JPH0595847A - Chair - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to provide a chair that is inexpensive, has a degree of freedom in design, and is easy to maintain. A chair 1 made of resin in which a seat 11 and a leg 12 extending from the seat 11 are integrally injection-molded, and at least the leg 12 has a hollow portion 13 It is formed into a shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin chair used in a bathroom or the like.

[0002]

2. Description of the Related Art Generally, in a bathroom or the like, a resin chair molded by injection molding is used. As this chair, a chair in which legs are extended from four corners of a rectangular seat is known.

Conventionally, in such a chair, the legs are considerably thickened so as to withstand a buckling load, the adjacent legs are connected to each other, and a reinforcing rib is provided on the back side of the legs. Was.

[0004]

However, when the legs are thickly formed as in the conventional case, the chair itself becomes heavy and the amount of the resin material used increases, resulting in a high material cost and a high cost. Will be.

Further, in the case of the structure in which the adjacent leg portions are connected to each other, there is a disadvantage that the design of the chair is limited.

Further, when reinforcing ribs are provided on the back side of the legs, scales and the like tend to accumulate on the reinforcing ribs,
In addition, there is an inconvenience that it is difficult to remove this scale.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a chair that is inexpensive, has a degree of freedom in design, and is easy to care for.

[0008]

A chair of the present invention for solving the above-mentioned problems is a resin chair in which a seat portion and a leg portion extending from the seat portion are integrally injection-molded. Thus, at least the leg portion is formed in a thick-walled shape having a hollow portion.

[0009]

According to the chair of the present invention, at least the leg portion is formed in a thick-walled shape having a hollow portion. Therefore, it is possible to reduce the amount of resin material corresponding to the hollow portion while ensuring the buckling load resistance. Can be planned.

[0010]

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

FIG. 1 shows an outline of the overall structure of the chair 1, and FIG. 2 shows a sectional view of the main part thereof.

That is, the chair 1 has a rectangular seat portion 1
1 and the leg portions 12 extending from the four corners of the seat portion 11,
It is integrally molded by a gas injection injection molding method.

The seat portion 11 is formed in a rectangular shape with rounded corners, and a hole 14 for preventing water accumulation is provided at a substantially central portion.

The legs 12 are rod-shaped with a substantially L-shaped cross section, and extend downward from the four corners of the seat 11.

The chair 1 having such a structure is formed to have a considerably large thickness as a whole so that a sufficient buckling strength can be secured. A hollow portion 13 formed by a gas injection molding method is formed inside the seat portion 11 and the leg portion 12, and the entire chair 1 is lightened.

According to this gas injection molding method, after filling an insufficient amount of resin in a mold, gas is injected and the resin is caused to flow by the gas pressure of this gas (pressure of 30 to 100 kg / cm ² ). Therefore, the hollow portion 13 can be formed. Therefore, the size of the hollow portion 13 is determined by the amount of resin injected into the mold.

However, if the hollow portion 13 is too large, it is not possible to secure the buckling strength when a person sits on the chair 1. The amount cannot be effectively reduced. Therefore, it is desirable to carry out the gas injection molding method with an appropriate amount of resin determined according to the size of the chair 1 and the thicknesses of the seat 11 and the legs 12.

Further, in this embodiment, the seat portion 11 and the leg portion 12 are made thick as a whole to form the hollow portion 13 therein. However, it is not necessary to make the whole thick as described above. It is also possible to thicken only the leg portion 12 that requires buckling strength and form the hollow portion 13 inside this.

Furthermore, since the leg portion 12 is thick,
As shown in FIGS. 3 and 4, the lower end of the leg 12 has a recess 1
5, the anti-slip rubber 2 can be provided in the recess 15 so as to be flush with the leg 12. As a result, the entire chair 1 can be neatly finished in appearance without the rubber 2 protruding.

The seat portion 11 may have a circular shape, and the leg portions 12 may be formed at equal intervals from the seat portion 11.

[0021]

As described above, according to the present invention, the buckling load resistance is secured by forming at least the leg portions in a thick wall shape, and the amount of the resin material corresponding to the hollow portion is reduced. Therefore, it becomes an inexpensive chair with excellent buckling strength.

Further, since the legs are formed thick to secure the buckling load resistance, it is possible to form a chair excellent in design without being restricted in design.

Furthermore, since there is no structural projection such as a rib on the outer surface of the chair, the scale can be easily maintained without the accumulation of scale.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outline of the overall configuration of a chair.

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

FIG. 3 is a partial cross-sectional view showing another embodiment of the leg portion.

FIG. 4 is a partial perspective view showing another embodiment of the leg portion.

[Explanation of symbols]

 1 Chair 11 Seat 12 Leg 13 Hollow

Claims (1)

[Claims] 1. A resin chair in which a seat portion and a leg portion extending from the seat portion are integrally injection-molded, and at least the leg portion is formed in a thick-walled shape having a hollow portion. A chair characterized by that.