JP2001120678A - Fire area screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely divide a fire side and a non-fire side even when receiving a wind pressure generated at the time of a fire. SOLUTION: At the lower end of a screen 2 having non-flammability or fire-resistance, a weight section 5 is provided. In the case of a fire, the screen 2 is vertically hung from a ceiling side. The weight section 5 and a location 6, which is confronted with the weight section 5 when being vertically hung, are attract-fixed by magnet, and thus, the internal space of a building is partitioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen device for a fire-prevention compartment, which hangs down from a ceiling side to prevent the spread of a building or the diffusion of smoke by partitioning the interior space of the building. The present invention relates to a screen device for a fire prevention compartment that can reliably shut off a fire side and a non-fire side even when received.

[0002]

2. Description of the Related Art Conventionally, as a fire prevention device for preventing the spread of fire and the diffusion of smoke by shutting off the interior space of a building between a fire side and a non-fire side in the event of a fire, a steel fire shutter having a number of slats connected thereto. Instead, a screen device for a fireproof compartment using a screen curtain rich in noncombustibility or fire resistance is known.

[0003] The screen device for a fireproof compartment is, for example, disclosed in Japanese Patent Application Laid-Open No. H10-155925, a screen curtain which is hung from the ceiling side and partitions the interior space of the building, and which is rich in noncombustibility or fire resistance. And a weight portion attached to the lower end of the screen curtain. Normally, it is wound around a take-up shaft arranged under the ceiling or under a beam, but when a fire occurs it hangs down from the ceiling and the weight at the lower end reaches the floor, causing a fire in the interior space of the building. Side and non-fire side.

[0004]

The screen device for a conventional fire protection compartment described above has a thin and lightweight screen curtain, so that when the wind pressure generated during a fire is received, the screen curtain expands like a sail and the weight rises. There is a fear that a gap may be formed between the floor and the floor. When this gap is formed, the fire side and the non-fire side communicate with each other, so that there is a problem that smoke shielding performance and the like are reduced.

It is an object of the present invention to solve the above-mentioned problems and to provide a screen device for a fire-prevention compartment which can reliably shut off a fire side and a non-fire side even when receiving a wind pressure generated in a fire.

[0006]

In order to solve the above-mentioned problems, the present invention will be described with reference to FIGS. 1 to 3 showing an embodiment of the present invention. It is what was constituted. That is, the present invention 1
Is a non-combustible or fire-resistant flexible screen curtain that hangs down from the ceiling side and partitions the interior space of the building
(2) A screen device for a fire-prevention compartment, comprising a weight portion (5) attached to a lower end thereof, wherein the weight portion
(5) and the part where this weight part (5) faces when hanging
(6) is characterized by being configured to be able to be attracted and fixed by magnetic force.

A second aspect of the present invention is a non-flammable or fire-resistant flexible screen curtain (2) that hangs down from the ceiling to partition the interior space of the building, and a weight (5) attached to the lower end thereof. A screen device for a fire prevention compartment comprising: a screen curtain (2) having an uneven shape (8).

A third aspect of the present invention is the same as the second aspect of the present invention, except that the configuration of the first aspect of the present invention is provided.

The screen curtain can be made of a fabric made of inorganic fibers such as glass, boron, ceramic, alumina, and stainless steel. The screen curtain is so dense that warps and wefts are in close contact with each other, such as satin weave. Woven into
Further, those which do not lose smoothness and flexibility are preferable. Further, the cloth is coated on at least one side with a flame-retardant material such as a flame-retardant resin such as a vinyl chloride resin or a silicon resin, a metal hydroxide, or a mineral to substantially eliminate air permeability and block. Those with improved smoke performance are preferred.

[0010] The structure in which the weight portion and the portion facing the weight portion at the time of hanging can be attracted and fixed by magnetic force is such that permanent magnets are disposed on both the weight portion and the facing portion to be attracted and attracted. A configuration in which a permanent magnet is disposed on one side and a material that is attracted by magnetic force, such as iron, is disposed on the other side and is attracted. The uneven shape refers to a shape that is stretched flat when subjected to a force, such as a vertical or horizontal waveform.

The present invention 1 operates as follows. That is, the screen curtain is normally wound around a winding shaft arranged under the ceiling or under a beam, and when the weight portion attached to the lower end of the screen curtain reaches the floor surface when a fire occurs, the weight is lowered. The part is magnetically attracted to a part facing the part, and is firmly fixed.

The present invention 2 operates as follows. That is, since the screen curtain has an irregular shape, when the screen curtain receives a wind pressure generated by a fire, the irregular shape is elongated and the wind pressure is absorbed. As a result, the weight is not lifted and is held in contact with the floor.

According to the third aspect of the present invention, since the screen curtain is stretched to absorb the wind pressure and the weight portion is firmly fixed to the floor, the interior space of the building is more surely divided between the fire side and the non-fire side. Will be shut off.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a first embodiment of the present invention. FIG. 1 is a partially cutaway perspective view of a screen device for a fire compartment, and FIG. 2 is a longitudinal sectional side view of the screen device for a fire compartment.

As shown in FIG. 1, the screen unit (1) for a fire prevention compartment normally has a screen curtain (2) wound around a winding shaft.
The screen curtain (2) is wound around (3) and disposed on a ceiling or a beam, so that the screen curtain (2) can be lowered from the ceiling to the floor (4) when a fire occurs.

The screen curtain (2) is made by weaving an inorganic fiber such as a glass fiber into a satin weave or the like and coating one or both sides with a flame-retardant material.
(5) is attached. When the regulation of the rotation of the winding shaft (3) is released in the event of a fire, for example, by the action of a fire detection switch, the screen curtain (2) descends due to the weight of the weight (5) and the like, and the weight (5) When the floor reaches the floor (4), the interior space of the building is partitioned, and the spread of the building and the diffusion of smoke are prevented.

Permanent magnets (7...) Are arranged on the lower surface of the weight portion (5) and the portion (6) of the floor surface (4) where the weight portion (5) faces when hanging down. The weight portion (5) reaching the floor surface (4) is firmly attracted and fixed to the opposed portion (6) by the magnetic force.

The screen curtain (2) is preliminarily provided with a waveform (8) in which peaks and valleys extend vertically.
According to (8), the screen curtain (2) has elasticity in the left-right direction. As shown in FIG. 2, when the screen curtain (2) receives wind pressure (9) due to a fire, the screen curtain (2) expands like a sail, as shown by a virtual line, but the waveform (8) expands and the wind pressure (9) increases. Since the weight portion (5) is absorbed, the weight portion (5) is held in a state of being in contact with the floor surface (4) without being lifted.

FIG. 3 shows a second embodiment of the present invention, in which a screen curtain (2) is given in advance a waveform (8) in which peaks and valleys extend in the left-right direction. 2)
Has elasticity in the vertical direction. This screen curtain
When (2) receives wind pressure (9) due to a fire, the waveform (8) expands and expands like a virtual line and wind pressure (9) is absorbed, as in the first embodiment, and the weight portion (5) Is the floor
It is held in contact with (4).

In the above embodiment, a vertical or horizontal waveform is applied to the screen curtain. However, the screen curtain of the present invention may have any shape as long as it is stretched flat when subjected to a force. May be formed. Further, in the above embodiment, the permanent magnets are provided on both the weight portion and the opposing portion. However, a permanent magnet may be provided on one of the weight portions, and the other may be a metal or the like adsorbed by the magnet. . Further, the permanent magnets and the like may be disposed discontinuously along the entire length of the weight portion as in the above-described embodiment, or may be disposed continuously instead of this.

In each of the above embodiments, the weight portion and the opposing portion are attracted by magnetic force,
Although the screen curtain has an irregular shape, the screen device for a fire prevention compartment of the present invention may employ any one of the configurations. Also, the winding axis of the screen curtain
In (3), the column is usually set horizontally, but FIGS.
The columnar body shown in (1) may be partially bulged.

[0023]

Since the present invention is constructed and operates as described above, it has the following effects.

(1) According to the first aspect of the present invention, the weight provided at the lower end of the screen curtain and the portion opposed to the weight during the hanging can be attracted and fixed by magnetic force. In this state, the weight portion is securely fixed to the opposing portion by the magnetic force. As a result, even if the screen curtain tries to expand due to the wind pressure generated by the fire, there is no danger that the weight will separate from the floor, and the internal space of the building can be reliably blocked between the fire side and the non-fire side. it can.

(2) According to the second aspect of the present invention, since the screen curtain is formed with an uneven shape, when the screen curtain receives a wind pressure generated by a fire, the uneven shape is elongated and the wind pressure is absorbed. There is no danger that the weight portion will be lifted from the floor by the wind pressure, and the internal space of the building can be reliably shut off between the fire side and the non-fire side.

(3) According to the third aspect of the present invention, since the screen curtain can be extended to absorb the wind pressure, and the weight portion reaching the floor surface is firmly attracted to the opposing portion by the magnetic force, so that the inside of the building can be more reliably secured. The space can be shut off between the fire side and the non-fire side.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view of a screen device for a fire protection compartment, showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the screen device for a fireproof compartment, showing the first embodiment of the present invention.

FIG. 3 is a diagram corresponding to FIG. 2, showing a second embodiment of the present invention.

FIG. 4 shows a winding shaft of a screen or the like.

FIG. 5 shows a winding shaft such as a screen.

[Description of Signs] 1 ... Screen device for fire prevention compartment, 2 ... Screen curtain, 5 ... Weight portion, 6 ... Part where the weight portion faces when hanging down, 8 ... Unevenness (waveform).

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) E06B 9/20 A (72) Inventor Yuji Kadokawa 2-12-9 Shiba-Daimon, Minato-ku, Tokyo Unitika Glass Fiber F term in the company (reference) 2E042 AA06 BA01 CA00 CB04 CB10 DB16

Claims (3)

[Claims] An incombustible or fire-resistant flexible screen curtain (2) which hangs down from a ceiling to partition an internal space of a building, and a weight portion (5) attached to a lower end thereof. A screen device for a fire prevention compartment, wherein the weight portion (5) and a portion (6) opposed to the weight portion (5) when hanging down can be attracted and fixed by magnetic force. Screen device. 2. A non-combustible or fire-resistant flexible screen curtain (2) which hangs down from a ceiling and partitions an internal space of a building, and a weight part (5) attached to a lower end thereof. A screen device for a fire protection compartment, wherein the screen curtain (2) is formed with an uneven shape (8). 3. The screen device for a fire protection compartment according to claim 2, wherein said weight portion (5) and a portion (6) facing said weight portion (5) when hanging down can be attracted and fixed by magnetic force. .