JP2727045B2 - Chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat-stretched chair in which a seat portion and a backrest portion are formed by stretching a sheet material.

[0002]

2. Description of the Related Art
The seats and the backrest are formed by individually extending the seat members individually in the seat space formed simply at the upper part of the leg and the backrest space formed between the backrest members erected at the rear end of the leg. What formed the part is well-known.

[0003] Such a seat-stretching type chair is employed in a portable folding chair. However, the above-described configuration in which a sheet material is simply stretched not only results in inferior strength in stretching and holding the seat. However, even if the seat is stretched with some slack, the seat is still uncomfortable.

[0004] It is an object of the present invention to provide a chair which solves such problems and has a strong seat tension holding strength and a remarkably improved sitting comfort.

[0005]

The gist of the present invention will be described with reference to the accompanying drawings.

In a seat-stretched type chair in which the seat portion 1 and the backrest portion 2 are formed by stretching a seat material 3, a seat material 3A is provided in a seat space formed above the leg portion 4.
Is stretched substantially horizontally, and a seat member 3B for a backrest is stretched in a backrest space formed between the seat space and a backrest member 5 erected at the rear end of the leg. The front end of the front seat member 3A in front of the seating position and the front end of the front extension portion that extends forward while overlapping the lower part of the seat member 3B on the seat member 3A are fixed or connected. At least at the seating position of the seat space, the seat member 3A and the seat member 3
A chair having a backrest sheet material 3B which is stretched and disposed in a superimposed state, and a slight slack is provided from the superimposed portion toward the backrest space, and the backrest sheet material 3B is stretched and disposed in a rising and inclined state. It is related to.

[0007]

[Action] Seat sheet material 3A and backrest sheet material 3B
This means that the sheet material 3 is stretched in a superposed state at its front end portion, that is, at the portion where the load is placed on the waist (the seating position), and the stretch holding strength of the sheet material 3 is improved.

Further, from the back of the waist to the back, it gradually separates from the overlapped portion with the seat member 3A and is supported by the back seat member 3B arranged in a rising and inclined state. Since the material 3B has a slight slack, the material 3B is supported (softly) so as to conform to the body surface from the back of the waist to the back. It is supported softly from the waist to the back, and the sitting comfort is greatly improved.

[0009]

In this embodiment, the present invention is applied to a folding chair.

The leg portion 1 is constituted by standing up four leg legs 6 made of four pipes arranged in front, rear, left and right. Further, an X-shaped cross bar 7 having an intersection portion pivotally connected between the leg bars 6.
And the lower end of each X-shaped rod 7 is pivotally attached to a fixed mounting portion 8 fitted to the lower end of each leg 6, and is slidable vertically along the leg 6 above each leg 6. The upper end of each leg 6 is pivotally attached to the slide mounting portion 9 fitted on the X-bar, and at the time of storage, the opening angle of the upper and lower ends of each X-shaped rod 7 is opened while moving each leg 6 toward the center. It is configured so that it can be folded at the center in a focused state.

In the present embodiment, the front, rear, left and right leg rods 6 are configured to be longer than the seating height, a seat space is formed between the leg rods 6, and the rear leg rod 6 is used as a backrest member 5. A backrest space is formed between the leg rods 6.

In this embodiment, the sheet material 3 (the seat material 3A for the seat portion and the seat material 3B for the back portion) which is stretched in the seat space and the backrest space is formed of one cloth sheet.

That is, the seat member 3 for the seat portion of the cloth seat
Part A is stretched with a slight slack in the seat space, the front end is folded back and overlapped, and the end in the range from the front end of the seat space to the center and further to the rear side is sewn completely and completely The backrest sheet material 3B portion of the cloth sheet which is fixed by polymerization and turned back from the polymerized portion is slightly slackened so as to rise and incline to gradually separate from the lower seat portion sheet material 3A portion, The upper part is fixed to the backrest member 5.

A specific fastening means is a through hole for inserting the leg rod 6 into each of the four corners of the seat material 3A (the front end of the seat material 3B is overlapped on the front end side). A retaining ring 11 (grommet) is attached to the inner edge of this, and this insertion hole 10 is passed through the leg rod 6 and locked on the slide mounting portion 9 to be stretched in the seat space, and the backrest is formed. The upper leg of the sheet material 3B is engaged with a rear leg 6 (back member 5) inserted into a sleeve portion 12 formed on the rear side surface. Therefore, while folding the leg part 4 into a converged state,
The sheet material 3 can also be pulled out and folded.

Further, in this embodiment, the base of the cloth band member 13 is sewn to the left and right sides of the upper end front side of the backrest sheet material 3B, and the front end thereof is engaged with the fastener 14 as shown in FIG. The stopper 14 is rotatably fitted to the upper end of the front leg 6, and the cloth strip 13 is slightly slackened between the left and right front leg 6 to form an armrest. ing.

In this embodiment, a design such as a trade name or a trade name is displayed on the belt-shaped member 13 to enhance the design effect.

Further, in this embodiment, the X-shaped bar 7 is formed into a deformed pipe having a hollow bulging ridge whose center is bulged as shown in FIG. It saves 20% and increases the strength about 5 times.

The present invention is not limited to this embodiment. The front ends of the separate seat member 3A and the backrest seat 3B may be superimposed, or only the front end may be fastened. Material 3A
The backrest sheet material 3B that is superimposed on the backrest may gradually come off.

[0019]

Since the present invention is constructed as described above, the seat material for the seat and the seat material for the backrest are stretched and arranged in a superposed state at the seating position of the seat space, and Since the seat material for the backrest is stretched and arranged in a rising and inclined state with a slight slack toward the backrest space, the seat material is in a superimposed state at the part where the backrest is placed and a large load is applied (seating position). It will be stretched in the seat material, and the stretch strength of the sheet material will be improved, and from the back of the waist to the back, it will gradually detach from the overlapping part with the seat material for the seat, and it will be in a rising slope state It is supported by the backrest sheet material provided, and since this backsheet material has a slight slack, it fits into the body from the back of the waist to the back (soft)
Even if you sit deeply with your hips slightly, even if you sit shallow, it is softly supported from waist to back,
It will be a revolutionary chair that will greatly improve sitting comfort.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present embodiment.

FIG. 2 is a side view of the present embodiment.

FIG. 3 is an exploded perspective view of the present embodiment.

FIG. 4 is a perspective view of a stored state of the embodiment.

FIG. 5 is a cross-sectional view of an X-shaped bar according to the present embodiment.

FIG. 6 is an enlarged cross-sectional view of a connecting portion between the cloth band member and the leg rod according to the present embodiment.

[Explanation of symbols]

 Reference Signs List 1 seat portion 2 backrest portion 3 seat material 3A seat material for seat portion 3B seat material for seat portion 4 leg portion 5 backrest member

Claims (1)

(57) [Claims] In a seat-stretched type chair in which a seat portion and a backrest portion are formed by stretching a seat material, a seat material for a seat portion is stretched substantially horizontally in a seat space formed above a leg portion. A seat member for backrest is stretched in a backrest space formed between the seat space and a backrest member erected at the rear end of the leg, and at least a seating position of the seat material for seating is set. A front end portion of the front portion and a front end portion of a front extension portion extended forward while the lower portion of the seat material for the backrest is superimposed on the seat material for the seat portion are fastened or connected to each other to at least seat the seat space. In the position, the seat material for the seat portion and the seat material for the backrest are stretched and arranged in a superimposed state, and the seat material for the backrest is tilted in a rising and inclined state with a slight slack from the superimposed portion toward the backrest space. It is characterized by being installed Chair.