JP3643611B2 - Retractable movable wall made of fireproof sheet - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a movable leaning wall composed of a roll-up fireproof sheet installed indoors in a building such as concrete.
[0002]
[Conventional technology and problems]
When a fire breaks out, poisonous smoke rises to the ceiling and moves to the next room through the ceiling. If it is wrapped in this smoke, it may have a negative effect on the human body and may result in death. If smoke spreads quickly, evacuation may be delayed due to the smoke. Therefore, in recent years, a building has a smoke-proof wall on the ceiling in each smoke-proof section of the building for the purpose of temporarily stopping smoke movement and making it easy to evacuate during that time. Mandatory.
[0003]
As one of the smoke barriers that meet this standard, a dripping wall that protrudes 50 cm or more downward from the ceiling is known and is actively used.
[0004]
One example of this type of wall is a rollable movable wall made of a flexible sheet. In the event of a fire, the movable stagnation wall is formed by projecting the movable stagnation wall stored in the case in the ceiling vertically downward from the ceiling surface in conjunction with the smoke detector to form a smoke proofing wall.
[0005]
However, the conventional movable wall only protrudes about 50 to 80 cm downward from the ceiling surface, and the wall itself has a structure that prevents the spread of fire and fire on the non-fire side like a fire door or fire shutter. It was not. That is, the conventional movable wall is often made of a non-combustible sheet such as a glass fiber sheet or a flammable sheet material, but does not have a fireproof structure that can withstand fire heat. Also, the movable wall is not lowered so as to come close to the floor surface to prevent the heat and smoke on the fire side from moving to the non-fire side. Therefore, in order to conform to the Building Standard Law, a smoke barrier is required for each smoke proof area, and similarly, a fire door and a fire shutter have to be installed separately for each fire proof area.
[0006]
[Problems to be solved by the invention]
Conventionally, as described above, each smokeproof area of a building or each fireproof area is provided with a separate smokeproof wall or fireproof door or fire shutter with the fireproof characteristics required by law. There is a need. In other words, conventional smoke barriers (movable walls) do not have a fireproof structure that can withstand the heat generated during a fire, and they cannot descend until they are close to the floor in the event of a fire. It cannot be prevented from moving to the fire side. Therefore, there was a problem that it was not possible to prevent the fire side and the adjacent space (non-fire side) from spreading. If a fire shutter is also provided, there is a problem that the cost is generally high.
[0007]
The present invention has been made in view of the above-described problems, and the object of the present invention is to move a movable wall downward from the ceiling surface in conjunction with the operation of the smoke detector in the room when a fire occurs in the room. If the ambient temperature of a required part of the room rises, the movable wall is moved in conjunction with the operation of the heat sensor. Provides a retractable movable wall that descends to the vicinity of the floor surface to prevent the heat and smoke on the fire side from moving to the non-fire side, and to ensure a safe fire prevention and smoke prevention area It is.
[0008]
[Means for solving problems]
In order to achieve the above object, the movable wall of the present invention winds up a smoke-proof sheet on a winding shaft disposed on the ceiling of a building so as to be freely rewound, and the left and right edges of the sheet are guide rails. A wind-up movable movable wall inserted into the rail to raise and lower the smoke-proof sheet along the rail,
The smoke-proof sheet is formed of a windable flexible sheet material having heat insulation and fire resistance, and the brake of the switch is released based on the operation signal of the smoke sensor or the heat sensor. An operation circuit for vertically lowering the building by its own weight to semi-close, fully close or stop the seat at a preset stop position, a detector (limit switch) for detecting the seat position, and the detection And a brake of an opening / closing machine that brakes the winding shaft based on the detection signal of the device.
[0009]
The operation circuit is configured to release the brake through a plurality of detectors corresponding to the stop position of the smoke-proof sheet and lower the smoke-proof sheet to a fully closed position or a preset stop position. Yes.
[0010]
In use, the present invention normally uses a push button to roll up the smoke-proof sheet to a predetermined height by a switch, and when a fire occurs, at least the smoke-proof sheet is lowered by a smoke sensor and a heat sensor signal. It is configured to descend in stages.
[0011]
【Example】
Next, the configuration of the present invention will be specifically described based on an embodiment shown in the drawings.
[0012]
In the drawings, a winding shaft 1 is disposed in a storage case 2 disposed on the ceiling of a building and, as will be described later, via a motor of a switch that interlocks with the operation of a smoke detector or the like, The winding shaft 1 is rotated by operating the driving wheel with a chain.
[0013]
The smoke-proof sheet 3 is composed of a flexible sheet that can be wound up and has heat insulation and fire resistance. The upper part of the sheet is wound around the winding shaft 1 and can be freely rewound. A seat plate 4 having a width of almost the full opening width is secured. In addition, the right and left edge portions of the smokeproof sheet are inserted into a groove of the guide rail 5 fixed to the wall surface of the opening of the building so as to move up and down. Note that the guide rail of the smokeproof sheet is provided from the ceiling 7 to the floor 8 unlike the conventional rail for movable movable wall prevention. Reference numeral 6 denotes a locking bracket fixed from both ends of the upper surface of the seat plate of the smoke-proof sheet, and is engaged with the bent portion 5a provided in the longitudinal direction of the guide rail so that the wind pressure generated when the seat descends or due to a fire. This prevents the smokeproof sheet from being beaten and detached from the guide rail. In addition, the said removal prevention metal fittings can be attached to the right and left of a smoke-proof sheet at predetermined intervals other than the position of the illustrated embodiment.
[0014]
Examples of the heat-resistant and fire-resistant smoke-proof sheet that can be suitably used in the present invention include ceramic cloth marketed under the trade name Nextel (sales: Sumitomo 3M), and marketed as trade name Siri Glass (Nippon Inorganic). Silica cloth, metal fiber marketed under the trade name Naslon (Nihon Seisen), metal fiber cloth formed by weaving fine wires, flame resistant fiber cloth marketed as product surface lastan (Asahi Kasei), etc. can be used.
[0015]
A motor 9 with an electromagnetic brake 10 with a built-in thermal protector is attached to the ceiling, and the driving wheel 11 is fixed to the motor shaft and the driven wheel 12 is fixed to the end of the winding shaft 1. A chain 13 is stretched between the driving wheel 11 and the driven wheel 12. Reference numeral 14 denotes a hoisting hook.
[0016]
FIG. 5 is a wiring diagram of a winding type movable wall according to the present invention, in which 20 is a control device, and 21 is a three-point push button switch for normal opening / closing operation, ie, winding, stopping, and unwinding. Further, LS is an upper limit switch, LS1, LS2, and LS3 are limit switches that define the stop position of the seat, and the smoke-proof sheet 3 is a signal from a smoke sensor and a heat sensor, not shown, 50 from the ceiling surface. The electromagnetic brake 10 is activated by detecting this when it is lowered to a height h1 (half-closed position) h1 of -80 cm, or when it is lowered to a height h2 (for evacuation) 30-50 cm (evacuation) from the floor surface To stop the descent of the smoke-proof sheet.
[0017]
FIG. 6 is an explanatory diagram showing various signals and a stop position from the upper limit position to the lower limit position of the hanging wall (seat), and FIG. 7 is a block diagram showing the flow of various signals and the operation circuit of the switch. FIG.
[0018]
[Action]
In the present invention, normally, the smoke-proof sheet is wound up to a predetermined height by an opening / closing device by a push button operation. In the event of a fire, when the control device 20 receives a signal from the smoke detector via the disaster prevention center 22 inside the building, the brake is released and the smoke proof sheet 3 is lowered by its own weight.
[0019]
That is, first the smoke detector signal enters the operating circuit 24 through LS1 and releases the brake. When the seat reaches the half-closed position h1, the limit switch LW1 is turned off, the brake is restored, and the seat stops. Similarly, the signal from the heat sensor enters the operating circuit 24 through LS2 and releases the brake. When the smoke-proof sheet 3 reaches a height h2 of 30 to 50 cm from the floor surface, the limit switch LS2 is cut, the brake is restored, and the sheet is stopped. When the manual lift signal of the manual push button switch 21 passes through the upper limit switch LS and enters the operation circuit 24, the brake is released and at the same time the motor is driven to rotate the winding shaft to wind up the smokeproof sheet.
[0020]
【The invention's effect】
The smoke proof wall according to the present invention has a fireproof structure that can withstand the heat of fire in a fire, and also descends to the floor surface in the event of a fire, so that the heat and smoke on the fire side can move to the non-fire side. Can be prevented. In other words, when a fire occurs in a building, the movable wall protrudes downward from the ceiling surface in conjunction with the operation of the smoke detector in the room, temporarily stopping smoke from moving or spreading to other adjacent areas. If the ambient temperature of the required part of the room rises, the movable wall is moved down to the floor surface in conjunction with the operation of the heat sensor, and the heat and smoke on the fire side move to the non-fire side. It is possible to prevent movement and secure a safe fire prevention and smoke prevention section. Therefore, it is possible to prevent the spread of fire and fire to the fire side and the adjacent space (non-fire side). In addition, the smoke proof wall of the present invention has an effect that the equipment cost is generally reduced as compared with a case where a fire shutter is also provided.
[Brief description of the drawings]
FIG. 1 is a front view of a retractable movable wall according to the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is an enlarged cross-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 retractable movable wall of the present invention.
FIG. 6 is an explanatory diagram showing various signals and stop positions from the upper limit position to the lower limit position of the hanging wall (seat).
FIG. 7 is a block diagram showing a flow of signals between various signals and an operation circuit of the switch.
[Explanation of symbols]
1 Winding shaft 3 Smokeproof sheet 5 Guide rail 10 Brake LS Upper limit switch LS1, LS2, LS3 Stop position regulation limit switch

Claims (2)

A smoke-proof sheet is wound on a winding shaft disposed on the ceiling of the building so that it can be rewound and unwound. A retractable movable wall
The smoke-proof sheet is formed of a windable flexible sheet material having heat insulation and fire resistance, and the brake of the switch is released based on the operation signal of the smoke sensor or the heat sensor. An operation circuit for lowering the opening of the building semi-closed, fully closed by its own weight, or stopping the smoke-proof sheet at a preset stop position; a detector for detecting the position of the smoke- proof sheet; A winding movable movable wall comprising a brake of an opening / closing machine that brakes a winding shaft based on a detection signal of a detector. The operation circuit opens the brakes through a plurality of detectors corresponding to the stop position of the smoke-proof sheet and releases the brake to the fully-closed position of the opening of the building or a preset stop position. The windable movable wall according to claim 1, wherein the rollable movable wall is configured to descend.

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