JPH10314328A - Fireproof screen equipment - Google Patents

Abstract

(57) [Summary] [Problem] The emergency escape exit 24 can be easily opened by pushing the fireproof sheet door 26 closing the emergency escape exit 24 in the escape direction, and the escape or rescue operation can be performed quickly and. Provided is a refractory screen device that can be performed smoothly. SOLUTION: A guide rail 1 and an ascending and descending refractory sheet member 9 having both ends inserted into an insertion opening 3 of the guide rail 1 are provided.
And a weight body 14. The fire-resistant sheet member 9 is provided at a substantially intermediate portion of the fire-resistant sheet member 9, and the fire escape bar 12 is opened between the fire-resistant bar member 12 and the weight body 14 in the width direction of the fire-resistant sheet member 9. An exit 24, a fire-resistant sheet door 26 pivotally supported by the fire-resistant cross member 12 to open and close the emergency exit 24, and a fire-resistant seat door 26 provided on the fire-resistant cross member 12 to always close the emergency exit 24 And a door closing means 42 which is capable of opening and rotating the refractory sheet door 26 when the refractory sheet body is pushed and held.

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 Conventionally, as this type of refractory screen device, for example, as described in JP-A-8-164218, both ends in the width direction are adjacent to a winding shaft. A plurality of band-shaped sheets each having one end wound thereon and hanging downward are provided, and a bar-shaped weight having a length substantially equal to the width of the band-shaped sheet is attached to a lower end of each band-shaped sheet, and adjacent to both ends of each bar-shaped weight. There is known a configuration in which magnets for attracting both ends of a bar-shaped weight to be attached are attached, and magnets for attracting a metal plate installed on a floor surface are attached to the lower surface of each bar-shaped weight.

Further, a single fireproof sheet is wound around an upper end of the winding shaft and hangs downward. The fireproof sheet is vertically placed on the lower end of the fireproof sheet so that both ends in the width direction overlap each other. There has been proposed a configuration in which a plurality of strip-shaped refractory sheet pieces in the same direction are fixed side by side, and a rod-shaped weight which is attached to the floor surface when the refractory sheet is unwound and lowered is attached to the lower end of each refractory sheet piece. .

[0004]

In the configuration described in the above publication, both ends of each bar-shaped weight at the lower end of each band-shaped sheet are attracted, and the metal plate on the floor surface is attracted to each bar-shaped weight. In general, since each bar-shaped weight is fixed in a series, it is not easy to separate the bar-shaped weights from each other and the bar-shaped weight and the metal plate on the floor at the time of escape or rescue operation. There is a problem that it takes time for activities and the like, which may cause an unexpected situation.

In a configuration in which a plurality of strip-shaped refractory sheet pieces are juxtaposed and fixed to the lower end of the refractory sheet, and a rod-shaped weight is attached to the lower end of each refractory sheet piece, the refractory sheet is used for escape or rescue operation. It is necessary to turn up a fire-resistant sheet piece having a rod-shaped weight at a predetermined position to perform escape or rescue activities. is there.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an emergency exit is easily opened without trouble by pushing a fireproof sheet door closing an emergency exit in an escape direction. It is an object of the present invention to provide a fire-resistant screen device capable of performing an escape or rescue operation quickly and smoothly.

[0007]

According to a first aspect of the present invention, there is provided a refractory screen device, comprising: a guide rail fixed to both sides of a shielded portion, opposed to each other, and having a vertically inserted insertion opening; A flame-retardant fire-resistant sheet body, which is provided to be vertically movable by inserting both end portions in the width direction into the insertion opening of the guide rail, and a fire-resistant sheet attached to the lower end of the fire-resistant sheet body And a flame-retardant weight that lands on the floor surface of the shielded part when the shielded part is shielded by a body. A fire-resistant fire-resistant cross member in the width direction of the fire-resistant sheet body, which is provided at a substantially intermediate portion and has both side ends inserted into the insertion openings of the guide rails on the both side portions, An emergency exit which is located between the weight body and the opening, A fire-retardant fire-resistant sheet door rotatably supported by the fire bar to open and close the emergency exit; and a closed position provided on the fire bar to close the fire exit at all times. And a door closing means that can open and rotate the fireproof sheet door when the fireproof sheet door is pushed.

[0008] Then, the fire-resistant sheet is lowered and the weight of the fire-resistant sheet and the middle bar of the fire-resistant sheet are guided and lowered along the guide rails on both sides by the weight. In addition, when the weight body lands on the floor surface of the shielded portion, the shielded portion is completely shielded by the fireproof sheet.

At this time, since the fireproof sheet door is held at the closed position for closing the emergency exit by the door closing means,
The fireproof sheet body is lowered with the fire escape door closed with the emergency exit. Therefore, when the weight body lands on the floor surface of the shielded portion, the shielded portion is completely shielded by the fireproof sheet.

Therefore, in the event of a fire, smoke or the like in the fire-resistant sheet is from the near side of the shielded part to the side opposite to the front side, that is, from one side of the fire-resistant sheet to the other side of the fire-resistant sheet, or of the fire-resistant sheet. It is prevented from flowing out from the other side toward the one side, and the diffusion of such smoke and the spread of fire are prevented.

Next, when the fire escapes due to the occurrence of a fire, the fireproof sheet door is pushed toward the escape direction, so that the fireproof sheet door opens around the support shaft in the escape direction. The emergency exit is easily opened by the fireproof sheet door while being rotated. Therefore, it is possible to easily and quickly escape from the emergency exit to evacuate or perform a rescue operation.

After the vehicle escapes from the emergency exit or passes through the emergency exit for rescue activities, the fire-resistant sheet door is turned by the door closing means around the support shaft in the direction of closing the emergency exit. The fire escape sheet door is closed again by the fireproof sheet door, and the fireproof sheet door is held at the closed position.

Therefore, escape from the emergency exit,
After passing through the emergency exit for rescue activities, etc., with the fire exit door closed, smoke or the like from the fireproof sheet body from the near side of the shielded part to the opposite side from the front side or It is prevented from flowing out from the other side toward the near side,
In addition, the spread of the smoke and the spread of the smoke are prevented.

According to a second aspect of the present invention, there is provided the fireproof screen apparatus according to the first aspect, wherein the fireproof sheet door is rotatably supported by the crosspiece member during the fire, about a vertical support shaft. One side end in the width direction centering on the axis is overlapped on one side edge of the emergency exit from one surface side of the refractory sheet body, and the other side in the width direction centering on the support shaft The emergency exit is closed as a margin on the other side where the end is overlapped with the other side edge of the emergency exit from the other surface side of the refractory sheet body.

When the emergency exit is closed by the fire-resistant sheet door, one side edge of one end of the fire-resistant sheet door in the width direction around the support shaft is overlapped with one edge of the emergency exit. The fire-resistant sheet body is superimposed on one side of the fire-resistant sheet body, and the other side edge of the other side of the fire-resistant sheet door centered on the support shaft is overlapped with the other side edge of the emergency exit. Overlaid from the other side. Therefore, when the emergency exit is closed with the fireproof sheet door, the airtightness of the emergency exit is ensured, and the smoke and the like are prevented from flowing out from the emergency exit with the fireproof sheet door, and the smoke and the like are prevented from flowing out. Diffusion and spread of fire are prevented.

According to a third aspect of the present invention, there is provided the fireproof screen apparatus according to the first aspect, wherein the fireproof sheet door is closed when the emergency exit is closed. And a closing piece for closing the space between the upper and lower portions.

When the emergency exit is closed by the fire-resistant sheet door, the closing piece reliably closes the gap between the upper end of the fire-resistant sheet door and the lower end of the fire-resistant inside bar member. The airtightness between the upper end portion of the inner member and the lower end portion of the cross-bar member during fire resistance is secured. Therefore, it is possible to prevent smoke and the like from flowing out from between the upper end of the fire-resistant sheet door and the lower end of the cross-bar member during fire, and to prevent the smoke and the like from spreading and spreading.

According to a fourth aspect of the present invention, there is provided a fireproof screen apparatus according to the first aspect, wherein the fireproof sheet door has a sheet holding frame at an upper end portion in a width direction of the fireproof sheet door. A frame, which is located at an intermediate portion of the sheet holding frame, is integrally protruded upward, and is vertically rotatably supported by the fire-resistant crosspiece;
A closing piece that is integrally protruded upward along the sheet holding frame and closes a gap between the lower end portion of the fire-resistant crosspiece member.

The refractory sheet door is opened and rotated about the support shaft in the escape direction. At this time, the refractory sheet door has a seat holding frame provided with a support shaft at the upper end. The refractory seat door is smoothly opened and rotated about the support shaft in the escape direction by the seat holding frame.

Further, when the emergency exit is closed by the fire-resistant sheet door, the closing piece provided on the sheet holding frame ensures that the upper end of the fire-resistant sheet door and the lower end of the fire-resistant sheet member are securely connected. Closed.

According to a fifth aspect of the present invention, there is provided a fireproof screen device according to the first aspect, wherein the door closing means fixes one end to the fireproof bar and the other end to the fireproof sheet door. It has a spring which always biases and holds the seat door in a closed position which closes the emergency exit.

Then, the refractory sheet door is always urged and held by the spring at the closed position where the emergency exit is always closed.
When the emergency exit is opened, the fire-resistant seat door is opened and rotated against the spring, but escapes from the emergency exit and the fire-resistant seat door is centered on the support shaft by the return force of the spring. The emergency exit is quickly closed by the fireproof sheet door.

According to a sixth aspect of the present invention, there is provided the fireproof screen device according to the first aspect, wherein the door closing means is fixed to the inside of the fireproof crosspiece, and is inclined at an upper end through a shaft insertion hole penetrating in a vertical direction. A fixed cam having a cam surface;
A vertical support shaft integrally protruded from the upper end of the fireproof sheet door and rotatably inserted into the shaft insertion hole of the fixed cam;
A movable cam fixed to the upper end of the support shaft and engaged with the cam surface of the fixed cam when the emergency exit is closed and pushed up by the cam surface of the fixed cam when the emergency exit is opened at the lower end. And having.

When the emergency exit is closed by the fire-resistant sheet door, the inclined engagement surface of the movable cam is taperedly engaged with the inclined cam surface of the fixed cam by the weight of the fire-resistant sheet door. The door is kept closed at the emergency exit.

Further, the fireproof sheet door is opened and movable in the escape direction about the support shaft inserted into the shaft insertion hole of the fixed cam, and the movable cam fixed to the support shaft of the fireproof sheet door is engaged. The surface is pushed up and rotated by the inclined cam surface of the fixed cam. Then, when the fireproof sheet door is largely opened and moved so that it can escape, the engagement surface of the movable cam of the fireproof sheet door is engaged with the upper end of the inclined cam surface of the fixed cam.

After escape from the emergency escape exit, the engaging surface of the movable cam of the fireproof sheet door is pivoted down along the inclined surface of the cam surface of the fixed cam by the weight of the fireproof sheet door, and The fireproof sheet door is automatically closed and rotated on the inclined cam surface of the fixed cam via the engagement surface of the movable cam.

When the emergency exit is closed by the fire-resistant sheet door, the inclined engagement surface of the movable cam is taperedly engaged with the inclined cam surface of the fixed cam by the weight of the fire-resistant sheet door. The door is kept closed at the emergency exit.

[0028]

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

Numerals 1 denote vertical left and right guide rails which are vertically fixed to opposing side walls of the shielded portion 2 respectively. The opening 3 is opened to form a substantially U-shaped cross section, and the facing inserting opening 3 is formed by front and rear vertical guide pieces 4 which are folded back toward the outside in parallel. ing.

A screen box 6 into which the upper ends of the left and right guide rails 1 are inserted is fixed to an upper side wall portion 5 such as an upper frame of the shielded portion 2, and the screen box 6 is attached to a lower end portion. Left and right guide ports 7 are opened to communicate with the insertion ports 3 of the left and right guide rails 1 respectively.

A left-right winding drum 8 is rotatably mounted in the screen box 6 and is linked to a forward / reverse motor (not shown), which is not shown. It is activated by a fire signal from the control means.

Next, the upper end of a flame-retardant fire-resistant sheet 9 which can shield the shielded portion 2 and which can freely move up and down is fixedly wound around the winding drum 8.
Is lowered by rewinding the winding drum 8 with both ends in the width direction inserted into the insertion openings 3 of the left and right guide rails 1 to shield the shielded portion 2.

The fire-resistant sheet 9 is made of a fire-resistant sheet made of a single piece of fire-retardant cloth or the like, and a fire-retardant cloth that is connected to the fire-resistant sheet 10 on both sides of the fire-resistant sheet 10. A plurality of refractory sheet pieces 11 in the vertical direction formed in a predetermined width by, for example, and the plurality of Fire-resistant crosspiece member 12 for connecting the upper ends of the fire-resistant sheet pieces 11
And a weight body 14 that is attached to the lower end of the plurality of refractory sheet pieces 11 and that is flame-retardant in the left-right direction and landed on the floor surface 13 of the shielded portion 2.

Then, the one-piece refractory sheet 10
The upper end thereof is fixedly wound around the winding drum 8 and is wound on both sides thereof, and both end portions 15 in the width direction thereof are inserted into the insertion openings 3 of the left and right guide rails 1 so as to be able to move up and down. A round bar 16 for retaining is integrally attached to the entire length of the sheet 10 in the width direction.

The plurality of refractory sheet pieces 11 are integrally provided with round bars 17 for retaining them over the entire length of the refractory sheet pieces 11 over their entire length in the width direction. Outer ends 18 are respectively inserted into the insertion openings 3 of the left and right guide rails 1 so as to be able to move up and down, and lower ends thereof are integrally attached to the weight 14.

The cross-bar member 12 has a first connecting plate 19 formed of metal at a predetermined width in the left-right direction, and the width of the first connecting plate 19 is provided at both ends in the width direction. A second connecting plate 21 having a substantially U-shaped cross section having engaging pieces 20 opposed to both side ends in the direction, and the second connecting plate 21 on the first connecting plate 19 with a spacer 22 interposed therebetween. And a fixing screw 23 such as a countersunk screw to be attached.

The refractory sheet 10 is placed between one end in the width direction of the first connection plate 19 and the engagement piece 20 at one end in the width direction of the second connection plate 21. The lower end of the refractory sheet 10 is sandwiched via a round bar 16 at the lower end, and the first
Between the other end of the connecting plate 19 in the width direction and the engaging piece 20 at the other end of the second connecting plate 21 in the width direction. With the upper end portions of the plurality of refractory sheet pieces 11 held therebetween via the
The first connecting plate 19 and the second connecting plate 21 are provided at both ends of the spacer 22 interposed between the first connecting plate 19 and the second connecting plate 21 with the fixing screws.
23, the first connecting plate 19
The first connecting plate 19 and the second connecting plate 21 respectively connect the upper end of the plurality of refractory sheet pieces 11 to the lower end of the refractory sheet 10. .

Further, the refractory sheet body 9 is provided between the plurality of refractory sheet pieces 11, ie, opposing inner ends of the refractory sheet pieces 11 on both sides, and the fireproof middle bar member 12 and the weight body 14. It has an emergency evacuation outlet 24 formed by these. This emergency exit 24 is formed in a rectangular shape having a predetermined width and long in the vertical direction.

Further, the fire-resistant sheet body 9 is rotatably supported by the vertical support shaft 25 on the cross-bar member 12 during fire resistance, and is a fire-resistant fire-resistant sheet door 26 for opening and closing the emergency exit 24. have.

The fireproof sheet door 26 is connected to the emergency exit 24
And a sheet bar 26a formed in a rectangular shape with a size that can be opened and closed. A round bar 27 for retaining is integrally attached to the upper end of the sheet member 26a over the entire length of the sheet member 26a in the width direction. A sheet holding frame 28 for holding the sheet piece 26a is attached via the round bar 27 over the entire length of the sheet piece 26a in the width direction.

Then, the sheet piece 26 of the fireproof sheet door 26 is provided.
a is a one-side end overlap margin 29 in which one end in the width direction around the support shaft 25 is overlapped with one edge of the emergency exit 24 from one surface side of the refractory sheet body 9; The other end portion in the width direction around the shaft 25 is formed on the other side edge of the emergency exit 24 from the other surface side of the refractory sheet body 9 as another side end allowance 30.

The sheet holding frame 28 is formed of a first holding plate 31 formed of metal at a predetermined width in the left and right direction, and two end portions in the width direction of the first holding plate 31 in the width direction. A second section having a substantially U-shaped cross-section and having holding pieces 32 opposed to both side ends, respectively.
The holding plate 33 and the second holding plate
Fixing screws such as flathead screws that attach 33 via spacers 34
35 and the support shaft integrally protruded upward from the left and right intermediate portion of the holding piece 32 on the upper part of the second holding plate 33.
25.

Then, the holding piece 32 on the one side end of the second holding plate 33 in the width direction is brought into contact with one side end of the first holding plate 31 in the width direction, and Between the other end in the width direction of the holding plate 31 and the holding piece 32 at the other end in the width direction of the second holding plate 33, a round bar 27 at the upper end of the sheet piece 26a is inserted. With the upper end of the sheet piece 26a held therebetween, the first holding plate 31 and the second holding plate are attached to both ends of the spacer 34 interposed between the first holding plate 31 and the second holding plate 33. The second holding plate 33 is fixed to the first holding plate 31 by screwing the fixing screws 35 from 33, respectively, and the first holding plate 31 and the second holding plate 33 A sheet holding frame 28 is integrally connected to the upper end of the piece 26a.

The support shaft 25 of the sheet holding frame 28 is inserted into an insertion hole formed in the lower engagement piece 20 of the second connection plate 21.
A large-diameter head 37 having a diameter larger than that of the insertion hole 36 is formed integrally with the upper end of the support shaft 25 so as to be able to rotate. And the spindle having the large-diameter head 37
The fire-resistant sheet door that protrudes the support shaft 25 around the center 25
26 is attached to the fireproof crosspiece 12 so as to be openable and closable and open and rotatable in the escape direction.

[0045] Further, the first
On one side of the holding plate 31, when the emergency exit 24 is closed by the fireproof sheet door 26, the upper end of the first holding plate 31 and the first connecting plate A closing piece 38 for closing the space between the lower end portion 19 and the lower end portion 19 is integrally protruded upward. In addition, the second holding plate around the support shaft 25
When the emergency exit 24 is closed by the fireproof sheet door 26, the upper end of the second holding plate 33 and the lower end of the second connecting plate 21 of the fireproof bar member 12 are provided on the other side of the fireproof sheet door 26. A closing piece 39 for closing the space between the two is integrally provided to project upward.

The sheet piece 26a of the fireproof sheet door 26
At the lower end of the emergency exit 24 facing the closing piece 38
Abutment piece that contacts one side surface of the weight body 14 when the body is closed
When the emergency evacuation exit 24 is closed facing the closing piece 39 and the closing piece 39, a contact protruding piece 41 that comes into contact with the other side surface of the weight body 14 is integrally provided.

Further, the fire-resistant sheet member 9 is provided with the fire-resistant sheet door 26 always attached to the fire-resistant inside bar member 12 in the emergency exit.
A door closing means 42 is provided which holds the refractory sheet door 26 in the closed position while allowing the refractory sheet door 26 to open and rotate toward the escape direction when the emergency escape is performed.

The door closing means 42 has a spring 43,
The spring 43 is formed by a tension spring, that is, a coil spring 44. The coil spring 44 has, at one end, one extension 45 fixed to the fire-resistant crosspiece member 12, and at the other end engaged with the support shaft 25, the lower part of the second connecting plate 21. The other extension line portion fixed from the engagement piece 20 to the holding piece 32 above the second holding plate 33
Has 46

Thus, the refractory sheet 10 and the plurality of refractory sheet pieces 11 of the refractory sheet body 9 and the refractory sheet door
The 26 sheet pieces 26a are made of, for example, a flame-retardant cloth such as glass cloth or silica cloth.

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

When the motor is operated by a fire signal from the control means in the event of a fire that shields the shielded portion 2, the winding drum 8 is driven to rotate in the direction of rewinding the refractory sheet body 9 by the output from the motor. Then, the refractory sheet 9 is sequentially rewound by the winding drum 8, and the refractory sheet 9 is guided by the weights 14 of the weights 14 into the insertion openings 3 of the left and right guide rails 1 and quickly lowered. You.

Then, the weight body 14 is placed on the floor surface of the shielded portion 2.
By landing on the floor 13, the landing of the weight body 14 is detected, the detection signal is output to the control means, the control means is operated by the detection signal, and the stop signal from the control means is used to stop the motor. Operation is stopped. Therefore, when the weight body 14 is placed on the floor surface 13 of the shielded portion 2, the shielded portion 2 is completely shielded by the fireproof sheet body 9.

At this time, the coil spring of the door closing means 42
Since the fireproof sheet door 26 is held at the closed position for closing the emergency exit 24 at 44, the fireproof sheet body 9 is lowered with the fireproof sheet door 26 closed.

Then, the fire escape door 24 is connected to the fireproof sheet door 26.
In a state where is closed, one side end overlap margin 29 of one side end of the width direction of the fireproof sheet door 26 is overlapped with one side edge of the emergency exit 24 from one side of the fireproof sheet body 9, The other-side overlapping margin 30 of the other end of the refractory sheet door 26 in the width direction is overlapped on the other side edge of the emergency exit 24 from the other side of the refractory sheet body 9.

Therefore, when the portion to be shielded 2 is entirely covered by the fire-resistant sheet body 9, both end portions 15 of the fire-resistant sheet 10 are inserted into the insertion openings 3 of the left and right guide rails 1, and both sides are inserted. Since both outer ends 18 of the refractory sheet pieces 11 are inserted into the insertion openings 3 of the left and right guide rails 1, smoke or the like is emitted from the refractory sheet body 9 from one side of the refractory sheet body 9 in the event of a fire. It is prevented from flowing toward the other side of the refractory sheet body 9 or from the other side of the refractory sheet body 9 toward one side of the refractory sheet body 9, and the diffusion and spread of smoke and the like are prevented.

When the emergency exit 24 is closed by the fire-resistant sheet door 26, the one-side end overlapping margin 29 is overlapped on one side edge of the emergency exit 24 from one side of the fire-resistant sheet body 9. At the same time, the other side end overlap margin 30 is overlapped on the other side edge of the emergency exit 24 from the other side of the refractory sheet body 9, and one of the contact protruding pieces 40 at the lower end thereof is connected to the weight body 14. While being in contact with one side surface, the other contact protruding piece 41 is in contact with the other side surface of the weight body 14, and one closing piece 38 is connected to the first connecting plate.
19, and the other closing piece 39 is in contact with the second connecting plate 21, whereby the fireproof sheet door 26 ensures the airtightness of the emergency exit 24, Smoke and the like are prevented from flowing out of the emergency exit 24 at the seat door 26, and diffusion and spread of the smoke and the like are prevented.

Next, when the fire escapes due to the occurrence of a fire, the fire-resistant sheet door 26 is pushed toward the escape direction so that the fire-resistant sheet door 26 is moved by the coil spring 44 of the door closing means 42. The fireproof sheet door 26 allows the emergency escape exit 24 to be easily opened by opening and rotating around the support shaft 25 in the escape direction.

At this time, the overlap margins 29, 30 at both ends, the closing pieces 38, 39 at both sides, and the contact protruding pieces 40, 41 at both sides are respectively directed toward the opening rotation direction of the fireproof sheet door 26. The refractory sheet door 26 is smoothly opened and rotated about the support shaft 25 in the escape direction without receiving these resistances.

Therefore, when the fireproof sheet door 26 is pushed in the escape direction, the emergency exit 24 is smoothly opened, and escapes and escapes easily and quickly from the emergency exit 24. Rescue activities can be performed.

After the vehicle escapes from the emergency exit 24 or passes through the emergency exit 24 for rescue operations, etc., the return force of the coil spring 44 of the door closing means 42 causes the fireproof sheet door to move.
The emergency exit 26 is automatically closed and rotated about the support shaft 25 in the direction of closing the emergency exit 24 smoothly, and the emergency exit 24 is quickly closed again by the fireproof sheet door 26. 26 is held in the closed position.

Therefore, after escaping from the emergency exit 24 or passing through the emergency exit 24 for rescue operations,
With the fire escape door 24 closed by the fireproof sheet door 26, smoke or the like from the fireproof sheet body 9 from one side of the fireproof sheet body 9 to the other side of the fireproof sheet body 9 or the other side of the fireproof sheet body 9 From the surface to the one surface side, and the diffusion and spread of the smoke and the like are prevented.

Next, in the above embodiment, the door closing means
42 is formed by a coil spring 44 such as a tension spring, and an extension line portion 45 at one end of the coil spring 44 is formed.
Is fixed to the cross-bar member 12 during fire resistance, and the extension wire portion 46 at the other end of the coil spring 44 is engaged with the support shaft 25 so that the second holding plate 21 Although the case of fixing to the holding piece 32 on the upper part of 33 has been described, the invention is not limited to this. For example, as shown in FIG. It may be wound around 25, one end of which is fixed to the cross-bar member 12 during fire resistance, and the other end is fixed to the support shaft 25.

Since other configurations are the same as those of the above-described embodiment, the same components as those of the above-described embodiment are denoted by the same reference numerals as those of the above-described embodiment, and description thereof is omitted.

With this configuration, the coil spring 44 is provided in the fire-resistant cross member 12 via the support shaft 25 and is provided by the coil spring 44 via the support shaft 25. 26 is always biased and held at a closed position for closing the emergency exit 24, and the fire-resistant sheet door 26 is opened and rotated around the support shaft 25 in the escape direction against the coil spring 44 at the time of emergency escape.

Next, in each of the above embodiments, the case where the door closing means 42 is formed by a coil spring 44 such as a tension spring has been described. However, the present invention is not limited to this. A cam mechanism 48 having a spring 47 may be used.

In this case, as shown in FIGS. 9 to 12, a fixed cam 49 is fixed inside the fireproof bar member 12, that is, on the engagement piece 20 below the second connecting plate 21. Cam49
A shaft insertion hole 50 through which the support shaft 25 is rotatably inserted is formed at the center of the shaft. The shaft insertion hole 50 is formed at the upper end of the fixed cam 49 at the opening edge of the shaft insertion hole 50. A tapered cam surface 51 is formed which is inclined downward at a predetermined inclination angle from the portion toward the other end.

A movable cam 52 is fixed to the upper end of the support shaft 25 projecting above the cam surface 51 of the fixed cam 49.
At the lower end of the movable cam 52, an engagement surface 53 is formed which is engaged with the cam surface 51 of the fixed cam 49 when the emergency exit is closed and is pushed up by the cam surface 51 of the fixed cam 49 when the emergency exit is opened. This engaging surface 53 is formed in a tapered shape which is inclined downward at a predetermined inclination angle from one end to the other end similarly to the cam surface 51 of the fixed cam 49.

Further, the coil spring 47 is wound around the support shaft 25 in the shaft insertion hole 50 of the fixed cam 49, one end of which is fixed to the support shaft 25, and the other end of which is movable. It is fixed to the cam 52.

The movable cam 52 is constantly urged by the coil spring 47 so that the engagement surface 53 of the movable cam 52 is taperedly engaged with the cam surface 51 of the fixed cam 49. A refractory seat door 26 having 52 is adapted to keep the emergency exit 24 closed.

Since other configurations are the same as those of the above embodiments, the same components as those of the above embodiments are denoted by the reference numerals used in the above embodiments, and the description thereof is omitted. .

With this configuration, when the emergency exit 24 is closed by the fireproof sheet door 26, the inclined cam surface of the fixed cam 49 due to the weight of the fireproof sheet door 26 and the urging force of the coil spring 47. The inclined engagement surface 53 of the movable cam 52 is taperedly engaged with 51, and the fireproof sheet door 26 is moved to the emergency exit 24.
Is kept closed.

The fire-resistant sheet door 26 is pivotally opened in the escape direction about the support shaft 25 inserted into the shaft insertion hole 50 of the fixed cam 49, and the support shaft of the fire-resistant sheet door 26 is opened.
The movable cam 52 fixed to 25 is rotated against the coil spring 47, and the engaging surface 53 of the movable cam 52 is pushed up and rotated by the inclined cam surface 51 of the fixed cam 49. When the refractory sheet door 26 is opened and rotated so as to be able to escape, the engagement surface 53 of the movable cam 52 of the refractory sheet door 26 is fixed.
Is engaged with the upper end of the inclined cam surface 51.

After the escape from the emergency exit 24, the engagement surface 53 of the movable cam 52 of the fireproof sheet door 26 is fixed by the weight of the fireproof sheet door 26 and the restoring force of the coil spring 47.
The movable cam 52 is rotated down along the inclined surface of the cam surface 51 of the
The refractory sheet door 26 is automatically closed and rotated via the engagement surface 53 of the second member.

Then, the fire escape door 24 at the fireproof sheet door 26 is used.
When the fireproof sheet door 26 is closed, the inclined engagement surface 53 of the movable cam 52 is taperedly engaged with the inclined cam surface 51 of the fixed cam 49 by the weight of the fireproof sheet door 26 and the coil spring 47, so that the fireproof sheet door 26 becomes emergency. The exit 24 is kept closed.

[0075]

According to the first aspect of the present invention, the fireproof sheet door is held at the closed position for closing the emergency exit by the door closing means, so that the fireproof sheet body having the fireproof sheet door has a shielded portion. When the fireproof sheet is completely shielded, smoke and the like in the event of a fire may be generated from one side of the fireproof sheet to the other side of the fireproof sheet, or from the other side of the fireproof sheet to one side of the fireproof sheet. Outflow toward the side can be reliably prevented.

Further, when performing an escape or the like, the fireproof sheet door closing the emergency exit is pushed in the escape direction to open the fireproof sheet door about the support shaft in the escape direction. The emergency exit can be easily opened with this fireproof sheet door, and therefore, the emergency exit can be easily opened without any trouble, and it is possible to easily and quickly escape from this emergency exit and evacuate, Rescue activities can be performed smoothly.

Also, after escaping from the emergency exit or passing through the emergency exit for rescue activities, the door closing means moves the fireproof sheet door around the support shaft in the direction to close the emergency exit. The fire escape door can be closed again by this fireproof sheet door, and the fireproof sheet door can be securely held at the closed position.

Therefore, in the event of a fire, it is possible to easily escape from the emergency exit, perform rescue activities, etc., and after passing through the emergency exit, quickly close the emergency exit with a fireproof sheet door. It is possible to reliably prevent the smoke and the like from flowing out of the shielded portion by the fire-resistant sheet member, and to prevent the smoke and the like from spreading and spreading.

According to the second aspect of the present invention, in addition to the effect of the first aspect, when the emergency exit is closed by the fireproof sheet door, one side edge of the fireproof sheet door in the width direction has an emergency margin. One side edge of the escape exit is overlapped from one side of the fireproof sheet body, and the other side edge of the fireproof sheet door in the width direction has another side edge of the fire escape sheet body on the other side edge of the emergency exit. When the emergency exit is closed by the fire-resistant sheet door, the airtightness of the emergency exit can be secured,
With this fireproof sheet door, it is possible to reliably prevent smoke and the like from flowing out of the emergency exit, and also to surely prevent diffusion and spread of smoke and the like from the emergency exit.

According to the third aspect of the present invention, in addition to the effect of the first aspect, when the emergency exit is closed by the fireproof sheet door, the upper end of the fireproof sheet door is closed by the closing piece with the fireproof rail. The gap between the lower end of the fireproof sheet door and the lower end of the fireproof bar can be ensured, so that the upper end of the fireproof seat door can be securely closed. It is possible to prevent smoke and the like from flowing out from between the lower end portion of the crosspiece member, and it is possible to surely prevent the smoke and the like from spreading and spreading from between them.

According to the invention of claim 4, in addition to the effect of the invention of claim 1, the fire-resistant sheet door is opened and rotated about the support shaft in the escape direction. Since the sheet holding frame having the support shaft provided at the upper end portion, the fireproof sheet door can be smoothly opened and rotated about the support shaft in the escape direction with the sheet holding frame, and the upper end of the fireproof sheet door can be opened. Can be reliably prevented from being distorted and impairing the opening rotation of the fireproof sheet door. Further, when the emergency exit is closed by the fire-resistant sheet door, the closing piece provided on the sheet holding frame body can reliably close the gap between the upper end of the fire-resistant sheet door and the lower end of the cross-bar member during fire resistance.

According to the fifth aspect of the invention, in addition to the effect of the first aspect, the fireproof sheet door can be reliably biased and held at the closed position where the emergency exit is always closed by the spring, and the emergency exit is opened. When the fireproof seat door is opened and rotated against the spring, it escapes from this emergency exit, and the fireproof seat door can be smoothly closed and rotated around the support shaft by the return force of the spring. In addition, the fire escape door can quickly block the emergency exit and reliably prevent the outflow of smoke and the like.

According to the invention of claim 6, in addition to the effect of the invention of claim 1, when the emergency exit is closed by the fireproof sheet door, the cam surface inclined by the fixed cam due to its own weight of the fireproof sheet door. The tapered engagement of the inclined engagement surface of the movable cam allows the fireproof sheet door to be reliably held in a state where the emergency exit is closed.

Further, the fire-resistant sheet door can be smoothly opened and moved in the escape direction around the support shaft inserted into the shaft insertion hole of the fixed cam, and the movable cam fixed to the support shaft of the fire-resistant sheet door can be engaged. The refractory sheet door can be largely opened and movable so that the mating surface is pushed up and rotated by the inclined cam surface of the fixed cam so as to be able to escape.

After the escape from the emergency exit, the engagement surface of the movable cam of the fireproof sheet door is pivoted down along the inclined surface of the cam surface of the fixed cam due to the weight of the fireproof sheet door. The fireproof seat door can be automatically closed and rotated by the inclined cam surface of the fixed cam through the engagement surface of the movable cam.
When the emergency exit is closed by the fire-resistant sheet door, the inclined engagement surface of the movable cam is taperedly engaged with the inclined cam surface of the fixed cam by the weight of the fire-resistant sheet door, so that the fire-resistant sheet door is emergency closed. The outlet can be reliably kept closed.

[Brief description of the drawings]

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

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view showing a state in which the refractory sheet door is opened and rotated.

FIG. 4 is a cross-sectional view showing a state where the refractory sheet door is mounted.

FIG. 5 is a cross-sectional view showing a state in which the refractory sheet is attached.

FIG. 6 is an explanatory plan view showing a state in which the refractory sheet door is opened and rotated.

FIG. 7 is a perspective view of the same.

FIG. 8 is a cross-sectional view showing a state where a fireproof sheet door according to another embodiment is attached.

FIG. 9 is a side view of a fire-resistant sheet door according to still another embodiment in an attached state.

FIG. 10 is a side view showing a state in which the refractory sheet door is opened and rotated.

FIG. 11 is an enlarged side view of the cam mechanism.

FIG. 12 is an enlarged side view showing a state where the fireproof sheet door is opened and rotated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Shielding part 3 Insertion opening 9 Fireproof sheet 12 Fireproof bar 13 Floor surface 14 Weights 15 and 18 Both ends 24 Emergency exit 25 Support shaft 26 Fireproof seat door 28 Seat holding frame 29 1 Side end overlap allowance 30 Other side overlap allowance 38, 39 Closing piece 42 Door closing means 43 Spring 49 Fixed cam 50 Shaft insertion hole 51 Cam surface 52 Movable cam 53 Engagement surface

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁶ Identification code FI E06B 9/58 E06B 9/17 E 9/20 B

Claims (6)

[Claims] 1. A guide rail fixed to both sides of a shielded portion and opposed to each other and having an opening in a vertical direction, and both side ends in a width direction are inserted into the insertion openings of the guide rails on both sides. A fire-retardant fire-resistant sheet body which is provided so as to be able to be inserted and lifted up and down to shield the shielded part; and A flame-retardant weight body that is placed on the floor surface of the shielding part, wherein the refractory sheet body is provided at a substantially middle portion in the vertical direction of the refractory sheet body, A fire-resistant fire-resistant cross member in the width direction of the fire-resistant sheet body inserted into the insertion opening of each of the guide rails on both sides, and an emergency opening positioned between the fire-resistant fire bar member and the weight body. An escape exit, the emergency escape exit being rotatably supported by the fire-resistant crosspiece. A fire-resistant sheet door to be closed; and a fire-resistant sheet door provided on the cross-bar member during fire-proof, always holding the fire-resistant sheet door in a closed position for closing the emergency exit and opening the fire-resistant sheet door when the fire-resistant sheet door is pushed. And a rotatable door closing means. 2. A fire-resistant sheet door is rotatably supported by a fire-resistant cross member about a vertical support shaft, and one end in a width direction around the support shaft is connected to an emergency exit. A side edge is overlapped from one surface side of the refractory sheet body to the side edge, and the other side edge in the width direction centering on the support shaft is provided on the other side edge of the emergency escape exit. The fire-resistant screen device according to claim 1, wherein an emergency exit is closed as a margin for overlapping the other side from the surface side. 3. The fire-resistant sheet door has a closing piece at an upper end for closing between an upper end of the fire-resistant sheet door and a lower end of the crosspiece during fire resistance when the emergency exit is closed. The refractory screen device according to claim 1, wherein 4. The refractory sheet door has a sheet holding frame at an upper end portion in a width direction of the refractory sheet door, and the sheet holding frame is positioned at an intermediate portion of the sheet holding frame and is upward. A vertical support shaft integrally protruded toward and rotatably supported by the fire-resistant crosspiece, and a lower end portion of the fire-resistant crosspiece integrally protruded upward along the sheet holding frame. 2. A refractory screen device according to claim 1, further comprising: a closing piece that closes between the two. 5. A door closing means, comprising: a spring having one end fixed to the cross-bar member during fire resistance and the other end fixed to the fire-resistant sheet door, and biasing and holding the fire-resistant sheet door to a closed position for always closing the emergency exit. The refractory screen device according to claim 1, comprising: 6. A door closing means comprising: a fixed cam having a shaft insertion hole fixed in the crosspiece member during fire resistance and penetrating in a vertical direction and a cam surface inclined at an upper end, and integrally projecting from an upper end of the fireproof seat door. A vertical support shaft rotatably inserted into a shaft insertion hole of the fixed cam; and an emergency escaper fixed to the upper end of the support shaft and engaged with the cam surface of the fixed cam when the emergency escape exit is closed. The fireproof screen device according to claim 1, further comprising: a movable cam having a lower end formed with an engagement surface pushed up by a cam surface of the fixed cam when the outlet is opened.