JP3012233B1 - Peripheral device ignition prevention device for automatic door device of fire prevention specification - Google Patents

Abstract

A relatively simple configuration prevents a rise in temperature to the ignition point of a peripheral device of a fire door, thereby preventing the peripheral device from igniting in the event of a fire and preventing the spread of fire to an adjacent room. To be normal. SOLUTION: An automatic door device (fire door) of a fireproof specification or a door peripheral device 10, 20, 30 installed by a mounting member 12, 22, 32 in the vicinity thereof is dropped at a temperature lower than its ignition temperature. The means to make it exist.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire prevention device for a peripheral device in an automatic door device of a fire prevention specification, and more particularly, to a fire prevention device (hereinafter referred to as a fire door) for preventing fire spread in a fire. The present invention relates to a device for preventing a peripheral device such as a sensor installed on a combustion side from igniting due to high heat.

[0002]

2. Description of the Related Art Generally, a fire door is an automatic door device for keeping a door closed and preventing a fire from burning to an adjacent room when a fire occurs in a building or the like. Fireproof glass is used for the door. However, it is possible to prevent the spread of fire to the adjacent room through the fire door itself, for example, by using a heat-resistant material or a non-combustible material for each member such as the drive mechanism and the link mechanism. However,
When the fire door is an automatic door device, peripheral devices related to the operation of the automatic door, such as detection sensors for opening and closing the door and sensors such as safety sensors, are installed in the door device or in the vicinity thereof.

[0003] In a fire, it is known that the temperature distribution near the fire door due to the heat of combustion becomes higher as the temperature rises above the floor, that is, the temperature of the floor is the lowest. Generally, peripheral devices such as the sensors are installed at a relatively high position. In addition, peripheral devices are often electrical components, and cannot be made only of nonflammable materials. However, peripheral equipment installed in the adjacent room on the non-combustion side may ignite due to temperature rise even when the fire door is closed, and the ignition may cause fire to spread to the adjacent room. Prevention of ignition is required.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional circumstances, the present invention prevents a rise in temperature to the ignition point of peripheral equipment of a fire door by using a relatively simple structure, and reduces the temperature of the surrounding area when a fire occurs. The purpose is to prevent ignition of the equipment and prevent the spread of fire to the adjacent room.

[0005]

According to the present invention, there is provided a fire prevention apparatus for dropping a peripheral device for a door, which is installed by a mounting member in or near the fire door, at a temperature lower than its ignition temperature. Is provided. That is, as described above, focusing on the fact that the temperature distribution near the fire door due to combustion heat has the lowest temperature on the floor, the peripheral devices are automatically dropped on the floor before reaching the ignition point, and It is intended to prevent ignition.

As a specific means for dropping the peripheral device from its installation location, when the mounting member of the peripheral device is a stop shaft such as a screw or a bolt or an adhesive, the mounting member is thermally melted. The peripheral device falls off when the attachment member is damaged at a predetermined temperature. In addition, since the peripheral device is often an electric component, a conductive wire may be wired in such a case. In such a case, the wire is connected by a heat-fusible conductive member such as solder. This prevents the conductive member from breaking at a predetermined temperature so that it does not hinder the peripheral device from falling off. In addition, a weight may be provided on the peripheral device to assist the device from falling off. Therefore, even if the device is a lightweight component, it is possible to promote the damage of the attachment member and the fall of the peripheral device, and to quickly drop the device.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an outline around a fire door A, 1 is a door, 2 is blind, 3 is an upright, 4 is a guide rail. It is. When the fire door A is closed, a fire prevention specification for preventing fire from spreading to an adjacent room (a portion on the near side in the drawing), for example, the door 1 is made of fire-resistant tempered glass and installed in the blind 2. A non-combustible material or a refractory material is used for a driving part, particularly a transmission mechanism. A configuration in which a pedestrian detection sensor 10, a door opening touch switch 20, and a safety sensor 30 are provided as peripheral components of the fire door A, that is, as electric components related to the opening and closing of the door 1 will be described.

The pedestrian detection sensor 10 is a reflection type sensor that automatically detects that a person has approached the door 1.
As shown in FIG. 2 (1), a casing 11 is attached and fixed to the casing 2 with a plurality of bolts 12 and a sensor body is provided in the casing 11.
The sensor body 13 has a wiring 14 connected thereto. The bolt 12 is formed of a heat-meltable member, and is melted at a temperature lower than the ignition point of the sensor body 13 so that the support strength is reduced or damaged. This bolt 12
For example, it is made of acrylic plastic having a melting point of about 100 ° C. The wiring 14 is provided with a heat-fusible conductive member in the middle thereof, for example, a connection portion 15 using a solder material, and the connection portion 15 is melted and disconnected before the sensor body 13 ignites. I do. A weight 16 having an appropriate weight is mounted in the casing 11.

When the temperature of the vicinity of the fire door A rises due to combustion in the event of a fire, the temperature of the detection sensor 10 also becomes high due to heat transfer. When the temperature reaches a predetermined high temperature, the bolt 12 is melted and damaged, and the wiring 14 is connected. The portion 15 is disconnected, and the detection sensor 10 is separated from the blind 2 by its own weight and falls on the floor (see FIG. 2 (2)). Therefore, the detection sensor 10 is in a high temperature range before the sensor body 13 ignites.
From the floor to a relatively low temperature area to prevent ignition.

As shown in FIG. 3A, the touch switch 20 for opening the door is fixed to the door 1 by adhering a frame 21 to the door 1 with an adhesive 22. A switch body 23 is provided in the frame 21. Door 1
The opening operation is transmitted. This touch switch
As the adhesive 22, a heat-fusible material that melts at a temperature lower than the ignition point of the sensor body 23, for example, an acrylic plastic adhesive having a melting point of about 150 ° C. is used. Note that reference numeral 24 in the figure is a weight. Thus,
The touch switch 20 also separates from the door 1 by its own weight and drops to the floor surface because the adhesive 22 melts when a predetermined high temperature is reached due to the temperature rise near the fire door A when a fire occurs. (See FIG. 3 (2)), and ignition is prevented.

As shown in FIG. 4A, the safety switch 30 has a bush 32 attached to the outer periphery of a casing 31 inserted and fixed into an opening 3a of the cubic 3, and the safety switch 30 is fixed to the casing 31. No wiring
34 has a built-in sensor body connected to it. Note that reference numeral 36 in the figure is a weight. The bush 32 is formed of a heat-fusible member like the bolt 12 described above, for example, a polypropylene-based plastic having a melting point of about 100 ° C. A connection portion 35 using a fusible conductive member is provided. Thus, the safety sensor 30 is also provided with a fire door A when a fire occurs.
When the temperature rises in the vicinity and the bush 32 melts when the temperature reaches a predetermined high temperature, the bush 32 melts and exits into the cubic 3, and the weight of the weight 36 is also assisted, and the wiring
The connection portion 35 of the wire 34 is disconnected and falls to the bottom surface in the cubic 3 (see FIG. 4 (2)), thereby preventing ignition.

In the above embodiment, the detection sensor
Although only the touch switch 20, the safety switch 30, and the safety sensor 30 have been described, there are also stickers, warning display boards, and the like, and it is natural that the peripheral devices are not limited to the above-described exemplary devices. Further, in any of the embodiments, the case where the weight is provided is exemplified. However, when the weight of the sensor or the like is large, the weight is not required.

[0013]

According to the present invention, when a fire occurs,
Peripheral devices for fire doors, such as sensors, are separated from the high-temperature area where a fire may occur, and dropped onto the floor, which is a relatively low temperature area. Can be prevented from spreading to the fire. According to the second aspect, the means for dropping the peripheral device is such that a fixing shaft such as a screw or a bolt or an attachment member such as an adhesive is a heat-fusible member, and the attachment member is damaged at a predetermined temperature. Therefore, an inexpensive device with a relatively simple configuration can be provided.

According to the third aspect of the present invention, even when a conductive wire is wired to the peripheral device, the wiring is broken at the time of fire, so that the peripheral device can be reliably dropped before firing. Further, according to the fourth aspect, the weight of the weight can promote the destruction and detachment of the attachment member and the fall of the peripheral device, so that the reliability of the ignition prevention function can be ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outline around an automatic door device (fire door) of a fire prevention specification.

FIG. 2 shows a pedestrian detection sensor, in which (1) is a partially cutaway side view in an attached state, and (2) is a perspective view in a detached state.

FIG. 3 is a side view of a touch switch for opening a door, in which (1) is a partially cutaway side view in an attached state, and (2) is a side view in a detached state.

FIG. 4 is a side view showing a safety sensor, in which (1) is a partially cut-away side view in an attached state, and (2) is a side view in a detached state.

[Explanation of symbols]

A: Fire door (automatic door device of fire prevention specification) 1: Door 2: blind
3: Orientation 10: Passenger detection sensor 12: Bolt
14: Wiring 15: Connection part 16: Weight 20: Touch switch for opening door 22: Adhesive
24: Weight 30: Safety sensor 32: Bush
34: Wiring 35: Connection part 36: Weight

Claims (4)

(57) [Claims] 1. A peripheral device for an automatic door device of a fireproof specification provided with a means for dropping the device at a temperature lower than its ignition temperature in an automatic door device of a fireproof specification or a door peripheral device installed by a mounting member in the vicinity thereof. Fire prevention device for equipment. 2. The peripheral device according to claim 1, wherein the attachment member is a stop shaft or an adhesive, and the attachment member is a heat-fusible member, and the peripheral device falls off when the attachment member is damaged at a predetermined temperature. The fire prevention device according to claim 1. 3. The ignition prevention device according to claim 1, wherein, when the peripheral devices are connected by wiring, the wiring is connected by a heat-fusible conductive member. 4. The ignition prevention device according to claim 1, wherein a weight for assisting the peripheral device is provided on the peripheral device.