JP2012188867A - Fixing structure for fireproof structure and fixing target to be fixed in fireproof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing structure in which a flame block performance can be ensured even in the case where a fixing target such as a transmitter is fixed in a fireproof structure such as a fireproof shutter device, or to provide a fixing target which can be fixed in such a fireproof structure while ensuring a flame block performance.SOLUTION: A fixing structure for fixing a fixing target to a fireproof structure comprises fixing screws 30 for fixing a transmitter to a shutter curtain 12 and a presser 40 which presses the transmitter 22 away from the shutter curtain 12. In the case where the fixing screws 30 or the presser 40 is heated with heat in the case of a fire, the presser 40 presses the transmitter 22 with a pressing force equal to or more than a fixing force of the fixing screws 30.

Description

  The present invention relates to a fixing structure for a fireproof structure and a fixed object fixed to the fireproof structure.

  2. Description of the Related Art Conventionally, an electric fire shutter device that forms a fire prevention section in a building by making an opening provided in various buildings fully closed at the time of a fire has spread. This fire prevention shutter device is configured with a shutter curtain, and when a fire is detected by the fire detector, the shutter curtain is lowered by its own weight based on the fire detection signal output from the fire detector, Form a fire protection compartment.

  Such a fire shutter device is provided with an obstacle detection device (hazard prevention device). This obstacle detection device, when closing the opening by lowering the shutter curtain, will harm the obstacle by stopping the lowering of the shutter curtain when the shutter curtain touches the obstacle. It is for preventing. This obstacle detection device includes a seat plate switch provided at the lower end of the shutter curtain, and a signal line for transmitting a signal output from the seat plate switch to the control unit of the fire prevention shutter device. A cord reel for unwinding is provided. When an obstacle is detected by the seat switch while the shutter curtain is descending, the detection signal output from the seat switch is transmitted to the control unit via the signal line, and the control unit transmits the shutter curtain. Stop descent. In addition, even if the seat switch is moved up and down as the shutter curtain is opened and closed, the signal reel is wound by the cord reel so that the unwinding length of the signal line is always maintained at an appropriate length. Or unwinding is performed (for example, refer patent document 1).

  However, when the signal line is used in this way, there is a possibility that the obstacle detection device does not function normally if the signal line is disconnected due to a malfunction of the code reel or a mischief by a third party. In order to prevent this problem, the inventors of the present application paid attention to wirelessly transmitting and receiving information on the obstacle detection state when the shutter curtain descends. Specifically, a transmitter is provided in the vicinity of the seat plate switch in the shutter curtain, and a receiver is provided in the vicinity of the control unit. The detection signal output from the seat plate switch is wirelessly transmitted from the transmitter. Is received by the receiver and output to the control unit. According to such a configuration, it is possible to solve problems caused by signal lines and cord reels.

JP 2007-327225 A

  However, when the transmitter is fixed to the shutter curtain in this way, a new problem may occur. That is, the fire shutter device is obliged to have a flame shielding performance by law, even if the shutter curtain is heated at a predetermined temperature for a predetermined time from the side opposite to the side where the transmitter is fixed. In addition, it is required that no flame or smoke is generated on the side where the transmitter is fixed for a predetermined time or longer. However, when the transmitter is fixed to the shutter curtain, the transmitter is heated through the shutter curtain, and the resin casing of the transmitter becomes hot and emits smoke. There was a possibility that could not be secured.

  The present invention is for solving the above-described problems in the prior art, and even when a fixed object such as a transmitter is fixed to a fireproof structure such as a fireproof shutter device, flameproof performance. To provide a fixing structure such as a transmitter that can be fixed while securing flameproof performance to such a fire prevention structure. Objective.

  In order to solve the above-described problems and achieve the object, a fixing structure for a fire prevention structure according to claim 1 is a fixing structure for fixing a fixing object to the fire prevention structure, wherein the fire prevention structure is provided. A fixing means for fixing the fixed object with respect to a structure; and a pressing means for pressing the fixed object in a direction away from the fire prevention structure, wherein the fixing means or the pressing means is heated by heat in a fire. When heated, the pressing means presses the fixed object with a pressing force equal to or greater than the fixing force by the fixing means.

  The fixing structure for the fire prevention structure according to claim 2 is the fixing structure for the fire prevention structure according to claim 1, wherein the fixing means is heated by heat at the time of fire, The fixing of the fixed object with respect to the fire prevention structure can be released, and the pressing means is configured to release the fixing object when the fixing of the fixing object with respect to the fire prevention structure can be released. Press in a direction away from the fire prevention structure.

  The fixing structure for the fire prevention structure according to claim 3 is the fixing structure for the fire prevention structure according to claim 1 or 2, wherein the pressing means includes at least a part of the fire prevention structure and the fixing object. And a deformable portion that is arranged between at least a part of the fireproof structure and is deformable in a deformation direction connecting the fire prevention structure and the fixed object.

  The fixing structure for the fire prevention structure according to claim 4 is the fixing structure for the fire protection structure according to claim 3, wherein the deformable portion is a plate-like body formed of an elastic material. When the object to be fixed is fixed to the object by the fixing means, it is maintained in parallel along the non-deformation direction perpendicular to the deformation direction against the elastic force by the fixing force. When the fixing object to the fire prevention structure can be released by the fixing means, it is deformed in the deformation direction by its own elastic force.

  The fixing structure for the fire prevention structure according to claim 5 is the fixing structure for the fire prevention structure according to claim 3, wherein the deformed portion is a plate-like body formed as a bimetal, When the deformation part is not heated to a predetermined deformation temperature, the deformation part is maintained in parallel along a non-deformation direction orthogonal to the deformation direction, and the deformation part becomes equal to or higher than the deformation temperature due to heat during a fire. When heated, it deforms in the deformation direction.

  Further, the fixing structure for the fire prevention structure according to claim 6 is the fixing structure for the fire prevention structure according to claim 3, wherein the deformed portion is a plate-like body formed of a shape memory alloy, When the deformation part is not heated to a predetermined transformation temperature by the heat of the heat, the deformation part is maintained in parallel along the non-deformation direction orthogonal to the deformation direction, and the deformation part is transformed to the transformation temperature by heat during a fire. When heated as described above, the memorized shape is recovered and deformed in the deformation direction.

  The fixing structure for the fire prevention structure according to claim 7 is the fixing structure for the fire prevention structure according to any one of claims 3 to 6, wherein the pressing means includes the fire prevention structure and the fixing object. And a base plate disposed along a non-deformation direction orthogonal to the deformation direction between the object and the deformable portion provided on the base plate.

  Moreover, the fixing structure with respect to the fire prevention structure according to claim 8 is the fixing structure with respect to the fire prevention structure according to any one of claims 3 to 6, wherein the fixing structure is a side surface of the fixing object, and the fire prevention structure is provided. The deformation portion is provided on a side surface facing the object.

  The fixing structure for the fire prevention structure according to claim 9 is the fixing structure for the fire protection structure according to any one of claims 3 to 6, wherein the fixing structure is a side surface of the fire protection structure, The deformation portion is provided on a side surface facing the object.

  The fixing structure for the fireproof structure according to claim 10 is the fixing structure for the fireproof structure according to claim 3, wherein the deformable portion is a coil spring, and the fixed object is attached to the fireproof structure. Is fixed between the at least part of the fireproof structure and the at least part of the object to be fixed against the elastic force of the self by the fixing force. When the fixing object to the fire prevention structure can be released by the fixing means, the fixing object is attached to the fire prevention structure in the deformation direction by its own elastic force. Rush.

  Moreover, the fixing structure with respect to the fireproof structure according to claim 11 is the fixing structure with respect to the fireproof structure according to any one of claims 2 to 10, wherein the fixing means is configured to A fixing screw for fixing a fixed object, which is heated and melted by heat at the time of a fire so that the fixation of the fixed object to the fire prevention structure can be released.

  Moreover, the fixing structure with respect to the fireproof structure according to claim 12 is the fixing structure with respect to the fireproof structure according to any one of claims 2 to 10, wherein the fixing means is configured to A magnet for fixing a fixed object, which is heated by heat at the time of a fire to reduce the magnetic force, so that the fixation of the fixed object to the fire prevention structure can be released.

  The fixed object fixed to the fireproof structure according to claim 13 is a fixed object fixed to the fireproof structure through a fixing means, and the fixed object is fixed to the fireproof structure. Pressing means for pressing in a direction away from the head.

  According to the fixing structure for the fire prevention structure according to claim 1, when the fixing means or the pressing means is heated by heat at the time of the fire, the fixing object is fixed by the pressing means with a pressing force equal to or more than the fixing force by the fixing means. Since the fixed object can be detached in the direction away from the fire prevention structure because it is pressed, the fixed object can be prevented from being heated through the fire prevention structure, or heated. Since the degree can be reduced, the possibility that the fixed object is ignited can be reduced, and the flameproof performance of the fireproof structure such as the fireproof shutter device can be secured.

  According to the fixing structure for the fire prevention structure according to claim 2, when the fixing means is heated by the heat at the time of the fire and the fixing of the fixing object to the fire prevention structure can be released, the fixing object is fireproof. Since pressing is performed in a direction away from the structure, the fixed object can be reliably detached in a direction away from the fire prevention structure.

  According to the fixing structure for the fire prevention structure according to claim 3, since the deformation portion is disposed between at least a part of the fire prevention structure and at least a portion of the fixing object, the deformation portion is largely outside. Without being exposed, the design of the fireproof structure can be prevented from being damaged by the deformed portion. In addition, the deformation part is deformed in a deformation direction connecting the fire prevention structure and the fixed object, so that the fixed object can be pressed in a direction away from the fire prevention structure, and the fixed object is separated from the fire prevention structure. Can be detached.

  According to the fixing structure for the fire prevention structure according to claim 4, the deformation portion formed on the plate-like body from the elastic material is deformed by its own elastic force, so that the fixing object is separated from the fire prevention structure. Press. According to this structure, it becomes possible to form the deformed portion easily and inexpensively as compared with the case where the deformed portion is formed of a bimetal or a shape memory alloy.

  According to the fixing structure for the fire prevention structure according to the fifth aspect, the deformation portion formed as the bimetal is heated and deformed to press the fixing object in a direction away from the fire prevention structure. According to this structure, when the fixed object is fixed, the deformed portion is not deformed and has a flat plate shape. Therefore, the fixed object can be easily fixed to the fireproof structure.

  According to the fixing structure for the fire prevention structure according to the sixth aspect, the deformed portion formed of the shape memory alloy is heated and restored, thereby pressing the fixing object in a direction away from the fire prevention structure. According to this structure, when the fixed object is fixed, the deformed portion is not deformed and has a flat plate shape. Therefore, the fixed object can be easily fixed to the fireproof structure.

  According to the fixing structure for the fire prevention structure according to claim 7, the deformation portion is provided by disposing the base plate between the fire prevention structure and the fixing object by providing the deformation portion on the base plate. Since it is not necessary to change the structure of the fire prevention structure or the fixed object, the pressing means can be easily installed even on the existing fire prevention structure or the fixation object.

  According to the fixing structure for the fire prevention structure according to claim 8, since the deformed portion is provided on the side surface of the fixed object that faces the fire protection structure, the pressing means is integrated with the fixed object. Therefore, it is possible to omit the trouble of individually installing the pressing means.

  According to the fixing structure for the fire prevention structure according to claim 9, since the deformed portion is provided on the side surface of the fire prevention structure that faces the fixing object, the pressing means is integrated with the fire prevention structure. Therefore, it is possible to omit the trouble of individually installing the pressing means.

  According to the fixing structure for the fire prevention structure according to the tenth aspect, the coil spring is deformed by its own elastic force to urge the fixing object in a direction away from the fire prevention structure. According to this structure, it is possible to easily obtain the required urging force as compared with the case where the deforming portion is formed in a plate-like body, and it is easy to configure the pressing means by diverting various existing coil springs. It is.

  According to the fixing structure for the fire prevention structure according to claim 11, since the fixing screw is heated and melted by the heat at the time of fire, the fixation of the fixing object to the fire prevention structure can be released. The fixation of the fixed object can be automatically released, and the fixed object can be detached from the fire prevention structure simply by pressing the fixed object with the pressing means.

  According to the fixing structure for the fire prevention structure according to claim 12, the magnet is heated by the heat at the time of the fire to reduce the magnetic force, so that the fixing of the fixing object to the fire prevention structure can be released. Sometimes, the fixation of the fixed object can be automatically released, and the fixed object can be detached from the fire prevention structure simply by pressing the fixed object with the pressing means.

  According to the fixed object to be fixed to the fire prevention structure according to claim 13, when the fixing means or the pressing means is heated by heat at the time of the fire, the pressing means with the pressing force more than the fixing force by the fixing means. Since the fixed object is pressed, the fixed object can be detached in a direction away from the fire prevention structure, and therefore, the fixed object can be prevented from being heated through the fire prevention structure or heated. Even in such a case, the degree can be reduced, so that the possibility that the fixed object is ignited can be reduced, and the flameproof performance of a fireproof structure such as a fireproof shutter device can be ensured.

It is a front view of the shutter apparatus to which the fixed target object was fixed by applying the fixing structure which concerns on Embodiment 1 of this invention. It is a side view of the shutter apparatus of FIG. It is an expansion perspective view of a transmitter periphery. FIG. 4 is an exploded perspective view of FIG. 3. It is a figure which shows a pressing tool, (a) is a front view, (b) is a top view, (c) is a side view. It is a figure which shows typically the state change of a transmitter periphery, (a) is a figure which shows the state before a heating, (b) is a figure which shows the state during heating, (c) is a figure which shows the state after heating It is. It is a figure which shows the transmitting apparatus which concerns on Embodiment 2 of this invention, (a) is a front view, (b) is a top view, (c) is a side view, (d) is a bottom view. It is an expansion perspective view of the transmitter periphery which concerns on Embodiment 3 of this invention. FIG. 9 is an exploded perspective view of FIG. 8. It is an expansion perspective view of the deformation part periphery which concerns on a modification, and is a figure which shows the state before a deformation | transformation of a latching claw. It is an expansion perspective view of the deformation part periphery which concerns on a modification, and is a figure which shows the state after a deformation | transformation of a latching claw.

  Hereinafter, with reference to the attached drawings, concepts common to the respective embodiments according to the present invention and specific contents of the respective embodiments will be described, and finally, modifications to the respective embodiments will be described. However, the present invention is not limited to each embodiment.

[Concepts common to each embodiment]
First, a concept common to each embodiment according to the present invention will be described. Each embodiment relates to a fixing structure for fixing a fixed object to a fireproof structure and a fixed object fixed to the fireproof structure.

  Here, the fire prevention structure corresponds to any structure that requires fire prevention performance, for example, a fire prevention shutter device, a fire door, or fire prevention, which is required by law or specification to have flame prevention performance. You can cite walls. Below, the case where a fire prevention structure is a fire prevention shutter apparatus (more specifically, the shutter curtain 12 provided in the shutter apparatus 10 mentioned later) is demonstrated. However, the fire shutter device itself can be configured in the same manner as in the prior art, and the configuration and processing not specifically mentioned are the same as in the prior art. In the following, the fire shutter device is intended to prevent the fire from spreading to the other space when a fire occurs in one of the two spaces partitioned by the fire shutter device. A space where a fire has occurred (or a space in which a possibility of a fire is assumed) is referred to as a “fire-presumed space”, and a space that is to be prevented from spreading fire is referred to as a “fire-spreading prevention target space”. In addition, of the both side surfaces of a shutter curtain, which will be described later, in the fire shutter device, the side surface exposed in the assumed fire occurrence space is referred to as “fire occurrence assumed side surface”, and the side surface exposed in the fire spread prevention target space is referred to as “fire spread prevention target side surface”. However, this concept is relative, and of the two spaces partitioned with the fire shutter device in between, any space can fall under both a fire occurrence assumption space and a fire spread prevention target space. There are cases where it should be assumed, and in this case, of the both sides of the shutter curtain, any side is a fire occurrence assumed side and a fire spread prevention side.

  In addition, the fixed object corresponds to any object fixed to the fire prevention structure, and examples thereof include a transmitter, a mailbox, and an authentication device for performing security authentication when opening and closing the fire prevention structure. it can. Below, the case where a fixed target object is a transmitter is demonstrated. This transmitter is fixed to a fire spread prevention target side surface among both side surfaces of a shutter curtain described later in the fire prevention shutter device.

  Under such a premise, the fixing structure includes fixing means and pressing means. The fixing means is means for fixing the fixed object to the fireproof structure, and the pressing means is means for pressing the fixed object in a direction away from the fireproof structure. In such a structure, 1) the fixing force by the fixing means is reduced by being heated by heat at the time of fire, while the pressing force by the pressing means is regardless of whether it is heated by heat at the time of fire. Structure that is constant (hereinafter referred to as the first structure) 2) The fixing force by the fixing means is constant regardless of whether or not it is heated by the heat at the time of fire, while the pressing force by the pressing means is Structure that increases when heated by heat (hereinafter referred to as second structure), 3) The fixing force by the fixing means decreases when heated by the heat at the time of the fire, and the pressing force by the pressing means is at the time of the fire It is roughly classified into a structure (hereinafter referred to as a third structure) that increases by being heated by the heat. In any structure, when at least one of the fixing means and the pressing means is heated by heat at the time of the fire, the pressing means presses the object to be fixed with a pressing force greater than the fixing force by the fixing means. Thus, the fixed object is detached from the fire prevention structure.

[Embodiment 1]
Next, the specific content of Embodiment 1 is demonstrated. This form relates to the first structure, and can be deformed in a deformation direction connecting the fire prevention structure and the fixed object when the fixation by the fixing means of the fixed object to the fire prevention structure can be released. It is the form provided with the deformation part which is. 1 is a front view of a shutter device to which a fixed object is fixed by applying the fixing structure according to the first embodiment, and FIG. 2 is a side view of the shutter device of FIG.

(Shutter device)
The shutter device 10 is an electric fire-proof shutter device that forms a fire-proof section in the building by fully closing the opening 1 provided in the building when a fire breaks out. A curtain 12 is provided. In the following description, the X direction in FIG. 1 or 2 is the width direction or the left-right direction, the Y direction is the front-rear direction or the depth direction, the Z direction orthogonal to the X direction and the Y direction is the height direction (the + Z direction is upward) , −Z direction is downward). 1 and 2 schematically show each part of the shutter device 10.

  The curtain storage unit 11 is a hollow body for storing each part of the shutter device 10, and is attached to a position near the upper end of the opening 1. Inside the curtain storage unit 11, a winding shaft (not shown) and a receiver 23 described later are stored. In a state where the shutter curtain 12 is wound up by the winding shaft, the shutter curtain 12 is accommodated in the curtain storage unit 11. A slit (not shown) is formed on the lower surface of the curtain storage unit 11, and the shutter curtain 12 is taken in and out through this slit.

  The shutter curtain 12 is shielding means that brings the opening 1 into a fully open state, a fully closed state, or a state between these two states by being wound or unwound by a winding shaft. Both end portions in the width direction of the shutter curtain 12 are inserted into the guide rail 2 provided along the vertical direction at the inner edge of the opening 1, and can slide in the guide rail 2 in the vertical direction. And in the front-back direction, it is controlled so that it does not drop out of the guide rail 2. A horizontal seat plate 13 is provided at the lower end of the shutter curtain 12, and a seat plate switch (not shown) is attached to the seat plate 13.

(Shutter obstacle detection system)
A shutter obstacle detection system 20 is attached to the shutter device 10 configured as described above. The shutter obstacle detection system 20 is a system that detects an obstacle with respect to the shutter curtain 12, and includes a seat plate switch, a transmitter 22, and a receiver 23 (not shown). The seat plate switch is an obstacle sensor that detects that the seat plate 13 has come into contact with an obstacle when the shutter curtain 12 is closed, and is provided on the seat plate 13 of the shutter curtain 12 with a known structure. The transmitter 22 is a communication unit that wirelessly transmits the output signal of the seat plate switch. The receiver 23 is a communication unit that wirelessly receives the output signal of the seat plate switch. The structure of the transmitter 22 will be described together with a fixing structure described later.

(Fixed structure)
Next, a fixing structure for fixing the transmitter 22 that is a fixed object to the shutter curtain 12 that is a fire prevention structure will be described in detail. 3 is an enlarged perspective view of the periphery of the transmitter 22, and FIG. 4 is an exploded perspective view of FIG. As shown in FIGS. 3 and 4, a transmitter 22 is fixed via a fixing screw 30 at a position on the side of the fire prevention target side surface of the shutter curtain 12 and above the seat plate 13. A pressing tool 40 is sandwiched between the transmitter 22 and the shutter curtain 12 and the seat plate 13.

  The transmitter 22 is configured by housing an electronic element and a battery inside a housing 24. The housing 24 is made of resin and is formed in a rectangular parallelepiped shape with the width direction as a longitudinal direction. A fixing piece 25 is integrally formed at each end portion of the casing 24 in the longitudinal direction so as to protrude further outward than the end portions. Among these, the fixed piece 25 is a plate-like piece parallel to the side surface of the shutter curtain 12, and the fixed piece 25 is a plate-like piece parallel to the upper surface of the seat plate switch. Screw holes 26 are formed in the fixing pieces 25, and the transmitter 22 is connected to the shutter curtain 12 and the seat plate 13 by screwing the fixing screws 30 penetrating the screw holes 26 into the shutter curtain 12 and the seat plate 13. It is fixed to the seat plate 13.

The fixing screw 30 is a means for fixing the transmitter 22 which is a fixing object to the shutter curtain 12 and the seat plate 13 which are fire prevention structures, and is heated by heat at the time of fire, It is a fixing means that enables the transmitter 22 to be fixed to the shutter curtain 12 and the seat plate 13.
Here, “can be released” means that the fixing force of the fixed object to the fire prevention structure is less than the pressing force by the pressing means, and the fixed object falls off the fire prevention structure. In addition to the case, even if the fixed object does not fall off with respect to the fire prevention structure (for example, even when the fixed state by the fixing means of the fixed object to the fire prevention structure is maintained), This includes a case where the fixing state by the fixing means of the fixing object to the fire prevention structure can be released by the generation of the pressing force by the pressing means.
Specifically, the fixing screw 30 is formed of resin, and the fire occurrence side surface of the shutter curtain 12 is heated by the heat generated in the assumed fire occurrence space at the time of a fire. When the fire spread prevention target side surface is heated, the transmitter 22 can be unfixed to the shutter curtain 12 by being heated and melted by the heat conducted from the fire spread prevention target side surface. The temperature at which the fixing screw 30 is melted (hereinafter referred to as the melting temperature) is shielded by heating the casing of the transmitter 22 to generate smoke or the like so that the fixing screw 30 is less than the temperature at which the fixing screw 30 ignites or smokes. It is set experimentally below the temperature that would reduce the flame performance. And the kind and quantity of the resin additive which comprise the fixing screw 30 are adjusted so that it may fuse | melt at the melting temperature determined in this way.

  The pressing tool 40 presses the transmitter 22 in a direction away from the shutter curtain 12 and the seat plate 13 when the fixing of the transmitter 22 to the shutter curtain 12 and the seat plate 13 by the fixing screw 30 can be released. It is. 5A and 5B are diagrams showing the pressing tool 40, where FIG. 5A is a front view, FIG. 5B is a plan view, and FIG. 5C is a side view.

  Specifically, the pressing tool 40 is configured to have a substantially L-shaped side surface by combining a pair of first base plate 41 and second base plate 42 so as to be orthogonal to each other. The first base plate 41 is sandwiched between the side surface of the shutter curtain 12 to be prevented from spreading and the transmitter 22, and is formed as a plate-like body whose longitudinal direction is the width direction. The first base plate 41 is formed to have the same height as the transmitter 22 and a length that is slightly shorter than the transmitter 22, and at least the fixing with the fixing screw 30 causes an obstacle. The dimensions are such that there is no such thing. The second base plate 42 is sandwiched between the upper surface of the seat plate 13 and the transmitter 22 and is formed as a plate-like body whose longitudinal direction is the width direction. The second base plate 42 is formed to have the same depth as the transmitter 22 and a length that is slightly shorter than the transmitter 22, so that at least the fixing with the fixing screw 30 is not hindered. It is formed with various dimensions.

  Each of the first base plate 41 and the second base plate 42 is provided with a pair of deformation portions 43. When the transmitter 22 that is a fixed object is fixed to the shutter curtain 12 and the seat plate 13 that are fire-proof structures by the fixing screws 30, the respective deforming portions 43 are arranged in the shutter curtain 12 and the seat plate. 13 is arranged between at least a part of the transmitter 22 and at least a part of the transmitter 22, and when the fixing of the transmitter 22 to the shutter curtain 12 and the seat plate 13 by the fixing screw 30 can be released, the shutter curtain 12 and the seat plate 13 and the transmitter 22 can be deformed (in this embodiment, the Y direction in FIG. 2).

  More specifically, each deformation portion 43 is a plate-like body formed of an elastic member, and is curved toward the shutter curtain 12 and the seat plate 13 rather than the first base plate 41 and the second base plate 42. It is deformed to protrude. Then, as schematically illustrated in FIG. 6A, each deformable portion 43 has the fixing force when the transmitter 22 is fixed to the shutter curtain 12 and the seat plate 13 by the fixing screw 30. By being accommodated in the opening 44 formed in the first base plate 41 or the second base plate 42 against its own elastic force, the non-deformation direction (in this embodiment, orthogonal to the deformation direction). , In the X direction in FIG. 1 or FIG. In addition, as schematically shown in FIG. 6B, each deformable portion 43 has its own when the fixing by the fixing screw 30 of the transmitter 22 to the shutter curtain 12 and the seat plate 13 can be released. It is deformed in the deformation direction by elastic force (restoring force that restores to a curved shape). Then, when the pressing tool 40 is pressed in a direction away from the shutter curtain 12 and the seat plate 13 by this elastic force, the transmitter 22 and the shutter 22 together with the pressing tool 40, as schematically shown in FIG. Pressed in a direction away from the curtain 12 and the seat plate 13, and detached from the shutter curtain 12 and the seat plate 13. Therefore, even if the side surfaces of the shutter curtain 12 and the seat plate 13 that are to be prevented from spreading are heated, the transmitter 22 can be prevented from being heated by this heat, and the flame shielding performance is prevented from being lowered by the heating of the transmitter 22. can do.

  As for the position and curved shape of the deforming portion 43, or the relative positional relationship between the deforming portion 43 and the transmitter 22, as long as the transmitter 22 can be pressed in the direction away from the shutter curtain 12 and the seat plate 13. It can be arbitrarily determined. In the present embodiment, the position and the curved shape of the deforming portion 43 are determined so as to be symmetrical left and right with respect to the center position of the transmitter 22 in the width direction. According to such a configuration, the transmitter 22 can be pressed with the same force at left and right symmetrical positions.

  In addition, the specific manufacturing method of the pressing tool 40 configured in this way is arbitrary. For example, the first base plate 41 and the second base plate 42 are individually manufactured and then joined to each other by welding or the like. May be. The deformable portion 43 may be manufactured separately from the first base plate 41 and the second base plate 42 and then joined to the first base plate 41 and the second base plate 42 by welding or the like. More preferably, one flat plate made of an elastic material is prepared, and the deformed portion 43 and the opening 44 are simultaneously formed by punching the flat plate, and at the same time, the flat plate is bent into a substantially L-shaped side surface. Thus, the pressing tool 40 is manufactured.

(Effect of Embodiment 1)
According to the fixing structure for the fire prevention structure according to the first embodiment, when the pressing tool 40 is heated by heat at the time of the fire and the fixing of the transmitter 22 to the shutter curtain 12 and the seat plate 13 can be released, Since the transmitter 22 is pressed in a direction away from the shutter curtain 12 and the seat plate 13, the transmitter 22 is detached from the shutter curtain 12 and the seat plate 13, so that the transmitter 22 passes through the shutter curtain 12 and the seat plate 13. Heating can be prevented, or even when heated, the degree can be reduced, the possibility that the transmitter 22 can ignite, etc. can be reduced, and the flame shielding performance of the shutter device 10 can be ensured. It becomes possible.

  In addition, when the transmitter 22 is fixed to the shutter curtain 12 and the seat plate 13 by the fixing screw 30, at least a part of the shutter curtain 12 and the seat plate 13 and at least a part of the transmitter 22 are mutually connected. Since the deforming portion 43 is disposed between them, the deforming portion 43 is not largely exposed to the outside, and the design of the shutter device 10 can be prevented from being damaged by the deforming portion 43. When the transmitter 22 can be released from the shutter curtain 12 and the seat plate 13, the deforming portion 43 is deformed in the deformation direction connecting the shutter curtain 12 and the seat plate 13 and the transmitter 22. The transmitter 22 can be pressed away from the shutter curtain 12 and the seat plate 13.

  Moreover, the deformation | transformation part 43 formed in the plate-shaped body from the elastic material deform | transforms with an own elastic force, and presses the transmitter 22 in the direction away from the shutter curtain 12 and the seat board 13. FIG. According to this structure, the deformable portion 43 can be formed easily and inexpensively as compared with the case where the deformable portion 43 is formed of a bimetal or a shape memory alloy.

  In addition, by providing the first base plate 41 and the second base plate 42 with the deformed portion 43, the first base plate 41 and the second base plate 42 are arranged between the shutter curtain 12 and the seat plate 13 and the transmitter 22. The deformable portion 43 can be installed by arranging the shutter curtain 12, the shutter curtain 12, the seat plate 13, or the transmitter 22 without changing the structure. The pressing tool 40 can also be easily installed on the transmitter 22.

  Further, since the fixing screw 30 is heated and melted by heat at the time of fire, the transmitter 22 can be unfixed to the shutter curtain 12 and the seat plate 13, so that the transmitter 22 is automatically fixed at the time of fire. The shutter 22 can be released from the shutter curtain 12 and the seat plate 13 simply by pressing the transmitter 22 with the pressing tool 40.

  Further, when the fixing screw 30 is heated by heat at the time of a fire and the fixing of the transmitter 22 to the shutter curtain 12 and the seat plate 13 can be released, the fixing screw 30 is pressed away from the shutter curtain 12 and the seat plate 13. Therefore, since the transmitter 22 is detached from the shutter curtain 12 and the seat plate 13, the transmitter 22 can be prevented from being heated through the shutter curtain 12 and the seat plate 13, or even when heated. The degree can be reduced, the possibility that the transmitter 22 will ignite, etc., can be reduced, and the flame shielding performance of the shutter device 10 can be ensured.

[Embodiment 2]
Next, a second embodiment will be described. This form relates to the first structure, and is a form in which a deforming portion is provided on the side surface of the fixed object that faces the fire prevention structure. However, the configuration in the second embodiment is the same as the configuration in the first embodiment except for a portion to be specially described, and the description is given by attaching the reference numerals used in the first embodiment as necessary. Omitted.

  7A and 7B are diagrams showing the transmitter 22 according to the present embodiment, in which FIG. 7A is a front view, FIG. 7B is a plan view, FIG. 7C is a side view, and FIG. As shown in FIG. 7, when the transmitter 22 is heated by heat at the time of a fire, the transmitter 22 can be released from fixing to the shutter curtain 12 and the seat plate 13 by the fixing screw 30. A deforming portion 43 is provided as pressing means for pressing the transmitter 22 in a direction away from the shutter curtain 12 and the seat plate 13. More specifically, the casing 24 of the transmitter 22 is formed of an elastic member. Among the side surfaces of the casing 24, the side surface facing the shutter curtain 12 and the seat plate 13 and the seat plate switch are opposed. A deforming portion 43 and an opening 44 are provided by punching or the like on the side surface. The pressing tool 40 described in the first embodiment is omitted in the second embodiment.

  Then, when the transmitter 22 is fixed to the shutter curtain 12 and the seat plate 13 by the fixing screw 30, each of the deforming portions 43 resists its own elastic force by the fixing force, and the opening portion 44. By being accommodated in the housing, it is maintained in parallel along the non-deformation direction (the X direction in FIG. 1 or FIG. 2 in the present embodiment) orthogonal to the deformation direction. Further, each of the deformable portions 43 can be released by its own elastic force (restoring force to restore the curved shape) when the fixing of the transmitter 22 to the shutter curtain 12 and the seat plate 13 by the fixing screw 30 can be released. Deform in the deformation direction. The transmitter 22 is separated from the shutter curtain 12 and the seat plate 13 by pressing the transmitter 22 away from the shutter curtain 12 and the seat plate 13 by this elastic force. Therefore, even if the side surfaces of the shutter curtain 12 and the seat plate 13 that are to be prevented from spreading are heated, the transmitter 22 can be prevented from being heated by this heat, and the flame shielding performance is prevented from being lowered by the heating of the transmitter 22. can do. In addition, when each deformation | transformation part 43 is comprised like this Embodiment, since the opening part 44 will be formed in the housing | casing 24 unlike the case of Embodiment 1, the waterproof performance of the housing | casing 24 is provided. Etc. may be damaged. In order to avoid this problem, it is preferable to attach each deformation part 43 to the outer surface of the conventional housing 24 having waterproof performance.

(Effect of Embodiment 2)
According to the fixing structure for the fire prevention structure according to the second embodiment, in addition to the same effects as the first embodiment, on the side surface of the transmitter 22 that faces the shutter curtain 12 and the seat plate 13, Since the deforming portion 43 is provided, the pressing tool 40 can be integrally formed with the transmitter 22 and can be attached, so that the trouble of individually installing the pressing tool 40 can be omitted.

[Embodiment 3]
Next, Embodiment 3 will be described. This form relates to the first structure, and is a form in which the deformed portion is formed as a coil spring. However, the configuration in the third embodiment is the same as the configuration in the first embodiment except for a part to be noted, and the description is given by attaching the reference numerals used in the first embodiment as necessary. Omitted.

  FIG. 8 is an enlarged perspective view of the periphery of the transmitter 22 according to the present embodiment, and FIG. 9 is an exploded perspective view of FIG. As shown in FIGS. 8 and 9, a coil spring 50 is arranged around each fixing screw 30. When the transmitter 22 that is a fixed object is fixed to the shutter curtain 12 and the seat plate 13 that are fire-proof structures by the fixing screws 30, the coil spring 50 is provided for the shutter curtain 12 and the seat plate 13. When at least a part and at least a part of the transmitter 22 are disposed between each other and the fixing of the transmitter 22 to the shutter curtain 12 and the seat plate 13 by the fixing screw 30 can be released, the shutter curtain 12 and The seat plate 13 and the transmitter 22 can be deformed in a deformation direction (in this embodiment, the Y direction in FIG. 2).

  More specifically, the coil spring 50 is disposed so as to surround each fixing screw 30 so as to be concentric with each fixing screw 30 between the shutter curtain 12 and the seat plate 13 and the transmitter 22. Yes. When the transmitter 22 is fixed to the shutter curtain 12 and the seat plate 13 with the fixing screw 30, the coil spring 50 resists its own elastic force by the fixing force and moves in the axial direction. And is disposed between at least a part of the shutter curtain 12 and the seat plate 13 and at least a part of the transmitter 22. When the fixing of the transmitter 22 to the shutter curtain 12 and the seat plate 13 by the fixing screw 30 can be released, the transmitter 22 is deformed with respect to the shutter curtain 12 and the seat plate 13 by its own elastic force. Energize along the direction. The transmitter 22 is pressed away from the shutter curtain 12 and the seat plate 13 by the urging force, so that the transmitter 22 is detached from the shutter curtain 12 and the seat plate 13. Therefore, even if the side surfaces of the shutter curtain 12 and the seat plate 13 that are to be prevented from spreading are heated, the transmitter 22 can be prevented from being heated by this heat, and the flame shielding performance is prevented from being lowered by the heating of the transmitter 22. can do.

(Effect of Embodiment 3)
According to the fixing structure for the fire prevention structure according to the third embodiment, in addition to the same effects as those of the first and second embodiments, the coil spring 50 is deformed by its own elastic force, so that the transmitter 22 is connected to the shutter curtain 12. And urging in a direction away from the seat plate 13. According to this structure, a required urging force can be easily obtained as compared with the case where the deformable portion 43 is formed in a plate-like body, and the pressing tool 40 is configured by diverting various existing coil springs 50. Is easy.

[Modifications to Embodiments]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention may be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved. For example, even when heating of the fixed object cannot be completely prevented, the degree of heating of the fixed object can be reduced by a means different from the conventional case when the degree of heating of the fixed object can be reduced than before. If it can be reduced, the object of the present invention is achieved.

(About fixing means)
As the fixing means, various means other than the fixing screw 30 can be used. For example, in order to construct the second structure, the transmitter 22 is fixed to the shutter curtain 12 and the seat plate 13 by using a magnet as a fixing means, and the pressing tool 40 is made of a bimetal, a shape memory alloy as described above. Alternatively, a structure using an elastic body and the locking claw 45 may be used as will be described later. When the magnet is heated by a fire and the temperature of the magnet exceeds the Curie point, the magnetic force of the magnet is reduced (including being completely lost), so that the transmitter 22 is fixed to the shutter curtain 12. Can be released. In this state, the pressing force of the pressing tool 40 exceeds the magnetic force (fixing force) of the magnet, and the transmitter 22 can be detached from the shutter curtain 12 by this pressing force. Further, even when the fixing screw 30 is used as the fixing means as in Embodiment 1-3, it is not necessary to completely melt the fixing screw 30 by heat at the time of fire, and at least the fixing force is a pressing tool. What is necessary is just to fuse | melt to such an extent that it becomes less than 40 pressing force.

(Pressing means)
The pressing means does not necessarily have to be deformed. For example, a magnet is fixed to one of the shutter curtain 12 and the seat plate 13, a magnet having a polarity opposite to the magnet is fixed to the transmitter 22, and the transmitter 22 is pressed by the repulsive force of these magnets. Good. However, as described above, when the magnet is heated to the Curie point temperature or higher, the magnetic force of the magnet is reduced. For this reason, it is necessary to use a magnet having a high Curie point temperature and to take measures such as lowering the melting temperature of the fixing screw below the Curie point temperature.

(Pressing means-deformation part-position, shape, or number)
The position, shape, or number of the deformable portion 43 described in the first and second embodiments may be changed.
Regarding the position, for example, in the first and second embodiments, the deformable portion 43 is provided at a position facing the shutter curtain 12 and a position facing the seat plate 13, but either one may be omitted. Thus, when the deformation | transformation part 43 is abbreviate | omitted, about the pressing tool 40, you may abbreviate | omit one of the 1st base board 41 or the 2nd base board 42 corresponding to the said deformation | transformation part 43 which abbreviate | omitted. In the first and second embodiments, the deformable portion 43 is provided integrally with the casing 24 of the transmitter 22, but is fixed to the side surfaces of the shutter curtain 12 and the seat plate 13 that are to be prevented from spreading by welding, screws, or the like. Or may be provided integrally on the side surface of the shutter curtain 12 or the seat plate 13 to be prevented from spreading fire.
Regarding the shape, for example, the direction in which the deformed portion 43 of the first and second embodiments is rotated in the plane along the side surface of the shutter curtain 12 or the seat plate 13 (90 degrees, 180 degrees, 270 degrees, or You may form between these and the angle which the deformation | transformation part 43 becomes diagonal.
Further, regarding the number, for example, in Embodiments 1 and 2, two deformation portions 43 are provided at a position facing the shutter curtain 12 and a position facing the seat plate 13, respectively, but only one is provided. It may be provided, or three or more may be provided.

(Pressing means-deformation part-bimetal)
Or in order to construct | assemble the said 3rd structure, you may form the deformation | transformation part 43 as a bimetal which does not deform | transform by elastic deformation as described in Embodiment 1, 2, but deform | transforms by a temperature change. That is, you may comprise the deformation | transformation part 43 as a plate-shaped object by bonding together the several metal plate from which a thermal expansion coefficient differs. At this time, when the deformation portion 43 is not heated to a predetermined deformation temperature, at least a part of the shutter curtain 12 and the seat plate 13 and at least a part of the transmitter 22 are in a flat plate state. When the deformation part 43 is disposed between them and heated to a predetermined deformation temperature or higher, the deformation part 43 is deformed so as to be deformed in a deformation direction connecting the shutter curtain 12 and the seat plate 13 and the transmitter 22. Set the deformation temperature. This deformation temperature is set to be substantially the same as the melting temperature of the fixing screw 30, and the fixing screw 30 is melted so that the transmitter 22 can be fixed to the shutter curtain 12 and the seat plate 13, and at the same time, the deformation portion 43 is deformed. Then, it is preferable to press the transmitter 22. However, even when the deformation temperature is equal to or lower than the melting temperature of the fixing screw 30, the deformation portion 43 is first heated to the melting temperature to be deformed to start pressing the transmitter 22. At this time, the fixing screw 30 is fixed. When the force exceeds the pressing force, the transmitter 22 is fixed, and after that, when the fixing screw 30 melts and the transmitter 22 can be fixed to the shutter curtain 12 and the seat plate 13, the deformed portion The transmitter 22 may be pressed by 43. Alternatively, even when the deformation temperature is equal to or higher than the melting temperature of the fixing screw 30, the fixing screw 30 is first melted so that the transmitter 22 can be released from the shutter curtain 12 and the seat plate 13. It may be placed on the upper surface of the seat plate 13, and then the deformable portion 43 may be deformed by being heated to the melting temperature to press the transmitter 22. The deforming portion 43 configured as a bimetal is fixed to the first base plate 41 or the second base plate 42 by welding or the like as in the first embodiment, or the transmitter as in the second embodiment. 22 is fixed to the housing 24 by welding or the like. Thus, when the deformation | transformation part 43 is comprised as a bimetal, when the transmitter 22 is fixed, since the deformation | transformation part 43 is not deform | transforming but is flat shape, the transmitter 22 can be easily attached to the shutter curtain 12 and the seat. It can be fixed to the plate 13. Further, when the deformation temperature of the deforming portion 43 is substantially the same as or higher than the melting temperature of the fixing screw 30, the fixing force of the fixing screw 30 may be equal to or less than the pressing force of the deforming portion 43. The rigidity of 30 can be reduced.

(Pressing means-deformation part-shape memory alloy)
Alternatively, in order to construct the third structure, the deforming portion 43 is not deformed by elastic deformation as described in the first and second embodiments, but may be formed of a shape memory alloy. At this time, when the deformable portion 43 is not heated to a predetermined transformation temperature, at least a part of the shutter curtain 12 and the seat plate 13 and at least a part of the transmitter 22 are in a flat state. When the deforming portion 43 is heated between the transformation temperature and higher than the transformation temperature, the memory shape is restored, and the shape is changed by deforming in the deformation direction connecting the shutter curtain 12, the seat plate 13, and the transmitter 22. The memory shape and transformation temperature are determined so as to recover. This transformation temperature is preferably determined in consideration of the melting temperature of the fixing screw 30 in the same manner as the above-described bimetal deformation temperature. Thus, when the deformation | transformation part 43 is comprised with a shape memory alloy, since the deformation | transformation part 43 is not deform | transforming at the time of fixation of the transmitter 22, but is flat, the transmitter 22 is easily made into the shutter curtain 12. And can be fixed to the seat plate 13. In addition, when the transformation temperature of the deforming portion 43 is approximately equal to or higher than the melting temperature of the fixing screw 30, the fixing force of the fixing screw 30 may be equal to or less than the pressing force of the deforming portion 43. The rigidity of 30 can be reduced.

(Pressing means-deformation part-locking claw)
Or in order to construct | assemble the said 3rd structure, the control part which controls the deformation | transformation of the deformation | transformation part 43 may be provided, and this control part may be formed with resin, a bimetal, or a shape memory alloy. For example, as shown in the perspective view of the main part in FIGS. 10 and 11, the first base plate 41 and the second base plate 42 of the pressing tool 40 (only the first base plate 41 is shown in FIGS. 10 and 11). ), The deformation portion 43 is provided as in the first embodiment. Further, the first base plate 41 and the second base plate 42 are provided with locking claws 45 as a restricting portion. The locking claw 45 can be freely engaged with and disengaged from the deformation side end portion of the deformation portion 43 (the end portion of the deformation portion 43 that is farthest from the pressing tool 40 when the deformation portion 43 is deformed). In the first base plate 41 and the second base plate 42, the first base plate 41 and the second base plate 42 are fixed by welding or the like at positions close to the deformation side end of the deformation portion 43 so as to be locked. This locking claw 45 is formed of a resin that melts and deforms when heated, a bimetal that deforms when heated, or a shape memory alloy whose shape recovers when heated, and is in a state before deformation. Then, in the flat state, it is locked to the deformation side end portion of the deformation portion 43 to restrict the deformation of the deformation portion 43. In the state at the time of deformation, the deformation portion 43 is deformed to the deformation side end portion. The locking is released to allow the deformation portion 43 to be deformed. The deformation temperature (resin melting temperature, bimetal deformation temperature, or shape memory alloy transformation temperature) of the locking claw 45 is the same as the bimetal deformation temperature or shape memory alloy transformation temperature according to the above-described modification. It is preferable to determine in consideration of the melting temperature of the fixing screw 30. When the locking claw 45 is provided in this way, even when the deforming portion 43 is formed of an elastic body, the deforming portion 43 is regulated by the locking claw 45 when the transmitter 22 is fixed, and is flat. Therefore, the transmitter 22 can be easily fixed to the shutter curtain 12 and the seat plate 13. Further, when the deformation temperature of the locking claw 45 is substantially equal to or higher than the melting temperature of the fixing screw 30, the fixing force of the fixing screw 30 may be equal to or less than the pressing force of the deformation portion 43. The rigidity of the screw 30 can be reduced.

(Pressing means-coil spring-position or number)
The position, shape, or number of the coil spring 50 described in the third embodiment may be changed.
Regarding the position, for example, in Embodiment 3, the coil spring 50 is provided at a position facing the shutter curtain 12 and a position facing the seat plate 13, but either one may be omitted. Further, the coil spring 50 may be provided independently at a position away from the fixing screw 30 instead of being concentric with the fixing screw 30.
Regarding the number, for example, in the third embodiment, two coil springs 50 are provided at a position facing the shutter curtain 12 and a position facing the seat plate 13, respectively. Alternatively, three or more may be provided.

(Pressing means-coil spring-shape memory alloy)
Alternatively, in order to construct the third structure, the coil spring 50 is not deformed by elastic deformation as described in the third embodiment, and may be formed of a shape memory alloy. At this time, when the coil spring 50 is not heated to a predetermined transformation temperature, at least a part of the shutter curtain 12 and the seat plate 13 and at least the transmitter 22 with a relatively short total length along the axial direction. When the coil spring 50 is disposed between the two and the coil spring 50 is heated to a temperature higher than the transformation temperature, the memory shape is restored and extended along the axial direction, and the shutter curtain 12, the seat plate 13, the transmitter 22, The memory shape and the transformation temperature are determined so as to recover the shape by deforming in the deformation direction connecting the two. This transformation temperature is preferably determined in consideration of the melting temperature of the fixing screw 30 as in the case where the deformed portion 43 is formed of a shape memory alloy.

DESCRIPTION OF SYMBOLS 1 Opening part 2 Guide rail 10 Shutter apparatus 11 Curtain storage part 12 Shutter curtain 20 Shutter obstacle detection system 21 Seat plate switch 22 Transmitter 23 Receiver 24 Case 25 Fixing piece 26 Screw hole 30 Fixing screw 40 Pressing tool 41 1st Base plate 42 Second base plate 43 Deformation portion 44 Opening portion 50 Coil spring

Claims (13)

A fixing structure for fixing a fixed object to a fire prevention structure,
Fixing means for fixing the fixed object to the fire prevention structure;
Pressing means for pressing the fixed object in a direction away from the fire prevention structure,
When the fixing means or the pressing means is heated by heat at the time of fire, the pressing means presses the fixed object with a pressing force equal to or higher than the fixing force by the fixing means;
Fixed structure for fire prevention structure. The fixing means is capable of releasing the fixing of the fixing object to the fire prevention structure by heating the fixing means with heat at the time of a fire,
The pressing means presses the fixed object in a direction away from the fire prevention structure when the fixation by the fixing means of the fixed object to the fire prevention structure can be released.
A fixing structure for the fireproof structure according to claim 1. The pressing means is disposed between at least a part of the fire prevention structure and at least a part of the fixed object, and is deformable in a deformation direction connecting the fire prevention structure and the fixed object. Comprising a deformation part,
A fixing structure for the fire prevention structure according to claim 1 or 2. The deforming portion is a plate-like body formed of an elastic material, and when the fixing object is fixed to the fire prevention structure by the fixing means, the fixing force causes a self-elastic force. On the other hand, when it is maintained in parallel along the non-deformation direction orthogonal to the deformation direction, and the fixation by the fixing means of the fixed object to the fireproof structure can be released, the self-elasticity Deforms in the deformation direction by force,
A fixing structure for the fireproof structure according to claim 3. The deformation part is a plate-like body formed as a bimetal, and when the deformation part is not heated to a predetermined deformation temperature due to heat at the time of a fire, along the non-deformation direction orthogonal to the deformation direction. It is maintained in parallel, and when the deformed part is heated above the deformation temperature by heat at the time of fire, it is deformed in the deformation direction.
A fixing structure for the fireproof structure according to claim 3. The deforming portion is a plate-like body formed of a shape memory alloy, and when the deforming portion is not heated to a predetermined transformation temperature due to heat at the time of a fire, it is in a non-deforming direction orthogonal to the deformation direction. Is maintained in parallel, and when the deformed portion is heated to the transformation temperature or higher due to heat at the time of fire, the memory shape is recovered and deformed in the deformation direction.
A fixing structure for the fireproof structure according to claim 3. The pressing means includes a base plate disposed along a non-deformation direction orthogonal to the deformation direction between the fire prevention structure and the fixed object, and the deformation portion provided on the base plate. ,
The fixing structure for the fire prevention structure according to any one of claims 3 to 6. The deformation portion is provided on a side surface of the fixed object that faces the fire prevention structure.
The fixing structure for the fire prevention structure according to any one of claims 3 to 6. The deformation portion is provided on a side surface of the fire prevention structure that faces the fixed object.
The fixing structure for the fire prevention structure according to any one of claims 3 to 6. The deforming portion is a coil spring, and when the fixed object is fixed to the fireproof structure by the fixing means, the fireproof structure resists its own elastic force by the fixing force. If it is arranged between at least a part of the object and at least a part of the fixed object and the fixing object can be released from the fixing means by the fixing means, the elasticity of its own Urging the fixed object in the deformation direction with respect to the fire prevention structure by force;
A fixing structure for the fireproof structure according to claim 3. The fixing means is a fixing screw for fixing the fixed object to the fireproof structure, and is heated and melted by heat at the time of a fire to fix the fixed object to the fireproof structure. Can be released,
The fixing structure for the fire prevention structure according to any one of claims 2 to 10. The fixing means is a magnet for fixing the fixed object to the fire prevention structure, and is fixed by fixing the fixed object to the fire prevention structure by reducing the magnetic force by being heated by heat at the time of fire. Can be released,
The fixing structure for the fire prevention structure according to any one of claims 2 to 10. A fixed object to be fixed to the fire prevention structure through a fixing means,
A pressing means for pressing the fixed object in a direction away from the fire prevention structure;
A fixed object to be fixed to a fire prevention structure.

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