JPH10305110A - Fireproof screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shield a shielded part by extending an incombustible fireproof sheet body from a wall part on one side of the subject part to a wall part on the other side at the time of fire while preventing unexpected accident such as fall of an incombustible fire proof sheet body onto a head or the like at the time of refuge. SOLUTION: A device is provided with an incombustible fireproof sheet body 12 on a wall part 2 on one side of a subject part 1 to shield the subject part 1 when extended, a heat-sensitive means 23 to hold an extension end part 13 of the incombustible fire proof sheet body 12 on the wall part 2 on one side when not on fire, and release holding of the extension end part 13 of the incombustible fireproof sheet body 12 by heat of fire and a sheet body extending means A to extend the incombustible fireproof sheet body 12 to a wall part 3 on the other side when holding of the extension end part 13 of the incombustible fireproof sheet body 12 is released by the heat-sensitive means 23. The heat-sensitive means 23 comprises heat-fusing material 24. The sheet body extending means A is formed of an energization means 19. The energization means 19 is formed of a flat spiral spring 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refractory screen device, and more particularly to a device for preventing the spread of smoke and the spread of fire in a fire.

[0002]

2. Description of the Related Art Heretofore, as a refractory screen device of this type, a sheet descent type refractory screen device for lowering a refractory sheet to shield a shielded portion has been known. This sheet lowering type fire-resistant screen device usually accommodates a screen box having a built-in winding mechanism for winding and rewinding the fire-resistant sheet on the ceiling of the shielded portion, and facing the side walls of the shielded portion. A configuration is provided in which vertical guide rails are provided to guide both end portions of the refractory sheet that is unwound from the screen box by the winding mechanism and descends.

[0003]

The above-described conventional sheet-falling type fire-resistant screen apparatus requires a relatively large storage space for accommodating the screen box on the ceiling of the shielded part, and the fire-resistant screen is provided on both side walls of the shielded part. Guide rails are required to guide both side edges of the seat, and the overall structure is likely to be complicated, and when fire is evacuated, the fireproof sheet suddenly drops overhead etc. There is a problem that there is a possibility.

The present invention has been made in view of such a point, and in the event of a fire, a fire-retardant fire-resistant sheet is pulled out from one side wall of the shielded portion to the other side wall so that the portion to be shielded is fired. Provided is a fire-resistant screen device that enables quick shielding and has a simple structure as a whole, and can prevent an unforeseen situation in which a fire-resistant fire-resistant sheet body suddenly drops overhead or the like at the time of evacuation in the event of a fire. It is intended to do so.

[0005]

According to a first aspect of the present invention, there is provided a fire-resistant screen device which is provided so as to be able to be pulled out to one of two opposite side walls of a shielded portion and which shields the shielded portion at the time of pulling out. A fire-resistant fire-resistant sheet body and a draw-out end of the flame-retardant fire-resistant sheet body held by the one side wall at the time of non-fire, and the fire heat generated by the fire heat in a fire. Heat-sensitive means for releasing the holding of the flame-retardant refractory sheet body, and when the holding of the drawn-out end of the flame-retardant fire-resistant sheet body is released by the heat-sensitive means, the flame-retardant fire-resistant sheet body advances toward the wall on the other side. And a sheet body advancing means.

In a non-fire situation, the drawn-out end of the fire-retardant fire-resistant sheet is held by a heat-sensitive means while the fire-retardant fire-resistant sheet is housed in one wall of the shielded portion. Therefore, the shielded portion is opened as a passage.

In the event of a fire, the holding of the draw-out end of the flame-retardant refractory sheet is released by the heat-sensing means which has sensed the heat of the fire, and the sheet advance means is operated. The drawn-out end of the flame-retardant fire-resistant sheet is advanced toward the other wall of the shielded part, and the drawn-out end of the fire-resistant fire-resistant sheet is abutted on the other wall of the shielded part. Then, the portion to be shielded is shielded by the flame-retardant refractory sheet and is completely closed.

[0008] At this time, the shielded portion is shielded by a horizontally drawn flame-retardant refractory sheet that is drawn out from one wall portion of the shielded portion toward the other wall portion. This prevents an unexpected situation in which the fire-retardant refractory sheet body suddenly drops overhead or the like during evacuation in the event of a fire.

According to a second aspect of the present invention, the heat-sensitive means is made of a hot-melt material.

[0010] In the event of a fire, the hot-melt material is blown off by the fire heat, and the urging means is operated. With this urging means, the drawn-out end of the flame-retardant refractory sheet body is on the other side of the shielded part. And the drawn-out end of the flame-retardant fire-resistant sheet is brought into contact with the wall on the other side of the shielded part, and the part to be shielded is shielded by the flame-retardant fire-resistant sheet. Is completely closed.

According to a third aspect of the present invention, there is provided the fireproof screen apparatus according to the first aspect, wherein the sheet body advance means is provided on the other wall, and one end of the sheet body is drawn out of the flame-retardant fireproof sheet body. And a urging means for urging the flame-retardant refractory sheet body toward the wall on the other side at all times.

In the event of a fire, the holding of the drawn-out end of the flame-retardant refractory sheet is released by the heat-sensitive means which has sensed the heat of the fire, and the urging means is activated, and the urging force of the urging means is reduced. As a result, the drawn-out end of the flame-retardant fire-resistant sheet body is drawn out toward the other wall of the shielded part, and the drawn-out end of the fire-resistant fire-resistant sheet body contacts the other wall of the shielded part. And the part to be shielded is shielded by the flame-retardant refractory sheet and is completely closed.

According to a fourth aspect of the present invention, there is provided a fire-resistant screen device according to the third aspect, wherein the urging means is provided on the other wall portion, and has one end provided at a leading end of the flame-retardant fire-resistant sheet. It is formed by a fixed mainspring spring.

In the event of a fire, the holding of the drawn-out end of the flame-retardant refractory sheet is released by the heat-sensitive means which has sensed the heat of the fire, and the spring is actuated. The drawn-out end of the fire-resistant fire-resistant sheet is pulled out toward the other wall of the shielded portion, and the drawn-out end of the fire-resistant fire-resistant sheet is brought into contact with the wall on the other side of the shielded portion. The part to be shielded is shielded by the flame-retardant refractory sheet and is completely closed.

According to a fifth aspect of the present invention, there is provided a refractory screen device according to the first aspect, wherein the urging means includes a guide roller provided on the other side wall portion and a guide roller provided along the other side wall portion. A weight body that is moved up and down, a drawer body that is engaged with the guide roller, one end of which is fixed to the drawer end of the flame-retardant refractory sheet body and the weight body is suspended at the other end;
It has.

In the event of a fire, the holding of the draw-out end of the flame-retardant refractory sheet is released by the heat-sensing means which has sensed the heat of the fire, and the weight is pulled out by the weight of the pull-out body via the guide roller. Descend while towing. And then
The drawn-out end of the flame-retardant refractory sheet is pulled out toward the other wall of the shielded portion by the drawer pulled by the lowering of the weight, and the drawn-out end of the flame-retardant fire-resistant sheet is drawn out. The portion is in contact with the wall on the other side of the portion to be shielded, and the portion to be shielded is shielded and completely closed by the flame-retardant fire-resistant sheet.

According to a sixth aspect of the present invention, there is provided the fire-resistant screen device according to any one of the first, third, fourth and fifth aspects. A magnetic body is provided on one of the abutting portions of the wall on the other side, and a magnet body for attracting the magnetic body is provided on the other side.

Then, the drawn-out end of the flame-retardant refractory sheet is brought into contact with the wall on the other side of the shielded portion. It is attracted by the magnet body on the wall on the other side of the part, and the part to be shielded is shielded and completely closed by the flame-retardant fire-resistant sheet.
In this way, the magnet and the magnetic body keep the airtight between the drawn-out end of the flame-retardant refractory sheet and the wall on the other side of the shielded portion.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

1 is a shielded portion such as an entrance, an emergency exit, a passage, etc. 2 is a wall on one side of the shielded portion 1, and 3 is a wall on the other side of the shielded portion 1 facing the wall 2 on the one side. A wall 4 is a ceiling of the shielded portion 1, and 5 is a bottom portion facing the ceiling 4 of the shielded portion 1.

The one side wall 2 has a vertical recess 6 formed along the wall 2, and a guide opening 7 opened in the wall 2 is formed in the recess 6. The holding frame 8 is fixed. A cylindrical seat case 9 is fixed in the housing frame 8, and a winding shaft 10 in a vertical direction is rotatably provided at the center of the seat case 9. The take-up shaft 10 is rotatably supported on the bottom 4 by a bearing (not shown). The seat case 9 has a vertical outlet 11 at a position facing the guide opening 7 of the housing frame 8.

In the seat case 9, one end (inner end) of a flame-retardant refractory sheet 12 for shielding the shielded portion 1 is fixedly wound around the take-up shaft 10;
The other end of the flame-retardant refractory sheet body 12 is drawn out from the guide port 7 as a draw-out end 13, and the draw-out end 13 extends vertically over the entire length of the draw-out end 13. It has a flexible edge piece 14. The flame-retardant refractory sheet body 12 is formed in a sheet shape from a single-piece flame-retardant cloth made of glass cloth, silica cloth or the like.

Next, on the other wall 3, a column 15 is fixed upright at a position facing the housing frame 8, and is fixed to the upper end of the column 15 by a heat-sensitive means described later. Sheet advancing means A for advancing the flame-retardant refractory sheet body 12 toward the wall 3 on the other side when the holding of the draw-out end 13 of the flame-retardant fire-resistant sheet body 12 is released. Have been.

The sheet advancing means A is provided on the wall 3 on the other side, and has one end fixed to the drawn-out end 13 of the flame-retardant fire-resistant sheet 12 and keeps the fire-resistant fire-resistant sheet 12 constant. It is formed by urging means 19 which urges the wall portion 3 on the other side.

The urging means 19 includes a pulley 17 fixed on a mounting shaft 16 integrally projecting from the upper end of the support column 15.
And a mainspring 20 having an inner end secured to and wound around the winding recess 18 of the pulley 17, and an outer end of the mainspring 20 pulled out (rewind end That is, one end 21 is integrally fixed to the upper end of the flexible edge piece 14. The mainspring 20 is spirally wound with a width capable of being wound and unwound in the winding recess 18, and is constantly biased in the winding direction.

A guide 22 is provided near the pulley 17 and guides the mainspring 20 in and out of the wall 3 on the other wall 3.

Next, the spring 20 is rewound, and the flexible edge 14 of the drawn end 13 of the flame-retardant refractory sheet 12 is rewound.
The flexible rim 14 is held on the one side wall 2 in a non-fire situation in a state in which the flexible edge piece 14 is located in the guide opening 7 of the housing frame 8 and in a fire situation, A heat sensing means 23 for releasing the holding of the sex piece 14 is provided.

The heat-sensitive means 23 has a hot-melt material 24 fixed to the housing frame 8 while holding the flexible rim 14 in a non-fire situation. , Made of a low-melting-point metal such as lead, etc.
Is fixed to the housing frame 8 in a state of blocking, and in the event of a fire, it is blown off by fire heat that has risen to a predetermined temperature.

Next, the flame-retardant refractory sheet 12 is located between the guide opening 7 of the one wall portion 2 and the pulley 17 and is pulled out from the lower surface of the ceiling 4 when the flame-retardant sheet 12 is pulled out. A guide groove 25 having an open lower surface for guiding the upper end of the refractory sheet body 12 is formed. The guide groove 25 is formed in a substantially U-shaped cross section with an open lower surface.

Further, the lower end of the flame-retardant fire-resistant sheet 12 is pulled out in a state of being close to the bottom 5 when the flame-retardant fire-resistant sheet 12 is pulled out. At the lower end of the drawn-out end 13 of the fire-retardant fire-resistant sheet body 12, there is formed an exit indicator 26 such as a push which opens as an emergency exit of the fire-retardant fire-resistant sheet body 12.

When the flame-retardant refractory sheet 12 is pulled out of the flame-retardant refractory sheet 12, the shielded portion 1 is shielded and fully closed by the flame-retardant refractory sheet 12. Has become.

Next, the operation of the above embodiment will be described.

In a non-fire situation, the flame-retardant fire-resistant sheet 12 is accommodated in the seat case 9 in the housing frame 8 of the wall 2 on one side of the shielded portion 1. The withdrawal end 13 of the body 12 and a flexible lip integral with the withdrawal end 13
14 is held by the heat-sensitive means 23, so that the shielded portion 1 is opened as a passage.

In the event of a fire, the holding of the draw-out end 13 and the flexible edge piece 14 of the flame-retardant refractory sheet 12 is released by the heat-sensing means 23 that has sensed the heat of the fire, and the sheet advances. By means A, the flame-retardant refractory sheet 12 is advanced toward the wall 3 on the other side of the shielded portion 1.

That is, the holding of the drawn-out end 13 and the flexible edge piece 14 of the flame-retardant refractory sheet 12 by the heat-sensitive means 23 is released, and the urging means 19 is operated. End portion 13 of flexible and fire-retardant sheet 12
Is drawn out toward the wall 3 on the other side of the shielded portion 1, and the drawn-out end 13 and the flexible edge piece of the flame-retardant refractory sheet 12 are drawn out.
14 abut against the wall 3 on the other side of the shielded portion 1.

Therefore, the shielded portion 1 is quickly shielded by the flame-retardant refractory sheet 12 and is completely closed in an airtight manner. Then, an exit display 26 appears at the lower end of the flame-retardant refractory sheet 12 located on the other wall 3 side of the shielded portion 1.

At this time, the shielded portion 1 is shielded by a horizontally drawn flame-retardant refractory sheet 12 which is drawn out from the wall portion 2 on one side of the shielded portion 1 toward the wall portion 3 on the other side. By doing so, it is possible to prevent an unexpected situation in which the fire-retardant refractory sheet 12 suddenly drops overhead or the like at the time of evacuation in the event of a fire.

Further, since the heat sensing means 23 is made of the heat melting material 24, in the event of a fire, the heat melting material 24 is blown off by the fire heat raised to a predetermined temperature, and the urging means 19 is operated. At 19, the draw-out end 13 of the flame-retardant refractory sheet body 12
And the flexible edge piece 14 is quickly pulled out toward the wall part 3 on the other side of the shielded part 1. Therefore, the drawn-out end 13 and the flexible edge piece 14 of the flame-retardant refractory sheet body 12 are
Is securely contacted with the wall 3 on the other side, and the shielded portion is securely completely closed by the flame-retardant refractory sheet.

The biasing means 19 is provided on the wall 3 on the other side, and has one end 21 connected to the drawing end 13 of the flame-retardant refractory sheet 12.
And a spring 20 fixed to the flexible edge piece 14, so that in the event of a fire, the heat melting material 24
Is melted, the holding of the drawn-out end portion 13 and the flexible edge piece 14 of the flame-retardant refractory sheet body 12 is released, and the mainspring 20 is actuated. The draw-out end 13 and the flexible edge piece 14 of the fire-resistant refractory sheet 12 are drawn out toward the wall 3 on the other side of the shielded portion 1.

Therefore, the draw-out end 13 and the flexible rim 14 of the flame-retardant refractory sheet 12 are airtightly brought into contact with the wall 3 on the other side of the shielded portion 1 by the winding action of the mainspring 20. The flame-retardant refractory sheet 12 is in contact with
Is securely closed in an airtight manner and is fully closed.

When the flame-retardant refractory sheet 12 is pulled out, the flame-retardant refractory sheet 12 is smoothly and sequentially pulled out from the outlet 11 of the seat case 9 and the guide opening 7 of the housing frame 8. The upper end of the flammable refractory sheet 12 is pulled out smoothly along the guide groove 25 of the ceiling 4 and the lower end of the flammable refractory sheet 12 is successively pulled out in a state close to the bottom 5. The mainspring 20 is smoothly wound into the winding recess 18 of the pulley 17.

Further, by the winding action of the mainspring 20, the drawn-out end 13 and the flexible edge 14 of the flame-retardant refractory sheet 12 are held in an airtight manner on the other wall 3 of the shielded portion 1. And the flame-retardant refractory sheet body is
Since the drawer end 13 of the sheet 12 is reinforced and the upper end of the flame retardant sheet 12 is located in the guide groove 25 of the ceiling 4, the flame retardant sheet is heated by hot air at the time of fire. This flame-retardant fire-resistant sheet body 12 is
From the guide groove 25 and the wall 3 on the other side.

Next, when escaping from the front side of the flame-retardant fire-resistant sheet body 12 to the opposite side or from the opposite side to the front side, the escape indicator 26 of the flame-retardant fire-resistant sheet body 12 is pressed. When it moves, the exit display 26 of the flame-retardant fire-resistant sheet 12 is pushed up in the pushing direction, and the exit display 26 is
Opened as 27. Then, it is easily escaped from the emergency exit 27.

At this time, the emergency exit 27 of the flame-retardant refractory sheet 12
Due to the flexibility of the flexible edge piece 14 fixed to the drawer end 13 on the side, the escape indication part 26 is pushed and the flexible edge piece is pushed.
14 is bent in the pushing direction and easily opened as an emergency exit 27. After escape, the lower end of the flame-retardant refractory sheet 12 is surely restored by the resilience of the flexible edge piece 14, and the draw-out end 13 and the flexibility of the flame-retardant refractory sheet 12 are removed. The edge piece 14 abuts against the wall 3 on the other side of the shielded portion 1 again, and the shielded portion 1 is completely closed airtightly by the flame-retardant refractory sheet 12.

Further, since the exit sign 26 is displayed at the lower end of the flame-retardant refractory sheet body 12, it can be pushed using the exit sign 26 as a guide. You can easily escape.

Next, in the above embodiment, the urging means 19
Although the description has been given of the case where the mainspring 20 is used, the present invention is not limited thereto, and the urging means 19 may have a configuration including the guide roller 28, the weight body 29, and the drawer 30.

In this case, for example, as shown in FIG. 7 and FIG. 8, a vertical accommodation concave portion 31 opened on the wall surface of the wall portion 3 on the other side of the shielded portion 1 is formed at the upper end portion. A bracket 33 is attached to the upper end of the recess 31 so that the guide roller 28 is rotatably supported on a support shaft 32. Also, the guide roller 28 has the drawer 30
And the upper end of the drawer end 13 of the flame-retardant fire-resistant sheet 12 is fixed to one end 34 of the drawer 30, and the other end of the drawer 30 is inserted into the housing recess 31. , The weight body 29 is suspended.

The drawer 30 is made of a flame-retardant string, wire, cable or the like. The weight body 29 is positioned in the housing recess 31 and vertically moved along the wall 3 on the other side as the drawer body 30 advances and retreats through the guide roller 28. With the weight of the weight body 29, the draw-out end 13 of the flame-retardant refractory sheet body 12 can be always drawn out toward the wall 3 on the other side via the draw-out body 30 and the guide roller 28. It is being rushed.

Also, the other end wall portion 3 is attached to the drawn-out end 13 of the flame-retardant refractory sheet 12 and the inner end of the flexible edge piece 14.
Up and down magnetic material having flexibility in the form of a narrow plate facing the surface
35 are integrally fixed. Further, the other wall portion 3
In the opening surface of the accommodation recess 31, the magnetic body 35
A vertically narrow magnet body 36 in the form of a narrow plate for adsorbing the magnetic body 35 of the drawn-out end portion 13 of the flame-retardant refractory sheet body 12 is integrally fixed to the abutting portion of the wall portion 3 on the other side with which the abutment portion abuts. ing. The magnet body 36 is positioned and fixed on the same plane as the wall surface of the wall part 3 on the other side.

Other configurations are the same as those of the above-described embodiment, and therefore, the same components are denoted by the same reference numerals as those used in the above-described embodiment, and description thereof is omitted.

Next, the operation of the embodiment shown in FIGS. 7 and 8 will be described.

In a non-fire situation, the fire-resistant fire-resistant sheet 12 is accommodated in the seat case 9 in the housing frame 8 of the wall 2 on one side of the shielded portion 1. The withdrawal end 13 of the body 12 and a flexible lip 14 integral with the withdrawal end 13
Is held by the heat-sensitive means 23, that is, the hot-melt material 24. Therefore, the shielded portion 1 is opened as a passage.

In the event of a fire, the holding of the draw-out end 13 and the flexible rim 14 of the flame-retardant refractory sheet 12 is released by the heat-sensing means 23 which has sensed the heat of the fire. As a result, the heat melting material 24 is blown off by the heat and the weight of the weight 29 causes the drawer 30 and the guide roller 28
, The drawn-out end 13 and the flexible edge piece 14 of the flame-retardant refractory sheet 12 are drawn out toward the wall 3 on the other side of the shielded portion 1.

That is, the holding of the draw-out end 13 and the flexible edge piece 14 of the flame-retardant refractory sheet 12 is released,
The weight 29 descends while pulling the drawer 30 through the guide roller 28 by its weight. Then, with the drawer 30 pulled by the lowering of the weight body 29, the drawer end 13 and the flexible edge piece 14 of the flame-retardant refractory sheet 12 are attached to the wall 3 on the other side of the shielded part 1. The flame-retardant sheet 12
The magnetic body 35 fixed to the drawn end portion 13 and the flexible edge piece 14 is attracted to the magnet body 36 of the wall 3 on the other side of the shielded portion 1.

Accordingly, the draw-out end 13 and the flexible edge 14 of the flame-retardant refractory sheet 12 are attached to the magnet 36 of the other wall 3.
When the magnetic material 35 adhered to the surface is adsorbed, the shielded portion 1 is shielded by the flame-retardant refractory sheet 12 and is completely closed in an airtight manner. Then, the wall portion 3 on the other side of the shielded portion 1
The exit sign 26 appears at the lower end of the flame-retardant refractory sheet 12 located on the side.

At this time, the shielded portion 1 is shielded by a horizontally drawn flame-retardant refractory sheet body 12 which is drawn out from the wall portion 2 on one side of the shielded portion 1 toward the wall portion 3 on the other side. By doing so, it is possible to prevent an unexpected situation in which the fire-retardant refractory sheet 12 suddenly drops overhead or the like at the time of evacuation in the event of a fire.

Next, in the above embodiment, the pull-out end 13 and the flexible edge piece 14 of the flame-retardant refractory sheet 12 are supported by the urging force of the mainspring 20 against the wall 3 on the other side. However, the present invention is not limited to this. Similar to the embodiment shown in FIG. 7 and FIG.
A magnetic body 35 is integrally fixed to the drawn-out end 13 and the flexible edge piece 14 and the magnetic body 35 is attracted to the wall 3 on the other side.
36 may be fixed.

With such a configuration, FIG.
And a flame-retardant refractory sheet as in the embodiment shown in FIG.
The drawer end 13 and the flexible rim 14 of the 12 are securely sucked and supported by the wall 3 on the other side in an airtight manner, so that the shielded portion 1 is airtightly sealed by the flame-retardant refractory sheet 12. It is completely closed.

Next, in each of the above embodiments, the heat-sensitive means
Although the description has been given of the case where the hot-melt material 24 that is blown off by fire heat is used as 23, the present invention is not limited to this. Electrical means or the like having a fire heat detection sensor for detecting and operating to release the holding of the drawn-out end 13 of the flame-retardant refractory sheet body 12 may be used.

In each of the above embodiments, the magnetic body 35 is fixed to the drawn-out end 13 of the flame-retardant refractory sheet 12 and the inner end of the flexible edge piece 14, and the magnetic body 35 is in contact with the magnetic body 35. The case where the magnet body 36 for attracting the magnetic body 35 is fixed to the contact part of the other wall part 3 has been described. However, the present invention is not limited to this. A magnet body 36 is fixed to the inner end of the flexible edge piece 14, and the magnetic body attracted to the magnet body 36 at a contact portion of the wall 3 on the other side with which the magnet body 36 contacts.
35 may be fixed.

Next, in the above-described embodiment, the case where the urging means 19 having the mainspring spring 20 is used as the sheet body advancing means A has been described.
However, the present invention is not limited to this. For example, a cord reel having a mainspring spring 20 may be used, and the heat-sensitive means 23 holds the draw-out end 13 and the flexible edge piece 14 of the flame-retardant refractory sheet 12. May be used to store the shape so that the flame-retardant refractory sheet 12 is advanced toward the wall 3 on the other side when the heat release is released. 23 drawer end of flame-retardant fire-resistant sheet 12
An electric motor having an electric motor or the like configured to cause the flame-retardant refractory sheet body 12 to advance toward the wall 3 on the other side when the holding of the flexible frame 13 and the flexible edge piece 14 is released. You may make it.

In the above embodiment, the case where the cylindrical sheet case 9 around which the flame-retardant refractory sheet body 12 is wound is fixed in the housing frame 8 is not limited to this. The cylindrical sheet case 9 around which the flame-retardant refractory sheet body 12 is wound may be directly fixed. Further, the flame-retardant refractory sheet body 12 may be wound and housed in the housing recess 6 around a winding shaft 10 supported by upper and lower bearing bodies, and may be housed in the housing frame 8 by upper and lower bearing bodies. Alternatively, it may be wound around the winding shaft 10 that is rotatably supported.

[0063]

According to the first aspect of the present invention, in the event of a fire, the holding of the draw-out end of the flame-retardant refractory sheet is released by the heat-sensing means which has sensed the heat of the fire, and the sheet advancing means operates. The drawn-out end of the flame-retardant fire-resistant sheet is advanced toward the other wall of the shielded portion by the sheet-advancing means, and the drawn-out end of the flame-retardant fire-resistant sheet is connected to the shielded portion. It is reliably abutted against the wall on the other side, so that in the event of a fire, the part to be shielded can be quickly and reliably shielded by the flame-retardant refractory sheet and completely closed.

At this time, the shielded portion is shielded by a horizontally drawn flame-retardant refractory sheet which is protruded from one wall portion of the shielded portion toward the other wall portion. It is possible to reliably prevent an unexpected situation in which the fire-retardant refractory sheet body suddenly drops overhead or the like at the time of evacuation at the time of occurrence.

Further, there is no need to provide a relatively large storage space for storing the screen box on the ceiling of the shielded portion, and it is necessary to provide guide rails on both side walls of the shielded portion for guiding both ends of the fireproof sheet. Therefore, the construction is simple, the construction on site is easy, and the cost merit is great.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the heat-sensitive means is made of a heat-melting material, the heat-melting material is blown off by fire heat at the time of fire, and the sheet advance means is provided. The drawn-out end of the flame-retardant fire-resistant sheet body is advanced toward the wall on the other side of the part to be shielded, and can reliably contact the wall on the other side of the part to be shielded. The part to be shielded can be completely closed by the body. Further, since the heat-fusible material is used as the heat-sensitive means, the heat-fusible material is reliably blown by the heat of the fire that has risen to a predetermined temperature, so that it is possible to quickly respond to a fire. Installation work for holding the drawn end of the fire-resistant refractory sheet body in case of fire can also be facilitated.

According to the third aspect of the present invention, in addition to the effects of the first aspect, the sheet body advancing means is provided on the other wall and one end is fixed to the drawn-out end of the flame-retardant fire-resistant sheet. Since the flame-retardant refractory sheet body is formed by the urging means which constantly urges the flame-retardant sheet body toward the wall on the other side, the holding of the drawer end of the flame-retardant fire-resistant sheet body is released, and the urging means is released. Activate, pull out the drawn-out end of the flame-retardant refractory sheet body toward the other wall of the shielded portion by the biasing force of the biasing means,
The drawn-out end of the flame-retardant fire-resistant sheet can be reliably brought into contact with the wall on the other side of the shielded portion, and the flame-retardant fire-resistant sheet can be reliably held in a state where the shielded portion is shielded.

According to the invention of claim 4, in addition to the effect of the invention of claim 3, the biasing means is provided on the other wall and one end is fixed to the drawn-out end of the flame-retardant fire-resistant sheet. As the spring is formed, the holding of the drawn-out end of the flame-retardant refractory sheet is released and the spring is actuated, and the spring-in action of the spring causes the drawn-out end of the flame-retardant fire-resistant sheet. Is drawn out toward the other wall of the shielded part, and the drawn-out end of the flame-retardant fire-resistant sheet can be reliably brought into contact with the other wall of the shielded part. Can be reliably held in a state where the shielded portion is shielded.

Further, the structure of the urging means is simple, does not require a large accommodation space, does not require an electric drive source for drawing out the flame-retardant refractory sheet, and has a small number of parts.
The overall structure is simple and construction is easy.

According to the fifth aspect of the present invention, in addition to the effect of the first aspect, the urging means includes a guide roller provided on the other side wall, and an up-and-down direction along the other side wall. Since the weight body to be moved has a drawer engaged with the guide roller and having one end fixed to the drawer end of the flame-retardant fire-resistant sheet body and the other end suspended from the weight body, The holding of the draw-out end of the flame-retardant fire-resistant sheet body is released by the heat-sensitive means that has sensed the heat of the fire at the time of the fire, and the weight body descends while pulling the draw-out body via the guide roller due to its weight. The drawn-out end of the flame-retardant refractory sheet is pulled out toward the other wall of the shielded portion by a drawer pulled by the lowering of the weight body, and the drawn-out end of the flame-retardant fire-resistant sheet is pulled out. Part can reliably contact the wall part on the other side of the part to be shielded. It can be securely held in the shielding state.

Further, the structure of the urging means is simple, does not require a large accommodating space, does not require an electric drive source for drawing out the flame-retardant refractory sheet, and has a simple structure as a whole and is easy to construct. It is.

According to the invention of claim 6, according to claims 1, 3,
In addition to the effects of the invention described in any one of the fourth and fifth aspects, a magnetic material is attached to one of the drawn-out end of the flame-retardant refractory sheet and the contact portion of the other wall with which the drawn-out end contacts. Since the magnet body for adsorbing the magnetic material is provided on the other side, the drawn-out end of the flame-retardant fire-resistant sheet is brought into contact with the wall on the other side of the shielded portion. For example, the magnetic body at the drawn-out end of the sheet body is securely attracted by the magnet body on the other wall of the shielded portion, and the magnet body and the magnetic body cover the drawn-out end of the flame-retardant refractory sheet body. The space between the shielding portion and the other wall portion can be reliably kept airtight.

Further, even if the flame-retardant refractory sheet that shields the shielded portion is heated by hot air or the like, the magnet body and the magnetic material allow the drawn-out end of the flame-retardant fire-resistant sheet and the other side of the shielded portion. It is possible to prevent hot air or the like from flowing out from between the drawn-out end of the flame-retardant fire-resistant sheet body and the wall on the other side of the shielded part, without easily separating from the wall. ,
In the event of a fire, the spread of smoke and the spread of fire can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fireproof screen device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of the same.

FIG. 3 is a vertical sectional side view of the same.

FIG. 4 is a perspective view of a mounting portion of the same urging means and a flame-retardant refractory sheet body.

FIG. 5 is a perspective view showing a shielded state of the shielded portion.

FIG. 6 is an explanatory diagram showing an escape state according to the first embodiment;

FIG. 7 is a perspective view of a refractory screen device according to another embodiment.

FIG. 8 is a perspective view showing a shielded state of the shielded portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shielded part 2 One side wall part 3 The other side wall part 12 Flame-retardant refractory sheet body 13 Pull-out end part 19 Energizing means 20 Spring spring 23 Heat-sensitive means 24 Hot-melt material 28 Guide roller 29 Weight body 30 Pull out Body 35 Magnetic body 36 Magnet body A Sheet body advance means

Claims (6)

[Claims] 1. A flame-retardant fire-resistant sheet body, which is provided so as to be able to be drawn out on one of two opposite side walls of a shielded portion and shields the shielded portion when it is pulled out, and said one side when no fire occurs. A heat-sensitive means for holding the drawn-out end of the flame-retardant fire-resistant sheet body on the wall of the fire-resistant sheet and releasing the holding of the drawn-out end of the fire-resistant fire-resistant sheet body by this fire heat in the event of a fire. And sheet body advancing means for advancing the flame-retardant fire-resistant sheet toward the other wall when the holding of the drawn-out end of the flame-retardant fire-resistant sheet is released. Fireproof screen equipment. 2. The fire-resistant screen device according to claim 1, wherein the heat-sensitive means is made of a hot-melt material. 3. The sheet body advancing means is provided on the other wall, and has one end fixed to the drawn-out end of the flame-retardant fire-resistant sheet, and always faces the flame-retardant fire-resistant sheet toward the other wall. 2. The device according to claim 1, wherein said biasing means is formed by biasing means.
The refractory screen device as described. 4. The spring according to claim 3, wherein the biasing means is formed by a mainspring provided on the other side wall and having one end fixed to a drawn-out end of the flame-retardant refractory sheet. Fire screen equipment. 5. A biasing means includes a guide roller provided on the other wall, a weight moving up and down along the other wall, and one end engaged with the guide roller. 2. A fireproof screen device according to claim 1, further comprising a drawer body fixed to a drawer end of the fire-retardant fire-resistant sheet body and the weight body suspended from the other end. 6. A magnetic body is provided on one of a drawn-out end of the flame-retardant refractory sheet and a contact portion of the other wall with which the drawn-out end contacts, and the magnetic material is provided on the other side. 4. A magnet body for attracting a magnetic force is provided.
4. The refractory screen device according to any one of items 4 and 5.