JP2005155200A - Sealing material for screen shutter and screen shutter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing material for surely sealing a gap between a guide rail and a screen, etc. of a screen shutter device upon a fire, and to provide the screen shutter device using the sealing material. <P>SOLUTION: The sealing materials 25, 35, 36 are used for the screen shutter device S opening or closing an opening part by moving the screen up and down, and are placed at a gap between the screen 1 and the other members being the guide rails 2, 2 guiding the movement of the screen, and/or between the screen 1 and the other members being lintels 32, 33 of an entrance slit 31 of a casing 3. The sealing materials 25, 35, 36 are made of a thermally expansible material being a resin composition containing 20 to 200 pts.wt. of a total of a phosphorus composition and a neutralized thermally expansible graphite, and 50 to 500 pts.wt. of an inorganic filler to 100 pts.wt. of resin containing a butyl rubber as a main component. The sealing materials are preferably formed to be long and thin plates. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a screen shutter device for partitioning an interior space of a building by a screen curtain having incombustibility or fire resistance, and in particular, a gap between a screen curtain for fire prevention and smoke prevention that prevents the spread of fire and diffusion of smoke and a guide rail. The present invention relates to a screen shutter sealing material that seals the screen and a screen shutter device provided with the sealing material.

Conventionally, as a sealing material that can be used for this type of screen shutter device or the like, Patent Document 1 uses a water-resistant foam-type fireproof composition, and affixing a sheet or fixing a gasket to the upper, lower, left, and right gaps of the fire door The use method which can prevent the penetration of the flame and smoke at the time of a fire is described by setting by etc. This foam-type fireproofing composition contains a thermoplastic resin, a polyphosphoric acid compound, and a plasticizer.
JP 2001-341355 A

  By the way, although the fire door of the said structure has the description that flame and smoke penetration at the time of a fire can be prevented by setting foaming type fireproof composition in the gap part of the upper and lower, right and left of a fire door, other There is no description of installation or specific setting by attaching a sheet to the opening, fixing the gasket, or the like. For this reason, when sheet sticking or gasket fixing is insufficient, there is a possibility that flame or smoke may penetrate from this portion. In addition, there was concern about the fire resistance performance of the composition itself, and there was a risk of flame and smoke penetration in a large fire.

  The present invention has been made in view of such problems, and its object is to provide a sealing effect in the event of a fire when used in a screen shutter device that moves a screen curtain up and down along a guide rail. Needless to say, it is an object of the present invention to provide a sealing material for a screen shutter that can reliably fill a gap following the deformation of a guide rail due to heating and can surely prevent entry of flames and smoke. Moreover, it is providing the screen shutter apparatus which installed this sealing material and was excellent in fireproof performance.

  In order to achieve the above object, the screen shutter sealing material according to the present invention is installed in the gap between the screen curtain and other members of the screen shutter device that opens or closes the opening by moving the screen curtain up and down. It is characterized by being comprised with a thermally expansible material. Other members include a guide rail that guides the vertical movement of the screen curtain, an entrance slit of a case portion that stores the screen curtain, and the like. When the sealing material is installed in the gap between the screen curtain and the guide rail, it is preferably installed along the surface of the screen curtain or at the back of the screen curtain. Further, when installing in the entrance slit portion, it is preferable to install in the vicinity of both sides of the screen curtain. If the sealing material is formed from a long thin plate piece, it can be easily installed and the free end of the thin plate piece can be brought into elastic contact with the screen curtain.

The heat-expandable material contains 20 to 200 parts by weight of the total amount of the phosphorus compound and the neutralized heat-expandable graphite, and an inorganic filler with respect to 100 parts by weight of the resin component mainly composed of butyl rubber. A resin composition containing 50 to 500 parts by weight is preferable.
In addition, the thermally expandable material includes 50 to 150 parts by weight of a phosphorus compound, 15 to 40 parts by weight of neutralized thermally expandable graphite, and 30 inorganic fillers with respect to 100 parts by weight of an epoxy resin. It is preferable that it is a resin composition containing ˜500 parts by weight, and the total amount of the phosphorus compound, neutralized thermally expandable graphite and inorganic filler is 200 to 600 parts by weight.

  The screen shutter sealing material of the present invention configured as described above is thermally expanded in the event of a fire, and / or the gap between the screen curtain and the guide rail, and / or the entrance slit of the case portion housing the screen curtain. It is possible to reliably close the gap, and it is possible to prevent flame and smoke from entering the space partitioned by the screen shutter device. That is, the thermally expandable material can be thermally expanded by heating to form a fireproof heat insulating layer, has a stable volume expansion coefficient after being heated under a predetermined heating condition, and is used as a smoke shielding material and a flameproof material. It functions reliably and reliably prevents smoke and flames from entering.

  Also, the screen shutter device according to the present invention provides the above-described screen shutter sealing material with the gap between the screen curtain and another member as a guide rail, and / or the entrance of the case portion which is the screen curtain and another member. It is characterized by being installed in the gap with the slit. Preferably, the sealing material is formed of a long thin plate piece, one side of the thin plate piece is fixed to the guide rail and / or the entrance slit, and the other side is elastically contacted with the screen curtain.

  With this configuration, the sealing material made of a thermally expandable material is thermally expanded in the event of a fire, and the gap between the screen curtain and the guide rail is surely closed, and the screen curtain and the entrance slit of the case portion that accommodates the screen curtain Therefore, it is possible to prevent a flame or smoke from entering an adjacent section. In addition, the load on the vertical movement of the screen curtain can be reduced by only elastically contacting one side of the thin plate piece.

  Furthermore, as another preferable aspect of the screen shutter device according to the present invention, the screen shutter device further includes a drive device that moves the screen curtain up and down, and a fire detection unit, and is driven by the output of the fire detection unit. The screen curtain is lowered by the device. According to this configuration, when a fire occurs, the fire detection means is actuated, the screen curtain is lowered by the driving device to close the opening, and the sealing material is disposed between the screen curtain and the guide rail, and between the guide rail and the case section. Closes the gap with the entrance slit to prevent smoke and flames from entering.

  In the screen shutter device, it is preferable that the fire detecting means is set so as to detect a fire before the sealing material is thermally expanded, and the screen curtain is lowered by the driving device. When the sealing material thermally expands, the gap between the screen curtain and the guide rail is blocked to prevent the screen curtain from descending.However, according to this configuration, after the screen curtain descends, the sealing material thermally expands, so the screen curtain The gap can be sealed in a state of being reliably lowered.

  According to the present invention, the gap between the screen curtain and the guide rail, and the gap between the screen curtain and the entrance slit of the case portion that accommodates the screen curtain are reliably ensured by the thermally expandable material that is heated and expands in the event of a fire. It can be blocked and flame and smoke can be prevented from entering the space defined by the screen shutter device. In addition, the screen curtain can be automatically lowered in the event of a fire, so that flames and smoke can be reliably prevented from entering the partitioned space.

  Hereinafter, an embodiment of a screen shutter device according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a main part in which a part of the screen shutter device according to the present embodiment is omitted, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is a guide rail portion along the line AA in FIG. FIG. 4 is a perspective view of a principal part showing an installation structure of a sealing material.

There are fire prevention facilities such as fire barriers and fire shutters to block flames and smoke, and evacuation passages such as fire doors that allow people to evacuate, in preparation for fires. Planned deployment. As a new fire protection equipment to replace these fire barriers and fire shutters, a screen shutter device for fire prevention and smoke prevention that uses a nonflammable or fireproof screen curtain to block flames and smoke is installed. The present invention relates to a screen shutter device as described above, and a sealing material that is used for the screen shutter device to prevent the entry of smoke and flame.

  1-4, a screen shutter device (hereinafter referred to as a shutter device) S according to the present embodiment is installed inside a building, and moves up and down along guide rails 2 and 2 that are suspended from a screen curtain 1 on a wall surface W. To partition the space. The shutter device S includes a case portion 3 that accommodates the screen curtain 1 at an upper portion, and a driving device 4 that moves the screen curtain 1 up and down is installed in the case portion.

  The driving device 4 feeds the screen curtain 1 out of the entrance slit 31 of the case portion 3 from the winding shaft 42 that is rotated by a motor 41 via a belt, a chain, etc., and runs along the guide rails 2 and 2 to the floor surface. It can be lowered to F to close the opening surrounded by the two guide rails and the case part, and the screen curtain 1 can be raised and opened. The plurality of winding shafts 42 are supported in the case portion 3 so as to be horizontally rotatable, and are interlocked by a connecting mechanism 44 at an intermediate bearing portion 43 in the case portion. Thus, the drive device 4 is installed behind the ceiling so as to store the screen curtain 1 in the upper case portion 3.

  As described above, the shutter device S can lower the screen curtain 1 to partition the indoor space of the building, and can block the flame and smoke. The screen curtain 1 is made of a non-combustible or fire-resistant cloth material such as a glass fiber woven cloth or silica cloth, and has a function of blocking flame and smoke. The screen curtain 1 is connected to a plurality of curtain pieces 11 having a predetermined width, which is rich in incombustibility or fire resistance, and has a wide width in accordance with the width of the opening between the two guide rails 2 and 2. Is formed. That is, the screen curtain 1 is constructed by connecting a plurality of curtain pieces 11, and a narrow backing curtain piece 12 is superimposed on the connecting portion of the curtain pieces 11, and is sewn and can be wound up in this embodiment. Flexibility is given.

  A seat plate 5 is fixed to the lower end of the screen curtain 1 over the entire width, and the lower end of the screen curtain 1 is given rigidity to prevent it from being bent. The seat plate 5 includes two seat plate surface materials 51 formed by bending a metal plate material and, if necessary, a heavy core material 52 and a weight material, which are overlapped and fixed with screws 53. As a result, the screen curtain 1 unraveled by the driving device 4 is lowered, and after being lowered, the screen curtain 1 is prevented from being lifted by being struck by internal pressure or airflow that increases on the fire occurrence side. The seat plate 5 is preferably fixed in a state in which the screen curtain 1 is wound around a core member 52 positioned in the middle, sandwiched between seat plate surface materials 51 from both sides, and penetrated by screws 53. It is preferable that the concave portion below the seat plate 5 is difficult to move when engaged with the protrusion Fa that protrudes from the floor surface F and is fixed.

  The screen curtain 1 is provided with an emergency exit 13 for evacuation in one of the curtain pieces 11 so that even after the screen curtain is lowered and the opening is closed, a person can pass through the emergency exit and evacuate. Yes. An emergency exit pattern 13a is formed on the emergency exit 13 by printing or the like. The emergency exit 13 has a vertical cut 14 formed in one curtain piece, the curtain piece on one side (right side) of the cut is fixed by the seat plate 5, and the other side (left side) of the cut is a door piece piece. As described above, an opening is formed by bending along the inclined side 13b. Therefore, the door seat plate 5a is fixed to the lower end of the door curtain piece on the curving side, and the door seat plate is connected to the entire seat plate 5 by the hinge 5b on the extension of the inclined side 13b. It is configured to be able to swing obliquely. In addition, it is preferable to affix the back cover piece 13c for reinforcement to the back side of the cut 14 at the emergency exit, and the entrance curtain of the emergency exit 13 is brought into contact with the back cover piece 13c so as to reduce the entry of smoke or the like. Can do.

  The guide rails 2 and 2 for guiding the vertical movement of the screen curtain 1 constitute other members on the fixed side with respect to the movable screen curtain 1 and are formed by bending a metal plate material to have a substantially rectangular cross-sectional shape in the vertical direction. The two guide rails are suspended from the wall surfaces W, W, etc. in a parallel state, and the respective guide grooves are formed to face each other. The width of the guide groove 21 is formed larger than the thickness of the screen curtain 1, and the screen curtain 1 is configured to be able to move up and down in the guide groove 21 of the guide rail 2 with little resistance. If this gap is formed relatively large, the resistance during vertical movement can be reduced, but smoke and flames are more likely to enter when a fire occurs. Although not shown, if a reinforcing sheet such as a Teflon (registered trademark) sheet is attached to the portion of the screen curtain 1 to be inserted into the guide groove 21 from both sides, resistance during vertical movement can be reduced and durability can be reduced. It can be improved.

  As shown in the sectional view, the guide rail 2 is configured by combining two members, a member 22 on the outdoor space B side and a member 23 on the indoor space C side, and the two members are fixed with screws or the like not shown. . Each member has outer peripheral surfaces 22a, 23a located on the outer side, opposing surfaces 22b, 23b bent inward at right angles from one end of the outer peripheral surface, and bent inward at right angles from the opposing surfaces. Sliding surfaces 22c and 23c that are opposed to each other to form a slit, and fixed surfaces 22d and 23d that are bent at right angles from the other end of the outer peripheral surface, and have a substantially U-shaped configuration part. Has a cross-section.

  Both ends of the screen curtain 1 are inserted into the guide grooves 21 of the guide rail 2, and as described above, in order to reduce the resistance to vertical movement, a gap is opened without contact. In the illustrated example, the screen curtain 1 has a gap formed on both the sliding surface 22c on the outdoor space B side of the guide groove 21 and the sliding surface 23c on the indoor space C side, A gap is also formed between the inner surface of the guide groove 21.

  In the present embodiment, the sealing material 25 is installed in the gap between the sliding surface 22 c on the outdoor space B side of the guide groove 21 and the screen curtain 1. The sealing material 25 is formed of a thin plate of a thermally expandable material formed in a thin plate shape having a thickness of about 0.5 to several mm, a width of about several cm, and a length of several meters. The metal plate material 26 and the L-shaped metal plate material 27 are screwed in a state where one side of the sealing material is sandwiched. As a result, the sealing material 25 is fixed in a cantilever state so that one side along the longitudinal direction is fixed and the other side elastically contacts the surface of the screen curtain 1. In FIG. 3, the sealing material 25 is installed so as to bend toward the outside, but may be curved toward the inside.

  In the present embodiment, the sealing materials 35 and 36 are also installed in the gap between the entrance slit 31 of the case portion 3 that houses the screen curtain 1 and the screen curtain 1. The entrance slit 31 constitutes another member on the fixed side with respect to the moving screen curtain 1. The lintels 32 and 33 are supported in a horizontal state on the outdoor side surface and the indoor side surface of the upper portion of the guide rail 2, and the left and right ends of the lintel and the upper portion of the guide rail are fixed. The lintels 32 and 33 are made of extruded aluminum or sheet metal. A ceiling board R made of a refractory material is engaged and fixed to the horizontal ribs at the lower ends of the lintels 32 and 33. A horizontal beam-shaped lintel reinforcement 34 is fixed to the indoor surface of the lintel 33. Since the lintel reinforcement 34 is supported by the span between the wide guide rails 2 and 2, a square steel material having high strength is preferable. Note that the lintel and the lintel reinforcement may be formed of C steel or L steel.

The entrance slit 31 of the case portion 3 that houses the screen curtain 1 is formed by the interval between the two lintels 32 and 33, the gap between the surface of the screen curtain 1 on the outdoor space B side and the lintel 32, the screen curtain Sealing materials 35 and 36 are installed in the gap between the surface of the one indoor space C and the lintel 33. The sealing material may be fixed to the lintel by any method, but it is preferable that one side in the longitudinal direction of the sealing material is fixed to a metal plate and the metal plate is screwed to the lintel. Further, it is also preferable to fix one side of the sealing material in the longitudinal direction by sandwiching it with a metal plate material. The sealing materials 35 and 36 are fixed at one side to an entrance slit such as a lintel and the other side is curved and elastically contacted with the screen curtain 1. For this reason, although the sealing materials 35 and 36 are in contact with the screen curtain 1, the resistance when the screen curtain 1 moves up and down is reduced.

  A sealing material 25 installed in the gap between the screen curtain 1 and the guide rails 2 and 2 and a sealing material 35 installed in the lintels 32 and 33 constituting the entrance slit 31 of the screen curtain 1 and the case portion 3. , 36 functions as a smoke barrier to prevent smoke from entering during a fire, and prevents flame from entering, and is made of a thermally expandable material. The heat-expandable material is 20 to 200 parts by weight of the total amount of the phosphorus compound and neutralized heat-expandable graphite, and 50 to 50 parts by weight of the inorganic filler with respect to 100 parts by weight of the resin component mainly composed of butyl rubber. It is formed from a resin composition containing 500 parts by weight.

  As another example of the thermally expandable material, 50 to 150 parts by weight of phosphorus compound, 15 to 40 parts by weight of neutralized thermally expandable graphite, and inorganic filling with respect to 100 parts by weight of epoxy resin 30 to 500 parts by weight of the agent may be used, and the phosphorus compound, the neutralized heat-expandable graphite and the inorganic filler may be formed from a resin composition having a total amount of 200 to 600 parts by weight. . The above-mentioned sealing material formed from a heat-expandable material expands to about 5 to 50 times the volume when heated to form a refractory heat insulation layer, and fills the gap between the screen curtain 1 and the guide rails 2 and 2 Thus, the magnification is constant and the entry of smoke or flame is surely prevented.

  As shown in FIG. 5, the screen shutter device S includes an automatic opening / closing device 6 that automatically closes in the event of a fire. This automatic switchgear is provided with a fire detector 61 such as a temperature sensor or a smoke sensor. The signal from the fire detector 61 supplies electric power from the power source 62 to the motor 41 of the drive unit 4 to operate it. The shaft 42 is rotated to lower the screen curtain 1, and the indoor space is partitioned to prevent smoke and flame from entering the adjacent space. The operating temperature of the fire detector 61 is set to be lower than the thermal expansion temperature of the sealing materials 25, 35 and 36 made of a thermally expandable material, and the fire detector 61 is activated before the sealing material is thermally expanded. It is set to operate and lower the screen curtain 1.

  The operation of the screen shutter device S of the present embodiment configured as described above will be described below. In the shutter device S, the screen curtain 1 is usually raised and stored in the case part 3, and the opening part surrounded by the guide rails 2 and 2 and the lintels 32 and 33 is opened. It is in a free state. In this state, when a fire occurs, the fire detector 61 detects heat and smoke and rotates the motor 41, and the rotation of the motor is linked to the plurality of winding shafts 42 by the coupling mechanism 44 of the intermediate bearing portion 43. The screen curtain 1 wound around the take-up shaft 42 is unwound, and the lower end seat plate 5 functions as a weight, and the screen curtain 1 descends along the guide rails 2 and 2 to close the opening. Then, even if the seat plate 5 engages with the protrusion Fa on the floor surface F and the screen curtain 1 is beaten by a blast or the like, it is held in a state in which it is difficult to move.

  When the opening is closed with the screen curtain 1 lowered, a person can open and exit the emergency exit 13. The emergency exit 13 is configured to open when the door piece is pushed from the indoor space C side to the outdoor space B side, and the door seat plate 5a swings from the seat plate 5 via the hinge 5b when pushed. A part of the screen curtain 1 is opened by curving the door curtain piece along the inclined side 13b. The accused person can escape from the opening. After the escape, the door curtain is returned to its original state by the weight of the door seat plate 5a, and the opening is closed to block smoke and flame.

When the screen curtain 1 is lowered and the opening is closed and the temperature rises due to a fire, the sealing materials 25, 35, and 36 made of a thermally expandable material thermally expand to form a fireproof heat insulating layer, And the gap between the guide rails 2 and 2 and the screen curtain 1 is closed, and the gap between the screen curtain 1 and the lintels 32 and 33 constituting the entrance slit 31 of the case portion 3 is also closed. It is possible to reliably prevent entry. For this reason, it is possible to effectively prevent the spread of fire and to prevent the smoke from being filled when accused.

  When a fire occurs, the gap between the guide rails 2 and 2 and the screen curtain 1 and the gap between the lintels 32 and 33 of the entrance slit 31 and the screen curtain 1 are filled with a thermally expanded refractory heat insulating material. Since the curtain 1 is in a state where it cannot be lifted, it is necessary to remove the refractory heat insulating material in order to return. Then, after removing the refractory heat insulating material, a new sealing material is installed in the gap between the guide rails 2 and 2 and the screen curtain 1 and in the gap between the entrance slit 31 and the screen curtain 1.

(Example 1)
An epoxy resin (“E807” manufactured by Yuka Shell Epoxy Co., Ltd.) 40 parts by weight and a diamine-based curing agent (“EKFL052” manufactured by Yuka Shell Epoxy Co., Ltd.) 60 parts by weight is used as an epoxy resin content of 100 parts by weight. 100 parts by weight of "Exolit AP422" manufactured by Clariant, 50 parts by weight of neutralized thermally expandable graphite ("Frame Cut GREP-EG" manufactured by Tosoh Corporation), and aluminum hydroxide ("Hijilite H" manufactured by Showa Denko KK) -31 ") 50 parts by weight, a resin composition containing 100 parts by weight of calcium carbonate (" BF300 "manufactured by Bihoku Flour & Chemical Co., Ltd.) is kneaded using a roll, and then thermoset in a state where glass cloth is impregnated by pressing. (150 degreeC, 10 minutes) was made, and the sealing material which is a long thin plate piece of thickness 1.5mm and width 40mm was produced.

(Example 2)
Main component of butyl rubber is 40 parts by weight of butyl rubber (“Butyl rubber 065” manufactured by Exxon Chemical Co., Ltd.), 50 parts by weight of polybutene (“Polybutene 100R” manufactured by Idemitsu Petrochemical Co., Ltd.) and 10 parts by weight of petroleum resin (“Escollets 5320” manufactured by Tonex Co., Ltd.) And 100 parts by weight of the resin, 45 parts by weight of ammonium polyphosphate (“Exolit AP422” manufactured by Clariant), and 30 parts by weight of neutralized heat-expandable graphite (“Frame Cut GREP-EG” manufactured by Tosoh Corporation) And a resin composition containing 200 parts by weight of aluminum hydroxide (“Hijilite H-31” manufactured by Showa Denko KK) were kneaded using a roll, and thereafter a sheet-like material having a thickness of 1.0 mm was produced by pressing. . This sheet was affixed to silicone rubber having a thickness of 1.0 mm and a width of 40 mm to produce a sealing material that is a long thin piece.
(Comparative example)
Silicone rubber having a thickness of 2.0 mm and a width of 40 mm was used as a sealing material.

(Evaluation)
Using the sealing materials of Examples 1 and 2 and the sealing material of the comparative example, a 1 m × 1 m screen shutter device was prepared and attached, and a fire resistance test was conducted for 1 hour in accordance with ISO 834 heating conditions. In the screen shutter device to which the sealing materials of Examples 1 and 2 were attached, no flame was ejected to the back surface and no penetration into the furnace was confirmed. On the other hand, when the screen shutter device using the sealing material of the comparative example was subjected to the same test, penetration from the deformed portion of the guide rail into the furnace was confirmed.

  As described above, when the sealing materials of the first and second embodiments are installed in the gap between the screen curtain 1 and the guide rails 2 and 2 and installed in the gap between the screen curtain 1 and the entrance slit 31 of the case portion 3. Since the sealing material is thermally expanded in the event of a fire and the gap is sealed with the fireproof heat insulating layer, it is possible to reliably prevent smoke and flames from entering the space partitioned by the screen shutter device.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention described in the claims. Design changes can be made. For example, any of a smoke detector and a heat detector can be used as the fire detecting means constituting the automatic opening / closing device. Although the sealing material installed on the guide rail has been shown as being installed only on one side that constitutes the guide groove, it can be installed on both sides. Further, it may be installed in the gap between the back surface of the guide rail and the edge of the screen curtain.

  As the entrance slit of the case part that houses the screen curtain, the gap between the two lintels located below it is configured to fix the sealing material to each of the lintels. An entrance slit through which the screen curtain enters and exits may be directly formed, and the sealing material may be fixed to the entrance slit of the metal plate material. In short, any structure may be used as long as smoke or flame enters the case portion during a fire and does not enter the other space through the case portion. Furthermore, although the seat plate at the lower end of the screen curtain is configured to engage with the protrusion on the floor surface, the protrusion is not necessarily required.

  For example, a band-shaped member made of the above-described thermally expandable material can be installed in the lower part of the screen shutter device, for example, the lower surface of the seat plate portion and / or the protrusion on the floor surface. If a member made of a heat-expandable material is installed at this position, even if a screen curtain is deformed due to wind pressure during a fire and a gap is generated between the seat plate and the floor, Since smoke can be blocked from entering, it is preferable to prevent the generation of gaps on all the upper and lower and left and right surfaces of the shutter device.

The principal part front view which abbreviate | omitted a part of one Embodiment of the screen shutter apparatus which concerns on this invention. The longitudinal cross-sectional view of the screen shutter apparatus shown in FIG. FIG. 3 is an essential part cross-sectional view of a guide rail portion taken along line AA in FIG. 2. The principal part perspective view which shows the installation structure of a sealing material. The block diagram which shows an automatic opening / closing apparatus.

Explanation of symbols

  S: Screen shutter device, 1: Screen curtain, 2, 2: Guide rail, 21: Guide groove, 25: Sealing material, 3: Case part, 31: Entrance slit, 32, 33: Pillar, 35, 36: Sealing material, 4: drive device, 5: seat plate, 6: automatic opening / closing device, 61: fire detector

Claims (8)

  A sealing material installed in a gap between the screen curtain and another member of a screen shutter device that opens or closes an opening by moving the screen curtain up and down, and the sealing material is a thermally expandable material A sealing material for a screen shutter, comprising:   The sealing material for a screen shutter according to claim 1, wherein the sealing material is formed from a long thin plate piece.   The heat-expandable material contains 20 to 200 parts by weight of the total amount of phosphorus compound and neutralized heat-expandable graphite, and 50 inorganic fillers with respect to 100 parts by weight of the resin component mainly composed of butyl rubber. The sealing composition for a screen shutter according to claim 1, which is a resin composition containing ˜500 parts by weight.   The thermally expandable material is 50 to 150 parts by weight of a phosphorus compound, 15 to 40 parts by weight of neutralized thermally expandable graphite, and 30 to 500 parts by weight of an inorganic filler with respect to 100 parts by weight of an epoxy resin. 3. The screen shutter according to claim 1, wherein the screen shutter is a resin composition containing 200 parts by weight of a phosphorus compound, neutralized thermally expandable graphite, and an inorganic filler. Sealing material.   5. The screen shutter sealing material according to claim 1, wherein a gap between the screen curtain and the guide rail which is the other member and / or a case portion which is the screen curtain and the other member. A screen shutter device, which is installed in a gap with the entrance slit of the screen.   6. The sealant according to claim 5, wherein the sealing material is formed of a long thin plate piece, one side of the thin plate piece is fixed to the guide rail and / or the entrance slit, and the other side is in elastic contact with the screen curtain. The screen shutter device described.   The screen according to claim 5 or 6, further comprising a drive device that moves the screen curtain up and down, and a fire detection means, wherein the drive device lowers the screen curtain with an output of the fire detection means. Shutter device.   The screen shutter device according to claim 7, wherein the fire detection unit is set to detect a fire before the sealing material is thermally expanded, and the screen curtain is lowered by the driving device.

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