JP6563217B2 - Shutter fire prevention structure - Google Patents

Description

  The present invention relates to a fire prevention structure for a shutter.

  2. Description of the Related Art Conventionally, a window shutter has a function of preventing the fire flame from entering the building indoor side through a shutter curtain when a fire occurs on the outdoor side of the building. For example, in such a conventional shutter, when the opening is fully closed by the shutter curtain, each end in the width direction of the shutter curtain is an open end of the guide rail provided along the opening / closing direction of the opening. It is inserted into the inside of the guide rail through the part. Also, a part of the front end of the seat plate provided at the end of the shutter curtain in the closing direction side is covered from the outdoor side of the building by a groove formed at the front end of the draining plate provided around the opening. (For example, refer to Patent Document 1). With such a configuration, it is possible to suppress the fire flame from entering the indoor side of the building through the gap between the guide rail and the shutter curtain and the gap between the seat plate and the draining plate.

JP 2008-261154 A

  Here, in order to further improve the fireproof performance of the conventional shutter, it is conceivable to provide a thermal expansion fireproof member on the seat plate. However, for example, when this thermal expansion refractory member is provided over the entire length in the longitudinal direction of the seat plate, the installation amount of the thermal expansion refractory member becomes larger when the overall length in the longitudinal direction of the seat plate becomes longer as the shutter becomes larger. Because of the large amount, there is a problem that the installation cost of the shutter becomes high.

  An object of the present invention is to provide a fire prevention structure for a shutter that can reduce the installation cost while maintaining the fire prevention performance.

In order to solve the above-described problems and achieve the object, the fire prevention structure of the shutter according to claim 1 is a shutter fire prevention structure including a shutter curtain that opens and closes an opening of a building. In order to prevent a flame from entering the indoor side of the building through the shutter when a fire occurs on the outdoor side of the building in the fully closed state of the opening, which is a state in which the opening is fully closed. A fire prevention structure, wherein a seat plate is provided at the front end of the shutter curtain when the shutter curtain is opened and closed so as to close the opening, and the front end portion of the seat plate extends in the closing direction of the shutter curtain. A first projecting portion projecting toward the first projecting portion, and a second projecting portion disposed on the indoor side of the building with respect to the first projecting portion, wherein the shutter curtain is closed A second projecting portion projecting in a direction, and a groove portion located on the indoor side of the building relative to the first projecting portion of the seat plate around the opening portion, the opening portion A cover piece having a groove for covering the second projecting portion of the seat plate from the outdoor side of the building is provided without covering the first projecting portion of the seat plate from the outdoor side of the building in a fully closed state, Of the side surface region of the seat plate, a first region that is a region on the side surface on the indoor side of the building in the first projecting portion and is an end region in a direction along the width direction of the shutter curtain; A region including at least a portion overlapping with the first region when viewed from the prospective direction side among the side surfaces on the outdoor side of the building in the second projecting portion, on the side surface on the indoor side of the building in the seat plate Closure for attached flammable parts Only the area on the opposite side, or the second area which is the area on the closing direction side of the combustible member attached to the indoor side surface of the building on the seat plate and the area near the second area, with the heat of the fire. the Rukoto provided thermal expansion refractory member which expands in a fully closed state the opening, by the thermal expansion refractory member of the first region expanded by the heat of the fire, the one of the groove side piece of the groove first A gap between the first protruding portion and the groove-side piece positioned so as to face each of the first protruding portion and the second protruding portion between the protruding portion and the second protruding portion is blocked. And the gap between the groove-side piece and the second protrusion is closed by the thermal expansion refractory member of the second region expanded by the heat of the fire, so that the entire opening In the closed state, the fire flames are on the indoor side of the building. Intrusion can be suppressed, and the combustible member melted by the heat of the fire can be suppressed from flowing into the closing direction.

The shutter fire prevention structure according to claim 2 is a shutter fire prevention structure including a shutter curtain that opens and closes an opening of a building, and the opening is fully closed by the shutter curtain. A fire prevention structure for preventing a flame from entering the indoor side of the building through the shutter when a fire occurs on the outdoor side of the building in a state, so as to close the opening A seat plate is provided at the front end of the shutter curtain when the shutter curtain is opened and closed, and the seat plate is provided with a recess for a user to hang from the outdoor side of the building. Among the regions, the region of the end portion in the direction along the width direction of the shutter curtain in the tip portion of the seat plate, and the shutter cartridge in the inside of the recess. A first region that is an end region in a direction along the width direction of the first and second regions in the closing direction with respect to the combustible member attached to the indoor side surface of the building in the seat plate, or the seat plate By providing a thermal expansion refractory member that expands with the heat of the fire only in the second region which is a region in the vicinity of the flammable member attached to the indoor side surface of the building and the region in the vicinity thereof, In the fully closed state of the opening, the fire flame can be prevented from entering the indoor side of the building, and the combustible member melted by the heat of the fire can be prevented from flowing into the closing direction. .

The shutter fire prevention structure according to claim 3 is the shutter fire prevention structure according to claim 2 , wherein the front end portion of the seat plate projects in a closing direction of the shutter curtain; A second protrusion disposed on the indoor side of the building with respect to the first protrusion, the second protrusion protruding toward the closing direction of the shutter curtain, and around the opening, A groove located on the indoor side of the building with respect to the first protrusion of the seat plate, for covering the second protrusion of the seat plate from the outdoor side of the building in the fully closed state of the opening. By providing a cover piece having a groove part and providing the thermal expansion refractory member in the second region, the thermal expansion refractory member expanded by the heat of the fire in the opening fully closed state enters the groove part, Heat of the fire Thus the combustible member melted is possible suppressed from flowing in the closing direction.

Fire protection structure of the shutter according to claim 4, in fire structure of the shutter according to any one of claims 1 to 3, wherein the second region is a region adjacent to the combustible member.

According to the fire prevention structure of the shutter according to claim 1, the first region which is the end region in the direction along the width direction of the shutter curtain in the front end portion of the seat plate in the side region of the seat plate; A region in the closing direction with respect to the combustible member attached to the indoor side surface of the building in the seat plate, or a region in the closing direction with respect to the combustible member attached to the indoor side surface of the building in the seat plate, and Since the thermal expansion fireproof member is provided only in the second region, which is the vicinity of the second region, the flame is transmitted through the shutter as compared with the case where the thermal expansion fireproof member is provided over the entire length in the longitudinal direction of the seat plate. Intrusion to the indoor side can be suppressed, and the amount of installation of the thermal expansion refractory member can be reduced. At the same time, compared to the case where the thermal expansion fireproof member is provided over the entire length in the longitudinal direction of the seat plate by installing the thermal expansion fireproof member at a place where the flame is likely to enter the indoor side of the building through the shutter. Thus, the fireproof performance of the shutter can be maintained at the same level. Therefore, it is possible to reduce the installation cost of the shutter while maintaining the fireproof performance of the shutter.
Moreover, since the first region is an end region in the direction along the width direction of the shutter curtain in the front end portion of the seat plate, for example, the seat plate and the guide are provided by a thermal expansion refractory member expanded by the heat of fire. The gap between the rails and the gap between the outside of the building at the groove of the seat plate and draining plate can be closed, so that the fire flames can enter the indoor side of the building through these gaps. Intrusion can be suppressed.
In addition, when the thermally expanded refractory member expanded by the heat of the fire enters the groove portion, the second region can block a portion of the groove portion where the flammable member melted by the heat of the fire may flow. Therefore, the groove portion can be closed by the expanded thermal expansion refractory member. Thereby, it can suppress that the combustible member which burned or fuse | melted falls to a groove part, and flows out outside from the said groove part, and it becomes possible to avoid that the said fire spreads.

According to the fire-proof structure of the shutter according to claim 2, of the side surface region of the seat plate, the end region in the direction along the width direction of the shutter curtain in the tip portion of the seat plate, and the inside of the recess Of these, the first region, which is the end region in the direction along the width direction of the shutter curtain, and the region on the closing direction side of the combustible member attached to the side surface on the indoor side of the building on the seat plate, or the building on the seat plate Since the thermal expansion refractory member is provided only in the second region which is the region on the closing direction side of the combustible member attached to the side surface on the indoor side and the region in the vicinity thereof, over the entire length in the longitudinal direction of the seat plate Compared with the case where a thermal expansion refractory member is provided, flames can be prevented from entering the indoor side of the building through the shutter, and the amount of installation of the thermal expansion refractory member can be reduced. At the same time, compared to the case where the thermal expansion fireproof member is provided over the entire length in the longitudinal direction of the seat plate by installing the thermal expansion fireproof member at a place where the flame is likely to enter the indoor side of the building through the shutter. Thus, the fireproof performance of the shutter can be maintained at the same level. Therefore, it is possible to reduce the installation cost of the shutter while maintaining the fireproof performance of the shutter.
In addition, since the first region is an end region in the direction along the width direction of the shutter curtain among the front end portions of the seat plate, for example, at least the seat plate and the thermal expansion fireproof member expanded by the heat of fire. Since the gap between the guide rail and the guide rail can be closed, it is possible to prevent the fire flame from entering the indoor side of the building through the gap. Moreover, since the first region is an end region in the direction along the width direction of the shutter curtain in the interior of the recess, the internal space of the recess can be blocked by a thermally expanded refractory member expanded by the heat of the fire. Therefore, it is possible to suppress a fire flame from entering the indoor side of the building through the internal space.

According to the fireproof structure of the shutter according to claim 3 , the second region has a combustible member melted by the heat of the fire in the groove portion when the thermally expanded fire-resistant member expanded by the heat of the fire enters the groove portion. Since it is an area | region where it is possible to block the part which may flow in, a groove part can be plugged up with the expanded thermal expansion fireproof member. Thereby, it can suppress that the combustible member which burned or fuse | melted falls to a groove part, and flows out outside from the said groove part, and it becomes possible to avoid that the said fire spreads.

It is a shutter which concerns on Embodiment 1 of this invention, Comprising: It is a figure which shows an opening part closed state, (a) is a front view, (b) is a right view. It is AA arrow sectional drawing of the shutter of FIG. FIG. 3 is an enlarged view of a lower region in FIG. 2. It is BB arrow sectional drawing of FIG. It is a figure which shows a seat board, (a) is a rear view, (b) is a top view, (c) is a right view. FIG. 6 is an enlarged view of FIG. It is a figure which shows the draining board, (a) is a front view, (b) is a top view, (c) is a right view. It is a figure which shows the condition of the shutter when a fire has occurred on the outdoor side of a building in the fully closed state of the opening, and is a figure showing a region corresponding to FIG. It is a figure which shows the fire prevention structure of the shutter which concerns on Embodiment 2, Comprising: It is a figure which shows the area | region corresponding to FIG. It is a figure which shows a seat board, (a) is a rear view, (b) is a top view, (c) is a right view. It is an enlarged view of FIG.10 (c). FIG. 10 is a diagram illustrating a state of a shutter when a fire occurs on the outdoor side of a building in the fully closed state of the opening, and illustrates a region corresponding to FIG. 9.

  Embodiments of a fire prevention structure for a shutter according to the present invention will be described below in detail with reference to the accompanying drawings. First, [I] the basic concept of the embodiment will be described, then [II] the specific content of the embodiment will be described, and finally, [III] a modification to the embodiment will be described. However, the present invention is not limited to the embodiments.

[I] Basic Concept of Embodiment First, the basic concept of the embodiment will be described. The embodiment is generally a fire prevention structure of a shutter including a shutter curtain that opens and closes an opening of a building, and a state in which the opening is fully closed by the shutter curtain (hereinafter referred to as an “opening fully closed state”). This relates to a fire prevention structure for preventing a flame from entering the indoor side of the building through a shutter when a fire occurs on the outdoor side of the building.

  Here, the “building” may have any specific structure and type, but includes a concept including a detached house, an apartment house such as an apartment or an apartment, an office building, a commercial facility, and a public facility, for example. . Further, the “building opening” is an opening formed to install a window or an entrance in a part of the building frame (for example, a wall, a ceiling, or a floor). The “shutter” is a winding door that is attached to an opening of a building for crime prevention or fire prevention, and has a concept including, for example, a window shutter, a lightweight shutter, and a heavy shutter. The shutter opening / closing structure is arbitrary, and can be configured as, for example, a “upper / lower opening / closing shutter” or a “left / right opening / closing shutter”. The shutter driving method is arbitrary, and can be configured as, for example, a “manual shutter” or an “electric shutter”. Further, “fire prevention” means that a fire that has occurred on either the outdoor side or the indoor side of the building is prevented from spreading toward either the outdoor side or the indoor side of the building. Hereinafter, in the embodiment, a case will be described in which the shutter is a vertically openable / closable and electrically operated window shutter disposed on a wall of a building such as a detached house and having a window.

[II] Specific Contents of Embodiment Next, specific contents of the embodiment will be described.

[Embodiment 1]
First, the fire prevention structure of the shutter according to the first embodiment will be described. This Embodiment 1 is a form which provided the thermal expansion fireproof member only in the 1st area | region and 2nd area | region which are mentioned later among the area | regions of the side surface of a seat board.

(Constitution)
First, the configuration of the shutter to which the fire prevention structure of the shutter according to the first embodiment is applied will be described. 1A and 1B are diagrams illustrating a shutter according to Embodiment 1 of the present invention, in which the opening is fully closed, where FIG. 1A is a front view, FIG. 1B is a right side view, and FIG. FIG. 3 is an enlarged view of the lower region of FIG. 2, and FIG. 4 is a cross-sectional view taken along the line BB in FIG. 1. In the following description, the X direction in FIG. 1 is the left-right direction or width direction of the shutter (−X direction is the left direction of the shutter, + X direction is the right direction of the shutter), and Y direction in FIG. The + Y direction is the forward direction of the shutter (the direction on the outdoor side of the building), the −Y direction is the backward direction of the shutter (the direction on the indoor side of the building), and the Z direction in FIG. 1 is the vertical direction of the shutter (the + Z direction is the direction of the shutter) The upward direction and the −Z direction are referred to as the shutter downward direction). 3, illustration of a part of the locking device 33 is omitted (the same applies to FIG. 8 described later). 3 and 4, a first intrusion route R1 described later and a second intrusion route R2 described later are indicated by imaginary lines.

  As shown in FIGS. 1 and 2, the shutter 1 is generally configured to include a frame body 10, a shutter storage unit 20, a shutter curtain 30, an opening / closing device 40, and a winding shaft 50. ing. The shutter 1 is a window shutter as described above. As shown in FIG. 1, a window (not shown) is provided in the opening 3 formed in the housing 2 of the building. A shutter curtain 30 is provided on the outdoor side of the window. For this reason, the shutter curtain 30 opens and closes the opening 3 not on the opening surface of the opening 3 but on the outdoor side of the opening surface of the opening 3. Since it is the same in that the opening and closing for restricting the entry and exit of a person or an object through the opening 3 is performed, it will be described as “opening and closing the opening 3”. However, since a known open / close sash window or the like can be adopted as the window, the description thereof is omitted. In addition, although the attachment method (or connection method) of the various members which comprise the shutter 1 mentioned later is arbitrary, for example, the attachment hole (for example, rivet hole) formed in the member of the attachment side or the member of the attachment other side A method of attaching (or connecting) a member on the attachment side to a member on the attachment counterpart side by a fixture (eg, rivet, attachment screw, screw, etc.) via a screw hole, a screw hole, etc. Yes. However, the method is not limited to this, and for example, a method of attaching (or connecting) the attachment-side member to the attachment-partition side member by caulking a part of the attachment-partition side member may be employed.

(Configuration-frame)
The frame body 10 is provided in the opening 3 formed in the housing 2 of the building. The frame 10 is configured by combining a plurality of frame members with each other. Specifically, the plurality of frame members include a left vertical frame 80 (support frame member), a right vertical frame 81 (support frame member), and a draining plate 70. The left vertical frame 80, the right vertical frame 81, and the draining plate 70 are directly fixed to the outer surface of the building housing 2 at the periphery of the opening 3 by a known method. Note that the left vertical frame 80 and the right vertical frame 81 are simply collectively referred to as “vertical frame 82” when it is not necessary to distinguish between them.

  Each of the left vertical frame 80 and the right vertical frame 81 is provided with a guide rail 13. The guide rail 13 guides the shutter curtain 30 so as to move along the opening / closing direction (that is, the vertical direction) of the opening 3. This guide rail 13 is a long body formed so that the cross-sectional shape is substantially U-shaped, and the front surface of the left vertical frame 80 and the right vertical frame 81 (that is, the outer surface of the building housing 2) The guide rail 13 is arranged so that the vertical direction (longitudinal direction) of the guide rail 13 is substantially along the vertical direction (longitudinal direction) of each of the left vertical frame 80 and the right vertical frame 81, and is fixed to the left vertical frame 80 and the right vertical frame 81. It is fixed with tools. The guide rail 13 is formed with a housing frame 14 for securing a region for housing the chain 41 that connects the switch 40 and the winding shaft 50 above the opening. The housing frame 14 is a hollow triangular prism having an internal space in which the chain 41 can be housed. The housing frame 14 is formed over the entire length of the guide rail 13 in the vertical direction. It is arranged so as to project outward.

(Configuration-shutter storage)
The shutter storage unit 20 is a hollow body for storing each part of the shutter 1 and is attached to a position near the upper end of the opening 3 in the building. Inside the shutter housing portion 20, an opening / closing device 40 and a winding shaft 50 are housed. Further, in a state where the shutter curtain 30 is wound around the winding shaft 50, at least a part of the shutter curtain 30 is also housed inside the shutter housing portion 20 (in FIG. 2, the opening 3 is fully opened). In this state, the outer edge of the shutter curtain 30 wound by the winding shaft 50 is indicated by a two-dot chain line). The shutter storage portion 20 can be formed, for example, by connecting a plurality of bent plate members made of steel to each other with a fixture.

(Configuration-shutter curtain)
The shutter curtain 30 is wound or unwound by the winding shaft 50 so that the opening 3 is fully opened, the opening 3 is fully closed (that is, the opening fully closed), or the half open state. It is the shielding means to do. As shown in FIGS. 2 and 3, the shutter curtain 30 includes a plurality of slats 30a, and fitting portions 30b are provided at both upper and lower ends of each slat 30a. The fitting portions 30b are provided at both upper and lower end portions of each slat 30a in order to fit and connect the plurality of slats 30a to each other, and are formed by bending the both end portions. Further, both end portions in the left and right direction (longitudinal direction) of the shutter curtain 30 are inserted into the guide rail 13 through the U-shaped open end portions of the guide rail 13, and in the up and down direction, The inside of the guide rail 13 is slidable and is regulated so as not to drop out of the guide rail 13 in the front-rear direction.

  A seat plate 31 is provided at the lower end of the shutter curtain 30. 5A and 5B are views showing the seat plate 31, wherein FIG. 5A is a rear view, FIG. 5B is a plan view, FIG. 5C is a right side view, and FIG. 6 is an enlarged view of FIG. The seat plate 31 is disposed so as to be close to or in contact with the draining plate 70 of the frame 10 in the fully closed state of the opening, and is formed over the entire length in the left-right direction of the lower end portion of the shutter curtain 30. Yes. A fitting portion 32 is provided at the upper end portion of the seat plate 31, and the fitting portion 32 is fitted into the fitting portion 30 b at the lower end portion of the lowermost slat 30 a of the shutter curtain 30, thereby A plate 31 is attached to the shutter curtain 30. Further, a locking device 33 and a stopper 34 are provided on the side surface of the seat plate 31.

  The locking device 33 is locking means for locking the shutter curtain 30. The locking device 33 is mounted between a pair of mounting pieces 65 and 66 of a seat plate 31 to be described later, and is a hollow box-shaped housing formed of a combustible member (for example, resin, the same applies hereinafter). A pair of steel-made latch bars 33c arranged on the body in the left-right direction, and a latch 33a provided at an outer end in the left-right direction of the latch bar 33c, the latch 33a covered with a combustible member; An operation lever 33b covered with a combustible member is provided. Then, when the user performs a predetermined operation via the operation lever 33b, the shutter 33 can be locked by locking the latch 33a to a latch receiving portion (not shown) inside the guide rail 13.

  The stopper 34 is a regulating unit that abuts the shutter storage unit 20 and regulates the rise of the shutter curtain 30. The stopper 34 is provided in the vicinity of each of the left and right ends of the seat plate 31 and is a substantially U-shaped member formed of a combustible member. It is fixed via a fixing tool.

(Configuration-Switch)
In FIG. 2, the opening / closing device 40 is an elevating means that elevates and lowers the shutter curtain 30 electrically by rotating the winding shaft 50, and is operated via an operation switch or a remote controller (not shown).

(Configuration-winding shaft)
The take-up shaft 50 is an elevating unit that raises and lowers the shutter curtain 30 by winding or unwinding the shutter curtain 30. The take-up shaft 50 is disposed along the left-right direction (longitudinal direction) of the shutter housing portion 20, and a connecting slat (not shown) connected to the upper end of the shutter curtain 30 is connected to the take-up shaft 50. The shutter curtain 30 can be wound or unwound through the connecting slats by rotating the winding shaft 50. However, since the winding shaft 50 can be constituted by, for example, a known winding shaft, a detailed description thereof is omitted.

(Configuration-shutter curtain-details of the seat plate configuration)
Next, details of the configuration of the seat plate 31 of the shutter curtain 30 will be described. However, the seat plate 31 can be manufactured in an arbitrary shape, method, and material unless otherwise specified. In the first embodiment, as shown in FIGS. 3 to 6, the seat plate 31 includes a main body piece 60, a first protruding portion 61, a second protruding portion 62, a connecting portion 63, a notch portion 64, and an attachment piece. 65 and 66 are provided. Among these, the main body piece 60 is a basic structure of the seat plate 31. The main body piece 60 is formed over the entire length of the shutter curtain 30 in the left-right direction (longitudinal direction), and is disposed so as to be substantially along the vertical direction. The first projecting portion 61 projects in the left-right direction of the shutter curtain 30 so as to project from the tip portion of the main body piece 60 (that is, the lower end portion of the main body piece 60) in the closing direction (that is, downward) of the shutter curtain 30. Is formed over the entire length. The tip of the first protrusion 61 is formed so as to be turned toward the indoor side of the building. The 2nd protrusion part 62 protrudes toward the closing direction (namely, downward direction) of the shutter curtain 30, and the 3rd groove | channel side piece 73c of the groove part 73 mentioned later of the draining board 70 in an opening part fully closed state. And is disposed closer to the indoor side of the building than the first protrusion 61. The connecting portion 63 is for connecting the first protruding portion 61 and the second protruding portion 62, and is formed so as to extend from the upper end portion of the first protruding portion 61 to the upper end portion of the second protruding portion 62. Yes. The notches 64 are formed at the left and right ends of the second projecting portion 62 and the connecting portion 63 and in the vicinity thereof. Thus, by providing the notches 64 in this way, the opening portion is fully closed. 2 The protrusion 62 and the connection 63 are prevented from interfering with the guide rail 13. The attachment pieces 65 and 66 are for attaching to the seat plate 31 by sandwiching the locking device 33, and are formed so as to project from the side surface on the indoor side of the main body piece 60 toward the indoor side.

(Configuration-frame-details of draining plate configuration)
Next, the detail of the structure of the draining board 70 of the frame 10 is demonstrated. 7A and 7B are views showing the draining plate 70, where FIG. 7A is a front view, FIG. 7B is a plan view, and FIG. 7C is a right side view. However, the draining board 70 can be manufactured by arbitrary shapes, methods, and materials, unless otherwise specified. The draining plate 70 is a cover piece that covers at least a part of the seat plate 31, and includes a draining plate main body 71 and a rising piece 72 as shown in FIGS. 3, 4, and 7. Among these, the draining plate main body 71 is a basic structure of the draining plate 70. The draining plate body 71 is formed over a range from the housing frame 14 of the left guide rail 13 to the housing frame 14 of the right guide rail 13. Moreover, this draining board main body 71 is arrange | positioned so that it may protrude toward the outdoor side of the building from the peripheral lower part of the opening part 3 of a building, and in order to make the draining board main body 71 function as a draining surface specifically ,. In addition, it is arranged to incline downward as it goes from the indoor side of the building to the outdoor side of the building. A groove 73 is formed in the front end portion of the draining plate main body 71 and in the vicinity thereof. The groove part 73 is for covering the 2nd protrusion part 62 of the seat board 31 in an opening part fully closed state from the outdoor side of a building. The groove 73 is formed in a U-shape with a longitudinal section projecting downward. Specifically, as shown in FIG. 7, the first groove side piece 73a located on the indoor side of the building and The second groove side piece 73b located on the outdoor side of the building, and the third groove side piece 73c located between the first groove side piece 73a and the second groove side piece 73b (on the bottom portion of the groove part 73) Equivalent). Among these, the 1st groove side piece 73a is located in the indoor side of a building rather than the 2nd protrusion part 62 of the seat board 31, and the 2nd groove side piece 73b is the outdoor side of a building rather than the 2nd protrusion part 62. The groove part 73 is arrange | positioned so that it may be located in. Further, the draining plate 70 and a second connecting portion 85 (described later) of the vertical frame 82 do not come into contact with the left and right end portions of the second groove side piece 73b and the third groove side piece 73c and the vicinity thereof. Thus, a notch 74 is formed. The rising piece 72 is formed so as to protrude upward from the rear end portion of the draining plate main body 71. The rising piece 72 is attached with a watertight material 76 (for example, a resin packing or the like) for preventing water from entering a gap between the rising piece 72 and the building. The draining plate 70 configured in this way can be manufactured by any method and material, and for example, can be manufactured by extrusion molding of aluminum.

(Configuration-frame-details of vertical frame configuration)
Next, details of the configuration of the vertical frame 82 of the frame 10 will be described. However, the vertical frame 82 can be manufactured in an arbitrary shape, method, and material unless otherwise specified. The vertical frame 82 is a support means for supporting the draining plate 70 and the guide rail 13. As shown in FIGS. 3 and 4, the vertical frame main body 83, the first connection portion 84, and the second connection portion 85 are provided. It is configured with. Among these, the vertical frame main body 83 is a basic structure of the vertical frame 82, and protrudes from the lower periphery of the opening 3 of the building toward the outdoor side of the building at each end in the left-right direction of the draining plate 70. And a fixing tool for the draining plate main body 71 through an attachment hole (not shown) formed in the vertical frame main body 83 and an attachment hole 71a formed in the draining plate main body 71 of the draining plate 70. Connected by. Further, a fitting portion 83 a is formed at the front end portion of the vertical frame body 83. The fitting portion 83 a is a connecting means for connecting the vertical frame 82 to the guide rail 13, and is fitted and connected to the fitting portion 14 a formed on the housing frame 14 of the guide rail 13. Moreover, the 1st connection part 84 is a connection means which connects the vertical frame 82 and a building. The first connection portion 84 is formed so as to protrude from the rear end portion of the vertical frame main body 83 toward the left and right outer sides of the shutter curtain 30, and an attachment hole (not shown) formed in the first connection portion 84. ) And an attachment hole (not shown) formed in the building. The second connection portion 85 is connection means for connecting the vertical frame 82 and the guide rail 13. The second connection portion 85 is formed so as to protrude from the vicinity of the front end portion of the vertical frame body 83 toward the inner side in the left-right direction of the shutter curtain 30, and an attachment hole formed in the second connection portion 85. (Not shown) and an attachment hole (not shown) formed in a connection piece 14b provided in the housing frame 14, the fixture is connected to the housing frame 14. The vertical frame 82 configured as described above can be manufactured by any method or material, and for example, can be manufactured by extrusion molding of aluminum.

(Configuration-shutter fire prevention structure)
Next, the fire prevention structure of the shutter 1 will be described. FIG. 8 is a diagram illustrating a state of the shutter 1 when a fire occurs on the outdoor side of the building in the fully closed state of the opening, and is a diagram illustrating a region corresponding to FIG. 3. As shown in FIG. 8, the shutter 1 includes a fire prevention structure for preventing a flame from entering through the shutter 1 when a fire occurs on the outdoor side of the building in the fully closed state of the opening. ing. Further, this fire prevention structure includes a fire prevention structure of the seat plate 31, a fire prevention structure of the guide rail 13, and a fire prevention structure of the draining plate 70. Below, each of these fire prevention structures is demonstrated one by one.

(Configuration-Fire-proof structure of shutter-Fire-proof structure of seat plate)
First, the fire prevention structure of the seat plate 31 will be described. As shown in FIGS. 3, 5, 6, and 8, as a fire prevention structure for preventing a fire flame generated on the outdoor side of the building from entering the indoor side of the building through the seat plate 31, Thermal expansion refractory members 90 a and 90 b are provided on the side surface of the seat plate 31. Below, the fire prevention structure of this seat board 31 is demonstrated. In addition, when it is not necessary to distinguish these thermal expansion refractory members 90a and 90b, they are simply collectively referred to as “thermal expansion refractory member 90”.

  The thermal expansion refractory members 90a and 90b are formed in a long plate shape, and are, for example, known thermal expansion refractories that foam by being heated at a predetermined temperature (specifically, a temperature of 150 ° C. to 250 ° C.). A member (specifically, FiBlock (registered trademark) or the like) is used, and is fixed to the seat plate 31 with a double-sided tape, an adhesive, or a fixture.

  These thermal expansion refractory members 90 a and 90 b are arranged only in a predetermined region on the side surface of the seat plate 31. Here, the “predetermined region on the side surface of the seat plate 31” is a concept including a “first region” and a “second region”. Among these, the “first region” is a region of the side surface of the seat plate 31 where the flame of the fire may enter the indoor side of the building when the opening is fully closed. Further, the “second region” refers to a closing direction side (downward side in the present embodiment) with respect to the locking device 33 and the stopper 34 attached to the side surface of the seat plate 31 on the indoor side of the building in the fully closed state. ) Region (hereinafter referred to as “second lower region”), or a region in which the locking device 33 and the stopper 34 melted by the heat of the fire may flow into the groove 73 of the draining plate 70 (hereinafter referred to as “second inflow”). (Referred to as “region”).

  More specifically, the “first region” is a region of an end portion in the direction along the width direction of the shutter curtain 30 in the front end portion of the seat plate 31 (that is, the lower left end and the right end on the lower side of the seat plate 31). (Hereinafter referred to as “first tip region”), and a thermal expansion refractory member 90a is provided over the entire first tip region. Although a more specific determination method of the “first tip region” is arbitrary, for example, the first projecting portion 61 of the seat plate 31 and a rail cap 100 to be described later are formed by a thermal expansion refractory member 90a expanded by heat of fire. And the gap between the seat plate 31 and the side surface along the vertical direction of the guide rail 13 can be closed to such an extent that it is difficult for the flame to enter. Can be determined. However, such a region can be determined depending on the expansion rate, thickness, etc. of the thermal expansion refractory member 90a, and can be determined by experiments or the like. In the present embodiment, the vertical length (height) of the thermal expansion refractory member 90a is set substantially the same as the vertical length (height) of the first protrusion 61, and the thermal expansion refractory member The length (width) of 90a in the left-right direction is set to be approximately the same as the length in the left-right direction of the portion of the seat plate 31 that overlaps the installation area of a rail cap 100 described later. Such a thermal expansion fireproof member 90a is arranged on the indoor side surface of the front end portion of the seat plate 31 so as to reach the inner side in the left-right direction starting from the extreme end in the direction along the width direction of the shutter curtain 30. doing. By disposing the thermal expansion refractory member 90a in the first region in this manner, as shown in FIGS. 3 and 4, the fire flame (or heat) generated on the outdoor side of the building is caused by the first intrusion route R1 or the first intrusion route R1. It becomes possible to suppress entering the indoor side of a building via 2 intrusion route R2. Here, the “first intrusion route R1” refers to a gap between the first protrusion 61 and the base member 101 from the outdoor side of the building, and between the first protrusion 61 and the second groove side piece 73b. And a route entering the indoor side of the building via the gap between the guide rail 13 and the stopper 34. In addition, the “second intrusion route R2” refers to a gap between the first protrusion 61 and the second groove side piece 73b from the outdoor side of the building and a gap between the guide rail 13 and the stopper 34. It is a route that enters the indoor side of the building via.

  More specifically, the “second lower area” of the “second area” is an area located on the lower side of the locking device 33 or the stopper 34 in the indoor side surface area of the seat plate 31. Yes, a thermal expansion refractory member 90b is installed in the entire region of the second lower region. Although the more specific determination method of this “second lower region” is arbitrary, for example, in the region partitioned by the second groove side piece 73b of the groove 73 and the first protrusion 62, below the locking device 33. By closing the region located on the side and the region adjacent to the lower side with respect to the stopper 34 with the thermal expansion refractory member 90b expanded by the heat of the fire, the fire spreads to the inside of the building than these regions. It can be determined so that it can be suppressed. However, such a region can be determined according to an experiment or the like because it can vary depending on the expansion rate and thickness of the thermal expansion refractory member 90b. In the present embodiment, the vertical length (height) of the thermal expansion refractory member 90b is set to about half of the vertical length (height) of the second protrusion 62, and the thermal expansion refractory member 90b. The length (width) in the left-right direction of the member 90b is set to be approximately the same as the length (width) in the left-right direction of the locking device 33 and the stopper 34. Such a thermal expansion refractory member 90b is formed as a second protrusion. On the side surface on the outdoor side of the part 62, it is arranged at a position corresponding to the lower side of the locking device 33 or the stopper 34.

  More specifically, the “second inflow region” of the “second region” means that the thermally expanded refractory member 90 b expanded by the heat of the fire enters the groove portion 73 of the draining plate 70, thereby Of these, it is an area where it is possible to block a portion where the locking device 33 and the stopper 34 melted by the heat of the fire may flow, and the thermal expansion refractory member 90b is installed in the entire area of the second inflow area. . A more specific determination method of the “second inflow region” is arbitrary. For example, among the groove portions 73 of the draining plate 70, the locking device 33 or the stopper 34 that is burned or melted by the heat of the fire is placed in the groove portion 73. The portion that may fall and flow in the left-right direction is closed by a thermal expansion refractory member 90b expanded by the heat of the fire, so that the locked or melted locking device 33 or stopper 34 falls into the groove 73. Then, it can be determined so that it can be suppressed from flowing out of the groove 73 toward the outside in the left-right direction. However, such a region can be determined according to an experiment or the like because it can vary depending on the expansion rate and thickness of the thermal expansion refractory member 90b. In the present embodiment, the vertical length (height) of the thermal expansion refractory member 90b is set to about half of the vertical length (height) of the second protrusion 62, and the thermal expansion refractory member 90b. When the length (width) of the member 90b in the left-right direction is equal to the length (width) of the locking device 33 or the stopper 34 in the left-right direction, the locking device 33 or the stopper 34, which has been burned or melted, falls into the groove portion 73 and is The length is set such that it can be prevented from flowing out of the groove 73 toward the outside, and such a thermal expansion refractory member 90b is provided on the side surface of the second projecting portion 62 on the outdoor side. Or it arrange | positions along the left-right direction centering on the position corresponding to the downward direction of the stopper 34. FIG.

  When the first region and the second region partially overlap each other, only one of the thermal expansion refractory member 90a and the thermal expansion refractory member 90b may be disposed in the overlapping portion, Or you may arrange | position so that both the thermal expansion refractory member 90a and the thermal expansion refractory member 90b may superpose | polymerize. Alternatively, when the second lower region of the second region and the second inflow region partially overlap each other, the thermal expansion refractory member 90b may be arranged in a single layer in the overlapping portion, or double You may arrange in. In the present embodiment, since the second lower region and the second inflow region overlap with each other below the locking device 33 or the stopper 34, the thermal expansion refractory member 90b is placed on the overlapping portion. Is arranged. More specifically, the thermal expansion refractory member 90b disposed in the second lower region and the thermal expansion refractory member 90b disposed in the second inflow region are integrally formed as a seamless thermal expansion refractory member 90b connected to each other. ing.

(Configuration-Shutter fire prevention structure-Guide rail fire prevention structure)
Next, the fire prevention structure of the guide rail 13 will be described. As shown in FIGS. 3, 4, and 8, a rail cap 100 is used as a fire prevention structure for preventing a fire flame generated on the outdoor side of the building from entering the indoor side of the building through the guide rail 13. The thermal expansion fireproof member 110 and the thermal expansion fireproof member 140 are provided.

  First, the rail cap 100 will be described. The rail cap 100 is a covering means for covering a part of the guide rail 13 and includes a base member 101 and a fire prevention member 102. Among these, the base member 101 is a base piece for covering the end of the guide rail 13 on the closing direction side (that is, the lower end of the guide rail 13). The base member 101 is formed in a substantially plate shape, and includes a lower end portion of the guide rail 13 and a peripheral portion thereof (for example, a left end portion (or right end portion) of the draining plate 70 and a vicinity thereof, a receiving frame of the guide rail 13. 14 etc.) is arranged so as to cover the area from the lower side. Then, the base member 101 is attached to the draining plate 70 through an attachment hole 73d formed in the third groove side piece 73c of the groove 73 in the draining plate 70 and an attachment hole (not shown) formed in the base member 101. Connected by a fixture.

  Further, the fire prevention member 102 is a fire prevention piece for covering an inner side surface that is located on the indoor side of the building with respect to the shutter curtain 30 among the inner side surfaces that face the shutter curtain 30 among the side surfaces of the guide rail 13. is there. The fire prevention member 102 is formed in a substantially plate shape, and is provided in the guide rail 13 so as to protrude upward from the base member 101. An attachment hole ( It is connected to the guide rail 13 by a fixture via a mounting hole (not shown) formed on the side surface of the guide rail 13 (not shown). The installation position of the fire prevention member 102 is arbitrary, but in the first embodiment, when the fire flame generated on the outdoor side of the building flows into the guide rail 13, the fire prevention member 102 causes the guide rail 13 to be installed. It is installed so that it can suppress that the said flame penetrate | invades into the inside of a building through the clearance gap between the rail cap 100 and the rail. Specifically, as shown in FIG. 4, the lower part of the inner surface located on the indoor side of the building relative to the shutter curtain 30 among the inner surfaces that are the side surfaces facing the shutter curtain 30 among the side surfaces of the guide rail 13. In addition, it is installed so as to cover the lower part of the inner surface located on the outdoor side of the building relative to the shutter curtain 30 and the lower part of the inner surface perpendicular to the left-right direction.

  The rail cap 100 can be manufactured from any material. For example, from the viewpoint of protecting the guide rail 13 from a fire flame by the rail cap 100, it is preferable that the rail cap 100 be a material having fire resistance. For general manufacturing needs, a material that can reduce manufacturing costs is preferable. For this reason, in the first embodiment, a stainless steel material is adopted as the material of the rail cap 100. Or it is not restricted to this, For example, materials, such as steel materials and a fireproof fiber, may be employ | adopted.

  Next, the thermal expansion refractory member 110 will be described. The thermal expansion refractory member 110 is for closing a gap between the guide rail 13 and the base member 101 of the rail cap 100. The thermal expansion refractory member 110 is a long plate-like body, and is configured using a known thermal expansion refractory member. The side surface of the thermal expansion refractory member 110 is in contact with the upper surface of the base member 101. It is arranged and fixed to this base member 101 with a double-sided tape, an adhesive or the like.

  Further, although the details of the installation position of the thermal expansion refractory member 110 are arbitrary, in the first embodiment, the thermal expansion refractory member 110 is installed in the gap between the base member 101 of the rail cap 100 and the guide rail 13 or in the vicinity thereof. ing. Specifically, the thermal expansion refractory member 110 includes an end portion of the thermal expansion refractory member 110 on the outdoor side of the building that is sandwiched in a gap between the base member 101 and the guide rail 13, and the thermal expansion refractory member 110. The portion other than the end portion on the outdoor side of the building is installed so as to be sandwiched between the base member 101 and the third groove side piece 73c of the groove portion 73 of the draining plate 70 (that is, thermal expansion). The refractory member 110 is installed horizontally). Thereby, since the space between the guide rail 13 and the base member 101 can be closed by the thermal expansion refractory member 110 that is expanded by the heat of the fire, the flame of the fire enters the indoor side of the building through the space. Can be suppressed.

  Next, the thermal expansion refractory member 140 will be described. The thermal expansion refractory member 140 is for closing the internal space of the guide rail 13. The thermal expansion refractory member 140 is a long plate-like body, and is configured using a known thermal expansion refractory member, and the side surface of the thermal expansion refractory member 140 is a part of the inner side surface of the guide rail 13 of the building. It arrange | positions so that it may contact | abut with the inner side surface of an indoor side, and either the upper end part or the lower end part of the said thermal expansion fireproof member 140 is caulked by the guide rail 13. FIG. Moreover, although it is arbitrary about the installation position of this thermal expansion fireproof member 140, in Embodiment 1, specifically, it shows in FIG. 4 so that the thermal expansion fireproof member 140 can be expanded effectively. As described above, the guide rail 13 is installed on the inner side of the building on the indoor side. Such an installation can further suppress the inflow of fire flames from the gap between the guide rail 13 and the shutter curtain 30.

  With such a fire prevention structure, when a fire flame generated on the outdoor side of the building flows into the inside of the guide rail 13, the fire prevention member 102 makes the building out of the inner surface of the guide rail 13 than the shutter curtain 30. Since the inner surface located on the indoor side is shielded from the fire flame, it is possible to suppress the fire flame from entering the indoor side of the building through the gap between the guide rail 13 and the rail cap 100. In addition, since the thermal expansion refractory member 110 expanded by the heat of the fire can close the gap between the guide rail 13 and the base member 101 of the rail cap 100, the flame of the fire is transmitted through the gap. Intrusion to the indoor side can be suppressed. Further, since the thermal expansion refractory member 140 expanded by the heat of the fire can close the gap between the guide rail 13 and the shutter curtain 30, the gap and the gap between the guide rail 13 and the base member 101 can be closed. Fire flames can be prevented from entering the indoor side of the building through the gap. From the above, the fireproof performance of the shutter 1 can be further improved.

(Configuration-Fire prevention structure of shutter-Fire prevention structure of draining board)
Next, the fire prevention structure of the draining plate 70 will be described. As shown in FIGS. 3, 4, 7, and 8, a fire flame generated on the outdoor side of the building is caused by a gap between the draining plate 70 and the second connection portion 85 of the vertical frame 82. A thermal expansion fireproof member 120 is provided as a fireproof structure for preventing intrusion into the inside. Below, the fire prevention structure of this draining board 70 is demonstrated.

  This thermal expansion refractory member 120 is for closing a gap between the notch 74 and the second connecting portion 85 of the draining plate 70. The thermal expansion refractory member 120 is a rectangular plate-like body, and is configured using a known thermal expansion refractory member. The side surface of the thermal expansion refractory member 120 is the first groove of the groove 73 of the draining plate 70. It arrange | positions so that it may contact | abut with the side piece 73a, and is being fixed with the double-sided tape, the adhesive agent, etc. with respect to the said side surface. Further, although the installation position of the thermal expansion refractory member 120 is arbitrary, in the first embodiment, a fire flame generated on the outdoor side of the building is caused between the notch portion 74 and the second connection portion 85. It is arrange | positioned so that it can suppress entering the indoor side of a building through the clearance gap, and specifically, as shown in FIG.3, FIG.4, FIG.7, the side surface of the outdoor side of the building in the groove part 73 Among these, the left end portion (or right end portion) and the vicinity thereof are arranged at portions corresponding to the notches 74 of the draining plate 70.

  With such a structure, when a fire occurs on the outdoor side of the building, the gap between the notch portion 74 and the second connection portion 85 can be closed by the thermal expansion refractory member 120 expanded by the heat of the fire. Therefore, it is possible to suppress the fire flame from entering the indoor side of the building through the gap. Therefore, the fireproof performance of the shutter 1 can be further improved.

(Action of shutter fire prevention structure)
Then, the effect | action of the fire prevention structure of the shutter 1 comprised in this way is demonstrated.

  First, in the fully closed state of the opening, when a fire occurs on the outdoor side of the building, the shutter curtain 30 expands due to thermal expansion due to the heat of the fire. As the elongated portion is deformed toward the outdoor side of the building, the seat plate 31 moves toward the outdoor side of the building (more specifically, the seat plate 31 is directed toward the outdoor side of the building. Move diagonally upward).

  Next, when the thermal expansion refractory members 90a and 90b attached to the seat plate 31 are heated above a predetermined temperature by the heat of the fire before, during or after the seat plate 31 is moved, FIG. As shown, the thermal expansion refractory members 90a and 90b expand. Thereby, for example, when the seat plate 31 is deformed in a curved shape so that the central portion in the left-right direction of the seat plate 31 protrudes toward the outdoor side of the building from the other portions, the seat plate 31 and the guide rail Even if a gap spreads between the two, the expansion of the thermal expansion refractory member 90a can close the gap and suppress the intrusion of flame into the indoor side of the building. Further, when the seat plate 31 is deformed into a curved shape, even if the locking device 33 attached to the seat plate 31 approaches a fire source, the thermal expansion refractory member 90b prior to combustion or melting of the locking device 33. Therefore, it is possible to avoid the locking device 33 from being ignited by the expanded thermal expansion refractory member 90b. Further, the groove portion 73 of the draining plate 70 can be closed by the expanded thermal expansion refractory member 90b. Thereby, it can suppress that the locking device 33 or the stopper 34 which burned or melt | dissolved falls to the groove part 73, and flows out outside from the said groove part 73, and it becomes possible to avoid that the said fire spreads.

  When the fire flame flows into the inside of the guide rail 13, the fire prevention member 102 causes the fire flame to enter the indoor side of the building through the gap between the guide rail 13 and the rail cap 100. Can be suppressed. Further, when the thermal expansion refractory member 110 attached to the base member 101 of the rail cap 100 is heated above a predetermined temperature by the heat of the fire, the thermal expansion refractory member 110 expands as shown in FIG. . Thereby, since the space between the guide rail 13 and the base member 101 can be closed by the expanded thermal expansion refractory member 110, the fire flame is prevented from entering the indoor side of the building through the space. it can.

  Further, when the thermal expansion refractory member 120 attached to the draining plate 70 is heated at a predetermined temperature or higher by the heat of the fire, the thermal expansion refractory member 120 expands as shown in FIG. As a result, the expanded thermal expansion refractory member 120 can close the gap between the cutout portion 74 and the second connection portion 85 of the water draining plate 70, so that the flame of the fire passes through the gap on the indoor side of the building. Can be prevented from entering.

(effect)
As described above, according to the first embodiment, in the region of the side surface of the seat plate 31, in the fully closed state of the opening, the first region in which the fire flame may enter the indoor side of the building, and the opening In the fully closed state, at least one of a region on the closing direction side with respect to the combustible member attached to the indoor side surface of the building in the seat plate 31 and a region in which the combustible member melted by the heat of the fire may flow. Since the thermal expansion refractory member 90 that expands due to the heat of the fire is provided only in the second region including either one, compared to the case where the thermal expansion refractory member 90 is provided over the entire length in the left-right direction of the seat plate 31, While suppressing that a flame penetrate | invades the indoor side of a building via the shutter 1, the installation amount of the thermal expansion fireproof member 90 can be reduced. At the same time, the thermal expansion and fire-resistance member 90 is installed in a place where a flame is likely to enter the indoor side of the building through the shutter 1, so that the thermal expansion and fire-resistance over the entire length in the left-right direction (longitudinal direction) of the seat plate 31. Compared with the case where the member 90 is provided, the fireproof performance of the shutter 1 can be maintained at the same level. Therefore, it is possible to reduce the installation cost of the shutter 1 while maintaining the fire prevention performance of the shutter 1.

  In addition, the first region is a region of an end portion in the direction along the width direction of the shutter curtain 30 in the front end portion of the seat plate 31, so that the first region is seated by a thermal expansion fireproof member 90 a expanded by the heat of fire, for example. Since the gap between the plate 31 and the guide rail 13 or the gap between the seat plate 13 and the second groove side piece 73b of the groove 73 can be closed, the flame of the fire is built through these gaps. It is possible to suppress intrusion into the indoor side.

  Further, in the second region, when the thermal expansion refractory member 90b expanded by the heat of the fire enters the groove 73 of the draining plate 70, the combustible member melted by the heat of the fire may flow into the groove 73. Since this is a region where a certain portion can be closed, the groove portion 73 can be closed by the expanded thermal expansion refractory member 90b. Thereby, it can suppress that the locking device 33 or stopper 34 which burned or melt | dissolved falls to the groove part 73, and flows out of the said groove part 73 outside, and it becomes possible to avoid that the said fire spreads.

[Embodiment 2]
Next, the fire prevention structure of the shutter according to the second embodiment will be described. This Embodiment 2 is a form which provided the thermal expansion fireproof member only in the 1st area | region and 2nd area | region in the side surface of the indoor side or outdoor side of a building among the area | regions of the side surface of a seat board. However, the configuration of the second embodiment is substantially the same as the configuration of the first embodiment unless otherwise specified. The configuration substantially the same as the configuration of the first embodiment is used in the first embodiment. The same reference numerals and / or names as those used are attached as necessary, and the description thereof is omitted.

(Constitution)
First, the configuration of the shutter according to the second embodiment will be described. FIG. 9 is a diagram showing a fire prevention structure of the shutter according to the second embodiment, and shows a region corresponding to FIG. As shown in FIG. 9, the shutter 1 according to the second embodiment is configured in substantially the same manner as the shutter 1 according to the first embodiment. However, about the structure of the seat board 31 and the fireproof structure of the seat board 31, the device shown below is given.

(Configuration-seat plate)
Next, details of the configuration of the seat plate 31 will be described. 10A and 10B are views showing the seat plate 31, wherein FIG. 10A is a rear view, FIG. 10B is a plan view, FIG. 10C is a right side view, and FIG. 11 is an enlarged view of FIG. In addition, in FIG. 11, illustration of a part of seat plate 31 is abbreviate | omitted. As shown in FIGS. 9 to 11, the seat plate 31 includes a main body piece 60 and attachment pieces 65 and 66.

  Among these, a recessed portion 67 is provided in a lower portion of the main body piece 60. The concave portion 67 is used by the user to move the shutter curtain 30 up and down by placing a hand from the outdoor side of the building. The recess 67 is formed in a U-shape (or C-shape) whose longitudinal cross-section projects toward the indoor side of the building, and is formed over the entire length of the shutter curtain 30 in the left-right direction. Further, the shape of the concave portion 67 is specifically set to a shape that allows the user to reach the concave portion 67, and more specifically, the length (height of the concave portion 67 in the vertical direction). ) Is set to be longer (higher) than the thickness of the user's finger, and the length (depth) of the recess 67 in the front-rear direction is set to a length (depth) to which the user's finger is applied. .

(Configuration-Fireproof structure of seat plate)
Next, the fire prevention structure of the seat plate 31 will be described. FIG. 12 is a diagram illustrating a state of the shutter 1 when a fire occurs on the outdoor side of the building in the fully closed state of the opening, and is a diagram illustrating a region corresponding to FIG. 9. As shown in FIG. 12, as a fire prevention structure for preventing a fire flame generated on the outdoor side of the building from entering the indoor side of the building via the seat plate 31, the first on the side surface of the seat plate 31 is provided. A thermal expansion refractory member 130 is provided in the region.

  The “first region” in the present embodiment, in addition to the “first tip region” in the first embodiment, is further in the direction along the width direction of the shutter curtain 30 within the recess 67 of the seat plate 31. This is an end region (that is, a left end region and a right end region inside the recess 67; hereinafter referred to as a “first recess region”), and the thermal expansion refractory member 130 is installed over the entire first recess region. . Although a more specific determination method of the “first recess region” is arbitrary, for example, the thermal expansion refractory member 130 expanded by the heat of a fire causes the recess 67 and the side surface along the vertical direction of the guide rail 13 to be The gap between each other can be determined so that the flame can be blocked to the extent that it is difficult to enter. However, such a region can be determined depending on the expansion rate, thickness, etc. of the thermal expansion refractory member 130, and can be determined by experiments or the like. In the present embodiment, the vertical length (height) of the thermal expansion refractory member 130 is set to be substantially the same as the vertical length (height) of the internal space of the concave portion 67, and the thermal expansion refractory member 130. The length (width) in the left-right direction is set to about several millimeters, and such a thermally expanded refractory member 130 is placed on the inner side surface of the recess 67 in the direction along the width direction of the shutter curtain 30. It is arranged so as to reach the inner side in the left-right direction starting from the end. By disposing the thermal expansion refractory member 130 in the first tip region in this way, when a fire flame generated on the outdoor side of the building flows into the guide rail 13, the fired flame flows into the recess 67 and the guide. It is possible to suppress intrusion through a gap between the rail 13 and the side surface along the vertical direction.

(effect)
As described above, according to the second embodiment, the first region is an end region in the direction along the width direction of the shutter curtain 30 in the concave portion 67 of the seat plate 31. Since the internal space of the recess 67 can be blocked by the expanded thermal expansion fireproof member 130, it is possible to suppress the fire flame from entering the indoor side of the building through the internal space.

[III] Modifications to Each Embodiment While the embodiments of the present invention have been described above, the specific configuration and means of the present invention are within the scope of the technical idea of each invention described in the claims. It can be arbitrarily modified and improved within. 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 if the fire prevention performance of the shutter 1 according to the present invention is about the same as that of the conventional structure, the problem of the present application is solved when a structure different from the conventional structure can ensure the same degree of installation. doing.

(About combustible materials)
In the first and second embodiments, it has been described that the combustible member corresponds to the locking device 33 and the stopper 34. However, the present invention is not limited to this, and for example, if it is a combustible member attached to the side surface of the seat plate 31. For example, the sensor etc. which detect that the seat board 31 contacted the obstruction may be sufficient.

(Shutter fire prevention structure)
In the first and second embodiments, the fire prevention structure of the shutter 1 has been described as including the fire prevention structure of the seat plate 31, the fire prevention structure of the guide rail 13, and the fire prevention structure of the draining plate 70. For example, at least one of the fire prevention structure of the guide rail 13 or the fire prevention structure of the draining board 70 may be omitted.

(Appendix)
The fire prevention structure of the shutter of Supplementary Note 1 is a shutter fire prevention structure including a shutter curtain that opens and closes an opening of a building, and the opening is fully closed by the shutter curtain in the fully closed state of the opening. A fire curtain for preventing a flame from entering the indoor side of the building through the shutter when a fire occurs on the outdoor side of the building, wherein the shutter curtain is configured to close the opening. A seat plate is provided at the front end of the shutter curtain when the door is opened and closed, and the flame of the fire can enter the indoor side of the building in the area of the side surface of the seat plate when the opening is fully closed In the closed direction side with respect to the combustible member attached to the indoor side surface of the building in the seat plate in the fully closed state of the first area and the opening A thermal expansion refractory member that expands by the heat of the fire is provided only in the second region including at least one of the region or the region where the combustible member melted by the heat of the fire may flow. .

  The shutter fire prevention structure according to appendix 2 is the shutter fire prevention structure according to appendix 1, wherein the first area is an area of an end portion in a direction along the width direction of the shutter curtain among the front end portions of the seat plate. It is.

  The shutter fire-proof structure according to appendix 3 is the shutter fire-proof structure according to appendix 1, wherein the seat plate is provided with a recess for a user to reach from the outside of the building, and the first region is It is the area | region of the edge part of the direction along the width direction of the said shutter curtain among the front-end | tip parts of a seat board, and the area | region of the edge part of the direction along the width direction of the said shutter curtain among the insides of the said recessed part.

  The shutter fire prevention structure according to appendix 4 is the shutter fire prevention structure according to any one of appendices 1 to 3, wherein the front end portion of the seat plate projects in the closing direction of the shutter curtain. And a second protrusion that is disposed on the indoor side of the building with respect to the first protrusion, the second protrusion protruding toward the closing direction of the shutter curtain, and the periphery of the opening The groove portion is located on the indoor side of the building with respect to the first protruding portion of the seat plate, and the second protruding portion of the seat plate in the fully closed state of the opening from the outdoor side of the building. A cover piece having a groove part for covering is provided, and the second region is melted by the heat of the fire among the groove part when the thermally expanded refractory member expanded by the heat of the fire enters the groove part. Combustible material It is an area in which it is possible to close a portion that may be Komu.

(Additional effects)
According to the fire prevention structure of the shutter according to appendix 1, the first area in which the flame of fire may enter the indoor side of the building in the area of the side surface of the seat plate in the fully closed state of the opening, and the opening In the fully closed state, at least one of the region on the closing direction side of the combustible member attached to the indoor side surface of the building in the seat plate and the region where the combustible member melted by the heat of the fire may flow Since the thermal expansion fire-resistant member that expands due to the heat of the fire is provided only in the second region including either of them, the thermal expansion fire-resistant member is provided over the entire length in the longitudinal direction of the seat plate through the shutter. Thus, it is possible to suppress the intrusion of the flame into the indoor side of the building and to reduce the installation amount of the thermal expansion fireproof member. At the same time, compared to the case where the thermal expansion fireproof member is provided over the entire length in the longitudinal direction of the seat plate by installing the thermal expansion fireproof member at a place where the flame is likely to enter the indoor side of the building through the shutter. Thus, the fireproof performance of the shutter can be maintained at the same level. Therefore, it is possible to reduce the installation cost of the shutter while maintaining the fireproof performance of the shutter.

  According to the fire prevention structure of the shutter described in appendix 2, the first region is an end region in the direction along the width direction of the shutter curtain in the front end portion of the seat plate. The expanded thermal expansion refractory member can close the gap between the seat plate and the guide rail, and the gap between the seat plate and the drainage plate on the outside side of the building. It is possible to suppress the fire flame from entering the indoor side of the building.

  According to the fire prevention structure of the shutter according to attachment 3, the first region is an end region in the direction along the width direction of the shutter curtain in the front end portion of the seat plate. Since at least the gap between the seat plate and the guide rail can be closed by the expanded thermal expansion refractory member, it is possible to prevent the fire flame from entering the indoor side of the building through the gap. Become. Moreover, since the first region is an end region in the direction along the width direction of the shutter curtain in the interior of the recess, the expanded thermal expansion fire-resistant member can block the interior space of the recess. It is possible to suppress a fire flame from entering the indoor side of the building through the internal space.

  According to the fire prevention structure of the shutter described in appendix 4, the second region has a combustible member melted by the heat of the fire in the groove portion when the thermally expanded refractory member expanded by the heat of the fire enters the groove portion. Since it is an area | region where it is possible to block the part which may flow in, a groove part can be plugged up by the expanded thermal expansion fireproof member. Thereby, it can suppress that the combustible member which burned or fuse | melted falls to a groove part, and flows out outside from the said groove part, and it becomes possible to avoid that the said fire spreads.

DESCRIPTION OF SYMBOLS 1 Shutter 2 Housing 3 Opening part 10 Frame body 13 Guide rail 14 Storage frame 14a Fitting part 14b Connection piece 20 Shutter storage part 30 Shutter curtain 30a Slat 30b Fitting part 31 Seat plate 32 Fitting part 33 Locking device 33a Latch 33b Operation Lever 33c Latch bar 34 Stopper 40 Opening / closing machine 41 Chain 50 Winding shaft 60 Main body piece 61 First protrusion 62 Second protrusion 63 Connection section 64 Notch 65, 66 Mounting piece 67 Recess 70 Water drain plate 71 Water drain plate main body 71a Mounting hole 72 Standing piece 73 Groove portion 73a First groove side piece 73b Second groove side piece 73c Third groove side piece 73d Mounting hole 74 Notch 76 Watertight material 80 Left vertical frame 81 Right vertical frame 82 Vertical frame 83 Vertical frame main body 83a Joint part 84 First connection part 85 Second connection part 90, 90a, 90b Thermal expansion Refractory member 100 rail cap 101 base member 102 Fire member 110 thermal expansion refractory member 120 thermal expansion refractory member 130 thermal expansion refractory member 140 thermal expansion refractory member R1 first penetration route R2 second penetration route

Claims (4)

A fire prevention structure of a shutter having a shutter curtain that opens and closes an opening of a building, and a fire has occurred on the outdoor side of the building in the fully closed state where the opening is fully closed by the shutter curtain A fire prevention structure for preventing a flame from entering the indoor side of the building through the shutter,
At the tip of the shutter curtain when the shutter curtain is opened and closed so as to close the opening, a seat plate is provided,
The tip portion of the seat plate is
A first protrusion protruding toward the closing direction of the shutter curtain;
A second protrusion disposed on the indoor side of the building with respect to the first protrusion, the second protrusion protruding toward the closing direction of the shutter curtain,
Around the opening,
It is a groove located on the indoor side of the building from the first protrusion of the seat plate, and does not cover the first protrusion of the seat plate from the outdoor side of the building in the fully closed state of the opening. Providing a cover piece having a groove for covering the second protrusion of the seat plate from the outdoor side of the building;
Of the side area of the seat plate,
A first region which is a region of the side surface on the indoor side of the building in the first projecting portion and is an end region in a direction along the width direction of the shutter curtain;
Of the side surface on the outdoor side of the building in the second projecting portion, the region including at least a portion overlapping with the first region when viewed from the prospective direction side , is attached to the side surface on the indoor side of the building in the seat plate A region in the closing direction with respect to the combustible member formed, or a second region that is a region in the closing direction with respect to the combustible member attached to the side surface on the indoor side of the building in the seat plate and a region in the vicinity thereof In addition,
The Rukoto provided thermal expansion refractory member that expands by the heat of the fire, in the fully closed state the opening, by the thermal expansion refractory member of the first region expanded by the heat of the fire, the groove side piece of the groove Between the first protrusion and the second protrusion, the groove-side piece positioned so as to face each of the first protrusion and the second protrusion, and the first protrusion. A gap between the groove side piece and the second projecting portion is closed by the thermal expansion refractory member in the second region expanded by the heat of the fire. In the fully closed state of the opening, the fire flame can be prevented from entering the indoor side of the building, and the combustible member melted by the heat of the fire can be prevented from flowing in the closing direction. did,
Shutter fire prevention structure. A fire prevention structure of a shutter having a shutter curtain that opens and closes an opening of a building, and a fire has occurred on the outdoor side of the building in the fully closed state where the opening is fully closed by the shutter curtain A fire prevention structure for preventing a flame from entering the indoor side of the building through the shutter,
At the tip of the shutter curtain when the shutter curtain is opened and closed so as to close the opening, a seat plate is provided,
The seat plate is provided with a recess for the user to hang from the outdoor side of the building,
Of the side area of the seat plate,
A first end region of the seat plate is an end region in the direction along the width direction of the shutter curtain, and an end region in the direction along the width direction of the shutter curtain in the interior of the recess. Area,
A region on the closing direction side with respect to the combustible member attached to the indoor side surface of the building in the seat plate, or a region on the closing direction side with respect to the combustible member attached to the side surface on the indoor side of the building in the seat plate And the second region which is a region in the vicinity thereof,
By providing a thermal expansion refractory member that expands with the heat of the fire, the fire flame can be prevented from entering the indoor side of the building in the fully closed state of the opening, and melted by the heat of the fire The combustible member can be prevented from flowing into the closing direction side,
Shutter fire prevention structure. The tip portion of the seat plate is
A first protrusion protruding toward the closing direction of the shutter curtain;
A second protrusion disposed on the indoor side of the building with respect to the first protrusion, the second protrusion protruding toward the closing direction of the shutter curtain,
Around the opening,
A groove located on the indoor side of the building with respect to the first protrusion of the seat plate, for covering the second protrusion of the seat plate from the outdoor side of the building in the fully closed state of the opening. Providing a cover piece having a groove,
By providing the thermal expansion refractory member in the second region, the thermal expansion refractory member expanded by the heat of the fire in the fully closed state of the opening enters the groove portion, and is melted by the heat of the fire. It was possible to prevent the combustible member from flowing into the closing direction.
A fire prevention structure for a shutter according to claim 2 . The second region is a region adjacent to the combustible member.
The fire prevention structure of the shutter according to any one of claims 1 to 3.

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