Building materials

Abstract

To provide a fitting with improved fire protecting performance.SOLUTION: In a projected window 1, an upper stile 21 of a window frame 2 is a composite frame material having a metal-frame material 21A and a resin-frame material 21B, and an upper stile 31 of a sash 3 is a composite stile material having a metal-stile material 31A and a resin-stile material 31B. The resin-frame material 21B is disposed on the indoor side in the Z-axis direction with respect to the resin-stile material 31B. A metal fitting 7 having a mounting piece portion 72 disposed between the resin-frame material 21A and the resin-stile material 31B in the Z-axis direction is attached to the metal-frame material 21A. A thermal expansive fire-resistant material 11 disposed on the indoor side in the Z-axis direction with respect to the metal-stile material 31A and the resin-stile material 31B is mounted to the mounting piece portion 72.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a fitting configured as a casement window such as a sliding window. [Background technology]

[0002] A conventional sliding window, which comprises a frame and a shoji screen attached to the frame so that it can be opened and closed, is known as a fitting (see Patent Document 1). The frame is made up of an upper frame, a lower frame, and left and right vertical frames, each of which is made up of a metal frame and a resin frame that covers the interior side of the metal frame. The shoji screen is made up of a frame assembly formed by an upper frame, a lower frame, and left and right vertical frames, with glass installed inside the frame, and each of the frame members that make up the frame assembly is made up of a composite frame material having a metal frame and a resin frame that covers the interior side of the metal frame. When this fitting is closed, the resin frame and the resin frames are arranged facing each other in the front direction, and a sealant attached to the resin frame abuts against the resin frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-144877 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the building fixture described in Patent Document 1, a thermally expandable fire-resistant material is placed between the exterior-facing surface of the upper frame's resin frame and the upwardly extending portion of the exterior-facing surface of the upper stile, but the space between the aforementioned exterior-facing surfaces is large, and in the event of a fire, it may take some time for the thermal expansion of the thermally expandable fire-resistant material to close the space. For example, it is possible to install high-strength laminated glass within the frame assembly to protect against flying objects, etc., but there is a risk that gas will be generated from the interlayer between the panes of laminated glass in the event of a fire, and it is desirable to seal the gap between the upper frame and upper frame as soon as possible to reduce the risk of rising gas entering the room through the gap between the upper frame and upper frame.

[0005] An object of the present invention is to provide a building material that can improve fire resistance. [Means for solving the problem]

[0006] The building fixture of the present invention comprises a frame body and a shoji screen that can be opened and closed relative to the frame body to either the outside or the inside of the room, the frame body having an upper frame, a lower frame and left and right vertical frames, at least the upper frame having a metal frame material and a resin frame material that engages with the metal frame material, the shoji screen having a frame body and a surface material that is arranged within the frame body, the frame body having an upper frame, a lower frame and left and right vertical frames, at least the upper frame having a metal frame material and a resin frame material that engages with the metal frame material, the resin frame material being arranged on the inside of the room in the projection direction relative to the resin frame material, the metal frame material being fitted with a metal fitting having an attachment piece that is arranged between the resin frame material and the resin frame material in the projection direction, and the attachment piece being fitted with a thermally expandable fire-resistant material that is arranged on the inside of the room in the projection direction relative to the metal frame material and the resin frame material. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a fixture that can improve fire resistance. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an interior view showing a sliding window according to an embodiment of the present invention. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the sliding window according to the embodiment. [Figure 3] FIG. 2 is a cross-sectional view showing the sliding window according to the embodiment. [Figure 4]FIG. 2 is a vertical cross-sectional view showing a main part of the sliding window according to the embodiment. [Figure 5] FIG. 2 is an explanatory diagram showing the main parts of the sliding window according to the embodiment in the event of a fire. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Configuration of this embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 3, a sliding window 1 as a fixture according to this embodiment includes a window frame 2 (frame body) and a shoji screen 3 that can be opened and closed toward the outside relative to the window frame 2. The window frame 2 has an upper frame 21, a lower frame 22, and left and right vertical frames 23. The upper frame 21 and the left and right vertical frames 23 are composite frame materials having metal frame members 21A, 23A and resin frame members 21B, 23B that engage with the metal frame members 21A, 23A, and the lower frame 22 is a composite frame material having a metal frame member 22A and a resin cover 22B that engages with the metal frame member 22A. The shoji screen 3 includes a frame body 30 and a double-glazed panel 40 that serves as a face material and is placed within the frame body 30. The frame body 30 has an upper frame 31, a lower frame 32, and left and right vertical frames 33, and the upper frame 31, the lower frame 32, and the left and right vertical frames 33 are composite frame materials having metal frame members 31A, 32A, 33A and resin frame members 31B, 32B, 33B that engage with the metal frame members 31A, 32A, 33A. In the following description, the left-right direction of the sliding window 1 is the X-axis direction, the up-down direction of the sliding window 1 is the Y-axis direction, and the projection direction of the sliding window 1 is the Z-axis direction. The X, Y, and Z-axis directions are perpendicular to each other.

[0010] The double-glazing panel 40 has wired glass 41 on the outside of the room and laminated glass 42 on the inside of the room, and the laminated glass 42 has a pair of float glass 43 (glass) and an interlayer film 44 placed between the pair of float glass 43. In this embodiment, the interlayer film 44 is made of PVB (polyvinyl butyral) resin and bonds the pair of float glass 43 together. The double-glazing panel 40 has improved fire resistance by providing the wired glass 41 on the outside of the room, and has laminated glass 42 on the inside side of the wired glass 41 to increase the glass strength against flying objects. Although the present embodiment is provided with a double-glazed glass panel 40, a double-glazed glass panel can also be constructed by arranging wire-reinforced glass 41 on the indoor side and laminated glass 42 on the outdoor side. Also, a double-glazed glass panel can be constructed using glass different from the glass described above. Furthermore, a single-layer or triple-layer or more double-glazed glass panel can be used as a surface material.

[0011] The metal frame material 21A of the upper frame 21 is a single-piece extruded aluminum section. As shown in FIG. 4, it has a metal exterior facing surface 211, a metal interior facing surface 212, a metal inner periphery facing surface 213 (upper frame facing surface), a metal outer periphery facing surface 214, and a metal connecting surface 215 connecting the metal interior facing surface 213 and the metal outer periphery facing surface 214 between the metal exterior facing surface 211 and the metal interior facing surface 212. The metal exterior facing surface 211 is continuous with the metal inner periphery facing surface 213 and the metal outer periphery facing surface 214, and the metal interior facing surface 212 is continuous with the metal inner periphery facing surface 213. The metal exterior facing surface 211, the metal inner periphery facing surface 213, the metal outer periphery facing surface 214, and the metal connecting surface 215 form a hollow portion 216 along the X-axis direction. An airtight material 4 is attached to the metal exterior visible surface portion 211 and abuts against the upper frame 31 when the sliding window 1 is closed. The metal inner periphery visible surface portion 213 is formed with a metal engagement piece 217 extending downward in the Y-axis direction and a metal engagement piece 218 positioned on the interior side of the room relative to the metal engagement piece 217, and the resin frame material 21B is engaged with the metal engagement piece 217. The metal engagement piece 217 extends downward further than an engagement piece 218A, which will be described later. The tip of the metal engagement piece 217 is bent toward the exterior side of the room. The metal engagement piece 218 has an engagement piece 218A and a protrusion 218B that extend downward from the metal inner periphery visible surface portion 213. The engagement piece 218A extends downward further than the protrusion 218B from a position on the exterior side of the room relative to the protrusion 218B, and an engagement protrusion that protrudes toward the interior side is formed at its tip. In addition, a positioning protrusion 219 that determines the expected position of the frame-side thermally expandable fireproof material 12 (described later) is formed on the metal inner peripheral visible surface 213, protruding downward from a position on the outdoor side further than the metal engaging piece 217. In this embodiment, the positioning protrusion 219 is positioned on a vertical line with respect to the mounting piece 72 of the fitting 7 (described later). As shown in Figures 2 and 4, the resin frame material 21B of the upper frame 21 is a resin extrusion-molded integrally, and has a resin chamber exterior facing surface 211B, a resin chamber interior facing surface 212B, a resin inner periphery facing surface 213B, and a resin outer periphery facing surface 214B. The resin chamber exterior facing surface 211B and the resin chamber interior facing surface 212B are continuous with the resin inner periphery facing surface 213B and the resin outer periphery facing surface 214B. The resin outer periphery facing surface 214B extends further toward the interior than the resin chamber interior facing surface 212B. An airtight material 5 is provided on the inner periphery of the resin chamber exterior facing surface 211B, and this airtight material 5 abuts against the upper frame 31 when the sliding window 1 is closed. The resin exterior visible surface portion 211B is positioned opposite the resin visible surface portion 311B of the upper frame 31 described later in the Z-axis direction when the sliding window 1 is closed, and therefore the resin frame material 21B is positioned on the interior side of the resin frame material 31B of the upper frame 31. The resin outer periphery projection surface portion 214B is formed with a hook-shaped resin engagement portion 215B that engages with the metal engagement piece 217 and a resin engagement piece 216B that engages with the metal engagement piece 218. The resin engagement portion 215B extends upward from the exterior end of the resin outer periphery projection surface portion 214B and is formed in a shape that is bent toward the interior, and this bent portion engages with the tip of the metal engagement piece 217 in the Y-axis direction. Here, the resin engagement portion 215B is positioned between the metal engagement piece 217 and an attachment piece portion 72 of the metal fitting 7, which will be described later, in the Z-axis direction, so that the resin engagement portion 215B does not come off the metal engagement piece 217. The tip side of the resin engagement piece 216B is formed in a stepped shape, and this stepped portion engages with the aforementioned engagement protrusion of the engagement piece 218A in the Y-axis direction. The tip of resin engaging piece 216B is disposed between engaging piece 218A and protrusion 218B, so that resin engaging piece 216B does not come off metal engaging portion 218.

[0012] The metal frame material 22A of the lower frame 22 is a single-piece extruded aluminum section, and as shown in Figure 2, has a hollow exterior metal frame portion 221 and a hollow interior metal frame portion 222 arranged on the interior side and inner periphery of the exterior metal frame portion 221. An airtight material 4 that abuts against the lower frame 32 is attached to the exterior facing surface 223 of the exterior metal frame portion 221, and a thermally expandable fire-resistant material 10 is provided on the inner periphery facing surface 225 of the exterior metal frame portion 221, facing the lower frame 32 in the Y-axis direction. The exterior facing surface 226 of the indoor metal frame portion 222 is arranged on the interior side of the lower frame 32, and an airtight material 4 is attached to its inner periphery, and a thermally expandable fire-resistant material 10 is provided adjacent to the airtight material 4 below. At least a portion of the thermally expandable fire-resistant material 10 provided on the exterior visible surface 226 of the interior metal frame 222 faces the interior surface of the lower frame 32 in the Z-axis direction, and the rest of the material is arranged facing the space formed between the lower frame 32 and the exterior metal frame 221 in the Z-axis direction. The resin cover 22B of the lower frame 22 is engaged with the indoor metal frame portion 222, and covers the indoor metal frame portion 222 from the indoor side and the inner periphery side. An operating device 6 having an operating handle for opening and closing the shoji screen 3 is attached to the lower frame 22.

[0013] The metal frame material 23A of the left and right vertical frames 23 is an aluminum extrusion molded as a single unit, and as shown in Figure 3, has a metal projection surface portion 231, and a metal engagement piece portion 232 and a metal engagement portion 233 that extend inward in the X-axis direction from the metal projection surface portion 231, with the metal engagement piece portion 233 being positioned on the indoor side of the metal engagement piece portion 232. In addition, an airtight material 4 that abuts against the vertical frame 33 when the sliding window 1 is in a closed state is attached to the metal projection surface portion 231. The resin frame material 23B of the left and right vertical frames 23 is a single extruded resin profile, formed into a hollow frame shape with a resin exterior facing surface 231B, and has a resin engaging portion 232B that engages with the metal engaging portion 232 and a resin engaging portion 233B that engages with the metal engaging portion 233. The engaging structure between the metal engaging portion 232 and the resin engaging portion 232B is generally similar to the engaging structure between the metal engaging portion 217 and the resin engaging portion 215B of the upper frame 21 described above, and the engaging structure between the metal engaging portion 233 and the resin engaging portion 233B is generally similar to the engaging structure between the metal engaging portion 218 and the resin engaging portion 216B of the upper frame 21 described above, so detailed description of these will be omitted. An airtight material 5 is provided on the inner periphery of the resin exterior facing surface 231B, which abuts against the vertical frame 33 when the sliding window 1 is closed.

[0014] The metal frame material 31A of the upper frame 31 is a single extruded aluminum section, and is formed into a hollow frame shape with a metal exterior facing surface 311 (the upper frame exterior facing surface), a metal interior facing surface 312, a metal inner periphery facing surface 313, and a metal outer periphery facing surface 314 (the upper frame exterior facing surface). The metal exterior facing surface 311 and the metal interior facing surface 312 are continuous with the metal inner periphery facing surface 313 and the metal outer periphery facing surface 314. The metal exterior facing surface 311 and the metal interior facing surface 312 form a hollow portion 316 along the X-axis direction. When the sliding window 1 is closed, the metal exterior facing surface 311 is positioned opposite the metal inner periphery facing surface 213 of the upper frame 21 in the Y-axis direction, with a gap between them. The metal exterior visible surface portion 311 extends downwardly beyond the metal inner periphery visible surface portion 313, and extends upwardly beyond the metal outer periphery visible surface portion 314. The upper and lower edges of the metal interior visible surface portion 312 are formed with hook-shaped metal engaging portions 315 that engage with resin engaging portions 312B (described later) of the resin frame material 31B. The resin frame material 31B of the upper frame 31 is a resin profile extruded as a single unit, and in this embodiment, is composed of a resin sighting surface 311B. Resin engagement portions 312B that engage with the metal engagement portions 315 are formed on the resin sighting surface 311B and protrude toward the exterior. The resin sighting surface 311B extends downward beyond the metal inner periphery sighting surface 313, and this extension, together with the portion of the metal exterior sighting surface 311 that extends downward beyond the metal inner periphery sighting surface 313, and the metal inner periphery sighting surface 313, form a retaining groove that holds the upper edge of the double-glazed glass panel 40 along the X-axis direction.

[0015] As shown in Figure 2, the lower frame 32 is configured in roughly the same manner as the upper frame 31, so a detailed description will be omitted. The lower frame 32 is disposed upside down compared to the upper frame 31, and when the sliding window 1 is closed, the resin facing surface 311B of the lower frame 32 is in contact with an airtight material 4 provided on the exterior facing surface 226 of the indoor metal frame portion 222 of the lower frame 22. In addition, a thermally expandable fire-resistant material 10 is provided on the portion of the metal exterior facing surface 311 of the lower frame 32 that extends downward beyond the metal outer periphery facing surface 314. This thermally expandable fire-resistant material 10 extends in the X-axis direction over the entire length of the lower frame 32 and faces the exterior facing surface 226 of the indoor metal frame portion 222 of the lower frame 22 at a distance in the Z-axis direction.

[0016] The metal frame members 33A of the left and right vertical frames 33 are integrally extruded aluminum sections, and as shown in FIG. 3, are hollow frames having a metal exterior facing surface 331, a metal interior facing surface 332, a metal inner periphery facing surface 333, and a metal outer periphery facing surface 334. The metal exterior facing surface 331 extends inward in the X-axis direction beyond the metal inner periphery facing surface 333 and outward beyond the metal outer periphery facing surface 334. The metal outer periphery facing surface 334 extends toward the interior of the room beyond the metal interior facing surface 332, and its interior end is formed with a metal engaging portion that can engage with the resin frame member 33B. The metal interior facing surface 332 is also formed with a metal engaging portion that can engage with the resin frame member 33B. The resin frame members 33B of the left and right vertical frames 33 are formed with resin facing surfaces, and these facing surfaces have two resin engagement portions that protrude to the outside of the room and are configured to be able to engage with the metal engagement portions of the metal frame members 33A. The resin frame members 33B extend more inward than the metal inner peripheral facing surface 333, and this extension, the portion of the metal exterior facing surface 331 that extends inward, and the metal inner peripheral facing surface 333 form a retaining groove that holds the vertical edge of the double-glazed glass panel 40 along the Y-axis direction.

[0017] As shown in FIGS. 2 and 4, the upper frame 21 described above has a metal fitting 7 attached to its metal engagement piece 217. The metal fitting 7 is made of metal, and in this embodiment is made of stainless steel, but may also be made of steel. The metal fitting 7 extends in the X-axis direction over the entire length of the upper frame 21. The metal fitting 7 has an attachment piece 71 attached to the metal engagement piece 217, an attachment piece 72 attached by attaching the thermally expandable fire-resistant material 11 to the exterior surface, and a connecting piece 73 connecting the attachment piece 71 and the attachment piece 72. The attachment piece 71 of the upper frame 21 is arranged along the metal engagement piece 217 and is fastened to the metal engagement piece 217 with a screw 8. The attachment piece 72 of the upper frame 21 is aligned with the Y-axis direction. The mounting piece 72 is disposed between the resin exterior facing surface 211B of the resin frame member 21B of the upper frame 21 and the resin facing surface 311B of the upper frame 31 in the Z-axis direction. Therefore, the thermally expandable fire-resistant material 11 attached to the mounting piece 72 is disposed on the indoor side of the metal frame member 31A and the resin frame member 31B in the Z-axis direction. The connecting piece 73 extends along the Z-axis direction, connecting its outdoor end to the mounting piece 72 and its indoor end to the mounting piece 71. The mounting piece 72 and the thermally expandable fire-resistant material 11 are disposed above the airtight material 5 provided on the resin exterior facing surface 211B of the upper frame 21. The thermally expandable fire-resistant material 11 extends along the entire length of the metal fitting 7 in the X-axis direction. In this embodiment, the upper portion of the thermally expandable fire-resistant material 11 is disposed above the metal outer periphery facing surface 314 of the upper frame 31. Furthermore, frame-side thermally expandable fire-resistant material 12 is affixed to metal inner peripheral visible surface 213 of upper frame 21, and its visible position is determined by positioning protrusion 219. Frame-side thermally expandable fire-resistant material 12 extends in the X-axis direction over the entire length of upper frame 21, with its outdoor portion facing metal outer peripheral visible surface 314 of upper frame 31 at a distance in the Y-axis direction, its indoor portion facing the upper edge of thermally expandable fire-resistant material 11 attached to metal fittings 7 at a distance in the Y-axis direction, and its middle portion facing the joint between metal frame material 31A and resin frame material 31B of upper frame 31 and resin frame material 31B at a distance in the Y-axis direction. Furthermore, a stile-side thermally expandable fire-resistant material 13 is provided on the metal exterior visible surface 311 of the upper stile 31, in a portion that extends above the metal outer periphery visible surface 314. This stile-side thermally expandable fire-resistant material 13 extends in the X-axis direction over the entire length of the upper stile 31, and is disposed at a distance in the Z-axis direction from the metal fitting 7 attached to the metal engagement piece 217.

[0018] 2, the lower frame 22 has thermally expandable fire-resistant material 10 attached to the exterior-facing surface 226 of the interior metal frame portion 222. This thermally expandable fire-resistant material 10 is provided in pieces at both ends of the lower frame 22 and is positioned below the airtight material 4. Furthermore, at least a portion of this thermally expandable fire-resistant material 10 is positioned facing the interior surface of the resin frame material 32B in the Z-axis direction, and the remaining portion is positioned facing the space between the exterior metal frame portion 221 and the lower frame 32. In addition, a thermally expandable fire-resistant material 10 is provided on the inner peripheral visible surface 225 of the outdoor metal frame portion 221, extending in the X-axis direction over the entire length of the lower frame 22, and is arranged opposite the metal frame material 32A and the resin frame material 32B at a distance in the Y-axis direction. Furthermore, in the portion of the metal exterior visible surface 311 of the lower frame 32 that extends downward below the metal outer periphery visible surface 314 of the lower frame 32, a thermally expandable fire-resistant material 10 is provided extending in the X-axis direction over the entire length of the lower frame 22, and is arranged opposite the exterior visible surface 226 of the indoor metal frame portion 222 at a distance in the Z-axis direction.

[0019] The left and right vertical frames 23 have the aforementioned metal fittings 7 attached to their metal engagement pieces 232 as shown in Figure 3, and the thermally expandable fire-resistant material 11 is attached to the mounting pieces 72 of these metal fittings 7 over the entire length of the vertical frames 23, and is positioned on the indoor side in the Z-axis direction relative to the metal frame material 33A and resin frame material 33B of the vertical frame 33. Further, the metal exposed surface portion 231 of the vertical frame 23 is provided with frame-side thermally expandable fire-resistant materials 12 that face the metal frame material 33A at an interval in the X-axis direction. The frame-side thermally expandable fire-resistant materials 12 are provided in pieces at both ends of the vertical frame 23. Furthermore, in the portion of the metal exterior visible surface 331 of the vertical frame 33 that extends outward in the X-axis direction beyond the metal outer periphery visible surface 334, a stile-side thermally expansive fire-resistant material 13 is provided at a distance in the Z-axis direction from the metal engaging piece 232 of the vertical frame 23. This stile-side thermally expansive fire-resistant material 13 extends in the Y-axis direction over the entire length of the vertical frame 33.

[0020] In the sliding window 1 described above, in the event of an outdoor fire, the thermally expandable fire-resistant materials 10 to 13 thermally expand and seal the gap between the window frame 2 and the shoji screen 3. The gap between the upper frame 21 and the upper frame 31 is sealed as follows. As shown in FIG. 5, the thermally expandable fire-resistant material 11 attached to the mounting piece 72 thermally expands toward the exterior in the Z-axis direction. Because the thermally expandable fire-resistant material 11 is located close to at least the interior surface of the resin frame member 31B of the upper frame 31, it quickly abuts against the mounting piece 72 and seals the gap between the mounting piece 72 and the resin frame member 31B. Even if the resin frame member 31B melts, the thermally expandable fire-resistant material 11 can quickly seal the gap between the upper frame 21 and the upper frame 31 in the Z-axis direction by abutting against the interior surface of the metal frame member 31A. Furthermore, the frame-side thermally expandable fire-resistant material 12 thermally expands downward in the Z-axis direction, sealing the gap, particularly the exterior portion, between the metal inner peripheral visible surface 213 of the upper frame 21 and the metal outer peripheral visible surface 314 of the upper frame 31. The middle and exterior portions of the frame-side thermally expandable fire-resistant material 12 thermally expand, filling the space between the metal inner peripheral visible surface 213 of the upper frame 21 and the thermally expanding thermally expandable fire-resistant material 11. Furthermore, the frame-side thermally expandable fire-resistant material 13 thermally expands toward the interior of the room in the Z-axis direction, filling the space between the metal exterior visible surface 311 of the upper frame 31 and the thermally expanding thermally expandable fire-resistant material 11 and frame-side thermally expandable fire-resistant material 12. In this way, the gap between the upper frame 21 and the upper frame 31 is sealed. The gap between the left and right vertical frames 23 and the left and right vertical stiles 33 is quickly sealed by the thermally expandable fire-resistant material 11 attached to the attachment piece 72, the frame-side thermally expandable fire-resistant material 12, and the stile-side thermally expandable fire-resistant material 13, in substantially the same manner as sealing the gap between the upper frame 21 and the upper stile 31. The gap between the lower frame 22 and the lower frame 32 is sealed as follows: The thermally expandable fire-resistant material 10 attached to the exterior visible surface 226 of the indoor metal frame portion 222 of the lower frame 22 thermally expands toward the outside of the room in the Z-axis direction, and quickly abuts against the exterior surface of the resin frame material 32B of the lower frame 32 because the distance is short, quickly sealing the gap between the lower frame 22 and the lower frame 32. In addition, the thermally expandable fire-resistant material 10 attached to the inner peripheral visible surface 225 of the outdoor metal frame portion 221 of the lower frame 22 thermally expands upward in the Y-axis direction, sealing the space between the upper frame 21 and the lower frame 32 in the Y-axis direction. Furthermore, the thermally expandable fire-resistant materials 10 provided on the metal exterior visible surface 331 of the lower frame 32 thermally expand toward the interior of the room in the Z-axis direction, thereby filling the space between the exterior visible surface 226 and each of the thermally expandable fire-resistant materials 10 provided on the inner peripheral visible surface 225 of the exterior metal frame 221. In this way, the gap between the lower frame 22 and the lower frame 32 is quickly sealed. In this way, the gap between the window frame 2 and the shoji screen 3 is quickly sealed, quickly insulating the interior from the exterior of the sliding window 1 and improving fire resistance. Furthermore, even if gas is generated from the interlayer 44 of the laminated glass 42, the gap between the window frame 2 and the shoji screen 3 is quickly sealed as described above, preventing the gas from entering the interior of the room.

[0021] [Variations] In the above embodiment, the metal fittings 7 and the thermally expandable fire-resistant materials 11 are also provided on the left and right vertical frames 23, but the configuration of the metal fittings 7 and the thermally expandable fire-resistant materials 11 provided on the left and right vertical frames 23 may be omitted. Even in this case, the gap between the upper frame 21 and the upper frame 31 can be quickly sealed, so that even if gas that may be generated from the intermediate film 44 rises and attempts to enter the room through a gap that may occur in the upper frame 31 through the space between the upper frame 21 and the upper frame 31, the thermally expandable fire-resistant materials 11 provided on the upper frame 21 can prevent the gas from entering the room. In the above embodiment, the metal fittings 7 are attached to the metal engagement pieces 217, 232, but may also be attached to other portions of the metal frame materials 21A, 23A of the upper frame 21 and the vertical frame 23. In the above embodiment, the resin engagement portions 215B, 232B are arranged between the mounting piece portion 72 of the metal fitting 7 and the metal engagement piece portions 217, 232, but even if they are not arranged in this manner, if the engagement structure does not allow the metal engagement piece portions 217, 232 and the resin engagement portions 215B, 232B to disengage, the resin engagement portions 215B, 232B do not have to be arranged between the mounting piece portion 72 and the metal engagement piece portions 217, 232. In the above embodiment, the metal fittings 7 have a connecting piece portion 73, but if the mounting piece portion 72 can be positioned on the indoor side of the resin frame materials 31B, 33B in the Z-axis direction without this configuration, the connecting piece portion 73 may be omitted and the mounting piece portion 71 and the mounting piece portion 72 may be directly connected together. In the above embodiment, frame-side thermally expandable fire-resistant material 12 is provided on the metal inner peripheral visible surface portion 213 of the upper frame 21 and the metal visible surface portions 231 of the left and right vertical frames 23, but even if this frame-side thermally expandable fire-resistant material 12 is not provided, the configuration of the frame-side thermally expandable fire-resistant material 12 may be omitted if it is possible to sufficiently seal the space between the upper frame 21 and the upper frame 31 and the space between the vertical frame 23 and the vertical frame 33. In the above embodiment, the frame-side thermal expansion fire-resistant material 13 is provided on the metal exterior visible surface 311 of the upper frame 31 and the metal exterior visible surface 331 of the left and right vertical frames, but even if this frame-side thermal expansion fire-resistant material 13 is not provided, the structure of the frame-side thermal expansion fire-resistant material 13 may be omitted if the space between the upper frame 21 and the upper frame 31 and the space between the vertical frame 23 and the vertical frame 33 can be sufficiently sealed. In the above embodiment, the sliding window 1 is configured so that the shoji screen 3 can be opened and closed to the outside of the room, but this is not limiting, and the shoji screen 3 may be configured so that it can be opened and closed to the inside of the room. In the above embodiment, a sliding window 1 in which the shoji screen 3 slides out horizontally has been described as a fixture, but other types of hinged windows may also be used, such as a vertical sliding window in which the shoji screen 3 slides out vertically.

[0022] [Summary of the invention] The building fixture of the present invention comprises a frame body and a shoji screen that can be opened and closed relative to the frame body to either the outside or the inside of the room, the frame body having an upper frame, a lower frame and left and right vertical frames, at least the upper frame having a metal frame material and a resin frame material that engages with the metal frame material, the shoji screen having a frame body and a surface material that is arranged within the frame body, the frame body having an upper frame, a lower frame and left and right vertical frames, at least the upper frame having a metal frame material and a resin frame material that engages with the metal frame material, the resin frame material being arranged on the inside of the room in the projection direction relative to the resin frame material, the metal frame material being fitted with a metal fitting having an attachment piece that is arranged between the resin frame material and the resin frame material in the projection direction, and the attachment piece being fitted with a thermally expandable fire-resistant material that is arranged on the inside of the room in the projection direction relative to the metal frame material and the resin frame material. According to the building fixture of the present invention, in the event of a fire, the thermally expandable fire-resistant material attached to the mounting piece of the metal fittings attached to the metal frame material will thermally expand, sealing the space between the mounting piece and the resin or metal frame material, thereby quickly sealing the space between the upper frame and the upper frame, thereby improving fire resistance.

[0023] In the building fixture of the present invention, in the upper frame, the metal frame material has a metal engaging piece portion extending downward, and the resin frame material has a resin engaging portion that engages with the metal engaging piece portion, and the metal fittings may have an attachment piece portion attached to the metal engaging piece portion and a connecting piece portion that connects the attachment piece portion and the mounting piece portion. With this type of fixture, the metal frame material of the upper frame has a metal engaging piece portion extending downward, to which the mounting piece portion of the metal fittings is attached. Therefore, even if the mounting piece portion is positioned away from the metal frame material toward the inner periphery of the fixture, the metal engaging piece portion acts as a backing against the mounting piece portion, making it less likely for the metal fittings to deform, and the gap between the upper frame and the upper stile can be sealed as desired in the event of a fire.

[0024] In the fixture of the present invention, the resin engagement portion may be disposed between the mounting piece portion and the metal engagement piece portion. With this configuration, the resin engaging portion is positioned between the mounting piece portion of the metal fittings and the metal engaging piece portion, making it difficult for the resin engaging portion to disengage from the metal engaging piece portion even in the event of a fire, reducing the risk of the resin frame material coming off and falling off the metal frame material.

[0025] In the building fixture of the present invention, the upper frame has an upper frame projection surface portion, and the upper frame projection surface portion may be provided with a frame-side thermally expandable fire-resistant material, at least a portion of which is arranged facing the metal frame material of the upper stile in the viewing direction of the upper frame. With this configuration, the frame-side thermally expandable fire-resistant material thermally expands from the upper frame projection surface side toward the metal frame material, thereby sealing the gap between the upper frame and the upper frame even in the projection direction of the upper frame, thereby improving fire resistance. Furthermore, when the heat-expanding fire-resistant material is attached to the mounting piece portion in the above-described arrangement, there is a risk that the gap between the upper frame and the heat-expanding fire-resistant material in the visible direction of the upper frame may become larger than when the heat-expanding fire-resistant material is placed in a position above the position of the shoji screen, for example. However, the frame-side heat-expanding fire-resistant material described above can seal the gap between the upper frame and the upper frame in the visible direction, thereby further improving fire resistance.

[0026] In the building fixture of the present invention, the upper frame has an upper frame projection surface portion, and the upper frame has an upper frame projection surface portion that faces the upper frame projection surface portion at a distance in the projection direction of the upper frame, and an upper frame exterior projection surface portion that extends above the upper frame projection surface portion, and the upper frame exterior projection surface portion may be provided with a frame-side thermal expansion fire-resistant material. With this configuration, the thermal expansion of the frame-side heat-expansion fire-resistant material can seal the gap between the frame and the shoji screen on the outside of the room, further than the heat-expansion fire-resistant material attached to the metal fittings. Therefore, a wider area can be sealed between the frame and the shoji screen, improving fire resistance compared to when only heat-expansion fire-resistant material attached to the metal fittings is used.

[0027] In the fitting of the present invention, the face material may be composed of a double-glazed glass panel having wire-reinforced glass and laminated glass, and the laminated glass may have a pair of glass panes and an interlayer film disposed between the pair of glass panes. According to this configuration, the face material has wired glass, which improves fire resistance. Also, the face material has laminated glass, which improves strength and increases the face material's resistance to flying objects. In addition, when using such a surface material, there is a risk that gas that may be generated from the intermediate film in the event of a fire will rise upward and enter the room inside through the gap between the upper frame and upper stile.However, in the present invention, the gap between the upper frame and upper stile is quickly blocked by the heat-expanding fire-resistant material attached to the mounting piece portion in the above-mentioned arrangement, thereby eliminating the risk of gas entering the room inside as mentioned above. [Explanation of symbols]

[0028] 1...sliding window (door), 10, 11...thermal expansion fireproof material, 12...frame side thermal expansion fireproof material, 13...stile side thermal expansion fireproof material, 2...window frame (frame body), 21...upper frame, 211, 311, 331...metal exterior facing surface, 211B, 231B...resin exterior facing surface, 212, 312, 332...metal interior facing surface, 212B...resin interior facing surface, 213, 313, 333...metal interior Peripheral prospective surface part, 213B...Resin inner peripheral prospective surface part, 214,314,334...Metal outer peripheral prospective surface part, 214B...Resin outer peripheral prospective surface part, 215...Metal connection surface part, 215B,232B, 312B...Resin engagement part, 216,316...Hollow part, 216B,233B...Resin engagement piece part, 217,232...Metal engagement piece part, 218,233,315...Metal engagement part, 218A...Engagement Half portion, 218B... protrusion, 219... positioning protrusion, 21A, 22A, 23A... metal frame material, 21B, 23B... resin frame material, 22... lower frame, 221... exterior metal frame portion, 222... interior metal frame portion, 223... exterior visible surface portion, 225... inner peripheral visible surface portion, 226... exterior visible surface portion, 22B... resin cover, 23... vertical frame, 231... metal visible surface portion, 3... shoji screen, 30... frame body, 31... upper Frame, 311B...resin mounting surface, 31A, 32A, 33A...metal frame material, 31B, 32B, 33B...resin frame material, 32...lower frame, 33...vertical frame, 4, 5...airtight material, 40...double glass panel, 41...wired glass, 42...laminated glass, 43...float glass, 44...interlayer film, 6...operating device, 7...metal fittings, 71...mounting piece, 72...attaching piece, 73...connecting piece, 8...screw.

Claims

1. A frame body and a shoji screen that can be opened and closed to the outside or inside of the frame body, The frame body has an upper frame, a lower frame, and left and right vertical frames, At least the upper frame has a metal frame material and a resin frame material that engages with the metal frame material, The shoji screen has a frame and a surface material disposed within the frame, The frame has an upper frame, a lower frame, and left and right vertical frames, At least the upper frame has a metal frame material and a resin frame material that engages with the metal frame material, The resin frame material is arranged on the indoor side in the prospective direction relative to the resin frame material, A metal fitting having an attachment piece portion is attached to the metal frame material and is arranged between the resin frame material and the resin frame material in the projection direction, A thermally expandable fireproof material is attached to the mounting piece portion and is arranged on the indoor side of the metal frame material and the resin frame material in the projection direction. A fixture characterized by:

2. In the fitting according to claim 1, In the upper frame, the metal frame material has a metal engagement piece portion extending downward, and the resin frame material has a resin engagement portion that engages with the metal engagement piece portion, The metal fitting has an attachment piece portion attached to the metal engagement piece portion, and a connecting piece portion connecting the attachment piece portion and the mounting piece portion. A fixture characterized by:

3. In the fitting according to claim 2, The resin engaging portion is disposed between the mounting piece portion and the metal engaging piece portion. A fixture characterized by:

4. In the fitting according to any one of claims 1 to 3, The upper frame has an upper frame projection surface portion, The upper frame projection surface is provided with a frame-side thermal expansion fireproof material, at least a portion of which is arranged facing the metal frame material of the upper frame in the projection direction of the upper frame. A fixture characterized by:

5. In the fitting according to any one of claims 1 to 4, The upper frame has an upper frame projection surface portion, The upper frame has an upper frame projection surface portion that faces the upper frame projection surface portion at a distance in the projection direction of the upper frame, and an upper frame exterior projection surface portion that extends upward beyond the upper frame projection surface portion, The exterior surface of the upper frame is provided with a frame-side thermal expansion fireproof material. A fixture characterized by:

6. In the fitting according to any one of claims 1 to 5, The face material is composed of a double-glazed glass panel having wired glass and laminated glass, The laminated glass includes a pair of glass panes and an interlayer film disposed between the pair of glass panes. A fixture characterized by:

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