JPH04128646U - Chair - Google Patents

Abstract

(57) [Summary] [Purpose] Even though the seat plate 2 is made of an easily flammable synthetic resin, even if garbage and debris ignites on the floor below, the flame will spread to the seat plate immediately. To provide a chair excellent in fire prevention measures, which can prevent fires from occurring, greatly delay the ignition and spread of fire, buy time for evacuation of spectators, and minimize disasters. [Structure] A hollow cartridge 6 is provided at least at the bottom of a seat plate 2 made of synthetic resin that is attached and supported by metal legs, and a filler having a high specific heat such as water 8 is sealed inside the hollow cartridge 6.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is mainly used for stands and multipurpose halls such as baseball stadiums, track and field stadiums, and gymnasiums. Regarding chairs for bleachers installed in places such as auditoriums that are used by an unspecified number of spectators. In particular, the present invention relates to a simple chair using a seat made of synthetic resin.

0002

[Conventional technology]

The chairs for the bleachers, which are arranged in large numbers in the stands and audience seats mentioned above, are Highly rigid legs are set up on the floor, and a seat plate and backrest are attached between the left and right legs. There are many simple types. The seat board is placed in an approximately horizontal position where the seated person can leave the seat. It is a flip-up type that automatically stands up and rotates due to spring force, and the backrest is slightly rearward. Generally, it is fixedly provided in a tilted state.

0003 In addition, the legs of such bleacher seats are made of metal such as cast iron, but the seats and backrests are also made of metal such as cast iron. It is made of synthetic resin, which is easy to manufacture and reduces costs, especially FRP molding, which is easily flammable. There are many blow-molded products made of organic materials such as polyester and polyethylene. .

0004

[Problem that the idea aims to solve]

By the way, stands and multi-purpose halls such as baseball stadiums, track and field stadiums, and gymnasiums mentioned above In areas used by an unspecified large number of spectators, such as the auditorium seats of concert halls, there are places where spectators can dispose of waste on the floor. Cigarettes can ignite waste paper such as newspapers, Styrofoam containers, etc. Since there is a risk of a fire occurring due to and measures to prevent the spread of fire must be taken. However, the seats in the bleachers The reality is that fire prevention measures for things cannot be said to be perfect.

[0005] In other words, as mentioned above, the seats and backrests of the seats for the bleachers are made of flammable FRP molded products or Synthetic resins such as blow molded products made of organic materials such as polyester and polyethylene Since the product is often a molded product, the trash thrown on the floor beneath it is a source of cigarette smoke. If a fire ignites the fire, place it on the nearest flammable synthetic resin seat plate. The fire spread quickly and spread to the backrest and the chair next to it, causing a huge fire. There is a risk of falling asleep. Having said that, the seats and backrests of the chairs for the current bleachers are mentioned above. Due to the nature of using organic materials such as Modification of such materials is not possible with current technology.

[0006] The present invention was developed in view of the above circumstances, and its purpose is to Despite the use of a wooden seat board, garbage and other debris were caught on fire on the floor below. Even if the fire spreads quickly, it can be prevented from immediately spreading to the seat plate, greatly delaying the ignition and spread time, and making it easier to observe. Excellent fire prevention measures that can buy customers time to evacuate and minimize disasters. It's about providing chairs.

[0007]

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the chair of the present invention has a metal leg that is attached and supported. A hollow part is provided separately or integrally at least in the lower part of the seat plate made of synthetic resin, and inside this hollow part It has a structure in which a liquid such as water or a filler having a high specific heat in the form of gel or powder is sealed.

[0008]

[Effect]

According to the chair with the above configuration, even though the seat plate is made of flammable synthetic resin, Even if garbage and debris burns up on the floor below, at least the bottom of the seat board will be covered. A hollow part is provided, and the hollow part is filled with a liquid such as water, or a gel or powder having a high specific heat. Since the filling material is enclosed, the lower part of the seat plate has a heat absorption effect due to the filling material with high specific heat. However, the temperature does not rise easily due to the fact that the fire may quickly spread to the seat board. Either the garbage and other debris will naturally extinguish the fire, or even if not, the fire will ignite on the seat board and spread. It took quite a while for the fire to burn out, and during that time someone noticed and extinguished it to prevent the fire from spreading. It is possible to prevent natural disasters, or to buy time for spectators to evacuate, thereby minimizing disasters. It will be possible to keep it to a minimum.

[0009]

【Example】

Hereinafter, one embodiment of the present invention will be described based on the drawings. First, Figure 3 shows baseball fields and track and field An unspecified number of spectators can use the stands in stadiums, gymnasiums, etc., and the seats in multipurpose halls. This figure shows the entire simple type of bleacher chairs that are installed in the place where they will be used. alone here Although a chair is shown as an example, the same applies to a connected chair having a plurality of seats in a horizontal row. here In the figure, 1 is a pair of left and right legs that are installed on the floor and also serves as side plates, and 2 is the left and right legs 1, 1 phase. The seat plate is installed horizontally in the middle of each other, and 3 is the upper rear part of the seat plate 2. This is a backrest that is placed in a slightly backward position. The seat plate 2 is the left and right frame shown in Figure 1. The left and right legs 1 are rotatable between the left and right legs 1 through pivot shafts 5 protruding from the arm 4, respectively. When the seat is installed and the seated person leaves the seat from an approximately horizontal fall position where the seat can be seated, a spring force is applied. It is a flip-up type that automatically stands up and rotates. The backrest 3 is located on the left side. It is fixed to substantially the upper half of the rear surface of the right legs 1, 1 by appropriate means.

0010 Here, the left and right legs 1, 1 are made of highly rigid metal such as cast iron. Seat board 2 and Each backrest 3 is made of synthetic resin, especially flammable FRP molded product or polyester. Compounds such as blow molded products (integrated hollow molded products) made of organic materials such as It is a resin molded product. If this continues, the trash thrown on the floor below will cause a cigarette to burn. If a fire breaks out, the seat plate 2 will catch fire, which is a problem in terms of disaster prevention measures. As shown in Figure 2, the lower part of the seat plate 2 (as it is an automatic flip-up type, the lower part A hollow cartridge separately molded to form a part of the seat (the rear end of the seat) 6 are removably connected by screws 7 or the like. This hollow cartridge 6 has a seat plate. It is made of the same material as 2 by blow molding, etc., and has filling holes at appropriate locations on the top side. (not shown), and a filling material with high specific heat is introduced into the hollow cartridge 6 from the filling port. Fill the hollow with water 8 and then plug or heat seal the filling port. Water 8 is sealed inside the cartridge 6.

[0011] However, if the chair has the above-mentioned configuration, the seat plate 2 made of flammable synthetic resin may be used. Even if garbage or debris burns up on the floor below, the seat plate 2 Water 8 with a high specific heat is sealed inside a hollow cartridge 6 constituting the lower part of the Therefore, the lower part of the seat plate 2 has a high heat absorption effect due to the internal water 8 with high specific heat. This prevents the fire from spreading to the seat plate 2 quickly. The fire will naturally extinguish due to debris, garbage, etc., or even if it does not, the seat board will catch fire and the fire will spread. It took a considerable amount of time, and during that time someone noticed and extinguished the fire to prevent the fire from spreading. Or, you can buy time for the audience to evacuate and minimize disasters. You will be able to earn money.

0012 According to the experimental results, approximately 300g of newspaper was placed on the floor directly below the center of the seat plate 2 of the chair. If you place a piece of paper and ignite it, a conventional (current) polyethylene blow-molded chair will burn. After the newspaper ignited, the fire spread to the lower end of the seat board in 1 minute and 15 seconds, and the fire spread to the lower end of the seat back in 7 minutes and 0 seconds. The fire spread to the lower part of the seat plate 2, and the seat board and backrest were completely destroyed in about 20 minutes. In a chair equipped with an empty cartridge 6 and filled with water 8, the weight of the empty cartridge 6 is approximately 300 g. The fire did not spread even after burning out an amount of newspaper.

[0013] Note that although water 8 is sealed in the hollow cartridge 6, other than water 8 may be filled with water having a high specific heat. It is also possible to enclose liquid, gel-like, or powder-like fillers with high specific heat. Also seat board A hollow cartridge 6 is provided separately from the seat plate 2, but this is formed integrally with the seat plate 2. In addition, if the seat plate itself has a hollow structure by blow molding, It is also possible to fill the seat plate with a filler such as water. Furthermore, as mentioned above, the backrest 3 A hollow part may also be provided at least in the lower part of the hollow part, and a filler having a high specific heat may be filled therein.

[0014]

[Effect of the idea]

As mentioned above, the chair of the present invention consists of a seat plate made of synthetic resin that is attached and supported by metal legs. At least a separate or integral hollow part is provided in the lower part, and a liquid such as water or the like is placed in this hollow part. The seat board itself is made of flammable synthetic wood because it is filled with a gel-like or powdery filler with high specific heat. Even though it is made of fat, it will not disturb even if garbage or other debris is caught on fire on the floor below. The temperature at the bottom of the seat board does not rise easily due to the heat absorption effect of the filler with high specific heat. Therefore, it is possible to prevent the fire from immediately spreading to the seat plate, and the time for ignition and spread of fire is significantly delayed. This is an excellent fire prevention measure that buys time for spectators to evacuate and minimizes disasters. You can get the desired effect.

[Brief explanation of drawings]

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

FIG. 2 is a sectional view taken along line A-A in FIG. 1.

FIG. 3 is a perspective view showing the entire chair.

[Explanation of symbols]

1... Legs, 2... Seat plate, 3... Backrest, 6... Hollow part (hollow cartridge), 8... Filler (water).

Claims (1)

[Scope of utility model registration request] Claim 1: A chair that is attached and supported by metal legs and is provided with a seat plate and a backrest made of synthetic resin, wherein a hollow part is provided separately or integrally at least in the lower part of the seat plate, and a hollow part is provided inside the hollow part. 1. A chair comprising a liquid such as water, a gel or powder filler having a high specific heat.