JPH0722122Y2 - Chair assembly mechanism - 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 assembly mechanism.

[0002]

2. Description of the Related Art In recent years, the manufacture of chairs, in which a back plate, legs and a seat are molded from a synthetic resin material and then assembled and completed, has become widespread. However, it is difficult to provide a chair that can be used safely and stably for a long period of time because of various problems in mounting and assembling each part thereof.

For example, as a means for attaching the back plate to the leg portion, the left and right side portions of the back plate are provided inside the leg portion having a predetermined shape, and then through the screw holes provided orthogonally to the back surface portion or the side surface portion. Since the screws are attached by screwing, the strength is weak against the load applied from the lateral direction, it is difficult to maintain the rigidity of the entire chair, and there is instability with respect to rolling that is peculiar to the molded and assembled chair.

[0004]

Therefore, the present invention eliminates the drawbacks of such a chair assembly mechanism, increases the rigidity of the entire chair, and is capable of maintaining stability for a long period of time. The purpose is to provide a chair.

The present invention provides an assembling mechanism applicable not only to the case of molding with a synthetic resin material but also to the case of assembling a chair manufactured by die casting of aluminum, zinc or the like.

[0006]

SUMMARY OF THE INVENTION According to the present invention, attached portions are formed inwardly at the upper end portions of the left and right side portions of a leg body, and an inclined surface portion is provided at the upper end of the attached portions and is inclined from here. A screw hole is provided downward, and another screw hole is provided obliquely downward from this screw hole, and on the other hand, it projects upward and downward in the oblique direction at predetermined locations on both the left and right sides inside the back plate. And a screw hole is formed here, and a screw is screwed into the screw hole on the leg side and the screw hole on the back plate side, and the screw is slanted from the upper and lower diagonal positions on the left and right sides of the front part of the chair. The leg portion and the back plate portion are connected by tightening downward.

[0007]

The two screws for attachment are screwed and assembled in the screw holes in the diagonal direction and position in the front part of the chair.

After the assembly, the back plate and the cover plate for covering the mounted portion are attached to the inside of the back plate.

[0009]

EXAMPLES 1 is a leg body made of synthetic resin or other material, 2 and 2 are attached portions having a thickness toward the inside at the upper end portions of the left and right side portions of the leg body, and 3 and 3 are The beveled portion formed on the upper end of the attached portion 2, 2 has a screw hole 4,
4 is provided. Reference numerals 5 and 5 are screw holes provided at positions inside the attached parts 2 and 2 obliquely below the screw holes 4 and 4.

Reference numeral 6 denotes a back plate formed of synthetic resin or the like. Protrusions 7, 7 are provided at predetermined positions on the left and right sides of the inside of the back plate at upper and lower positions in an oblique direction. Is provided with screw holes 8 and 8 in the same direction.

Numerals 9 and 9 are screws for connecting the screw holes 4 and 5 on the leg 1 side and the screw holes 8 and 8 on the back plate 6 side, and these screws are obliquely screwed at oblique positions.

[0012]

EFFECT OF THE INVENTION As a means for connecting the back plate to the leg portion, the screw is attached in a diagonal position as viewed from the front portion, and also in each position in a diagonal downward direction, so that a person can sit on the chair. When this happens, the load on the back comes out obliquely downward, sufficient rigidity can be exerted against the load, and a comfortable sitting comfort can be maintained for a long period of time with peace of mind.

Further, it is possible to prevent the rolling characteristic of the molded and assembled chair to a minimum, and it is possible to provide a stable chair.

[Brief description of drawings]

FIG. 1 is an overall front view after assembly.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a perspective view of a main part before assembly.

[Explanation of symbols]

 2,2 Attached part of leg body 3,3 Sloping surface part 4,4 Screw hole 5,5 Screw hole 7,7 Back plate protrusion 8,8 Screw hole 9,9 Screw

Claims (2)

[Scope of utility model registration request] 1. A mounting part is formed inwardly at the upper end of each of the left and right sides of the leg body, and an inclined surface part is provided at the upper end of the mounting part, and a screw hole is provided obliquely downward from this. Another screw hole is provided diagonally downward from this screw hole, and on the other hand, projecting portions are formed at predetermined positions on both the left and right sides of the inner side of the back plate in the diagonally upper and lower positions and screwed there. A hole is provided, and a screw is screwed into the screw hole on the leg side and the screw hole on the back plate side. An assembly mechanism for a chair, characterized in that the rear portion and the back plate portion are connected. 2. A mounting portion is formed inwardly at the upper end portions of the left and right side portions of a leg body made of a synthetic resin in a predetermined shape, and a slope portion is provided at the upper end of the mounting portion. A diagonally downward direction from this screw hole, and diagonally downward from this screw hole, another diagonally downward hole, and diagonally up and down at predetermined locations on the left and right sides of the inside of the molded back plate. And a screw hole is provided at this position, and a screw is screwed into the screw hole on the leg side and the screw hole on the back plate side. An assembly mechanism for a chair, characterized in that the leg part and the back plate part are connected to each other by being screwed obliquely downward from an oblique position.