JPH1015099A - Screen system for fireproof zone to easily pass person - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and inexpensively execute fire prevention while using a heat resistant and flexible screen made of cloth, to reduce a space for installation, to provide remarkably high fireproof and smoke-proof performance by effectively shielding opening parts inside a building, and further, to let a person easily pass through a screen plane while partitioning it. SOLUTION: A screen 1 is composed of a main body part 1b formed with an opening part 1a for refuge passage in the lower end at the prescribed position and a door part 1c whose upper part is integrally bonded with the main body part while being arranged so as to close the opening part. A sub weight bar 6 at the lower end of the door part is dynamically loosely restricted to a main weight bar 5 at the lower end of the main body part by suitable coupling means (wires 7 and coil springs 8), remarkably displaced in respect to the main weight bar while receiving external force applied in the case the person tries to pass, and recovered to an ordinary position parallel in contact with the main weight bar by restricting force when there is no external force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire prevention / smoke prevention compartment structure for preventing the spread of fire in a building and the spread of smoke, and more particularly to the use of a fire-resistant screen made of a woven fabric of glass fiber or silica fiber. And a screen device for a fire-prevention compartment, which allows a person to easily pass through.

[0002]

2. Description of the Related Art In order to prevent the spread of fire and the spread of smoke in a building in the event of a fire, and to facilitate evacuation, fire and smoke prevention compartments must be appropriately set according to a certain floor area or use of a room. Evacuation routes must be secured.
From this viewpoint, equipment such as a fire barrier, a smoke hanging wall, a fire shutter, and a fire door are systematically arranged.

[0003] As is well known, a fireproof shutter is a steel shutter having fireproof performance, and is usually of an electric winding type having a structure in which a large number of slats are connected, and is wound in an upper part and stored. It operates between a state in which it is pulled down and the opening in the building is blocked. Due to the structure of the fireproof shutter, the shutter itself cannot be incorporated with a fireproof door serving as an evacuation passage, so that when the shutter is lowered and the opening is closed, no person can pass completely. Therefore, in order to secure an evacuation passage, it is necessary to install a fire door in the immediate vicinity of the fire shutter. The fire door automatically closes in the event of a fire and can be pushed open in the evacuation direction at any time.

[0004]

[0005] The performance of fire prevention and smoke prevention can be improved by providing a large number of partitions for fire prevention and smoke prevention at required places. However, ignoring the original functionality and ease of use of the building, it is not possible to install a large number of partitions, the design consistency with the wall, the storage space for everyday use, the ease of evacuation in an emergency It is necessary to think from various aspects, such as the implementation cost, etc., which is troublesome for designers.

Therefore, the present inventors can easily and inexpensively carry out using a heat-resistant flexible cloth screen, require only a small installation space, and effectively shield the opening inside the building. We have been conducting research and development on a screen device for a fire-prevention compartment that exhibits high fire and smoke prevention performance, and that allows people to easily pass through the screen surface in a partitioned state, making it easy to evacuate in an emergency (Reference: Japanese Architecture) Summaries of academic conference abstracts, 3008, August 1995).

[0006] The basic concept of the "screen device for a fireproof compartment through which a person can easily pass" according to the development of the present inventors is that the space inside the building is divided by a fireproof screen extending from the ceiling to the floor, and the screen of the screen is rejected. A slit extending in the vertical direction from the intermediate height portion to the lower portion is formed at an appropriate position to provide an evacuation passage. If a flexible silica cloth or the like is used as the screen, the slit can be easily pushed out by a human hand, and a person can easily pass through the widened gap.

[0007] Research and development were promoted based on such a concept, and various prototypes and experimental evaluations were repeated. As a result, it is possible to improve both the fire and smoke prevention performance of the evacuation passage formed with the slit (increase the heat and smoke blocking performance) and to make it easier for a person to pass through that portion. I found it was not easy. In other words, when a person passes through the slit-type evacuation passage, a person pushes and spreads the slit with his or her hand to create a large gap, but after the person has passed, a large gap was created in the slit part If left as it is, the subsequent fire and smoke protection performance will be significantly reduced. If various measures are taken so that the film form of the slit portion recovers immediately after a person passes and no unnecessary gap remains, trouble tends to occur when a person passes through the portion.

The present invention incorporates the results of research and development from the above viewpoints, and its purpose is to easily and inexpensively implement it using a heat-resistant, flexible cloth screen, and to provide a small installation space. It is small enough to effectively shield the opening inside the building and exhibit considerably high fire and smoke prevention performance,
In addition, it is an object of the present invention to provide a screen device for a fire-prevention compartment that allows a person to easily pass through a screen surface in a partitioned state and is easily evacuated in an emergency.

[0009]

Basically, a screen device for a fire prevention compartment according to the present invention is basically installed so as to hang down so as to cover an opening inside a building, and reaches from a ceiling or under a beam to a floor. Mainly heat-resistant screens whose ends reach walls and columns. Also, the screen is
An opening portion for the evacuation passage reaching the lower end is formed at a predetermined position, and a main body portion is disposed so as to close the opening portion, and an upper portion is integrally joined to the main body portion, and a door portion is formed,
Both sides of the door part and the main body part overlap each other.

In the first invention, a main weight bar is horizontally fixed to a lower end of the screen main body, and a sub weight bar is horizontally fixed to a lower end of the screen door. The sub weight bar and the main weight bar are substantially linear (claim 1). According to a second aspect, in the first aspect, the sub-weight bar is mechanically loosely restrained with respect to the main weight bar by an appropriate coupling means, and applies an external force applied when a person tries to pass through. In addition, a means is provided for displacing the main weight bar greatly and receiving the external force, and for returning to a steady position substantially in contact with and parallel to the main weight bar due to the restraining force (claim 2).

In the third aspect of the present invention, a main weight bar continuous over substantially the entire width is horizontally disposed at a lower end of the screen, and the main weight bar is fixed to a lower end of the screen main body. , Is separated from the lower end of the screen door. A sub-weight bar is horizontally fixed to the lower end of the screen door, and the sub-weight bar is disposed substantially in contact with the main weight bar. Further, the sub-weight bar is mechanically loosely restrained relative to the main weight bar by an appropriate connecting means, and receives a large external force when a person tries to pass through the sub-weight bar, and the sub-weight bar greatly increases relative to the main weight bar. In addition to the displacement, when the external force disappears, the restraining force returns to a steady position in which the main weight bar is almost in contact with and parallel to the main weight bar.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the screen device for a fire protection compartment according to the present invention having the above requirements, the connecting means may be configured to connect the main weight bar and the sub weight bar with an elastic elastic material ( Claim 4). In this case, as the elastic elastic member, a member in which a wire and a coil spring are connected can be adopted (claim 5), and the elastic member that connects the wire and the coil spring is formed of a hollow body. A configuration that penetrates the hollow portion can be adopted (claim 6).

[0013] The connecting means may be configured so that the main weight bar and the sub weight bar are attracted by a magnetic force by a combination of a permanent magnet and a magnetic material.

Further, the width of the overlapping portion between the both sides of the screen door and the screen main body may be increased toward the lower side.

Further, the combination structure of the main weight bar and the sub weight bar allows the sub weight bar to move in one direction away from the screen surface, but prevents the parallel movement in the opposite direction. Alternatively, a one-way structure may be adopted (claim 9).

[0016]

1 and 2 show a schematic configuration of a screen device according to an embodiment of the present invention (corresponding to the third invention). This apparatus mainly includes a heat-resistant screen 1 made of a woven glass fiber cloth or silica cloth. The screen 1 is wound around a shaft 2 that is horizontally arranged below a ceiling or a beam, and hangs vertically from the shaft 2 by its own weight, and a lower end reaches the floor. In addition, both sides of the screen 1 are in contact with the walls and pillars inside the building, and the opening inside the building is the screen 1
It is partitioned off and shut off. At this time, in order to eliminate a gap between both sides of the screen 1 and the building, the guide rails 3 are vertically arranged on the wall surface or the column surface, and the side ends of the screen 1 are accommodated in the grooves of the guide rails 3. It has become. Needless to say, the winding drive device is connected to the shaft 2 so that the screen 1 can be moved up and down electrically, and when unnecessary, the entire screen 1 can be wound up and stored under the ceiling.

The screen 1 has a main body 1b in which an opening 1a for an evacuation passage reaching a lower end is formed at a predetermined position, and a main body 1b arranged so as to close the opening 1b.
The door 1c is integrally joined to the main body 1b. Both sides of the door 1c and the main body 1b overlap each other.
In this embodiment, the width of the screen opening 1a becomes smaller toward the lower side, and the screen door 1 has a uniform width.
The width of the overlapping portion between the both side portions of c and the screen main body portion 1b increases toward the lower side. If this polymerized portion is small, there is little obstruction when people pass.

At the lower end of the screen 1, a main weight bar 5 continuous over almost the entire width is horizontally disposed. The main weight bar 5 is the screen body 1
b, but is separated from the lower end of the screen door 1c that closes the opening 1a. Apart from the main weight bar 5, a sub weight bar 6 is horizontally fixed to the lower end of the screen door 1c. The portion of the main weight bar 5 located directly below the screen door 1c is notched at the top, and is thinner than the portion fixed to the screen main body 1b. Sub weight bars 6 are arranged in parallel with each other on the central notch of the thinned main weight bar 5 in a substantially contact state.

As described above, although the main weight bar 5 and the sub weight bar 6 are combined very close to each other, they are not fixed. As will be described in detail below, the sub-weight bar 6 is mechanically loosely restrained with respect to the main weight bar 5 by an appropriate coupling means, and receives the external force applied when a person tries to pass through, so that the 5 and return to a predetermined arrangement position substantially in contact with the main weight bar 5 due to the restraining force of the coupling means when the external force disappears.

A specific example of the coupling means will be described in detail. The sub weight bar 6 has a hole penetrating in the horizontal direction, and a hole continuous with the through hole is formed in the main weight bar 5. One wire 7 is passed through the through hole of the sub weight bar 6, and both ends of the wire 7 are inserted into holes of the main weight bar 5. In the hole of the main weight bar 5, the wire 7
A coil spring 8 is connected to each end of the coil spring 8, and the other end of the coil spring 8 is fixed to the main weight bar 5. The wire 7 and the two coil springs 8 connected to both ends thereof are elastic elastic members of the main element of the connecting means.

In the above configuration, the entire screen 1 hangs down due to its own weight and the weight of the main weight bar 5 and the sub weight bar 6, and is almost stable in a vertical posture. In addition, the sub-weight bar 6 is mechanically loosely restrained with respect to the main weight bar 5 by the coupling means. That is, since the wire 7 passes through the through-hole of the sub-weight bar 6 and the hole of the main weight bar 5 and an appropriate tension acts on the wire 7 by the elastic force of the coil spring 8, the sub-weight is Bars 6 are arranged in parallel on the main weight bar 5. In this state, as described above, the screen opening 1a is satisfactorily closed by the screen door 1c so that there is almost no gap, and the screen 1 can easily move even if a slight wind pressure or a pressure difference acts. And maintain a stable posture. This provides a significantly higher level of fire protection and smoke protection.

On the other hand, when a person tries to pass through the screen door 1c, the user tries to push the hand or body into the overlapping portion between the side of the screen door 1c and the boundary between the screen main body 1b and push it. This external force acts between the main weight bar 5 and the sub weight bar 6, and is transmitted to the wire 7 and the coil spring 8 connecting them, thereby extending the coil spring 8. In other words, the wire 7 extends on the side of the screen door 1c pushed by the evacuee, the sub weight bar 6 is displaced from the normal position (a position close to and parallel to the main weight bar 5), and the screen main body 1b The space between the door and the screen door 1c is greatly pushed open. A person passes through the open gap. When a person passes, the sub-weight bar 6 and the screen door 1c quickly and reliably return to the normal position due to the self-weight of each member and the spring force of the coil spring 8, as described above. Maintain smoke prevention performance.

Another embodiment of the present invention is shown in FIGS. In this embodiment, the evacuation passage by the screen door 1c is a one-way passage. That is, as shown in FIG. 4, in the mechanical combination of the main weight bar 5 and the sub weight bar 6, the sub weight bar 6 is located on the front side of the main weight bar 5, and from the rear side of the screen 1. It is easy for people to pass through the front side. The sub weight bar 6 gets caught on the main weight bar 5 even if the user tries to pass in the opposite direction. In this embodiment, the fire spread prevention performance and the smoke prevention performance can be further improved with one-way traffic. Further, in this embodiment, the screen door 1c is overlapped on the front side of the screen main body 1b, and the width of the overlapping portion is large and uniform.
In the case of a one-way evacuation passage, even if the fire spread prevention performance and the smoke prevention performance are improved in this way, the ease of passing is not reduced.

[0024]

According to the present invention, a screen device for a fire protection compartment can be easily and inexpensively implemented by using a heat-resistant flexible screen made of cloth, requires a small installation space, and effectively opens an opening inside a building. It provides a very high level of fire and smoke protection when shielded, and allows people to easily pass through the screen in a partitioned state. In particular, it is extremely rational to enhance the fire and smoke prevention performance of the evacuation passage with slits (to increase the heat and smoke blocking performance) and to make it easier for people to pass through that area. Can be compatible.

[Brief description of the drawings]

FIG. 1 is a front view of a screen device according to a first embodiment of the present invention.

FIG. 2 is a plan sectional view of the first embodiment device.

FIG. 3 is a front view of a screen device according to a second embodiment of the present invention.

FIG. 4 is a plan sectional view of the second embodiment device.

[Explanation of symbols]

 Reference Signs List 1 screen 1a opening 1b body 1c door 2 axis 3 guide rail 5 main weight bar 6 sub weight bar 7 wire 8 coil spring

Claims (9)

[Claims] 1. A screen device for a fire prevention section through which a person can easily pass, which has the following requirements (1) to (4). (1) A heat-resistant screen which is installed so as to hang down so as to shield the opening inside the building, reaches from the ceiling or under the beam to the floor, and has both ends reaching a wall or a pillar. (2) The screen has a main body having an opening for an evacuation passage reaching a lower end formed at a predetermined position, and is disposed so as to close the opening, and an upper portion is integrally joined to the main body. The main body is overlapped with both sides of the door. (3) A main weight bar is horizontally fixed to the lower end of the screen main body. (4) A sub-weight bar is horizontally fixed to the lower end of the screen door, and the sub-weight bar and the main weight bar are arranged substantially linearly. 2. The sub-weight bar according to claim 1, wherein the sub-weight bar is mechanically loosely restrained with respect to the main weight bar by an appropriate connecting means, and receives an external force applied when a person tries to pass through. A fire prevention section through which a person can easily pass by being largely displaced with respect to the main weight bar and returning to a steady position in which the main force bar is almost in contact with and parallel to the main weight bar by the restraining force when the external force is removed. Screen device. 3. A screen device for a fire prevention section through which a person can easily pass, which has the following requirements (1) to (5). (1) A heat-resistant screen which is installed so as to hang down so as to shield the opening inside the building, reaches from the ceiling or under the beam to the floor, and has both ends reaching a wall or a pillar. (2) The screen has a main body having an opening for an evacuation passage reaching a lower end formed at a predetermined position, and is disposed so as to close the opening, and an upper portion is integrally joined to the main body. The main body is overlapped with both sides of the door. (3) At the lower end of the screen, a main weight bar that is continuous over substantially the entire width is horizontally disposed, and the main weight bar is fixed to the lower end of the screen main body. And are separated. (4) A sub-weight bar is horizontally fixed to the lower end of the screen door, and the sub-weight bar is disposed substantially in contact with the main weight bar. (5) The sub-weight bar is mechanically loosely restrained relative to the main weight bar by an appropriate connecting means, and receives an external force applied when a person tries to pass through the sub-weight bar, so that the sub-weight bar can be moved relative to the main weight bar. When the external force is removed and the external force is removed, the restraining force returns to the normal position where the main weight bar is almost in contact with and parallel to the main weight bar. 4. The fire protection compartment according to claim 2, wherein the connecting means connects the main weight bar and the sub weight bar with an elastic elastic material. Screen device. 5. The elastic elastic member according to claim 4,
A screen device for a fire compartment, through which a person can easily pass, wherein a wire and a coil spring are connected. 6. The apparatus according to claim 5, wherein the elastic elastic member connecting the wire and the coil spring penetrates a hollow portion of the sub-weight bar formed of a hollow body. A screen device for a fire compartment that can pass through. 7. The person according to claim 2, wherein said coupling means attracts said main weight bar and said sub weight bar by a magnetic force by a combination of a permanent magnet and a magnetic material. A screen device for a fire compartment that can pass through. 8. The fire protection section according to claim 1, wherein the width of the overlapping portion between the both sides of the screen door and the screen main body is increased toward the lower side. Screen device. 9. The structure according to claim 3, wherein the main weight bar and the sub weight bar are combined.
The sub-weight bar is capable of parallel movement away from the screen surface in one direction, but is prevented from parallel movement away from the screen surface in the opposite direction.