JPH0810091A - Pad part of chair - Google Patents

Abstract

PURPOSE:To simplify the structure of a pad part of a seat part, a back part and an ant rest part of a chair. CONSTITUTION:The peripheral edge of a cushion main body 1 is formed with a thin peripheral edge part 5. A hollow frame main body 2 having an upper plate 6 and a lower plate 7 is formed by the blow molding. The peripheral edge of the upper plate 6 of the frame main body 2 is formed with a receiver groove 8. The cushion main body 1 is adhered to the upper plate 6 of the frame main body 2 with an adhesive agent, and the thin peripheral edge part 5 is inserted into the receiver groove 8. A pad part of a chair is formed of a cushion main body 1 and a frame main body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pad portion such as a seat portion, a back portion and an armrest portion of a chair.

[0002]

2. Description of the Related Art In folding chairs and various chairs, a pad portion such as a seat portion is formed by placing a foam material on a core material and covering the foam material with a skin material. Although many of them are rolled around on the back side and fixed with a tacker etc., many of them are cumbersome to manufacture and the cushioning properties are not sufficient, and the cushion part cannot be easily replaced. In addition, a plate-shaped frame
There is also a pad part in which the cushion material is made, the cushion material is placed on the frame, and the peripheral edge of the cushion material is inserted into the insertion groove provided in the frame, but the molding of the insertion groove is troublesome. However, the frame itself has poor cushioning properties, and there are not many satisfactory ones.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a pad portion of a chair which has an appropriate cushioning action, has a simple structure and is easy to manufacture.

[0004]

According to the present invention, a hollow frame main body having an upper plate and a lower plate is formed by blow molding, and a receiving groove is provided at the peripheral edge of the frame main body to form a cushion main body. A pad portion of a chair is provided which is placed on the upper plate of the frame body and the peripheral edge of the cushion body is inserted into the receiving groove, and the above object is achieved.

[0005]

EXAMPLES Examples will be described below. FIG. 1 shows a cushion main body (1) and a frame main body (2) that form pad portions such as a seat portion, a back portion, and an armrest portion. The cushion body (1) and the frame body (2) are formed in an appropriate shape according to the shape and structure of the seat, back, armrest, etc. of the chair. The cushion main body (1) is composed of a skin material (3) and a foam material (4). In the figure, the skin material (3) is made of polypropylene-made cloth, and the foam material (4) is used. ) Is polyethylene foam or urethane foam
However, it is possible to use an appropriate material and have an appropriate configuration. For example, a combination of a skin material and a polyethylene foam, or a polyethylene foam between the skin material and the urethane foam. A foam can be provided to form the foam material into two layers. Then, the above-mentioned tension cloth and a slab-shaped urethane foam, etc. are stacked, put in a mold, heated and pressed, and formed into a predetermined shape by hot pressing, and a thin peripheral portion extending outwardly to the peripheral edge ( 5) is formed. At this time, the tension cloth and the slab urethane are bonded with an appropriate adhesive before heating and pressurizing, or a hot-melt adhesive is interposed between the tension cloth and the slab urethane, and the When put in and heated and pressed, it is melted and adhered. The foam material may be shaped into the above shape and then the skin material may be bonded, or the cushion body may be formed by any other suitable method.

When polypropylene fabric is used as the stretch fabric as shown in the embodiment, the stretch fabric itself is easily formed into a predetermined shape when heated and pressed as compared with acrylic fabric or polyester fabric. Even if the strength of the adhesive is weak, there is no fear that a part of the upholstery cloth will float up without being added to the foam material, and the whole can be closely adhered. In addition, urethane foam and polypropylene cannot generally be expected to have strong adhesive strength, which means that when discarding a chair using the above-mentioned pad portion made as described above, It is also convenient from such a point of view, because the upholstery material of the pad portion and the foam material can be easily separated and separated. Furthermore, considering the convenience of disposal, an olefinic resin such as polyethylene laser is used as the skin material (3), and an olefinic foam material such as polyethylene foam is used as the foam material (4). Using
If both are made of the same material, they can be recycled without separation.

The frame body (2) is formed by blow molding polypropylene or other synthetic resin material.
Upper plate (6) supporting the base surface of the cushion body (1)
And a lower plate (7) opposite to the upper plate (6) with a space left. In the vacant space, appropriate ribs and the like are projected from the upper plate (6) and / or the lower plate (7) side and welded to the side face of the facing lower plate or the hollow plate side of the hollow part side. It is good (not shown). Around the frame body (2), a peripheral portion (5) formed in the cushion body (1).
A receiving groove (8) is formed so as to insert the.

The receiving groove (8) can be formed in various structures. In FIG. 2, the upper plate (6) is formed at the time of blow molding.
An example is shown in which the receiving groove is formed by recessing the peripheral edge of the. In the embodiment shown in FIG. 2 (a), the upper plate (6) is formed by folding the peripheral edge of the upper plate (6) downward in a substantially U shape along the side wall (9). It is mounted on (6) and its base surface is adhered to the upper plate, and the peripheral portion (5) is inserted by being inserted into the receiving groove (8).

In the embodiment shown in FIG. 2 (b), the receiving groove (8) is slanted inward with respect to the lower plate, and the frame body (2) is blow-molded. In this case, the side wall (9) is formed so as to rise obliquely outward, and one side surface
An edge member (11) inclining toward the inside is formed as a separate body (10), and by fixing this edge member (11) to the peripheral edge of the upper plate (6), an oblique receiving groove (8) is formed. Is forming. And
The peripheral edge portion (5) of the cushion body (1) adhered on the upper plate (6) is inserted into the receiving groove (8). Thus, when the peripheral edge portion (5) is inserted into the receiving groove (8) directed obliquely inward, the peripheral edge portion (5) is less likely to come off during use.

FIG. 3 shows an embodiment in which the receiving groove (8) is formed by forming an opening in the peripheral edge of the upper plate (6). In this case, appropriate ribs or the like are provided between the upper plate (6) and the lower plate (7) as described above, and the peripheral edge portion (5) of the cushion body (1) can be inserted. A slit-shaped opening is provided to form a receiving groove (8).

The cushion body (1) is provided with the frame.
It is placed on the upper plate (6) of the main body (2), adhered with an appropriate adhesive, and the thin peripheral portion (5) is inserted into the receiving groove (8) to be attached. Since the cushion body (1) thus attached can be removed from the frame body (2) by forcibly peeling it off, it can be replaced with a new cushion body. Although the pad portion of the seat portion is shown as an example in the drawing, the pad portions such as the back portion and the armrest portion can be configured in substantially the same manner.

[0012]

The present invention is constructed as described above, and has the following features.
Since the cushion main body is attached to the frame main body formed by molding, the cushion main body and the frame main body can perform an appropriate cushioning action, and the peripheral edge portion of the cushion main body can be formed on the frame main body. Since it is inserted into the receiving groove formed on the peripheral edge of the upper plate, the mounting work is easy and the cushion body can be easily replaced.

[Brief description of drawings]

FIG. 1 is a sectional view of a cushion body and a frame body showing an embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view showing an embodiment of a receiving groove portion of the frame body.

FIG. 3 is a partially enlarged sectional view showing another embodiment of the receiving groove portion of the frame body.

[Explanation of symbols]

 1 Cushion main body 2 Frame main body 3 Skin material 4 Form material 5 Peripheral part 6 Upper plate 7 Lower plate 8 Receiving groove 9 Side wall 11 Edge member

Claims (3)

[Claims] 1. A hollow frame body made of a synthetic resin material having an upper plate supporting a base surface of a cushion main body and a lower plate opposed to the upper plate with a space below the upper plate. , The frame
A pad portion of a chair, characterized in that a receiving groove is formed in the peripheral edge of the cushion body, and the peripheral portion of the cushion body is inserted into the receiving groove. 2. The pad portion of the chair according to claim 1, wherein the receiving groove is formed by recessing the peripheral edge of the upper plate. 3. The pad portion of the chair according to claim 1, wherein the receiving groove is formed by forming an opening in a peripheral edge of the upper plate.