JP2013053422A - Fire prevention structure for sill of window shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sill of window shutter which has enhanced fireproof performance.SOLUTION: A sill 6 of window shutter comprises a rising side 64 which is located on the outdoor side of a lower part of a back plate 51 at the bottom edge of a shutter curtain 5 in a state that the window opening is totally closed, and a base side 610 which is located on the lower side of the lower part of the back plate 51. The sill 6 is provided with a reinforcement plate 13 comprising a rising side 131 and a base side 130 and being formed of a material having a melting point higher than that of the material to form the sill 6 in such a manner that the respective rising sides extend along each other and the respective base sides extend along each other. In a state that the window opening is totally closed, the rising side 131 of the reinforcement plate 13 is located opposite to the outdoor side of the lower part of the back plate 51.

Description

The present invention relates to a fire prevention structure for a lower frame of 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 ends of the shutter curtain in the width direction are received, and the metal seat plate at the lower end of the shutter curtain is not in contact with the metal lower frame in a manner that does not form a linear through gap in the indoor / outdoor direction. They are close to each other and inherently have a predetermined fire prevention performance.

However, in order to ensure 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 fire prevention performance of the window shutter by improving the fire prevention performance of the lower part of the window opening portion closed by the window shutter, particularly the lower frame (draining plate).

Although what provided the reinforcing material and the structural material in the draining board of the window shutter is described in patent documents 1-3, there is no viewpoint of improving the fire prevention performance of the draining board.
Japanese Utility Model 05-52009 JP2007-146537 JP2008-75293

The object of the present invention is to improve the fireproof performance of the lower frame of the window shutter.

The technical means adopted by the present invention are:
The lower frame of the window shutter has a rising side located outside the lower part of the seat plate at the lower end of the shutter curtain in a fully closed state of the window opening, and a bottom side located below the lower part of the seat plate. Prepared,
The lower frame is formed of a material having a melting point higher than that of the material forming the lower frame, and a reinforcing plate having a rising edge and a bottom edge is provided so that the rising edges are aligned with each other, and the window opening is provided. In the fully closed state, the rising edge of the reinforcing plate member is positioned facing the outdoor side of the lower part of the seat plate (including when facing the rising edge of the lower frame). It is a fire prevention structure of the lower frame.
The rising side of the reinforcing plate restricts the lower part of the seat plate from being displaced to the outdoor side due to thermal deformation of the seat plate, and restricts thermal deformation that falls to the outdoor side of the rising side of the lower frame.

In one aspect, the lower frame of the window shutter includes a recess that receives a lower portion of the seat plate at the lower end of the shutter curtain in a fully closed state of the window opening, and a draining surface that is located on the indoor side of the recess,
The concave portion includes a first side located on the outdoor side with respect to the seat plate received in the concave portion, a second side located on the indoor side with respect to the seat plate, and lower ends of the first side and the second side. , And the first side forms the rising side and the connection side forms the bottom side.

In one aspect, the upper end of the rising side is formed with a locking piece formed in a folded shape inside,
The rising side of the reinforcing member extends along the inner surface of the rising side of the lower frame, and a locking piece at the upper end of the rising side of the lower frame is locked to the upper end portion of the rising side of the reinforcing member. Has been.
By doing so, the rising side of the reinforcing member regulates thermal deformation such that the rising side of the lower frame falls to the outdoor side.
In the case where the upper edge of the rising edge of the reinforcing plate is locked with the locking piece at the upper edge of the lower frame, the rising edge of the lower frame can be deformed to the outside without connecting the rising edges. The rising edge of the reinforcing plate is regulated. The rising side is located on the inner surface of the first side, and since it is not necessary to connect the rising sides with screws or the like, the appearance of the lower frame is not impaired.
Alternatively, in another aspect, by connecting the rising side of the reinforcing member to the rising side of the lower frame, the vertical side may be restricted from being deformed to fall outside the rising side of the lower frame.
Alternatively, by providing the reinforcing plate so that the rising side of the reinforcing member comes into contact with the outer surface of the rising side of the lower frame, the rising side of the reinforcing member regulates deformation that falls to the outside of the rising side of the lower frame. You may do it.

In one aspect, the bottom of the reinforcing plate extends horizontally along the bottom surface of the bottom of the lower frame,
The rising side of the reinforcing plate extends perpendicularly along the inner surface of the rising side of the lower frame through the outdoor side end of the bottom side of the lower frame.
In this case, an opening groove is formed on the bottom side of the lower frame, the rising side of the reinforcing plate material is inserted into the opening groove from the lower side of the lower frame, and the upper end of the rising side is inserted into the groove part formed by the locking piece. In addition, since the bottoms only need to be brought into contact with each other, it is easy to attach the reinforcing plate to the lower frame.

In one aspect, the lower frame includes a lower side that is positioned below the upper side that forms the draining surface and extends toward the indoor side, and the reinforcing plate is directed toward the indoor side along the lower surface of the lower side. The lower side and the support side are connected by screws, screws or the like.
Since such a connection part is not exposed to the outside, the aesthetic appearance is not impaired.
In addition, the strength of the reinforcing plate can be increased by increasing the width of the horizontal side of the reinforcing plate (the size in the expected direction of the lower frame), and the heat of the lower part of the seat plate and the rising side of the lower frame can be increased. It can also resist deformation well.

In one aspect, the dimension of the reinforcing plate member in the opening width direction is shorter than the dimension of the lower frame in the opening width direction, and a plurality of reinforcing plate members are spaced from each other in the opening width direction in the lower frame. It is provided. In this case, in the fully closed state of the window opening, the rising side of the reinforcing plate member is located across the length of the seat plate, facing the outside of the lower part of the seat plate.
In the case where the vertical side of the reinforcing plate penetrates the outdoor side end portion of the bottom side, an opening groove is formed in advance in the opening width direction on the bottom side of the lower frame.
The rising side of the reinforcing plate material may be formed from a long portion extending over substantially the entire width of the opening.

  In the present invention, since the rising side of the reinforcing plate material is located facing the outdoor side of the lower portion of the seat plate, the seat plate is thermally deformed by the heat at the time of the fire in the fully closed state of the window opening, Although there is a risk of displacement so as to be lifted to the outside of the room, displacement of the lower part of the seat plate toward the outdoor side is restricted by the lower part of the seat plate that is about to be displaced to the outer side coming into contact with the rising edge of the reinforcing plate. Thus, it is possible to prevent a disadvantageous fire prevention from occurring between the rising edge of the lower frame and the lower part of the seat plate due to thermal deformation of the seat plate.

  In the present invention, the rising edge of the lower frame, which is easily deformed so as to fall to the outside of the room due to the influence of heat at the time of the fire, is reinforced by the reinforcing plate material that has better fire resistance than the rising edge, so the heat at the time of the fire This prevents the rising edge of the lower frame from falling outside the room and forming a disadvantageous space for fire and smoke prevention that penetrates the interior and exterior between the rising edge and the lower part of the seat plate.

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. (A) A cross-sectional view of the window shutter device at an upper portion of the guide rail and the guide rail base frame, (B) a cross-sectional view of the window shutter device at an intermediate portion of the guide rail and the guide rail base frame, (C) the guide rail and (D) Cross-sectional view of the lower frame viewed from the lower part of the guide rail and the guide rail base frame (the seat plate at the lower end of the shutter curtain is omitted), (E ) A cross-sectional view of the lower frame part (the seat plate at the lower end of the shutter curtain is omitted). The left figure is a sectional view of the reinforcing plate for guide rail and a front view of the upper part, and the right figure is a side view showing the upper part of the guide rail structure. It is a cross-sectional view of the upper part of the guide rail structure. It is a transverse cross section showing other embodiments of a guide rail structure. It is a transverse cross section of a guide rail, and shows the state where a thermal expansion fireproof member expanded. It is a transverse cross section of a guide rail, and shows other modes of the attachment position of a thermal expansion fireproof member. It is the cross-sectional view and longitudinal cross-sectional view of the lower part of a window shutter apparatus. It is a longitudinal cross-sectional view of the lower part of a window shutter apparatus. It is a longitudinal cross-sectional view of the lower part of the window shutter apparatus which shows other embodiment of a lower frame. It is a figure which shows the connection in the opening part full-closed state of the seat plate provided with other shapes, and a lower frame. It is a figure which shows the connection in the opening part full-closed state of the seat plate provided with other shapes, and a lower frame. It is a front view of the lower part and width direction edge part of a window shutter apparatus. It is a cross-sectional view of the lower part of the window shutter device and the end in the width direction. It is a longitudinal cross-sectional view of the lower part of a window shutter apparatus, and has shown the state which the thermal expansion fireproof member expanded. (A)-(C) is a figure which shows a resin-made stopper main body, (D), (E) is a figure which shows a metal stopper holding member, (F) is a figure which shows the assembled state.

[A] Overall Configuration of Window Shutter In FIG. 1, the left figure is a front view of the window shutter device as seen 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 a fully closed 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. In the present specification, the same constituent elements are denoted by the same reference numerals throughout the drawings, and descriptions of other parts can be used as descriptions of the elements having the same reference numerals.

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.

In the embodiment shown in FIG. 2, 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.

[B] Configuration of Guide Rail Structure [B-1] The guide rail guide rail 3 is an elongated member that is formed of an aluminum mold and extends perpendicularly to the height direction of the window opening, as shown in FIG. Furthermore, it has a substantially U-shaped shape in plan view from the side 30, the side 31 positioned on the outdoor side with respect to the side 30, and the bottom 32. In relation to the outer wall W of the building, the side 30 is the side close to the outer wall W, and the side 31 is the side far from the outer wall W. 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 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 ends of the side edges 30 and 31 located in the lower part of the shutter case 1 are curved away from each other to form curved portions 300 and 310, and the upper part of the guide rail 3 is widened. ing.

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. 33 'and 34' (refer FIG. 3) are provided facing each other. The width of the internal space is narrowed by the pocket portions 33, 34, and the indoor and outdoor surface portions of the widthwise end portion of the shutter curtain 5 received in the internal space are mohair 33 'provided in the pocket portions 33, 34, 34 'is contacted. 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.

The pocket portion 33 is formed at the tip of the side 30, and a first protrusion 330 that extends in the height direction, and a second protrusion 331 that is positioned behind the first protrusion 330 and extends in the height direction. And is formed in the space between. The first projecting piece 330 is projected into the internal space from the tip of the side 30 toward the side 31, and the second projecting piece 331 is the internal space from the inner surface of the side 30 toward the side 31. Projected inside.

In the side 30, a pocket 35 for accommodating the thermal expansion refractory member 8 is formed in the height direction adjacent to the rear of the pocket 33 (the bottom side of the internal space, that is, the bottom 32). Yes. As shown in FIG. 5, the pocket portion 35 is formed at a portion located on the opening side of the inner surface of the side 30 when viewed in the entire width dimension of the side 30. The pocket portion 35 is formed in a space between the second projecting piece 331 and the third projecting piece 332 that is located behind the second projecting piece 331 and extends in the height direction. The third projecting piece 332 projects from the inner surface of the side 30 toward the side 31 in the internal space. In the illustrated embodiment, the projecting dimensions of the first projecting piece 330, the second projecting piece 331, and the third projecting piece 332 are the same. A protruding edge 3310 is formed from the tip of the second protruding piece 331 toward the rear, and a protruding edge 3320 is formed from the tip of the third protruding piece 332 toward the front (opening side of the internal space). . A protruding edge 3321 is formed from the tip of the third protruding piece 332 toward the rear. In the illustrated embodiment, the width dimension of the pocket portion 35 (dimension in the depth direction of the internal space), that is, the distance between the second projecting piece 331 and the third projecting piece 332 is the width dimension of the pocket portion 33 (internal space). In the depth direction), that is, larger than the distance between the first projecting piece 330 and the second projecting piece 331.

The pocket 34 is formed at the tip of the side 31 and extends in the height direction. The first protrusion 340 is positioned behind the first protrusion 340 and extends in the height direction. It is formed in the space between. The first projecting piece 340 is projected into the inner space from the tip of the side 31 toward the side 30, and the second projecting 341 is the inner space from the inner surface of the side 31 toward the side 30. Projected inside. In the illustrated embodiment, the projecting dimension of the second projecting piece 341 is larger than the projecting dimension of the first projecting piece 340. A projecting edge 3410 is formed from the side of the second projecting piece 341 toward the rear.

In the mode shown in FIG. 5, a surface extending in parallel to the side 30 through the tip of the first protrusion 330 on the side 30 and parallel to the side 31 through the tip of the second protrusion 341 on the side 31. A guide space G that receives and guides both ends of the shutter curtain 5 in the width direction is formed between the first and second surfaces.

Mounting pieces 36 and 37 are extended and formed on the side 30 close to the outer wall W of the guide rail 3 so as to face 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 the front end side 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 a folded locking piece formed at the proximal end portion of the side 30, and the attachment piece 37 is closer to the distal end portion of the side 30 and the proximal end than the pocket portion 33. It is a connecting piece that is located on the side and extends toward the outer wall W perpendicular to the side 30.

[B-2] Guide rail base frame The guide rail base frame 2 is formed of an aluminum mold, is a long member extending perpendicularly to the height direction of the window opening, and has side edges 20 and 21 and a bottom edge 22. And a substantially U-shaped shape in plan view, and an internal space is formed between the side 20 and the side 21. The guide rail base frame 2 is fixed to the outer wall W with a screw S with the bottom side 22 abutting against the outer wall W, and the side edges 20 and 21 are spaced apart and extend substantially perpendicular to the outer wall W. ing. In the state where the guide rail base material 2 is attached to the outer wall W, the side 20 faces the outside (outdoor), and the side 21 faces the inside (opening side).

Mounting pieces 23 and 24 to be attached to the mounting pieces 36 and 37 of the guide rail 3 are formed at the tip portions of the side edges 20 and 21. The mounting pieces 36 and 37 of the guide rail 3 are respectively connected to the guide rails. The guide rail 3 is attached to the distal end side of the guide rail base frame 2 by being attached to the mounting pieces 23 and 24 of the base frame 2. In the illustrated embodiment, the mounting piece 23 is a folded locking piece, the mounting piece 24 is a connecting piece, and the mounting piece 36 of the guide rail 3 is slidably locked to the mounting piece 23 of the guide rail base frame 2 from the length direction. In this state, the mounting piece 37 of the guide rail 3 and the mounting piece 24 of the guide rail base frame 2 are brought into contact with each other and 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 bottom 32 of the guide rail 3 are flush with each other. It will 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 mode (see FIG. 5A).

[B-3] Reinforcing Plate Material for Guide Rail As shown in FIGS. 4 and 5, a reinforcing plate material 7 is provided in the internal space of the guide rail 3. The reinforcing plate member 7 is formed of a metal plate having a melting point higher than that of aluminum, for example, a steel plate, and is a long member extending perpendicularly to the height direction of the window opening, and includes side sides 70 and 71 and a bottom side 72. And has a substantially U-shape in plan view. 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. As shown in FIG. 2, the inclined side 720 is located in the shutter case 1. By extending the upper end of the bottom side 72 of the reinforcing plate 7 above the upper ends of the side sides 70 and 71, it is possible to prevent a step from being formed at an upper portion of the base side 72.

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 bottom 32 of the guide rail 3. The dimension between the outer surfaces of the side edges 70 and 71 of the reinforcing plate 7 and the width dimension of the bottom edge 72 substantially correspond to the dimension between the inner surfaces of the side edges 30 and 31 of the guide rail 3 (slightly smaller than the dimension between the inner surfaces). When the reinforcing plate 7 is received in the internal 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 base 32, and the outer surface of the side 70 is the side 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. Further, the tip of the side edge 70 of the reinforcing plate 7 is covered with the protruding edge portion 3321, the tip of the side edge 71 is covered with the protruding edge portion 3410, and the slat 50 received in the guide space has the side edge 70, It is prevented from being caught at the tip of 71. In the illustrated embodiment, the reinforcing plate 7 is connected by a rivet R with the side 70 abutting on the side 30 of the guide rail 3, and a slight gap is provided between the side 71 and the side 31. Is formed.

Although the side dimension 70 of the reinforcing plate 7 has a shorter width dimension (dimension in the depth direction of the internal space) than the side edge 71, as shown in FIGS. 3 (A) to 3 (C) and FIG. In a state where both end portions in the width direction are received in the guide space of the guide rail 3, the side edge 70 faces the indoor side surface portion of the shutter curtain 5 (slat 50), and the side edge 71 is the shutter curtain 5 (slat 50). It faces the outdoor side surface portion. That is, the first side edge 70 and the second side edge 71 of the reinforcing plate 7 have a portion facing the surface portion of the slat 50 received in the guide space G. Alternatively, the first side 70 may not necessarily face the surface portion of the slat 50 received in 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 front end of the side edge 71 is received in a groove between the second protrusion piece 341 (protrusion edge portion 3410) that forms the pocket portion 34 and the side edge 31. 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 shown in FIG. 5, the side 70 has a width that is approximately half the width of the side 30. The tip of the side edge 70 is received in a groove between the third protrusion piece 332 (protrusion edge 3321) that forms the pocket portion 35 and the side edge 30. In the illustrated embodiment, a substantially U-shaped reinforcing plate material is shown from the side sides 70 and 71 and the bottom side 72. However, in the function of reinforcing a portion that is susceptible to heat during a fire, the reinforcing plate material is at least It suffices if it is provided on the inner surface of the part facing the outdoor space. For example, in FIG. 5 (the side 31 and the bottom 32 face the outdoor space, and the side 30 does not face the outdoor space), a L-shaped reinforcing plate material is formed from the side 71 and the bottom 72. (In this case, the upper and lower ends of the reinforcing plate extending in the height direction may be fixed to the upper frame and the lower frame). On the other hand, as described above, the reinforcing plate 7 is connected by the rivet R with the side 70 abutting on the side 30 of the guide rail 3. Since the side 30 of the guide rail 3 does not face the outdoor space, the side 30 is less affected by the heat of the fire generated on the outdoor side than the side 31 and the bottom 32 and is reinforced against the side 30 that is difficult to melt. By connecting the plate material 7, the connection of the reinforcing plate material 7 to the guide rail 3 can be maintained, so that the guide function by the side 71 of the reinforcing plate material 7 can be maintained and the slat end portion can be maintained in the guide space G. it can.

[B-4] Thermal expansion fire-resistant member of guide rail 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. The thermal expansion fireproof member 8 of the property 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. 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 the event of a fire in the window opening fully closed state, the thermal expansion refractory member 8 foams and expands to become a thick state, and as shown in FIG. It expands so as to protrude from the portion 35, and the end portion of the side 30 (including the pocket portion 33) and the end portion in the width direction of the shutter curtain 5 (slat 50) received in the internal space of the guide rail 3. The space between the interior side surface and the interior side wall is closed over the entire height of the opening, and fire around the inner space of the guide rail 3 is prevented to ensure the fire resistance performance of the guide rail 3.

[B-5] Reinforcement Plate Material for Guide Rail Underframe As shown in FIG. 5, a reinforcement plate material 9 is provided in the internal space of the guide rail underframe 2, that is, the space surrounded by the side edges 20 and 21 and the bottom edge 22. It is. The reinforcing plate 9 is formed of a metal plate having a melting point higher than that of aluminum, for example, a steel plate, and is a long member extending perpendicularly to the height direction of the window opening, and includes a side 90, a bottom 91, And has a substantially L shape in plan view. The side 90 of the reinforcing plate 9 is in contact with or close to the inner surface of the side 20 of the guide rail base frame 2, and the bottom 91 of the reinforcing plate 9 is in contact with the inner surface of the bottom 22 of the guide rail base frame 2. Or close. The reinforcing plate 9 functions as a shield that blocks the penetration when a portion of the guide rail base frame 2 facing the outdoor space melts and penetrates.

The width dimension of the side edge 90 of the reinforcing plate 9 is approximately the same as the width dimension of the side edge 20 of the guide rail base frame 2, and the width dimension of the bottom edge 91 is substantially the same dimension as the width dimension of the bottom edge 22. I have. More specifically, in the illustrated embodiment, the width dimension of the side edge 90 of the reinforcing plate 9 is slightly smaller than the width dimension of the side edge 20 of the guide rail base frame 2, but is almost the entire width of the side edge 20. It extends over. The width dimension of the bottom side 91 of the reinforcing plate 9 is slightly smaller than the width dimension of the bottom side 22 of the guide rail base frame 2, but extends over almost the entire width of the bottom side 22. The reinforcing plate 9 has a bottom 91 connected to the bottom 22 of the guide rail base frame 2 by a rivet R. The screw S that connects the bottom side 22 of the guide rail base frame 2 to the outer wall W penetrates the bottom side 91 of the reinforcing plate 9 and the bottom side 22 of the guide rail base frame 2. Since the bottom side 22 of the guide rail base frame 2 does not face the outdoor space, the reinforcing plate 9 is less affected by the heat of the fire generated outside the side 20 than the side 20 and hardly melts. By connecting the bottom side 91, the connection of the reinforcing plate material 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 90 of the reinforcing plate material 9 (when the side 90 is melted) is maintained. (Shielding function) can be maintained.

As shown in FIGS. 2 and 4, in the illustrated embodiment, the reinforcing plate 9 has a height corresponding to the upper part of the guide rail base frame 2 and is easily exposed to a higher temperature in the event of a fire. Although provided only in the upper part of the rail base frame 2, the reinforcing plate 9 may be provided over the entire height of the guide rail base frame 2.

[B-6] Other Embodiments Another embodiment of the guide rail 3 is shown in FIG. 5A. The guide rail 3 has a substantially U-shaped shape in plan view from the side 30, the side 31 positioned on the outdoor side with respect to the side 30, and the first bottom 32 </ b> A, Forming. The base sides of the side edges 30 and 31 are extended from the side edge 32A so that the extended side edges 30A and 31A extend, and the base ends of the extension side edges 30A and 31A are connected to the second bottom side 32B. . Attachment sides 36A and 37A are formed on the extended side 30A. The attachment side 36A is attached to the attachment side 23A, and the attachment side 37A is attached to the attachment side 24A. Similar to the above-described embodiment, the inner space of the guide rail 3 is provided with the reinforcing plate 7 having a substantially U-shaped shape in plan view from the side sides 70 and 71 and the bottom side 72. 70 and the side 30 are connected by a rivet R. 5A, the side 31 faces the outdoor space, and the first base 32A and the side 30 do not face the outdoor space. That is, the reinforcing plate 7 is provided on the guide rail 3 by connecting the side 70 to the side 30 that does not face the outdoor space of the guide rail 3. The reinforcing plate 7 may be provided on the guide rail by connecting the base 72 to the base 32 </ b> A that does not face the outdoor space of the guide rail 3.

The guide rail base frame 2 has a side 20A extending in a direction perpendicular to the outer wall W, a branch side 20B on the tip side of the side 20A (extending perpendicular to the side 20A), and a side 20A. And a base 20 </ b> C formed at the base end. The guide rail base frame 2 is fixed to the outer wall W by screws (not shown) with the base 20 </ b> C in contact with the outer wall W. A locking member 200 having a U-shaped cross-sectional view is connected to the outdoor side surface on the base end side of the side edge 20A by a screw S. The base side 20C is connected to the outer wall W on the outdoor side surface on the base end side of the side edge 20A. The decorative member 201 extending in the height direction is locked so as to conceal a screw (not shown) to be fixed. Caulking 202 is applied between the decorative member 201 and the outer wall W. An attachment side 23A is formed at the tip of the side 20A, and an attachment side 24A is formed at the tip of the branch side 20B. On the inner side surface of the side edge 20A and the inner side surface of the branch side 20B, a reinforcing plate member 9 having a substantially L-shaped shape in plan view from the side edge 90A and the bottom edge 91A is provided. The reinforcing plate 9 is connected to the guide rail base frame 2 by connecting the bottom side 91A and the branch side 20B that does not face the outdoor space. Furthermore, the base end side part of the side 20A is connected to the base end part of the side 90A of the reinforcing plate 9 using a screw S that connects the locking member 200 to the base end part. The part to which the screw S on the base end side of the side 20A of the guide rail base frame 2 is connected and the base 20C to which the screw S is connected are both covered with the decorative member 201 and directly into the outdoor space. Don't face. The reinforcing plate 9 is provided only in the upper portion of the side 20A in the height direction, but may be provided over the entire height of the side 20A.

In the embodiment of FIG. 5A, 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.

In FIG. 5, FIG. 5A, and FIG. 6, 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. 8 may be provided on the inner surface of the reinforcing plate 7 in the internal space of the guide rail 3. As shown in FIG. 6A, in the internal space of the guide rail 3, a reinforcing plate material having a U-shaped cross-sectional view from the side 70, the side 71, and the base 72 along the side 30, the side 31, and the base 32. 7 is provided so as not to protrude into the guide space G (in FIG. 6A, the width of the guide space is indicated as G). The side 30 and the side 70 are brought into contact with each other and connected by a rivet R. A space extending in the height direction is formed between the inner surface (extending in the height direction) of the reinforcing plate member 7 and the guide space G (extending in the height direction), and the space accommodates the thermal expansion refractory member 8. A space is formed. That is, if the thickness of the thermal expansion refractory member 8 is equal to or less than the thickness of the space, the thermal expansion refractory member 8 provided on the inner surface of the reinforcing plate 7 does not protrude into the guide space G at room temperature.

As shown in the figure, a thermal expansion refractory member (solid line) 8 is 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 (dotted line) 8 may be attached to the inner surface of the side 71 or may be attached to the inner surface of the bottom 72. In FIG. 6A, three thermal expansion refractory members 8 are illustrated, but any one or more thermal expansion refractory members 8 may be provided, or a plurality of thermal expansion refractory members 8 may be provided. Good. In the aspect in which the thermal expansion refractory member 8 is attached to the inner surface of the reinforcing plate member 7, even if the side 31 of the guide rail 3 is melted, the side 71 of the reinforcing plate 7 maintains the guide function, so that the end portion of the slat is a guide. For example, in the case where the thermal expansion refractory member 8 is provided on the inner surface of the side edge 71, the thermal expansion refractory fired by expanding the gap between the outdoor side surface portion of the slat end portion and the side edge 71 by heating. The member 8 can be closed.

[C] Configuration of Shutter Curtain [C-1] The slat shutter curtain 5 has a predetermined height and is connected to a long plate-like slat 50 extending in the opening width direction so as to be rotatable in the height direction. It is formed with. 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 slat 50 shown in FIGS. 3 and 6 is a high wind-resistant slat, and a locking recess 500 is formed in the outdoor side surface portion, and a first protrusion that forms a pocket portion 34 at the tip of the side 30 of the guide rail 3. The locking recess 500 can be locked to the piece 340 and the second protruding piece 341. FIG. 6 shows a state in which the shutter curtain 5 is swollen due to wind pressure or the like and the slat 50 is moved in the direction of exiting the guide space G. In this state, the locking recess 500 on the outdoor side surface portion of the slat end portion is the first. By engaging with the projecting piece 340 and the second projecting piece 341, the end of the slat is prevented from coming out of the guide space G. Also, a resin silencer 501 is provided at the end of the slat.

[C-2] Seat plate [C-2-1] Overall configuration of the seat plate As shown in FIGS. 7, 8, and 11, the seat plate 51 has a long shape extending in the width direction of the window opening. In addition, a vertical plate-like portion 510 is provided, and at the upper end of the plate-like portion 510, an engaging portion 511 that engages with the lower end of the immediately above slat 50 is integrally formed, and the lower end portion of the plate-like portion 510 is curved inward. Thus, a curved portion 512 is formed. The curved portion 512 is thicker than the plate-like portion 510 and has a curved peripheral surface.

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. A protrusion 5130 protrudes downward from the indoor side end of the first piece 513. The protrusion 5130 is thicker than the horizontal part of the first piece 513, and the protrusion 5130 has a curved peripheral surface as a whole.

The plate-like portion 510 further includes a horizontal piece 5140 positioned below the first piece 513 and extending horizontally from the indoor side piece toward the indoor side, and a rising shape from the tip of the horizontal piece 5140. A second piece 514 having an L shape in a side view is formed from a vertical piece 5141 extending upward. The protruding dimension of the horizontal piece 5140 of the second piece 514 is smaller than the protruding dimension of the first piece 513.

A concave latch bar housing portion that is positioned above the first piece 513 and extends horizontally over the length direction of the seat plate 51 (plate-like portion 510) is provided on the indoor side surface of the plate-like portion 510. 515 is formed, and the latch bar L is accommodated in the latch bar accommodating portion 515 so as to be movable in the length direction. In the fully closed state of the opening, the tip of the latch bar L protrudes below the latch receiving member 38 (see FIG. 9) provided in the guide rail 3 (the inner surface of the bottom side 72 of the reinforcing plate 7). Lifting is prevented. In the illustrated embodiment, as shown in FIG. 8, the protruding dimension of the curved portion 512, the protruding dimension of the second piece 514, and the protruding dimension of the latch bar accommodating portion 515 with respect to the vertical indoor side surface portion of the plate-like portion 510 are: The indoor side end portions are located on the same vertical line.

In FIG. 7, as is clear when comparing the width of the guide space of the guide rail 3 and the dimension of the seat plate 51 in the thickness direction (inside / outside direction), the seat plate 51 is a guide except for the first piece 513. It has dimensions that fit within the guide space G of the rail 3. That is, in a side view, the vertical line passing through the indoor side end of the curved portion 512 of the seat plate 51, the indoor side end of the second piece 514, and the indoor side end of the latch bar accommodating portion 515 is the side of the guide rail 3. It is located in the guide space G between 30 and 31. Both end portions of the seat plate 51 in the length direction (opening width direction) extend into the guide space G of the guide rail 3 except for the first piece 513.

On the outdoor side surface portion of the plate-like portion 510, there are provided stoppers 10 that are located at both ends in the width direction and outside the guide rail 3 and come into contact with the lintel portion 10A above the opening when the opening is opened. The horizontal upper surface of the stopper 10 is located above the upper surface of the first piece 513 and is located at substantially the same height as the lower end of the latch bar accommodating portion 515. The lower end portion of the stopper 10 is located at substantially the same height as the upper surface of the first piece 513.

[C-2-2] Reinforcing plate member for seat plate The lower surface of the horizontal first piece 513 formed on the indoor side surface portion of the plate-like portion 510 of the seat plate 51, more specifically, the lower surface of the first piece 513. The reinforcing plate 11 is provided in the space surrounded by the second piece 514 and the indoor side surface portion of the plate-like portion 510 (the portion between the lower surface of the first piece 513 and the upper surface of the horizontal piece 5140 of the second piece 514). It is. The reinforcing plate 11 is made of, for example, a steel plate. The reinforcing plate member 11 is a long member extending in the length direction (opening width direction) of the seat plate 51, and has a substantially L-shaped shape in side view from the horizontal side 110 and the vertical side 111. .

In the illustrated embodiment, as shown in FIGS. 3C, 9, and 10, the horizontal side 110 of the reinforcing plate 11 has substantially the same length as the first piece 513, and the length of the horizontal side 110 is long. Both end portions in the vertical direction do not enter the guide space of the guide rail 3. On the other hand, both longitudinal ends of the vertical side 111 extend into the guide space of the guide rail 3. The horizontal side 110 of the reinforcing plate member 11 is in contact with or close to the lower surface of the first piece 513 of the plate-like portion 510 of the seat plate 51, and the vertical side 111 of the reinforcing plate member 11 is the indoor side surface portion of the plate-like portion 510. Abut or close to. The front end of the horizontal side 110 of the reinforcing plate 11 is close to the protrusion 5130 of the first piece 513, and the lower end of the vertical side 111 is close to the base end of the upper surface of the horizontal piece 5140 of the second piece 514. Yes. The reinforcing plate 11 is attached to the seat plate 51 by connecting the horizontal 110 to the first piece 513 of the seat plate 51 with a rivet R. The upper half of the horizontal side 110 and the vertical side 111 of the reinforcing plate 11 is covered with the first piece 513, and the lower half of the vertical side 111 is covered with the vertical piece 5141 of the second piece 514. The plate 11 is not easily noticeable and does not impair the beauty.

[C-2-3] Thermal expansion fireproof member seat plate 51 of the seat plate When the window opening is closed, the seat plate 51 includes a portion facing the outdoor space and a portion not facing the outdoor space. The lower frame 6 includes a portion that faces the outdoor space and a portion that does not face the outdoor space when the window opening is fully closed. A gap is formed between a portion of the seat plate 51 that does not face the outdoor space and a portion of the lower frame 6 that does not face the outdoor space, and a portion of the seat plate 51 that does not face the outdoor space has the gap. A thermal expansion refractory member 12 is provided. In the fully closed state of the window opening, at least a part of the gap is closed by the thermal expansion refractory member 12 being expanded by heat at the time of fire. Hereinafter, description will be given based on the drawings.

At the base end side portion of the lower surface of the first piece 513, the second piece 514, the indoor side surface portion of the plate-like portion 510 (the portion between the lower surface of the first piece 513 and the upper surface of the horizontal piece 5140 of the second piece 514). A pocket portion is formed in the enclosed space, and a flame-retardant thermally expanded refractory member 12 is accommodated in the pocket portion. 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. As shown in FIGS. 9 and 10, both end portions in the length direction of the thermal expansion refractory member 12 extend into the guide space G of the guide rail 3.

As an arrangement of the thermal expansion refractory member 12, several modes are conceivable. In one embodiment, the seat plate 51 is provided over substantially the entire length. The thermal expansion refractory member 12 does not necessarily have to have a length corresponding to the substantially entire length of the seat plate 51. In one aspect, the thermal expansion refractory member 12 has a seat plate in the length direction of the seat plate 51. It is provided so as to include a region corresponding to the resin element provided on the surface portion of 51. Examples of the resin element include a stopper 10 (described later) provided on the outdoor side surface portion of the seat plate 51, and a locking device element (for example, a resin operation lever, a resin cover of the locking device) provided on the indoor side surface portion. Illustrated. The resin element may melt and ignite more easily than the aluminum forming the seat plate 51. In the illustrated embodiment, stoppers 10 (at least a part of which are formed of resin) are provided on both ends in the length direction of the plate-like portion 510 of the seat plate 51, and the thermal expansion refractory member 12 is: The seat plate 51 is provided at both ends in the length direction and includes portions corresponding to the lower side of the stopper 10. Alternatively, when a resin element (a stopper, a resin operation lever, a resin cover of a locking device, or the like) is provided at an intermediate portion in the longitudinal direction of the seat plate, the thermal expansion refractory member is below the member. You may provide so that the site | part corresponding to may be included.

In the illustrated embodiment, the outdoor side surface portion of the thermal expansion refractory member 12 is in contact with or close to the indoor side surface portion of the vertical side 111 of the reinforcing plate 11, and the protruding dimension of the horizontal piece 5140 of the second piece 514> the vertical side 111. The plate thickness of the thermal expansion refractory member 12. In one embodiment, the thermal expansion refractory member 12 is fixed to the plate-like portion 510 of the seat plate 51 together with the vertical side 111 of the reinforcing plate member 11 by rivets R. In the state where the thermal expansion refractory member 12 is accommodated in the pocket portion, the upper half portion is exposed above the vertical piece 5141 of the second piece 514, and the upper end of the thermal expansion refractory member 12 is the horizontal side of the reinforcing plate 11. It is close to the proximal end portion of 110.

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. 11 expands so as to protrude from the pocket portion as shown in FIG. 11, and closes the space between the lower portion of the seat plate 51 and the lower frame 6 over the entire width of the opening. Then, the fire around the inner space of the lower frame 6 is prevented and the fire prevention performance of the lower frame 6 is ensured. In the present embodiment, a gap is formed between a portion of the seat plate 51 that does not face the outdoor space and a portion of the lower frame 6 that does not face the outdoor space. Because it is formed by a part that does not face the outdoor space that is relatively unaffected, the gap is maintained in the event of a fire (if the member that forms the gap melts, the gap becomes larger and thermal expansion occurs. It may be difficult to close with the refractory member 12), and the thermally expanded refractory member 12 that has expanded the maintained gap is well closed. As the thermal expansion refractory member 12, Fiblock (registered trademark) of Sekisui Chemical Co., Ltd. can be used, for example.

[C-2-4] Stopper stopper of seat plate The both ends in the width direction of the outer surface of the plate-like portion 510 of the seat plate 51 are in contact with the lintel 10A above the window opening when the window opening is opened. A stopper 10 for restricting the rising of the shutter curtain 5 is provided. The stopper 10 shown in FIGS. 8 to 11 is assembled from a stopper body 14 made of a flame-retardant resin and a metal stopper holder 15.

As shown in FIG. 12, the stopper main body 14 includes a horizontal upper portion 140, left and right side portions 141, a rear portion 142, and a lower portion 143. The lower portion 143 has a downward inclined surface 1430 toward the outdoor side. I have. The lower end edge 1410 of the side portion 141 is inclined in parallel with the inclined surface 1430.

The stopper holding body 15 includes a holding side 150 that is inclined downward toward the outdoor side, right and left rising side edges 151 of the holding side 150, and a vertical mounting side 152 that rises from the rear end side of the holding side 150. It is equipped with. The upper edge 1510 of the side edge 151 is inclined in parallel with the inclined holding edge 150. As shown in FIGS. 8 and 11, the holding side 150 of the stopper holding body 15 extends from the outdoor side surface portion of the plate-like body 510 so as to protrude outside the recessed portion 600 formed in the lower frame 6. Yes. The width dimension of the holding side 150 is substantially the same as the width dimension of the stopper body 14.

The stopper main body 14 and the stopper holding body 15 are placed on the inclined holding side 150 with the inclined surface 1430 of the lower portion 143 of the stopper main body 14 positioned between the side edges 151 of the stopper holding body 15, and the inclined lower end. In a state where the edge 1410 and the inclined upper edge 1510 are in contact with or close to each other, the rear portion 142 of the stopper main body 14 is brought into contact with the mounting side 152 of the stopper holder 15 from the outdoor side and integrated with the screw S.

In the illustrated embodiment, the stopper main body 14 and the stopper holder 15 (forming the receiving member of the stopper main body 14) 15 are integrated to form the stopper 10, but the stopper 10 is formed separately from the resin. A receiving portion extending at a position spaced apart below the made-in stopper and having at least approximately the same width as that of the resin-made stopper and extending from the outdoor side surface portion of the seat plate to the outdoor side beyond the front end of the lower frame. A member (preferably provided with a downwardly inclined surface toward the outdoor side) may be provided to restrict the stopper melted by heat at the time of fire from dropping to the lower frame.

[D] Configuration of lower frame [D-1] Overall configuration of lower frame The lower frame 6 of the window shutter is a long frame extending horizontally in the width direction of the opening and exceeds the entire width of the window opening. Extending below the guide rail 3. As shown in FIGS. 7, 8, and 11, the lower frame 6 has an upper side 60 that forms a draining surface, and a recess 600 that is formed on the outdoor side with respect to the upper side 60. 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 part of the seat plate 51 at the lower end of the shutter curtain 5 is received when the window opening is fully closed.

More specifically, the lower frame 6 includes an upper side 60 that gently slopes downward toward the outdoor side, a lower side 61 that is positioned below the upper side 60 and extends horizontally, and an indoor side end of the upper side 60. A vertical rear side 62 that connects the indoor side end of the lower side 61, an extended lower side 610 extending from the tip of the lower side 61 toward the outdoor side, an outdoor side end of the upper side 60, and an outdoor side end of the lower side 61 A vertical indoor front side 63 that connects the upper part 60, an outdoor front side 64 that rises vertically from the outdoor front end of the extended lower side 610, and a rising that extends vertically upward from the indoor side end of the upper side 60. Side 65.

The upper part of the space between the outdoor front side 64 and the indoor front side 63 is open, and a recess 600 is formed from the outdoor front side 64, the indoor front side 63, and the extended lower side 610. Has been. The outdoor front side 64 is positioned on the outdoor side with respect to the seat plate 51 received in the concave portion 600, and the indoor front side 63 is positioned on the indoor side with respect to the seat plate 51 received in the concave portion 600. The extended lower side 610 that forms the bottom of the concave portion 600 extends gently downward toward the outdoor side. An L-shaped folded piece 640 is formed at the upper end of the outdoor front side 64 so as to be bent toward the indoor side. The folded piece 640 includes a horizontal piece 6400 that extends from the upper end of the outdoor front side 64 toward the indoor side (the concave portion 600 side), and a vertical piece 6401 that hangs down from the tip of the horizontal piece 6400.

The indoor side surface portion of the plate-like portion 510 of the seat plate 51 is a vertical surface, and the curved portion 512 curved toward the indoor side at the lower end has a curved peripheral surface. 51 is not caught on the folded piece 640 at the upper end of the outdoor front side 640 of the lower frame 6.

The lower part of the seat plate 51 is received in a recess 600 formed in the lower frame 6 when the window opening is fully closed. More specifically, as shown in FIGS. 7 and 8, in the fully closed state of the window opening, in the plate-like portion 510 of the seat plate 51, a portion below the first piece 513 extends into the recess 600. Yes. The indoor portion of the lower portion, that is, the vertical piece 5141 of the second piece 514 and the curved portion 512 at the lower end are in close proximity to 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 is opposed to the outdoor front side 64, and the curved portion 512 at the lower end of the seat plate 51 is separated from the extended lower side 610. ing. Since the lower part of the seat plate 51 is received in the recess 600, even if a gap is formed between the lower end of the seat plate 51 and the bottom surface of the recess 600, a space that linearly communicates with the indoor side is formed. Not.

In the fully closed state of the window opening, the upper end of the vertical piece 5141 of the second piece 514 is positioned slightly below the upper side 60 of the lower frame 6, and the vertical piece 5141 is located on the indoor side front side 63 of the lower frame 6. They are facing each other. The front end portion of the first piece 513 of the seat plate 51 is located above the front portion of the upper side 60 of the lower frame 6 and extends so as to face the upper side 60. The upper half portion of the thermal expansion refractory member 12 is over the upper end of the vertical piece 5141 of the second piece 514 and is spaced apart from the indoor front side 63 of the lower frame 6 and further to a height exceeding the upper side 60 of the lower frame 6. It extends. The lower end portion of the stopper 10 is positioned above the outdoor front side 64 of the lower frame 6. In the embodiment shown in FIG. 8, the lower part of the seat plate 51 received in the recess 600, the first piece 513 of the seat board 51, the indoor side front side 63 of the lower frame 6, and the upper side 60 do not face the outdoor space. It has become.

The lower frame 6 is fixed to the outer wall W with a screw S via a rising piece 65. Further, the lower frame 6 is connected to the lower end portion of the guide rail base frame 2 via a connecting plate member 16. More specifically, as shown in FIG. 7, the connecting plate 16 includes a vertical side 160 and a horizontal side 161, and is fixed to the inner surface of the side side 21 of the guide rail base frame 2 with the rivet R via the vertical side 160. Has been. The horizontal side 161 of the connecting plate member 16 is fixed to both ends in the length direction of the upper side 60 of the lower frame 6 by screws S. The connecting plate 16 has a length substantially corresponding to the expected dimension of the upper side 60 of the lower frame 6, and the outdoor side end in the length direction is fixed to the side near the recess 600 of the upper side 60 of the lower frame 6 by the screw S. Has been. By connecting both ends in the length direction of the lower frame 6 to the lower end of the guide rail base frame 2 by the connecting plate member 16, the lower frame 6 is prevented from being thermally deformed and drooping to the outdoor side.

[D-2] A reinforcing plate member 13 is provided on the lower frame 6 of the reinforcing plate member of the lower frame. The reinforcing plate 13 is made of a metal plate having a higher melting point than aluminum, for example, a steel plate. In the illustrated embodiment, as shown in FIG. 3E, a plurality of reinforcing plate members 13 are arranged at intervals along the length direction of the lower frame 6 (opening width direction). A reinforcing plate material may be provided over the entire length of the frame 6. When the reinforcing plate is provided over the entire length of the lower frame 6 and at least a part of the reinforcing plate covers at least part of the lower frame from the outdoor side, the portion of the lower frame covered with the reinforcing plate May form a portion that does not face the outdoor space.

The reinforcing plate 13 includes a horizontal side (bottom side) 130 that extends horizontally in the expected direction (inside / outside direction) of the lower frame 6 along the lower side 61 and the extended lower side 610 of the lower frame 6, and an outdoor end of the horizontal side 130. And a vertical side (rising side) 131 extending vertically in a rising manner along the outdoor front side 64 of the lower frame 6. As shown in FIGS. 7 and 8, the vertical side 131 of the reinforcing plate 13 is located facing the outdoor side of the lower part of the plate-like portion 510 of the seat plate 51 in the fully closed state of the window opening. As shown in FIG. 3 (E), the plurality of vertical sides 131 are opposed at equal intervals over the length direction of the plate-like portion 510 of the seat plate 51.

The horizontal side 130 of the reinforcing plate 13 extends along the lower side 61 of the lower frame 6 and the lower surface of the extended lower side 610. In the illustrated embodiment, the total expected width of the lower surface of the lower side 61 and the outdoor side of the lower surface of the extended lower side 610 It is in contact with the end. An opening groove having a predetermined width dimension and a groove width corresponding to the width dimension and the thickness dimension of the reinforcing plate 13 so that the vertical side 131 of the reinforcing member 13 can be received at the outdoor end of the extended lower side 610. 610A is formed, and the vertical side 131 of the reinforcing plate 13 extends upward along the inner surface of the outdoor front side 64 through the opening groove 610A. The upper end portion of the reinforcing plate 13 is received in a downwardly open groove formed by the upper portion of the outdoor front side 64 and the folded piece 640 (the horizontal piece 6400 and the vertical piece 6401).

[D-3] Other Embodiment of Lower Frame As shown in FIG. 8A, the lower frame 6 has an upper side 60 that forms a draining surface, and a recess 600 that is formed on the outdoor side with respect to the upper side 60. doing. In the recess 600, the lower part of the seat plate 51 at the lower end of the shutter curtain 5 is received when the window opening is fully closed. The lower frame 6 includes an upper side 60 that gently slopes downward toward the outdoor side, and a lower side 61A that is located below the upper side 60 and that gently slopes downward from the middle of the upper side 60 toward the indoor side. A vertical rear side 62 connecting the indoor side end of the upper side 60 and the indoor side end of the lower side 61A, a vertical indoor front side 63 depending from the outdoor side end of the upper side 60, and the indoor side A bottom 610A extending from the lower end of the front side 63 toward the outdoor side, an outdoor front side 64 rising vertically from the outdoor front end of the base 610A, and a rising extending vertically upward from the indoor side end of the upper side 60 A side 65 and a hanging side 66 hanging from the indoor side end of the lower side 61A are provided. 8A, the lower portion of the seat plate 51 received in the recess 600, the first piece 513 of the seat plate 51, and the indoor side front side 63 of the lower frame 6 are portions that do not face the outdoor space. .

The reinforcing plate 13 includes a horizontal side 130 that extends horizontally along the bottom side 610 </ b> A of the recess 600 of the lower frame 6 in the expected direction (inside / outside direction) of the lower frame 6, and the lower frame 6 from the outdoor end of the horizontal side 130. A vertical side 131 that extends vertically along the outdoor front side 64, a vertical side 132 that extends vertically from the indoor side end of the horizontal side 130, and an upper end of the vertical side 132 toward the indoor side. It consists of an upper side 133 that extends gently in a downwardly inclined manner, and a hanging side 134 that hangs down from the indoor side end of the upper side 133.

The horizontal side 130 of the reinforcing plate 13 extends horizontally along the bottom surface of the bottom side 610A, and the vertical side 131 passes through the outdoor side end of the bottom side 610A and is vertical along the rising outdoor front side 64. A folded piece 640 formed at the upper end of the outdoor front side 64 is engaged with the upper end of the vertical side 131. The lower surface of the lower side 61A 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 S, with the hanging side 134 in contact with the hanging side 66 of the lower frame 6 so as to overlap each other.

FIG. 8B and FIG. 8C are diagrams showing the contact between the seat plate 51 ′ having another shape and the lower frame 6 ′ in the fully closed state of the opening, and the portions not facing the outdoor space are shown in black. The portion of the seat plate 51 ′ that does not face the outdoor space faces the gap formed between the portion of the seat plate 51 ′ that does not face the outdoor space and the portion of the lower frame 6 ′ that does not face the outdoor space. A thermal expansion refractory member is provided.

In FIG. 8B, an outdoor side 516 extending so as to cover the rising side 64 ′ on the outdoor side of the lower frame 6 is formed in the middle of the vertical plate-like portion 510 ′ of the seat plate 51 ′. Yes. An outdoor side 516 is interposed between the rising edge 64 ′ on the outdoor side of the lower frame 6, the lower half of the plate-like portion 510 ′ of the seat plate 51 ′, and the outdoor space. Further, the bottom side 61 ′ of the lower frame 6 ′ is interposed between the rising side 63 ′ and the upper side 60 ′ on the indoor side of the lower frame 6 and the outdoor space.

In FIG. 8C, the seat plate 51 ′ is formed in a hollow shape from the indoor side surface portion 517 and the outdoor side surface portion 518, and the portion located on the indoor side with respect to the outdoor side surface portion 518 is the outdoor side surface portion 518. It is designed not to face the outdoor space. In the lower frame 6 ′, a portion located on the upper side of the base 61 ′ does not face the outdoor space by the base 61 ′.

[E] Operation of the embodiment [E-1] Operation of the guide rail structure according to the embodiment In the fire prevention structure of the guide rail configured as described above, in particular, when a fire occurs on the outdoor side, the outdoor Although the side 31 and the bottom 32 of the guide rail 3 facing the surface may be exposed to high temperatures, the side 31 and the bottom 32 of the guide rail may partially melt or the slats may be deformed by heat and bend. Even so, since the side edge 71 and the bottom edge 72 of the reinforcing plate 7 are provided inside the side edge 31 and the bottom edge 32 of the guide rail over substantially the entire height and width, the guide function as a guide rail and The retention function of the slat end is maintained. The width of the side edge 70 of the reinforcing plate 7 provided inside 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. Compared to 32, 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 a fire occurs on the outdoor side, the upper part of the side 20 of the guide rail base frame 2 facing the outdoor side may be exposed to high temperatures. On the inner surface of the side 20, the side 90 of the reinforcing plate 9 is provided over substantially the entire width of the side 20, and even if the upper part of the side 20 of the guide rail base frame 2 is melted, a penetration portion is formed. Is prevented. Since the side 21 of the guide rail base frame 2 does not directly face the outdoor side, the influence of heat is less than that of the side 20. The reinforcing plate 9 includes mounting sides (a bottom side 91 and a mounting side 91A) that extend in a direction perpendicular to the side sides 90 and 90A and are connected to a portion of the guide rail base frame 2 that does not face the outdoor space. Since the reinforcing plate member 9 is connected to a portion of the guide rail base frame 2 that does not face the outdoor space (bottom side 22, branching side 20B), the side of the reinforcing plate member 9 (bottom side 91, attachment) By connecting the side 91A), the connection of the reinforcing plate 9 to the guide rail base frame 2 is maintained, and the reinforcing function of the guide rail base frame 2 by the sides (side 90, side 90A) of the reinforcing plate 9 ( It is possible to maintain the shielding function when the side edges 20 and 20A facing the outdoor space are melted.

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. As shown in FIG. 35, the space between the side 30 and the interior side of the widthwise end of the shutter curtain 5 (slat 50) received in the internal space of the guide rail 3 is expanded to the full height of the opening. It is blocked over and exhibits heat shielding performance. In FIG. 6, the moisture provided in the pocket portions 33 and 34 is omitted. However, when the thermal expansion refractory member 8 is heated in the event of a fire, it foams and expands so as to cover the moisture provided in the pocket portion 33. Therefore, ignition of the mohair 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.

The reinforcing plate 7 provided in the internal space of the guide rail 3 does not protrude into the guide space G (further, the tip of the side 70 of the reinforcing plate 7 is covered by the protruding edge 3321, and the side 71, and the thermal expansion refractory member 8 does not protrude into the guide space G at the normal time. Therefore, the reinforcing plate member 7 and the thermal expansion refractory member 8 are at the normal time. This does not hinder the lifting and lowering operation of the shutter curtain 5. In addition, the rivet R, which is a connecting means for the reinforcing plate material 7 to the guide rail 3, and the rivet R, which is a connecting means for the reinforcing plate material 8 to the guide rail base frame 2, are not exposed to the outside. There is nothing.

[E-2] When a fire occurs in the fully closed state of the action window opening of the seat plate according to this embodiment, the seat plate 51 is deformed so as to be pulled upward by the heat of the fire. There is a possibility that the central portion of the plate 51 in the length direction is deformed so as to be warped. In the present embodiment, since the L-shaped reinforcing plate material 11 is provided from the horizontal side 110 and the vertical side 111 over the length direction of the plate-like portion 510 of the seat plate 51, the seat plate 51 is heated by the heat of the fire. Since the reinforcing plate 11 opposes the force to be deformed so as to be pulled upward, deformation and bending of the seat plate 51 are prevented as much as possible.

In the present embodiment, since the lower half portion of the seat plate 51 is received in the recess 600, the influence of deformation of the seat plate 51 can be reduced. More specifically, even if the seat plate 51 is deformed to some extent, the seat plate 51 is positioned in the recess 600, so that a space that communicates linearly between the interior and the exterior is not formed.

When a fire occurs with the window opening fully closed, the resin stopper main body 14 of the stopper 10 may be melted or ignited by heat. In the present embodiment, the holding side 150 of the stopper holder 15 that supports the resin stopper body 14 protrudes beyond the recess 600 formed in the lower frame 6 and the resin stopper body 14 has melted. In this case, the resin stopper main body 14 is guided by the inclined holding side 150 of the stopper holder 15 and falls outside the concave portion 600, and the molten resin falls into the concave portion 600 and falls. It prevents the resin from igniting.

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 a thick state, as shown in FIG. As described above, it expands so as to protrude from the pocket portion, and the space between the indoor side portion of the lower portion of the seat plate 51 and the indoor front side 63 of the lower frame 6, the first piece 513 and the lower frame of the seat plate 51. 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 exhibit fireproof performance, and the flame wraps around through the recess 600. To prevent that. Further, even if the molten resin stopper body 14 falls into the recess 600 and ignites, the flame is prevented from flowing through the recess 600.

[E-3] Action of lower frame according to this embodiment As shown in FIGS. 7, 8, and 3 (E), the lower portion of the plate-like portion 510 of the seat plate 51 in the fully closed state of the window opening. The vertical side 131 of the reinforcing plate 13 is located facing the outdoor side and over the length direction of the seat plate 51. 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 when the window opening is fully closed, the outdoor front side 64 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 64 of the lower frame 6 and the upper end of the outdoor front side 64 of the lower frame 6. Is locked to the upper end of the vertical side 131 by a folded piece 640. Therefore, even when the outdoor front side 64 of the lower frame 6 is deformed so as to hang down to the outdoor side due to heat, such deformation is restricted by the vertical side 131 of the reinforcing plate 13.

[E-4] Operation of Window Shutter Device According to this Embodiment In this embodiment, a fire prevention structure is adopted in the guide rail structure, the seat plate structure, and the lower frame structure, and the conventional window shutter device is used as the entire window shutter device. As compared with the device, it is possible to provide better fire prevention performance.

The present invention is used as a window shutter device.

5 Shutter curtain 51 Seat plate 6 Lower frame 60 Upper side (draining surface)
61 Lower side 610 Extension lower side (bottom side)
63 Indoor side front side 64 Outdoor side front side 640 Folding piece (locking piece)
600 Concavity 13 Reinforcement plate 130 Horizontal side (bottom side)
131 Vertical edge (rising edge)

Claims (6)

The lower frame of the window shutter has a rising side located outside the lower part of the seat plate at the lower end of the shutter curtain in a fully closed state of the window opening, and a bottom side located below the lower part of the seat plate. Prepared,
The lower frame is formed of a material having a melting point higher than that of the material forming the lower frame, and a reinforcing plate having a rising edge and a bottom edge is provided so that the rising edges are aligned with each other, and the window opening is provided. A fire prevention structure for a lower frame of a window shutter, wherein the rising edge of the reinforcing plate member is located opposite to the outdoor side of the lower portion of the seat plate in the fully closed state. The lower frame of the window shutter includes a recess that receives the lower part of the seat plate at the lower end of the shutter curtain in a fully closed state of the window opening, and a draining surface that is located on the indoor side of the recess,
The concave portion includes a first side located on the outdoor side with respect to the seat plate received in the concave portion, a second side located on the indoor side with respect to the seat plate, and lower ends of the first side and the second side. The fire prevention structure of the lower frame of the window shutter according to claim 1, wherein the first side is the rising side and the connection side is the bottom side. The upper end of the rising side is formed with a locking piece formed in a folded shape inside,
The rising edge of the reinforcing plate extends along the inner surface of the rising edge of the lower frame, and a locking piece at the upper end of the rising edge of the lower frame is locked to the upper end portion of the rising edge of the reinforcing plate. Being
A fire prevention structure for a lower frame of the window shutter according to claim 1. The bottom side of the reinforcing plate extends horizontally along the bottom surface of the bottom side of the lower frame,
The rising edge of the reinforcing plate extends vertically along the inner surface of the rising edge of the lower frame, penetrating the outdoor side end of the bottom edge of the lower frame.
The fire prevention structure of the lower frame of the window shutter of Claim 3.   The lower frame includes a lower side that is positioned below the upper side that forms the draining surface and extends toward the indoor side, and the reinforcing plate has a supporting side that extends toward the indoor side along the lower surface of the lower side. The fire prevention structure of the lower frame of any one of Claims 1-4 with which the said lower side and the said support side are connected.   The dimension in the opening width direction of the reinforcing plate is shorter than the dimension in the opening width direction of the lower frame, and a plurality of reinforcing plates are provided in the lower frame with an interval in the opening width direction. Item 6. A fire prevention structure for a lower frame of the window shutter according to any one of Items 1 to 5.

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