JPH07328138A - Winding type mobile hanging wall made of fireproof sheet - Google Patents

Abstract

PURPOSE:To achieve a lowering of equipment costs by a method wherein a smokeproof sheet is wound on a winding shaft arranged on a ceiling part of a building free to wind or unwind, a brake of an opening/closing device is released by working signals of a smoke sensor and a heat sensor so that the smokeproof sheet is lowered vertically by the dead load thereof to close an opening of the building. CONSTITUTION:A winding shaft 2 is arranged into a housing case 2 disposed on the rear of a ceiling of a building and is rotated through a transmission mechanism containing a chain 13 with the action of a motor 9 with an electromagnetic brake of an opening/closing device interlocking the operation of a smoke sensor or the like. The upper part of a smokeproof sheet 3 comprising an adiabatic and fireproof flexible sheet is mounted on the winding shaft 1 free to wind or unwind, a seat plate 4 which plays a role of a weight is fastened on a lower part of the sheet. Right and left end rim parts of the smokeproof sheet 3 are inserted into grooves of a guide rail 5 arranged on the wall surface of the opening of the building and guided downward or upward. In case of a fire, the electromagnetic brake is released and the smokeproof sheet 3 lowers by the dead load to close the opening of the building.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable shelter wall composed of a roll-up fireproof sheet to be installed indoors in a building such as concrete.

[0002]

[Prior Art and Problems] When a fire occurs, highly poisonous smoke rises to the ceiling and travels through the ceiling to the next room or the like. If it is wrapped in this smoke, it may harm the human body and cause death.
If smoke spreads quickly, the smoke may delay evacuation. Therefore, in recent years, in accordance with the Building Standards Law, it is necessary to provide a smoke barrier on the ceiling for each smoke-proof section of the building for the purpose of temporarily stopping the movement of smoke and facilitating evacuation during that period. Mandatory.

As one of the smoke barriers that meet this standard,
It is well known that there is a hanging wall that protrudes 50 cm or more downward from the ceiling, and is widely used.

[0004] As one of this kind of sagging wall, there is a winding type movable sagging wall made of a flexible sheet.
In the event of a fire, the movable barrier wall is linked with a smoke detector to form a smoke barrier wall by vertically projecting the movable barrier wall housed in a case inside the ceiling downward from the ceiling surface.

However, the conventional movable flapping wall only projects downward from the ceiling surface by at most about 50 to 80 cm, and the flapping wall itself prevents the spread or burning of fire on the non-fire side like a fire door or a fire shutter. It wasn't structured. That is, the movable wall in the related art is often made of a non-combustible sheet such as a glass fiber sheet or a combustible sheet material which has been subjected to a flame-retardant treatment, but does not have a fire resistant structure capable of withstanding heat. In addition, there is no mechanism to prevent the heat and smoke on the fire side from moving to the non-fire side by the movable sloping wall descending close to the floor surface. Therefore,
In order to comply with the Building Standards Law, a smoke barrier must be installed in each smoke compartment, and similarly, a fire door and fire shutter must be installed separately for each fire compartment.

[0006]

SUMMARY OF THE INVENTION As described above, conventionally,
It is necessary to separately provide a smoke-proof wall having a smoke-proof property required by law, a fire-proof door having a fire-proof property, or a fire-proof door or a shutter for each smoke-proof region of a building or each fire-proof region. That is, the conventional smoke barrier (movable barrier) is
That it does not have a fire resistant structure that can withstand the heat of a fire,
In the event of a fire, the heat and smoke on the fire side cannot be prevented from moving to the non-fire side because they cannot descend until they are close to the floor surface. Therefore, there is a problem that it is not possible to prevent the fire and the adjacent space (non-fire side) from spreading and burning.
If a fireproof shutter is also provided, there is a problem that the cost is high as a whole.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to make a movable wall a ceiling in conjunction with the operation of a smoke detector in a room when a fire occurs in the room. It projects downwards from the surface to temporarily stop smoke from moving or diffusing to other adjacent areas, and when the ambient temperature of the required part of the room rises, it moves in conjunction with the operation of the heat sensor. Lower the hanging wall close to the floor to prevent heat and smoke on the fire side from moving to the non-fire side,
It is intended to provide a retractable movable shelter wall capable of ensuring a safe fireproof and smokeproof compartment.

[0008]

In order to achieve the above-mentioned object, in the movable shed wall of the present invention, a smoke-proof sheet is wound around a winding shaft arranged at the ceiling of a building so that the smoke-proof sheet can be unwound and rewound. ,
A wind-up type movable sill wall in which the left and right edges of the seat are inserted into a guide rail and the smoke proof sheet is moved up and down along the rail, and the smoke proof sheet has a heat insulating and fire resistant wrapping. It is made of removable flexible sheet material, the brake of the switch is released based on the operation signal of the smoke detector or the heat detector, and the smoke-proof sheet is vertically lowered by its own weight to half-open the building opening. An operation circuit that stops the sheet at the closed position, the fully closed position, or a preset stop position, a detector (limit switch) that detects the position of the sheet, and the winding shaft is braked based on the detection signal of the detector. It is characterized by being equipped with a brake for an opening / closing machine.

The operating circuit opens the brake through a plurality of detectors provided corresponding to the stop position of the smoke proof sheet to lower the smoke proof sheet to a fully closed position or a preset stop position. It is configured.

In use, according to the present invention, the smoke preventive sheet is normally wound up by a switch to a predetermined height by a push button operation, and when a fire occurs, at least the smoke preventive sheet is lowered by a smoke detector and a heat detector signal. The operation is configured to descend in two stages.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the structure of the present invention will be specifically described based on an embodiment shown in the drawings.

In the drawings, a winding shaft 1 is disposed in a storage case 2 disposed behind the ceiling of a building, and is driven by a motor of an opening / closing machine which is interlocked with the operation of a smoke detector or the like as described later. The winding shaft 1 is adapted to rotate by operating the wheels and the driven wheels with a chain.

The smoke-proof sheet 3 is composed of a heat-insulating and fire-resistant flexible sheet that can be wound up, and the upper portion of the sheet is attached to the winding shaft 1 so that it can be rolled up and unwound.
A seat plate 4 having a width substantially equal to the opening, which functions as a weight, is fixed to the lower portion of the seat. Further, the left and right edge portions of the smoke proof sheet are adapted to be inserted into the grooves of the guide rails 5 fixed to the wall surface of the opening of the building and moved up and down.
The guide rail of the smokeproof sheet is provided from the ceiling 7 to the floor 8 unlike the conventional rails for movable barrier walls. Reference numeral 6 denotes locking metal fittings fixed to both ends of the upper surface of the seat plate of the smoke proof sheet, which are engaged with the bent portions 5a provided in the vertical direction of the guide rail and are engaged with each other, and the wind pressure generated when the sheet descends or a fire occurs. Prevents the smoke proof sheet from being lifted and detached from the guide rail. The detachment prevention metal fittings can be attached to the left and right sides of the smokeproof sheet at predetermined intervals other than the positions in the illustrated embodiment.

Examples of the smoke-proof sheet having heat insulation and fire resistance which can be suitably used in the present invention include, for example, a ceramic cloth marketed under the trade name Nextel (sold by Sumitomo 3M) and a trade name under the trade name Siriglass (Nippon Inorganic). Silica cloth, trade name Naslon (Nippon Seisen)
As the metal fiber cloth, a metal fiber cloth formed by weaving fine wires, or a flame-resistant fiber cloth commercially available as the product surface rustan (Asahi Kasei) can be used.

A motor 9 with an electromagnetic brake 10 having a built-in thermal protector is attached to the ceiling portion,
The drive wheel 11 is fixed to the shaft of the motor, and the driven wheel 12 is fixed to the end of the winding shaft 1. This drive wheel 11
A chain 13 is stretched between the driven wheel 12 and the driven wheel 12.
Reference numeral 14 is a winding hook.

FIG. 5 is a wiring diagram of the retractable movable shed wall of the present invention. In the figure, 20 is a control device, and 21 is a three-point push button switch for normal opening / closing operations of hoisting, stopping and unwinding. . LS is the upper limit switch, LS1,
LS2 and LS3 are limit switches that define the stop position of the seat, and the smoke-proof sheet 3 receives signals from a smoke sensor and a heat sensor (not shown) from the ceiling surface 50
Height of 80 cm (semi-closed position) h1, or 30 from the floor
When it descends to a height h2 (for evacuation) of ˜50 cm and when it reaches the fully closed position, this is detected and the electromagnetic brake 10 is detected.
To stop the smoke-proof sheet from descending.

FIG. 6 is an explanatory view showing various signals and stop positions from the upper limit position to the lower limit position of the hanging wall (sheet), FIG.
What is indicated by is a block diagram showing the flow of various signals and signals of the operating circuit of the switch.

[0018]

In the present invention, normally, the smoke proof sheet is rolled up to a predetermined height by the opening / closing device by the push button operation. When the control device 20 receives a signal from the smoke detector via the disaster prevention center 22 inside the building during a fire, the brake is released and the smoke prevention sheet 3 descends by its own weight.

That is, first the smoke detector signal enters the operating circuit 24 through LS1 and releases the brake. When the seat reaches the semi-closed position h1, the limit switch LW1 is turned off, the brake is restored, and the seat is stopped. Similarly,
The signal from the heat sensor enters the operating circuit 24 through LS2 and releases the brake. The smokeproof sheet 3 is 30 from the floor
When the height h2 of ~ 50 cm is reached, the limit switch L
S2 is cut off, the brake is restored, and the seat stops. When the manual push-up signal of the manual push button switch 21 enters the operation circuit 24 through the upper limit switch LS, the brake is released and at the same time the motor is driven to rotate the winding shaft and wind up the smoke proof sheet.

[0020]

EFFECTS OF THE INVENTION The smoke-proof sag wall according to the present invention has a fire-resistant structure that can withstand the heat of a fire, and descends close to the floor during a fire. Can be prevented from moving to. That is, in the event of a fire in a building, the movable wall interlocks with the operation of the smoke detector in the room and protrudes downward from the ceiling surface, temporarily stopping the movement or diffusion of smoke to other adjacent areas. In addition, when the ambient temperature of the required part of the room rises, the movable wall is lowered until it comes close to the floor in conjunction with the operation of the heat sensor, and the heat and smoke on the fire side are transferred to the non-fire side. It is possible to prevent movement and to secure a safe fireproof and smokeproof compartment. Therefore, it is possible to prevent the fire and the adjacent space (non-fire side) from spreading and burning. In addition, the smoke-proof sag wall of the present invention has an effect that the equipment cost is generally low as compared with the case where a fire-proof shutter is also provided.

[Brief description of drawings]

FIG. 1 is a front view of a winding type movable sag wall of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged sectional view of a guide rail portion.

FIG. 4 is an explanatory diagram of a switch part.

FIG. 5 is a wiring diagram of the winding type movable sag wall of the present invention.

FIG. 6 is an explanatory diagram showing various signals and stop positions from an upper limit position to a lower limit position of a hanging wall (sheet).

FIG. 7 is a block diagram showing the flow of various signals and signals between the operating circuit of the switchgear.

[Explanation of symbols]

1 Winding shaft 3 Smoke-proof sheet 5 Guide rail 10 Brake LS Upper limit switch LS1, LS2, LS3 Stop position regulation limit switch

Claims (2)

[Claims] 1. A smoke-proof sheet is wound around a winding shaft arranged on a ceiling of a building so that the smoke-proof sheet can be freely rewound, and the left and right edges of the sheet are inserted into a guide rail so that the smoke-proof sheet extends along the rail. A wind-up movable wall for lifting and lowering a sheet, wherein the smoke-proof sheet is formed of a heat-insulating, fire-resistant and rollable flexible sheet material, Based on the operation signal, open the brake of the switch, vertically lower the smoke-proof sheet by its own weight and half-close the building opening, or fully close or stop the seat at a preset stop position. A retractable movable shed wall including a detector (limit switch) for detecting the position of the sheet, and a brake of an opening / closing device for braking the winding shaft based on a detection signal of the detector. . 2. The operation circuit lowers the smoke prevention sheet to a fully closed position or a preset stop position by opening a brake through a plurality of detectors provided corresponding to the stop position of the smoke prevention sheet. A roll-up type movable hanging wall that is configured to do.