JP2013177743A - Fireproof construction of window shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof construction of a window shutter by improving fireproof performance of a substrate frame of a guide rail.SOLUTION: A guide rail 3 of a window shutter includes a first side edge 30 located closer to an exterior wall W and a second side edge 31 located farther from the exterior wall W to face an outdoor space, and is supported by a guide rail support frame 2 by connecting a base end side part 30A of the first side edge 30 to the guide rail support frame 2. The guide rail support frame 2 is provided with a side edge 2 whose base end side is mounted to the exterior wall W and whose tip side is connected with the base end side part 30A of the first side edge 30 of the guide rail 3. An outer surface of the side edge 2 faces the outdoor space, and an inner surface of the side edge 2 faces an indoor space formed between a shutter curtain in a fully closed state of its opening part and the exterior wall W. A reinforcing plate 9 formed of a material having a melting point higher than that of a material forming a substrate frame 2 of the guide rail 3 is provided so as to abut against a surface area including at least an upper part of the inner surface of the side edge 2.

Description

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

The window shutter device is attached to the outer wall W of the building so as to open and close the space outside the window device. When the window opening is closed by the shutter, the window shutter device is made of metal in the left and right metal guide rails. Both end portions in the width direction of the shutter curtain are received, and the metal seat plate at the lower end of the shutter curtain is in contact with or close to the metal lower frame, and inherently has a predetermined fire prevention performance.

However, in order to secure a longer evacuation time and to prevent the spread of fire as much as possible, it is desirable to maintain the fireproof performance for a longer time. The present inventors have considered improving the fireproof performance of the window shutter by improving the fireproof performance of the guide rail structure (in particular, the guide rail base frame).

Patent Document 1 describes that a reinforcing member is provided on the guide rail base frame, but this reinforcing member increases the structural strength of the guide rail base frame and restricts deformation of the guide rail base frame. Therefore, there is no viewpoint that the guide rail base frame itself has a fireproof performance.
JP 2007-70942 A

It is an object of the present invention to provide a fire prevention structure for a window shutter by improving the fire prevention performance of a guide rail base frame.

The technical means adopted by the present invention are:
The guide rail of the window shutter includes a first side on the side close to the outer wall and a second side on the side far from the outer wall and facing the outdoor space, and a guide rail is provided on the base end portion of the first side. It is supported by the guide rail support frame by connecting to the support frame,
The guide rail support frame has a base end attached to the outer wall, and has a side to which a base end side portion of the first side of the guide rail is connected to the front end, and an outer side surface of the side is in an outdoor space. The inner side surface of the side side faces the indoor space formed between the shutter curtain in the fully closed state of the opening and the outer wall, and includes at least an upper part of the inner side surface of the side side A fire prevention structure for a window shutter, in which a reinforcing plate made of a material having a melting point higher than that of the material forming the guide rail base frame is provided in contact with, close to, or opposed to the area.
It is.

In one aspect, a branch side extending to the indoor space side is formed perpendicularly to the side of the side of the guide rail support frame.
The reinforcing plate member includes: a side that is in contact with, close to, or spaced apart from the surface area; and a front side that is in contact with a surface area including at least an upper portion of the branch side, and the branch side of the guide rail support frame And the front side of the reinforcing plate.
In one aspect, the base end side part of the side of the guide rail support frame and the side of the reinforcing plate are fastened by a fastening member (screw, rivet, etc.), and the fastening member is supported by the guide rail. The decorative member extends in the height direction of the frame.
By connecting the side of the reinforcing plate to the relatively difficult to melt part of the guide rail base frame, the reinforcement plate material is maintained connected to the guide rail base frame, and the reinforcing function of the guide rail base frame by the reinforcing plate (shielding function) ) Can be held.

In one aspect, the side of the guide rail support frame and the side that is in contact with or close to or apart from the surface area of the reinforcing plate are fastened by a fastening member,
The base end sides of both end portions in the opening width direction of the lintel member positioned on the lower surface of the shutter case are fastened to the side of the guide rail support frame and the side of the reinforcing plate using the fastening member.
In one aspect, the reinforcing plate member includes a surface portion that is positioned at an upper portion of the first side of the guide rail and extends along the first side of the guide rail. Is integrally formed with a support piece (upper side 94 in the embodiment) extending toward the indoor space,
On the support piece, the distal end sides of both end portions of the lintel member in the opening width direction are placed.
In one aspect, the reinforcing plate member has a surface portion (second front side 93 in the embodiment) that is positioned above the first side of the guide rail and extends along the first side of the guide rail. And the front end portion of the surface portion is an extended portion extending beyond the front end portion of the first side of the guide rail, and a seat plate at the lower end of the shutter curtain is formed in the extended portion when the opening is fully opened. An abutted piece (lower side 95 in the embodiment) that abuts is integrally formed.

The present invention provides a reinforcing plate material in an area including an upper part that is easily affected by heat in the event of a fire of the guide rail base frame constituting the guide rail structure, so that the upper part of the guide rail base frame is melted indoors and outdoors. To prevent penetration.

By forming the contact piece using the reinforcing plate material provided at least at the upper part of the guide rail base frame, the reinforcing plate material can have a plurality of functions and the number of parts can be reduced. Since the reinforcing plate material is attached to the guide rail base frame, the contacted pieces are attached at the same time, so that workability is good.

It is the schematic front view and side view of a window shutter apparatus. It is a longitudinal cross-sectional view of a window shutter apparatus (opening part fully closed state). It is a longitudinal cross-sectional view of a window shutter apparatus (opening part full open state). It is a partial top view of the window shutter apparatus which concerns on this embodiment, the left side is a partial top view of a lower part, and the right side is a partial top view of an upper part. It is the elements on larger scale of FIG. 2, and has shown the upper part of the guide rail and the guide rail base frame. FIG. 4 is a partially enlarged view of FIG. 3 and shows an upper portion of the guide rail and the guide rail base frame. It is a top view of the upper part of the guide rail structure concerning this embodiment. Although only one guide rail structure is shown in FIG. 7, the other guide rail structure has the same configuration. The left figure is a side view of the lintel member, and the right figure is a plan view showing the connection between the upper part of the guide rail base frame and both ends of the lintel member in the opening width direction. It is the top view seen from the top view and inner side of the guide rail base frame which concerns on this embodiment, and a reinforcement board | plate material. The left figure is a plan view of the upper part of the guide rail base frame, and shows the reinforcing plate material mounted on the upper part of the guide rail base frame. The right figure is a plan view of a lower part of the guide rail base frame, and shows a rail lower bracket and a thermal expansion refractory member attached to the lower part of the guide rail base frame. It is a figure which shows the reinforcement board | plate material of the guide rail base frame which concerns on this embodiment. It is the elements on larger scale of Drawing 3, and shows the rail lower bracket and thermal expansion fireproof member provided in the room inner side of the lower end part of a guide rail. It is a top view of the lower part of the guide rail structure concerning this embodiment. Although only one guide rail structure is shown in FIG. 12, the other guide rail structure has the same configuration. It is a figure which shows the thermal expansion fireproof member with which the rail lower bracket which concerns on this embodiment, and the said bracket were mounted | worn. It is a figure similar to FIG. 11, and shows the rail lower bracket and thermal expansion fireproof member which concern on other embodiment. It is a figure similar to FIG. 12, and shows the rail lower bracket and thermal expansion fireproof member which concern on other embodiment. It is a figure similar to FIG. 11, and shows the rail lower bracket and thermal expansion fireproof member which concern on other embodiment. It is a figure similar to FIG. 12, and shows the rail lower bracket and thermal expansion fireproof member which concern on other embodiment.

In FIG. 1, the left figure is a front view of the window shutter device viewed from the outdoor side, and the right figure is a side view of the window shutter device. FIG. 2 is a longitudinal sectional view of the window shutter device in the fully closed state of the window opening, and FIG. 3 is a longitudinal sectional view of the window shutter device in the fully opened state of the window opening. A window device (not shown) is provided in the window opening of the building, and the window shutter device is attached to the outer wall W of the building so as to open and close a space outside the window device.

The window shutter device is located above the window opening and attached to the outer wall W in a take-out manner, and the window shutter device is located on both sides in the width direction of the window opening and attached to the outer wall W in a take-out manner. The left and right guide rail base frames 2, the left and right guide rails 3 supported by the left and right guide rail base frames 2, the winding shaft 4 provided in the shutter case 1, and the upper end are connected to the winding shaft 4. And a shutter curtain 5 that opens and closes the outdoor portion of the window opening by being wound up / rolled out by the winding shaft 4 while being guided by the guide rail 3 at both ends in the width direction, and the window opening And a lower frame (water draining plate) 6 attached to the outer wall W in a take-out shape. The window shutter device may be a so-called sash-integrated window shutter. In this case, the frame of the window sash constitutes the guide rail base frame, and the outdoor portion of the lower frame of the window sash constitutes the lower frame (draining plate) of the window shutter.

2 and 3, the window shutter device is an electric type in which the winding shaft 4 is rotationally driven by the opening / closing machine M, but the window shutter device may be a manual type. In this specification, the expressions “outside of room” and “inside of room” mean not only the actual outside of room and inside of room but also used to specify the relative position of components. Please keep in mind. Further, in this specification, the “part not facing the outdoor space” means that a wall part is interposed between the part not facing the outdoor space and the outdoor space, and the outdoor part is covered with the wall part. The part that doesn't face directly. A wall portion of a member that does not face the outdoor space is formed by a portion of the member or a portion of another member. For example, between the portion of the guide rail that does not face the outdoor space and the outdoor space, the other portion of the guide rail or / and the end portion of the slat received by the guide rail or / and the portion of the guide rail base frame are interposed. Can do. Between the portion of the guide rail base frame that does not face the outdoor space and the outdoor space, another portion of the guide rail base frame and / or a portion of the guide rail may be interposed. Between the portion of the seat plate that does not face the outdoor space and the outdoor space, another portion of the seat plate or / and a portion of the lower frame, or a portion of another member (for example, a reinforcing plate member or a guide rail) Can intervene. Between the portion of the lower frame that does not face the outdoor space and the outdoor space, there is another portion of the lower frame or / and a seat plate portion, or a portion of another member (for example, a reinforcing plate member or a guide rail). Can intervene.

[Guide rail]
The guide rail 3 is shown in FIGS. 1 to 7, 11, and 12. The guide rail 3 is formed of an aluminum mold and is a long member extending perpendicularly to the height direction of the window opening. The side rail 30 and a side edge 31 positioned on the outdoor side with respect to the side edge 30 The first base 32A has a substantially U-shaped portion in plan view. The side edges 30 and 31 are spaced apart and extend substantially parallel to the outer wall W of the building, and an internal space is formed between the opposing side edges 30 and 31. The base sides of the side sides 30 and 31 are extended from the first bottom side 32A so that the extended side sides 30A and 31A extend, and the base side of the extended side sides 30A and 31A is connected to the second base side 32B. A hollow portion is formed adjacent to the bottom side of the internal space from the first bottom side 32A, the second bottom side 32B, and the extended side sides 30A, 31A. In relation to the outer wall W of the building, the side 30 and the extended side 30A are close to the outer wall W, and the side 31 and the extended side 31A are far from the outer wall W. The guide rail 3 has a height corresponding to the total height of the opening, and extends vertically from the lower frame 6 until reaching the shutter case 1.

The upper end portions of the side edges 30 and 31 of the guide rail 3 are curved in directions away from each other to form curved portions 300 and 310, and the upper portion of the guide rail 3 is located in the lower portion of the shutter case 1. And it has become an expanded shape. Pocket portions 33, 34 extending in the height direction are formed in the front end portions (openings of the internal space) of the side sides 30, 31 so as to face each other, and the pocket portions 33, 34 have a mohair as a silencer. (Not shown) are provided so as to face each other, and the indoor and outdoor surface portions of the widthwise end portion of the shutter curtain 5 received in the internal space come into contact with the moisture provided in the pocket portions 33 and 34. ing. In the present specification, a space that receives an end in the width direction of the shutter curtain 5 whose width is narrowed by the pocket portions 33 and 34 in the internal space is referred to as a guide space G. A pocket portion 35 is formed on the inner surface of the side 30 of the guide rail 3 so as to be located on the opening side of the internal space and adjacent to the pocket portion 33.

On the extended side 30 </ b> A on the side close to the outer wall W of the guide rail 3, mounting sides 36 and 37 are formed extending toward the outer wall W. The guide rail 3 is attached to the outer wall W by the mounting pieces 36 and 37. On the other hand, it is attached to and supported by the distal end sides of the left and right guide rail base frames 2 attached in a take-out shape. In the illustrated embodiment, the attachment piece 36 is an L-shaped piece in plan view formed so as to extend the second bottom side 32B toward the outer wall W at the proximal end portion of the extended side 30A. Is a piece which is located at the tip side portion of the extended side 30A and extends toward the outer wall W perpendicularly to the extended side 30A.

[Guide rail base frame]
The guide rail base frame 2 is shown in FIGS. 1 to 9, 11, and 12. The guide rail base frame 2 is formed of an aluminum mold and is a long member extending perpendicularly to the height direction of the window opening. The upper end of the guide rail base frame 2 reaches the lower surface of the shutter case 1, and the lower end side extends further below the upper surface of the lower frame 6. The guide rail base frame 2 is attached to the outer wall W in a take-out shape, and is attached to and supported by the guide rail 3 at the tip. More specifically, the guide rail base frame 2 includes a side 20 that extends in a direction perpendicular to the outer wall W, and a base that extends vertically outward from the side 20 at the base end of the side 20. 21, a branch side 22 extending perpendicularly toward the inner side (opposite side of the base side 21) leaving the surplus end portion 200 on the tip side of the side side 20, and from the tip of the branch side 22 An attachment piece 23 extending perpendicularly to the branch side 22 in a direction away from the outer wall W, and an attachment piece 24 formed at the tip of the side 20 (extra end portion 200) are provided. On the inner side of the side edge 20, the rising pieces 25 and 26 are positioned on the base end side and extend vertically inward with respect to the side edge 20 (opposite to the base edge 21).

The attachment structure of the guide rail base frame 2 to the outer wall W is shown in FIGS. The guide rail base frame 2 is fixed to the outer wall W by screws S with the base 21 in contact with the outer wall W. A locked member 210 having a U-shaped cross-sectional view is connected to the outdoor side surface on the base end side of the side 21 by a rivet R. In one aspect, the locked member 210 is a short piece, and a plurality of locked members 210 are mounted at intervals in the height direction of the guide rail base frame 2. A height direction so as to conceal the screw S for fixing the base 21 to the outer wall W and the rivet R for fastening the locked member 210 to the side 20 located on the outdoor side surface of the base 20 on the base end side. The decorative member 211 extending in the direction is locked to the locked member 210. The decorative member 211 is formed from an aluminum mold. Caulking 212 is applied between the decorative member 211 and the outer wall W.

The attachment piece 24 on the distal end side of the side 20 is a piece formed in a U-shape in plan view so as to form a groove, and the attachment piece 23 is located on the distal end side of the side 20 with respect to the side 20. It is a piece that extends in the direction away from the outer wall W perpendicularly to the branch side 22 from the tip of the branch side 22 that extends vertically. By attaching the attachment pieces 36 and 37 of the guide rail 3 to the attachment pieces 24 and 23 of the guide rail base frame 2, the guide rail 3 is attached to the distal end side of the guide rail base frame 2. With the mounting piece 36 of the guide rail 3 engaged with the mounting piece 24 of the guide rail base frame 2, the mounting piece 37 of the guide rail 3 and the mounting piece 23 of the guide rail base frame 2 are brought into contact with each other. Are superposed and fixed with screws S. The outer surface of the side 20 of the guide rail base frame 2 and the outer surface of the second bottom 32B of the guide rail 3 are flush with each other. In the state where the guide rail base material 2 is attached to the outer wall W, the side 20 faces the outside (outside of the room), and the branch side 22, the attachment piece 23, and the rising pieces 25, 26 are inside (opening side). ). The inner side surface of the side 20 directly faces the opening. The attachment pieces 36 and 37 of the guide rail 3 are formed on the extended side 30A of the guide rail 3, and the guide rail 3 is engaged with the guide rail base frame 2 on the bottom extended side 30A. Therefore, in the illustrated embodiment, the side 30 of the guide rail 3 is not covered with the guide rail base frame 2, and the side 30 is a room between the shutter curtain 5 and the outer wall W in the fully closed state of the opening. Directly facing the space A (the upper end of the indoor space A is defined by the lintel 15 and the lower end is defined by the upper surface 60 of the lower frame 6). It should be understood by those skilled in the art that the connection configuration of the guide rail base frame 2 and the guide rail 3 can take various configurations in addition to the illustrated embodiment.

[Shutter curtain and seat plate]
The shutter curtain 5 has a predetermined height and is formed by connecting long plate-like slats 50 extending in the width direction of the opening so as to be rotatable in the height direction. An upper end of the shutter curtain 5 is connected to the winding shaft 4, and a seat plate 51 is provided at the lower end portion of the shutter curtain 5. In the fully open state of the window opening, the shutter curtain 5 is wound around the winding shaft 4. The slat 50 has a width dimension such that both ends in the length direction extend into the internal space of the guide rail 3, and when the shutter curtain 5 is raised and lowered and when the window opening is fully closed, both end portions in the width direction of the slat 50 are provided. Is received in the guide space of the guide rail 3. A locking recess 500 that functions as a wind-resistant hook is formed in the outdoor side surface portion of the slat 5. Also, a resin silencer 501 is provided at the end of the slat (see FIG. 4).

As shown in FIG. 6, the seat plate 51 includes a long and vertical plate-like portion 510 extending in the width direction of the window opening, and the lower end of the slat 50 directly above the upper end of the plate-like portion 510. The lower end portion of the plate-like portion 510 is curved inward to form a curved portion 512. A first piece 513 that extends horizontally from the indoor side surface toward the indoor side is formed in the lower half of the plate-like portion 510. The indoor side end portion of the first piece 513 is formed thicker than the horizontal portion, and an upward rising portion 5130 and a downward protruding portion 5131 are formed. A pocket 514 is formed in the indoor side surface portion of the plate-like portion 510 so as to be positioned below the first piece 513. The first piece 513 extends in the opening width direction along the plate-like portion 510, and the first piece 513 is provided with contact blocks 515 located at both ends in the opening width direction.

On the indoor side surface of the plate-like portion 510, there is a recessed latch bar accommodating portion 516 that is located above the first piece 513 and extends horizontally in the length direction of the seat plate 51 (plate-like portion 510). The latch bar L is accommodated in the latch bar accommodating portion 516 so as to be movable in the length direction. In the fully closed state of the opening, the latch bar L is locked from below to the latch receiving member 14 provided in the guide rail 3 (inner surface of the bottom side 72 of the reinforcing plate 7) to prevent the shutter curtain 5 from being lifted. ing. Except for the first piece 513, the seat plate 51 has dimensions that fit within the guide space G of the guide rail 3, and both end portions of the seat plate 51 in the length direction (opening width direction) are the first pieces 513. Is extended into the guide space G of the guide rail 3.

[Bottom frame]
The lower frame 6 is shown in FIGS. 1 to 3 and FIG. 11. The lower frame 6 of the window shutter is a long frame body that is positioned below the opening and extends in the width direction, and extends below the guide rail 3 beyond the entire width of the window opening. The lower frame 6 includes an upper side 60 that forms a draining surface, and a concave portion 600 that is formed on the outdoor side with respect to the upper side 60 and has an open top. The recess 600 is located immediately below the lifting path of the shutter curtain 5 and reaches the lower part of the guide rail 3 beyond the entire width of the window opening. In the recess 600, the lower half portion of the seat plate 51 at the lower end of the shutter curtain 5 is received in the fully closed state of the window opening.

More specifically, the lower frame 6 has an upper side 60 that gently slopes downward toward the outside of the room, and a lower slope that is located below the upper side 60 and gently moves downward from the middle of the upper side 60 toward the indoor side. A lower side 61 extending vertically, a vertical rear side 62 connecting the indoor side end of the upper side 60 and the indoor side end of the lower side 61, and a vertical indoor side front hanging from the outdoor side end of the upper side 60 A side 63, a bottom 64 extending from the lower end of the indoor front side 63 toward the outdoor side, an outdoor front side 65 rising vertically from the outdoor front end of the base 64, and an upper side from the indoor side end of the upper side 60 A rising side 66 extending vertically and a hanging side 67 hanging from the indoor side end of the lower side 61. The upper part of the space between the outdoor front side 65 and the indoor front side 63 is open, and a recess 600 is formed from the outdoor front side 65, the indoor front side 63, and the base 64. ing. The outdoor front side 65 is positioned on the outdoor side with respect to the seat plate 51 received in the recess 600, and the indoor front side 63 is positioned on the indoor side with respect to the seat plate 51 received in the recess 600. The bottom 64 forming the bottom of the recess 600 extends in a downwardly inclined manner toward the outdoor side. An L-shaped folded piece 650 is formed at the upper end of the outdoor front side 65 so as to be bent toward the indoor side.

[Guide rail fire prevention structure]
The fire prevention structure of the guide rail includes a reinforcing plate 7 and a thermal expansion fireproof member 8. The reinforcing plate 7 of the guide rail 2 is shown in FIGS. 2 to 7, 11, and 12. The thermal expansion refractory member 8 is shown in FIGS. 4, 7, and 12. In the internal space formed between the first side 30 close to the outer wall of the guide rail 3 and the second side 31 facing the outdoor space, a material having a higher melting point than the material forming the guide rail 3 The reinforcing plate 7 formed from is provided on at least part of the inner surface of the portion facing the outdoor space including the second side 31 so as not to protrude into the guide space G, and is provided on the inner surface of the second side 31. The portion of the reinforcing plate member 7 has a width dimension so as to face the end portion of the slat received in the guide space G, and the inner space of the guide rail 3 has an accommodating space (a mode shown in the drawing) extending in the height direction. Then, the pocket 35) is positioned so as not to protrude into the guide space G, and the thermal expansion refractory member 8 extending in the height direction is stored in the storage space so as not to protrude into the guide space G at room temperature. . The reinforcing plate 7 provided in the internal space of the guide rail 3 does not protrude into the guide space G, and the thermal expansion refractory member 8 does not normally protrude into the guide space G. 7. The thermal expansion refractory member 8 does not hinder the lifting / lowering operation of the shutter curtain 5 at the normal time.

More specifically, the reinforcing plate 7 is a long member that is formed of a metal plate having a higher melting point than aluminum, for example, a steel plate, and extends perpendicularly to the height direction of the window opening. , 71 and the base 72, and the side 70 and the side 30 (not facing the outdoor space) are connected by a rivet R. The reinforcing plate 7 may be provided on the guide rail by connecting the base 72 to the first base 32A that does not face the outdoor space of the guide rail 3. The reinforcing plate 7 is provided over substantially the entire height of the guide rail 3. The upper part of the bottom side 72 of the reinforcing plate 7 is an inclined side 720 that opens outward in an upward direction corresponding to the curved portions 300 and 310 of the upper part of the side parts 30 and 31 of the guide rail 3. The inclined side 720 is located in the shutter case 1.

The sides 70 and 71 of the reinforcing plate 7 are parallel to the sides 30 and 31 of the guide rail 3, and the bottom 72 of the reinforcing plate 7 is parallel to the first bottom 32 A of the guide rail 3. When the reinforcing plate 7 is received in the inner space of the guide rail 3, the outer surface of the base 72 is in contact with or close to the inner surface of the first base 32 A, and the outer surface of the side 70 is in contact with or close to the inner surface of the side 30. The outer surface of the side edge 71 is in contact with or close to the inner surface of the side edge 31.

The thickness of the reinforcing plate 7 is such that when the reinforcing plate 7 is provided in the inner space of the guide rail 3, the inner surface of the side 70 of the reinforcing plate 7 does not protrude from the pocket portion 33, and the inner surface of the side 71 is the pocket portion. The dimension is such that it does not protrude beyond 34. That is, the side sides 70 and 71 of the reinforcing plate 7 do not protrude into the guide space G.

The side 71 has a dimension extending from the proximal end of the side 31 of the guide rail to the rear of the pocket 34 on the distal end side. The slat 50 can move in the opening width direction in a state where both ends in the length direction are received in the guide space G of the guide rail 3, but the side 71 does not depend on the position of the slat end in the guide space G. It has a length that always faces the end of the slat 50. As described above, the reinforcing plate 7 is connected by the rivet R with the side 70 being brought into contact with the side 30 of the guide rail 3. Since the side 30 of the guide rail 3 does not face the outdoor space, the reinforcing plate 7 is applied to the side 30 that is less susceptible to the heat of the fire generated outside the side 31 than the side 31 and hardly melts. By connecting, the connection of the reinforcing plate 7 to the guide rail 3 can be maintained, so that the guide function by the side 71 of the reinforcing plate 7 can be maintained, and the slat end portion can be maintained in the guide space G.

In the present embodiment, the side 31, the extended side 31 </ b> A, the second bottom 32 </ b> B, and the side 20 </ b> A face the outdoor space. No reinforcing plate is provided on the inner surfaces of the extension side 31A and the second base 32B, but the first base 32A and the extension side 30A are located inside the extension side 31A and the second base 32B. Even if the extension side 31A and the second base 32B melt to some extent, the first base 32A and the extension side 30A can hold the connection between the guide rail 3 and the guide rail base frame 2 for a predetermined time.

The thermal expansion refractory member 8 provided on the guide rail 3 will be described. As shown in FIGS. 7 and 12, a pocket portion 35 is formed on the inner surface of the side 30 of the guide rail 3 on the opening side of the internal space, and the pocket portion 35 has a flame-retardant property. A thermal expansion refractory member 8 is accommodated. The thermal expansion refractory member 8 may not be fixed or bonded to the pocket portion 35 as long as the thermal expansion refractory member 8 is accommodated in a manner that does not separate from the pocket portion 35. Alternatively, the inner surface of the side 30 of the guide rail 3 only needs to have an accommodation space that is located on the opening side of the internal space and can accommodate the thermal expansion refractory member 8. It may be directly bonded or fixed to the inner surface of the side 30 so as not to protrude into the guide space G. In the illustrated embodiment, the thermal expansion refractory member 8 is a long plate body or sheet body having a predetermined plate thickness and extending in the height direction. The thermal expansion refractory member 8 is a material that foams and expands when heated to a temperature of 150 ° C. to 250 ° C., for example. As the thermal expansion refractory member 8 (thermal expansion refractory members 11 and 12 in the present embodiment), for example, Fiblock (registered trademark) of Sekisui Chemical Co., Ltd. can be used. The thermal expansion refractory member 8 is normally housed in the pocket portion 35 and has a thickness that does not protrude into the guide space G.

When the thermal expansion refractory member 8 is heated to a predetermined temperature or more in a fire in the fully open state of the window opening, the thermal expansion refractory member 8 is foamed and expanded to a thick state and expands so as to protrude from the pocket portion 35. And between the front end side part (including the pocket part 33) of the side 30 and the indoor side part of the width direction end part of the shutter curtain 5 (slat 50) received in the internal space of the guide rail 3 Is closed over the entire height of the opening to prevent fire from passing through the internal space of the guide rail 3 to ensure the fire resistance performance of the guide rail 3.

In the illustrated embodiment, the thermal expansion refractory member 8 is provided with the thermal expansion refractory member 8 on the inner surface of the side 30 of the guide rail 3 in the inner space of the guide rail 3. 3 may be provided on the inner surface of the reinforcing plate 7. For example, a thermal expansion refractory member may be provided on the inner surface of the side edge 70 of the reinforcing plate 7 so as not to protrude into the guide space G. The part to which the thermally expanded refractory member 8 is attached is not limited, and the thermally expanded refractory member may be attached to the inner surface of the side edge 71 or may be attached to the inner surface of the bottom edge 72.

[Fireproof structure of guide rail base frame]
The fire prevention structure of the guide rail base frame 2 includes a reinforcing plate 9. The reinforcing plate 9 of the guide rail base frame 2 is shown in FIGS. A reinforcing plate 9 is provided on the inner side surface of the side 20 of the guide rail base frame 2. The reinforcing plate 9 is formed by bending a metal plate having a higher melting point than aluminum, for example, a steel plate. In the illustrated embodiment, the reinforcing plate 9 is provided only in the upper part of the side 20 of the guide rail base frame 2. This is for coping with the possibility that aluminum forming the guide rail base frame 2 may be melted due to a high temperature near the upper end of the guide rail base frame 2 in the event of a fire. In particular, the guide rail base frame 2 according to the present embodiment is mainly composed of the side 20 that is a single plate-like portion, and there is no side that extends opposite the side 20 on the indoor side of the side 20. If the upper end portion of the side 20 is melted, a hole that directly communicates the external space and the indoor space A (the space formed between the shutter curtain 5 and the outer wall W when the opening is fully closed) is formed. become.

The reinforcing plate 9 has a first side 90 extending along the side 20 of the guide rail base frame 2 and a tip side of the first side 90 and is directed inward in a direction perpendicular to the first side 90. A first front side 91 extending from the front end, a second side side 92 extending perpendicularly from the front end of the first front side 91 in a direction away from the outer wall W with respect to the first front side 91, and a front end of the second side side 92 And a second front side 93 extending inwardly in a vertical direction with respect to the second side side 92.

For example, as shown in FIG. 10, the first side 90 is a rectangular plate-shaped portion, and the first front side 91 is a narrow vertical rectangular plate-shaped portion. The second side 92 is a vertically rectangular plate-like portion that is shorter than the first front side 91 and has a narrow width. The second front side 93 is formed by cutting out the distal end side of the horizontal rectangular plate-like portion into a trapezoidal shape. Specifically, the side edge 930 of the long side on the proximal end side and the short edge on the distal end side are formed. The side edge 931 of the side, the upper edge 932 of the horizontal long side connecting the upper ends of the side edges 930 and 931, and the first lower edge of the short side extending horizontally from the lower end of the side edge 930 on the base end side 933, a second lower edge 934 having a short side extending horizontally from the lower end of the side edge 931 on the front end side, and an inclined edge 935 connecting the first lower edge 933 and the second lower edge 934. . The reinforcing plate 9 further includes an upper side 94 extending horizontally from the upper edge 932 of the second front side 93 to the outer wall W side, and a horizontal shape extending from the second lower edge 934 of the second front side 93 to the outer wall W side. And a lower side 95 extending.

As shown in FIGS. 7 to 9, the width dimension of the first side 90 of the reinforcing plate 9 is substantially the same as the width dimension of the side 20 of the guide rail base frame 2, and the first front side 91. The width dimension is substantially the same as the width dimension of the branch side 22. More specifically, in the illustrated embodiment, the width dimension of the first side 90 of the reinforcing plate 9 is slightly smaller than the width dimension of the side 20 of the guide rail base frame 2 (excluding the surplus portion 200). The size of the side 20 extends substantially over the entire width (the width of the surface area between the rising piece 25 and the branch side 22).

The first front side 91 of the reinforcing plate 9 is in contact with the surface on the outer wall W side of the branch side 22 of the guide rail base frame 2, and the first front side 91 of the reinforcing plate 9 is The guide rail base frame 2 is connected to a branch side 22 (a portion not facing the outdoor space). Since the branch side 22 of the guide rail base frame 2 does not face the outdoor space, it is less affected by the heat of the fire generated on the outdoor side than the side 20 and is a reinforcing plate for the branch side 22 that is difficult to melt. 9 is connected to the guide rail base frame 2 to maintain the connection of the reinforcing plate member 9, and the reinforcing function of the guide rail base frame 2 by the side 90 of the reinforcing plate 9 (side 90). It is possible to maintain a shielding function when the material melts. Furthermore, the base end side portion of the side 20 is connected to the base end portion of the side 90 of the reinforcing plate 9 using a rivet R that connects the locking member 210 to the base end. The part to which the rivet R on the base end side of the side 20 of the guide rail base frame 2 is connected is covered with the decorative member 211 and does not directly face the outdoor space, so the rivet R is exposed to the side 20. Compared to the case where it is provided, it is less susceptible to the heat of the fire that occurred outside the room. Further, since none of the rivets R connecting the reinforcing plate 9 to the guide rail base frame 2 is exposed to the outside of the room, the appearance is good.

The width dimension of the second side 92 of the reinforcing plate 9 is substantially the same as the width dimension of the attachment piece 23, and the second side 92 abuts the outer surface of the attachment piece 23 surface to face. The second front side 93 of the reinforcing plate 9 extends along the side 30 of the guide rail 3. As shown in FIG. 7, the width of the second front side 93 is larger than the width of the side 30 of the guide rail 3, and the second front side 93 contacts the outer surface of the side 30 of the guide rail 3. A proximal end portion and a distal end portion (a distal end portion corresponding to the second lower edge 934) extending beyond the pocket portion 33 at the distal end of the side 30 of the guide rail 3 are provided. The extension dimension of the upper side 94 is larger than the extension dimension of the lower side 95. In the illustrated embodiment, the extension dimension of the upper side 94 is larger than the width dimension of the second side 92, and the extension dimension of the lower side 95 is the second dimension. It is a little smaller than the width dimension of the side 92. As is clear from FIG. 7, the lower side 95 is located in a region beyond the tip of the side 30 of the guide rail 3. The upper side 94 extends toward the outer wall W with substantially the same width as the second front side 93, and the area of the upper piece 94 is larger than the area of the lower piece 95.

On the lower surface of the shutter case 1, an opening groove as a passage for the shutter curtain 5 is formed across the opening width direction. A lintel member 15 is provided on the inner side (outer wall W side) of the opening groove, and the indoor side portion of the lower surface of the shutter case 1 is formed from the lintel member 15. The lintel member 15 extends in the opening width direction, the proximal end side of the lintel member 15 is in contact with the outer wall W, and the distal end side extends so as to be close to the opening groove. The tip side of the lintel member 15 includes a horizontal surface 150. Both ends of the lintel member 15 in the width direction are placed on the horizontal upper side 94 of the reinforcing plate 9 on the horizontal surface 150 on the distal end side, and the reinforcing plate 9 functions as a support portion for the lintel member 15. doing. Further, when installing the window shutter device, the lintel member 15 covering the upper side 94 of the reinforcing plate 9 can be used as a temporary storage place. Specifically, without connecting the lintel member to the guide rail base frame with screws or the like in advance, the guide rail base frame 2 to which the reinforcing plate 9 is attached is attached to the housing, and the lintel member is attached to the upper side 94 of the reinforcing plate 9. The mounting operation can be performed while placing the horizontal surfaces 150 on both ends in the width direction.

As shown in FIG. 7A, female screw portions 15 a and 15 b are formed in the lintel member 15, and screw holes 9 a in the upper portion of the side 20 of the guide rail base frame 2 and the side 90 of the reinforcing plate 9. 9b (FIGS. 8 and 10) and the female screw portions 15a and 15b are aligned with each other, and the lintel member 15 is connected to the overlapping side sides 20 and 90 by the screw S. Since the lintel member 15 is connected to the side 20 and the side 90 by the screw S, even if the side 20 of the guide rail base frame 2 is melted by heat during a fire, the lintel 15 Since both ends of the opening width direction are maintained connected to the side 90 of the reinforcing plate 9, the lintel member 15 does not fall off. In addition, since both ends of the lintel member 15 in the opening width direction are fixed to the side 90 of the reinforcing plate 9 in addition to the side 20 of the guide rail base frame 2, the horizontal surface 150 of the lintel 15 is used as the reinforcing plate 9. The support strength of the lintel member 15 is ensured in combination with being supported by the upper side 94 of the lintel.

The lower side 95 of the reinforcing plate 9 functions as a contacted piece (stopper) of the contact block 515 attached to the seat plate 51 at the lower end of the shutter curtain 5. As shown in FIG. 6, when the shutter curtain 5 is raised to the fully opened state, the contact block 515 provided on the horizontal piece 513 of the seat plate 51 comes into contact with the lower surface of the horizontal lower side 95 of the reinforcing plate 9. This prevents the so-called stagnation of the seat plate. By forming the contact piece (stopper) using the reinforcing plate 9 provided in the upper part of the guide rail base frame 2, the number of parts can be reduced.

As shown in FIGS. 2 and 3, in the illustrated embodiment, the reinforcing plate 9 has a height dimension corresponding to the upper portion of the guide rail base frame 2 and is easily exposed to a higher temperature during a fire. The reinforcing plate 9 provided in the upper part of the rail base frame 2 functions as a shield that blocks the penetration when the upper part of the side 20 facing the outdoor space of the guide rail base frame 2 melts and penetrates. In the illustrated embodiment, the first side 90 of the reinforcing plate 9 is in contact with the inner surface of the side 20 of the guide rail base frame 2, but the first side 90 has a function as a shield. What is necessary is just to be close | similar to the inner surface of the side 20 of the guide rail base frame 2, or to oppose. It will be understood by those skilled in the art that the reinforcing plate 9 may be provided over the entire height of the guide rail base frame 2. For example, the first side edge 90 and the first front edge 91 of the reinforcing plate 9 are provided over the entire height of the guide rail foundation frame 2, and the second side edge 92 and the second front edge 93 are provided above the guide rail foundation frame 2. You may form so that it may respond | correspond.

[Fire prevention structure at the bottom of the guide rail]
In the illustrated embodiment, the guide rail base frame 2 is not positioned on the indoor side of the side 30 of the guide rail 3. When the opening is fully closed, the indoor side of the side 30 is located on the shutter curtain 5 and the outer wall W. Directly facing the interior space A. In the illustrated embodiment, as shown in FIG. 11, the lower end 7 ′ of the reinforcing plate 7 of the guide rail 3 does not reach the lower end of the guide rail 3, and the reinforcing plate 7 is provided at the lower end portion of the guide rail 3. It has a part which is not arranged. If the outdoor front side 65 of the lower frame 6 and the lower end of the guide rail 3 are melted by heating during a fire, the outdoor space and the indoor space A between the shutter curtain 5 and the outer wall W , May communicate directly.

As shown in FIGS. 3, 4, 11, and 12, the rail is located on the indoor side (the indoor space A between the shutter curtain 5 and the outer wall W) side of the lower end portion of the side 30 of the guide rail 3. A lower bracket 10 is provided, and a thermal expansion refractory member 11 is held on the rail lower bracket 10. The rail lower bracket 10 is located on the indoor side of the lower end portion of the side 30 of the guide rail 3 and forms a space that limits the expansion region of the thermal expansion fireproof member 11. Here, the lower end of the side 30 of the guide rail 3 extends to a height position reaching the upper surface 60 of the lower frame 6 and the upper end of the recess 600, and the lower end portion of the side 30 of the guide rail 3 is the lower frame 6. The upper surface 60 and the upper end of the recessed portion 600 are regions above the upper end of the indoor space A (the lower end of the indoor space A is defined by the upper surface 60 of the lower frame 6). The rail lower bracket 10 is a surrounding member that surrounds the indoor space A side of the lower end portion of the side 30 of the guide rail 3 and forms a limited space with the lower end of the side 30. The rail lower bracket 10 is formed of a metal plate having a melting point higher than that of aluminum forming the guide rail 3, for example, a steel plate.

As shown in FIG. 13, the rail lower bracket 10 includes a lateral rectangular side surface 100, a lateral rectangular upper surface 101 shorter than the lateral surface 100, and an end surface formed at one end of the side surface 100 and the upper surface 101. 102. The side surface 100 includes a first portion 100A having the same length as the upper surface 101, and a second portion 100B extending beyond the other end of the upper surface 101. On the inner side surface of the first portion 100A of the side surface 100, a thermal expansion refractory member 11 is fixed by a rivet R so as not to exceed the other end of the upper surface 101.

As shown in FIGS. 11 and 12, the rail lower bracket 10 is fixed by a screw S with the second portion 100 </ b> B of the side surface 100 abutting the outer surface of the branch side 22 of the guide rail base frame 2 with each other. Yes. The width dimension (depth dimension) of the upper surface 101 and the end surface 102 of the rail lower bracket 10 is substantially the same as the width dimension of the mounting piece 23 of the guide rail support frame 2, and the rail lower bracket 10 is fixed to the guide rail base frame 2. In this state, the edges of the upper surface 101 and the end surface 102 are in contact with or close to the outer surface of the side 30 of the guide rail 3 (the surface facing the outer wall W). As shown in FIG. 11, the height dimension of the side surface 100 and the end surface 102 of the rail lower bracket 10 reaches a height position above the lower end 7 ′ of the reinforcing plate 7 of the guide rail 3 from the lower end of the guide rail 3. Has height. That is, the limited space has a height from the lower end of the guide rail 3 (the upper surface 60 of the lower frame 6 and the upper end of the recess 600) to a position higher than the lower end 7 ′ of the reinforcing plate 7. In a limited space surrounded by the first portion 100A of the side surface 100 of the rail lower bracket 10, the upper surface 101, the end surface 102, the mounting piece 23 of the guide rail base frame 2, the side 30 of the guide rail 3, and the upper surface 60 of the lower frame 6. Thus, the thermal expansion refractory member 11 is expanded. The limited space is formed along the indoor space A side of the lower end portion over substantially the entire width of the lower end portion of the side 30 of the guide rail 3 in the opening width direction. More specifically, in the aspect shown in FIG. 12, the base end side in the opening width direction of the limited space is on the mounting piece 23 of the guide rail base frame 2 located on the base end side with respect to the first base 32 </ b> A of the guide rail 3. It extends to.

As shown in FIG. 12, the front end side in the opening width direction of the limited space, that is, the end surface 102 of the rail lower bracket 10 is located at the front end portion of the side 30 of the guide rail 3, It is located closer to the tip side of the side 30 than the thermal expansion refractory member 8 provided inside the side 30. That is, the thermal expansion refractory member 8 is located in a portion corresponding to the limited space surrounded by the rail lower bracket 10 in the opening width direction, and faces the limited space via the side 30. The thermal expansion refractory member 11 provided in the rail lower bracket 10 faces the thermal expansion refractory member 8 via the side 30.

The thermal expansion refractory member 11 is a material that foams when heated to a temperature of 150 ° C. to 250 ° C., for example. The thermal expansion refractory member 11 is normally a thin plate, but when the thermal expansion refractory member 11 is heated to a predetermined temperature or more in a fire in a fully closed state of the opening, the thermal expansion refractory member 11 foams. And is surrounded by the first portion 100A of the side surface 100 of the rail lower bracket 10, the upper surface 101, the end surface 102, the mounting piece 23 of the guide rail base frame 2, the side 30 of the guide rail 3, and the upper surface 60 of the lower frame 6. It expands in the space, closes the indoor side portion of the lower end portion of the side 30 of the guide rail 3, prevents fire passing through the lower end portion of the guide rail 3, and ensures the fire resistance performance of the lower portion of the guide rail 3. .

In the illustrated embodiment, the rail lower bracket 10 is connected to the guide rail base frame 2, but the rail lower bracket 10 may be connected to the guide rail 3 and the lower frame 6. The portion where the thermal expansion refractory member 11 is provided is not limited to the inner surface of the first portion 100A of the side surface 100 of the rail lower bracket 10, but the inner surface of the upper surface 101 of the rail lower bracket 10, the inner surface of the end surface 102, the guide rail. The thermal expansion fireproof member 11 may be provided on the outer surface of the third side 30 and the upper surface 60 of the lower frame 6. If it is located in the space surrounded by the end face 102, the mounting piece 23 of the guide rail base frame 2, the side 30 of the guide rail 3, and the upper surface 60 of the lower frame 6, it is fixed to any of these members. It does not have to be. The shape of the rail lower bracket 10 is not limited to the illustrated mode, and the thermal expansion refractory member 11 located on the indoor side of the lower end portion of the side 30 of the guide rail 3 is expanded by heat at the time of fire. By doing so, the shape is not limited as long as it can form a limited space so as to cover the indoor side portion of the lower end portion of the side 30 of the guide rail 3.

A rail lower bracket and a thermal expansion refractory member according to another embodiment are shown in FIGS. The rail lower bracket 10 ′ has an L shape in a side view from a vertical piece 100 ′ and a horizontal piece 101 ′. By connecting the horizontal piece 101 ′ to the upper surface 60 of the lower frame 6 by a rivet R, a guide It is attached so as to form a limited space on the indoor space A side of the lower end portion of the side 30 of the rail 3. The vertical piece 100 ′ of the rail lower bracket 10 ′ and the lower end portion of the side 30 of the guide rail 3 are spaced apart from each other, and a limited space is formed between them, and the vertical piece 100 ′ faces the limited space. And the thermal expansion fireproof member 11 is attached.

As shown in FIG. 14, the vertical piece 100 ′ of the rail lower bracket 10 ′ extends from the lower end of the side 30 of the guide rail 3 to a height exceeding the lower end 7 ′ of the reinforcing plate 7 of the guide rail 3. . That is, the limited space has a height from the lower end of the guide rail 3 to a position higher than the lower end 7 ′ of the reinforcing plate 7. As shown in FIG. 15, the limited space is formed along the indoor space A side of the lower end portion over substantially the entire width of the lower end portion of the side 30 of the guide rail 3 in the opening width direction. More specifically, the base end edge of the rail lower bracket 10 ′ is in contact with or close to the mounting piece 23 of the guide rail base frame 2, and the base end side in the opening width direction of the limited space is the first end of the guide rail 3. 1 is located on the base end side with respect to the base 32A. The tip edge of the rail lower bracket 10 ′ is located at the tip portion of the side 30 of the guide rail 3, and the tip side of the side 30 relative to the thermal expansion refractory member 8 provided inside the side 30 of the guide rail 3. Is located. That is, the thermal expansion refractory member 8 is located in a portion corresponding to the limited space surrounded by the rail lower bracket 10 ′ in the opening width direction, and faces the limited space via the side 30. The thermal expansion refractory member 11 attached to the rail lower bracket 10 ′ faces the thermal expansion refractory member 8 via the side 30.

The limited space formed on the indoor space A side at the lower end of the side 30 of the guide rail 3 by the rail lower bracket 10 ′ is open at the tip, but the thermal expansion refractory member 11 within the limited space. Is expanded in a space limited by the side 30 and the vertical piece 100 ′ that are opposed to each other and the upper surface 60 of the lower frame 6, and the indoor space A side at the lower end of the side 30 of the guide rail 3. Is supposed to be blocked.

A rail lower bracket and a thermal expansion refractory member according to still another embodiment are shown in FIGS. The rail lower bracket 10 '' includes an inclined piece 100 '' and an end face 102 '' formed on one end (front end side) of the inclined piece 100 ''. The upper part of the inclined piece 10 ″ is a vertical piece 100A ″, and the rail lower bracket 10 ″ is connected to the side 30 of the guide rail 3 by a rivet R so that the guide rail 3 3 is attached so as to form a limited space on the side of the indoor space A at the lower end portion of the side edge 30. The limited space is formed by the inclined piece 100 ″, the lower end portion of the side 30 of the guide rail 3, the end surface 102 ″, and the upper surface 60 of the lower frame 6. The inclined piece 100 ″ includes the limited space. Facingly, a thermal expansion refractory member 11 is attached.

As shown in FIG. 16, the inclined piece 100 ″ of the rail lower bracket 10 ″ extends from the lower end of the side 30 of the guide rail 3 to a height exceeding the lower end 7 ′ of the reinforcing plate 7 of the guide rail 3. ing. That is, the limited space has a height from the lower end of the guide rail 3 to a position higher than the lower end 7 ′ of the reinforcing plate 7. As shown in FIG. 17, the limited space is formed along the indoor space A side of the lower end portion over substantially the entire width of the lower end portion of the side 30 of the guide rail 3 in the opening width direction. More specifically, the base end edge of the rail lower bracket 10 ″ is in contact with or close to the mounting piece 23 of the guide rail base frame 2, and the base end side in the opening width direction of the limited space is the guide rail 3. It is located closer to the base end side than the first base 32A. The tip edge of the rail lower bracket 10 ″ is located at the tip portion of the side 30 of the guide rail 3, and the tip of the side 30 rather than the thermal expansion refractory member 8 provided inside the side 30 of the guide rail 3. Located on the side. That is, the thermal expansion refractory member 8 is located in a portion corresponding to the limited space surrounded by the rail lower bracket 10 ″ in the opening width direction, and faces the limited space via the side 30. . The thermal expansion refractory member 11 attached to the rail lower bracket 10 ″ is opposed to the thermal expansion refractory member 8 through the side 30.

When the thermal expansion refractory member 11 is expanded in the limited space formed on the indoor space A side at the lower end of the side 30 of the guide rail 3 by the rail lower bracket 10 ″, the side 30 and the inclined piece 100 ″ are expanded. And it expand | swells in the space limited by the end surface 102 '' and the upper surface 60 of the lower frame 6, and closes the indoor space A side of the lower end of the side 30 of the guide rail 3. FIG.

[Fire prevention structure at the lower end of the shutter curtain]
When the window opening is fully closed, the lower part of the seat plate 51 is received in a recess 600 formed in the lower frame 6. More specifically, in the fully closed state of the window opening, a portion of the plate-like portion 510 of the seat plate 51 that is below the first piece 513 extends into the recess 600. The indoor portion of the lower portion faces the inner front side 63 of the lower frame 6. The outdoor side surface portion of the portion below the first piece 513 of the seat plate 51 faces the outdoor front side 65, and the curved portion 512 at the lower end of the seat plate 51 is separated from the bottom side 64. . Since the lower part of the seat plate 51 is received in the recess 600, the interior side communicates linearly even if a gap is formed between the lower end of the seat plate 51 and the bottom surface (bottom 64) of the recess 600. No space is formed.

The fire prevention structure at the lower end portion of the shutter curtain further includes a reinforcing plate member 13 provided on the lower frame 6 and a thermal expansion fireproof member 12 provided on the seat plate 51. The reinforcing plate 13 is made of a metal plate having a higher melting point than aluminum, for example, a steel plate. In one embodiment, a plurality of reinforcing plate members 13 are arranged at intervals along the length direction (opening width direction) of the lower frame 6, but are reinforced over the entire length of the lower frame 6. A plate material may be provided. As shown in FIGS. 3, 11, and 14, the reinforcing plate 13 includes a horizontal side 130 that extends horizontally along the bottom side 64 of the recess 600 of the lower frame 6 in the expected direction (inside / outside direction) of the lower frame 6, A vertical side 131 extending vertically from the outdoor side end of the horizontal side 130 along the outdoor front side 65 of the lower frame 6 and a vertical side 132 extending vertically from the indoor side end of the horizontal side 130 vertically. And an upper side 133 extending gently downward from the upper end of the vertical side 132 toward the indoor side, and a hanging side 134 depending from the end of the upper side 133 on the indoor side.

The horizontal side 130 of the reinforcing plate 13 extends horizontally along the lower surface of the bottom side 64, and the vertical side 131 passes through the outdoor side end of the bottom side 64 and extends vertically along the rising outdoor front side 65. A folded piece 650 formed at the upper end of the outdoor front side 65 is engaged with the upper end of the vertical side 131. The lower surface of the lower side 61 of the lower frame 6 is in contact with the upper side 133 of the reinforcing plate 13 and is connected by a rivet R. The reinforcing plate 13 is fixed to the outer wall W with screws (not shown) with the hanging side 134 in contact with the hanging side 66 of the lower frame 6 so as to overlap each other. Further, the lower end portion of the guide rail base frame 2 extends downward beyond the upper surface 60 of the lower frame 6, and the reinforcing plate member 13 (the reinforcing plate member positioned at both ends in the opening width direction of the plurality of reinforcing plate members 13). It is connected with a screw S to a hanging side 135 formed by the portion 13).

A part of the lower part of the plate-like part 510 received in the recessed part 600 in the fully closed state of the window opening part, the first piece 513 is a part that does not face the outdoor space, and these parts are the lower frame 6. A gap is formed between the indoor side front side 63 and the upper side 60 (portions not facing the outdoor space), and the seat plate 51 is provided with the thermal expansion refractory member 12 so as to face the gap. In the illustrated embodiment, the thermal expansion refractory member 12 is a long plate body or sheet body having a predetermined plate thickness and extending in the length direction (opening width direction) of the seat plate 51. In one aspect, both ends in the length direction of the thermal expansion refractory member 12 extend into the guide space G of the guide rail 3.

In one aspect, the thermal expansion refractory member 12 is provided over substantially the entire length of the seat plate 51. The thermal expansion refractory member 12 does not necessarily have a length corresponding to the substantially entire length of the seat plate 51. For example, the thermal expansion refractory member 12 may be arranged in the length direction of the seat plate 51. You may provide so that the area | region corresponding to the resin-made elements provided in may be included. Examples of the resin element include elements of a locking device (for example, a resin operation lever and a resin cover of the locking device) provided on the side surface of the room. The resin element may melt and ignite more easily than the aluminum forming the seat plate 51.

The thermal expansion refractory member 12 is a material that foams when heated to a temperature of 150 ° C. to 250 ° C., for example. The thermal expansion refractory member 12 is normally accommodated in the pocket portion. However, when the thermal expansion refractory member 12 is heated to a predetermined temperature or more in a fire in a fully closed state of the opening, the thermal expansion refractory member 12 is heated. Foams into a thick state, expands so as to protrude from the pocket portion 514, closes the space between the lower portion of the seat plate 51 and the lower frame 6 over the entire width of the opening, The fire around the inner space is prevented and the fire resistance of the lower frame 6 is ensured.
[Operational effect of fire prevention structure according to this embodiment]

In the fire prevention structure of the window shutter configured as described above, when a fire occurs on the outdoor side, the side 31 of the guide rail 3 facing the outdoor side may be exposed to a high temperature. Even if a part of the side 31 of the guide rail melts or the slat is deformed and bent by heat, the side of the reinforcing plate 7 is provided on the inner side of the side 31 of the guide rail over the entire height and width. Since the side 71 is provided, the guide function as the guide rail and the holding function of the slat end are maintained. The width of the side edge 70 of the reinforcing plate 7 provided on the inner side of the side edge 30 is shorter than the width of the side edge 71, but the side edge 30 does not directly face the outdoor side, so it is compared with the side edge 31. And the effect of heat is small. Since the side 71 of the reinforcing plate 7 is located on the inner surface of the side 31 facing the outdoor space so as to face the end portion of the slat received in the guide space G, the side 71 holds the guide function. Thus, the slat end portion is prevented from slipping out of the guide space G to the outdoor space, an appropriate gap between the side 30 and the slat end portion is maintained, and the expanded thermal expansion refractory member 8 eliminates the gap. Can be closed. The reinforcing plate 7 is a so-called second guide rail. Even if the side 31 of the guide rail 3 is melted, the side 71 facing the slat end received in the guide space G is used as the guide side. By functioning and restricting the movement of the slat end portion to the outdoor side, the slat end portion is maintained in the guide space G, and accordingly, an appropriate distance between the slat end portion and the side 30 that does not face the outdoor space. The thermal expansion refractory member 8 provided on the side 30 is expanded and the gap between the slat end portion in the guide space G and the side 30 is closed while maintaining the clearance.

When the thermal expansion refractory member 8 is heated to a predetermined temperature or more in a fire in the fully closed state of the opening, the thermal expansion refractory member 8 foams and expands to become a thick state and expands so as to protrude from the pocket portion 35. Thus, the space between the side 30 and the interior side surface of the widthwise end of the shutter curtain 5 (slat 50) received in the internal space of the guide rail 3 is blocked over the entire height of the opening to shield the heat. Demonstrate performance. When the thermal expansion refractory member 8 is heated at the time of a fire, it foams and expands so as to cover the moisture provided in the pocket portion 33, so that the ignition to the moisture is prevented. Therefore, even if the moire provided in the resin portion at the end of the slat 50 or the pocket portion 34 burns, the flame is prevented from spreading through the inner space of the guide rail 3 to the indoor side.

When a fire occurs on the outdoor side, the upper part of the side 20 of the guide rail base frame 2 facing the outside may be exposed to high temperatures. Since the side 90 of the reinforcing plate 9 is provided over substantially the entire width of the side 20 on the inner side of the side 20, the upper part of the side 20 of the guide rail base frame 2 has melted. In this case, the through portion is prevented from being formed. Since the reinforcing plate 9 is connected to a portion of the guide rail base frame 2 that does not face the outdoor space (a portion that is covered with the decorative member 211 on the branch side 22 and the side 20), By connecting the sides of the reinforcing plate member 9, the connection of the reinforcing plate member 9 to the guide rail base frame 2 is maintained, so that the reinforcing function of the guide rail base frame 2 by the side of the reinforcing plate member 9 (the side facing the outdoor space) The shielding function when the side 20 is melted can be maintained.

In the fully closed state of the opening, there is a possibility that the lower end of the guide rail 3 is melted by heat at the time of fire, but the limited space is formed by surrounding the indoor space A side of the lower end portion of the side 30 of the guide rail 3. Thus, the rail lower bracket 10 is provided, and the thermal expansion refractory member 11 is disposed in the limited space. Therefore, when the thermal expansion refractory member 11 is heated to a predetermined temperature or more during a fire, the thermal expansion refractory member 11 is In the space surrounded by the first portion 100A of the side surface 100 of the rail lower bracket 10, the upper surface 101, the end surface 102, the mounting piece 23 of the guide rail base frame 2, the side 30 of the guide rail 3, and the upper surface 60 of the lower frame 6. By inflating, the indoor side part of the lower end part of the side 30 of the guide rail 3 is closed, and the fire passing through the lower end part of the guide rail 3 is prevented and the fire resistance performance of the lower part of the guide rail 3 is ensured. To.

Since the lower half of the seat plate 51 is received in the recess 600, even if the seat plate 51 is deformed to some extent, the seat plate 51 is positioned in the recess 600, so that the interior and the exterior communicate linearly. No space is formed. In the fully closed state of the window opening, the vertical side 131 of the reinforcing plate 13 is positioned facing the outdoor side of the lower portion of the plate-like portion 510 of the seat plate 51 and over the length direction of the seat plate 51. ing. When the window opening is fully closed, the seat plate 51 may be thermally deformed by heat at the time of a fire and may be displaced so as to be lifted to the outside of the room. By abutting on the vertical side 131 of the plate member 13, the displacement of the lower part of the seat plate 51 to the outdoor side is restricted, and the thermal deformation of the seat plate 51 prevents fire between the recess 600 and the lower part of the seat plate 51. Preventing disadvantageous gaps from occurring. The indoor portion of the lower portion of the seat plate 51 received in the recess 600 forms a gap with the portion of the lower frame 6 that does not face the outdoor space, and the thermally expanded refractory member 12 that thermally expands the gap closes the gap. However, since the vertical part 131 of the reinforcing plate member 13 restricts the lower part of the seat plate 51 from being greatly displaced to the outdoor side, the lower part 6 has an indoor part and a lower frame 6. The gap between them is properly maintained, and the thermal expansion refractory member 12 can satisfactorily close the gap.

When a fire occurs on the outdoor side with the window opening fully closed, the outdoor front side 65 of the lower frame 6 may be drooped and deformed so as to fall down to the outdoor side due to heat. In the present embodiment, the vertical side 131 of the L-shaped reinforcing plate member 13 in side view extends along the entire height of the outdoor front side 65 of the lower frame 6 and the upper end of the outdoor front side 65 of the lower frame 6. Is locked to the upper end of the vertical side 131 by a folded piece 650. Therefore, even when the outdoor front side 65 of the lower frame 6 is deformed so as to hang down to the outdoor side due to heat, the deformation is restricted by the vertical side 131 of the reinforcing plate 13.

When a fire occurs and the thermal expansion refractory member 12 is heated to a predetermined temperature or higher in the fully closed state of the window opening, the thermal expansion refractory member 12 foams and expands to become thick and protrudes from the pocket portion. The space between the indoor side portion of the lower part of the seat plate 51 and the indoor front side 63 of the lower frame 6, between the first piece 513 of the seat plate 51 and the upper side 60 of the lower frame 6. The space between the curved portion 512 at the lower end of the seat plate 51 and the extended lower side 512 is closed over the entire width of the opening to exert fireproof performance, and the flame is prevented from flowing through the recess 600.

In this embodiment, a fire prevention structure is adopted in the guide rail structure (guide rail, guide rail base frame), seat plate structure, and lower frame structure, and the window shutter device as a whole is better than the conventional window shutter device. Fireproof performance can be provided.

The present invention is used as a structure of a window shutter device.

2 guide rail base frame 20 side 21 base 22 branch side 23 mounting piece 24 mounting piece 3 guide rail 30 side 31 side 32 bottom 36 mounting piece 37 mounting piece 5 shutter curtain 50 slat 7 reinforcing plate 70 side 71 side Side 72 Bottom side 8 Thermal expansion fire-resistant member 9 Reinforcement plate 90 First side edge 91 First front side 92 Second side edge 93 Second front side 94 Upper side 95 Lower side 10 Rail lower bracket 100 Side surface 101 Upper surface 102 End surface 11 Thermal expansion fire-resistant member A indoor space

Claims (5)

The guide rail of the window shutter includes a first side on the side close to the outer wall and a second side on the side far from the outer wall and facing the outdoor space, and a guide rail is provided on the base end portion of the first side. It is supported by the guide rail support frame by connecting to the support frame,
The guide rail support frame has a base end attached to the outer wall, and has a side to which a base end side portion of the first side of the guide rail is connected to the front end, and an outer side surface of the side is in an outdoor space. The inner side surface of the side side faces the indoor space formed between the shutter curtain in the fully closed state of the opening and the outer wall, and includes at least an upper part of the inner side surface of the side side A fire prevention structure for a window shutter, in which a reinforcing plate made of a material having a melting point higher than that of a material for forming a guide rail base frame is provided so as to be in contact with, close to, or spaced apart from the area. A branch side extending to the indoor space side perpendicular to the side is formed on the tip side of the side of the guide rail support frame,
The reinforcing plate member includes: a side that is in contact with, close to, or spaced apart from the surface area; and a front side that is in contact with a surface area including at least an upper portion of the branch side, and the branch side of the guide rail support frame The fire prevention structure of the window shutter according to claim 1, wherein the front side of the reinforcing plate member is fastened. The side of the guide rail support frame and the side that is in contact with or close to or away from the surface area of the reinforcing plate are fastened by a fastening member,
The base end sides of both end portions in the opening width direction of the lintel member located on the lower surface of the shutter case are fastened to the side of the guide rail support frame and the side of the reinforcing plate, also using the fastening member. A fire prevention structure for a window shutter according to claim 1. The reinforcing plate member includes a surface portion that is positioned at an upper portion of the first side of the guide rail and extends along the first side of the guide rail. The bearing piece extending toward the
The fire prevention structure of the window shutter according to claim 3, wherein tip ends of both end portions of the lintel member in the opening width direction are placed on the support piece.   The reinforcing plate member is provided at a position above the first side of the guide rail and includes a surface portion extending along the first side of the guide rail. An extension part extending beyond the tip of one side is formed, and a contacted piece with which a seat plate at the lower end of the shutter curtain comes into contact with the lower part of the extension part is integrally formed. The fire prevention structure of the window shutter of any one of Claims 1-4.

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