JP2566946Y2 - Chair - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to chairs for grandstands, which are installed in places where an unspecified number of spectators use, such as stands for baseball stadiums, athletics stadiums, gymnasiums, and multipurpose halls. More particularly, the present invention relates to a simple chair using a flip-up seat plate made of synthetic resin.

[0002]

2. Description of the Related Art A large number of chairs for spectators, which are arranged in a large number on stands, seats, etc., have rigid legs erected on the floor, and a seat plate and a backrest are placed between the left and right legs. There are many simple types with a The seat plate is of a flip-up type that is automatically raised and rotated by a spring force or the like when a seated person leaves the seat from a substantially horizontal state where the seat can be seated, and the backrest is fixedly provided in a slightly backward tilted state. Is common.

[0003] Further, the legs of such chairs for the grandstand are made of metal such as cast iron, but the seat plate and the backrest are made of synthetic resin which can be manufactured easily and reduce the cost.
There are many molded articles or blow molded articles made of organic materials such as polyester and polyethylene.

[0004]

[Problems to be Solved by the Invention] By the way, in places such as baseball stadiums, athletics stadiums, gymnasiums and the like, and seats in multipurpose halls used by an unspecified number of spectators, newspapers discarded on the floor by spectators. There is a danger that a cigarette fire may ignite a paper waste such as a paper waste and a trash waste such as a Styrofoam container, causing a fire. Therefore, it is natural that fire prevention and fire spread prevention measures must be taken to prevent such fires. However, the fire prevention measures for the grandstand chair itself cannot be said to be perfect.

That is, as described above, the seat plate and backrest of the seat for the grandstand are often made of synthetic resin such as a flammable FRP molded product or a blow molded product made of an organic material such as polyester or polyethylene. So, when the garbage discarded on the floor below it ignites with a cigarette fire and burns up, it immediately burns to the nearest flammable synthetic resin seat plate, and then leans back. There is also a danger that the fire spreads to the chair next to it and may cause a fire. However, the seats and backrests of the current chairs for grandstands use organic materials as described above. It is impossible with technology.

The present invention has been made in view of the above-mentioned circumstances, and the object thereof is that, despite the use of a flammable synthetic resin seat plate, garbage and the like are flared up on the lower floor surface. Even providing a chair excellent in fire prevention measures that can prevent burning out to the seat plate immediately, greatly delay the spread of fire, increase the evacuation time of the audience, and minimize the disaster. It is in.

[0007]

In order to achieve the above object, the chair according to the present invention has a flip-up seat plate made of synthetic resin.
When the seat plate stands upright on a chair attached to a metal leg
At least the end face of said seat plate facing downward, lies in the additionally provided a metal cover plate having a fire resistance.

[0008]

According to the chair having the above-mentioned structure, despite the use of a flammable synthetic resin seat plate, even if refuse or the like burns on the lower floor surface, the seat can be left unattended. The lower edge of the board,
That is , a metal cover plate having fire resistance is provided on the end face portion facing the lower side of the standing seat plate, or the metal cover plate is guarded by this metal cover plate, and fire is applied to the seat plate. It will not burn out immediately, and garbage waste etc. will naturally extinguish, or even if it is not, it will take a considerable time until the seat plate is ignited and the fire spreads, and in the meantime someone notices and digests and spreads the fire. You can either prevent it or allow the audience more time to evacuate, minimizing disasters.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, FIG. 2 shows an entire simplified chair for a grandstand installed at a place used by an unspecified number of spectators, such as a stand of a baseball stadium, an athletic stadium, a gymnasium, and a multipurpose hall. Here, a single chair is illustrated, but the same applies to a connected chair having a plurality of seats in a horizontal row. In this figure, reference numeral 1 denotes a pair of left and right legs which also serve as side plates, standing on the floor, 2 denotes left and right legs 1, and a seat plate which is attached to a substantially middle stage between the 1 and 3; The backrest is disposed at a rearward position above the plate 2 in a slightly inclined state. The seat plate 2 is rotatably mounted between the left and right legs 1 and 1 via pivots 5 projecting from the left and right frames 4 shown in FIG.
It is of a flip-up type in which when a seated person leaves the seat from a substantially horizontal falling state in which the seat can be seated, the seat is automatically raised and rotated by spring force or the like. The backrest 3 is fixed to a substantially upper half of a rear side surface of the left and right legs 1 and 1 by an appropriate means.

The left and right legs 1, 1 are made of a highly rigid metal such as cast iron. The seat plate 2 and the backrest 3 are each made of a synthetic resin, particularly a synthetic resin molded product such as a flammable FRP molded product or a blow molded product (integral hollow molded product) made of an organic material such as polyester or polyethylene. This remains a certain disaster prevention measures on issues the seat plate 2 when litter abandoned on the lower side of the floor flaming like cigarette is ignited, as shown in FIG. 1, the lower side when standing To
The end surface of the seat plate 2, specifically, the end surface of the seat plate 2 and its end surface
A metal cover plate 7 having fire resistance is attached to a lower surface (a range from substantially the rear half portion of the seat lower surface to a rear end rising surface) up to a lower surface portion near an end surface connected to the end surface . The metal cover plate 6 is formed by bending a thin metal plate such as an iron plate or an aluminum plate into an L shape, and functions as a fire guard.

However, if the chair is configured as described above,
Despite the use of the flammable synthetic resin seat plate 2, even if garbage or the like burns on the lower floor, the user leaves the seat.
Since a metal cover plate having fire resistance is attached to the lower end portion of the seat plate 2 in the state , the fire may be immediately burned to the seat plate 2 by being guarded by the metal cover plate 6. Or the garbage will naturally extinguish,
Even if it is not the case, it takes a considerable amount of time to ignite the seat plate and spread the fire, and during that time someone notices and digests it and can prevent the spread of the fire, or the audience can have enough time to evacuate and minimize the disaster Will be kept to a minimum.

According to the experimental results, when a newspaper of about 300 g is put on the floor just below the center of the seat plate 2 of the chair and ignited, the conventional (current) blow-molded chair made of polyethylene uses the newspaper. After ignition, the fire spread to the lower end of the seat in 1 minute and 15 seconds, spread to the lower end of the back in 7 minutes and 0 seconds, and the seat and back were completely burned in about 20 minutes. In the chair in which the metal cover plate 6 having fire resistance was attached to the lower surface of No. 2, no fire spread occurred even when about 300 g of the newspaper was burned out.

[0013]

[0014]

[Effect of the Invention] The chair of the present invention is in the state of leaving the seat as described above.
A fire-resistant metal cover plate is attached to the end face that faces downward when the seat plate stands up, so the lower floor surface despite the fact that the seat plate itself is made of flammable synthetic resin Even if garbage and debris burns up, the metal cover plate guards it and prevents the fire from immediately burning on the seat plate, greatly delaying the spread of fire, increasing the evacuation time of the audience, and reducing disaster. Excellent effects can be obtained for fire prevention measures that can be minimized.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view of a seat plate according to an embodiment of the present invention, viewed from a lower rear side of a seat plate.

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

[Explanation of symbols]

1 ... legs, 2 ... seat plate, 3 ... backrest, 6 ... metal cover plate.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Ryoyoshi Yamazaki 1-2-2, Yurakucho, Chiyoda-ku, Tokyo Kotobuki Co., Ltd. (56) References 428645 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A jump made of synthetic resin which stands up as one leaves a seat.
The raised seat plate and the synthetic resin backrest rest on metal legs.
In the chair attached, an end surface portion of the seat plate facing downward when the seat plate stands upright
A chair, characterized in that it has additionally provided a metal cover plate having a fire resistance.