JP2002223884A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give a folding function and a function as a shelf with enough strength to a chair in a compatible manner. SOLUTION: When a shelf 4 is installed below a seat 3 supported by back legs 1 and front legs 2, a back end 4c found on the shelf 4 is connected to the back leg 1 as the back end 4c can turn around, and a front end 4d is connected to the front leg 2 as the front end 4d can turn around. While keeping this state, the back legs 1 and the front legs 2 can be folded by making them closer each other without hindering the shelf 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair suitably used in an office or the like.

[0002]

2. Description of the Related Art Chairs that are used simultaneously and in large quantities at a meeting place or the like must be foldable so that they can be compactly stored when not in use.

[0003] Therefore, this type of conventional chair is usually provided with a stay for connecting the front leg and the rear leg by an X-link mechanism, and prohibiting further opening when the legs are opened to a certain degree. , To ensure proper use.

[0004]

By the way, in such a configuration, there is no place for placing articles, so that the baggage carried by the user must be placed on the lap or the floor, which is extremely inconvenient. is there.

[0005] However, when the shelf is to be arranged below the seat, the X-link is folded close to the front leg and the rear leg while rotating, and if the shelf is simply made rigid, it interferes with the folding operation. The interference is unavoidable unless measures are taken, such as using a long hole and a pin to allow the shelf to slide, or making the shelf itself foldable.
For this reason, the structure becomes complicated, and it is difficult to provide a shelf with sufficient strength.

[0006]

According to the present invention, the following measures are taken to solve the above-mentioned problems.

That is, a chair according to the present invention comprises a shelf below a seat supported by a rear leg and a front leg, wherein the rear end of the shelf is rotatably connected to the rear leg and the front end is provided. Is rotatably connected to the front leg, and in this state, the rear leg and the front leg can be brought close to each other and folded without interfering with the shelf.

With this configuration, the rear end and the front end of the shelf are rotatably connected to the rear leg and the front leg so as not to hinder the approaching movement of the front leg and the rear leg. Even with this configuration, the folding function of the chair can be effectively ensured. For this reason, it is possible to secure the strength of the shelf and provide an appropriate temporary placing function, and it is also possible to effectively provide the shelf with a function as a beam connecting the front and rear legs.

In a specific embodiment, the lower end of the rear leg and the lower end of the front leg are connected by a base member, and the base member, the rear leg, the front leg, and the shelf constitute a parallel link. Can be

In order to make the shelf lightweight and excellent in strength, it is effective to form the shelf surface in a lattice shape.

[0011] In order to suitably balance the usability of the seat and the ease of use of the shelf, it is desirable that the seat is constructed by extending a net to the inside opening of a frame arranged around the seat.

In this case, a suitable mounting structure for the seat is as follows.
The rear end of the frame is rotatably connected to the rear leg so that the front end of the frame can be supported by the upper end of the front leg in the use position.

[0013]

An embodiment of the present invention will be described below with reference to the drawings.

The chair of this embodiment has a rear leg 1 and a front leg 2
A shelf 4 is provided below the seat 3 which is supported by the rear leg 1 and the front leg 2 when the rear leg 1 and the front leg 2 are folded.

More specifically, the front leg 1 and the rear leg 2
Is constituted by a pipe member or the like, and the lower ends 1b and 2b are connected by a base member 5 also made of a pipe member or the like. At the connection portion, the base member 5 is rotatable relative to the rear leg 1, and the front leg 2 is rotatable relative to the base member 1. In the illustrated example, a connecting member 61 partially provided with a slit 61a is used in front and rear, and a connecting member 61 on the rear side is used.
The lower end 1b of the rear leg 1 and the rear end 5c of the base member 5 inserted through the slit 61a into the interior of the base member 5 so as to be relatively rotatable about the horizontal axis m, and the front connecting member 61
Base member 5 inserted through slit 61a inside
Of the front leg 2 and the lower end 2b of the front leg 2 are connected so as to be relatively rotatable about a horizontal axis m. A stopper mechanism for regulating the relative rotation area to approximately 90 degrees is provided inside the connecting member 61 by an appropriate structure (not shown).

The rear leg 1 is set to be longer than the front leg 2, and a backrest 7 is formed between the upper end portions 1a of the left and right rear legs 1.

The shelf 4 is arranged at a position lower than the upper end 2a of the front leg 2, and is mainly composed of a rigid frame 4a composed of a vertical frame 41 and a horizontal frame 42. Are positioned between the left and right rear legs 1, 1 and between the front legs 2, 2, and the outer surface of the rear end 4c and the outer surface of the front end 4d are rotatably connected to the rear leg 1 and the front leg 2 via the horizontal support shaft n. are doing. The inner opening of the frame 4a is a bar 43
The lattice-shaped bars 43 form shelves 4b.

In this chair, the base member 5, the rear leg 1, the front leg 2 and the shelf 4 constitute a parallel link, and the base member 5 and the shelf 4 are used at the use position as shown in FIGS. Is parallel to the floor surface, and the rear leg 1 and the front leg 2 take a vertical upright posture, and from this position, the shelf 4 and the base member 5 rotate the rear ends 4c, 5c around the fulcrums n and m, The angle between the shelf 4 and the front leg 2 and the base member 5 and the rear leg 1
The angle formed by the rear leg 1 and the front leg 2 can be shifted to a folded state in which the rear leg 1 and the front leg 2 approach each other in parallel, as shown in FIG.

The seat 3 is formed by extending a net 32 on an inner opening of a frame 31 arranged in a frame shape, and the rear end 3c of the frame 31 is attached to the rear leg 1 via a horizontal axis p. It is rotatably connected to the front end 3 of the frame 31 at the use position.
d can be supported by a bridge member 8 bridged between the upper ends 2a of the front legs 2, and the seat 3 can be pivotally retracted upward in advance during storage as shown in FIG. ing.

As described above, in the chair of this embodiment, when the shelf 4 is mounted below the seat 3 supported by the rear leg 1 and the front leg 2, the rear end 4c of the shelf 4 can be rotated on the rear leg 1. And the front end 4d is rotatably connected to the front leg 2 so that the rear leg 1 and the front leg 2 can be folded close to each other without interfering with the shelf 4 in this state.

In this manner, the shelf 4 is mounted so that the rear end portion 4c and the front end portion 4d are rotatably connected to the rear leg 1 and the front leg 2 so as not to hinder the approach operation of the rear leg 1 and the front leg 2. Even if the shelf 4 itself is formed as a rigid body, the folding function of the chair can be effectively secured. For this reason, it is possible to secure the strength of the shelf 4 and to provide an appropriate temporary placing function, and also to effectively provide the shelf 4 with a function as a beam for connecting the front and rear legs 1 and 2 to form a chair. It is possible to configure a simple and strong shelf function while appropriately increasing the function of the shelf.

Further, since the lower end 1b of the rear leg 1 and the lower end 2b of the front leg 2 are connected by the base member 5, a parallel link is formed by the base member 5, the rear leg 1, the front leg 2 and the shelf 4. The rear leg 1 and the front leg 2 can be moved in parallel, and at the same time, the shelf 4 and the base member 5 can be moved in parallel so that they can be closely overlapped. Therefore, a compact folded state can be realized without employing the X-link mechanism.

At this time, since the shelf surface 4b has a lattice shape, the shelf 4 can be made lightweight and excellent in strength.

Further, since the seat 3 is formed by extending the net 32 to the inside opening of the frame 31 arranged on the periphery, a flexible cushioning action can be obtained on the seat 3 and the shelf 4 can be visually recognized at the same time. It is possible to improve the ease of use when putting baggage in and out.

In this case, the rear end 3c of the frame 31 is rotatably connected to the rear leg 1, and the front end 3d of the frame 31 is supported by the upper end 2a of the front leg 2 via the frame 8 at the use position. Therefore, when the parallel link operates, the seat 3 can be retracted, and the folding function of the chair can be properly secured.

The specific configuration of each part is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0027]

The present invention is embodied in the form described above and has the following effects.

That is, according to the present invention, when a shelf is provided below a seat supported by a rear leg and a front leg to constitute a chair, the rear end of the shelf is rotatably connected to the rear leg and the front end is connected to the rear leg. The front leg is rotatably connected to the front leg so that the rear leg and the front leg can be folded close to each other without interfering with the shelf in this state.

For this reason, the shelf can be constituted by a rigid body to ensure an effective shelf function, and the shelf can securely connect the front and rear legs to effectively improve the strength of the entire chair. It becomes possible.

If the lower end of the rear leg and the lower end of the front leg are connected by a base member and a parallel link is formed by the base member, the rear leg, the front leg, and the shelf, the front and rear legs can be opened in a vertical position and the leg can be properly adjusted. Use condition, and at the same time,
From this position, it is possible to realize a proper storage state by moving in parallel to a folding position in which the members are closely overlapped with each other.

If the shelf surface has a lattice structure, the shelf can be made lightweight and excellent in strength.

If the seat is constructed by extending a net to the inside opening of the frame arranged around the periphery, the seat can be comfortable and the shelf can be visually recognized, so that the seat is easy to use and the shelf is easy to use. Can be preferably compatible with each other.

In this case, if the rear end of the frame is rotatably connected to the rear leg so that the front end of the frame can be supported by the upper end of the front leg in the use position, the proper folding function and the proper Use condition can be secured.

[Brief description of the drawings]

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

FIG. 2 is a side view of the same.

FIG. 3 is an operation explanatory view corresponding to FIG. 2;

FIG. 4 is an operation explanatory view corresponding to FIGS. 2 and 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rear leg 1b ... Lower end of rear leg 2 ... Front leg 2a ... Upper end of front leg 2b ... Lower end of front leg 3 ... Seat 3c ... Rear end of frame 3d ... Front end of frame 4 ... Shelf 4b ... Shelf surface 4c ... Rear end of shelf 4d ... Front end of shelf 5 ... Base member 31 ... Frame 32 ... Net

Claims (5)

[Claims] An apparatus comprising a shelf below a seat supported by a rear leg and a front leg, wherein the rear end of the shelf is rotatably connected to the rear leg, and the front end is rotatable on the front leg. A chair which is connected so that the rear leg and the front leg can be folded close to each other without interfering with the shelf in this state. 2. The system according to claim 1, wherein the lower end of the rear leg and the lower end of the front leg are connected by a base member, and the base member, the rear leg, the front leg, and the shelf form a parallel link. The described chair. 3. The chair according to claim 1, wherein the shelf has a lattice-shaped shelf surface. 4. The chair according to claim 1, wherein the seat is formed by extending a net to an inner opening of a frame arranged around the seat. 5. The frame according to claim 4, wherein the rear end of the frame is rotatably connected to the rear leg so that the front end of the frame can be supported by the upper end of the front leg in the use position. Chair.