JPH088673Y2 - Chair structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair structure in which a peripheral portion of an elastic sheet is attached to a seat frame fixed to a frame of a chair and a support frame of a back body.

[0002]

2. Description of the Related Art Conventionally, a chair constructed by connecting four peripheral portions of an elastic sheet to the upper surface of a support frame of a seat body and a back body which can be fixed to a frame of a chair and whose inside is open is shown in FIG. As shown in FIG. 3, the support frame (2a) fixed by the screw (8) above the metal fitting (7) extending from the frame (1) is made of wood, and the elastic sheet (2a) is attached to the upper surface of the support frame (2a). The periphery of 3) is locked by the tucker needle 9, and the periphery of the stretched fabric 11 covered with the cushion material 10 above the elastic sheet 3 is supported by the support frame 2.
It was structured so as to be locked to a) by the tucker needle (9).

[0003]

[Problems to be Solved by the Invention] However, when the elastic sheet is locked to the wooden frame by the tucker needle,
Since the elastic sheet is always fixed in the stretched state, it is cut or torn from the locking portion. Also, it is difficult to pull the elastic sheet evenly and attach it because the part away from the locking part will return to its original position.If the wooden frame is attached to the frame side of the chair, the wooden frame will be large in a small chair. It had a problem that it could not be shaped and its strength became insufficient.

[0004]

[Means for Solving the Problems] The present invention has been devised so as to solve such a problem and be preferably implemented, and therefore, the peripheral portion of the elastic sheet is provided on the upper surface of the support frame formed of a synthetic resin material. Are integrally formed, and mounting holes are formed in the support frame for mounting bolts and nuts for mounting. Also, the fibers of the elastic sheet are allowed to enter the inside of the periphery of the mounting holes. It is configured as.

[0005]

Therefore, the elastic sheet can be easily and firmly assembled to the supporting frame without damaging the fibers of the elastic sheet, and the supporting frame can be made relatively thin and light.

[0006]

EXAMPLES Next, examples shown in the drawings will be described.
FIG. 2 shows a perspective view of the entire chair, in which a seat body (A) is mounted between the front parts of a chair frame (1) formed by bending a pipe, and a back body (B) is installed between the rear parts. Attach. Here, only the embodiment of the seat body (A) is described for simplification of description, but the back body (B), or the seat body (A) and the back body (B) are similarly configured as necessary. be able to. As shown in FIGS. 1 and 4, the support frame (2) which can be fixed to the frame (1) and has an opening inside has a rounded shape on one side of its cross section, as shown in FIG.
As shown in Fig. 3, the outer peripheral surface is formed by foaming with a synthetic resin material so that a skin layer (2b) is formed, and at four locations on both sides of the support frame (2), concave step portions (6a) are formed on the upper and lower portions. And a mounting hole (6) in the vertical direction in which the skin layer (2b) is formed on the peripheral surface of the elastic sheet (3). 4 The peripheral portion is welded and integrally formed, but the fibers (3a) of the elastic sheet (3) are inserted into the inside of the mounting hole (6) as shown in FIGS. To mold. The attachment of the elastic sheet (3) to the support frame (2) is described in Japanese Patent Application No. 2-19 previously invented by the inventors of the present invention.
9256 can be easily implemented. Further, the support frame (2) is not limited to foam molding and can be appropriately formed by another method. Also, the concave step portion (6a)
A nut (5) having a washer portion that completely closes the concave step portion (6a) and a cylindrical portion that completely fills the inside of the mounting hole (6) is fitted and inserted into the concave step portion. The elastic sheet (3) and its fibers (3a) are firmly attached to each other, and a cushion material (10) is interposed above the elastic sheet (3) and covered with a stretch cloth (11). At the same time, the outer peripheral portion of the upholstery cloth (11) is engaged with the lower surface from the outer surface of the support frame (2) and fixed by a tucker needle (9), and extends inward from the frame (1). (7) is brought into contact with the mounting hole (6) and the tip side curved portion (7a) of the receiving metal fitting (7) is joined to the rounded portion of the support frame (2), and the lower portion of the receiving metal fitting (7) is joined. The bolt (4) to be inserted from is screwed to the nut (5) in the mounting hole (6) to be assembled.

[0007]

[Effects of the Invention] As described above, the present invention provides the cushion body (1
0) The outer peripheral edge portion of the upholstery cloth (11) covering the surface is greatly extended to sufficiently cover the outer peripheral edge and the lower surface of the resin molding support frame (2). On the other hand, the elastic sheet (3) has a concave step (6
Since it is designed to be inserted into the bottom of a) and the nut having a washer portion wider than this upper surface is screwed and fixed, the entire cushion body can be firmly attached. For this reason, various stresses and loads are applied to a chair, but chair parts such as a seat and a back, which must be held beautifully, can be kept beautifully and reliably forever. Further, the elastic sheet (3) can be firmly and satisfactorily assembled to the support frame (2) without damaging the fibers 3a. Moreover, by forming the support frame (2) with a synthetic resin material, the rounded shape and the mounting hole (6) can be easily formed, and the chair structure such as the seat body and the back body has sufficient strength and is lightweight and easy to mount the frame. The main member of can be obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along the line EE in FIG. 2 showing a main part of this embodiment.

FIG. 2 is a perspective view showing the entire chair.

FIG. 3 is a perspective view showing a support frame of a seat and an elastic sheet.

FIG. 4 is a perspective view showing a cross-sectional view taken along the line Loro of FIG.

5 is a cross-sectional view showing a part of the Haha line of FIG.

FIG. 6 is a sectional view of a main part showing a conventional example.

[Explanation of symbols]

A ... Seat B ... Back 1 ... Frame 2 ... Supporting frame 3 ... Elastic sheet 3a ... Elastic sheet fiber 4 ... Bolt 5 ... Nut 6.・ Mounting holes

Continuation of the front page (56) References Actual flat 4-64246 (JP, U) Actual flat 4-10749 (JP, U) JP 56-4242 (JP, B2) JP 55-3932 (JP , B2)

Claims (2)

[Scope of utility model registration request] 1. A chair component comprising a support frame (2) which can be fixed to a chair frame (1) and which has an opening inside, and a peripheral portion of an elastic sheet (3) being joined to the upper surface of the support frame (2).
A peripheral portion of the elastic sheet (3) is integrally formed on the upper surface of a support frame (2) formed of synthetic resin, and mounting bolts (4). A chair part comprising a mounting hole (6) for inserting a nut (5). 2. The chair component according to claim 1, wherein the elastic sheet (3) is formed integrally with the elastic sheet (3) by inserting the fibers (3a) into the periphery of the mounting hole (6).