JPH1189952A - Fire screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a fire screen device and to enhance the fire-resisting performance, heat insulating property, flame resistance, and smoke resistance of the device. SOLUTION: In a fire screen device, which has a fire-screen roll 20 formed by securing the upper end of a fire screen 18 to a building and winding the lower end of the fire screen 18 on a core shaft 19, and which also has a freely- bending winding member 21 wound around the fire-screen roll, with one end of the winding member 21 locked to the upper-end position of the fire screen and the other end subsequently connected to the building, the winding member is separated from the building to allow the fire-screen roll to drop by its own weight while unwinding the fire screen, so that the fire screen forms a fire limit while hanging down. By rotating the winding shaft of the winding member, the fire-screen roll rises or falls while rotating, thus winding or unwinding the fire screen.

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 preventing fire from spreading or spreading smoke when a fire occurs.

[0002]

2. Description of the Related Art A conventional fire protection screen device provided as fire protection and smoke prevention equipment will be described with reference to FIG.

A fire screen winding device 2 is provided on the back side of the ceiling 1 of the building, and a winding shaft 3 of the fire screen winding device 2 is provided to span a frontage to be divided, and both ends are rotatably supported. The winding shaft 3 is rotated by a winding motor 4 to wind a non-combustible fireproof screen 5. The fire protection screen 5 fed from the winding shaft 3 hangs from a slit-shaped opening 6 provided in the building ceiling 1, and a plurality of drainage heads 7 are provided on both sides of the opening 6. The drain head 7 is connected to a pipe 8
Through a water source such as a water storage tank (not shown).

[0004] When a fire occurs, the wind-up motor 4 is driven to drop the fire-screen 5, thereby partitioning a space and spraying water from the drain head 7 toward the fire-screen 5. . The non-combustible fire screen 5 and a water curtain sprayed and formed on the fire screen 5 block the fire from the fire and prevent fire.

[0005]

In the above conventional fire screen device, the weight of the fire screen 5 is supported by the winding shaft 3, and the winding shaft 3 is supported at both ends. In order to partition the shaft, the winding shaft 3 having high strength and rigidity was required, and the winding shaft 3 had to be large in diameter. Therefore, a large storage space was required.

It is also conceivable to provide a plurality of fire-prevention screen devices in series, but in this case, due to the structure of the bearing of the take-up shaft 3, a gap is provided between adjacent fire-prevention screens, so that heat interruption, fire prevention, There is a possibility that the function of smoke prevention may be deteriorated, and a center pillar and a guide rail are required to make the fire prevention screen continuous. For this reason, the structure is complicated, and there is a problem that it is difficult to install a fireproof screen at a position where the middle pillar and the guide rail are not provided due to the structure. Furthermore, although water is sprayed on the fire screen, there is a problem that water is scattered and is not sufficiently absorbed by the fire screen, requiring a large amount of water.

In view of such circumstances, the present invention has a small storage space for a fire-screening device, and even if a plurality of fire-screens are provided in series, the adjacent fire-screens are in close contact with each other, so that the fire-screen can be connected continuously. It eliminates the need for pillars and guide rails, and at the same time, increases the water absorption of the fire screen, simplifies the fire screen device, and improves fire resistance, heat insulation, flame resistance, and smoke resistance. Things.

[0008]

According to the present invention, an upper end of a fire-prevention screen is fixed to a building side, and a lower end side is wound around a core shaft to form a fire-prevention screen winding. After being attached to the upper end position of the fire screen and winding the winding member around the fire screen winding, the present invention relates to a fire screen device having the other end of the winding member connected to the building side, and the winding member winding shaft. Provided on the building side in parallel with the fire screen, the other end of the winding member relates to a fire screen device wound around the winding member winding shaft, and the upper end of the fire screen is fixed to the building side,
Winding the lower end side around the core shaft to form a fire screen winding,
After one end of the winding member is engaged with the upper end position of the fire screen and the winding member is wound around the fire screen, the other end of the winding member is wound around the winding member winding shaft. The present invention relates to a fire-screen device in which a plurality of fire-screen units are arranged alternately and symmetrically so that the edges of the adjacent fire-screens overlap, and the wind-up member wind-up shaft is rotated around the wind-up member wind-up shaft. The present invention relates to a fire-prevention screen device in which a driving switch is connected, and a winding shaft of a fire-prevention screen unit in the same direction is connected through a connection shaft, and the fire-screen unit in the same direction is driven by a pair of switches. And a pair of guide rollers are provided on the building side, and two sets of guide rollers are provided on the building side. One winding member one guide roller of the two sets of winding members out Repetitive, turning hanging the fire screen-winding, and the other winding member and the other guide rollers,
It relates to the fire protection screen device which is attached to the hanging metal fittings after being wound around the fire protection screen, respectively, and the winding shaft and connection shaft of the fire protection screen unit are connected via a universal joint so that the fire protection screen units can be bent. Further, the present invention relates to a fireproof screen device provided with a sprinkler tube for spraying water on the fireproof screen facing the surface of the fireproof screen on the side of the fireproof screen winding side.

By separating the hoisting member from the building side, the fire protection screen winding falls while unwinding the fire protection screen by its own weight, and the fire protection screen forms a fire protection compartment in a hanging state. Further, the rotation of the winding member winding shaft raises and lowers the fire prevention screen winding. The raising and lowering of the fire prevention screen winding involves rotation, and the fire prevention screen is wound or unwound. When a plurality of fire protection screen units are provided in series, the heat insulating, flame and smoke prevention properties of the fire protection screen are enhanced because the edges of the fire protection screen are superposed. Further, by jetting the water to the fire protection screen from the winding side of the fire prevention screen, the water that has flowed down is collected between the winding of the fire prevention screen and the fire prevention screen, and is less likely to flow downward (the floor).

[0010]

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

FIGS. 1 and 2 show a state in which a plurality of fire screen units 9a, 9b,...

The fireproof screen units 9a, 9b,...
Have the same configuration and are arranged alternately symmetrically, so that the fireproof screen unit 9a will be described below.

A pair of bearings 13 and 13 are fixed to the ceiling 10 of the building, and a wire take-up shaft 14 is rotatably supported by the bearings 13 and 13. One end of the wire take-up shaft 14 is not shown. A driven sprocket is fitted. A switchgear 15 is fixed to the building ceiling 10 so as to face one end of the wire take-up shaft 14, and a drive sprocket (not shown) is fitted to an output shaft of the switchgear 15, and the drive sprocket and the driven sprocket And are connected by a chain 16.

The hanging bracket 1 extends parallel to the wire winding shaft 14.
7 a is fixed to the building ceiling 10,
The other end of the fire protection screen 18a is fixed to a, and the other end of the fire protection screen 18a is wound around the core shaft 19 to form a fire protection screen winding 20a. The core shaft 19 is not particularly supported, and can be freely moved up and down.

The wire winding shaft 14 has a winding wire 21a
(In this embodiment, two wires) are wound, and the hoisting wire 21a is wound around the fire screen winding 20a, and then attached to the hanging bracket 17a. Thus, the weight of the fire protection screen winding 20a is supported by the hanging metal fittings 17a and also by the winding wire 21a.

The sprinkler pipe 22 near the hanging bracket 17a and parallel to the fire screen 18a is connected to the fire screen 18a.
The sprinkling pipe 22 is connected to a water source (not shown) on the side of the fire screen winding 20a with respect to a. A water discharge hole (not shown) is formed in the water spray pipe 22 at a required pitch at a position facing the fire screen 18a.

The fire screen unit 9b is symmetrical to the fire screen unit 9a. The hanging bracket 17b is attached so that its end overlaps with the hanging bracket 17a, and the fire screen 18b fixed to the hanging bracket 17b is configured such that the edge portion overlaps with the fire screen 18a. . The other structure is the same as that of the above-described fire screen unit 9a, and thus the description is omitted.

A water sprinkling pipe 22 is provided near the hanging bracket 17b and parallel to the fire screen 18b, and the water sprinkling pipe 22 is connected to a water source (not shown). A water discharge hole (not shown) is formed in the water spray pipe 22 at a required pitch at a position facing the fire screen 18b.

The operation will be described below.

When a general power supply or an emergency power supply is available at the time of a fire, the switch 15 is driven to rotate the wire winding shaft 14 in the direction in which the winding wire 21 is fed. When the winding wire 21 is fed,
The fire screen winding 20 rotates and descends while being unwound, and the fire screen winding 20 or the core shaft 19 is rotated.
Touches the floor.

At the same time, water is spouted from the sprinkler pipe 22,
It is sprayed on the fire screen 18. Water is effectively absorbed by the fire screen 18 and a water curtain is formed on the surface of the fire screen 18 by the water flowing down.
Since the fire screen winding 20 is formed at the lower end of the fire screen 18, surplus water collects between the fire screen 18 and the fire screen 18 and is absorbed without waste.

When the core shaft 19 is in contact with the floor,
The space is partitioned by the fire screen 18, and the adjacent fire screen 18, for example, the fire screen 18a,
Since the edge of 18b is overlapped, there is no gap between the fire screen units 18a and 18b. still,
If the fire protection screen 18a and the fire protection screen 18b are fastened together by the hanging base metal 17a and the hanging base metal 17b, the fire protection screen 18a and the fire protection screen 18 are fastened.
The edges of b are in close contact with each other so that no gap is left.

When a general power supply or an emergency power supply such as a power failure cannot be used, the brake of the switch 15 is released with a wire or the like as in a general disaster prevention shutter, and the fire prevention screen winding 20 is lowered by its own weight, or the motor shaft or The gear interlocking with the wire winding shaft 14 is driven by a chain, a rope, a wire, or the like, and the fire screen winding 20 is lowered.

In normal times, the switch 1 is operated by a general power supply.
5 is driven to wind up the winding wire 21. The winding of the winding wire 21 raises the fire-screen 18 while being wound around the core shaft 19, that is, the fire-screen winding 20 is increased in thickness.

FIGS. 3 to 5 show a case where a plurality of fire protection screen units 9 are provided in a bent state.

The fire screen units 9a and the fire screen units 9b are alternately arranged, and the wire winding shaft 14 of the adjacent fire screen unit 9a and the wire winding shaft 14 of the fire screen unit 9a are connected to the universal joint 24. Via a connecting shaft 25. Similarly, the wire winding shaft 14 of the adjacent fire screen unit 9b and the wire winding shaft 14b of the fire screen unit 9b are connected by a connection shaft 25 via a universal joint 24, respectively. Switchgear 1
5 are provided on the wire winding shaft 14 of one fire screen unit 9a and the wire winding shaft 14 of one fire screen unit 9b, respectively.

By driving the switch 15 and rotating one of the wire winding shafts 14, the two sets of fireproof screen units 9a are opened and closed, and the other wire winding shaft 14 is similarly connected. By rotating, the two fire screen units 9b open and close.

In the above-mentioned fireproof screen units 9a and 9b, both ends of the wire winding shaft 14 are supported by the bearings 13. However, as shown in FIG. 5, the wire winding shaft 14 is connected to the wire winding shaft 14 'and the wire winding shaft 14'. Separate into winding shaft 14 "and separate bearing 13
The wire winding shafts 14 'and 14 "may be connected by a universal joint 24. By dividing the wire winding shafts 14' and 14", the diameter of the wire winding shaft 14 can be further reduced.

FIG. 6 shows another embodiment, in which the fire prevention screen device is mounted on a beam 27. The switch 15 is mounted on a rib 28 of the beam 27, and the hanging bracket 17 is attached to the lower flange of the beam 27. 29. The operation is the same as in the above-described embodiment, and a description thereof will be omitted.

FIG. 7 shows still another embodiment.
Two sets of the fire screen windings 20 are moved up and down by one wire winding shaft 14.

The bracket 31 is fixed to the ceiling 10 of the building,
The wire winding shaft 14 is rotatably supported on the bracket 31, and the switch 15 is attached. Guide rollers 32 are rotatably provided on both lower ends of the bracket 31, and the hanging bracket 17 is fixed to the center of the lower end of the bracket 31.
The two sets of winding wires 21 fed from the wire winding shaft 14 are respectively wound around left and right guide rollers 32,
After being wound around the fire protection screen windings 20a and 20b, it is attached to the hanging bracket 17.

In the present embodiment, one wire winding shaft 14
, Two sets of winding wires 21 can be wound and unwound, so that one set of the opening / closing device 15 can raise and lower the two sets of fire screen windings 20a and 20b, that is, open and close the fire screen units 9a and 9b. it can.

The mechanism can be simplified by focusing on the functions of heat insulation, flame prevention and smoke prevention of the fire screen device. FIG. 8 shows an embodiment in which the switch is omitted. In FIG. 8, the same components as those shown in FIG. 1 are denoted by the same reference numerals.

A wire take-up shaft 14 is rotatably supported on the building ceiling 10 via a bearing 13. A hanging bracket 17 is fixed to the building ceiling 10 in parallel with the wire winding shaft 14, one end of a fire screen 18 is fixed to the hanging bracket 17, and the other end of the fire screen 18 is connected to a core shaft 19. Winded to form a fire screen winding 20. The core shaft 19 is not particularly supported, and can be freely moved up and down.

The wire winding shaft 14 has a winding wire 21
(In this embodiment, two wires) are wound, and the winding wire 21 is wound around the fire screen winding 20,
It is engaged with the hanging bracket 17. Thus, the weight of the fire protection screen winding 20 is supported by the hanging metal fittings 17 and supported by the winding wire 21.

A winding balance coil spring (not shown) similar to a winding type shutter for a building is provided for the wire winding shaft 14, and the wire winding shaft 14 is moved by the winding balance coil spring. The winding balance coil spring is urged in the winding direction of the winding wire 21 and the winding balance coil spring maintains at least the raised state of the fire screen winding 20 or the state where the fire screen winding 20 (or the core shaft 19) reaches the floor surface. It is supposed to.

When a wire 29 such as a cord or a steel wire is laid between the shaft ends of the core shaft 19, and the fire protection screen winding 20 is lowered to form a fire protection section, a hook rod or the like is used to form a wire. 2
9 and pull the fire screen winding 20 down. Further, the ring 30 is hung down via the linear material 29,
May be pulled down. To open the fire screen device, the winding wire 21 is wound by the winding balance coil spring by applying an upward force to the fire screen winding 20 or the core shaft 19, and the fire screen winding 20 is wound. Ascends while rotating in the take direction

A pulley or sprocket is provided at the shaft end of the wire take-up shaft 14, a rope or chain is wound around the pulley or sprocket, and the hanging rope, wire, chain, or the like is manually pulled manually. May be rotated. Alternatively, a winding handle may be provided within a reachable area, and the rope, wire, chain, or the like may be circulated through a pulley or sprocket provided on the handle to rotate the winding shaft 14.

Further, a latch mechanism may be provided between the pulley or sprocket and the wire winding shaft 14, and the winding balance coil spring may be omitted, or the latch mechanism and the winding balance coil spring may be used in combination. The latch mechanism restricts the rotation of the wire take-up shaft 14 in the rewinding direction of the hoisting wire 21. The closing operation of the fire prevention screen device releases the latch mechanism, and the self-weight of the fire prevention screen winding 20 causes the fire prevention screen device. Can be closed, and the opening operation of the fire prevention screen device can be achieved by rotating the pulley or sprocket and winding up the hoisting wire 21.

FIG. 9 shows an embodiment in which the wire winding shaft 14 is omitted. The other end of the hoisting wire 21 may be directly engaged with the ceiling side of the building, and in an emergency, the hoisting wire 21 may be cut or the engagement may be released.

In the vicinity of the hanging bracket 17, a sprinkling pipe 22 parallel to the fire screen 18 is disposed on the fire screen winding 20 side with respect to the fire screen 18. The sprinkler pipe 22 is connected to a water source (not shown), and a spout hole (not shown) is formed in the sprinkler pipe 22 at a position facing the fire screen 18 at a required pitch. In an emergency, water is spouted from the water spray pipe 22 toward the fire protection screen 18.

In the above-described embodiment, two winding wires are shown, but even one winding wire can be operated.
When the width of the fire protection screen winding 20 is large, or in consideration of stable operation, a plurality of windings are preferable. The wire for raising and lowering the fire screen winding 20 is not necessarily a wire, but may be a rope, a belt or a sheet having substantially the same width as the fire screen. What is necessary is just a member which can be flexed uniformly.

FIG. 10 shows an example of the fire screen 18.

The polymer water-absorbing material 34 is layered between the two front and back non-combustible sheets 33 and 33 and further quilted. According to the fire protection screen 18, the polymer water absorbing material 34 absorbs water, so that the fire protection screen 1
The airtightness and heat insulation of the fire screen 18 alone are improved while the adhesion between the fireproof screens 8 is improved. The fireproof screen has a multi-layered structure of a non-flammable flame-retardant sheet made of a polymer absorbent and silica cloth, glass cloth, etc., so that more fire, smoke and heat shielding effects can be obtained. Therefore, a multi-layer structure of a sheet made of a material such as a mere fiber or resin woven fabric having no incombustibility and a polymer absorbent may be used.

[0045]

As described above, according to the present invention, the weight of the fire screen is supported by both the hanging bracket and the wire winding shaft via the winding wire, so that the wire winding shaft bears the weight. The load is greatly reduced, and the diameter can be reduced.
In addition, even if the fire screen units are connected in series, there is no gap between the fire screens, the center pillar and guide rails are not required, and the structure is simple, and it can be installed in places where the center pillar and guide rails cannot be provided. There is no restriction, and it can be bent further, so that the degree of freedom of the installation place is greatly increased. In addition, the fireproof screen has a multilayer structure including a polymer water-absorbing material, thereby improving airtightness and heat insulation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view showing the first embodiment.

FIG. 3 is a perspective view showing an application example of the embodiment of the present invention, and showing a case where a plurality of fire-retardant screen units are bent and connected.

FIG. 4 is an explanatory view of a main part showing connection of a fire protection screen unit in the application example.

FIG. 5 is an explanatory diagram in a case where a wire winding shaft is divided in the application example of the first embodiment.

FIG. 6 is a side view showing another embodiment of the present invention.

FIG. 7 is a side view showing still another embodiment of the present invention.

FIG. 8 is a perspective view showing an embodiment of the present invention in which a switch is omitted.

FIG. 9 is a side view showing still another embodiment of the present invention in which a switch is omitted.

FIG. 10 is a partial cross-sectional view showing a structure of a fire screen used in the embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 Reference Signs List 9 fire prevention screen unit 14 wire winding shaft 15 switchgear 17 hanging bracket 18 fire prevention screen 19 core shaft 20 fire prevention screen winding 21 winding wire 24 universal joint 25 connecting shaft

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Noriaki Iwase 3-26-4 Shimura, Itabashi-ku, Tokyo Cultural Shutter Inc. (72) Inventor Yasunobu Oshima 3-26-4 Shimura, Itabashi-ku, Tokyo Culture Inside Shutter Corporation (72) Inventor Naoto Kumagai 3-26-4 Shimura, Itabashi-ku, Tokyo Bunka Shutter Corporation

Claims (8)

[Claims] An upper end of a fire prevention screen is fixed to a building side, and a lower end side is wound around a core shaft to form a fire prevention screen winding, and one end of a bendable winding member is engaged with an upper end position of the fire prevention screen. And the other end of the hoisting member is connected to the building side after winding the hoisting member around the fireproof screen winding. 2. The fire screen device according to claim 1, wherein a winding member winding shaft is provided on the building side in parallel with the fire prevention screen, and the other end of the winding member is wound around the winding member winding shaft. 3. An upper end of the fire prevention screen is fixed to the building side, and a lower end side is wound around a core shaft to form a fire prevention screen winding, and one end of a winding member is engaged with an upper end position of the fire prevention screen and the winding is performed. After the member is wound around the fire prevention screen, a plurality of fire screen units constituted by winding the other end of the winding member around the winding shaft of the winding member are alternately symmetrical and adjacent to each other. A fire-retardant screen device, characterized in that the edges of the screen are arranged to overlap. 4. The fire screen device according to claim 3, wherein a switch for rotating and driving the winding member winding shaft is connected to the winding member winding shaft. 5. The fire screen device according to claim 4, wherein the winding shafts of the fire screen units in the same direction are connected via a connecting shaft, and the fire screen units in the same direction are driven by a set of switches. . 6. A set of winding member winding shafts is provided on the building side, and two sets of guide rollers are provided, and one of the two sets of winding members fed from the winding member winding shaft is used as one guide member. Roller, wrapped around the fire screen,
4. The fire protection screen apparatus according to claim 3, wherein the other winding member is wound around the other guide roller and the fire protection screen winding, respectively, and then engaged with the hanging base. 7. The winding shaft and the connecting shaft of the fireproof screen unit are connected via a universal joint,
6. The fireproof screen unit can be bent.
Fire screen equipment. 8. The fire-screen device according to claim 1, wherein a water-spray tube for fountain with respect to the fire-screen is provided so as to face a surface of the fire-screen where the fire-screen is wound.