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 a sash 2B placed in the frame. The sash includes a paired glass 30 with fire-resistant glass 31 at least on the interior side. In the frame 24B of the sash and on the indoor side of the paired glass, a hollow portion 95 is formed. A glass-holding metal fitting 88 is provided at a position facing the surface 31a facing the indoor side in the peripheral portion of the paired glass. The peripheral edge of the paired glass, a glass retainer, and the hollow part are positioned so that they overlap each other when viewed from the indoor side.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-paned glass on the inner and outer shoji screens, with wired glass on the outdoor side and Low-E glass on the indoor side, and glass retaining metal fittings installed on the outer frame of the outer shoji screen to prevent the double-paned glass from falling out (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. 2016-056557 Summary of the Invention [Problem to be solved by the invention]

[0004] If heat-resistant tempered glass is used instead of wired glass and the heat-resistant tempered glass is placed on the indoor side of the double glazing, there is a risk that the heat-resistant tempered glass on the indoor side will collapse more quickly in the event of a fire than if it were wired glass.

[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 fittings according to the present disclosure comprise a frame body provided at an opening of a building and a shoji screen arranged within the frame body, the shoji screen comprising double glass with fire-resistant glass arranged at least on the indoor side, either the frame body or the frame body of the shoji screen having a hollow portion formed on the indoor side of the double glass, glass retaining metal fittings provided at a position opposite the surface of the periphery of the double glass facing the indoor side, the periphery of the double glass, the glass retaining metal fittings and the hollow portion being arranged in positions where they overlap each other when viewed from the indoor side, the fire-resistant glass being heat-resistant tempered glass, the shoji screen being a sliding window comprising an inner shoji screen and an outer shoji screen, the glass retaining metal fittings being fixed to the inner frame of the inner shoji screen, and the hollow portion being formed by being surrounded by a metal member. The glass holding fittings are formed in an L-shape in a plan view and comprise a fixing piece extending in the indoor / outdoor direction and a holding piece connected to the indoor end of the fixing piece and arranged opposite the surface of the peripheral portion of the double glass facing the indoor side, and the tip of the holding piece is sandwiched between the hollow portion and a packing material that holds the double glass. There are. [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. 10 is a horizontal cross-sectional view of a vertical sliding window according to a modified example of an embodiment. [Figure 5] FIG. 5 is a cross-sectional view taken along line CC in FIG. 4. [Figure 6] FIG. 10 is a horizontal cross-sectional view of a fixed window according to a modified example of an embodiment. [Figure 7] FIG. 7 is a cross-sectional view taken along line DD in FIG. 6. DETAILED DESCRIPTION OF THE INVENTION

[0008] The fittings of the present disclosure will be described with reference to Figures 1 to 3. 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 in a plane.

[0025] A heated foaming material 70 is attached to the heated foaming material holding groove 49 of the outer frame 24A along the longitudinal direction. The heated foaming material 70 is fixed to the indoor surface 50c of the inner wall 50 using double-sided tape or the like. Two types of foaming materials with different foaming temperatures are used for the heated foaming material 70. A first heated foaming material 71, which has a higher foaming temperature, is attached along the entire longitudinal length of the outer frame 24A, from the lower end 25 to the upper end 26. A second heated foaming material 72, which has a lower foaming temperature than the first heated foaming material 71, is attached from the lower end 25 of the outer frame 24A to just above the crescent lock 38. The second heated foaming material 72 may be attached along the entire longitudinal length of the outer frame 24A. 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 first heated foaming material 71 and 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 tip 91a of the first indoor panel 91 and a tip 93a of the third indoor panel 93.

[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] A glass holding fitting 88 is attached along the surfaces of the third connecting plate 63 and the second indoor panel 92 that face the glass holding groove 83. The glass holding fitting 88 has an L-shape in plan view. The glass holding fitting 88 includes a fixing piece 88a that is arranged along the third connecting plate 63 and a holding piece 88b that is arranged along the second indoor panel 92.

[0034] The fixing piece 88a is a plate piece that extends in the indoor / outdoor direction. The plate surface of the fixing piece 88a faces the left-right direction. The holding piece 88b is connected to the indoor end of the fixing piece 88a.

[0035] The retaining piece 88b is a plate piece extending in the left-right direction. The plate surface of the retaining piece 88b faces the indoor / outdoor direction. The retaining piece 88b is positioned opposite the surface 31a facing the indoor side at the peripheral edge of the double glazing 30. The retaining piece 88b only needs to be long enough to support the peripheral edge of the heat-resistant tempered glass 31 when the heat-resistant tempered glass 31 falls toward the indoor side. The tip of the retaining piece 88b is sandwiched between the second indoor plate portion 92 and a packing material 75. The packing material 75 is a member for supporting the double glazing 30 to the frame 20. The double glazing 30 is fixed to the frame 20 using a sealing material 76.

[0036] The glass holding fittings 88 are made of stainless steel, for example. The glass holding fittings 88 may also be made of steel. The glass holding fittings 88 have a length that is approximately the same as the length of the double glazing 30 in the vertical 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.

[0037] A hollow portion 95 is formed, surrounded by an inner wall portion 90, a first indoor panel portion 91, a second indoor panel portion 92, a third indoor panel portion 93, and a fourth indoor panel portion 94. The hollow portion 95 is formed surrounded by a metal frame material such as aluminum. The first indoor panel portion 91, the third indoor panel portion 93, and the fourth indoor panel portion 94 protrude indoors beyond the frame body 1. The hollow portion 95 is formed at the indoor end of the inner frame 24B of the inner shoji screen 2B.

[0038] The peripheral portion arranged within the glass holding groove 83 of the double glass 30, the holding pieces 88b of the glass holding fittings 88, and the hollow portion 95 are positioned so that they overlap one another when viewed from the indoor side. The peripheral portion arranged within the glass holding groove 83 of the double glass 30, the holding pieces 88b of the glass holding fittings 88, and the hollow portion 95 are located in that order from the outdoor side to the indoor side.

[0039] 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.

[0040] 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.

[0041] 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 with double-sided tape or the like to the surface 84a of the third projection plate portion 84 facing the pair of glass 30. For example, the third heated foaming material 73 is made of 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.

[0042] 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 arranged within the frame 1. The outer shoji screen 2A and the inner shoji screen 2B each comprise a double-pane glass 30 with heat-resistant tempered glass 31 arranged on the indoor side. A hollow section 95 is formed on the indoor side of the double-pane glass 30 in the inner frame 24B of the inner shoji screen 2B. A glass retaining bracket 88 is provided at a position facing the surface 31a of the double-pane glass 30's peripheral edge facing the indoor side. The surface 31a of the double-pane glass 30's peripheral edge, the glass retaining bracket 88, and the hollow section 95 are positioned so that at least a portion of them overlap when viewed from the indoor side. Because the glass retaining bracket 88 is attached to a position facing the peripheral section of the heat-resistant tempered glass 31 arranged on the indoor side of the double-pane glass 30, even if the heat-resistant tempered glass 31 melts and is about to fall off during a fire, the glass retaining bracket 88 can prevent it from falling for a certain period of time. The sliding window 100 can ensure fire resistance.

[0043] 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.

[0044] The glass holding fittings 88 are long members having a length that faces one side of the double glazing 30, and therefore can prevent the heat-resistant tempered glass 31 from falling off for a certain period of time.

[0045] 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.

[0046] As a modified example of this embodiment, a vertical sliding window 100A will be described using Figures 4 and 5. In this modified example, the configuration of the glass holding fittings will be mainly described. The same parts as in the above embodiment will be assigned the same reference numerals and their description will be omitted.

[0047] As shown in FIGS. 4 and 5, the vertical sliding window 100A comprises a frame body 1 and a shoji screen 2C that opens and closes within the frame body 1.

[0048] 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.

[0049] The shoji screen 2C is provided inside the frame body 1. When the shoji screen 2C is closed, it is positioned so as to block off the inside of the frame body 1. The shoji screen 2C has a frame body 20 formed in a four-sided frame shape and a pair of glass panes 30 housed inside the frame body 20.

[0050] The frame 20 has an upper frame 21 and a lower frame 22 extending in the left-right direction, and vertical frames 23, 24 connecting both ends of the upper frame 21 and both ends of the lower frame 22, respectively, and extending in the up-down direction. The frame 20 is made of a metal such as aluminum. In the following description, the direction in which each frame extends may be referred to as the longitudinal direction.

[0051] An opening / closing mechanism 101 is provided between the upper frame 11 and the upper stile 21. An opening / closing mechanism 102 is provided between the lower frame 12 and the lower stile 22. The shoji screen 2C is opened and closed by operating a handle 103 provided on the indoor side of the vertical stile 23.

[0052] 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 glass with fire resistance. 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.

[0053] The frame 20 of the shoji screen 2C uses a batten structure. An upper batten 105 is provided on the indoor side of the upper frame 21. A vertical batten 106 is provided on the indoor side of the vertical frame 23. A vertical batten 107 is provided on the indoor side of the vertical frame 24. Battens are provided on three sides of the frame 20. No batten is provided on the lower frame 22. A raised portion 108 that forms a glass storage groove 110 is formed on the indoor side of the lower frame 22.

[0054] The upper ledge 105 has a hollow portion 111 formed therein. The upper ledge 105 extends to a position facing an indoor surface 112 of the upper peripheral edge of the double glazing 30.

[0055] The vertical ledge 106 has a hollow portion 113 formed therein. The vertical ledge 106 extends to a position facing an indoor surface 114 of the left peripheral edge of the double glazing 30.

[0056] The vertical ledge 107 has a hollow portion 115 formed therein. The vertical ledge 107 extends to a position facing an indoor surface 116 of the right peripheral edge of the double glazing 30.

[0057] The rising portion 108 has a hollow portion 117. The rising portion 108 extends to a position facing an indoor surface 118 of the lower edge periphery of the double glass 30.

[0058] The vertical sliding window 100A is fitted with glass holding fittings 120. The glass holding fittings 120 will now be described.

[0059] The glass holding fittings 120 are provided at positions facing each of the four sides of the double glass 30. The glass holding fittings 120 are long members having approximately the same length as each side of the double glass 30. The glass holding fittings 120 are made of stainless steel. The glass holding fittings 120 may also be made of steel.

[0060] A glass holding fitting 120A is attached to the upper frame 21. The glass holding fitting 120A includes a fixing piece 121 fixed to the upper frame 21, a first connecting piece 122 extending downward from the fixing piece 121, a second connecting piece 123 extending from the lower end of the first connecting piece 122 toward the indoor side, and a holding piece 124 extending downward from the indoor side end of the second connecting piece 123. The fixing piece 121 and the upper frame 21 are fixed using screws or the like. The holding piece 124 extends to a position opposite the surface 112 facing the indoor side at the peripheral edge of the double glass 30. The surface 112 of the double glass 30, the holding piece 124 of the glass holding fitting 120A, and the hollow portion 111 are positioned so that they overlap each other when viewed from the indoor side.

[0061] A glass holding fitting 120B is attached to the vertical frame 23. The glass holding fitting 120B includes a fixing piece 125 fixed to the vertical frame 23, a first connecting piece 126 extending rightward from the fixing piece 125, a second connecting piece 127 extending indoors from the right end of the first connecting piece 126, and a retaining piece 128 extending rightward from the indoor-side end of the second connecting piece 127. The fixing piece 125 and the vertical frame 23 are fixed using screws or the like. The retaining piece 128 extends to a position opposite the surface 114 facing the indoor side at the peripheral edge of the double glass 30. The surface 114 of the double glass 30, the retaining piece 128 of the glass holding fitting 120B, and the hollow portion 113 are positioned so that they overlap each other when viewed from the indoor side.

[0062] A glass retaining bracket 120C is attached to the vertical frame 24. The glass retaining bracket 120C includes a fixing piece 129 fixed to the vertical frame 24, a first connecting piece 130 extending leftward from the fixing piece 129, a second connecting piece 131 extending indoors from the left end of the first connecting piece 130, and a retaining piece 132 extending leftward from the indoor-side end of the second connecting piece 131. The fixing piece 129 and the vertical frame 24 are fixed using screws or the like. The retaining piece 132 extends to a position opposite the surface 116 facing the indoor side at the peripheral edge of the double glass 30. The surface 116 of the double glass 30, the retaining piece 132 of the glass retaining bracket 120C, and the hollow portion 115 are positioned so that they overlap each other when viewed from the indoor side.

[0063] Glass holding fitting 120D is attached to bottom frame 22. Glass holding fitting 120D has a fixing piece 133 fixed to bottom frame 22 and a holding piece 134 extending upward from the indoor-side end of fixing piece 133. Fixed piece 133 and bottom frame 22 are fixed using a screw or the like. Holding piece 134 extends to a position opposite surface 118 facing the indoor side at the peripheral edge of double glass 30. Surface 118 of double glass 30, holding piece 134 of glass holding fitting 120D, and hollow portion 117 are positioned so that they overlap each other when viewed from the indoor side.

[0064] The vertical sliding window 100A comprises a frame 1 installed in an opening of a building and a shoji screen 2C arranged within the frame 1. The shoji screen 2C comprises double glass 30 with heat-resistant tempered glass 31 arranged on the indoor side. Hollow portions 111, 113, 115, and 117 are formed on the indoor side of the double glass 30 in each of the frames 21, 22, 23, and 24, respectively. Glass retaining fittings 120A, 120B, 120C, and 120D are provided at positions facing the surfaces 112, 114, 116, and 118 facing the indoor side at the peripheral edge of the double glass 30. The surfaces 112, 114, 116, and 118 of the peripheral edge of the double glass 30, the glass retaining fittings 120A, 120B, 120C, and 120D, and the hollow portions 111, 113, 115, and 117 are positioned so that they at least partially overlap when viewed from the indoor side. Because the glass retaining fittings 120 are attached in a position facing the peripheral edge of the heat-resistant tempered glass 31 arranged on the indoor side of the double glass 30, even if the heat-resistant tempered glass 31 melts and is about to fall off during a fire, the glass retaining fittings 120 can prevent it from falling for a certain period of time. The vertical sliding window 100A can ensure fire resistance.

[0065] As another modification of this embodiment, a fixed window 100B will be described using Figures 6 and 7. In this modification, the configuration of the glass holding hardware will be mainly described. The same parts as in the above embodiment will be assigned the same reference numerals and their description will be omitted.

[0066] As shown in FIGS. 6 and 7, the fixed window 100B includes a frame 1 and a double glass pane 30 fixed within the frame 1.

[0067] 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, 14 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.

[0068] 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 glass that has fire resistance. 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 1.

[0069] The frame body 1 uses a batten structure. An upper batten 150 is provided on the indoor side of the upper frame 11. A vertical batten 151 is provided on the indoor side of the left vertical frame 13. A vertical batten 152 is provided on the indoor side of the right vertical frame 14. Batten structures are provided on three sides of the frame body 1. No batten structure is provided on the bottom frame 22. A raised portion 154 that forms a glass receiving groove 153 is formed on the indoor side of the bottom frame 12.

[0070] The upper ledge 150 has a hollow portion 155 formed therein. The upper ledge 150 extends to a position facing an indoor surface 156 of the upper peripheral edge of the double glazing 30.

[0071] The vertical ledge 151 has a hollow portion 157 formed therein. The vertical ledge 151 extends to a position facing an indoor surface 158 of the left peripheral edge of the double glazing 30.

[0072] The vertical ledge 152 has a hollow portion 159 formed therein. The vertical ledge 152 extends to a position facing an indoor surface 160 of the right peripheral edge of the double glazing 30.

[0073] The fixed window 100B is fitted with glass holding fittings 170. The glass holding fittings 170 will now be described.

[0074] The glass holding fittings 170 are provided at positions facing each of the three sides of the double glass 30 except for the bottom side. The glass holding fittings 170 are long members having approximately the same length as each side of the double glass 30. The glass holding fittings 170 are made of stainless steel. The glass holding fittings 170 may also be made of steel.

[0075] A glass holding fitting 170A is attached to the upper frame 11. The glass holding fitting 170A includes a fixing piece 171 fixed to the upper frame 11, a first connecting piece 172 extending downward from the indoor-side end of the fixing piece 171, a second connecting piece 173 extending indoors from the lower end of the first connecting piece 172, and a retaining piece 174 extending downward from the indoor-side end of the second connecting piece 173. The fixing piece 171 and the upper frame 11 are fixed using screws or the like. The retaining piece 174 extends to a position opposite the surface 156 facing the indoor side at the peripheral edge of the double glass 30. The surface 156 of the double glass 30, the retaining piece 174 of the glass holding fitting 170A, and the hollow portion 155 are positioned so that they overlap each other when viewed from the indoor side.

[0076] A glass retaining bracket 170B is attached to the left vertical frame 13. The glass retaining bracket 170B includes a fixing piece 175 fixed to the vertical frame 13, a first connecting piece 176 extending rightward from the indoor-side end of the fixing piece 175, a second connecting piece 177 extending indoors from the right end of the first connecting piece 176, and a retaining piece 178 extending rightward from the indoor-side end of the second connecting piece 177. The fixing piece 175 and the vertical frame 13 are fixed using screws or the like. The retaining piece 178 extends to a position opposite the surface 158 of the double glass 30 facing the indoor side at the peripheral edge. The surface 158 of the double glass 30, the retaining piece 178 of the glass retaining bracket 170B, and the hollow portion 157 are positioned so that they overlap each other when viewed from the indoor side.

[0077] A glass retaining bracket 170C is attached to the right-side vertical frame 14. The glass retaining bracket 170C includes a fixing piece 179 fixed to the vertical frame 14, a first connecting piece 180 extending leftward from the indoor-side end of the fixing piece 179, a second connecting piece 181 extending indoors from the left end of the first connecting piece 180, and a retaining piece 182 extending leftward from the indoor-side end of the second connecting piece 181. The fixing piece 179 and the vertical frame 14 are fixed using screws or the like. The retaining piece 182 extends to a position opposite the surface 160 facing the indoor side at the peripheral edge of the double glass 30. The surface 160 of the double glass 30, the retaining piece 182 of the glass retaining bracket 170C, and the hollow portion 159 are positioned so that they overlap each other when viewed from the indoor side.

[0078] The fixed window 100B includes a frame 1 installed in an opening in a building and double glass 30 with heat-resistant tempered glass 31 arranged on the indoor side fixed within the frame 1. Hollow portions 155, 157, and 159 are formed on the indoor side of the double glass 30 in the upper frame 11 and vertical frames 13 and 14, respectively. Glass retaining metal fittings 170A, 170B, and 170C are provided at positions opposite surfaces 156, 158, and 160 facing the indoor side at the peripheral edge of the double glass 30. The surfaces 156, 158, and 160 of the peripheral edge of the double glass 30, the glass retaining metal fittings 170A, 170B, and 170C, and the hollow portions 155, 157, and 159 are positioned so that at least a portion of them overlap when viewed from the indoor side. Since the glass retaining fittings 170 are attached to the peripheral edge of the heat-resistant tempered glass 31 arranged on the indoor side of the double glazing 30, even if the heat-resistant tempered glass 31 melts and is about to fall off during a fire, the glass retaining fittings 170 can prevent it from falling off for a certain period of time. The fixed window 100B can ensure fire resistance.

[0079] 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.

[0080] 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.

[0081] In the above embodiment of the sliding window 100, the glass retaining fittings are attached only to the inner frame 24B, but the glass retaining fittings may also be attached to other frames or the outer frame 24A.

[0082] In the above embodiment, the glass holding fittings 88, 120, 170 have been described as long pieces having approximately the same length as each side of the double glazing 30, but the glass holding fittings may also be pieces that correspond to part of each side of the double glazing 30. When using piece glass holding fittings, the length of the pieces and the number attached to one side can be adjusted as appropriate.

[0083] In the above embodiment, the sliding window 100, the vertical sliding window 100A, and the fixed window 100B are used for the explanation, but the application is also possible for other types of fixtures. In such cases, the glass retaining hardware can be attached to the frame or frame frame, as well as to the vertical bar or interlock located in the center of the frame. [Explanation of symbols]

[0084] 1...frame body, 2A...outer shoji (shōji), 2B...inner shōji (shōji), 2C...shōji, 24A...outer shōji frame, 24B...inner shōji frame, 30...double glazing, 31...heat-resistant tempered glass (fire-resistant glass), 31a...surface facing the interior at the periphery of the double glazing, 88...glass holding hardware, 95...hollow portion, 100...sliding window (fitting), 100A...vertical sliding window (fitting), 100B...fixed window (fitting) , 111, 113, 115, 117... hollow portion, 112, 114, 116, 118... surface facing the indoor side at the peripheral portion of the double glass, 120 (120A, 120B, 120C, 120D)... glass holding metal fittings, 155, 157, 159... hollow portion, 156, 158, 160... surface facing the indoor side at the peripheral portion of the double glass, 170 (170A, 170B, 170C)... glass holding metal fittings

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 hollow portion is formed on the indoor side of the double glass in either the frame body or the frame body of the shoji screen, A glass holding metal fitting is provided at a position facing the surface of the peripheral portion of the double glass facing the indoor side, The peripheral edge of the double glass, the glass holding fittings, and the hollow portion are arranged in positions that overlap each other when viewed from the indoor side, The fire-resistant glass is heat-resistant tempered glass, The shoji screen is a sliding window with an inner shoji screen and an outer shoji screen, The glass retaining metal fittings are fixed to the inner frame of the inner shoji screen, The hollow portion is formed by being surrounded by a metal member, The glass holding fittings are formed in an L-shape in a plan view and comprise a fixing piece extending in the indoor / outdoor direction and a holding piece connected to the indoor end of the fixing piece and positioned opposite the surface of the peripheral portion of the double glass facing the indoor side, The tip of the holding piece is sandwiched between the hollow portion and the packing material that holds the double glazing.

2. 2. The fixture according to claim 1, wherein the glass holding fittings are elongated members having a length that faces each side of the double glazing.

3. 2. The fixture according to claim 1, wherein the glass holding fittings are pieces that face a portion of each side of the pair of glass panes.

4. A fixture as described in any one of claims 1 to 3, wherein the hollow portion is formed at the indoor end of the inner frame of the inner shoji screen.

Images