JPH10205246A - Fire smoke shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the function of an emergency exit for a shutter curtain by attracting a door body made of the same fire-resistive sheet as the curtain to the emergency exit by a bonded magnet. SOLUTION: The upper end section of a door body 3 consisting of the same fire-resistive sheet as a shutter curtain 1 is sewn at the upper end part of an emergency exit 2 bored at the lower end part of the curtain 1, and the door body 3 is installed the emergency exit 2 in a freely open-close manner. Bonded magnets 7, 11 are mounted at the left-right edge parts 4, 5 and lower edge section 6 of the emergency exit 2 and bag sections set up at the left-right edge parts 8, 9 and lower edge section 10 of the door body 3 by housing, etc., respectively, and the emergency exit 2 is closed by the door body 3 by the attraction of the bonded magnets. Fire-resistive Velcroes are juxtaposed near the magnets 7, 11, and the opening of the emergency exit 2 is prevented even when the attractive force of the magnets 7, 11 is lowered at a high temperature. Accordingly, the emergency exit is opened and a man can escape even when the man fails to escape while smoke and a flame can be interrupted because no clearance is formed in the emergency exit even when the shutter curtain is deflected by hot air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof and smokeproof shutter.

[0002]

2. Description of the Related Art Conventionally, fireproof and smokeproof shutters generally use metal slats. For example, Japanese Patent Application Laid-Open No. 48-7553 discloses a fireproof sheet that replaces a metal slat. A fireproof and smokeproof shutter using a shutter curtain has been proposed.

In the fireproof and smokeproof shutter disclosed in the above publication, a rod-shaped weight is attached to the lower end of the fireproof sheet, and in the event of a fire, the shutter curtain constituted by the fireproof sheet is weighted by the weight. , Descends and is closed.

However, in such a configuration, when the fire and smoke prevention shutter is closed, there is a problem that a person who has lately escaped has to go under the fire and smoke prevention shutter while lifting the rod-shaped weight.

[0005]

In order to solve this problem, for example, Japanese Patent Laid-Open Publication No. Hei 8-164218 discloses that a shutter curtain is divided into a number of strip-like fire-resistant sheets.
A technique is disclosed in which a rod-shaped weight is attached to the lower end of each refractory sheet, and a magnet is attached to the lower surface of the weight, and the magnet is attracted to a metal plate arranged on the floor surface.

Although the shutter curtain having such a structure makes it easy for a person who has lately escaped to pass through, the belt-shaped refractory sheets are separated from each other, so that when the sheet is bent by hot air at the time of a fire or the like. There is a possibility that a gap may be formed in the space and smoke and flames may not be shut off.

The present invention has been made in order to solve such a problem, and a gap may be generated in an emergency exit even when a fire-resistant sheet constituting a shutter curtain is bent by hot air in a fire. It is another object of the present invention to provide a fireproof and smokeproof shutter that can prevent the opening of an emergency exit even in the event of a high temperature during a fire.

[0008]

Means for Solving the Problems A first invention of the present invention is:
In a fire and smoke shutter using a fire-resistant sheet for the shutter curtain, a door that can be opened and closed with a similar fire-resistant sheet is provided at the emergency exit opened in the shutter curtain. Plate-like bonded magnets are respectively attached to the edges of the door body, and the door body closes the emergency exit by the attraction of these bonded magnets.

A second invention is characterized in that the opening edge of the emergency exit and the corresponding edge of the door body are formed as bags, respectively, and the bag magnets are stored in the bags, respectively. The present invention is characterized in that a fire-resistant velcro is provided alongside the opening edge of the emergency exit and the corresponding edge of the door body.

[0010]

According to the present invention, the openable and closable door for closing the emergency exit of the shutter curtain can be firmly attracted by the bonded magnets attached to each other or the refractory magic tape attached thereto. For this reason, when the fire-resistant sheet constituting the shutter curtain bends due to the hot air at the time of a fire, the warp follows the warp and no gap is formed in the emergency exit. In addition, the addition of fire-resistant velcro prevents opening of the emergency exit even if the magnetic force of the weak bond is lost at high temperatures.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The bonded magnet used in the present invention is:
The magnet powder is formed into a flexible plate by using a synthetic resin or rubber as a binder. In addition, it is preferable to provide a fire-resistant magic tape together with the bonded magnet.

Various types of sheet materials can be used for the refractory sheet used as the shutter curtain. For example, as a base material, silica cloth which can withstand high temperatures up to about 1000 ° C. and is relatively inexpensive is used. Used and impregnated with PTFE dispersion into this silica cloth in consideration of damage, so that the friction resistance when opening and closing the shutter is small, it is hard to be damaged by friction, and the fireproof sheet blocks smoke and flame. To add functions,
One coated with chlorosulfonated polyethylene on one side is mentioned.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic explanatory view showing an example of use of a fire and smoke prevention shutter according to the present invention, FIG. 2 is a schematic explanatory view showing the different example, and FIG. 3 is an explanatory view showing a method of attaching a bond magnet. .

As shown in FIG. 1, an emergency exit 2 is provided at the lower end of a shutter curtain 1, and a door 3 is provided at the emergency exit 2. The door 3 can be configured to be openable and closable, for example, by using a fire-resistant sheet slightly larger in size than the emergency exit 2 and sewing the upper end thereof to the upper end of the emergency exit 2.

Plate-like bond magnets 7 are attached to the opening edges of the emergency exit 2, specifically, the left and right edges 4, 5 and the lower edge 6 of the emergency exit 2. This bonded magnet 7
Is formed into a flexible plate shape by binding a magnet powder to a synthetic resin or rubber.

The edges of the door body 3 for closing the emergency exit 2, specifically, the left and right edges 8, 9 of the door body 3 corresponding to the left and right edges 4, 5 and the lower edge 6 of the emergency exit 2, and the lower edge Bond magnets 11 similar to the above-described bond magnets 7 are attached to the part 10, respectively, and the door 3 is provided with the bond magnet 7 of the emergency exit 2 and the door 3
Are bonded to each other, and the door body 3 is
Emergency exit 2 is closed.

As shown in FIGS. 3 (a) and 3 (b), the bonding method of the bonded magnets 7 and 11 is as follows.
2. It is preferable to attach the bond magnets 7 and 11 directly to the end of the door body 3 via the cord material 13 or to provide a bag portion 14 with the cord material 13 and store the bond magnets 7 and 11 therein. Can select any known means.

As shown in FIG. 2, near the bond magnets 7 and 11 provided on the emergency exit 2 and the door body 3, refractory magic tapes 15 and 16 are provided side by side. This is for preventing the magnetic force of the bond magnets 7 and 11 from being lost due to the high temperature at the time of fire, and preventing the emergency exit 2 from being opened due to the insufficient attraction force.

[0019]

According to the present invention having the above configuration, the following effects can be obtained. People who are late in the event of a fire can easily evacuate by opening their emergency exits. Even if the fire-resistant sheet constituting the shutter curtain bends due to hot air during a fire, etc., there is no gap in the emergency exit due to the mutual adhesion of the bonded magnets and the fire-resistant velcro to prevent smoke or flame. Can be shut off. By providing the fire-resistant velcro together with the bonded magnet, the emergency exit is not opened even if the magnetic force of the magnet is lost due to the high temperature at the time of fire.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing an example of use of a fireproof and smokeproof shutter according to the present invention.

FIG. 2 is a schematic explanatory view showing the different example.

FIG. 3 is an explanatory view showing a method of attaching a bond magnet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shutter curtain 2 Emergency exit 3 Door body 7,11 Bond magnet

Claims (3)

[Claims] 1. A fireproof and smokeproof shutter using a fireproof sheet for a shutter curtain, wherein an emergency door provided on the shutter curtain is provided with a door body that is formed of a similar fireproof sheet and that can be opened and closed. A fireproof and smokeproof shutter characterized in that plate-like bond magnets are respectively attached to the peripheral portions of the door and the corresponding door body, and the door body closes the emergency exit by the attraction of these bond magnets. 2. The fire prevention system according to claim 1, wherein the opening edge of the emergency exit and the corresponding edge of the door are formed as bags, and the bag magnets are respectively housed in the bags. Smoke-proof shutter. 3. The fireproof and smokeproof shutter according to claim 2, wherein a fire resistant velcro tape is provided alongside the opening edge of the emergency exit and the corresponding edge of the door body.