window

Abstract

To increase the strength and improve fire protection performance for a fitting in which a lower frame arranged on an inner periphery of a building opening part is formed flatly.SOLUTION: A window includes a frame and a sash. A lower frame of the frame has a lower rail that guides the sash. A rail stiffener is arranged on the outdoor side of a longitudinal center portion of the lower rail.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a window to be installed in an opening in a building. [Background technology]

[0002] 2. Description of the Related Art Windows having a frame and a paper screen arranged around the inner periphery of the frame are known in the art. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-287311 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been a demand for improved fire resistance even in the windows described in Patent Document 1 above. The present invention aims to increase the strength and improve the fire resistance of windows placed in openings of buildings. [Means for solving the problem]

[0005] The window of the embodiment includes a frame and a shoji screen. The lower frame of the frame has a lower rail for guiding the shoji screen. A rail reinforcement material is disposed on the exterior side of the longitudinal center portion of the lower rail. The rail reinforcement is fixed to the wall of the lower frame facing the outside of the room on the outside of the lower rail. It is a window that is open. In addition, the window of the embodiment comprises a frame body and a shoji screen, the lower frame of the frame body has a lower rail that guides the shoji screen, and a rail reinforcement material is arranged on the outside of the longitudinal center part of the lower rail, and the fixed part of the rail reinforcement material is covered by an outside attachment supported on the outside of the lower rail. Effect of the Invention

[0006] The window of this embodiment can have increased strength and improved fire resistance. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a vertical cross-sectional view of a window according to one embodiment. [Diagram 2]FIG. 2 is a cross-sectional view of a window of one embodiment. [Diagram 3] 1A and 1B are diagrams of a window lower frame of one embodiment, in which (a) is a vertical cross-sectional view of the lower frame, and (b) is a perspective view of a reinforcing member. [Figure 4] 1A is a partial vertical cross-sectional view of a window bottom frame of one embodiment, FIG. 1A is a partially enlarged vertical cross-sectional view of the bottom frame, and FIG. 1B is a partial oblique view of a glass-sagging prevention component. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] One embodiment of the window will be described with reference to the drawings, using as an example a sliding window in which inner and outer screens are supported on the inner periphery of a frame so that they can be slid freely apart.

[0009] (Overall composition) As shown in Figures 1 and 2, the window of this embodiment has a frame body 1 formed by assembling an upper frame 11, a lower frame 12, and left and right vertical frames 13, 14 all around, and inner and outer screens 2, 3 and a screen screen 4 are freely slidably mounted on the inner periphery of the frame body 1.

[0010] The inner shoji screen 2 is formed by assembling an upper frame 21, a lower frame 22, and left and right vertical frames 23, 24 around each of the four sides and fitting a panel body 25 around the inner periphery, and the outer shoji screen 3 is formed by assembling an upper frame 31, a lower frame 32, and left and right vertical frames 33, 34 around each of the four sides and fitting a panel body 35 around the inner periphery.

[0011] (Frame) As shown in Figure 1, the upper frame 11 that constitutes the frame body 1 has an aluminum indoor upper frame 111 that is placed on the indoor inner periphery of the opening A of the building, an aluminum outdoor upper frame 112 that is placed on the outdoor inner periphery of the opening A of the building, and a resin bridge member 113 that connects the indoor upper frame 111 and the outdoor upper frame 112.

[0012] The indoor side upper frame 111 has a concealed wall 111a facing the inner surface of the opening A, an indoor side visible wall 111b connected to the indoor side end of the concealed wall 111a, and an upper inner rail 111c extending downward from the outdoor side inner surface of the concealed wall 111a.

[0013] An indoor side resin upper frame 114 is arranged from the lower end of the upper inner rail 111c of the indoor side upper frame 111 to the underside of the concealed wall 111a and the lower end of the indoor side visible wall 111b, and the indoor side upper frame 111 and the indoor side resin upper frame 114 are fixed to the inner wall of the opening A by fixing means b11 such as screws.

[0014] The indoor side resin upper frame 114 has an angle portion 114b that extends further downward from the lower end of the indoor side visible wall 111b of the indoor side upper frame 111 and then bends and extends toward the inside of the room, and the angle portion 114b is fixed to the frame member B placed in the opening A by fixing means b12 such as screws.

[0015] The exterior upper frame 112 has two hollow portions. See It has a recessed wall 112a, an outdoor-side visible wall 112b connected to the outdoor-side end of the visible wall 112a, an upper outer rail 112c extending downward from the outdoor-side lower surface of the visible wall 112a, and an attachment piece 112d extending in the outer circumferential direction from the outer circumferential surface of the visible wall 112a, and the attachment piece 112d is fixed to the outdoor-side surface of the opening A by a fixing means b13 such as a screw.

[0016] The upper frame 11 has a wind-stop member (not shown) located above the joint of the inner and outer screens 2, 3, and a resin cover 115 is arranged on the underside between the wind-stop member and the left vertical frame 13, extending from the upper inner rail 111c to the upper outer rail 112c.

[0017] As shown in Figure 1, the lower frame 12 that constitutes the frame body 1 has an aluminum lower frame main body 121, a resin indoor cover member 122 arranged on the indoor side upper surface of the lower frame main body 121, an angle member 123 arranged on the indoor side of the lower frame main body 121, an aluminum rail-to-rail attachment 125 arranged on the upper surface of the lower frame main body 121, and an aluminum outdoor attachment 126 arranged on the outdoor side upper surface of the lower frame main body 121, and the upper surface is formed to be almost flat.

[0018] The lower frame main body 121 has a lower frame main body portion 121a having a hollow portion, an indoor side visible wall 121b connected to the indoor side end of the lower frame main body portion 121a, a lower inner rail (lower rail) 121c rising from the indoor side upper surface of the lower frame main body portion 121a, a lower outer rail (lower rail) 121d rising from the outdoor side upper surface of the lower frame main body portion 121a, an outdoor side bottom wall 121e extending in the outdoor direction from the outdoor side surface of the lower frame main body portion 121a, an outdoor side visible wall 121f extending upward from the outdoor side end of the outdoor side bottom wall 121e, an attachment piece 121h extending downward from the lower frame main body portion 121a, and an indoor side attachment piece 121i continuing from the lower end of the indoor side visible wall 121b. The lower frame body 121 has an attachment piece 121h and an indoor attachment piece 121i fixed to the opening A by fixing means b21, b22 such as screws.

[0019] The indoor side cover member 122 is arranged between the indoor side visible wall 121b of the lower frame body 121 and the lower inner rail 121c, and the angle member 123 is arranged on the indoor side of the indoor side visible wall 121b of the lower frame body 121.

[0020] The rail-to-rail attachment 125 is arranged between the lower inner rail 121c and the lower outer rail 121d, and a guide groove 12a that guides the hanging piece 221c of the lower frame 22 of the inner screen 2 is formed between the lower inner rail 121c and the rail-to-rail attachment 125.

[0021] The exterior attachment 126 has a screen guide groove 126d (see Figure 3) on its upper surface and is attached above the exterior recess 121g formed by the exterior side of the lower frame main body 121a, the exterior bottom wall 121e and the exterior visible wall 121f, and a guide groove 12b for guiding the hanging piece 321c of the lower frame 32 of the outer screen 3 is formed between the exterior attachment 126 and the lower outer rail 121d.

[0022] An outdoor hollow portion 12c is formed in the lower frame 12 by attaching an outdoor attachment 126 above the outdoor recess 121g, and the outdoor hollow portion 12c is formed to protrude outside the room beyond the left and right vertical frames 13, 14 which are fixed to the left and right sides of the lower frame 12. The lower frame 12 has a drain hole for draining water from within the hollow portion of the lower frame body 121, and a check valve 12d is attached to the drain hole.

[0023] As shown in FIG. 2, the left vertical frame 13 constituting the frame body 1 has a left vertical frame main body 131 made of aluminum and a left vertical resin frame 132 made of resin.

[0024] The left vertical frame main body 131 has a projection wall 131a fixed to the opening A, an indoor projection wall 131b extending in the projection direction from the indoor end of the projection wall 131a, an outdoor projection wall 131c extending in the projection direction from the outdoor end of the projection wall 131a, a central projection wall 131d extending in the inward direction from near the center in the projection direction of the projection wall 131a, a pull-in wall 131e extending in the inward direction from the outdoor inner peripheral surface of the projection wall 131a, and an attachment piece 131f extending in the outer peripheral direction from the indoor-side outer peripheral surface of the projection wall 131a. The left vertical frame body 131 has an attachment piece 131f fixed to the exterior side surface of the opening A by a fixing means b32 such as a screw.

[0025] The resin left vertical frame 132 is positioned on the inner circumference between the indoor side visible wall 131b and the central visible wall 131d of the left vertical frame main body 131, and the visible wall 131a of the left vertical frame main body 131 and the resin left vertical frame 132 are fixed to the inner surface of the opening A by fixing means b31 such as screws. The resin left vertical frame 132 has an angle portion 132a, and the angle portion 132a is fixed to the frame member B by fixing means b33 such as a screw.

[0026] As shown in FIG. 2, the right vertical frame 14 constituting the frame body 1 has a right vertical frame main body 141 made of aluminum and a right vertical resin frame 142 made of resin.

[0027] The right vertical frame body 141 has a projection wall 141a fixed to the opening A, an indoor projection wall 141b extending in the projection direction from the indoor end of the projection wall 141a, an outdoor projection wall 141c extending in the projection direction from the outdoor end of the projection wall 141a, a central projection wall 141d extending inwardly from near the center in the projection direction of the projection wall 141a, a pull-in wall 141e extending inwardly from the indoor inner peripheral surface of the projection wall 141a, and an attachment piece 141f extending in the outer peripheral direction from the indoor-side outer peripheral surface of the projection wall 141a. The right vertical frame body 141 has an attachment piece 141f fixed to the exterior side surface of the opening A by a fixing means b42 such as a screw.

[0028] The resin right vertical frame 142 is positioned on the inner side between the indoor side visible wall 141b and the pull-in wall 141e of the right vertical frame main body 141, and the visible wall 141a of the right vertical frame main body 141 and the resin right vertical frame 142 are fixed to the inner surface of the opening A by fixing means b41 such as screws. The resin right vertical frame 142 has an angle portion 142a, and the angle portion 142a is fixed to the frame member B by fixing means b43 such as a screw.

[0029] (Shoji screen) As shown in Figures 1 and 2, the inner shoji 2 and the outer shoji 3 have similar upper and lower frames and door end frames, so here we will mainly use the inner shoji 2 to explain the inner and outer shoji, and explain the outer shoji 3 in terms of its different structure from the inner shoji 2.

[0030] As shown in FIG. 1, the upper frame 21 constituting the inner screen 2 has a metal upper frame 211 made of aluminum and a resin upper frame 212 made of resin. The metal upper frame 211 has a frame main body 211a with a hollow portion, an exterior glass front wall 211b extending from the exterior side of the frame main body 211a in an inward direction, and a rail guide portion 211c continuing to the outer periphery of the frame main body 211a.

[0031] The plastic upper frame 212 is attached to the indoor side of the metal upper frame 211 and has a plastic upper frame main body 212a with multiple hollow portions covering the indoor side of the upper frame main body portion 211a and the rail guide portion 211c, and an indoor side glass front wall 212b that continues in the inner circumferential direction of the plastic upper frame main body 212a.

[0032] The upper frame 21 has a glass opening formed by an exterior glass opening wall 211b of the metal upper frame 211 and an interior glass opening wall 212b of the resin upper frame 212. A glass opening reinforcement material is arranged in the glass opening to prevent the glass from coming off (falling off). J The panel body 25 is held via a fitting channel.

[0033] The upper frame 21 has a heat-foaming material f provided on the inside of the rail guide portion 211c, and a heat-foaming material f is provided on the inside of the glass opening.

[0034] As shown in FIG. 1, the bottom frame 22 constituting the inner screen 2 has a metal bottom frame 221 made of aluminum and a resin bottom frame 222 made of resin. The metal frame 221 has a frame main body 221a having multiple hollow portions, an exterior glass frontage wall 221b extending inward from the exterior side of the frame main body 221a, and a hanging piece 221c extending downward from the exterior side of the frame main body 221a, and a wheel 9 is arranged from the hollow portion below the frame main body 221a to the interior side of the hanging piece 221c.

[0035] The resin bottom frame 222 has a resin bottom frame main body 222a which has multiple hollow portions and covers the interior side of the bottom frame main body portion 221a of the metal bottom frame 221, and an interior side glass front wall 222b which continues in the inner circumferential direction of the resin bottom frame main body 222a.

[0036] The lower frame 22 has a glass opening formed by the exterior glass opening wall 221b of the metal lower frame 221 and the interior glass opening wall 222b of the resin lower frame 222. Glass sagging prevention parts and glass opening reinforcement materials are arranged within the glass opening, and gray J The panel body 25 is held via a fitting channel.

[0037] The bottom frame 22 has a heated foaming material f provided on the underside of the interior of the metal bottom frame 221, and heated foaming material f is provided on the inside of the glass opening and the underside of the glass sagging prevention parts.

[0038] The left vertical frame (joint frame) 23 that constitutes the inner shoji 2 has a metal left vertical frame 231 made of aluminum and a resin left vertical frame 232 made of resin, as shown in FIG. The metal left vertical frame 231 has a left vertical frame main body 231a with two hollow portions lined up in the front direction, and an exterior glass frontage wall 231b extending inwardly from the exterior inner circumferential surface of the left vertical frame main body 231a.

[0039] The resin left vertical frame 232 is attached to the outer periphery and interior side of the metal left vertical frame 231, and has a projection wall portion 232a covering the outer periphery of the left vertical frame main body portion 231a, a visible wall portion 232b covering the interior side of the left vertical frame main body portion 231a, and an interior side glass front wall 232c having multiple hollow portions continuing to the inner periphery of the visible wall portion 232b.

[0040] The left vertical frame 23 has a glass opening formed by an exterior glass opening wall 231b of the metal left vertical frame 231 and an interior glass opening wall 232c of the resin left vertical frame 232. A glass opening reinforcing material is arranged within the glass opening, and a gray J The panel body 25 is held via a fitting channel.

[0041] The metal left vertical frame 231 has a steel reinforcement material 8 with an approximately U-shaped cross section that opens to the outside of the room disposed in the hollow portion on the outside of the left vertical frame main body portion 231a, and the reinforcement material 8 is fixed to the bottom wall of the glass opening with screws or the like.

[0042] The left vertical frame 23 has a heat-foaming material f provided on the outdoor side of the left vertical frame main body 231a, and the heat-foaming material f is provided in the reinforcing material 8 arranged in the hollow portion of the left vertical frame main body 231a.

[0043] The right vertical frame (door end frame) 24 that constitutes the inner shoji screen 2 has a metal right vertical frame 241 made of aluminum and a resin right vertical frame 242 made of resin, as shown in FIG. The metal right stile 241 has a right stile main body 241a with a hollow portion, an exterior glass frontage wall 241b extending from the exterior side of the right stile main body 241a inward, and a door-end groove portion 241c continuing to the outer periphery of the right stile main body 241a.

[0044] The resin right vertical frame 242 is attached to the indoor side of the metal right vertical frame 241, and has a resin right vertical frame main body 242a that covers the indoor side of the right vertical frame main body portion 241a and the door end gutter portion 241c, and an indoor side glass frontage wall 242b that continues in the inner circumferential direction of the resin right vertical frame main body 242a.

[0045] The right vertical frame 24 has a glass opening formed by an exterior glass opening wall 241b of the metal right vertical frame 241 and an interior glass opening wall 242b of the resin right vertical frame 242. A glass opening reinforcing material is arranged within the glass opening, and a gray J The panel body 25 is held via a fitting channel.

[0046] The metal right vertical frame 241 has a steel reinforcing member 8 disposed in the hollow portion of the right vertical frame main body portion 241a, and the reinforcing member 8 is fixed to the bottom wall of the glass opening with screws or the like. The right vertical frame 24 has a heat-foaming material f provided inside the door-end groove portion 241c.

[0047] As shown in Figure 2, the right vertical frame (joint frame) 34 that constitutes the outer shoji 3 has a right vertical frame main body 341a made of aluminum with a hollow portion, and a glass opening that continues to the inner periphery of the right vertical frame main body 341a.

[0048] Right frame body 341a has a steel reinforcing member 8 disposed in the hollow portion of right frame body 341a, and reinforcing member 8 is fixed to the bottom wall of the glass opening with screws or the like. The right vertical frame 34 has a heated foaming material f provided on the indoor side of the right vertical frame main body portion 341a.

[0049] The upper and lower frames 31, 32 and the left vertical frame (door end frame) 33 that make up the outer shoji 3 are constructed in the same way as the inner shoji 2, so their explanation will be omitted.

[0050] (Screen door) As shown in Figures 1 and 2, the screen door shoji 4 is formed by stretching a mesh around a screen frame consisting of an aluminum screen upper frame 41, a screen lower frame 42, and left and right screen vertical frames 43, 43 all around. The screen door shoji 4 has a guide piece 42a formed by extending downwardly the exterior side wall of the screen door bottom frame 42, and a door roller 94 is provided on the screen door bottom frame 42.

[0051] The screen door shoji 4 has a guide piece 42a of the screen door lower frame 42 guided into the screen door guide groove 126d (see Figure 3) of the bottom frame 12, and a screen door upper frame 41 guided into the outdoor-side visible wall 112b of the top frame 11, and is arranged so as to be freely slidable on the upper surface of the outdoor-side attachment 126 of the bottom frame 12.

[0052] As described above regarding the basic configuration, the window of this embodiment has an upper surface of the lower frame that is formed to be substantially flat, allowing people to smoothly enter and exit the window. The window of this embodiment has improved fire resistance compared to the sill. The window lower frame of this embodiment will be described in detail below.

[0053] -Bottom frame configuration- As shown in Figure 3(a), the window lower frame 12 of this embodiment has a lower frame main body 121, a resin indoor side cover member 122 arranged on the indoor side upper surface of the lower frame main body 121, a resin angle member 123 arranged on the indoor side of the lower frame main body 121, a rail-to-rail attachment 125 arranged on the upper surface of the lower frame main body 121, and an outdoor side attachment 126 arranged on the outdoor side upper surface of the lower frame main body 121.

[0054] In the lower frame body 121, a reinforcing material 821 is disposed in the hollow portion of the lower frame body portion 121a, and the reinforcing material 821 is fixed with screws b to the upper wall of the lower frame body 121. In the lower frame 12, heat-foaming materials f1 and f2 that foam within the hollow portion are provided in the reinforcing material 821, and a heat-foaming material f3 that foams toward the drainage hole is provided.

[0055] The indoor side cover member 122 has an upper wall portion 122a that forms the upper surface of the lower frame 12, and support legs 122b that extend downward from the outdoor side of the upper wall portion 122a. The indoor side cover member 122 is attached to the lower frame body 121 with the indoor side end of the upper wall portion 122a engaged with the upper end of the indoor side visible wall 121b of the lower frame body 121 and the outdoor side supported by the support legs 122b. The indoor side cover member 122 is provided with a heat foaming material f4 on the lower surface of the upper wall portion 122a.

[0056] The rail-to-rail attachment 125 has an aluminum upper wall portion 125a, an indoor support leg 125b extending downward from the indoor side of the upper wall portion 125a, an outdoor support leg 125c extending downward from the outdoor side of the upper wall portion 125a, and a resin cover 125d covering the upper surface of the upper wall portion 125a, and is supported on the upper surface of the lower frame body 121 between the lower inner rail 121c and the lower outer rail 121d.

[0057] The inter-rail attachment 125 has storage sections for placing heated foaming materials on the upper surface of the upper wall portion 125a and on the outside of the outdoor support leg 125c, and heated foaming materials f5 and f6 are provided respectively, and heated foaming material f7 is provided on the indoor side of the lower outer rail 121d.

[0058] The lower frame 12 has a guide groove 12a formed between the lower inner rail 121c and the indoor side support leg 125b of the inter-rail attachment 125, and an airtight material s21 and a heat-foaming material f8 are provided on the outdoor side surface of the lower inner rail 121c.

[0059] The exterior attachment 126 has an upper wall portion 126b, an interior viewing wall 126a extending downward from the interior side of the upper wall portion 126b, and a locking piece 126c continuing to the exterior side of the upper wall portion 126b. The exterior attachment 126 has an interior facing wall 126a formed with a through-hole through which a rail reinforcing material 822 (described later) passes, and an upper wall portion 126b formed with a screen guide groove 126d.

[0060] The outdoor attachment 126 has its locking piece 126c locked to the upper portion of the outdoor side visible wall 121f of the lower frame body 121 and its indoor side visible wall 126a placed on the upper surface of the outdoor side bottom wall 121e of the lower frame body 121, and the outdoor side hollow portion 12c is formed by the lower frame body 121 and the outdoor side attachment 126.

[0061] The lower frame 12 has a guide groove 12b formed between the lower outer rail 121d and the indoor side visible wall 126a of the outdoor side attachment 126, and an airtight material s22 is provided on the outdoor side surface of the lower outer rail 121d, and a heated foaming material f9 is provided along the entire longitudinal length of the indoor side surface of the indoor side visible wall 126a of the outdoor side attachment 126.

[0062] The lower frame 12 has a rail reinforcement material 822 arranged in the longitudinal center portion on the outdoor side of the lower outer rail 121d. As shown in Figures 3(a) and (b), the rail reinforcement 822 has a dimension shorter than the visible length of the lower frame 12, and has a support wall (indoor visible wall) 822a abutting the indoor side surface of the lower outer rail 121d, an indoor visible wall 822b at the lower end of the support wall 822a bending and extending in the outdoor direction, an outdoor visible wall 822c at the outdoor end of the indoor visible wall 822b bending and extending downward, and a fixed part (outdoor visible wall) 822d at the lower end of the outdoor visible wall 822c bending and extending in the outdoor direction.

[0063] The rail reinforcement 822 has a fixing portion 822d fixed to the upper surface of the outdoor bottom wall 121e of the lower frame body 121 with a screw b, and the outdoor exterior visible wall 822c and the indoor interior visible wall 822b pass through the penetration portion of the outdoor exterior attachment 126 to reach the lower outer rail 121d, and the indoor side surface of the support wall 822a is positioned in abutment against the outdoor exterior surface of the lower outer rail 121d.

[0064] The lower frame 12 has a heated foaming material f10 provided near the center in the facing direction (left and right direction) on the underside of the upper wall portion 126b of the outdoor attachment 126, and a heated foaming material f11 provided on the outdoor side surface of the outdoor facing wall 822c of the rail reinforcement material 822.

[0065] As described above, in the window of this embodiment, a rail reinforcement material 822 is attached to the outside of the lower outer rail 121d of the bottom frame 12, reinforcing the lower outer rail 121d. This prevents the lower outer rail 121d from collapsing to the outside of the room due to thermal expansion of each component or the load of the outer screen 3 in the event of a fire on the outside of the room, and prevents the outer screen 3 from falling off.

[0066] In particular, the window of this embodiment can efficiently improve fire resistance without using excess material by concentrating reinforcement on the central portion of the lower outer rail 121d, which is the portion most likely to collapse to the outside in the event of a fire on the outside of the room, with rail reinforcement material 822.

[0067] In addition, in the window of this embodiment, the rail reinforcement material 822 that reinforces the lower outer rail 121d is fixed to the lower frame body 121 within the outdoor hollow portion 12c, so that the outdoor hollow portion 12c of the lower frame 12 itself can be reinforced, the mounting portion of the rail reinforcement material 822 is protected and not exposed, and the design is also excellent.

[0068] Furthermore, in the window of this embodiment, by providing the rail reinforcement material 822 with a heated foaming material f11 that foams toward the outdoor side hollow portion 12c, the fixed portion 822d of the rail reinforcement material 822 can be protected in the event of a fire, and the outdoor side hollow portion 12c can also be protected, thereby further improving fire resistance.

[0069] In addition, in the window of this embodiment, a heated foam material f9 is provided along the entire length of the bottom frame 12 on the indoor side of the indoor side visible wall 126a of the outdoor attachment 126 of the bottom frame 12, so that in the event of a fire, the guide groove 12b of the outer screen 3 can seal the space between the lower end of the outer screen 3 and the bottom frame 12, and a heated foam material f10 is arranged near the center of the visible direction of the underside of the upper wall portion 126b, so that in the event of a fire, it fills the outdoor hollow portion 12c to protect the rail reinforcement material 822 and helps maintain the shape of the outdoor hollow portion 12c, thereby improving fire resistance.

[0070] -The structure of the bottom frame of a shoji screen- The window of this embodiment has improved fire resistance compared to the bottom frame of a shoji screen. The bottom frame of the window screen of this embodiment will be described in detail below with reference to the bottom frame 22 of the inner screen 2.

[0071] The bottom frame 22 of the inner window screen 2 of this embodiment has a metal bottom frame 221 made of aluminum and a resin bottom frame 222 made of resin, as shown in FIG. 4(a). The metal bottom frame 221 has screw holes 221d on the upper surface of the bottom frame main body 221a for connecting the left and right vertical frames 23, 24, and an exterior glass frontage wall 221b extending in the inward direction is provided at the exterior end of the upper surface of the bottom frame main body 221a, and an engagement piece 221e extending in the inward direction (upward) is provided at the interior end of the upper surface of the bottom frame main body 221a.

[0072] The resin bottom frame 222 has a resin bottom frame main body 222a that covers the indoor side of the bottom frame main body portion 221a of the metal bottom frame 221, and an indoor side glass front wall 222b extending in the inward direction is provided at the indoor side end of the upper surface of the resin bottom frame main body 222a, and an engagement piece 222e extending in the outer circumferential direction (downward) is provided at the outdoor side end of the upper surface of the resin bottom frame main body 222a.

[0073] The bottom frame 22 has an engaging piece 222e of the resin bottom frame 222 engaging with the engaging piece 221e of the metal bottom frame 221 from above, and a glass opening 22a is formed by the outdoor side glass opening wall 221b of the metal bottom frame 221 and the indoor side glass opening wall 222b of the resin bottom frame 222.

[0074] At the bottom of the glass opening 22a, the upper surface of the resin bottom frame main body 222a is positioned higher than the upper surface height of the bottom frame main body portion 221a, and the upper ends of the screw holes 221d on the upper surface of the metal bottom frame 221 and the upper surface of the resin bottom frame 222 are at approximately the same height.

[0075] The bottom frame 22 has a glass sagging prevention part 61, a glass opening reinforcement material 62, and a glazing channel 63 arranged within the glass opening 22a, and holds a panel body 25 made of insulating glass.

[0076] The glass sagging prevention part 61 is a long member made of metal such as steel, and as shown in Figures 4(a) and (b), has a top plate portion 61a, an outdoor side leg portion 61b which is formed by bending one side (the outdoor side) of the top plate portion 61a and extending downward, an indoor side leg portion 61c which is bent at the other side (the indoor side) of the top plate portion 61a and extending downward, and a horizontal piece 61d which is formed by extending a part of the indoor side leg 61c to the other side without bending. The glass-sagging prevention component 61 has a screw hole 61e for fixing to the top plate portion 61a, aligned with the position of the horizontal piece 61d in the longitudinal direction.

[0077] The glass sagging prevention part 61 is arranged within the glass opening 22a with the top plate portion 61a facing up, the horizontal piece 61d is arranged above the resin frame main body 222a, and the outdoor side leg portion 61b and the indoor side leg portion 61c are arranged above the frame main body portion 221a on the outdoor side of the resin frame main body 222a.

[0078] The glass-sagging prevention part 61 is located on the outdoor side of the resin frame body 222a, with the outdoor side leg part 61b and the indoor side leg part 61c sandwiched between the screw hole 221d, and is placed on the screw hole 221d.

[0079] The glass opening reinforcement material 62 is a long member made of a metal such as stainless steel, and is a long member with a roughly U-shaped cross section having a bottom portion 62a and rising walls 62b, 62b rising from both the indoor and outdoor sides of the bottom portion 62a, and is arranged on the upper surface of the top plate portion 61a and horizontal piece 61d of the glass sagging prevention part 61.

[0080] The glass sagging prevention part 61 and the glass opening reinforcement material 62 are arranged along the longitudinal direction of the glass opening, and are fastened together to the lower frame main body part 221a by screws b using the screw holes 221d. The lower frame body 221a has a reinforcing material in the hollow portion, and the glass sagging prevention part 61 and the glass frontage reinforcing material 62 are fastened together to the reinforcing material by a screw b. hand Good too.

[0081] The glass-sagging prevention component 61 has heated foaming materials f1, f2 provided on the outdoor-side lower surface of the top panel portion 61a and the outdoor-side surface of the outdoor-side leg portion 61b. The glass frontage reinforcing material 62 has a heat-foaming material f3 provided on the indoor side upper surface of the bottom portion 62a.

[0082] As described above, in the window of this embodiment, the glass opening reinforcement material 62 and the glass sagging prevention parts 61 are arranged along the longitudinal direction of the glass opening 22a, so that even if the resin bottom frame 222 melts during a fire, the panel body 25 can be held in place by the glass sagging prevention parts 61 and the glass opening reinforcement material 62, preventing the panel body 25 from falling.

[0083] Furthermore, the glass sagging prevention part 61 has a heated foaming material f2 provided on the outdoor side leg part 61b so as to face the outdoor side glass opening wall 221b of the glass opening 22a. Therefore, when the heated foaming material f2 foams in the event of a fire on the outdoor side, it seals the gap between the glass opening reinforcement material 62 and the glass sagging prevention part 61, and also densely covers the outdoor side of the glass opening reinforcement material 62 and the glass sagging prevention part 61, thereby preventing the glass opening reinforcement material 62 and the glass sagging prevention part 61 from being exposed to flames and melting.

[0084] In addition, in the window of this embodiment, a heated foaming material f1 is arranged on the underside of the top plate portion 61a of the glass sagging prevention part 61, which foams in the event of a fire and seals the space between the glass sagging prevention part 61 and the reinforcing material of the lower frame main body portion 221a, thereby improving fire resistance.

[0085] In addition, in the window of this embodiment, the top surface position of the metal frame main body 221a is lower than the top surface position of the resin frame main body 222a, and the resin frame main body 222a is engaged with and attached to the frame main body 221a from above, so that the resin frame main body 222a can adequately cover the indoor side of the frame main body 221a, providing excellent thermal insulation properties, and screw holes 221d are formed in the recess created by the difference in height between the top surface of the resin frame main body 222a and the top surface of the frame main body 221a, and glass sagging prevention parts 61 are arranged, so that the panel body can be prevented from sagging even if the resin frame melts in the event of a fire.

[0086] Furthermore, since the glass falling prevention part 61 has a horizontal piece 61d extending toward the inside of the room, by placing the horizontal piece 61d on the upper surface of the resin bottom frame main body 222a and placing the glass opening reinforcement material 62 on top of that, the glass opening reinforcement material 62 can be positioned stably and the glass falling prevention part 61 can be prevented from falling when fixed.

[0087] It goes without saying that the above embodiments do not limit the invention described in the claims, but are treated as examples. [Explanation of symbols]

[0088] 12: Bottom frame 121: Lower frame body 121a: Lower frame body part 121b: Interior side wall 121c: Lower inner rail 121d: Lower outer rail 126: Lower frame cover part 822: Rail reinforcement

Claims

1. It has a frame and a shoji screen. The bottom frame of the frame body has a bottom rail that guides the shoji screen. A rail reinforcement material is placed on the outside of the longitudinal center of the lower rail. The rail reinforcement is fixed to the exterior-facing wall of the sill on the exterior side of the lower rail.

2. A door comprising a frame and a shoji screen. The bottom frame of the frame body has a bottom rail that guides the shoji screen. A rail reinforcement material is placed on the outside of the longitudinal center of the lower rail. A window in which the fixed part of the rail reinforcement is covered by an exterior attachment supported on the exterior side of the lower rail.

Images