JP2003024178A - Folding chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding chair which can be accommodated in a compact way along a wall or the like and in which a projecting amount from a wall or the like is reduced to the necessary minimum even in a used state. SOLUTION: A base 1 arranged in an upright position and a pair of leg members 21 and 22 crossing in a X form and connected in a rotatable manner each other in a crossing portion are included. The lower end of the leg member 21 of a leg body 2A is connected in a rotatable manner to the lower end of the base 1 and the upper end of the leg member 22 is engaged with guide grooves 121 and 131 placed in the base 1 to be able to move in up and down directions. In a seat plate 3, a front edge 31 in a horizontal position is connected in a rotatable manner to the upper end of the leg member 21 and a back end edge 32 in a horizontal position is engaged with the guide grooves 121 and 131 placed in the base 1 to be able to move in a vertical directions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding chair, and more particularly to a folding chair having a simple structure that can be compactly stored along a wall of a house.

[0002]

2. Description of the Related Art As a folding chair, for example, the actual open sho 58-
Japanese Patent No. 164554 discloses a long leg material and a short leg material as X.
Crosswise and rotatably connected to each other at the intersection, the rear end edge of the horizontal seat plate is rotatably connected to the intermediate position of the long leg, and the front end edge of the horizontal seat plate is also connected. It is shown that the structure is detachably connected to the upper end of the short leg material. This folding chair is entirely folded by removing the front end edge of the seat plate from the upper end of the short leg member and rotating them to a position along the long leg member (see FIG. )reference).

[0003]

By the way, the folding chair described in the above publication is folded compactly in the storage state so that it can be compactly stored. As shown, there is a problem in that the long leg member is in a posture in which the long leg member is largely inclined back and forth, and thus the leg member largely protrudes from the wall of the house.

Therefore, the present invention solves such a problem by providing a folding chair which can be compactly stored along the wall or the like and which can minimize the amount of protrusion from the wall or the like even when in use. The purpose is to provide.

[0005]

In order to achieve the above object, in the first aspect of the present invention, a base body (1) arranged in an upright posture.
And a pair of leg members (21, 22) that intersect in an X-shape and are rotatably coupled to each other at the intersection, and one leg member (2
The lower end of 1) is rotatably coupled to the lower end of the base body (1), and the upper end of the other leg member (22) engages with guide portions (121, 131) provided on the base body (1). The leg bodies (2A, 2B) that are movable in the vertical direction, and the front end edge (31) in the horizontal posture on the upper ends of the leg members (21).
Is rotatably coupled, and a rear end edge (32) in a horizontal posture is provided on the base body (1) at a guide portion (12).
1, 131) and a seat plate (3) which is movable in the up-and-down direction, and the legs ((1) and (131) are movable as the rear end edge (32) of the seat plate (3) is pulled upward. The crossing angle (θ) of both leg members (21, 22) of (2A, 2B) becomes small, and the front edge (31) of the seat plate (3) and the upper ends of one leg member (21) and the other leg member ( The lower end of 22) is pulled toward the base body (1), and the seat plate (3) and legs (2A, 2B)
Are accommodated in a standing posture that is substantially flush with the base body (1). Here, when fixing the base body (1) to an upright wall or the like, the other leg member (22) can be omitted.

According to the first aspect of the present invention, when folded, the entire chair is pulled toward the base body in the standing posture, and the seat plate and the legs are stored in the standing posture substantially flush with the base body. The entire chair can be compactly stored in a flat shape along with the above, and a sufficient floor space can be secured. When pulling out the folding chair from the stored state and using it, the front edge of the seat plate (the lower edge in the stored state)
Pull toward you. As a result, the upper end of one leg member is pulled toward you, and at the same time, the rear edge of the seat plate (upper edge in the stored state) moves downward along the guide portion, while the upper end of the other leg member is guided. The leg members move downward along the section and open in a state where the two leg members intersect in an X shape. Then, the lower surface of the rear end edge of the seat plate comes into contact with the upper ends of the other leg members, is held in a horizontal posture, and can be seated. As described above, the seat plate and the legs supporting the seat plate can be pulled out from the base body in the upright posture and used with the minimum required amount.

In the second aspect of the present invention, the base body (3) comprises a back plate (11) and frame members (12, 13) provided along the left and right sides of the back plate (11). (12,1
3) Guide grooves (1
21 and 131) to form the guide portion, and are fitted in the guide grooves (121 and 131) at the upper end of the other leg member (22) and the rear end edge (32) of the seat plate (3). Providing engaging pin bodies (27, 33). According to the second aspect of the present invention, the engagement between the upper end of the other leg member and the rear end edge of the seat plate and the guide portion can be easily realized. In this case, by appropriately setting the thicknesses of the seat plate and the legs, when the seat plate and the legs are stored in a standing posture that is substantially flush with the base body, the same thickness as that of the left and right frame members is set. The amount of protrusion can be set, and the overall appearance is good.

In the third aspect of the present invention, the legs (2A, 2B) are provided.
Are provided on both sides of the seat plate (3). In the third aspect of the present invention, the seat plate can be stably supported.

The reference numerals in the parentheses indicate the correspondence with the specific means described in the embodiments described later.

[0010]

1 is a cutaway side view of a folding chair in use. 2 is a front view of the folding chair in the stored state, FIG. 3 is a cutaway side view of the folding chair in the stored state, and FIG. 4 is a plan view thereof. The folding chair has a rectangular wooden base body 1, which is composed of a rectangular back plate 11 (FIG. 1) and frame members 12, 13, 14 of constant width provided along the upper side and the left and right sides thereof. It is configured. The frame member 14 has a recessed central portion 141 excluding both end portions in plan view (FIG. 4). The back plate 11 is at the left and right positions of the upper end and the lower end, and the upright wall W
(Fig. 1) and the like are fixed by screws 15 and maintained in a standing posture. In addition, guide grooves 121 and 131 extending vertically from an upper end portion to an intermediate position are formed on the inner side surfaces of the left and right frame members 12 and 13 at approximately the center in the width direction.

Legs 2A and 2B are respectively provided at the left and right positions (FIG. 2). Each leg 2A and 2B is composed of a pair of wooden leg members 21 and 22, and the leg member material 21 is a leg member 22. It is a little longer than These leg members 21, 22
In use, they intersect in an X-shape at an intermediate position (FIG. 1) and are rotatably coupled to each other by a bolt shaft 23 at this intersection. The lower ends of the leg members 21 located on the inner side are rotatably coupled to both end faces of the square bracket member 16 joined to the central portion of the lower side of the back plate 11 by shaft members 24, respectively. Further, a pin body 27 is projectingly provided on the upper end side surface of each leg member 22 located on the outer side, and is fitted into the guide grooves 121 and 131, respectively. A rectangular connecting plate 25 is disposed between the left and right leg members 21 (FIG. 2), and the left and right sides of the connecting plate 25 are joined to the inner side surfaces of the leg members 21 to integrally connect them. . A rectangular notch 251 for a handle is formed in the center of the upper side of the connecting plate 25, and a notch 252 for inserting the screw 15 is formed at the left and right positions of the lower side.

A substantially rectangular seat plate 3 which is in a horizontal posture in a used state has a front end edge 31 (a lower end edge in a housed state) narrowed stepwise (FIG. 2), and leg members are provided on both side surfaces thereof. An inner surface of the upper end of 21 is rotatably connected by a shaft member 26. The seat plate 3 has pin bodies 33 protruding from both side surfaces of a rear end edge 32 (upper edge in a housed state) in a horizontal posture, and the guide grooves 121 and 13 are provided above the pin body 27, respectively.
It is fitted inside 1. The bottom surface of the rear edge 32 of the seat plate 3 is in contact with the upper ends of the leg members 22 to maintain the seat plate 3 in a horizontal posture when in use. An elongated hole 321 (FIG. 2) for a handle is formed in the center of the rear edge 32 of the seat plate 3, and a notch 3 for inserting the screw 15 is provided at the left and right positions of the rear edge 32.
22 is formed.

When the folding chair having such a structure is folded and stored from the use state shown in FIG. 1 as shown in FIGS. 2 to 4, the long hole 321 of the seat plate 3 is put on the fingertips and the seat plate 3 is held. The rear edge 32 is pulled upward as shown by the arrow in FIG. With this pulling up, the rear end edge 32 of the seat plate 3 is moved vertically upward as the pin body 33 moves in the guide grooves 121 and 131. Front edge 31 of seat plate 3
Is coupled to the upper end of the leg member 21 by the shaft member 26, so that the coupling portion by the shaft member 26 is pulled toward the base body 1 as the rear end edge 32 moves upward. Along with this, the pin body 27 at the upper end of the leg member 22 has the guide groove 121,
As the leg members 21 and 22 move upward in 131, the intersection angle θ (FIG. 1) of the leg members 21 and 22 gradually decreases, and the lower ends of the leg members 22 are drawn toward the base 1. Rear edge 32 of seat plate 3
The seat plate 3 is pulled up to the uppermost position (FIG. 2), the frame member 1
It is stored in the upper half space of the back plate 11 surrounded by 2, 13, and 14. At the same time, the left and right legs 2A, 2B and the connecting plate 25 for connecting them are housed in the lower half space of the back plate 11, and the seat plate 3 and the legs 2A, 2B are in a standing posture in the same plane.
Within the thickness (Fig. 3). In this way, the entire chair is compactly stored in a flat shape along the upright wall W of the house, and as a result, a sufficient space for the floor F can be secured.

When the folding chair is pulled out from the stored state and used, a fingertip is inserted from the notch 251 (FIG. 2) of the connecting plate 25 so that the front end edge 31 (lower end edge in the stored state) of the seat plate 3 is moved forward. When pulled downward, the upper ends of the leg members 21 are pulled forward. As a result, the leg member 21 is centered around the shaft member 24.
Is rotated to the front side (clockwise in FIG. 1), and accordingly, the pin body 27 provided at the upper end of the leg member 22 moves downward in the guide grooves 121 and 131 to move both leg members 21 and 21.
The crossing angle θ of 2 gradually increases, the lower end of the leg member 22 advances toward you, and both leg members 21 and 22 open in an X-shaped intersecting state (FIG. 1). At this time, in the seat plate 3, the pin body 33 of the rear end edge 32 moves downward along the guide grooves 121 and 131, and the lower end of the rear end edge 32 comes into contact with the upper ends of the leg members 22.
The horizontal posture is as shown in. In this way, as shown in FIG. 5, it is possible to sit on the seat plate 3 pulled out in the horizontal posture.

If a body restraining belt 4 (FIG. 5) is attached to the upper end of the base 1 and the folding chair is installed on the upright wall W of the patient's room, when the sick person gets up from the bed and rests, The seat plate 3 can be pulled out horizontally from the base body 1 to allow the sick person to sit on it, and the belt 4 can securely hold the body B of the sick person. As the belt 4, for example, a pair of left and right belt members having constant widths are provided with hook-and-loop fasteners on the outer circumference of the leading end of one belt member and the inner circumference of the leading end of the other belt member. In accordance with the above, the belt material is used so that the body B can be easily restrained by connecting the belt materials with the surface fasteners with one touch.

As described above, since the folding chair of the present invention is flatly folded inside the base body 1 in the standing posture attached to the vertical wall W of the patient's room or the like, the space of the patient room floor F can be saved when the chair is not used. It can be sufficiently secured, and even when using a chair, pull out the seat plate 3 and the legs 2A and 2B that support the seat plate 3 from the standing body 1,
It is possible to use the patient room floor F with a necessary minimum amount of projection while securing a space.

In the above embodiment, it is not always necessary to fix the back plate to the upright wall. Further, it is not always necessary to provide the back plate, and the frame member may be fixed to the upright wall or the like. In the above-described embodiment, the guide grooves into which the pin bodies are fitted are the same, but they may be separate guide grooves.

[0018]

As described above, according to the folding chair of the present invention, the folding chair can be compactly stored along the wall or the like, and the amount of protrusion from the wall or the like can be minimized even when in use.

[Brief description of drawings]

FIG. 1 is a cutaway side view of a folding chair in use.

FIG. 2 is a front view of the folding chair in a stored state.

FIG. 3 is a cutaway side view of the folding chair in the stored state, and the cross-sectional portion is taken along the line III-III in FIG.

FIG. 4 is a plan view of the folding chair in a stored state.

FIG. 5 is a side view showing a state where the user sits on a folding chair.

[Explanation of symbols]

1 ... Base, 12, 13 ... Frame material, 121, 131 ... Guide groove, 2A, 2B ... Leg body, 21, 22 ... Leg member, 27 ... Pin body, 3 ... Seat plate, 31 ... Front edge, 32 ... Rear Edge, 33 ...
Pin body.

Claims (3)

[Claims] 1. A base body arranged in a standing posture, and a pair of leg members which intersect in an X shape and are rotatably coupled to each other at intersections, and the lower end of one leg member is the lower end of the base body. A leg body that is rotatably coupled to the other leg member, and the upper end of the other leg member is engaged with a guide portion provided on the base body to be movable in the vertical direction; The front end edge in the posture is rotatably coupled, and the rear end edge in the horizontal posture is engaged with a guide portion provided on the base body, and a seat plate movable in the vertical direction is provided. As the rear end edge of the seat plate is pulled upward, the crossing angle of both leg members of the leg becomes smaller, and the front end edge of the seat plate and the upper end of the one leg member and the lower end of the other leg member. Is pulled toward the base body, and the seat plate and the leg body are aligned with the base body. A folding chair that can be stored in a standing posture that is almost flush. 2. The base body comprises a back plate and frame members provided along the left and right sides of the back plate, and guide grooves are formed on the inner side surfaces of the frame members so as to extend in the vertical direction. The folding chair according to claim 1, wherein a pin body fitted and engaged in the guide groove is provided on the upper end of the other leg member and the rear end edge of the seat plate. 3. The folding chair according to claim 1, wherein the legs are provided on both sides of the seat plate.