A rear leg and a seat are configured to be able to be folded in a substantially planar manner, and a connecting means for rotatably connecting the rear leg and the seat to each other and detachably attached to the connecting means. Covering means for covering the connecting means, and movement preventing means for prohibiting lateral movement of the front leg and the rear leg which are provided on the surface of the covering means on the back side when mounted and are stacked on the surface. It is characterized by comprising and.

In order to prevent movement of the front leg and the rear leg that are reliably stacked with a simple structure, the movement inhibiting means can be inserted into the gap between the front leg and the rear leg in the folded state. Those consisting of are preferred.

[0006]

With such a structure, when folded up in a plane and piled up, the front and rear legs of the upper chair come into contact with the rear surface of the covering means. Lateral movement of the rear leg and the rear leg is prohibited by the movement prohibiting means. Therefore, even if a large number of chairs are stacked, it is possible to effectively prevent the lateral shift from occurring and prevent the stacked state from collapsing.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The folding chair 100 shown in FIG. 1 is configured so that the front leg 1, the rear leg 2, and the seat 3 can be folded in a substantially planar manner, and the rear leg 2 and the seat 3 can rotate relative to each other. A connecting mechanism 4 as a connecting means, a connecting metal cover 5 as a covering means that is detachably attached to the connecting mechanism 4 and covers the connecting mechanism 4, and a connecting metal cover that becomes a back side when attached. 5, which is provided on the surface 5a of the
The front leg 1 and the rear leg 2 stacked on a are provided with a ridge 6 as a movement inhibiting means for inhibiting the lateral movement of the front leg 1 and the rear leg 2.

The front leg 1 and the rear leg 2 are formed by bending a steel pipe into a substantially U shape, and have base rods 11 and 21 placed parallel to the floor surface. Base rod 2 of rear leg 2
In order to improve stability when using a chair,
A slide prevention member 7 made of synthetic resin and having a shape obtained by cutting a part of a cylindrical shape with a predetermined width in the central axis direction is attached. The front leg 1 and the rear leg 2 are rotatably connected to the side surface 31 of the seat 3 at the respective tilt rods 12 and 22, and rotatably support the seat 3.

That is, the front leg 1 is pivotally mounted on the side surface 31 of the seat 3 so that the middle of the left and right tilting rods 12 is slightly rearward of the middle of the seat 3 in the depth direction. In this shaft-mounted structure, a gap is formed between the front leg 1 and the side surface 31 of the seat 3 so that the seat 3 can smoothly rotate. At the open end of the front leg 1, that is, at the uppermost end of the inclined rod 12, there is attached a backrest 8 which is curved rearward so as to fit the shape of the back. In such a backrest 8, when it is folded, its curved rear surface 8a has front legs 1, rear legs 2 and a seat 3
Will project rearward from the plane containing the. Further, the rear leg 2 has a structure in which the length of the tilting rod 22 can be varied so that the length of the tilted portion becomes long when folded, and the upper end 2
3 is axially attached to the lower side of the backrest 8 of the front leg 1 from the outside of the front leg 1, and the connecting mechanism 4 is attached to the left and right side surfaces 31a near the rear edge 32 of the seat 3 at a portion slightly lower than the upper end 23. It is rotatably connected via.

In this connecting mechanism 4, one end 41a side is bent according to the angle of the rear leg with respect to the floor surface, and the other end 41b is formed according to the outer shape of the rear leg 2.
It is composed of a connecting fitting 41 which is L-shaped as a whole, and a shaft fitting 42 whose one end 41a is pivotally mounted on the side surface 31 of the seat 3. Then, this connecting bracket 41
Is to connect the rear leg 2 and the seat 3 so as to straddle the front leg 1, that is, to arrange the rear leg 2 on the outside of the front leg 1, and one end portion 41a of the rear leg 2 and the seat 3 is fixed by the shaft metal fitting 42. The other end 41b is connected to the side surface 31 of the seat 3 and is fixed to the rear surface side of the inclined rod 22 of the rear leg 2 by welding. One end 4
The shaft 1a is mounted on the shaft 1a with a gap therebetween so as not to contact the front leg 1. In addition to this, the length of the connecting fitting 41 is dimensioned so that a gap g is also formed between the front leg 1 and the rear leg 2, and by adopting such a structure, the front leg 1 and the rear leg 2 The seat 3 and the seat 3 come to lie substantially in the same plane when folded.

The connecting fitting 41 of the connecting mechanism 4 is detachably attached with a connecting fitting cover 5 which covers the entire connecting fitting 41 so as to cover the welded portion of the connecting fitting 41. The connecting fitting cover 5 is made of synthetic resin and is formed to fit the outer shape of the connecting fitting 41.
A ridge 6 is integrally formed on the connecting metal cover 5.
The ridge 6 has a shape that can be inserted into the gap g between the front leg 1 and the rear leg 2 in the folded state, and is formed at a position corresponding to the gap g. That is, when the folding chair 100 is folded, the ridges 6 form the seating surface 3 of the seat 3.
It is formed on the surface 5a of the connecting fitting cover 5 that faces in the same direction as a, and has a substantially trapezoidal cross-sectional shape that is long in the axial direction of the tilting rod 22 of the rear leg 2. In addition to having a concave shape according to the shape of the legs 2,
It is located on the extension of the gap g between the front leg 1 and the rear leg 2.

In such a structure, when the seat 3 that has been folded during storage is pushed open in the front-lower direction during use, the front leg 1 and the rear leg 2 are greatly opened in the front-rear direction and the seat 3 is brought into a substantially horizontal state. It becomes a form to hold. In this usage state,
The anti-slip member 7 of the base rod 21 of the rear leg 2 which is opened prevents the base rod 21 from sliding rearward when the lower surface of the base rod 21 comes into contact with the floor surface and a force pushing the seat 3 backward is applied. is doing.

On the other hand, the folding chair 10 for storage.
When 0 is folded, the front leg 1, the rear leg 2, and the seat 3 are located in substantially the same plane, and the rear surface 8a of the backrest 8 projects rearward from the front leg 1. Then, when the folded chairs 100 are placed on the floor so as to be stacked, the connecting fitting cover 5 faces upward. On the other hand, at the position corresponding to the connecting fitting cover 5 on the lower surface of the stacking chair 100, the connecting fitting 41
Although one end 41a of the first leg is slightly exposed, the tilting rods 12 and 22 of the front leg 1 and the rear leg 2 are only positioned with a predetermined gap. Then, on the first folding chair 100a placed on the floor surface, the front legs 1 and the rear legs 2 are directly overlaid on each other in the left-right direction, and in the front-back direction. When the second folding chair 100b is placed so that the base rods 21 of the rear legs 2 are directly overlaid on each other, the gaps between the inclined rods 12 and 22 of the front legs 1 and the rear legs 2 of the second folding chair 100b are placed. to g,
The ridge 6 on the surface 5a of the coupling fitting cover 5 is inserted. In this state, the second folding chair 1 is higher than the height of the ridge 6.
As long as the whole 00b does not float, the tilt rods 12 and 22 of the front leg 1 and the rear leg 2 on the left and right of the seat 3 are
The ridges 6 prohibit the lateral movement of the folding chair 100b, and thus prohibit the lateral movement of the entire folding chair 100b.

In this way, the ridges 6 of the connecting fitting cover 5 are inserted into the gap g between the slant rods 12 and 22 of the front leg 1 and the rear leg 2 of the folding chair 100 to be stacked thereon, and a large number of them are inserted. Even when the folding chairs 100 are stacked, since the folding chairs 100 are prohibited from moving in the left-right direction at the position of the coupling fitting cover 5, stacking does not easily collapse in the left-right direction. The backrests 8 are in contact with each other with respect to the movement in the front-rear direction, so that the movement is prohibited, but in order to make this more reliable, the surface 5a on which the projection 6 of the coupling fitting cover 5 is provided. In addition, an engaging recess that engages with one end 41 a of the connecting fitting 41 of the folding chair 100 to be stacked on top or with the one end 41 a and the shaft fitting 42 may be provided. That is, in such an engaging recess, one end 41a to be engaged is positioned in parallel with the central axis of the tilting rod 22, so that both sides of this one end 41a are connected to the central axis of the tilting rod 22. Any shape may be used as long as it is formed in a shape that engages so as to hold in the direction. In this way, if the left and right movements in the front and rear are prohibited at the position of the connecting metal cover 5, they will not be collapsed even if a large number of them are stacked, the storage space can be saved, and the safety when stacked and stored. Can be improved.

The present invention is not limited to the embodiment described above. For example, as a movement prohibition means,
In addition to the ridges 6 described in the above embodiment, concave grooves may be provided corresponding to the outer shapes of the inclined rods 12 and 22 of the front leg 1 and the rear leg 2, respectively. That is, if the inclined rods 12 and 22 are round pipes as in the above embodiment, the concave groove is
The cross section is formed so as to have a semicircular shape, and the slant rod 12,
If 22 is a square pipe, it may be formed to have a cross-sectional shape that is substantially the same as the cross-sectional shape of the square pipe. Other,
The configuration of each unit is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[0016]

INDUSTRIAL APPLICABILITY As described in detail above, according to the present invention, by folding and sequentially stacking the ridges on the surface of the covering means, the protrusions are provided in the gap between the front and rear legs. Since it is inserted, it is possible to easily prevent the front leg and the rear leg from moving in the left-right direction from the stacked state, and it is possible to reliably prevent the one stacked on top from slipping off.

[Brief description of drawings]

FIG. 1 is a rear perspective view showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a connecting fitting cover of the embodiment.

FIG. 3 is a top view of the same embodiment in a folded state.

FIG. 4 is a bottom view of the same embodiment in a folded state.

FIG. 5 is a perspective view showing a folded and stacked state of the embodiment.

FIG. 6 is a cross-sectional view of a main part of the same embodiment in a folded and stacked state.

[Explanation of symbols]

 1 ... front leg 2 ... rear leg 3 ... seat 4 ... coupling mechanism 5 ... coupling fitting cover 6 ... projection 41 ... coupling fitting 42 ... shaft fitting g ... gap

Claims (2)

[Claims] 1. A folding chair configured such that a front leg, a rear leg, and a seat can be folded in a substantially planar manner.
A connecting means for rotatably connecting the rear leg and the seat to each other, a covering means detachably attached to the connecting means for covering the connecting means, and a covering means which is on the back side when attached. A folding chair comprising: a movement prohibiting unit that is provided on a surface and prohibits lateral movement of front legs and rear legs stacked on the surface. 2. The folding chair according to claim 1, wherein the movement inhibiting means comprises a ridge that can be inserted into a gap between the front leg and the rear leg in the folded state.