JPH06197821A - Chair - Google Patents

Abstract

PURPOSE:To provide a chair which has sufficient sheet extension holding strength and provides significantly increased comfortableness. CONSTITUTION:A seat portion sheet material 3A is almost horizontally stretched across a seat portion space formed over a leg portion 4 and a seat portion sheet material 3B is stretched across a back portion space formed between the seat portion space and back members 5 erected at the rear end of the leg portion 4, and at least the front end of the seat portion sheet material 3A and the rear end of the back sheet material 3B are fixed or integrated together to dispose the front end portion of the seat portion sheet material 3A and the front end portion of the back sheet material 3B with an overlap to each other, and the back sheet material 3B is disposed in an upwardly inclined position with a slight sag provided from the overlap to the back portion space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat tension type chair in which a seat portion and a backrest portion are stretched with a sheet material.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
A seat member is simply stretched individually in the seat space formed in the upper part of the leg portion and in the backrest space formed between the backrest members erected at the rear end portions of the leg members, respectively. Those formed with parts are known.

Such a seat tension type chair is used as a portable folding chair. However, the above-mentioned configuration in which the sheet material is simply stretched is not only inferior in the seat tension holding strength. , Even if the seat is loose and slightly loosened, the seat is still uncomfortable to sit on.

An object of the present invention is to solve the above problems and to provide a chair having a strong seat tension holding strength and a significantly improved sitting comfort.

[0005]

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

In a seat tension type chair in which a seat portion 1 and a backrest portion 2 are stretched with a sheet material 3, a seat material 3A for a seat portion is provided in a seat space formed above a leg portion 4.
Is stretched substantially horizontally, and a seat portion seat material 3B is stretched in a backrest space formed between the seat space and a backrest member 5 erected at the rear end of the leg portion. The front end of the seat sheet material 3A and the front end of the seat sheet material 3B are fastened or connected to each other to dispose the front end portion of the seat portion sheet material 3A and the front end portion of the backrest sheet material 3B in a superposed state. However, the present invention relates to a chair characterized in that the backrest sheet material 3B is arranged in a rising and inclined state with a slight slack from the overlapping portion toward the backrest space.

[0007]

[Function] Seat material 3A for seat and seat material 3B for backrest
Means that the sheet material 3 is stretched in a superposed state at its front end portion, that is, a portion where a waist is placed and a large load is applied.
The tension holding strength of is improved.

From the back of the waist to the back, the seat material 3A gradually separates from the overlapping portion with the seat material 3A, and is supported by the seat material 3B for backrest arranged in a rising and inclined state. Since the sheet material 3A has a slight slack, it is supported (softly) so that it fits on the body surface from the back of the waist to the back. Also, since it is supported softly from the waist to the back, the sitting comfort will be greatly improved.

[0009]

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

The leg portion 1 is constructed by vertically arranging four pipe rods 6 which are arranged in the front, rear, left and right directions. In addition, an X-shaped bar rod 7 having an intersection pivotally connected between the leg rods 6
The lower end of each X-shaped bar rod 7 is pivotally attached to the fixed mounting portion 8 fitted on the lower end of each leg rod 6, and the upper and lower parts of each leg rod 6 can be slid up and down along the leg rod 6. The upper end portion of each leg rod 6 is pivotally attached to the slide mounting portion 9 fitted to, and when storing, the opening angles of the upper and lower ends of each X-shaped bar rod 7 are increased while moving each leg rod 6 to the center. It is configured so that it can be folded in a centralized state.

In this embodiment, the front, rear, left and right leg rods 6 are made longer than the sitting height to form a seat space between the leg rods 6, and the rear leg rods 6 serve as the backrest member 5 and the rear portion A backrest space is formed between the legs and rods 6.

In the present embodiment, the sheet material 3 (the seat portion seat material 3A and the backrest sheet material 3B) stretched over the seat portion space and the backrest space is formed of one cloth sheet.

That is, the seat material 3 for the seat of this cloth sheet
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 the rear side is sewn completely. The backrest sheet material 3B portion of this cloth sheet that is fixed by polymerization and folded back from this overlapping portion is slightly loosened and rises up and is gradually separated from the lower seat portion sheet material 3A portion, The upper part thereof is fixed to the backrest member 5.

The concrete fastening means are insertion holes through which the leg rods 6 are inserted at the four corners of the seat sheet material 3A (the front end of the backrest sheet material 3B overlaps on the front end side). 10 is formed, and a retaining ring 11 (grommet) is attached to the inner edge thereof, the insertion hole 10 is passed through the leg rod 6, and is locked on the slide mounting portion 9 and stretched in the seat space, and the backrest is formed. In the upper part of the sheet material 3B for use, a rear leg rod 6 (backrest member 5) is inserted and locked into a sleeve portion 12 formed on the rear side surface. Therefore, the leg 4 can be folded into a focused state, and
The sheet material 3 can also be pulled out and folded.

Further, in this embodiment, the base portions of the cloth belt-shaped member 13 are sewn on the right and left sides of the upper end front surface of the backrest sheet material 3B, and the front end portion thereof is locked to the stopper 14 as shown in FIG. , The stopper 14 is rotatably fitted to the upper end of the front leg rod 6, and the cloth strip-shaped member 13 is installed between the left and right front leg rods 6 in a slightly loosened state to form an elbow hook portion. ing.

In this embodiment, patterns such as trade names and trade names are displayed on the belt-shaped member 13 to enhance the design effect.

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

Not limited to this embodiment, the front end portions of the separate seat portion seat material 3A and backrest sheet material 3B may be superposed, or only the front end may be fixed to the seat portion seat. Material 3A
It is also possible to adopt a configuration in which the backrest sheet material 3B, which is overlapped with the above, gradually separates.

[0019]

Since the present invention is constructed as described above, the seat tension holding strength is improved and the seating comfort is remarkably improved.

[Brief description of 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 housed state of the present embodiment.

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

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

[Explanation of symbols]

 1 Seat Part 2 Backrest Part 3 Sheet Material 3A Seat Part Seat Material 3B Seat Part Seat Material 4 Legs 5 Backrest Member

Claims (1)

[Claims] 1. In a seat tension type chair having a seat portion and a backrest portion formed by stretching a seat material, a seat material for a seat portion is stretched substantially horizontally in a seat space formed in an upper portion of a leg portion. And a seat sheet material is stretched in a seat back space formed between the seat space and a back member standing upright at the rear end of the leg, and at least the front end of the seat sheet material is provided. The front end of the seat material for the backrest is fixed to or connected to the front end of the seat material for the seat and the front end of the seat material for the backrest is arranged in a superposed state, and the superposed portion is directed toward the backrest space. A chair characterized in that a seat material for the backrest is arranged in a state of rising and tilting with a slight slack.