JP2555427Y2 - Plastic chair - Google Patents

Description

[Detailed description of the invention]

[0001]

[Purpose of the invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic chair having an inverted L-shaped armrest made of a rigid foamed synthetic resin which straddles both sides of a back portion and a seat portion.

[0003]

2. Description of the Related Art Conventionally, an inverted L is provided between both sides of a back portion and a seat portion.
2. Description of the Related Art A chair provided with a character-shaped armrest is known.

In such a conventional chair, the back is made of an armrest made of a metal core covered with a soft resin such as polyurethane, or an armrest molded with a general resin so that the upper surface is easily gripped. Was.

[0005]

[Problems to be Solved by the Invention] However, such a conventional armrest has a problem in that the former uses a metal core material, which increases the price and is limited in terms of design. In the latter case, there is a problem that the back side has to be concave because of the problem of thinning, so that the strength and rigidity are poor, and the design is lacking in weight.

The present invention has been made to solve such a conventional problem. A plastic chair having an armrest which is relatively inexpensive, has a large degree of freedom in design, can have an arbitrary sectional shape, and has sufficient strength. The purpose is to provide.

[0007]

[Structure of device]

[0008]

The plastic chair of the present invention has an inverted L-shaped armrest fixed to both sides of the back and the seat, and a leg attached to the bottom of the seat. In the chair, the armrest is made of a hard foam synthetic resin molded product having a smooth surface and an almost uniformly foamed inside,
At both ends it has a mounting bracket fixed by simultaneous molding or post-embedded insert of metal plate,
The mounting bracket is screwed and fixed to the back and the seat.

As the synthetic resin, various known resins can be used. For example, hard foamed polypropylene and the like can also be used.

[0010]

The armrest of the chair according to the present invention is made of a hard foam synthetic resin molded article having a smooth surface and an almost uniformly foamed inside, so that even if the thickness is increased, no shrinkage occurs.
Therefore, any design can be adopted, and rigidity and mechanical strength can be increased. In addition, since a metal plate is formed at both ends at the same time or has a mounting portion fixed by a post-embedded insert, mounting to the back and the seat can be easily performed. In addition, since the armrest is screwed from the side, a chair without an armrest can be assembled as necessary without any trouble with other parts.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a partial cross-sectional view showing the entirety of a plastic chair according to this embodiment from the side, and FIG. 2 is an assembly view of a main part thereof.

In this chair, as shown in these figures, a back 1 and a seat 2 are connected in an L-shape, and an inverted L-shaped armrest 3 is fixed to both sides of the back 1 and the seat 2. The structure is such that the seat receiving device and the leg 4 are attached to the bottom of the seat.

The lower half of the seat portion 1 and the seat portion 2 are formed by snapping a seat inner cover 6 having a shape substantially the same as that of the seat outer cover 5 curved substantially in an L-shape to project from the upper surface of the seat outer cover 5. 7 is fitted into a snap hole 8 of the seat inner cover 6 to be integrated, and is formed by covering with a cushion 9 and a cover fabric 10 thereon. 11 is a reinforcement frame. The lower edge of the back outer cover 12 is screwed to the upper edge of the seat outer cover 5, and
4 from the upper edge to the center of the back outer cover 12.
And two limiter plates 13 are arranged over the upper part,
Both ends are screwed respectively.

A plurality of snaps 14 are also provided on the inner side of the back outer cover 12, and the back inner cover 15 is integrated by fitting the snaps 14 into the snap holes. The cushion 16 and the cover fabric 17 are also placed on these.
And the upper half of the back 1 is formed.

The armrest 3 has an inverted L-shape as a whole, and is formed of, for example, polypropylene resin so as to form a foam having a smooth surface and uniform air bubbles 18 as shown in FIG. In this embodiment, the outer shape is formed so as to form a one-blade shape. A mounting bracket 3a having a screw hole is integrally fixed to a seat mounting portion at the lower end of the armrest 3 by simultaneous molding. A mounting bracket 3b having another screw hole is integrally mounted on the lower surface of the upper end by a rear buried insert.

The armrest 3 is screwed at both ends thereof to the bottom surface of the seat outer cover 5 and to both sides of the back.

The leg portion 4 is filled with a sylinder which is communicated from a seat receiving device fixed to the bottom surface of the seat outer cover 5. In addition, inner cylinder covers 20 and 21 are provided at the intermediate portion, and the lower portion extends radially in the horizontal direction and has a caster 19 at the tip.

[0019]

[Effect of the Invention] As is clear from the above description, in the chair of the present invention, the armrest is made of a hard-foamed synthetic resin molded product having a smooth surface and a uniform interior, and metal plates are simultaneously formed on both ends thereof. Since the mounting part fixed by the embedded insert is provided, it is inexpensive compared to the one using a metal core material, has a greater degree of freedom in design, and has the problem of dividing the wall compared to the general synthetic resin molding There is no need to make the back side concave, so that strength and rigidity can be increased, and the degree of freedom in design is large.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing an entire embodiment of the present invention from the side.

FIG. 2 is an assembly view of a main part of FIG. 1;

FIG. 3 is an enlarged sectional view taken along the line III-III of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Back part 2 ... Seat part 3 ... Armrest 4 ... Leg part 5 ... Seat outer cover 6 ... Seat inner cover 7 ... Snap 12 ... Back outer cover 14 ... ...... Snap 15 ...... Back inner cover 18 ...... Bubbles

Claims (1)

(57) [Scope of request for utility model registration] 1. A chair in which an inverted L-shaped armrest is fixed over both sides of a back portion and a seat portion, and a leg portion is attached to a bottom surface of the seat portion. Consists of a molded article of hard foam synthetic resin which has been foamed almost uniformly, and has a metal fitting at both ends simultaneously fixed by a metal plate or a post-embedded insert, and this mounting metal is screwed to the back part and the seat part. A plactic chair, being fixed.