Fireproof building fixtures

Abstract

To provide a fireproof fitting that can maintain fire resistance performance.SOLUTION: A fireproof fitting includes a double sliding window 1, a window frame 2, and an outer sash 3 and an inner sash 5. The outer sash 3 includes a double-layer surface material 41 having a float glass 42 on the outdoor side and a netless heat-resistant tempered glass 43 on the indoor side, and an outer meeting stile 35 for holding the double-layer surface material 41. The outer meeting stile 35 includes an outdoor depth surface portion 351, an indoor depth surface portion, an inner peripheral depth surface portion, and an outer peripheral depth surface portion, which form a hollow portion 36 along the Y-axis direction. A reinforcing material 39 is installed along the Y-axis direction in the hollow portion 36. The reinforcing material 39 is disposed in the hollow portion 36 in a spaced-apart manner from the outdoor depth surface portion 351 in the Z-axis direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to fire-resistant fittings such as sliding windows in which a shoji screen slides relative to a frame. [Background technology]

[0002] For example, in fire-resistant fittings such as sliding windows in which a shoji screen is slidably arranged within a frame, it is generally known that the shoji screen comprises a frame and an interior glass panel and an exterior glass panel arranged within the frame, with the exterior glass panel being made of wired glass, which has higher fire resistance than the interior glass panel. However, as mentioned above, using a wired glass panel reduces the view compared to a non-wired glass panel, so it is possible to use non-wired heat-resistant tempered glass or the like for the exterior glass panel. However, if unwired heat-resistant tempered glass is used for the exterior glass panel, there is a risk that the heat-resistant tempered glass will break spontaneously due to its characteristics and fall to the outside of the room. For this reason, it is possible to use unwired heat-resistant tempered glass for the interior glass panel rather than the exterior glass panel. An example of such a fire-resistant fitting is the fire-resistant fitting described in Patent Document 1. For example, if this fire-resistant fitting is configured as a sliding window, it would include a window frame and two shoji screens, and the shoji screens placed within the window frame would include a frame, a vacuum double-glazed glass panel (exterior glass panel) held by the frame, and heat-resistant tempered glass (interior glass panel). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-176244 Summary of the Invention [Problem to be solved by the invention]

[0004] By the way, when the fireproof building fixture described in Patent Document 1 is configured as a sliding window, if the outdoor glass panel is heated and cracked during an outdoor fire, it will be in a single-plate state with only the indoor glass panel, and the holding force of the frame for the indoor glass panel will weaken. At the same time, buckling deformation will occur in the frame itself, and there is a risk that a gap communicating between the indoor and outdoor will be generated between the indoor glass panel and the frame, making it impossible to maintain fire resistance.

[0005] An object of the present invention is to provide a fireproof building fixture capable of maintaining fire resistance.

Means for Solving the Problems

[0006] The fireproof building fixture of the present invention includes a frame body, an outer shutter and an inner shutter disposed within the frame body, and in the fireproof building fixture in which at least one of the outer shutter and the inner shutter is provided so as to be slidable, the outer shutter has a multi-layer surface material having an outdoor glass panel without a screen and an indoor glass panel without a screen disposed on the indoor side of the outdoor glass panel, and an outer calling frame that holds the multi-layer surface material and is disposed on the outdoor side with respect to the inner shutter in the closed state of the fireproof building fixture. The indoor glass panel is composed of fireproof glass having higher fire resistance than the outdoor glass panel. The outer calling frame has an outdoor finding surface portion, an indoor finding surface portion, an inner peripheral projecting surface portion, and an outer peripheral projecting surface portion. The outdoor finding surface portion, the indoor finding surface portion, the inner peripheral projecting surface portion, and the outer peripheral projecting surface portion form a hollow portion along the longitudinal direction of the outer calling frame. A reinforcing member is installed in the hollow portion along the longitudinal direction of the outer calling frame, and the reinforcing member is disposed in the hollow portion so as to be spaced apart from the outdoor finding surface portion in the projecting direction.

Effects of the Invention

[0007] According to the present invention, a fireproof building fixture capable of maintaining fire resistance can be provided.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0009] [Configuration of the Present Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 to 3, a sliding window 1 as a fireproof building fitting according to the present embodiment includes a window frame 2 (frame body) provided at an opening of a building body, and an outer shutter 3 and an inner shutter 5 disposed within the window frame 2. In the following description, the left - right direction of the sliding window 1 is defined as the X - axis direction, the up - down direction of the sliding window 1 is defined as the Y - axis direction, and the prospective direction of the sliding window 1 is defined as the Z - axis direction. The X, Y, and Z - axis directions are perpendicular to each other.

[0010] The window frame 2 has an upper frame 21, a lower frame 22, and left - and - right vertical frames 23 made of aluminum. Rails 211 and 212 are formed along the X - axis direction on the upper frame 21, and rails 221 and 222 are formed along the X - axis direction on the lower frame 22. The height position of the rail 221 of the lower frame 22 is set lower than the height position of the rail 222. The outer shutter 3 and the inner shutter 5 are provided so as to be slidable in a sliding manner in the X - axis direction.

[0011] The outer shutter 3 is configured by assembling a frame body 31 and a multi-layer surface material 41 disposed within the frame body 31. The frame body 31 includes an upper frame 32, a lower frame 33, a vertical frame 34 (vertical frame) at one of the left and right door tips, and a vertical frame 35 (vertical frame, outer mating frame) at the other of the left and right, and holds the multi-layer surface material 41. A panel holding groove 341 having a substantially U-shaped cross-section for holding the multi-layer surface material 41 via a sealing material and a backup material is formed in the vertical frame 34 at the door tip formed of an extruded aluminum profile, which is substantially the same as the panel holding groove 357 described later. The multi-layer surface material 41 includes a float glass 42 (Low-e glass in this embodiment) as an outdoor glass panel without a mesh, a heat-resistant tempered glass 43 as an indoor glass panel without a mesh, and a spacer 44 (see FIG. 4) interposed between the float glass 42 and the heat-resistant tempered glass 43. A sealing material and a backup material are provided between the outdoor surface 421 (see FIG. 4) of the float glass 42 and the outdoor finding surface portion 351 described later. The heat-resistant tempered glass 43 is disposed on the indoor side with respect to the float glass 42, and a sealing material and a backup material are provided between the indoor surface 431 (see FIG. 4) of the heat-resistant tempered glass 43 and the indoor finding surface portion 352 (see FIG. 4) described later. The indoor glass panel is a fireproof glass having a bending strength more than twice that of the float glass 42 and having high fire resistance, and this fireproof glass is constituted by the heat-resistant tempered glass 43. The heat-resistant tempered glass 43 has a bending strength about five times or more that of the float glass 42 and has higher heat resistance than the float glass 42. In this embodiment, a glass panel with wire is regarded as a wired glass panel, and a glass panel without wire is regarded as a glass panel without a mesh. It is desirable to use a non-combustible material for the backup material described above. Thereby, the space mainly closed by the first heat expansion refractory 6C and the third heat expansion refractory 6E described later can be narrowed, and the flame can be blocked more effectively.

[0012] The upper frame 32 is formed of an extruded aluminum profile and has an upper outdoor finding surface portion 321, an upper indoor finding surface portion 322, and an upper prospect surface portion 323 as shown in FIG. 2. An upper panel holding groove 325 is formed by the upper outdoor finding surface portion 321, the upper indoor finding surface portion 322, and the upper prospect surface portion 323. The upper panel holding groove 325 holds the upper part of the multilayer sheet material 41. Further, a guide groove forming portion 324 extending upward from the upper prospect surface portion 323 is formed. A rail 211 is fitted in the guide groove forming portion 324 so that the external shutter 3 can slide in the X-axis direction. In the portion of the upper prospect surface portion 323 on the indoor side from the substantially central position in the Z-axis direction, a recess 326 recessed upward is formed, and a thermal expansion refractory 6A is attached to this recess 326. The thermal expansion refractory 6A is formed to extend in the longitudinal direction (X-axis direction) of the upper frame 32 and is disposed facing directly the upper end edge 433 of the heat-resistant reinforced glass 43 with a space in the Y-axis direction.

[0013] The lower frame 33 is formed of an extruded aluminum profile and has a lower outdoor finding surface portion 331, a lower indoor finding surface portion 332, and lower prospect surface portions 333 and 334. A lower panel holding groove 335 is formed at the upper ends of the lower outdoor finding surface portion 331 and the lower indoor finding surface portion 332. The lower panel holding groove 335 holds the lower part of the multilayer sheet material 41. A door wheel 337 capable of traveling in the X-axis direction on the rail 221 is provided between the lower outdoor finding surface portion 331 and the lower indoor finding surface portion 332. The finding dimension of the lower frame 33 of the external shutter 3 in the Y-axis direction is larger than the finding dimension of the lower frame 53 of the internal shutter 5 described later.

[0014] The outer assembled vertical frame 35 is formed of an extruded aluminum profile. As shown in FIGS. 3 and 4(A), in the closed state of the sliding window 1, it faces the inner assembled vertical frame 54 described later in the Z-axis direction and is arranged on the outdoor side with respect to the inner assembled vertical frame 54. The outer assembled vertical frame 35 has an outdoor finding surface portion 351, an indoor finding surface portion 352, an inner peripheral projecting surface portion 353, an outer peripheral projecting surface portion 354, and a partition piece portion 355. The outdoor finding surface portion 351, the indoor finding surface portion 352, the inner peripheral projecting surface portion 353, and the outer peripheral projecting surface portion 354 form a hollow portion 36 along the longitudinal direction (Y-axis direction) of the outer assembled vertical frame 35. On the indoor finding surface portion 352, a smoke return 356 that fits with a smoke return 546 (described later) of the inner assembled vertical frame 54 in the closed state of the sliding window 1 is formed. Further, a heat expansion refractory material 6B that closes the space between the outer assembled vertical frame 35 and the inner assembled vertical frame 54 is attached to the indoor finding surface portion 352. The outdoor finding surface portion 351 and the indoor finding surface portion 352 extend to the inner peripheral side of the inner peripheral projecting surface portion 353 in the X-axis direction. In the outer assembled vertical frame 35, a panel holding groove 357 in which a multilayer face material 41 is arranged is formed by the outdoor finding surface portion 351, the indoor finding surface portion 352, and the inner peripheral projecting surface portion 353. The partition piece portion 355 is continuous with the inner peripheral projecting surface portion 353 and the outer peripheral projecting surface portion 354, and partitions the hollow portion 36 into a first hollow portion 37 and a second hollow portion 38 arranged on the indoor side with respect to the first hollow portion 37. The position of the partition piece portion 355 is arranged at a position between the float glass 42 and the heat-resistant tempered glass 43 in the Z-axis direction. The projected dimensions of the inner peripheral projected surface portion 353 and the outer peripheral projected surface portion 354 in the Z-axis direction are larger than the found dimensions of the portion forming the hollow portion 36 in the X-axis direction of the outdoor found surface portion 351 and the indoor found surface portion 352. For this reason, in the entire hollow portion 36, the projected dimension in the Z-axis direction is larger than the found dimension in the X-axis direction. By being configured in this way, the found dimension of the first hollow portion 37 in the Z-axis direction can also be made large, so that the second hollow portion 38 can be arranged at a large distance from the outdoor space with respect to the outer shutter 3 in the Z-axis direction, and a reinforcing member 39 (to be described later) installed in the second hollow portion 38 can be configured to be less likely to have its temperature rise during an outdoor fire.

[0015] A reinforcing member 39 is installed in the second hollow portion 38 along the longitudinal direction (Y-axis direction) of the outer call vertical frame 35. For the reinforcing member 39, a material having a small coefficient of linear expansion is preferable for reducing the thermal expansion of the aluminum outer call vertical frame 35. In the present embodiment, it is made of steel having a smaller coefficient of linear expansion than the outer call vertical frame 35, but it may be made of stainless steel having a smaller coefficient of linear expansion than the outer call vertical frame 35. The reinforcing member 39 has a first reinforcing projected piece portion 391 and a second reinforcing projected piece portion 392 along the Z-axis direction, and a reinforcing found piece portion 393 that is continuous with the outdoor end portions of the first reinforcing projected piece portion 391 and the second reinforcing projected piece portion 392 and extends along the X-axis direction, and is formed in a substantially U-shaped cross section. As shown in FIGS. 3 and 4, the first reinforcing projected piece portion 391 is arranged on the inner peripheral side (the side of the multilayer surface material 41) with respect to the second reinforcing projected piece portion 392, and abuts against and is fixed to the inner peripheral projected surface portion 353 at a position on the indoor side of the partition piece portion 355. In the present embodiment, this fixing is performed with fixing screws, but is not shown. Further, the second reinforcing projected piece portion 392 is arranged with a gap in the X-axis direction with respect to the outer peripheral projected surface portion 354, and the reinforcing found piece portion 393 is arranged with a gap in the Z-axis direction with respect to the partition piece portion 355. In this way, the reinforcing member 39 is arranged on the indoor side in the hollow portion 36 and is arranged with a space (the first hollow portion 37) in the Z-axis direction with respect to the outdoor found surface portion 351.

[0016] In the panel holding groove 357, a first thermal expansion refractory 6C, a second thermal expansion refractory 6D, and a third thermal expansion refractory 6E that block the space between the external call vertical frame 35 and the multi-layer facing material 41 are arranged along the Y-axis direction, respectively, and are attached to the inner peripheral prospective surface portion 353. In the present embodiment, as shown in FIG. 4(A), an L-shaped reinforcing member 7 is installed in the panel holding groove 357, and the portion overlapping the L-shaped reinforcing member 7 such as the first thermal expansion refractory 6C is attached to the L-shaped reinforcing member 7. Further, in the present embodiment, the second thermal expansion refractory 6D is attached to the inner peripheral prospective surface portion 353 while avoiding the portion where the setting block 8 is arranged. As shown in FIG. 4(A), the position of the first thermal expansion refractory 6C is arranged on the outdoor side of the position of the float glass 42 in the Z-axis direction, the position of the third thermal expansion refractory 6E is arranged on the indoor side of the position of the heat-resistant reinforced glass 43 in the Z-axis direction, and the position of the second thermal expansion refractory 6D is arranged between the position of the first thermal expansion refractory 6C and the position of the third thermal expansion refractory 6E in the Z-axis direction. Note that in the X-axis direction, there is no intervening member such as a glazing channel between the multi-layer facing material 41 and the inner peripheral prospective surface portion 353, and they face each other directly with a gap therebetween.

[0017] The interior window 5 is configured by assembling a frame body 51 and a multi-layer facing material 61 as a panel disposed within the frame body 51. The frame body 51 includes an upper frame 52, a lower frame 53, one of the left and right internal call vertical frames 54 (vertical frames), and the other of the left and right door-end vertical frames 55 (vertical frames), and holds the multi-layer facing material 61. The multi-layer face material 61, similar to the multi-layer face material 41 in general, includes a float glass 62 (Low-e glass in this embodiment) as an outdoor glass panel without a screen, a heat-resistant tempered glass 63 as an indoor glass panel without a screen, and a spacer 64 interposed between the float glass 62 and the heat-resistant tempered glass 63. A sealing material and a backup material are provided between the outdoor surface 621 of the float glass 62 and the outdoor finding surface portion 541 described later. The heat-resistant tempered glass 63 is disposed on the indoor side with respect to the float glass 62, and a sealing material and a backup material are provided between the indoor surface 631 of the heat-resistant tempered glass 63 and the indoor finding surface portion 542 described later. This heat-resistant tempered glass 63 is configured in the same manner as the above-described heat-resistant tempered glass 43 as a fireproof glass with higher fireproof performance than the float glass 62. It is desirable to use a non-combustible material for the above-described backup material, whereby the space blocked by the heat expansion refractory materials 6F and 6G described later can be narrowed, and the flame can be blocked more effectively.

[0018] The upper frame 52 and the door tip vertical frame 55 are configured in substantially the same manner as the upper frame 32 and the door tip vertical frame 34 of the outer shutter 3 and are arranged with the indoor and outdoor sides reversed, so detailed descriptions thereof are omitted. Also, as shown in FIG. 2, the lower frame 53 is configured in substantially the same manner as the lower frame 33 of the outer shutter 3 except that the finding dimension in the Y-axis direction is smaller than that of the lower frame 33 of the outer shutter 3, and is arranged with the indoor and outdoor sides reversed, so detailed descriptions thereof are omitted. The upper frame 52 is fitted to the rail 212 so as to be slidable in the X-axis direction, and the lower frame 53 is fitted to the rail 222 so as to be slidable in the X-axis direction.

[0019] The inner sash vertical frame 54 is formed of an extruded aluminum profile. As shown in FIGS. 3 and 4, it has an outdoor finding surface portion 541, an indoor finding surface portion 542, an inner circumferential projecting surface portion 543, an outer circumferential projecting surface portion 544, and a partition piece portion 545. The outdoor finding surface portion 541, the indoor finding surface portion 542, the inner circumferential projecting surface portion 543, and the outer circumferential projecting surface portion 544 form a hollow portion 56 along the longitudinal direction (Y-axis direction) of the inner sash vertical frame 54. A crescent lock 70 is attached to the inner sash vertical frame 54. In FIG. 4, for the sake of convenience, the crescent lock 70 is not shown. On the outdoor finding surface portion 541, a smoke return 546 that fits with the smoke return 356 of the outer sash vertical frame 35 in the closed state of the sliding window 1 is formed. Also, on the outdoor finding surface portion 541, a fin member 548 that abuts against the indoor finding surface portion 352 of the outer sash vertical frame 35 is provided. The outdoor finding surface portion 541 and the indoor finding surface portion 542 extend inward in the X-axis direction more than the inner circumferential projecting surface portion 543. On the inner sash vertical frame 54, a panel holding groove 547 in which a multilayer face material 61 is arranged is formed by the outdoor finding surface portion 541, the indoor finding surface portion 542, and the inner circumferential projecting surface portion 543. The partition piece portion 545 is continuous with the inner circumferential projecting surface portion 543 and the outer circumferential projecting surface portion 544, and partitions the hollow portion 56 between a first hollow portion 57 and a second hollow portion 58 arranged on the outdoor side with respect to the first hollow portion 57. The position of the partition piece portion 545 is arranged at a position between the float glass 62 and the heat-resistant tempered glass 63 in the Z-axis direction. The projected dimensions of the inner circumferential projecting surface portion 543 and the outer circumferential projecting surface portion 544 in the Z-axis direction are larger than the found dimensions of the portions of the outdoor finding surface portion 541 and the indoor finding surface portion 542 that form the hollow portion 56 in the X-axis direction. For this reason, in the entire hollow portion 56, the projected dimension in the Z-axis direction is larger than the found dimension in the X-axis direction. With such a configuration, the projected dimension of the first hollow portion 57 in the Z-axis direction can also be made large, so that the second hollow portion 58 can be arranged at a large distance from the indoor space with respect to the inner blind 5 in the Z-axis direction, and a reinforcing member 59 described later installed in the second hollow portion 58 can be configured to be less likely to have its temperature rise during an indoor fire.

[0020] In the second hollow portion 58, a reinforcing member 59 is installed along the longitudinal direction (Y-axis direction) of the inner mullion 54. The reinforcing member 59 has a first reinforcing projected piece portion 591 and a second reinforcing projected piece portion 592 along the Z-axis direction, and a reinforcing found piece portion 593 that is continuous with the indoor end portions of the first reinforcing projected piece portion 591 and the second reinforcing projected piece portion 592 and extends along the X-axis direction, and is formed in a substantially U-shaped cross section. As shown in FIGS. 3 and 4, the first reinforcing projected piece portion 591 is disposed on the inner peripheral side (the multi-layer facing material 61 side) with respect to the second reinforcing projected piece portion 592, and abuts against and is fixed to the inner peripheral projected surface portion 543 at a position outside the outdoor side of the partition piece portion 545. In this embodiment, this fixing is performed with fixing screws, but is not shown in the figure. Further, the second reinforcing projected piece portion 592 is disposed with a gap in the X-axis direction with respect to the outer peripheral projected surface portion 554, and the reinforcing found piece portion 593 is disposed with a gap in the Z-axis direction with respect to the partition piece portion 545. In this way, the reinforcing member 59 is disposed on the outdoor side in the hollow portion 56 and is disposed with a space (the first hollow portion 57) in the Z-axis direction with respect to the indoor found surface portion 542.

[0021] Thermal expansion refractory materials 6F and 6G are attached along the Y-axis direction to the inner peripheral projected surface portion 543 that constitutes the panel holding groove 547. The thermal expansion refractory material 6F is disposed on the outdoor side portion of the inner peripheral projected surface portion 543, and the thermal expansion refractory material 6G is disposed on the indoor side portion of the inner peripheral projected surface portion 543. Note that in the X-axis direction, there is no intervening member such as a glazing channel between the multi-layer facing material 61 and the inner peripheral projected surface portion 543, and they are directly opposed to each other with a gap therebetween. Further, an L-shaped reinforcing member 9 is provided in the panel holding groove 547.

[0022] In the sliding window 1 described above, in the event of an outdoor fire, the buckling deformation of the outer mullion 35 is suppressed as follows, and the formation of a gap (penetration opening) communicating between the indoor and outdoor sides between the outer mullion 35 and the multi-layer facing material 41 is suppressed. First, in the closed state of the sliding window 1, as shown in FIG. 4(A), in the Z-axis direction, the outer mullion 35 is disposed on the outdoor side with respect to the inner mullion 54, and the smoke returns 356 and 546 are in contact with each other. Next, when the outer shutter 3 is exposed to the flame during an outdoor fire, the exposed portion on the outdoor side of the outer shutter 3 is heated. As shown in FIG. 4(B), heat cracks may occur in the float glass 42. On the other hand, the outer mating vertical frame 35 thermally expands in the Y-axis direction. When the upper frame 32 is pushed upward by this thermal expansion and hits the upper frame 21, the thermal expansion of the outer mating vertical frame 35 in the Y-axis direction is restricted. As a result, the outer mating vertical frame 35 tends to undergo buckling deformation as shown by the two-dot chain line in FIG. 1. Here, the buckling deformation of the outer mating vertical frame 35 is suppressed by the reinforcing member 39 in its second hollow portion 38. The reinforcing member 39 is disposed at a distance from the first hollow portion 37 (space) in the Z-axis direction with respect to the outdoor finding surface portion 351. Further, since the partition piece portion 355 is disposed between the reinforcing member 39 and the first hollow portion 37, the heat from the outdoor finding surface portion 351 side is less likely to be transmitted to the reinforcing member 39 and the temperature rise is less likely to occur compared to the case where the reinforcing member 39 is disposed in the first hollow portion 37 instead of the second hollow portion 38. Also, although the outer peripheral expected surface portion 354 is also exposed to the flame, the second hollow portion 38 is partitioned into an indoor side portion rather than an outdoor side portion of the outer peripheral expected surface portion 354. Since the second reinforcing expected piece portion 392 of the reinforcing member 39 is disposed at a gap with respect to the outer peripheral expected surface portion 354, the reinforcing member 39 is arranged in a manner that makes it difficult for the temperature to rise. Furthermore, the first reinforcing expected piece portion 391 of the reinforcing member 39 is fixed to the inner peripheral expected surface portion 353 at a position closer to the indoor side than the partition piece portion 355. Since this fixing position is a position that is not easily exposed to the flame, even if melting occurs in the outdoor finding surface portion 351 or the outer peripheral expected surface portion 354 of the outer mating vertical frame 35 that is exposed to the flame, the fixed state can be maintained, and the buckling deformation of the outer mating vertical frame 35 can be suppressed over a long period. Similarly, the door end vertical frame 34 thermally expands and tends to undergo buckling deformation, but the buckling deformation of the door end vertical frame 34 is suppressed by the vertical frame 23 shown on the left side in FIG. 3. Further, as shown in FIG. 4(B), the float glass 42 thermally cracks, the holding state of the multilayer face material 41 by the frame body 31 weakens, and the heat-resistant reinforced glass 43 falls to the outdoor side within the frame body 31. Thus, even if a gap communicating between the indoor and outdoor is formed between the outer call vertical frame 35 and the multilayer face material 41, the first thermal expansion refractory 6C, the second thermal expansion refractory 6D, and the third thermal expansion refractory 6E thermally expand at a predetermined temperature to close the gap between the outer call vertical frame 35 and the multilayer face material 41. The first thermal expansion refractory 6C closes the gap between the outdoor surface 432 of the heat-resistant reinforced glass 43 and the outdoor finding surface portion 351, the third thermal expansion refractory 6E closes the gap between the indoor surface 431 of the heat-resistant reinforced glass 43 and the indoor finding surface portion 352, and the second thermal expansion refractory 6D closes the gap between the heat-resistant reinforced glass 43 and the inner peripheral expected surface portion 353 between the first thermal expansion refractory 6C and the third thermal expansion refractory 6E. The first thermal expansion refractory 6C and the third thermal expansion refractory 6E may also close the gap between the heat-resistant reinforced glass 43 and the inner peripheral expected surface portion 353 in the relationship between the timing of their thermal expansion and the timing when the heat-resistant reinforced glass 43 falls as described above. By providing the first thermal expansion refractory 6C, the second thermal expansion refractory 6D, and the third thermal expansion refractory 6E, the workability and the gap closing rate can be improved as compared with the case of using a single-sheet thermal expansion refractory. Furthermore, even when the float glass 42 thermally cracks, the holding state of the multilayer face material 41 by the frame body 31 weakens, and the heat-resistant reinforced glass 43 falls to the outdoor side within the frame body 31, changing from the state shown in FIG. 5(A) to the state shown in FIG. 5(B), the upper frame 32 is such that the thermal expansion refractory 6A thermally expands to close the space between the upper frame 32 and the heat-resistant reinforced glass 43. Therefore, the formation of a gap communicating between the indoor and outdoor between the upper frame 32 and the heat-resistant reinforced glass 43 is suppressed. In the relationship between the timing when the heat-resistant reinforced glass 43 falls and the thermal expansion timing of the thermal expansion refractory 6A, the thermal expansion refractory 6A may also close the space between the indoor surface 431 of the heat-resistant reinforced glass 43 and the upper indoor finding surface portion 322. In the inner sash 5, the vertical frame 55 at the door end is restricted by the vertical frame 23 shown on the right side in FIG. 3. Further, since the inner mating vertical frame 54 is arranged on the indoor side with respect to the outer mating vertical frame 35 in the Z-axis direction, it is less likely to be exposed to the flame and less likely to have its temperature rise during an outdoor fire compared to the outer mating vertical frame 35. FIG. 4(B) shows a state where the float glass 62 of the inner sash 5 has not thermally cracked. However, even if the float glass 62 thermally cracks due to a gradually rising temperature, since the inner mating vertical frame 54 is reinforced by the reinforcing material 59, buckling deformation is suppressed. On the other hand, the thermal expansion refractory materials 6F and 6G start to thermally expand and are adapted to close the gap that can be formed between the heat-resistant reinforced glass 63 and the inner mating vertical frame 54.

[0023] Also, in the sliding window 1 described above, even in the case of an indoor fire, similar to the action and effect of the outer sash 3 during an outdoor fire, in the inner sash 5, the buckling deformation of the inner mating vertical frame 54 is suppressed by the reinforcing material 59. Even if a gap communicating between the indoor and outdoor is formed between the inner mating vertical frame 54 and the multi-layer facing material 61, the above-described gap can be closed by the thermal expansion refractory materials 6F and 6G. In the inner sash 5, since the heat-resistant reinforced glass 63 is arranged on the indoor side of the float glass 62, the float glass 62 is less likely to thermally crack during an indoor fire. However, even if the sealant material or the backup material comes off and the holding of the multi-layer facing material 61 becomes insufficient, and a gap communicating between the indoor and outdoor is generated, the above-described gap can be closed as described above.

[0024] [Modification Example] In the above embodiment, the expected dimension of the entire hollow portion 36 is larger than its found dimension, but the found dimension may be equal to or larger than the expected dimension. In the above embodiment, the reinforcing material 39 is installed only in the second hollow portion 38 in the outer mating vertical frame 35. However, as long as a space in the Z-axis direction is separated from the outdoor found surface portion �51 to the indoor side, other reinforcing materials may also be arranged in the first hollow portion 37. Further, in the above embodiment, the configuration of the partition piece portion 355 may be omitted. In this case, the reinforcing material 39 only needs to separate a space in the Z-axis direction from the outdoor found surface portion 351. In the above embodiment, the indoor glass panel is composed of heat-resistant tempered glass 43. However, instead of this, for example, heat-resistant crystallized glass may be used. This heat-resistant crystallized glass is obtained by reheating the base glass plate to uniformly deposit fine crystals throughout the glass, almost eliminating thermal expansion due to heat and increasing the thermal shock strength. In the above embodiment, the finding dimensions of the lower frame 33 of the outer barrier 3 are larger than the finding dimensions of the inner barrier 5. However, dimensions equal to or less than this may also be used. In the above embodiment, with respect to the panel holding groove 357, as described above, the first thermal expansion refractory 6C, the second thermal expansion refractory 6D, and the third thermal expansion refractory 6E are arranged to improve workability and reduce material costs. However, it is not limited to this. For example, a single sheet-shaped thermal expansion refractory may be arranged. In the above embodiment, the thermal expansion refractory 6A provided on the upper expected surface portion 323 of the upper frame 32 is arranged at a position facing the upper end edge 433 of the heat-resistant tempered glass 43 in the Y-axis direction. However, as long as the gap between the upper frame 32 and the heat-resistant tempered glass 43 can be blocked, it may be arranged at a position deviated from the above position. Also, if no gap is formed between the upper frame 32 and the heat-resistant tempered glass 43 or if the formed gap does not pose a problem even if it is formed, the configuration of the thermal expansion refractory 6A may be omitted. In the above embodiment, while the outer barrier 3 has a fireproof structure corresponding to an outdoor fire, the inner barrier 5 has a substantially similar fireproof structure corresponding to an indoor fire. Therefore, the configuration can be changed in a manner substantially similar to that of the outer barrier 3. In the above embodiment, the sliding window 1 is described as a fireproof joinery. However, other slide-type window types may also be used. For example, a single-slide window in which the outer barrier 3 or the inner barrier 5 is fixed to the window frame 2 may be used, or a vertical-sliding window may also be used.

[0025] [Summary of the Invention] The fireproof building fixture of the present invention includes a frame body, an outer shutter and an inner shutter disposed within the frame body, and in the fireproof building fixture in which at least one of the outer shutter and the inner shutter is provided so as to be slidable, the outer shutter includes a double-layer surface material having an outdoor glass panel without a screen and an indoor glass panel without a screen disposed on the indoor side of the outdoor glass panel, and an outer mating frame that holds the double-layer surface material and is disposed on the outdoor side with respect to the inner shutter in the closed state of the fireproof building fixture. The indoor glass panel is composed of fireproof glass having higher fire resistance than the outdoor glass panel. The outer mating frame has an outdoor finding surface portion, an indoor finding surface portion, an inner peripheral projecting surface portion, and an outer peripheral projecting surface portion. The outdoor finding surface portion, the indoor finding surface portion, the inner peripheral projecting surface portion, and the outer peripheral projecting surface portion form a hollow portion along the longitudinal direction of the outer mating frame. A reinforcing member is installed in the hollow portion along the longitudinal direction of the outer mating frame. The reinforcing member is disposed in the hollow portion with a space in the projecting direction with respect to the outdoor finding surface portion. According to the fireproof building fixture of the present invention, by installing a reinforcing member in the hollow portion of the outer mating frame in the outer shutter where the fireproof glass is disposed on the indoor side of the outdoor glass panel, buckling deformation of the frame during an outdoor fire can be suppressed. Further, since the reinforcing member is disposed on the indoor side in the hollow portion of the outer mating frame and is disposed with a space in the projecting direction with respect to the outdoor finding surface portion of the outer mating frame, compared with the case where the reinforcing member is disposed on the outdoor side in the hollow portion, even when the outer mating frame is heated during an outdoor fire, heat is less likely to be transmitted to the reinforcing member, so it can remain for a long time, and buckling deformation of the outer mating frame can be suppressed over a long period. Thus, according to the fireproof building fixture of the present invention, even if the fireproof glass is disposed on the indoor side of the outdoor glass panel in the outer shutter, buckling deformation of the outer mating frame can be suppressed, and the formation of a gap communicating between the indoor and outdoor between the outer mating frame and the fireproof glass can be suppressed, and the fire resistance can be maintained.

[0026] In the fireproof building fixture of the present invention, the fireproof glass may be heat-resistant tempered glass. According to such a configuration, even if spontaneous breakage occurs in the heat-resistant tempered glass, for example, since the heat-resistant tempered glass is disposed on the indoor side rather than the outdoor side as the indoor glass panel, it is possible to maintain fire resistance while suppressing the fall to the outdoor side due to spontaneous breakage.

[0027] In the fireproof fitting of the present invention, the outer calling frame has a partition piece portion that partitions the hollow portion into a first hollow portion and a second hollow portion disposed on the indoor side with respect to the first hollow portion between the inner peripheral expected surface portion and the outer peripheral expected surface portion, and the reinforcing member may be disposed in the second hollow portion. According to such a configuration, after partitioning the hollow portion by the partition piece portion, by disposing the reinforcing member in the second hollow portion on the indoor side rather than the first hollow portion, a configuration can be achieved in which heat from the outdoor side is less likely to be transmitted. Further, even if the outdoor finding surface portion melts during an outdoor fire, since the partition piece portion forming the second hollow portion remains as the finding surface portion, by maintaining the second hollow portion, an increase in the temperature of the reinforcing member can be suppressed, and buckling deformation of the outer calling frame can be suppressed.

[0028] In the fireproof fitting of the present invention, the reinforcing member may be fixed to the inner peripheral expected surface portion at a position on the indoor side of the partition piece portion. According to such a configuration, since the reinforcing member is fixed to a portion of the outer calling frame that is difficult to be exposed to the flame and is unlikely to increase in temperature during an outdoor fire, that is, the inner peripheral expected surface portion described above and on the indoor side of the partition piece portion, even if the outer peripheral finding surface portion is exposed to the flame and melts, for example, the risk of the reinforcing member coming off can be reduced, and buckling deformation of the outer calling frame can be suppressed over a long period. Also, in many cases, the center of gravity of the outer calling frame is eccentric toward the inner peripheral expected surface portion with respect to the center of the hollow portion, but by attaching the reinforcing member to the inner peripheral expected surface portion at a position close to the center of gravity of the outer calling frame, even if the coefficient of thermal expansion of the outer calling frame and the reinforcing member is different, warping due to the difference in the amount of thermal expansion between the outer calling frame and the reinforcing member can be reduced. Furthermore, since the reinforcing member is fixed to the inner peripheral prospective surface portion, the fixing member such as a fixing screw used for fixing does not expose to the outside, so that the design property can be improved and the consideration for water stoppage at the fixing portion can be eliminated. In addition, in the outer mating frame, the inner peripheral prospective surface portion is a portion where various processes are performed in addition to the fixing of the reinforcing member. Therefore, the productivity can be improved by concentrating various processes on the inner peripheral prospective surface portion.

[0029] In the fireproof building fitting of the present invention, the outer shutter has a frame body formed by assembling an upper frame, a lower frame, one of the left and right vertical frames, and the other outer mating vertical frame that hold the multilayer face material, the outer mating frame is constituted by the outer mating vertical frame, the inner shutter has a panel and a frame body formed by assembling an upper frame, a lower frame, one of the left and right inner mating vertical frames, and the other vertical frame that hold the panel, and the finding dimension of the lower frame of the outer shutter may be larger than the finding dimension of the lower frame of the inner shutter. According to such a configuration, compared with the case where the finding dimension of the lower frame of the outer shutter is equal to or less than the finding dimension of the lower frame of the inner shutter, the heat capacity of the lower frame of the outer shutter can be increased to suppress the temperature rise, thereby reducing the thermal expansion. Further, in the present invention, when the lower frame of the outer shutter is heated during an outdoor fire, the longitudinal thermal expansion tends to deform the outer mating vertical frame in the left-right direction. However, since the reinforcing member is installed in the hollow portion of the outer mating vertical frame as described above, this reinforcing member resists the deformation. Therefore, it is possible to suppress the outer mating vertical frame from being deformed due to the thermal expansion of the lower frame of the outer shutter.

[0030] In the fireproof building fitting of the present invention, the outer shutter has a frame body formed by assembling an upper frame, a lower frame, one vertical frame on the left and right, and the other outer mating vertical frame on the left and right for holding the multi-layer face material. The outer mating frame is composed of the outer mating vertical frame. In the outer mating vertical frame, a panel holding groove in which the multi-layer face material is arranged is formed by the outdoor finding surface portion, the indoor finding surface portion, and the inner peripheral prospective surface portion. In the panel holding groove, a first thermal expansion refractory material, a second thermal expansion refractory material, and a third thermal expansion refractory material that close the space between the outer mating vertical frame and the multi-layer face material are arranged along the longitudinal direction of the outer mating vertical frame. The position of the first thermal expansion refractory material is arranged at a position outside the room side than the position of the outdoor glass panel in the prospective direction. The position of the third thermal expansion refractory material is arranged at a position inside the room side than the position of the indoor glass panel in the prospective direction. The position of the second thermal expansion refractory material may be arranged at a position between the position of the first thermal expansion refractory material and the position of the third thermal expansion refractory material in the prospective direction. According to such a configuration, when the outer shutter is heated during an outdoor fire, the first thermal expansion refractory material can block the panel holding groove including the space between the outdoor surface of the multi-layer face material and the outdoor finding surface portion, the third thermal expansion refractory material can block the panel holding groove including the space between the indoor surface of the multi-layer face material and the indoor finding surface portion, and the second thermal expansion refractory material can block the space between the first thermal expansion refractory material and the third thermal expansion refractory material. Thus, even if a gap communicating between the indoor and outdoor is formed between the outer mating vertical frame and the multi-layer face material during an outdoor fire, the gap can be blocked by the first to third thermal expansion refractory materials. Also, for example, when arranging a single sheet-shaped thermal expansion refractory material in the panel holding groove, it requires labor such as punching out the portions corresponding to various members such as setting blocks that can be arranged between the outer mating vertical frame and the multi-layer face material. However, by arranging the first to third thermal expansion refractory materials in three rows in the prospective direction as in the present invention, even if various members are arranged between the outer mating vertical frame and the multi-layer face material, it is only necessary to appropriately set and adjust the length dimensions of the first to third thermal expansion refractory materials corresponding to the various members, without requiring labor such as punching out work, and the construction work can be reduced.

[0031] In the fireproof building fixture of the present invention, the outer shutter has a frame body formed by assembling an upper frame, a lower frame, a vertical frame on one side of the left and right, and an outer mating vertical frame on the other side of the left and right for holding the multi-layer face material. The outer mating frame is composed of the outer mating vertical frames. The upper frame of the outer shutter has an upper outdoor finding surface portion, an upper indoor finding surface portion, and an upper projection surface portion. On the upper frame of the outer shutter, an upper panel holding groove in which the multi-layer face material is disposed is formed by the upper outdoor finding surface portion, the upper indoor finding surface portion, and the upper projection surface portion. A heat expansion refractory material facing the upper end edge of the outdoor glass panel in the vertical direction may be disposed on the upper projection surface portion. According to such a configuration, even if the vertical frame on one side of the left and right or the outer mating vertical frame on the other side of the left and right is heated to cause thermal expansion in the vertical direction, and the upper frame of the outer shutter moves upward with respect to the multi-layer face material, and a gap communicating between the indoor and outdoor is formed between the upper frame and the multi-layer face material, the above-described heat expansion refractory material expands by heat during an outdoor fire, and thus the above-described gap can be closed. Further, when the outdoor glass panel is heated and cracked during an outdoor fire, and the upper part of the indoor glass panel falls to the outdoor side, it is possible to close the space between the upper frame and the multi-layer face material including the space between the indoor finding surface portion and the indoor surface of the indoor glass panel.

Explanation of Reference Numerals

[0032] 1…Staggered window (fireproof building fixture), 2…Window frame (frame body), 21…Upper frame, 211, 212, 221, 222…Rails, 22…Lower frame, 23…Vertical frame, 3…Outer shutter, 31, 51…Frame body, 32, 52…Upper frame, 321…Upper outdoor finding surface part, 322…Upper indoor finding surface part, 323…Upper projected surface part, 324…Guide groove forming part, 325…Upper panel holding groove, 326…Recessed part, 33, 53…Lower frame, 331…Lower outdoor finding surface part, 332…Lower indoor finding surface part, 333…Lower projected surface part, 334…Lower projected surface part, 335…Lower panel holding groove, 337…Door wheel, 34, 55…Door end vertical frame, 341, 357, 547…Panel holding grooves, 35…Outer call vertical frame (outer call frame), 351, 541…Outdoor finding surface part, 352, 542…Indoor finding surface part, 353, 543…Inner peripheral projected surface part, 354, 544…Outer peripheral projected surface part, 355, 545…Partition piece part, 356, 546…Smoke return, 36, 56…Hollow part, 37, 57…First hollow part, 38, 58…Second hollow part, 39, 59…Reinforcing material, 391, 591…First reinforcing projected piece part, 392, 592…Second reinforcing projected piece part, 393, 593…Reinforcing finding piece part, 41, 61…Multi-layer surface material, 42, 62…Float glass (outdoor glass panel), 421, 432, 621…Outdoor surface, 43, 63…Heat-resistant tempered glass (indoor glass panel, fireproof glass), 431, 631…Indoor surface, 433…Upper edge, 44, 64…Spacer, 5…Inner shutter, 54…Inner call vertical frame, 548…Fin member, 6A, 6B, 6F, 6G…Thermal expansion refractory, 6C…First thermal expansion refractory, 6D…Second thermal expansion refractory, 6E…Third thermal expansion refractory, 7, 9…L-shaped reinforcing material, 8…Setting block.

Claims

1. A fireproof building fitting comprising a frame body, an outer shutter and an inner shutter disposed within the frame body, wherein at least one of the outer shutter and the inner shutter is provided so as to be slidable in the left-right direction. The outer shutter has a multi-layer face material having an outdoor glass panel without a screen and an indoor glass panel without a screen disposed on the indoor side of the outdoor glass panel, and a frame body formed by framing an upper frame, a lower frame, a vertical frame on one side of the left and right, and a vertical outer joining frame on the other side of the left and right that holds the multi-layer face material. The vertical outer joining frame is disposed on the outdoor side with respect to the inner shutter in a closed state of the fireproof building fitting. The indoor glass panel is composed of a fireproof glass having higher fire resistance than the outdoor glass panel. The vertical outer joining frame has an outdoor finding surface portion, an indoor finding surface portion, an inner peripheral projecting surface portion, and an outer peripheral projecting surface portion. In the vertical outer joining frame, a hollow portion is formed along the longitudinal direction of the vertical outer joining frame by the outdoor finding surface portion, the indoor finding surface portion, the inner peripheral projecting surface portion, and the outer peripheral projecting surface portion, and a panel holding groove in which the multi-layer face material is disposed is formed by the outdoor finding surface portion, the indoor finding surface portion, and the inner peripheral projecting surface portion. A reinforcing member is installed in the hollow portion along the longitudinal direction of the vertical outer joining frame. The reinforcing member is disposed in the hollow portion with a space in the projecting direction with respect to the outdoor finding surface portion. In the panel holding groove, a first thermal expansion fireproof material, a second thermal expansion fireproof material, and a third thermal expansion fireproof material that block the space between the vertical outer joining frame and the multi-layer face material are disposed along the longitudinal direction of the vertical outer joining frame and provided on the inner peripheral projecting surface portion. The position of the first thermal expansion fireproof material is disposed at a position outside the outdoor side in the projecting direction with respect to the position of the outdoor glass panel. The position of the third thermal expansion fireproof material is disposed at a position inside the indoor side in the projecting direction with respect to the position of the indoor glass panel. The position of the second thermal expansion fireproof material is disposed at a position between the position of the first thermal expansion fireproof material and the position of the third thermal expansion fireproof material in the projecting direction. A sealing material and a non-combustible backup material are provided between the outdoor surface of the outdoor glass panel and the outdoor finding surface portion, and between the indoor surface of the indoor glass panel and the indoor finding surface portion, respectively. The first thermal expansion fireproof material and the third thermal expansion fireproof material are disposed directly facing each other in the left-right direction with respect to the backup material. A fireproof building fitting characterized by the above.

2. In the fireproof building fixture according to claim 1, the fireproof glass is heat-resistant tempered glass and this is a feature of the fireproof building fixture.

3. In the fireproof building fixture according to claim 1 or claim 2, the outer call vertical frame has a partition piece portion that partitions the hollow portion into a first hollow portion and a second hollow portion disposed on the indoor side with respect to the first hollow portion between the inner peripheral projected surface portion and the outer peripheral projected surface portion, the reinforcing material is disposed in the second hollow portion and this is a feature of the fireproof building fixture.

4. In the fireproof building fixture according to claim 3, the reinforcing material is fixed to the inner peripheral projected surface portion at a position on the indoor side of the partition piece portion and this is a feature of the fireproof building fixture.

5. In the building fixture according to any one of claims 1 to 3, the inner shutter has a panel and a frame body formed by framing the panel with an upper frame, a lower frame, one of the left and right inner call vertical frames, and the other vertical frame on the left and right, the found dimension of the lower frame of the outer shutter is larger than the found dimension of the lower frame of the inner shutter and this is a feature of the fireproof building fixture.

6. In the fireproof building fixture according to any one of claims 1 to 5, the upper frame of the outer shutter has an upper outdoor found surface portion, an upper indoor found surface portion, and an upper projected surface portion, an upper panel holding groove in which the multilayer surface material is disposed is formed on the upper frame of the outer shutter by the upper outdoor found surface portion, the upper indoor found surface portion, and the upper projected surface portion, a heat expansion refractory material facing the upper end edge of the indoor glass panel in the vertical direction is disposed on the upper projected surface portion and this is a feature of the fireproof building fixture.

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