JP6401500B2 - shutter - Google Patents

Description

The present invention relates to a shutter provided on the upper portion or the like of the openings provided with windows and doors of a building.

  Conventionally, shutters provided at the upper part of openings such as windows and doors in buildings have used many resin parts inside the shaft around which slat curtains can be wound and motors. These resins are used in the event of a fire. Since the manufactured parts may burn or generate flammable gas, a heating foam material or the like is installed in the shutter or the shaft in order to ensure fire prevention performance.

  For example, in the shutter described in Patent Document 1, a winding pipe that is motor-driven as a shutter is provided in a shutter case provided at the upper part of a sliding window of a building, and a plurality of slats are connected to the winding pipe. The upper end portion of the shutter face material is fixed. Then, the shutter face material is taken up or drawn out by the take-up pipe, and ascends or descends along the guide rail, thereby opening and closing the outer opening of the sliding window.

  This shutter has a surplus winding portion left on the winding pipe in a state where the shutter face material is lowered to the lower end, and has a configuration in which a heating foam material is attached to the inner surface of the surplus winding portion. ing. In the event of a fire, the space formed on the shaft member side protruding to one end side of the take-up pipe is closed by thermal expansion of the heating foam material on the inner surface of the excess winding portion. Therefore, even if a resin part or the like inside the take-up pipe is melted by heat and flammable gas is generated, it is prevented from flowing out into the shutter case by the heated foam material.

  Moreover, in the conventional shutter, in addition to the inner surface of the surplus winding portion of the shutter face material, in order to prevent leakage of combustible gas and flame at the time of fire, the receiving portion of the shaft member of the winding pipe provided on the side surface of the shutter case Many heating foam materials are also disposed at both ends of the winding pipe and the shaft member and in the vicinity of the outside thereof.

JP 2013-7189 A

  However, there is a possibility that flammable gas may flow out from both ends of the winding pipe and the shaft member. Therefore, simply providing a heating foam material on the inner surface of the surplus winding portion has resulted in insufficient gas sealing during a fire. . In addition, the electric shutter is designed to reduce the relative rotational sliding resistance between the drum that rotates integrally with the take-up pipe and the shaft member, or between the motor crown and the motor shaft. In addition, a resin such as POM (polyacetal) is disposed on the inner surface of the crown or the crown. However, a combustible gas is generated during combustion and a gap is generated because it melts and flows out, and the gas flows out from the gap. was there.

  In addition to the inner surface of the surplus winding part, the conventional shutter has many heating foams on the winding pipe in the shutter case, both ends of the shaft member, etc. as described above for fire prevention and gas leakage prevention. Since it is necessary to dispose, there are disadvantages that the cost is high and the number of assembly steps at the time of assembling the shutter is large and it takes time to assemble. Moreover, even if many heating foam materials are provided, it is difficult to completely contain the combustible gas.

Shutter The present invention was made in view of such problems, that while cost reduction by reducing the heat-foamable material, and to improve the fire performance to prevent leakage of the combustible gas during fire The purpose is to provide.

The shutter according to the present invention is a shutter provided so that the shutter surface can be advanced and retracted so that the shaft can be rolled up and fed out, and a spacer is fixed to the outer peripheral surface of the shaft through a hole in the shutter surface, and the spacer is nonflammable. A shaft member that rotatably supports the shaft, a drum that passes through the shaft member and rotates integrally with the shaft, and a shaft member and a drum are formed in the shaft. And a drive motor that rotatably supports the shaft at a position spaced apart from the drum in the shaft, and a drive motor that is rotatably disposed in the shaft. And a nonflammable resin material disposed between the drive motor and the crown. A second sealing member is provided Ranaru, said drive motor being located in the space between said drum and said crown in said shaft, said first sealing member is between the shaft member and the drum wherein together seals the gap between the second sealing member is sealed the gap between said driving motor crown, said first sealing member and said second seal in the event of a fire When the stopping material is melted, the gap is filled with the melt .

   According to the present invention, since the spacer is made of a non-combustible resin material, it does not easily burn, and even if the spacer of the non-combustible resin material is burned by high-temperature heat, the melt remains in that position. The hole of the shaft for fixing to the shaft is closed by the nonflammable resin material. In addition, the non-combustible resin material between the shaft end bearing and the shaft member reduces the sliding resistance during relative rotation, suppresses the generation of abnormal noise, and does not easily burn in the event of a fire. Even if the incombustible resin material burns, the melt remains in the position and is sealed, so that it is possible to prevent a gap from being generated between the bearing and the shaft member. Therefore, it is possible to reliably prevent the combustible gas inside the shaft from flowing out.

Further, the incombustible resin material is PEEK.
Since the non-flammable resin material is PEEK, it has high heat resistance as a thermoplastic resin and does not burn easily in the event of a fire, so it is possible to prevent gaps and holes from being exposed, However, the molten material is restrained from flowing in and staying at the position, and no gap is generated and the hole of the shaft can be blocked, so that the combustible gas in the shaft can be prevented from flowing out.

  Further, according to the shutter of the present invention, since the nonflammable resin material is provided between the bearing and the shaft member at the end of the shaft, the nonflammable resin material can cause a gap between the bearing and the shaft member in the event of a fire. Even if the non-combustible member burns at a high temperature, the melt remains, so that the generation of a gap can be prevented, and the combustible gas can be reliably prevented from flowing out of the shaft.

It is a longitudinal cross-sectional view of the structure which attached the shutter by embodiment of this invention to the upper part of the window. It is a principal part disassembled perspective view of the shutter case of the shutter shown in FIG. It is a disassembled perspective view which shows a shaft, a spring set, and a drive unit. It is a principal part perspective view which shows the 1st drum and support shaft which are installed in the shaft of a spring set. FIG. 5 is a central sectional view of the first drum shown in FIG. 4. The 2nd winding diameter spacer attached to the outer peripheral surface of a shutter is shown, (a) is a side view, (b) is the sectional view on the AA line of the same figure (a). It is a figure which shows the drive unit incorporating a drive motor, (a) is a side view, (b) is a front view of a crown direction.

Hereinafter, a shutter according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the shutter 1 according to the present embodiment is, for example, an electric shutter, and a box-type shutter case 4 is attached to an upper portion of a building opening, for example, a rectangular frame 3 of a window 2. Yes. The frame 3 has an upper frame and a lower frame, and left and right vertical frames 5 fixed to the opening. A shaft 6 is rotatably mounted in the shutter case 4, and a slat curtain 9 in which, for example, steel slats 8 are connected in the vertical direction by the rotation of the shaft 6 can be wound up and fed out. A guide rail 5 a for guiding the raising and lowering of the slat 8 is provided on the outer side of the window 2 in the vertical frame 5 of the frame portion 3.

In FIG. 2, a cylindrical shaft 6 is supported at its both ends by bearings 4b provided on the side cover 4a of the shutter case 4, with a back cover 4c on the back, a front cover 4d on the front, and a slat curtain 9 on the bottom. A bottom surface cover 4e having an opening for advancing and retreating is formed.
Next, FIG. 3 shows the structure of the shaft 6. The shaft 6 is made of aluminum, for example, and a spring set 10 and a drive unit 11 including an electric motor M are provided in the shaft 6.

In the spring set 10, a first drum 13 and a second drum 14 are supported as bearings at a predetermined interval with respect to a support shaft 12, and a coiled spring is supported between the first and second drums 13 and 14. 15 is installed. One end of the spring 15 is connected to the second drum 14, and the other end is connected to the support shaft 12. Therefore, the urging force of the spring 15 can be increased or decreased by the rotation of the first and second drums 13 and 14.
With the spring set 10 mounted in the shaft 6, one first drum 13 is located at the end of the shaft 6, and the other second drum 14 is located in the center in the longitudinal direction.
The drive unit 11 includes an electric motor M formed in a substantially cylindrical shape within the shaft 6, and flange-shaped adapters 17 and crowns 18 provided at both ends thereof.

Further, on the outer peripheral surface of the shaft 6, as a winding diameter spacer for fixing the slat curtain 9, for example, a first winding diameter spacer 20, a second winding diameter spacer 21, and a third winding diameter spacer 22 having a C shape are provided. Is provided. Each winding diameter spacer has a winding correction function for adjusting the winding shape of the slat curtain 9 and suppressing fluctuations in the opening / closing force. As will be described later, the second winding diameter spacer 21 is formed of PEEK incombustible resin material. Further, the other winding diameter spacers 20 and 22 may be similarly formed of PEEK, or may be formed of other resins such as POM.
The first and second winding diameter spacers 20 and 21 are fastened together with the shaft 6 to the first and second drums 13 and 14 of the spring set 10 with screws 23. These screws 23 are respectively screwed into the screw holes 28a of the first and second drums 13 and 14 through the holes of the first and second winding diameter spacers 20 and 21 and the shaft 6 at opposing positions approximately 180 degrees apart, for example. It is fixed to the shaft 6.

Further, in the region of the drive unit 11, a pair of holes 6a, 6a are formed at substantially opposite positions on the outer peripheral surface of the shaft 6, and scissor nuts 25 having a substantially J-shaped cross section are respectively mounted in these holes 6a. Yes. Then, the other third winding diameter spacer 22 is fastened and fixed together with a screw 23 through a hole 6c of the shaft 6 with a screw 23, and is fastened together.
Then, the top slat 8 of the slat curtain 9 is connected to the first to third winding diameter spacers 20, 21, and 22, and the first to third winding diameter spacers 20, 21, and 22 are rotated by rotating the shaft 6 forward and backward. The slat curtains 9 can be stacked and rolled up or fed out in an orderly manner.

Next, the fire prevention structure of the shaft 6 attached in the shutter 1 will be described with reference to FIGS. First, the mounting structure of the first and second drums 13 and 14 and the support shaft 12 in the spring set 10 shown in FIG. 4 and FIG. 5 will be described. This will be explained as a representative.
4 and 5, the first drum 13 (second drum 14) includes a cylindrical main body 27 and a flange portion 28 formed at the center in the length direction, and an inner surface 27a of the cylindrical main body 27. The 1st sealing material 30 which consists of a sheet-like nonflammable resin material is attached to the perimeter. In addition, a pair of screw holes 28a for overlapping and fixing to the shaft 6 with screws 23 are formed on the outer peripheral surface of the flange portion 28, for example, at positions separated by 180 °. The support shaft 12 is fitted into the inner surface 27 a, and the first and second drums 13 and 14 can rotate integrally with the shaft 6 with respect to the support shaft 12.
The gap between the inner surface 27a of the first drum 13 and the support shaft 12 is slidably closed by the first sealing material 30 made of the incombustible resin material. In the cross-sectional view of the first drum 13 shown in FIG. 5, the inner surface 27 a of the cylindrical main body 27 is formed in a tapered shape in which the inner diameter gradually increases from the central portion toward both end portions. Although the inner surface is formed in a cylindrical shape, the inner surface 27a may be formed in a cylindrical shape without a taper.

  Here, for example, PEEK (polyether ether ketone) is used as the nonflammable resin material constituting the first sealing material 30. For example, PEEK has a melting point of about 334 ° C., has super heat resistance that can be continuously used at about 250 ° C., and is known to have high mechanical strength, toughness, and moldability. Conventionally, they have been used as engine parts, electric / electronic parts, and the like. However, as a result of research and experiment on PEEK, the present inventors have not been able to generate a flammable gas, which has not been known in the past, in addition to its super heat resistance, etc. The knowledge of the characteristic that it is hard to stay and flow out was obtained, and it was used as a new fire prevention part paying attention to this point.

By sealing the gap between the inner surface 27a of the first drum 13 and the support shaft 12 with the first sealing material 30 of a non-combustible resin material, it is difficult to burn in the event of a fire or the like, and no flammable gas is generated. Moreover, even if it burns, the molten material becomes sticky and stays between the inner surface 27a of the first drum 13 and the support shaft 12, so that the gap is filled and the combustible gas in the shaft 6 is maintained. Do not leak outside.
In contrast, POM (polyacetal), which is a resin material that has been used conventionally, has a low melting point of about 175 ° C. compared to PEEK according to the present embodiment, and burns off in the event of a fire or the like to form a gap. There is a drawback that the flammable gas inside easily flows out.

Next, FIG. 6 illustrates a fire prevention structure of the second winding diameter spacer 21 attached to the outer peripheral surface of the region of the second drum 14 on the center side in the longitudinal direction of the shaft 6 provided in the spring set 10. As shown in FIG. 3, the second winding diameter spacer 21 is formed in a substantially C shape using the PEEK of the first sealing material 30 described above as a material.
The second winding diameter spacer 21 is screwed into a screw hole 28a formed in the flange portion 28 of the drum 14 through a hole 6b of the shaft 6 with a screw 23 at a position opposed to 180 degrees. Moreover, since the screw 23 is screwed into the screw hole 28a of the drum 14 through the hole 6b of the shaft 6, the length of the hole 6b is formed longer than the screw hole 28a in consideration of misalignment or the like. Therefore, the gas in the shaft 6 easily leaks from the hole 6b during a fire or the like, but can be sealed by the second winding diameter spacer 21 made of a nonflammable resin material. Further, even if the second winding diameter spacer 21 is combusted at a high temperature, the melt 6 fills the hole 6b of the shaft 6, so that no gas leakage occurs.

Next, the fire prevention structure of the drive unit 11 accommodated in the other end side of the shaft 6 shown in FIG. 3 will be described with reference to FIGS. 3 and 7.
In the drive unit 11 shown in FIGS. 7A and 7B, a substantially cylindrical drive motor M housed in the shaft 6 is provided, and an adapter 17 connected to the output shaft of the drive motor M at one end thereof. Is rotatably arranged, and the outer peripheral surface of the adapter 17 is fixed to the shaft 6 by screws 23. Therefore, the spring set 10 rotates integrally with the first and second drums 13 and 14 by the rotation of the shaft 6.

A ring-shaped crown 18 is supported on the outer peripheral surface near the other end of the drive motor M so as to be rotatable with respect to the outer peripheral surface of the drive motor M. A fixed shaft portion 32 supported by a bearing portion 4 b provided on the side cover 4 a of the shutter case 4 is fixed to the drive motor M outside the crown 18. Between the inner surface 18a of the crown 18 and the outer peripheral surface of the drive motor M, the second sealing material 33 made of, for example, PEEK, which is made of the above-mentioned non-flammable resin material, is mounted in a substantially cylindrical shape to fill the gap and seal. The drive motor M can be slidably rotated with respect to the outer peripheral surface.
Therefore, the gas in the shaft 6 is likely to leak out between the crown 18 and the drive motor M during a fire or the like, but can be sealed with the second sealing material 33 made of a non-flammable resin material. Even if the temperature of the second sealing material 33 burns due to a high temperature, the melt fills the gap between the crown 18 and the drive motor M, so that no gas leakage occurs.

  The shutter 1 according to the present embodiment is configured as described above, and when the shaft 6 rotates integrally through the adapter 17 by driving the electric motor M, for example, the first to third winding diameter spacers 20, 21, 22 are used. The wound slat curtain 9 is fed out. At that time, the weight of the slat curtain 9 to be fed out and the winding force due to the urging force of the spring 15 of the spring set 10 are balanced at an arbitrary position. Further, even when the slat curtain 9 is wound around the shaft 6 by the reverse rotation of the electric motor M, the slat curtain 9 is balanced at an arbitrary position by reducing the winding force due to the weight of the slat curtain 9 and the urging force of the spring 15. Therefore, the opening / closing operation of the slat curtain 9 by the electric motor M is easily performed.

In addition, when a fire or the like occurs and the shutter 1 is exposed to a high temperature, the drive motor M and other resin parts provided in the shaft 6 of the shutter case 4 may burn to generate flammable gas. is there.
The first sealing member 30 provided between the inner surface 27a of the first drum 13 screwed to one end of the shaft 6 and the support shaft 12 is a gap at one end where the spring set 10 of the shaft 6 is incorporated. To prevent flammable gas from flowing out. And since the 1st sealing material 30 consists of nonflammable resin materials, such as PEEK, itself endures high heat and generation | occurrence | production of a combustible gas is suppressed. A similar behavior is performed in the second drum 14.

Further, at the other end of the shaft 6 in which the drive unit 11 is built, the second sealing material 33 provided between the inner surface 18 a and the support shaft 12 is a gap between the crown 18 screwed to the other end of the shaft 6. And slidably rotate integrally to suppress the outflow of combustible gas in the shaft 6 to the outside. And since the 2nd sealing material 33 consists of nonflammable resin materials, such as PEEK, itself withstands high heat and generation | occurrence | production of a combustible gas is suppressed.
Further, the second winding diameter spacer 21 is mounted on the outer peripheral side of the second drum 14 of the spring set 10 built in the longitudinal center of the shaft 6 so as to close the hole 6b of the shaft 6 with the screw 23. The combustible gas is prevented from flowing out through the hole 6b. Moreover, since the second winding diameter spacer 21 is made of a nonflammable resin material such as PEEK, the second winding spacer 21 can withstand high heat and suppress the generation of combustible gas.

When the shutter 1 is exposed to a further high temperature, the first sealing material 30 and the second sealing material 33 provided at both ends of the shaft 6 may burn, but in this case also, it is made of PEEK. Even if the first sealing material 30 and the second sealing material 33 which are non-combustible resin materials are melted, the melt remains in place, so the gap between the first and second drums 13 and 14 and the support shaft 12, A flammable gas can be contained by filling a gap between the crown 18 and the outer peripheral surface of the drive motor M.
Similarly, even if the second winding diameter spacer 21 burns and melts, the melt remains in place, so that the hole 6b of the shaft 6 is buried, and the combustible gas is similarly sealed in the shaft 6.

As described above, in the shutter 1 according to the present embodiment, the first and second drums 13 and 14 including both ends of the shaft 6 and the support shaft 12 and the gap between the crown 18 and the drive motor M are each made of PEEK. Sealed with a first sealing material 30 and a second sealing material 33 of non-combustible resin material, and further, the holes 6b of the fixing screw 23 of the second drum 14 built in the shaft 6 are made of non-combustible resin material made of PEEK. Since it has a structure closed by the second winding diameter spacer 21, even if the shutter 1 is exposed to a high temperature due to a fire or the like, the combustible gas generated from the resin such as the drive motor M that can withstand high heat flows out from the gap to the outside. Can be prevented. Further, when the shaft 6 rotates, the first and second sealing materials 30 and 33 can reduce the sliding resistance and suppress the generation of abnormal noise.
Moreover, even if the first sealing material 30, the second sealing material 33, and the second winding diameter spacer 21 are burned and melted due to higher heat, the PEEK melt remains in place, so that these The gap between the sealing materials 30 and 33 and the hole 6b of the shaft 6 can be filled to suppress the outflow of combustible gas.

  Therefore, as shown in the above-described conventional technology and the Japanese Patent Application No. 2013-202736 filed by the present applicant, it is not necessary to install a large number of heating foam materials, which are conventional fire prevention parts, inside and outside the shaft 6, and heating foaming Since the amount of materials can be reduced, the manufacturing cost can be reduced, and the number of assembly steps of parts during manufacturing can be greatly reduced. Furthermore, although it is a fire-proof type shutter 1, it can be manufactured by the same simple manufacturing process as a non-fire-proof type shutter.

  Further, since the three winding diameter spacers 20 to 22 attached to the shaft 6 are made of resin and have elasticity, even if they are formed in a C shape, they can be mounted with one touch. Moreover, when the first to third winding diameter spacers 20, 21, and 22 are mounted on the shaft 6, even if the first to third winding diameter spacers 20, 21, and 22 are slid along the outer peripheral surface of the shaft 6, they are not made of metal and are not damaged. Moreover, since it is not necessary to attach a heating foam material to the inner surface of the excess winding portion of the slat 8 as described above, it is not necessary to provide the excessive winding portion for the shaft 6 in the slat curtain 9, and this also reduces the cost. become.

The shutter according to the present invention is not limited to the shutter according to the above-described embodiment, and can be appropriately changed or replaced without departing from the gist of the present invention.
For example, in the above-described embodiment, the first and third winding diameter spacers 20 and 22 are also formed of a non-combustible resin material or other resin material, but these are made of aluminum die casting or steel for installation near both ends of the shaft 6. Alternatively, it may be made of a nonflammable metal such as zinc die casting. In this case, it is also possible to provide an excessive winding portion on the slat curtain 9.

In the above-described embodiment, the first to third winding diameter spacers 20, 21, and 22 are formed in a C shape and attached to the shaft 6. However, as in the prior art, two semicircular shaft pieces are used. It may be attached and screwed from both sides. Even in this case, the second winding diameter spacer 21 is formed of PEEK which is a nonflammable resin material in order to close the hole 6b.
In addition, about the 2nd winding diameter spacer 21, the part which plugs the hole 6b of the shaft 6 and fixes to the flange part 28 of the 2nd drum 14 with the screw 23 should just be formed with PEEK of the nonflammable resin material.

  As for the shutter according to the present invention, in the shutter 1 according to the above-described embodiment, the electric shutter 1 in which the electric motor M winds and feeds the slat curtain 9 has been described. However, the present invention is limited to the electric shutter 1. The present invention can also be applied to a manual shutter that manually winds and unwinds the slat curtain 9.

In the embodiment of the present invention, the first sealing material made of a non-combustible resin material is provided between the first and second drums 13 and 14 and the support shaft 12 in the shutter 1 and the gap between the crown 18 and the drive motor M. 30 and sealed with the second sealing material 33, and further the hole 6b of the screw 23 for fixing the second drum 14 built in the shaft 6 is sealed with the second winding diameter spacer 21 made of a non-combustible resin material. Even if it is exposed and melted, it stays without flowing out and seals the gap and the hole 6b.
However, the present invention is not limited to the shutter 1, and as a fire protection device for various fittings such as windows and doors and other various products, various gaps and various kinds of communication between the inside and outside of the appropriate first member and the second member are possible. For example, PEEK can be attached as a non-combustible resin material to fill the holes of the third member. Even with these fire prevention devices, the effect of the present invention of preventing the inflammable gas from flowing in and out can be achieved.

Moreover, the nonflammable resin material by this invention is not limited to PEEK, The other resin material which has the same kind of characteristic may be sufficient.
In the present invention, the first and second drums 13 and 14 and the crown 18 in the embodiment described above constitute a bearing, and the outer peripheral surface of the support shaft 12 and the electric motor M constitute a shaft member. Further, the second winding diameter spacer 21 constitutes a spacer. The slat curtain 9 constitutes a shutter surface.

DESCRIPTION OF SYMBOLS 1 Shutter 2 Window 3 Frame part 4 Shutter case 5 Vertical frame 6 Shaft 6b Hole 8 Slat 9 Slat curtain 10 Spring set 11 Drive unit 12 Support shaft 13 First drum 14 Second drum 15 Spring 17 Adapter 18 Crown 18a, 27a Inner surface 20 One winding diameter spacer 21 Second winding diameter spacer 22 Third winding diameter spacer 23 Screw 28 Flange portion 28a Screw hole 30 First sealing material 33 Second sealing material M Electric motor

Claims (2)

A shutter equipped with a shutter surface that can be advanced and retracted so that it can be wound and unwound on a shaft,
A spacer that is fixed to the outer peripheral surface of the shaft through a hole in the shutter surface is attached, and the spacer is formed of a nonflammable resin material,
Inside the shaft, a shaft member that rotatably supports the shaft, a drum that passes through the shaft member and rotates integrally with the shaft, and nonflammability disposed between the shaft member and the drum A first sealing material made of a resin material is provided,
A drive motor that rotatably supports the shaft, a crown that is inserted through an outer peripheral surface of the drive motor and rotates integrally with the shaft, and a drive motor and a crown that are spaced apart from the drum in the shaft. A second sealing material made of a non-combustible resin material disposed between,
The drive motor is disposed in a space between the drum and the crown in the shaft ;
It said first sealing member is sealed the gap between the crown and the second sealing member the drive motor with seals the gap between the shaft member and the drum,
The shutter is characterized in that when the first sealing material and the second sealing material are melted in the event of a fire, the gap is filled with the melt .   The shutter according to claim 1, wherein the non-combustible resin material is PEEK.

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