Building materials

Abstract

To provide a fitting capable of ensuring fire resistance even when using any fire-resistant glass.SOLUTION: The fitting includes: a frame 1 placed in an opening of a building; and sashes 2A, 2B placed in the frame. The sash includes a pair glass 30 including a glass 31 with fire resistance placed at least on the indoor side. A heating foamed material 70 is placed on the sash frame 24A. The heating foamed material includes at least two foamed materials 71, 72 with different foaming temperatures stacked in a predetermined range.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to building materials. [Background technology]

[0002] A fitting that houses a shoji screen within a frame installed in an opening in a building is known. An example of a fitting that requires fire resistance is a sliding window that has double-glazed glass on the inner and outer shoji screens, with wired glass on the outdoor side and Low-E glass on the indoor side, and a heated foaming material installed at the joint of the sliding window (see, for example, Patent Document 1). In recent years, heat-resistant tempered glass has been used instead of wired glass to ensure a good view from the shoji screen. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-134022 Summary of the Invention [Problem to be solved by the invention]

[0004] If heat-resistant tempered glass is used on the interior side instead of wired glass, the heat transfer to the joint will be slower, which will slow down the start of foaming of the foaming material and may result in insufficient fire protection.

[0005] The present disclosure has been made in consideration of such problems, and aims to provide a building material that can ensure fire prevention performance regardless of the fire resistance of the glass used. [Means for solving the problem]

[0006] The building fixture according to the present disclosure comprises a frame body installed at an opening of a building and a shoji screen placed within the frame body, the shoji screen having double glazing with fire-resistant glass at least on the indoor side, and a heat-foaming material provided on at least one of the frame body and the frame body of the shoji screen, the heat-foaming material being formed by stacking at least two types of foaming materials with different foaming temperatures over a predetermined area. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a front view of a sliding window according to one embodiment of the present disclosure, viewed from the indoor side. [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line BB in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view taken along line CC in FIG. 2. DETAILED DESCRIPTION OF THE INVENTION

[0008] The fittings of the present disclosure will be described with reference to Figures 1 to 4. A sliding window will be used as an example of a fitting provided in an opening of a building.

[0009] In the following description, the direction connecting the indoor and outdoor sides is referred to as the indoor-outdoor direction, the vertical direction of the shoji screen is referred to as the up-down direction, and the width direction of the shoji screen is referred to as the left-right direction. When viewed from the indoor side, the left side is referred to as the left side, and the right side is referred to as the right side.

[0010] As shown in Figures 1 to 3, the sliding window 100 is installed in an opening of a building and comprises a frame body 1 formed in a rectangular frame shape, and an outer shoji screen 2A and an inner shoji screen 2B that are slidable left and right relative to the frame body 1.

[0011] The frame body 1 includes an upper frame 11 and a lower frame 12 extending in the left-right direction, and a pair of vertical frames 13, 13 extending in the up-down direction and connecting both ends of the upper frame 11 and both ends of the lower frame 12. The frame body 1 is made of a metal such as aluminum.

[0012] The outer shoji screen 2A is provided on the outdoor side of the frame body 1. The inner shoji screen 2B is provided on the indoor side of the frame body 1. When the outer shoji screen 2A and the inner shoji screen 2B are closed, they are positioned so as to block the inside of the frame body 1. The outer shoji screen 2A and the inner shoji screen 2B each have a frame body 20 formed in a four-sided frame shape and a pair of glass panes 30 housed within the frame body 20. The outer shoji screen 2A and the inner shoji screen 2B can each slide left and right along a rail 15 formed on the bottom frame 12.

[0013] The frame 20 has an upper frame 21 and a lower frame 22 that extend in the left-right direction, and a door end frame 23 and a door joint frame 24 that connect both ends of the upper frame 21 and both ends of the lower frame 22 and extend in the up-down direction. The frame 20 is made of metal such as aluminum. In the following description, the direction in which each frame extends may be referred to as the longitudinal direction.

[0014] The double glass 30 has the same configuration and is installed on both the outer shoji 2A and the inner shoji 2B. The glass on the indoor side of the double glass 30 is heat-resistant tempered glass 31. The heat-resistant tempered glass 31 corresponds to fire-resistant glass. The glass on the outdoor side of the double glass 30 is LOW-E glass 32. The double glass 30 is supported and fixed to the frame 20.

[0015] The outer shoji 2A and the inner shoji 2B are locked from sliding left and right by locking the crescent locks 38 provided on each other's joint frames 24. By releasing the crescent locks 38, the outer shoji 2A and the inner shoji 2B can be slid left and right.

[0016] The structure of the door frame 24 of the sliding window 100 will be described in detail.

[0017] The outer sash 2A's joint frame 24 (hereinafter referred to as the outer sash frame 24A) has an outer wall portion 40 located on the outdoor side, an inner wall portion 50 located on the indoor side, and a first connecting plate portion 61 and a second connecting plate portion 62 that connect the outer wall portion 40 and the inner wall portion 50. The first connecting plate portion 61 is located closer to the double glazing 30 than the second connecting plate portion 62.

[0018] The outer wall portion 40 extends in the left-right direction. One end 40a of the outer wall portion 40 is connected to the second connecting plate portion 62. The other end 40b of the outer wall portion 40 extends further toward the double glazing 30 than the first connecting plate portion 61. The portion of the outer wall portion 40 that extends further toward the double glazing 30 than the first connecting plate portion 61 is called the first visible plate portion 41.

[0019] The inner wall portion 50 extends in the left-right direction. One end 50a of the inner wall portion 50 is connected to the second connecting plate portion 62. The other end 50b of the inner wall portion 50 is connected to the first connecting plate portion 61.

[0020] A hollow portion 42 is formed, surrounded by the outer wall portion 40, the inner wall portion 50, the first connecting plate portion 61, and the second connecting plate portion 62. The hollow portion 42 is formed in a rectangular shape in a plan view. A reinforcing core material 43 is disposed inside the hollow portion 42. The reinforcing core material 43 is fixed to the first connecting plate portion 61 using screws or the like.

[0021] The first connecting plate 61 extends in the indoor / outdoor direction. One end 61a of the first connecting plate 61 is connected to the exterior wall 40. The other end 61b of the first connecting plate 61 extends further indoors than the interior wall 50. The second sight plate 44 extends from the other end 61b of the first connecting plate 61 towards the double glazing 30 in the left-right direction.

[0022] The first sight plate portion 41, the first connecting plate portion 61, and the second sight plate portion 44 function as a glass holding groove 45 formed in a U-shape in plan view.

[0023] The second connecting plate portion 62 extends in the indoor / outdoor direction. One end 62a of the second connecting plate portion 62 is connected to the exterior wall portion 40. The other end 62b of the second connecting plate portion 62 extends further indoors than the interior wall portion 50. A third sight plate portion 46 extends from near the other end 62b of the second connecting plate portion 62 toward the double-glazed glass 30 in the left-right direction. A first projection plate portion 47 extends from the tip of the third projection plate portion 46 toward the indoor direction. An outer smoke deflector 48 extends from the tip of the first projection plate portion 47 toward the double-glazed glass 30 in the left-right direction.

[0024] The inner wall portion 50, the first connecting plate portion 61 extending indoors beyond the inner wall portion 50, and the second connecting plate portion 62 extending indoors beyond the inner wall portion 50 function as a heated foam material retaining groove 49 formed in a U-shape when viewed from above.

[0025] A foaming material 70 is attached to the foaming material retaining groove 49 of the outer frame 24A along its length. The foaming material 70 is fixed to the indoor surface 50c of the interior wall 50 using double-sided tape or similar. The foaming material 70 is made of two types of foaming materials with different foaming temperatures. As shown in FIG. 4, a first foaming material 71, which has a higher foaming temperature, is attached to the entire longitudinal length of the outer frame 24A, from the lower end 25 to the upper end 26. A second foaming material 72, which has a lower foaming temperature than the first foaming material 71, is attached to the outer frame 24A from the lower end 25 to just above the crescent lock 38. The second foaming material 72 is fixed to the first foaming material 71 by a mechanical method, such as double-sided tape or staples. The second foaming material 72 is provided within the foaming material retaining groove 49. The second foaming material 72 may be attached to the entire longitudinal length of the outer frame 24A. In a plan view, the first heated-foaming material 71 is attached with a wider width than the second heated-foaming material 72. For example, the foaming temperature of the first heated-foaming material 71 is 250°C, and the foaming temperature of the second heated-foaming material 72 is just under 200°C. The foaming temperatures of the first heated-foaming material 71 and the second heated-foaming material 72 may be appropriately selected to be optimal.

[0026] The inner shoji screen 2B's joint frame 24 (hereinafter referred to as the inner shoji screen 24B) has an outer wall portion 80 located on the outdoor side, an inner wall portion 90 located on the indoor side, and a third connecting plate portion 63 and a fourth connecting plate portion 64 that connect the outer wall portion 80 and the inner wall portion 90. The third connecting plate portion 63 is located closer to the double glazing 30 than the fourth connecting plate portion 64.

[0027] The outer wall portion 80 extends in the left-right direction. One end 80a of the outer wall portion 80 extends further toward the double glazing 30 than the third connecting plate portion 63. The other end 80b of the outer wall portion 80 is connected to the fourth connecting plate portion 64.

[0028] The inner wall portion 90 extends in the left-right direction. One end 90a of the inner wall portion 90 is connected to the third connecting plate portion 63. The other end 90b of the inner wall portion 90 is connected to the fourth connecting plate portion 64.

[0029] A hollow portion 65 is formed, surrounded by the outer wall portion 80, the inner wall portion 90, the third connecting plate portion 63, and the fourth connecting plate portion 64. The hollow portion 65 is formed in a substantially rectangular shape in a plan view. A reinforcing core material 66 is disposed inside the hollow portion 65.

[0030] The third connecting plate 63 extends in the indoor / outdoor direction. One end 63a of the third connecting plate 63 is connected to the exterior wall 80. The other end 63b of the third connecting plate 63 extends slightly indoors beyond the interior wall 90.

[0031] The fourth connecting plate 64 extends in the indoor-outdoor direction. One end 64a of the fourth connecting plate 64 extends further outdoors than the exterior wall 80. The portion of the fourth connecting plate 64 that extends outdoors beyond the exterior wall 80 is called a second projecting plate 82. The other end 64b of the fourth connecting plate 64 is connected to the other end 90b of the interior wall 90. A first interior panel 91 extends indoors from an intersection 67 between the fourth connecting plate 64 and the interior wall 90, extending at a slight incline relative to the indoor-outdoor direction. A second interior panel 92 extends from the other end 63b of the third connecting plate 63 toward the double-glazed glass 30 in the left-right direction. A third interior panel 93 extends indoors from the tip of the second interior panel 92, extending at a slight incline toward the first interior panel 91 relative to the indoor-outdoor direction. The first indoor panel 91 and the third indoor panel 93 are inclined toward each other as they approach the indoor side. A fourth indoor panel 94 is provided to connect a leading end 91a of the first indoor panel 91 with a leading end 93a of the third indoor panel 93. The fourth indoor panel 94 extends in the left-right direction.

[0032] The outer wall portion 80, the third connecting plate portion 63, and the second indoor plate portion 92 function as a glass holding groove 83 formed in a U-shape in plan view.

[0033] Glass holding fittings 88 are attached along the surfaces of the third connecting plate portion 63 and the second indoor panel portion 92 that face the glass holding grooves 83. The glass holding fittings 88 have an L-shape in plan view. The glass holding fittings 88 have a length that is approximately the same as the length of the double glazing 30 in the up-down direction. The glass holding fittings 88 are fixed to the third connecting plate portion 63 together with the reinforcing core material 66 using screws or the like.

[0034] A hollow portion 95 is formed surrounded by an inner wall portion 90, a first indoor board portion 91, a second indoor board portion 92, a third indoor board portion 93, and a fourth indoor board portion 94. The first indoor board portion 91, the third indoor board portion 93, and the fourth indoor board portion 94 protrude indoors beyond the frame body 1.

[0035] A third projecting plate 84 extends from the middle of the exterior wall 80 toward the outdoors. The second projecting plate 82, a part of the exterior wall 80, and the third projecting plate 84 function as an airtight material holding groove 85 formed in a U-shape in plan view. An airtight material 85a is held in the airtight material holding groove 85.

[0036] An inner smoke deflector 86 extends from the tip of the third projection plate 84 toward the pair of glass 30 in the left-right direction. The area surrounded by the outer wall 80, the third projection plate 84, and the inner smoke deflector 86 functions as a heated foam material holding groove 87.

[0037] A third heated foaming material 73 is attached along the longitudinal direction to the heated foaming material holding groove 87 of the inner frame 24B. The third heated foaming material 73 is fixed, for example, with double-sided tape, to the surface 84a of the third projection plate portion 84 facing the pair of glass 30. The third heated foaming material 73 uses, for example, a foaming material with the same foaming temperature as the first heated foaming material 71. The third heated foaming material 73 is attached along the entire longitudinal length of the inner frame 24B.

[0038] The sliding window 100 comprises a frame 1 installed in an opening in a building, and an outer shoji screen 2A and an inner shoji screen 2B placed within the frame 1. The outer shoji screen 2A and the inner shoji screen 2B each have double-pane glass 30 with heat-resistant tempered glass 31 arranged on the indoor side. A heat-foaming material 70 is installed along the length of the outer frame 24A of the outer shoji screen 2A, and the heat-foaming material 70 is layered over a predetermined area with a first heat-foaming material 71 with a high foaming temperature and a second heat-foaming material 72 with a low foaming temperature. In the event of a fire, the second heat-foaming material foams first, preventing gaps from forming for a predetermined period of time even if the sliding window 100 is thermally deformed.

[0039] By using the heat-resistant tempered glass 31 as the fire-resistant glass, it is possible to ensure fire prevention performance and also to improve the view compared to wired glass.

[0040] A crescent lock 38 is provided between the inner frame 24B of the inner shoji screen 2B and the outer frame 24A of the outer shoji screen 2A, and the heated foaming material 70 is arranged in layers of a first heated foaming material 71 and a second heated foaming material with different foaming temperatures from the bottom end 25 of the outer frame 24A to just above the crescent lock 38, with only the first heated foaming material 71 being arranged from just above the crescent lock 38 to the top end 26 of the outer frame 24A. By providing the second heated foaming material 72, which has a lower foaming temperature, only in the minimum necessary range, costs can be reduced while ensuring fire resistance.

[0041] An outer smoke deflector 48 and an inner smoke deflector 86 are formed between the outer frame 24A of the outer shoji screen 2A and the inner frame 24B of the inner shoji screen 2B, and the heated foam material 70 is attached in a position facing the outer smoke deflector 48 and the inner smoke deflector 86 in a plan view. In the event of a fire, the heated foam material 70 can reliably seal the gap formed between the outer smoke deflector 43 and the inner smoke deflector 86.

[0042] A third heating foam material 73 is also attached to the surface 84a of the inner frame 24B, which is perpendicular to the inner smoke deflector 86 in a plan view and on the side where the inner screen 2B opens. In the event of a fire, the third heating foam material 70 can more reliably seal the gap formed between the outer smoke deflector 43 and the inner smoke deflector 86.

[0043] A hollow portion 95 is formed at the indoor end of the inner frame 24B of the inner shoji screen 2B. By forming the hollow portion 95, the thermal insulation properties of the sliding window 100 are improved.

[0044] The fittings according to the present disclosure are not limited to the configurations of the above-described embodiments, and appropriate modifications and substitutions are possible within the scope of the gist of the present disclosure.

[0045] For example, in the above embodiment, the heat-resistant tempered glass 31 is used as the fire-resistant glass, but a glass other than the heat-resistant tempered glass 31 may be used as the fire-resistant glass. A glass other than the low-e glass 32 may be used as the other glass of the double glazing 30.

[0046] For example, in the above embodiment, the heated foam material 70 is attached in a position facing the outer smoke deflector 43, but it may be attached perpendicular to the outer smoke deflector 43 in a plan view and on the inner surface of the side where the outer screen 2A opens. The inner surface refers to the surface facing the heated foam material holding groove 49 on the indoor side of the inner wall portion 50 of the second connecting plate portion 62.

[0047] For example, in the above embodiment, the first heated foam material 71 was attached to the inner wall portion 50 side, and the second heated foam material 72 was provided on the indoor side of the first heated foam material 71, but the second heated foam material 72 may also be attached to the inner wall portion 50 side, and the first heated foam material 71 may be provided on the indoor side of the second heated foam material 72.

[0048] For example, in the above embodiment, first heated-foaming material 71 and second heated-foaming material 72 have different foaming temperatures, but heated-foaming materials having the same foaming temperature may be used.

[0049] For example, although the above embodiment has been described using the sliding window 100, the invention can be applied to other types of fixtures as well. In this case, the heated foaming material 70 can be attached to the vertical bars or lattices arranged in the center of the frame. [Explanation of symbols]

[0050] 1...frame, 2A...outer shoji (shōji), 2B...inner shōji (shōji), 24A...outer shōji frame, 24B...inner shōji frame, 30...double glazing, 31...heat-resistant tempered glass (fire-resistant glass), 38...crescent lock (locking device), 48...outer smoke deflector (smoke deflector), 70...heat-expanding foam material, 71...first heat-expanding foam material, 72...second heat-expanding foam material, 86...inner smoke deflector (smoke deflector), 95...hollow section, 100...sliding window (door and fixture)

Claims

1. A frame body provided at an opening of the building; A shoji screen is disposed within the frame body, The shoji screen is provided with double-glazed glass with fire-resistant glass at least on the indoor side, A heat-foaming material is provided on at least one of the frame body and the frame body of the shoji screen, The heat-foaming material is formed by laminating at least two types of foaming materials having different foaming temperatures within a predetermined area, The shoji screen is a sliding window with an inner shoji screen and an outer shoji screen, The heated foam material is attached along the longitudinal direction of the outer frame of the outer screen, A fitting in which a hollow section is formed at the indoor end of the inner frame of the inner shoji screen.

2. 2. The fixture according to claim 1, wherein the fire-resistant glass is heat-resistant tempered glass.

3. A locking device is provided between the inner frame of the inner door and the outer frame of the outer door, The heated foam material is a building fixture as described in claim 1 or claim 2, in which two types of foam material are layered from the lower end of the outer frame to just above the locking device, and one type of foam material is layered from just above the locking device to the upper end of the outer frame.

4. A smoke deflector is formed between the inner frame of the inner shoji and the outer frame of the outer shoji, The building material according to any one of claims 1 to 3, wherein the heated foaming material is attached in a position opposite the smoke deflector in a plan view.

5. A smoke deflector is formed between the inner frame of the inner shoji and the outer frame of the outer shoji, The heated foam material is perpendicular to the smoke deflector in a plan view and is located on the inner side of the outer screen that opens. The fitting according to any one of claims 1 to 3, which is attached to a surface.

6. A smoke deflector is formed between the inner frame of the inner shoji and the outer frame of the outer shoji, A fixture as claimed in any one of claims 1 to 5, wherein a heated foaming material is attached to the inner surface of the inner frame of the door, which is perpendicular to the smoke deflector in a plan view and on the side where the inner screen opens.

7. A frame body provided at an opening of the building; A shoji screen is disposed within the frame body, The shoji screen is provided with double-glazed glass with fire-resistant glass at least on the indoor side, A heat-foaming material is provided on at least one of the frame body and the frame body of the shoji screen, The heat-foaming material is formed by laminating at least two types of foaming materials having different foaming temperatures within a predetermined area, The shoji screen is a sliding window with an inner shoji screen and an outer shoji screen, The heated foam material is attached along the longitudinal direction of the outer frame of the outer screen, A locking device is provided between the inner frame of the inner door and the outer frame of the outer door, The heated foam material is a fixture in which two types of foam material are layered from the bottom end of the outer frame to just above the locking device, and one type of foam material is layered from just above the locking device to the top end of the outer frame.

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