Fitting

Abstract

To provide a fitting having both heat insulating performance and fireproof performance.SOLUTION: A fitting to be installed in an opening of a building includes a frame member including a first metal frame, a second metal frame, and a resin member coupling the first metal frame and the second metal frame to each other, a metal covering member extending over an entire length of the frame member in a longitudinal direction and extending from the first metal frame to the second metal frame to cover the resin member, and a thermally expandable member provided on a surface of the covering member.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a building material having heat insulating properties and fire retardant properties. [Background technology]

[0002] For example, Patent Document 1 discloses a fire-resistant, insulating sash in which an outer frame body placed on the outside of the room and an inner frame body placed on the inside of the room are connected by a resin insulating member, and a thermally expandable member is attached to the surface of the insulating member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-158743 Summary of the Invention [Problem to be solved by the invention]

[0004] The configuration of Patent Document 1 may cause variations in the expansion of the thermal expansion member during a fire, which may result in insufficient flame-blocking performance depending on the location of the insulating member. In other words, insulating members made of resin, which melts easily in heat, melt quickly during a fire. Therefore, there is a concern that the direction and position of expansion of the thermal expansion member attached to the surface of the insulating member may not be able to be controlled as originally expected.

[0005] The present invention has been made in consideration of the above-mentioned problems of the conventional technology, and aims to provide a building material that combines heat insulation performance and fire prevention performance. [Means for solving the problem]

[0006] A fixture according to one embodiment of the present invention is a fixture to be installed in an opening of a building, and comprises a frame material having a metal frame on one side, a metal frame on the other side, and a resin material connecting the metal frame on one side and the metal frame on the other side, a metal covering material extending the entire longitudinal length of the frame material and extending from the metal frame on one side to the metal frame on the other side to cover the resin material, and a thermally expandable member provided on the surface of the covering material. [Effects of the Invention]

[0007] According to the above aspect of the present invention, it is possible to achieve both heat insulation performance and fire prevention performance. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a cross-sectional view of a fitting according to one embodiment. [Figure 2] FIG. 2 is a vertical cross-sectional view of the shoji screen portion of the fitting shown in FIG. [Figure 3] FIG. 2 is a vertical cross-sectional view of the fixture shown in FIG. 1 at a fixed window portion. [Figure 4] This is an enlarged cross-sectional view of one of the vertical frames and its surrounding area. [Figure 5] This is an enlarged cross-sectional view of the other vertical frame and its surrounding area. [Figure 6] This is an enlarged cross-sectional view of the mullion and its surrounding area. DETAILED DESCRIPTION OF THE INVENTION

[0009] BEST MODE FOR CARRYING OUT THE INVENTION A fitting according to a preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0010] As shown in Figures 1 to 3, a fitting 10 according to one embodiment of the present invention comprises an opening frame 12 fixed to an opening in a building skeleton, and a shoji screen 14 and a fixed window 16 supported on the inside of the opening frame 12. In this embodiment, the fitting 10 is an entrance door with a sleeve that is installed in an opening in a building skeleton.

[0011] First, the overall configuration of the fitting 10 will be described.

[0012] The opening frame 12 has an upper frame 20, a lower frame 21, left and right vertical frames 22, 23, and a mullion 24. The opening frame 12 is configured such that a rectangular opening is formed on the inside by framing the frames 20 to 23 all around, and this opening is divided into left and right halves by the mullion 24.

[0013] In this application, the "visible direction" refers to the indoor / outdoor direction of the fitting 10, that is, the direction from the indoor side to the outdoor side or the opposite direction (the direction indicated by arrow Z in the figure), and the "visible surface" refers to a surface extending along the visible direction. The "visible direction" refers to a direction perpendicular to the visible direction, and in the case of a vertical frame 22 or the like that is long in the vertical direction, it refers to the left-right direction (the direction indicated by arrow X in the figure) that is perpendicular to the longitudinal direction, and in the case of an upper frame 20 or the like that is long in the horizontal direction, it refers to the up-down direction (the direction indicated by arrow Y in the figure) that is perpendicular to the longitudinal direction. The "visible surface" refers to a surface along the visible direction. The "inside of the frame" refers to the inner peripheral portion of a frame-shaped member such as an opening frame 12. The "outside of the frame" refers to the outer peripheral portion of a frame-shaped member such as an opening frame 12.

[0014] The frames 20-23 and the mullions 24 are made of metal frames located on the outside and inside of the room that are insulated with resin material, a method known as shaped material insulation. The frames 20-23 and the mullions 24 also have a fire-resistant structure, which will be described later. This allows the door and window 10 to function as an insulated fire-resistant sash that combines thermal insulation and fire protection.

[0015] As shown in Fig. 1, the vertical frame 22 is a frame material that extends in the vertical direction. The vertical frame 22 is the vertical frame on the hanging side of the shoji screen 14. The vertical frame 22 has a metal frame (one-side metal frame) 22a on the outside of the room, a metal frame (the other-side metal frame) 22b on the inside of the room, and a resin material 22c that connects the metal frames 22a and 22b.

[0016] The metal frames 22a and 22b are extruded shapes of a metal material, such as an aluminum alloy. The other metal frames 20a, 20b, 21a, 21b, 23a, 23b, 24a, 24b, 54a, 54b, 72a, and 72b, which will be described later, can also be made of the same or similar material as the metal frames 22a and 22b. The resin material 22c is an extruded shape of a resin material. The other resin materials 20c, 21c, 23c, 24c, 54c, and 72c, which will be described later, can also be made of the same or similar material as the resin material 22c.

[0017] The metal frame 22a on the outdoor side has a shape in which multiple fins protrude from a generally rectangular portion having a hollow section. A hinge 104 for opening and closing the shoji screen 14 is screwed to the inner visible surface 26 of the metal frame 22a. A resin material 22c is connected to the inner end of the metal frame 22a on the indoor side of the visible surface 27. The metal frame 22b on the indoor side has a shape in which multiple fins protrude from a plate-like portion extending in the indoor-outdoor direction. The resin material 22c is connected to the outdoor end of the metal frame 22b. The resin material 22c extends over the entire length of the metal frames 22a, 22b in the longitudinal direction (Y direction). The inside of the frame of the resin material 22c is covered with a covering material 28, which will be described later.

[0018] The metal frames 22a, 22b are connected to each other by a connecting bracket 30. The connecting bracket 30 extends the entire length of the vertical frame 22. The connecting bracket 30 is a sheet metal part made of, for example, stainless steel or steel, and the connecting bracket 46, described below, can be made of the same or a similar material. The connecting bracket 30 is provided on the opposite side of the resin material 22c from the covering material 28, i.e., on the outside of the vertical frame 22. The outside end of the connecting bracket 30 is screwed to the visible surface 27 of the metal frame 22a. The inside end of the connecting bracket 30 engages with a fin protruding from the inside end of the metal frame 22b to the outside of the frame. The inside end of the connecting bracket 30 is further fastened to a fastener 31, such as a screw or nail, that secures the vertical frame 22 to the building frame.

[0019] A support member 34 is attached to the metal frame 22b on the indoor side, at a position closer to the indoor side of the frame's inner visible surface 32. The support member 34 is an extruded profile made of a resin material such as polyvinyl chloride (PVC). The other support members 52, 70, and 94 described below can also be made of the same or similar material as the support member 34. The support member 34 is a member that covers the surface of the metal frame 22b that is exposed to the indoor side, thereby improving the thermal insulation performance of the vertical frame 22. A waterproofing material 35 is attached to the surface of the support member 34 that faces the indoor side surface 14a of the shoji screen 14. This allows the support member 34 to function as a door stop for the shoji screen 14 when it is in the fully closed position. The waterproofing material 35 is an airtight and watertight material that adheres to the indoor side surface 14a of the shoji screen 14 when it is in the fully closed position, ensuring airtightness and watertightness from indoor to outdoor directions.

[0020] The vertical frame 22 is a composite frame material in which the surface of the metal frame 22b on the indoor side that is exposed to the indoor side is covered with a resin support member 34. The other frames 20, 21, 23 and the mullion 24 are also made of composite frame materials similar to the vertical frame 22.

[0021] 1, the vertical frame 23 is a frame material that extends in the vertical direction. The vertical frame 23 is the vertical frame of the fixed window 16. The vertical frame 23 has a metal frame (one-side metal frame) 23a on the outside of the room, a metal frame (the other-side metal frame) 23b on the inside of the room, and a resin material 23c that connects the metal frames 23a and 23b.

[0022] The metal frame 23a on the outdoor side has a shape in which multiple fins protrude from a generally rectangular portion having a hollow section. The metal frame 23b on the indoor side has a shape in which multiple fins protrude from a plate-like portion extending in the indoor-outdoor direction. The resin material 23c connects the inner end of the indoor-side visible surface 33 of the metal frame 23a to the outdoor end of the metal frame 23b. The resin material 23c extends over the entire length of the metal frames 23a, 23b in the longitudinal direction (Y direction). The inner side of the resin material 23c is covered with a covering material 36, which will be described later.

[0023] An opening groove 38 is formed on the inside of the vertical frame 23 to hold the side edge of the panel 106 of the fixed window 16. The opening groove 38 is provided across the resin material 23c and the inner projection surfaces 39, 40 of the metal frames 23a, 23b. The opening groove 38 is formed between a protruding piece 41 protruding from the projection surface 39 toward the inside of the frame and a rib 42 attached to the projection surface 40. The rib 42 is an extruded profile made of a resin material such as polyvinyl chloride (PVC). The other ribs 64, 81, and 98 described below can also be made of the same or similar material as the rib 42. The rib 42 is a member that supports the indoor-side surface 106c of the panel 106. The rib 42 also improves the thermal insulation performance of the vertical frame 23 by covering the surface of the metal frame 23b exposed to the indoor side.

[0024] The metal frames 23a, 23b are connected to each other by a connecting fitting 46. The connecting fitting 46 extends the entire length of the vertical frame 23. The connecting fitting 46 is provided on the opposite side of the resin material 23c from the covering material 44, i.e., on the outside of the vertical frame 23. The outside end of the connecting fitting 46 is screwed to the visible surface 33 of the metal frame 23a. The inside end of the connecting fitting 46 engages with a fin that protrudes from the inside end of the metal frame 23b to the outside of the frame. The inside end of the connecting fitting 46 is further fastened together with a fastener 31 that secures the vertical frame 23 to the building frame.

[0025] 2 and 3, the upper frame 20 is a frame material extending in the left-right direction and connects the upper ends of the vertical frames 22, 23. The upper frame 20 has a metal frame (one-side metal frame) 20a on the outdoor side, a metal frame (the other-side metal frame) 20b on the indoor side, and a resin material 20c connecting the metal frames 20a, 20b.

[0026] The metal frame 20a on the outdoor side has a shape with multiple fins protruding from a roughly rectangular portion with a hollow section. The metal frame 20b on the indoor side has a shape with multiple fins protruding from a plate-like portion extending in the indoor-outdoor direction. The resin material 20c connects the inner end of the metal frame 20a on the indoor side facing surface with the outer end of the metal frame 20b. The resin material 20c extends over the entire length of the metal frames 20a, 20b in the longitudinal direction (X direction). The inner side of the resin material 20c is covered with a covering material 48, which will be described later.

[0027] As shown in FIG. 2, the upper frame 20 has a shoji placement section 49 located on the inside of the frame, near the vertical frame 22. The shoji placement section 49 holds the upper edge of the shoji screen 14 when it is in the fully closed position. The shoji placement section 49 is provided across the resin material 20c and extends to the inner frame surfaces 50, 51 of the metal frames 20a, 20b. A receiving member 52 is provided on the indoor side of the shoji placement section 49. The receiving member 52 is attached to the metal frame 20b so as to cover the inner surface 51 of the metal frame 20b. The receiving member 52 is a member that covers the surface of the metal frame 20b that is exposed to the indoor side, thereby improving the thermal insulation performance of the upper frame 20. A weatherstripping material 35 is attached to the surface of the receiving member 52 facing the indoor surface 14a of the shoji screen 14, so that the receiving member 52 also functions as a door stop for the shoji screen 14 when it is in the fully closed position.

[0028] As shown in Figure 3, an upper window frame 54 is attached to the upper frame 20 at a position on the inside of the frame near the vertical frame 23. The upper window frame 54 is a frame material extending in the left-right direction. The upper window frame 54 has a metal frame (one-side metal frame) 54a on the outside of the room, a metal frame (the other-side metal frame) 54b on the inside of the room, and a resin material 54c connecting the metal frames 54a and 54b.

[0029] The metal frame 54a on the exterior side is attached to the visible surface 50 of the metal frame 20a. The metal frame 54b on the interior side is attached to the inside frame of the receiving member 52. The resin material 54c connects the inside frame end of the visible surface on the interior side of the metal frame 54a to the outside frame end of the visible surface on the exterior side of the metal frame 54b. The resin material 54c extends over the entire length of the metal frames 54a, 54b in the longitudinal direction (X direction). The inside frame side of the resin material 54c is covered with a covering material 56, which will be described later.

[0030] An opening groove 58 is formed on the inside of the upper frame 20 to hold the upper edge of the panel 106 of the fixed window 16. The opening groove 58 is provided across the resin material 54c and the inner visible surfaces 60, 61 of the metal frames 54a, 54b. The opening groove 58 is formed between a protruding piece 62 that protrudes from the inner visible surface 60 of the metal frame 54a toward the frame interior, and a ledge 64 attached to the inner surface of the metal frame 54b. The ledge 64 is a member that supports the indoor-side surface 106c of the panel 106. The ledge 64 is also a member that improves the insulating performance of the upper frame 20 by covering the surface of the metal frame 54b that is exposed to the indoor side.

[0031] 2 and 3, the lower frame 21 is a frame material extending in the left-right direction and connects the lower ends of the vertical frames 22, 23. The lower frame 21 has a metal frame (one-side metal frame) 21a on the outdoor side, a metal frame (the other-side metal frame) 21b on the indoor side, and a resin material 21c connecting the metal frames 21a, 21b.

[0032] The metal frames 21a, 21b are generally rectangular with a hollow portion, and have multiple fins protruding from them. The resin material 21c connects the inner end of the metal frame 21a on the indoor-facing surface with the outer end of the metal frame 21b. The resin material 21c extends over the entire length of the metal frames 21a, 21b in the longitudinal direction (X direction). The inner side of the resin material 21c is covered with a covering material 66, which will be described later.

[0033] As shown in FIG. 2, the bottom frame 21 has a shoji placement section 67 located on the inside of the frame, near the vertical frame 22. The shoji placement section 67 holds the lower edge of the shoji screen 14 when it is in the fully closed position. The shoji placement section 67 is provided across the resin material 21c and extends to the inner visible surfaces 68, 69 of the metal frames 21a, 21b. A receiving member 70 is provided on the indoor side of the shoji placement section 67. The receiving member 70 is attached to the metal frame 21b so as to cover the inner visible surface of the metal frame 21b. The receiving member 70 is a member that improves the thermal insulation performance of the bottom frame 21 by covering the surface of the metal frame 21b that is exposed to the indoor side. A weatherstripping material 35 is attached to the surface of the receiving member 70 facing the indoor surface 14a of the shoji screen 14, so that the receiving member 70 also functions as a door stop for the shoji screen 14 when it is in the fully closed position.

[0034] As shown in Figure 3, a lower window frame 72 is attached to the lower frame 21 at a position on the inside of the frame near the vertical frame 23. The lower window frame 72 is a frame material extending in the left-right direction. The lower window frame 72 has a metal frame (one-side metal frame) 72a on the outside of the room, a metal frame (the other-side metal frame) 72b on the inside of the room, and a resin material 72c connecting the metal frames 72a and 72b.

[0035] The metal frame 72a on the exterior side is attached to the visible surface 68 of the metal frame 21a. The metal frame 72b on the interior side is attached to the metal frame 21b and the receiving member 70. The resin material 72c connects the inner end of the frame on the interior side visible surface of the metal frame 72a to the outer end of the frame on the exterior side visible surface of the metal frame 72b. The resin material 72c extends over the entire length of the metal frames 72a, 72b in the longitudinal direction (X direction). The inner side of the frame of the resin material 72c is covered with a covering material 74, which will be described later.

[0036] An opening groove 76 is formed on the inside of the bottom frame 21 to hold the lower edge of the panel 106 of the fixed window 16. The opening groove 76 is provided across the resin material 72c and extends to the inner visible surfaces 77, 78 of the metal frames 72a, 72b. The opening groove 76 is formed between a protruding piece 80 that protrudes from the inner visible surface 77 of the metal frame 72a toward the frame interior, and a ledge 81 attached to the inner surface of the metal frame 72b. The ledge 81 is a member that supports the indoor-side surface 106c of the panel 106. The ledge 81 is also a member that improves the insulating performance of the bottom frame 21 by covering the surface of the metal frame 72b that is exposed to the indoor side.

[0037] As shown in Figure 1, the mullion 24 is a frame material that extends vertically between the left and right vertical frames 22, 23, and stands upright between the upper frame 20 and the lower frame 21. The mullion 24 functions as the vertical frame on the door edge side of the shoji screen 14, and also functions as one of the vertical frames of the fixed window 16. The mullion 24 has a metal frame (one-side metal frame) 24a on the outside of the room, a metal frame (the other-side metal frame) 24b on the inside of the room, and a pair of left and right resin members 24c, 24c that connect the metal frames 24a, 24b.

[0038] The metal frames 24a, 24b have a shape with a plurality of fins protruding from a generally rectangular portion having a hollow portion. The resin material 24c connects the visible surface 84 on the indoor side of the metal frame 24a to the visible surface 85 on the outdoor side of the metal frame 24b. The resin material 24c extends over the entire length of the metal frames 24a, 24b in the longitudinal direction (Y direction). The inside of the frame of the resin material 24c on the shoji 14 side is covered with a covering material 86, which will be described later. Reinforcing materials 88 made of stainless steel or steel sheet metal are appropriately provided within the hollow portions of the metal frames 24a, 24b. Reinforcing materials 88 are also provided between the visible surfaces 84, 85.

[0039] The mullion 24 has a shoji positioning portion 90 on its side facing the shoji screen 14. The shoji positioning portion 90 holds the leading edge of the shoji screen 14 when it is in the fully closed position. The shoji positioning portion 90 is provided across the resin material 24c and extends to the visible surfaces 91 and 92 of the metal frames 24a and 24b. A support member 94 is provided on the interior side of the shoji positioning portion 90. The support member 94 is attached to the metal frame 24b so as to cover from the visible surface 92 of the metal frame 24b to the visible surface 95 on the interior side. The support member 94 is a member that improves the insulating performance of the mullion 24 by covering the surface of the metal frame 24b that is exposed to the interior side. A weatherstripping material 35 is attached to the surface of the support member 94 facing the interior surface 14a of the shoji screen 14, so that it also functions as a door stop for the shoji screen 14 when it is in the fully closed position.

[0040] The mullion 24 has an opening groove 96 on its side facing the fixed window 16. The opening groove 96 holds the side edge of the panel body 106 of the fixed window 16. The opening groove 96 is provided across the inner visible surfaces of the metal frames 24a, 24b, spanning the resin material 24c. The opening groove 96 is formed between a protruding piece 97 that protrudes from the visible surface of the metal frame 24a toward the inside of the frame, and a ledge 98 that is attached to the receiving member 94 so as to cover the visible surface of the metal frame 24b. The ledge 98 is a member that supports the indoor-side surface 106c of the panel body 106. The ledge 98 is also a member that improves the insulating performance of the mullion 24 by covering the surface of the metal frame 24b that is exposed to the indoor side.

[0041] As shown in FIGS. 1 and 2, the shoji screen 14 is a frame door that includes a panel body 100, and frames 102a to 102d and ledges 103a to 103d that surround the panel body 100 on all four sides.

[0042] The panel body 100 is, for example, a double-glazed glass having a pair of glass sheets 100a, 100b facing each other with a spacer sandwiched between them. The panel body 100 may be a single-layer structure or a three- or more-layer structure.

[0043] The frames 102a to 102d are extruded shapes made of a metal material such as aluminum alloy. The flanges 103a to 103d are extruded shapes made of a resin material such as polyvinyl chloride (PVC). The upper frame 102a holds the upper edge of the panel body 100 between itself and flange 103a. The lower frame 102b holds the lower edge of the panel body 100 between itself and flange 103b. The vertical frames 102c, 102c hold the side edges of the panel body 100 between themselves and flanges 103c, 103d, respectively.

[0044] The shoji screen 14 is rotatably connected between the visible surface of the vertical frame 102c on the hanging side and the visible surface 26 of the vertical frame 22 on the hanging side using a hinge 104. The shoji screen 14 can be opened and closed from the fully closed position shown in Figures 1 and 2 so that the vertical frame 102d on the door tip side moves to the outside of the room. In the fully closed position shown in Figures 1 and 2, the indoor surface 14a of the shoji screen 14 is supported by receiving members 34, 52, 70, 94 and the tension material 35 attached thereto.

[0045] As shown in Figures 1 and 3, the fixed window 16 is configured such that the four peripheral edges of the panel body 106 are held in place by four peripheral opening grooves 38, 58, 76, and 96. In other words, the fixed window 16 is configured such that the panel body 106 is held in place by an opening frame formed by the upper window frame 54, lower window frame 72, mullions 24, and vertical frames 23. The panel body 100 is, for example, a two-layer double-glazed glass panel having a pair of glass panes 106a, 106b facing each other with a spacer sandwiched between them. The panel body 106 may be a single-layered panel, or may have a three- or more-layered structure.

[0046] Next, the fireproof structure of the fitting 10 will be explained.

[0047] As shown in FIG. 4, the fireproof structure of the vertical frame 23 that constitutes one of the vertical frames of the fixed window 16 can have a covering material 36 and thermally expandable members 110 and 111.

[0048] The covering material 36 is a metal plate made of stainless steel, steel, or the like, and extends the entire length of the vertical frame 23 in the longitudinal direction (Y direction). The covering material 36 extends from the metal frame 23a on the indoor side to the metal frame 23b on the indoor side, covering the resin material 23c from the inside of the frame. The covering material 36 is an L-shaped member having a first plate portion 36a and a second plate portion 36b.

[0049] The first plate portion 36a extends from the metal frame 23a to the metal frame 23b and covers the resin material 23c. The outdoor end of the first plate portion 36a is fixed to the visible surface 39 of the metal frame 23a with screws 114. The indoor end of the first plate portion 36a extends across the resin material 23c to a position where it abuts or is close to the visible surface 40 of the metal frame 23b. This allows the first plate portion 36a to function as a bridge spanning the visible surfaces 39, 40, and the outer frame surface abuts or is close to the inner frame surface 116 of the resin material 23c.

[0050] The second plate portion 36b is bent from the indoor-side end of the first plate portion 36a toward the inside of the frame and is provided so as to protrude from the visible surface 40. The second plate portion 36b has a shorter side than the first plate portion 36a. The second plate portion 36b is disposed between the ridge 42 and the indoor-side surface 106c of the panel body 106 in the indoor / outdoor direction.

[0051] The first plate portion 36a of the covering material 36 covers and conceals the resin material 23c from the inside of the frame. As a result, when the fitting 10 is exposed to flames or heat such as a fire, the covering material 36 seals the area where the resin material 23c was located, even if the resin material 23c melts or burns away quickly. The covering material 36 prevents the area where the resin material 23c was located from becoming a through hole extending in the direction of the frame, thereby preventing flames and smoke from passing through to the building frame. In particular, because the covering material 36 is in close contact with the surface 116 of the resin material 23c, there is no gap between the covering material 36 and the resin material 23c, which prevents the resin material 23c from melting or burning away.

[0052] The second plate portion 36b of the covering material 36 is interposed between the batten 42 and the panel body 106. This allows the covering material 36 to support the indoor-side surface 106c of the panel body 106 when the fitting 10 is exposed to flames or heat such as a fire and the resin batten 42 melts or burns away early. The covering material 36 can prevent the panel body 106 from falling off in the event of a fire, etc., and forming a through hole extending in the indoor / outdoor directions.

[0053] The thermal expansion members 110 and 111 are non-flammable or flame-retardant members that expand when heated, such as a thermal expansion foam material containing graphite. Thermal expansion members 118, 120, 126, 128, 129, 136, 140 to 143, which will be described later, can also be made of the same or similar material as the thermal expansion members 110 and 111.

[0054] The thermal expansion member 110 is attached to the surface of the second plate portion 36b facing the panel body 106 (outside the room). This causes the thermal expansion member 110 to expand toward the panel body 106 when the fitting 10 is exposed to flames or heat such as in a fire. The expanded thermal expansion member 110 holds the indoor-side surface 106c of the panel body 106, preventing the panel body 106 from falling off. The expanded thermal expansion member 110 also seals the gap between the side end face of the panel body 106 and the visible faces 39, 40, preventing this portion from becoming a through hole extending in the indoor / outdoor directions.

[0055] The thermal expansion member 111 is attached to the surface of the first plate portion 36a facing the side end face of the panel body 106. As a result, the thermal expansion member 111 closes the gap between the side end face of the panel body 106 and the visible faces 39, 40 in the event of a fire, etc., and prevents this portion from becoming a through hole extending in the indoor / outdoor directions.

[0056] As shown in FIG. 4, the fireproof structure of the vertical frame 23 can have a connecting metal fitting 46 and a thermally expandable member 118.

[0057] The connecting fittings 46 cover and conceal the resin material 23c from the outside of the frame. As described above, the connecting fittings 46 extend the entire length of the vertical frame 23. This prevents the portions where the resin material 23c is located from becoming through holes extending in the inside and outside of the frame in the event of a fire, etc., and can suppress the passage of flames and smoke to the building skeleton.

[0058] The thermal expansion member 118 is attached to the surface of the connecting fitting 46 facing the resin material 23c. The thermal expansion member 118 is located opposite the surface 117 of the resin material 23c on the outer side of the frame. The thermal expansion member 118 expands toward the resin material 23c in the event of a fire, etc. This allows the thermal expansion member 118 to close the gap where the resin material 23c is located, preventing flames and smoke from passing through to the building frame.

[0059] As shown in FIG. 5, the fireproof structure of the vertical frame 22 that constitutes one of the vertical frames of the shoji screen 14 can have a covering material 28 and a thermally expandable member 120.

[0060] The covering material 28 is a metal plate made of stainless steel, steel, or the like, and extends the entire length of the vertical frame 22 in the longitudinal direction (Y direction). The covering material 28 extends from the metal frame 22a on the indoor side to the metal frame 22b on the indoor side, covering the resin material 22c from the inside of the frame. The outdoor end of the covering material 28 is fixed to the visible surface 26 of the metal frame 22a with screws 122. The indoor end of the covering material 28 extends across the resin material 22c to a position where it abuts or is close to the visible surface 32 of the metal frame 22b. This allows the covering material 28 to function as a bridge spanning the visible surfaces 26, 32, with its frame outer surface abutting or being close to the frame inner surface 123 of the resin material 22c.

[0061] The covering material 28 covers and conceals the resin material 22c from the inside of the frame. As a result, when the fitting 10 is exposed to flames or heat such as a fire, the covering material 28 seals the area where the resin material 22c was located, even if the resin material 22c melts or burns away quickly. The covering material 28 prevents the area where the resin material 22c is located from forming a through hole extending in the inside and outside of the frame, thereby preventing flames and smoke from passing through to the building frame. In particular, because the covering material 28 is in close contact with the surface 123 of the resin material 22c, there is no gap between the covering material 28 and the resin material 22c, which prevents the resin material 22c from melting or burning away.

[0062] The thermally expandable member 120 is attached to the inner frame surface of the covering material 28. This causes the thermally expandable member 120 to expand toward the shoji screen 14 when the fitting 10 is exposed to flames or heat from a fire or the like. The expanded thermally expandable member 120 closes the gap between the side end face of the shoji screen 14 and the visible surface 26, preventing this area from becoming a through hole extending in the indoor / outdoor directions.

[0063] The thermal expansion member 120 can be positioned so as to overlap the resin material 22c in the thickness direction of the covering material 28. This allows the thermal expansion member 120 to suppress a temperature rise in the resin material 22c in the event of a fire or the like, and to suppress melting or burning of the resin material 22c.

[0064] As shown in FIG. 5, the fireproof structure of the vertical frame 22 can include a connecting fitting 30 and a thermally expandable member 126.

[0065] The connecting fittings 30 cover and conceal the resin material 22c from the outside of the frame. As described above, the connecting fittings 30 extend the entire length of the vertical frame 22. This prevents the resin material 22c from forming a through hole extending in the inside and outside of the frame in the event of a fire, etc., and can suppress the passage of flames and smoke to the building skeleton.

[0066] The thermal expansion member 126 is attached to the surface of the connecting fitting 30 facing the resin material 22c. The thermal expansion member 126 is located opposite the surface 124 of the resin material 22c on the outer side of the frame. The thermal expansion member 126 expands toward the resin material 22c in the event of a fire, etc. This allows the thermal expansion member 126 to block gaps in the area where the resin material 22c is located, preventing flames and smoke from passing through to the building frame.

[0067] As shown in FIG. 6, the fireproof structure of the mullion 24 that constitutes the other vertical frame of the shoji screen 14 can have a covering material 86 and thermally expandable members 128 and 129.

[0068] The covering material 86 is a metal plate made of stainless steel, steel, or the like, and extends the entire length of the vertical frame 24 in the longitudinal direction (Y direction). The covering material 86 extends from the metal frame 24a on the indoor side to the metal frame 24b on the indoor side, covering the resin material 24c from the inside of the frame. The covering material 86 is an L-shaped member having a first plate portion 86a and a second plate portion 86b.

[0069] The first plate portion 86a extends from the metal frame 24a to the metal frame 24b and covers the resin material 24c. The outdoor end of the first plate portion 86a is fixed to the visible surface 91 of the metal frame 24a with screws 130. The indoor end of the first plate portion 86a extends across the resin material 24c to a position where it abuts against the visible surface 92 of the metal frame 24b. This allows the first plate portion 86a to function as a bridge spanning the visible surfaces 91, 92, and the outer frame surface of the first plate portion 86a abuts or is close to the inner frame surface 132 of the resin material 24c.

[0070] The second plate portion 86b is bent from the indoor end of the first plate portion 86a toward the inside of the frame and is provided so as to protrude from the visible surface 92. The second plate portion 86b has a shorter side than the first plate portion 86a. The second plate portion 86b is disposed between the receiving member 94 and the indoor surface 14a of the shoji screen 14 in the indoor / outdoor direction.

[0071] The first plate portion 86a of the covering material 86 covers and conceals the resin material 24c from the inside of the frame. As a result, the covering material 86 seals the area where the resin material 24c was located, even if the resin material 24c melts or burns away quickly when the fitting 10 is exposed to flames or heat, such as a fire. The covering material 86 prevents the area where the resin material 24c was located from becoming a through hole in the mullion 24 from the inside to the outside. As a result, the covering material 86 can prevent the strength of the mullion 24 from decreasing due to heat, such as during a fire, causing warping and deformation, which could widen the gap between the mullion 24 and the shoji screen 14, or reduce the flame-blocking performance of the mullion 24 itself. The second plate portion 86b of the covering material 86 is interposed between the support member 94 and the shoji screen 14. As a result, the covering material 86 can support the indoor surface 14a of the shoji screen 14, even if the resin support member 94 melts or burns away quickly when the fitting 10 is exposed to flames or heat, such as a fire. This allows the covering material 86 to prevent the leading edge of the shoji screen 14 from tilting in the event of a fire, etc., and to prevent a through hole from being formed in the indoor / outdoor directions.

[0072] The thermally expandable member 128 is attached to the surface of the second plate portion 86b facing the shoji screen 14 (outside the room). This causes the thermally expandable member 128 to expand towards the shoji screen 14 when the fitting 10 is exposed to flames or heat such as in a fire. The expanded thermally expandable member 128 holds the indoor-side surface 14a of the shoji screen 14, preventing the shoji screen 14 from tilting. The expanded thermally expandable member 128 also closes the gap between the leading edge of the shoji screen 14 and the front faces 91, 92, preventing this portion from becoming a through hole extending in the indoor / outdoor directions.

[0073] The thermal expansion member 129 is attached to the surface of the first plate portion 86a facing the leading edge of the shoji screen 14. As a result, the thermal expansion member 129 closes the gap between the leading edge of the shoji screen 14 and the visible surfaces 91, 92 in the event of a fire, etc., and prevents this portion from becoming a through hole extending in the indoor / outdoor directions.

[0074] As shown in FIG. 6, the fireproof structure of the mullion 24 that constitutes the other side of the vertical frame of the fixed window 16 can have a metal fitting 134 and a thermally expandable member 136.

[0075] The metal fittings 134 are, for example, stainless steel or other sheet metal bent into a roughly M shape, and extend the entire length of the mullion 24 in the longitudinal direction (Y direction). The indoor-side end of the metal fittings 134 is screwed to the visible surface of the metal frame 24a. The outdoor-side end of the metal fittings 134 is positioned between the batten 98 and the indoor-side surface 106c of the panel body 106. As a result, when the fitting 10 is exposed to flames or heat from a fire, etc., the metal fittings 134 can support the indoor-side surface 106c of the panel body 106 and prevent it from falling off, even if the resin batten 98 melts or burns away early.

[0076] The thermal expansion member 136 is affixed to the surface of the outdoor end of the metal fitting 134 facing the indoor surface 106c of the panel body 106. This causes the thermal expansion member 136 to expand toward the panel body 106 when the fitting 10 is exposed to flames or heat from a fire or the like. The expanded thermal expansion member 136 holds the indoor surface 106c of the panel body 106 in place, preventing the panel body 106 from falling off. The expanded thermal expansion member 136 also seals the gap between the side end face of the panel body 106 and the visible surface of the mullion 24, preventing this area from becoming a through hole in the indoor / outdoor directions.

[0077] As shown in Figure 2, the fireproof structure of the upper frame 20 can have a covering material 48 and a thermal expansion member 140 attached to its surface. The covering material 48 and the thermal expansion member 140 can exhibit fireproof performance similar to that of the covering material 28 and the thermal expansion member 120 shown in Figure 5 above, and detailed explanations will be omitted. As shown in Figure 3, the fireproof structure on the fixed window 16 side of the upper frame 20 can have covering materials 48, 56 and thermal expansion members 140, 141 attached to their surfaces. The covering material 56 and the thermal expansion member 141 can exhibit fireproof performance similar to that of the covering material 28 and the thermal expansion member 120 shown in Figure 5 above, and detailed explanations will be omitted.

[0078] As shown in Figure 2, the fireproof structure of the sill 21 can have a covering material 66 and a thermal expansion member 142 attached to its surface. The covering material 66 and the thermal expansion member 142 can exhibit fireproof performance similar to that of the covering material 28 and the thermal expansion member 120 shown in Figure 5 above, and detailed description thereof will be omitted. As shown in Figure 3, the fireproof structure on the fixed window 16 side of the sill 21 can have covering materials 66, 74 and thermal expansion members 142, 143 attached to their surfaces. The covering material 74 and the thermal expansion member 143 can exhibit fireproof performance similar to that of the covering material 36 and the thermal expansion member 110 shown in Figure 4 above, and detailed description thereof will be omitted.

[0079] As described above, one aspect of the present invention provides a fixture for installation in an opening in a building, comprising a frame member having a first metal frame, a second metal frame, and a resin material connecting the first metal frame and the second metal frame; a metal covering member extending the entire longitudinal length of the frame member and extending from the first metal frame to the second metal frame to cover the resin material; and a thermal expansion member provided on the surface of the covering member. This configuration enhances the insulating performance of the metal frame by using the resin material. Furthermore, even if the resin material melts or burns away during a fire or other event, the metal covering member covering the resin material prevents the resin material from becoming a penetration hole for flames or smoke. Furthermore, during a fire or other event, the thermal expansion member expands on the surface of the covering member, sealing any gaps around the resin material, further improving fire resistance.

[0080] The panel body may be held by the frame material, the frame material extending from the one-side metal frame to the other-side metal frame across the resin material and having an opening groove for holding an edge of the panel body, the opening groove being formed between a protruding piece protruding from a visible surface of the one-side metal frame and a ledge attached to the other-side metal frame, and the covering material may have a first plate portion extending from the one-side metal frame to the other-side metal frame and covering the resin material, and a second plate portion bent from the first plate portion and protruding from the visible surface of the other-side metal frame and positioned between the ledge and the panel body. In this way, even if the ledge is deformed or falls off due to heat such as during a fire, the second plate portion of the covering material can hold the panel body and prevent it from falling off.

[0081] The battens may be made of resin, which further improves the insulating performance of the fixture. Furthermore, although resin battens tend to burn quickly in the event of a fire, the burned-out portion can be quickly replaced with a covering material and a thermally expandable member.

[0082] The frame may include a shoji screen held by the frame material, the frame material extending from the one-side metal frame to the other-side metal frame across the resin material and having a shoji screen positioning portion for holding the edge of the shoji screen, the shoji screen positioning portion having a receiving member attached to the visible surface of the other-side metal frame and facing the interior surface of the shoji screen, and the covering material may have a first plate portion extending from the one-side metal frame to the other-side metal frame and covering the resin material, and a second plate portion bent from the first plate portion and protruding from the visible surface of the other-side metal frame and positioned between the receiving member and the shoji screen. In this way, even if the receiving member is deformed or falls off due to heat such as during a fire, the second plate portion of the covering material can hold the shoji screen and prevent it from falling off or tilting.

[0083] The thermal expansion member may be provided on at least one of the surfaces of the first plate portion and the second plate portion. In this case, the thermal expansion member expands toward the panel body or the shoji screen during a fire or other event. The expanded thermal expansion member thereby holds the panel body or the shoji screen more firmly and also seals the gap between the panel body or the shoji screen and the frame material, preventing these areas from becoming holes through which flames or smoke can pass.

[0084] The opening frame may include an opening frame having at least an upper frame, a lower frame, and left and right vertical frames, at least one of the left and right vertical frames being made of the frame material, and the covering material being disposed inside the frame material. In this way, the covering material and the thermal expansion member can prevent the formation of through holes for flames and smoke around the opening frame in the event of a fire, etc.

[0085] The structure may further include a connecting metal fitting provided on the outer side of the frame material, opposite the covering material with respect to the resin material, connecting the one-side metal frame and the other-side metal frame, the connecting metal fitting extending the entire length of the frame material in the longitudinal direction, and the thermal expansion member provided on at least the surface of the connecting metal fitting facing the resin material side. In this way, the connecting metal fitting and the thermal expansion member can prevent the portion where the resin material is present from becoming a through hole extending inward and outward of the frame in the event of a fire, etc.

[0086] The opening frame may include an upper frame, a lower frame, left and right vertical frames, and a mullion standing between the upper and lower frames, the mullion being made of the frame material, and the covering material being disposed on the side of the mullion facing at least one of the left and right vertical frames. In this way, even in a building fixture having a mullion, it is possible to ensure the insulation performance and fire prevention performance of the mullion and its surrounding area.

[0087] The thermal expansion member may be configured to overlap the resin material in the thickness direction of the covering material, thereby suppressing a temperature rise in the resin material in the event of a fire or the like, and preventing the resin material from melting or burning down.

[0088] It should be noted that the present invention is not limited to the above-described embodiment, and can be freely modified without departing from the spirit of the present invention.

[0089] In the above embodiment, a single-swing casement window was used as an example of a front door fixture, but the fixture may be any door or window with double sleeves, or any window type other than a sleeve that does not have a mullion. The shoji screen 14 may be a sliding door, and the fixed window 16 may be a casement window or a sliding window, etc. [Explanation of symbols]

[0090] 10 Doors and windows, 12 Opening frames, 14 Shoji screens, 16 FIX windows, 20 Upper frames, 20a, 20b, 21a, 21b, 22a, 22b, 23a, 23b, 24a, 24b, 54a, 54b, 72a, 72b Metal frames, 20c, 21c, 22c, 23c, 24c, 54c, 72c Resin materials, 21 Lower frames, 22, 23 Vertical frames, 24 Mullions, 28, 36, 48, 56, 66, 74, 86 Covering materials, 30, 46 Connecting hardware, 34, 52, 70, 94 Support members, 42, 64, 81, 98, 103a to 103d Battering edges, 54 Upper window frames, 72 Lower window frames, 106 Panel body, 110, 111, 118, 120, 126, 128, 129, 136, 140-143 Thermal expansion member

Claims

1. A fixture installed at an opening in a building, a frame material including a first metal frame, a second metal frame, and a resin material connecting the first metal frame and the second metal frame; a metal covering material that extends over the entire length of the frame material in the longitudinal direction and extends from the one-side metal frame to the other-side metal frame to cover the resin material; a thermal expansion member provided on the surface of the covering material; A fixture characterized by comprising:

2. The fitting according to claim 1, A panel body is provided which is held by the frame material, the frame material is provided across the resin material from the one-side metal frame to the other-side metal frame, and has an open groove that holds an edge portion of the panel body; The opening groove is formed between a protruding piece protruding from the visible surface of the one-side metal frame and a pressing edge attached to the other-side metal frame, The covering material is a first plate portion extending from the one-side metal frame to the other-side metal frame and covering the resin material; a second plate portion bent from the first plate portion and protruding from the visible surface of the other side metal frame, and disposed between the pressing edge and the panel body; have A fixture characterized by:

3. The fitting according to claim 2, The ledge is made of resin. A fixture characterized by:

4. The fitting according to claim 1, A shoji screen is provided which is held by the frame material, The frame material is provided across the resin material from the one side metal frame to the other side metal frame, and has a shoji arrangement portion that holds the edge of the shoji, The shoji arrangement portion is attached to the visible surface of the other side metal frame and has a receiving member facing the indoor surface of the shoji, The covering material is a first plate portion extending from the one-side metal frame to the other-side metal frame and covering the resin material; A second plate portion bent from the first plate portion and protruding from the visible surface of the other side metal frame and disposed between the receiving member and the shoji screen; have A fixture characterized by:

5. The fitting according to claim 2 or 4, The thermal expansion member is provided on at least one of the surfaces of the first plate portion and the second plate portion. A fixture characterized by:

6. The fitting according to claim 1, The opening frame has at least an upper frame, a lower frame, and left and right vertical frames; At least one of the left and right vertical frames is made of the frame material, The covering material is disposed inside the frame material. A fixture characterized by:

7. The fitting according to claim 6, a connecting metal fitting provided on the outer side of the frame material, on the opposite side of the resin material from the covering material, for connecting the one-side metal frame and the other-side metal frame; The connecting fitting extends over the entire length of the frame material in the longitudinal direction, The thermal expansion member is provided at least on the surface of the connecting fitting facing the resin material side. A fixture characterized by:

8. The fitting according to claim 1, An opening frame having an upper frame, a lower frame, left and right vertical frames, and a mullion standing between the upper frame and the lower frame and between the left and right vertical frames, The mullion is made up of the frame material, The covering material is disposed on a side surface of the mullion facing at least one of the left and right vertical frames. A fixture characterized by:

9. The fitting according to claim 1, The thermal expansion member is positioned so as to overlap the resin material in the thickness direction of the covering material. A fixture characterized by:

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