Building materials

Abstract

To provide a fixture capable of improving thermal insulation properties and fire resistance.SOLUTION: A fixture has a door panel 20 supported so as to be opened and closed with respect to a frame body 10. The frame body 10 has a metal frame portion 13M facing a depth face of the door panel 20 and a resin frame portion 13P provided to protrude inward from the metal frame portion 13M. A tight material attachment part 13P3 is provided on the front face of the resin frame part 13P. A frame-side tight material AT3 for the door panel 20 is attached to the tight material mounting portion 13P3, and a thermally expandable member EX4 is provided between itself and the frame-side tight material AT3.SELECTED DRAWING: Figure 8

Description

[Technical Field]

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

[0002] In some building materials, the doorstop located on the interior side of the frame is made of resin, and a thermal expansion material is attached to the visible surface of the doorstop, taking into consideration thermal insulation and fire prevention. In other words, molding the doorstop from resin can improve the thermal insulation of the building material. Furthermore, if the building material becomes hot due to a fire or other incident, the thermal expansion material expands to close the gap between the frame and the surface material, preventing the creation of flame holes inside and outside the building (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-48484 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the building fixture is exposed to high temperatures, the doorstop, which is made of resin, can melt and fall off from the metal part of the frame. If the doorstop falls off from the metal part of the frame, even if the weatherstripping material expands, it will be difficult to seal the gap between the frame and the surface material, which could affect fire resistance. In the building fixture described above, a metal reinforcing material is provided between the metal part of the frame and the doorstop, which can prevent the doorstop from falling off, but this is not necessarily desirable when considering thermal insulation.

[0005] In view of the above circumstances, the present invention aims to provide a fitting that can improve heat insulation and fire resistance. [Means for solving the problem]

[0006] In order to achieve the above object, the fitting according to the present invention is a fitting in which a face material is supported on a frame body so as to be able to open and close, the frame body having a metal frame portion facing the visible surface of the face material and a resin frame portion provided so as to protrude from the metal frame portion to the inner periphery side, a seal material attachment portion is provided on the visible surface of the resin frame portion, a frame-side seal material for the face material is attached to the seal material attachment portion, and a seal side thermal expansion member is provided between the frame-side seal material and the frame-side seal material. The resin frame portion is attached to the metal frame portion by snap-fit ​​engagement, and the front-side thermal expansion member is provided in the tension material attachment portion so as to be biased toward a portion close to the metal frame portion. It is characterized by the fact that [Effects of the Invention]

[0007] According to the present invention, the frame body is configured to have a metal frame portion and a resin frame portion, and by placing the resin frame portion on the indoor side, it is possible to improve thermal insulation. Moreover, if the door fixture becomes hot during a fire or other event, the thermal expansion member on the front side expands, suppressing the temperature rise of the resin frame portion, which functions as the door stop, and preventing the resin frame portion from falling off the metal frame portion. This eliminates the need for a metal reinforcing member between the metal frame portion and the resin frame portion, which is advantageous in terms of thermal insulation and fire resistance. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing a fitting according to an embodiment of the present invention as seen from the inside of a room. [Figure 2] FIG. 2 is a vertical cross-sectional view of the fitting shown in FIG. 1. [Figure 3] FIG. 2 is a cross-sectional view of the fitting shown in FIG. 1. [Figure 4] This shows the upper frame of the frame body and the upper stile of the surface material applied to the building fixture shown in Figure 1, where (a) is a vertical cross-sectional view of the surface material closed against the frame body, and (b) is a vertical cross-sectional view of the upper stile separated from the upper frame. [Figure 5] FIG. 2 is a vertical cross-sectional perspective view showing the upper part of the fitting shown in FIG. 1. [Figure 6] FIG. 2 is a vertical cross-sectional perspective view showing the upper part of a frame body applied to the fitting shown in FIG. 1. [Figure 7] This shows the bottom frame of the frame body and the bottom stile of the surface material applied to the building fixture shown in Figure 1, where (a) is a vertical cross-sectional view of the surface material closed against the frame body, and (b) is a vertical cross-sectional view of the bottom stile separated from the bottom frame. [Figure 8] This shows the vertical frame from which the frame body is hung and the vertical stile from which the panel is hung, which are applied to the fitting shown in Figure 1, where (a) is a cross-sectional view of the panel closed against the frame body, and (b) is a cross-sectional view of the panel separated from the vertical frame. [Figure 9] FIG. 2 is a cross-sectional perspective view showing the hanging portion of the fitting shown in FIG. 1. [Figure 10] FIG. 2 is a cross-sectional perspective view of a vertical frame that serves as a suspension base for the frame body applied to the fitting shown in FIG. [Figure 11] This shows the vertical frame that forms the door edge of the frame body and the vertical stile that forms the door edge of the panel that is applied to the building fixture shown in Figure 1, where (a) is a cross-sectional view of the panel body closed against the frame body, and (b) is a cross-sectional view of the panel body separated from the vertical frame. [Figure 12] FIG. 2 is a cross-sectional perspective view showing the door edge portion of the fixture shown in FIG. [Figure 13] FIG. 2 is a cross-sectional perspective view of a vertical frame that forms the door edge of a frame body applied to the fitting shown in FIG. [Figure 14] FIG. 10 is a vertical cross-sectional view of a modified fitting. [Figure 15] FIG. 15 is a cross-sectional view of the fixture shown in FIG. 14. DETAILED DESCRIPTION OF THE INVENTION

[0009] Preferred embodiments of the fittings according to the present invention will be described in detail below with reference to the accompanying drawings. Note that, for convenience, the terms "invisible direction" and "visible direction" will be used below. The "invisible direction" is the direction along the depth of the fittings, as indicated by arrow A in the drawings. A surface along the invisible direction will be referred to as a "visible face." The "visible direction" is the direction perpendicular to the invisible direction in the case of an object that extends horizontally, such as a sill. In the case of an object that extends vertically, such as a vertical frame, the "visible direction" is the horizontal direction perpendicular to the invisible direction. A surface along the invisible direction will be referred to as a "visible face."

[0010] 1 to 3 show a fitting according to an embodiment of the present invention. The fitting illustrated here is used as a back door and includes a frame 10 and a door panel (face material) 20. The frame 10 is formed by a framework consisting of an upper frame 11, a lower frame 12, and left and right vertical frames 13. The door panel 20 includes a panel frame 21, two ventilation screens 22A and 22B, and a lattice screen 23, and is supported on the frame 10 via a hinge 1 interposed between the panel frame 21 and one of the vertical frames 13 so as to be openable and closable. The configurations of the frame 10 and the door panel 20 will be described in detail below, along with a description of the features of the present invention. Note that the orientations of the components of the frame 10 and the door panel 20 will be specified based on their orientation when attached to the building frame.

[0011] The upper frame 11, lower frame 12, and left and right vertical frames 13 that make up the frame 10 are all composite frames made up of metal and resin frames, and are attached to the main frame with the metal frames facing the exterior. The metal frames are extruded shapes made of metal such as aluminum alloy, and the resin frames are extruded shapes made of resin. These metal and resin frames are each configured so that their entire longitudinal length has a substantially uniform cross-sectional shape. In the embodiment of the frame 10, the left and right vertical frames 13 are symmetrical to each other, so only one will be described; the other will be assigned the same reference numeral and description will be omitted.

[0012] As shown in Figures 4 to 6, the metal frame portion of the upper frame 11 (hereinafter referred to as the metal upper frame portion 11M) is integrally formed with the upper frame base 11M1, nail fin portions 11M2, and engagement receiving portions 11M3. In the illustrated example, a hollow protrusion 11M4 is formed on the outer peripheral portion of the upper frame base 11M1. The upper frame base 11M1 is a thin plate extending approximately horizontally along the projection direction. The nail fin portion 11M2 is used to attach the metal upper frame portion 11M to the building frame, and is a thin plate extending along the projection direction from the outer peripheral projection surface of the upper frame base 11M1. The engagement receiving portion 11M3 is provided on the portion of the inner peripheral projection surface of the upper frame base 11M1 that is located on the indoor side. An accommodation recess 11M5 is provided on the inner peripheral surface of the upper frame base 11M1 in a portion facing the exterior of the room relative to the engagement receiving portion 11M3, and a frame-side thermally expandable member EX1 is disposed so as to be accommodated in this accommodation recess 11M5. The frame-side thermally expandable member EX1 is a non-combustible or flame-retardant fire-resistant member that expands due to heat, and is provided continuously along the entire longitudinal length of the upper frame base 11M1. For example, a thermally expandable graphite-containing foam material can be used as the frame-side thermally expandable member EX1.

[0013] The resin frame portion of the upper frame 11 (hereinafter referred to as the resin upper frame portion 11P) functions as a doorstop by protruding inward from the front surface of the upper frame base portion 11M1 in a generally rectangular parallelepiped shape. The resin upper frame portion 11P has an engaging claw portion 11P1 on its outer periphery and a waterproofing material attachment portion 11P2 on its inner periphery on its front surface facing the exterior. The engaging claw portion 11P1 snap-fits into an engaging receptacle portion 11M3 on the metal upper frame portion 11M, thereby removably attaching the resin upper frame portion 11P to the metal upper frame portion 11M. The waterproofing material attachment portion 11P2 is a recess that opens to the front surface of the resin upper frame portion 11P. A frame-side waterproofing material AT1, which ensures airtightness and watertightness for the door panel 20 (described later), is attached continuously along its entire length to the waterproofing material attachment portion 11P2. As is clear from the figure, the frame-side thermally expandable member EX1 of the upper frame 11 described above is provided to correspond to the outer peripheral surface of the frame-side tension material AT1 and the area extending beyond the frame-side tension material AT1 to the outdoor side. A nail fin portion 11P3 is integrally provided in the approximate center of the surface of the resin upper frame portion 11P facing indoors. The nail fin portion 11P3 is used to attach the resin upper frame portion 11P to the main body.

[0014] As shown in Figure 7, the metal frame portion of the lower frame 12 (hereinafter referred to as the metal lower frame portion 12M) is integrally formed with the lower frame base 12M1, nail fin portion 12M2, door stop portion 12M3, and engagement receiving portion 12M4. In the illustrated example, similar to the metal upper frame portion 11M, a hollow protrusion portion 12M5 is formed on the outer peripheral portion of the lower frame base 12M1. The lower frame base 12M1 is a thin plate extending approximately horizontally along the projection direction. The nail fin portion 12M2 is used to attach the metal lower frame portion 12M to the building frame and is a thin plate extending along the projection direction from the outer peripheral projection surface of the lower frame base 12M1. The door stop portion 12M3 protrudes in an approximately rectangular parallelepiped shape toward the inner peripheral side from the edge located on the indoor side of the inner peripheral projection surface of the lower frame base 12M1. The doorstop portion 12M3 has a storage recess 12M6 and a sealant attachment portion 12M7 on its visible surface facing the outside of the room. The storage recess 12M6 is provided on the outer periphery of the doorstop portion 12M3 and houses the frame-side thermally expandable member EX2 inside. The sealant attachment portion 12M7 is a recess that opens onto the visible surface of the doorstop portion 12M3. A frame-side sealant AT2 similar to the frame-side sealant AT1 of the upper frame 11 is attached continuously over its entire length to this sealant attachment portion 12M7. The engagement receiving portion 12M4 is provided on the visible surface that faces the inner periphery of the doorstop portion 12M3.

[0015] The resin frame portion of the bottom frame 12 (hereinafter referred to as the resin lower frame portion 12P) is a thin plate extending along the projection direction, and has engaging claws 12P1 on the outer periphery, on the portion facing the exterior of the room. The engaging claws 12P1 snap-fit ​​into engaging receptacles 12M4 on the metal lower frame portion 12M, thereby removably attaching the resin lower frame portion 12P to the metal lower frame portion 12M. When the resin lower frame portion 12P is attached to the metal lower frame portion 12M via the engaging claws 12P1, the portion facing the interior of the room protrudes toward the room, forming nail fins 12P2 corresponding to the nail fins 11P3 of the resin upper frame portion 11P. The nail fins 12P2 are used to attach the resin lower frame portion 12P to the building frame.

[0016] As shown in Figures 8 to 13, the metal frame portion of the vertical frame 13 (hereinafter referred to as the metal vertical frame portion 13M) is integrally formed with a vertical frame base 13M1, nail fin portions 13M2, protrusions 13M3, and engagement receiving portions 13M4. The vertical frame base 13M1 is a thin plate extending approximately vertically along the projection direction. The nail fin portions 13M2 are used to attach the metal vertical frame portion 13M to the frame frame, and are thin plate-like extending along the projection direction from the projection surface on the outer periphery of the vertical frame base 13M1. The protrusions 13M3 form a hollow portion with a substantially rectangular cross section on the inner periphery of the vertical frame base 13M1. A storage recess 13M5 is provided on the inner periphery of the protrusion 13M3, facing the room, and the frame-side thermally expandable member EX3 is housed in this storage recess 13M5. The engagement receiving portions 13M4 are provided on the inner peripheral portion of the vertical frame base 13M1 facing the room side and on the portion of the protruding portion 13M3 extending in the direction of view on the room side. The frame-side thermally expandable members EX3 are provided continuously along the entire length of the protruding portion 13M3, and each upper end portion is arranged in contact with or adjacent to the frame-side thermally expandable members EX1 provided on the upper frame 11 so as to be continuous with them.

[0017] The resin frame portion of the vertical frame 13 (hereinafter referred to as the resin vertical frame portion 13P) functions as a doorstop for the vertical frame 13 by protruding inward in a generally rectangular parallelepiped shape from a portion of the vertical frame base 13M1 that is closer to the room than the protruding portion. The resin vertical frame portion 13P has an engaging claw portion 13P2 on the outer periphery of the hollow resin frame body 13P1, and a seal material attachment portion 13P3 on the facing surface of the resin frame body 13P1 that faces the outside. The engaging claw portion 13P2 protrudes outward from the resin frame body 13P1 and snaps into an engaging receptacle portion 13M4 on the metal vertical frame portion 13M, allowing the resin vertical frame portion 13P to be detachably attached to the metal vertical frame portion 13M. The seal material attachment portion 13P3 is a recess that opens to the facing surface of the resin vertical frame portion 13P. A frame-side tensioning material AT3, similar to the frame-side tensioning material AT1 described above, is attached continuously along the entire length of this tensioning material attachment portion 13P3, and a front-side thermally expandable member EX4 is disposed between the frame-side tensioning material AT3. Frame-side tensioning materials AT3 with different cross-sectional shapes are used for the left and right vertical frames 13. The front-side thermally expandable member EX4 is disposed at a position offset toward the outer periphery of the tensioning material attachment portion 13P3 so as to face the gap between the vertical frame 13 and the vertical stiles 213, 214 and be close to the metal vertical frame portion 13M. As is clear from the figure, the frame-side thermally expandable member EX3 of the vertical frame 13 described above is disposed in a range corresponding to the outer periphery of the frame-side tensioning material AT1 and the portion of the frame-side tensioning material AT1 that is on the outside of the room. At the corners on the outer periphery of the resin frame main body 13P1, facing the interior, nail fins 13P4 corresponding to the nail fins 11P3 of the resin upper frame 11P are integrally provided facing the interior.

[0018] As shown in Figures 2 and 3, the panel frame 21 of the door panel 20 is formed by framing an upper frame 211, a lower frame 212, and left and right vertical frames 213, 214 all around. The upper frame 211, the lower frame 212, and the vertical frames 213, 214 are all composite frames equipped with metal frame portions (metal surface material portions) formed from metal such as aluminum alloy and resin frame portions (resin surface material portions) formed from resin, and are supported by the frame 10 with the metal frame portions facing the exterior. The metal frame portions and the resin frame portions are both extruded shapes, and each is configured so that the entire longitudinal length has a substantially uniform cross-sectional shape.

[0019] The metal frame portion of the upper frame 211 (hereinafter referred to as the metal upper frame portion 211M) is formed by integrally molding the upper frame base portion 211M1 and the upper frame support wall portion 211M2, as shown in Figures 4 and 5. The upper frame base portion 211M1 is hollow and has a vertically elongated, approximately rectangular cross section. An auxiliary thermal expansion member EXS1 is provided on the outer peripheral surface of the upper frame base portion 211M1. The auxiliary thermal expansion member EXS1 faces the metal upper frame portion 11M of the upper frame 11 when the door panel 20 is closed against the frame body 10. In addition, a first resin frame portion (hereinafter referred to as the first resin upper frame portion 211P1) is attached to the upper frame base portion 211M1 so as to cover almost the entire visible surface facing the interior of the vehicle. A second resin frame portion (hereinafter referred to as the second resin frame portion 211P2) is provided so as to protrude toward the indoor side on the visible surface that forms the inner periphery of the upper frame base portion 211M1 and the first resin upper frame portion 211P1. The upper frame support wall portion 211M2 extends almost horizontally from the inner periphery of the visible surface that faces the outside of the upper frame base portion 211M1 toward the outside, and then forms a thin plate that is bent almost at a right angle toward the inner periphery. As is clear from the figure, the dimensions of the metal upper frame portion 211M are set so that when the door panel 20 is closed against the frame body 10, the facing surface of the upper frame base portion 211M1 facing outside the room is located inside the room relative to the facing surface of the upper frame 11 facing outside the room, while the facing surface of the upper frame support wall portion 211M2 facing outside the room protrudes outside the room relative to the facing surface of the upper frame 11 facing outside the room. The first resin upper frame portion 211P1 and the second resin upper frame portion 211P2 are both contained within the visible surface of the upper frame 11 when the door panel 20 is closed against the frame body 10, and their dimensions are set so that the visible surface of the first resin upper frame portion 211P1 facing the interior of the vehicle comes into contact with the frame side tension material AT1 of the upper frame 11, and the outer peripheral surface of the first resin upper frame portion 211P1 faces the frame side thermal expansion member EX1 provided on the upper frame 11. The symbol EX5 in the figure is a thermal expansion member provided on the inner peripheral side of the first resin upper frame portion 211P1 at a corner facing outside the vehicle.

[0020] As shown in Figure 7, the metal frame portion of the lower frame 212 (hereinafter referred to as the metal lower frame portion 212M) is formed by integrally molding the lower frame base portion 212M1, the lower frame boundary wall portion 212M2, the lower frame inner peripheral wall portion 212M3, and the lower frame support wall portion 212M4. Similar to the upper frame base portion 211M1, the lower frame base portion 212M1 is hollow with a vertically elongated, approximately rectangular cross section. A reinforcing member 212R is provided within the hollow interior of the lower frame base portion 212M1. The reinforcing member 212R is made of a metal such as aluminum alloy or steel, and is provided so as to follow the outdoor and inner peripheral portions of the hollow interior of the lower frame base portion 212M1. The dimensions of the lower stile base 212M1 along the projection direction and the projection direction are approximately the same as those of the upper stile base 211M1. An auxiliary thermal expansion member EXS2 is provided on the projection surface on the outer periphery of the lower stile base 212M1. The auxiliary thermal expansion member EXS2 faces the metal lower frame portion 12M of the lower frame 12 when the door panel 20 is closed against the frame body 10. The lower stile boundary wall portion 212M2 is a thin plate-like member that protrudes toward the inner periphery from approximately the center of the projection surface on the inner periphery of the lower stile base 212M1. The lower stile inner peripheral wall portion 212M3 protrudes toward the inner periphery from a corner on the interior side of the lower stile base 212M1, then bends toward the interior and then bends again toward the inner periphery. The lower frame support wall portion 212M4 is a thin plate-like member that extends gradually downward from the outer corner of the lower frame base portion 212M1 toward the exterior of the room. The protruding dimension of the lower frame support wall portion 212M4 toward the exterior is approximately the same as the protruding dimension of the upper frame support wall portion 211M2 toward the exterior of the room. A first resin frame portion (hereinafter referred to as the first resin lower frame portion 212P1) is attached to this metal lower frame portion 212M so as to cover almost the entire visible surface of the lower frame base portion 212M1 that faces the interior of the room, and a second resin frame portion (hereinafter referred to as the second resin lower frame portion 212P2) is attached so as to cover the outer surface of the lower frame inner peripheral wall portion 212M3 and the visible surface that faces the interior of the room.As is clear from the figure, the dimensions of the metal stile portion 212M are set so that, when the door panel 20 is closed to the frame body 10, the visible surface of the stile base portion 212M1 facing the outside is located closer to the interior than the visible surface of the lower frame 12 facing the outside, while the visible surface of the stile support wall portion 212M4 facing the outside protrudes further to the exterior than the visible surface of the lower frame 12 facing the outside. The dimensions of the first resin stile portion 212P1 and the second resin stile portion 212P2 are set so that, when the door panel 20 is closed to the frame body 10, both are contained within the visible surface of the lower frame 12, and the visible surface of the first resin stile portion 212P1 facing the interior is in contact with the frame-side tension material AT2 of the lower frame 12.

[0021] 7 indicate thermal expansion members provided on the lower frame 212. That is, the symbol EX6 is a thermal expansion member provided on three surfaces of the reinforcing member 212R, the symbol EX7 is a thermal expansion member provided on the inner peripheral surface of the lower frame base 212M1, which is closer to the room than the lower frame boundary wall 212M2, and the symbol EX8 is a thermal expansion member provided on the inner peripheral surface of the lower frame inner peripheral wall 212M3 and on the visible surface facing outside the room.

[0022] The metal frame portion of the vertical frame 213 from which the door panel 20 is hung (hereinafter referred to as the metal hanging frame portion 213M) is formed by mutually engaging a first metal hanging frame portion 213MA and a second metal hanging frame portion 213MB which are molded separately from each other, as shown in Figures 8 and 9.

[0023] The first metal hanging base frame 213MA is hollow and has a horizontally elongated, approximately rectangular cross section. The hinge 1 described above is provided between the outer peripheral surface of the first metal hanging base frame 213MA and the metal vertical frame 13M of the vertical frame 13. A first resin frame (hereinafter referred to as the first resin hanging base frame 213P1) is attached to the inner surface of the first metal hanging base frame 213MA, covering almost the entire surface. The first metal hanging base frame 213MA is provided with a reinforcing member 213R inside the hollow, and a surface material-side tension member 213AT and an auxiliary thermal expansion member EXS3 are provided on the outer peripheral surface. The reinforcing member 213R is made of metal such as aluminum alloy or steel, and is provided along the outdoor and inner peripheral portions of the hollow interior. The face material-side tightness material 213AT is provided continuously over the entire length along the longitudinal direction, and is intended to ensure watertightness and airtightness between the door panel 20 and the vertical frame 13 by contacting the protrusion 13M3 of the metal vertical frame portion 13M when the door panel 20 is closed against the frame body 10. The auxiliary thermally expandable member EXS3 is provided continuously over the entire length along the longitudinal direction, on a portion that is closer to the exterior than the face material-side tightness material 213AT. In other words, when the door panel 20 is closed, this auxiliary thermally expandable member EXS3 is provided in a position that faces the metal vertical frame portion 13M of the vertical frame 13, and is sandwiched between the face material-side tightness material 213AT and the frame-side thermally expandable member EX3 provided on the vertical frame 13 in the projection direction. In addition, the dimensions of the first metal hanging frame portion 213MA and the first resin hanging frame portion 213P1 are set so that when the door panel 20 is closed, the frame side thermal expansion member EX3 provided on the vertical frame 13 is positioned opposite both the projected surface that is on the outer periphery of the first metal hanging frame portion 213MA and the projected surface that is on the outer periphery of the first resin hanging frame portion 213P1.

[0024] The second metal hanging frame portion 213MB is formed by integrally molding a vertical frame base portion 213MB1, a vertical frame inner sight wall portion 213MB2, a vertical frame outer sight wall portion 213MB3, and a vertical frame boundary wall portion 213MB4. The vertical frame base portion 213MB1 is a flat plate extending almost vertically along the projection direction. The vertical frame inner sight wall portion 213MB2 is a thin plate extending from the indoor side edge of the vertical frame base portion 213MB1 toward the inner periphery. The vertical frame outer sight wall portion 213MB3 is a flat plate extending from the outdoor side edge of the vertical frame base portion 213MB1 toward the inner periphery. The vertical stile boundary wall 213MB4 is a thin plate that protrudes inward from the vertical stile base 213MB1 at a portion of its inner projection surface that is approximately equidistant from the vertical stile inner sight wall 213MB2 and the vertical stile outer sight wall 213MB3. A vertical stile inner circumference cover 213C molded from resin is attached to the portion extending from the projection surface of the vertical stile boundary wall 213MB4 facing the room to the projection surface of the vertical stile base 213MB1. In addition, a second resin stile portion (hereinafter referred to as the second resin hanging base stile portion 213P2) molded from resin is attached to the portion extending from the projection surface of the vertical stile inner sight wall 213MB2 facing the room to the projection surface of the vertical stile base 213MB1.

[0025] 8 indicate thermal expansion members provided on the vertical frame 213, which serves as the hanging base. That is, the symbol EX9 is a thermal expansion member provided on the projected surface that will be the inner periphery of the first metal hanging base frame portion 213MA, the symbol EX10 is a thermal expansion member provided on the portion extending to the outside of the room of the reinforcing member 213R, the symbol EX11 is a thermal expansion member provided on the projected surface that will be the inner periphery of the vertical frame base portion 213MB1 in the second metal hanging base frame portion 213MB, the symbol EX12 is a thermal expansion member provided on the projected surface that faces the room of the vertical frame boundary wall portion 213MB4, and the symbol EX13 is a thermal expansion member provided on the projected surface that will be the inner periphery of the vertical frame inner periphery cover portion 213C.

[0026] The metal frame portion of the vertical frame 214 that forms the door end of the door panel 20 (hereinafter referred to as the metal door end frame portion 214M) has a first metal door end frame portion 214MA and a second metal door end frame portion 214MB that are molded separately from each other, as shown in Figures 11 and 12.

[0027] The first metal door leading stile 214MA, like the first metal hanging stile 213MA, is hollow and has a horizontally elongated, approximately rectangular cross section. However, it differs from the first metal hanging stile 213MA in that it has a smoke deflector 214MA1. Specifically, the first metal door leading stile 214MA is integrally formed with the smoke deflector 214MA1, which protrudes from the exterior corner of the outer periphery toward the outside and then bends toward the outer periphery. A surface-side tension member 214AT is provided on the portion of the first metal door leading stile 214MA facing the interior of the room relative to the smoke deflector 214MA1. An auxiliary thermal expansion member EXS4 is provided on the surface of the first metal door leading stile 214MA that is expected to be on the outer periphery. The auxiliary thermal expansion member EXS4 faces the metal vertical frame portion 13M of the vertical frame 13 when the door panel 20 is closed against the frame 10. Ribs 214MA2 are provided to protrude from the first metal door leading stile 214M on both sides of the auxiliary thermal expansion member EXS4. A first resin stile (hereinafter referred to as the first resin door leading stile 214P1) is attached to the front surface of the first metal door leading stile 214MA facing the interior of the room, covering almost the entire surface. The first resin door leading stile 214P1 is configured symmetrically to the first resin hanging base stile 213P1. The symbol 2 in the figure denotes door handles provided on the first metal door leading stile 214MA and the first resin door leading stile 214P1.

[0028] The second metal door front stile 214MB, like the second metal hanging base stile 213MB, is formed by integrally molding a vertical stile base 214MB1, a vertical stile inner sight wall 214MB2, a vertical stile outer sight wall 214MB3, and a vertical stile boundary wall 214MB4. It is also similar to the hanging base stile 213 in that it is provided with a vertical stile inner periphery cover 214C and a second resin door front stile 214P2.

[0029] In the drawing, the symbols EX14, EX15, EX16, and EX17 each indicate a thermal expansion member provided on the vertical frame 214 that forms the door end. That is, symbol EX14 is a thermal expansion member provided on the projected surface that forms the inner periphery of the first metal door end stile portion 214MA, symbol EX15 is a thermal expansion member provided on the projected surface that forms the inner periphery of the vertical frame base portion 214MB1 in the second metal door end stile portion 214MB, symbol EX16 is a thermal expansion member provided on the projected surface that faces the room of the vertical frame boundary wall portion 214MB4, and symbol EX17 is a thermal expansion member provided on the projected surface that forms the inner periphery of the vertical frame inner periphery cover portion 214C.

[0030] The two ventilation shoji screens 22A, 22B are arranged so as to be movable up and down inside the panel frame 21 at the inside of the room relative to the lower frame boundary wall 212M2, the vertical frame boundary wall 213MB4, and the vertical frame boundary wall 214MB4, and at the outside of the room relative to the lower frame boundary wall 212M2, the vertical frame boundary wall 213MB4, and the vertical frame boundary wall 214MB4. The indoor ventilation shoji screen (hereinafter referred to as the ventilation inner shoji screen 22A when distinguishing it) is constructed by attaching a ventilation upper frame 22A2, a ventilation lower frame 22A3, and left and right ventilation vertical frames 22A4 around the four periphery of a rectangular double-glazed glass 22A1. The ventilation shoji screen on the outside of the room (hereinafter referred to as the outer ventilation shoji screen 22B when distinguishing between them) is constructed by attaching an upper ventilation frame 22B2, a lower ventilation frame 22B3, and left and right ventilation vertical frames 22B4 around the four periphery of a rectangular double-glazed glass 22B1. In this embodiment, the inner ventilation shoji screen 22A is positioned below the upper ventilation frame 22A2 of the inner ventilation shoji screen 22A and the lower ventilation frame 22B3 of the outer ventilation shoji screen 22B are arranged side by side in the forward direction, and the dimensions of each of the ventilation shoji screens 22A and 22B are set so that when the outer ventilation shoji screen 22B is positioned above, it can block the opening of the panel frame 21. The upper ventilation frame 22A2, the lower ventilation frame 22A3, the left and right ventilation vertical frames 22A4 of the inner ventilation screen 22A, and the upper ventilation frame 22B2, the left and right ventilation vertical frames 22B4 of the outer ventilation screen 22B are all composite structures comprising a metal frame portion 22M formed from a metal such as an aluminum alloy and a resin frame portion 22P formed from a resin, with the metal frame portion 22M facing the outside, and holding the double-glazed glass 22A1, 22B1 between them. The lower ventilation frame 22B3 of the outer ventilation screen 22B is integrally formed from a metal such as an aluminum alloy. The frames that make up these ventilation screens 22A, 22B, including the metal frame portion 22M and the resin frame portion 22P, are all extruded shapes, each with a substantially uniform cross-sectional shape along its entire length.

[0031] Although not shown in the figure, these ventilation shoji screens 22A, 22B are connected to each other by a wire cable. The wire cable is wound around a pulley provided on the vertical frame 13, and is connected so that when the inner ventilation shoji screen 22A is moved upward, the outer ventilation shoji screen 22B moves downward. Reference numeral 30 in the figure indicates a case that houses the pulley. A thermal expansion member EX18 is provided on the inner peripheral portion of this case 30. In addition, a thermal expansion member EX19 is arranged on each of the ventilation shoji screens 22A, 22B on the prospective outer peripheral surfaces of the ventilation vertical frames 22A4, 22B4. Furthermore, the outer ventilation screen 22B is provided with a thermally expandable member EX20 on the visible surface that forms the outer periphery of the upper ventilation frame 22B2 and on the indoor side of the lower ventilation frame 22B3, and the inner ventilation screen 22A is provided with a thermally expandable member EX21 on the visible surface that forms the outer periphery of the lower ventilation frame 22A3 and on the indoor side of the upper ventilation frame 22A2.

[0032] The lattice screen door 23 is constructed by providing a net 23b and horizontal bars 23c inside a screen door frame body 23a. A thermally expandable member EX22 is provided between the lattice screen door 23 and the ventilation upper frame 22B2 of the ventilation outer screen 22B via a bracket 24.

[0033] In the fitting constructed as described above, the upper frame 11, lower frame 12, and vertical frame 13 of the frame body 10 are configured to have metal frame portions 11M, 12M, and 13M and resin frame portions 11P, 12P, and 13P, and the resin frame portions 11P, 12P, and 13P are arranged on the indoor side, thereby improving thermal insulation. Moreover, if the fitting becomes hot during a fire or other event, the front-side thermal expansion member EX4 attached to the vertical frame 13 expands, suppressing the temperature rise of the resin frame portion 13P, which functions as a doorstop, and preventing the resin frame portion 13P from falling off the metal frame portion 13M. In particular, in this embodiment, the front-side thermal expansion member EX4 is disposed in a position offset toward the outer periphery of the weatherstripping material attachment portion 13P3, and further, the hollow resin frame body 13P1 is provided in the resin frame portion 13P, thereby more reliably suppressing the temperature rise at the joint with the vertical metal frame portion 13M. This eliminates the need to provide a metal reinforcing material between the metal frame portion 13M and the resin frame portion 13P, which is advantageous in terms of heat insulation and fire resistance. In addition, the metal frame portions 11M, 12M, and 13M can be configured to engage with the resin frame portions 11P, 12P, and 13P by snap fit, which makes it easier to assemble the fittings.

[0034] In addition, in the above-described fitting, the entire surface of panel frame 21 of door panel 20 facing the interior of the room is covered with resin. That is, first resin upper frame portion 211P1 and second resin upper frame portion 211P2 are arranged in upper frame 211, first resin lower frame portion 212P1 and second resin lower frame portion 212P2 are arranged in lower frame 212, and first resin hanging base frame portion 213P1, second resin hanging base frame portion 213P2, first resin door end frame portion 214P1, and second resin door end frame portion 214P2 are arranged in vertical frames 213, 214. This reduces heat transfer between the interior and exterior of door panel 20, which is advantageous in terms of thermal insulation.

[0035] Moreover, in the upper frame 11, a frame-side thermally expandable member EX1 is provided on the visible surface of the metal frame portion 11M so as to face the first resin upper stile portion 211P1 and the frame-side tension material AT1. Similarly, in the vertical frame 13, a frame-side thermally expandable member EX3 is provided on the visible surface of the metal frame portion 13M so as to face the first resin hanging base stile portion 213P1 and the frame-side tension material AT3, and a frame-side thermally expandable member EX3 is provided so as to face the first resin door end stile portion 214P1 and the frame-side tension material AT3. Therefore, if the fitting becomes hot during a fire or other such event, even if the first resin upper stile portion 211P1, the frame-side tensioning material AT1, the first resin hanging base stile portion 213P1, the first resin door end stile portion 214P1, and the frame-side tensioning material AT3 melt or burn, the frame-side thermal-expansion members EX1 and EX3 expand to prevent a gap from forming between the fitting and the door panel 20, which is advantageous in terms of fire prevention. In particular, in this embodiment, the frame-side thermal-expansion members EX1 and EX3 are provided in the accommodation recesses 11M5 and 13M5. This prevents the frame-side thermal-expansion members EX1 and EX3 from protruding from the visible surfaces of the upper frame 11 and the vertical frame 13, eliminating concerns that the frame-side thermal-expansion members EX1 and EX3 may accidentally fall off and preventing a deterioration in the appearance quality of the fitting.

[0036] Furthermore, with regard to the vertical frame 13, the frame-side thermally expandable member EX3 extends to a position facing the first metal hanging origin stile 213MA and the first metal door front stile 214M in the vertical frames 213, 214. In other words, the frame-side thermally expandable member EX3 of the vertical frame 13 is provided so as to cover the joint between the first metal hanging origin stile 213MA and the first resin hanging origin stile 213P1 and the joint between the first metal door front stile 214M and the first resin door front stile 214P1. Therefore, when the frame side thermal expansion member EX3 expands, the temperature rise at the joint between the first metal hanging frame portion 213MA and the first resin hanging frame portion 213P1 and the joint between the first metal door front frame portion 214M and the first resin door front frame portion 214P1 is suppressed, preventing the first resin hanging frame portion 213P1 from falling off from the first metal door front frame portion 213MA or the first resin door front frame portion 214P1 from falling off from the first metal door front frame portion 214M, thereby improving fire resistance.

[0037] In addition, the frame side tight materials AT1 and AT3 do not need to be fire-resistant and may be those that melt or burn away, so it is possible to use flexible materials such as TPE (ThermoPlastic Elastomer), which reduces the resilience when closing the door panel 20 and improves opening and closing operability.

[0038] Furthermore, the door panel 20 is provided with auxiliary thermally expandable members EXS1, EXS2, EXS3, and EXS4 at the metal frame portions 211M, 212M, 213M, and 214M, respectively, at portions facing the metal frame portions 11M, 12M, and 13M. Therefore, even if the door panel 20 becomes slightly misaligned relative to the frame 10 due to high temperatures in the building materials, the auxiliary thermally expandable members EXS1, EXS2, EXS3, and EXS4 expand to more reliably seal the gap between the door panel 20 and the frame 10, providing fire protection. In particular, the vertical frame 213, which serves as the hanging point, is provided with a face-side thermally expandable member 213AT sandwiched between the frame-side thermally expandable member EX3 and the frame-side thermally expandable member EX3. Therefore, whether the temperature is high from the outside or the inside of the room, melting of the face-side thermally expandable member 213AT can be prevented, which is advantageous from the standpoint of fire protection.

[0039] In the above-described embodiment, the door panel 20 is exemplified as a panel housing 21 equipped with ventilation screens 22A, 22B and a lattice screen 23, but the present invention is not necessarily limited to this. For example, as in the modified example shown in Figures 14 and 15, a door panel 20' having a fixed window 40 provided in the panel housing may be applied, or one that simply does not have ventilation screens or fixed windows may be applied. In the modified example, the same components as in the embodiment are designated by the same reference numerals.

[0040] Furthermore, in the above-described embodiment, a back door is exemplified, but the present invention can be similarly applied to other fixtures.

[0041] Furthermore, in the above-described embodiment, the front-side thermal expansion member EX4 is provided only on the vertical frame 13, but it may also be provided on the upper frame 11 or the lower frame 12. Furthermore, although the metal frame portion and the resin frame portion are engaged by snap-fit ​​engagement, this is not necessarily limited to this.

[0042] As described above, the building fixture of the present invention is a building fixture in which a face material is supported on a frame body so that it can be opened and closed, and the frame body has a metal frame portion facing the visible surface of the face material and a resin frame portion arranged to protrude inward from the metal frame portion, and a tension material attachment portion is provided on the visible surface of the resin frame portion, and a frame-side tension material is attached to the tension material attachment portion for the face material, and a tension material attachment portion has a visible-side thermal expansion member provided between the frame-side tension material and the frame-side tension material. According to this invention, the frame is configured to have a metal frame portion and a resin frame portion, and by placing the resin frame portion on the indoor side, it is possible to improve thermal insulation. Moreover, if the door fixture becomes hot during a fire or other event, the thermal expansion member on the front side expands, suppressing the temperature rise of the resin frame portion, which functions as the door stop, and preventing the resin frame portion from falling off the metal frame portion. This eliminates the need for a metal reinforcing member between the metal frame portion and the resin frame portion, which is advantageous in terms of thermal insulation and fire resistance.

[0043] Furthermore, the present invention is characterized in that in the above-mentioned fitting, the resin frame portion is attached to the metal frame portion by snap-fit ​​engagement. According to this invention, it is possible to easily attach the resin frame portion to the metal frame portion.

[0044] The present invention is also characterized in that, in the above-mentioned building fixture, the visible-side thermal expansion member is arranged biased toward the part of the tension material attachment portion that is close to the metal frame portion. According to this invention, the expansion of the thermally expandable member on the front side can suppress the temperature rise of the snap-fit ​​engagement portion between the resin frame portion and the metal frame portion, thereby more reliably preventing the resin frame portion from falling off the metal frame portion in the event of a high temperature condition.

[0045] The present invention is also characterized in that, in the above-mentioned building fixture, the resin frame portion has a hollow portion, and the front-side thermal expansion member is provided between the hollow portion and the frame-side tight material. According to this invention, the hollow portion can improve the heat insulating properties of the resin frame portion, and it is possible to more reliably prevent the resin frame portion from falling off from the metal frame portion.

[0046] The present invention is also characterized in that, in the above-mentioned building fixture, the surface material has a metal surface material portion made of a metal material and a resin surface material portion made of a resin material provided on one surface side of the metal surface material portion, and the metal frame portion has a frame side thermal expansion member provided in a portion facing the frame side tight material and the resin surface material portion. According to this invention, the panel is constructed so that one surface has a resin panel, which is advantageous in terms of heat insulation. Moreover, if the fixture becomes hot during a fire or other event, the frame-side thermal expansion member, which is provided on the visible surface of the metal frame so as to face the frame-side tension material and the resin panel, will expand, preventing gaps from forming between the panel and the resin panel even if the resin panel melts or burns down.

[0047] The present invention is also characterized in that, in the above-mentioned building fixture, the frame body has an upper frame at the upper end of the left and right vertical frames, and the frame side thermal expansion member is provided at least on the metal frame portion of the vertical frames and extends to a position opposite the metal surface material portion. According to this invention, the expansion of the frame-side thermally expandable member suppresses the temperature rise at the joint between the metal surface material portion and the resin surface material portion, thereby preventing the resin surface material portion from falling off from the metal surface material portion and improving fire resistance.

[0048] Furthermore, the present invention is characterized in that in the above-mentioned fitting, a surface material-side thermal expansion member is provided in the portion of the metal surface material portion that faces the metal frame portion. According to this invention, even if the position of the face material shifts relative to the frame body due to high temperature conditions, the auxiliary thermally expandable member expands, making it possible to more reliably seal the gap between the face material and the frame body, which is advantageous in terms of fire resistance.

[0049] The present invention is also characterized in that, in the above-mentioned building fixture, the metal surface material portion is provided with a surface material side tight material for the metal frame portion, and the surface material side thermal expansion member is provided in a position where the surface material side tight material is sandwiched between the frame side thermal expansion member and the surface material side thermal expansion member. According to this invention, even if either the indoor or outdoor side becomes hot, the expansion of the auxiliary thermal expansion member or the frame side thermal expansion member can prevent the occurrence of a situation in which the surface material side tight material melts or burns.

[0050] Furthermore, the present invention is characterized in that, in the above-mentioned building fixture, the frame body has an upper frame at the upper ends of the left and right vertical frames, and the frame side thermal expansion member is provided on each of the metal frame portions of the left and right vertical frames and the metal frame portion of the upper frame. According to this invention, it is possible to prevent gaps from occurring on three sides between the frame body and the face material.

[0051] The present invention is also characterized in that, in the above-mentioned building fixture, the frame-side thermal expansion members provided on the left and right vertical frames are arranged so that their individual upper ends come into contact with the frame-side thermal expansion members provided on the upper frame. According to this invention, it is possible to prevent gaps from occurring between the surface material and the inside corners of the left and right vertical frames and the upper frame.

[0052] The present invention is also characterized in that, in the above-mentioned building fixture, a recess is provided on the visible surface of the frame body, and the frame-side thermal expansion member is provided in the recess. According to this invention, it is possible to prevent the frame-side thermal expansion member from protruding from the visible surface, eliminating the concern that the frame-side thermal expansion member will fall off inadvertently and improving the appearance quality of the building materials. [Explanation of symbols]

[0053] 10 frame body, 11 upper frame, 11M, 12M, 13M metal frame portion, 11M3, 12M4, 13M4 engagement receiving portion, 11M5, 13M5 accommodation recess, 11P, 12P, 13P resin frame portion, 11P1, 12P1, 13P2 engagement claw portion, 13 vertical frame, 13P1 resin frame portion main body, 13P3 seal material attachment portion, 20 door panel, 211M, 212M, 213M, 214M metal frame portion, 211P1, 211P2, 212P1, 212P2, 213P1, 213P2, 214P1, 214P2 resin frame portion, 213AT, 214AT face material side seal material, AT1, AT3 frame side seal material, EX1, EX3 Frame side thermal expansion member, EX4, Exterior side thermal expansion member, EXS1, EXS2, EXS3, EXS4 Auxiliary thermal expansion member

Claims

1. A fitting in which a surface material is supported on a frame body so as to be openable and closable, The frame body has a metal frame portion facing the visible surface of the face material and a resin frame portion provided so as to protrude from the metal frame portion to the inner circumferential side, A tension material mounting portion is provided on the visible surface of the resin frame portion, and a frame-side tension material is mounted on the tension material mounting portion relative to the face material, and a tension material mounting portion is provided between the frame-side tension material and the visible-side thermal expansion member, the resin frame portion is attached to the metal frame portion by snap-fit ​​engagement, The fixture is characterized in that the front-side thermal expansion member is biased toward a portion of the tension material attachment portion that is close to the metal frame portion.

2. A fixture in which a surface material is supported on a frame body so as to be openable and closable, The frame body has a metal frame portion facing the visible surface of the face material and a resin frame portion provided so as to protrude from the metal frame portion to the inner circumferential side, A tension material mounting portion is provided on the visible surface of the resin frame portion, and a frame-side tension material is mounted on the tension material mounting portion relative to the face material, and a tension material mounting portion is provided between the frame-side tension material and the visible-side thermal expansion member, The surface material has a metal surface material portion made of a metal material and a resin surface material portion made of a resin material provided on one surface side of the metal surface material portion, The metal frame portion is provided with a frame-side thermal expansion member in a portion facing the frame-side tight material and the resin face material portion, a surface material-side thermal expansion member is provided in a portion of the metal surface material portion facing the metal frame portion, The metal surface material portion is provided with a surface material side tightening material for the metal frame portion, A fixture characterized in that the face material side thermal expansion member is positioned so that the face material side tight material is sandwiched between it and the frame side thermal expansion member.

3. A fixture in which a surface material is supported on a frame body so as to be openable and closable, The frame body has a metal frame portion facing the visible surface of the face material and a resin frame portion provided so as to protrude from the metal frame portion to the inner circumferential side, A tension material mounting portion is provided on the visible surface of the resin frame portion, and a frame-side tension material is mounted on the tension material mounting portion relative to the face material, and a tension material mounting portion is provided between the frame-side tension material and the visible-side thermal expansion member, The surface material has a metal surface material portion made of a metal material and a resin surface material portion made of a resin material provided on one surface side of the metal surface material portion, The metal frame portion is provided with a frame-side thermal expansion member in a portion facing the frame-side tight material and the resin face material portion, The frame body has upper frames at the upper ends of the left and right vertical frames, A fixture characterized in that the frame-side thermal expansion member is provided on each of the metal frame portions of the left and right vertical frames and the metal frame portion of the upper frame.

4. A fixture in which a surface material is supported on a frame body so as to be openable and closable, The frame body has a metal frame portion facing the visible surface of the face material and a resin frame portion provided so as to protrude from the metal frame portion to the inner circumferential side, A tension material mounting portion is provided on the visible surface of the resin frame portion, and a frame-side tension material is mounted on the tension material mounting portion relative to the face material, and a tension material mounting portion is provided between the frame-side tension material and the visible-side thermal expansion member, The surface material has a metal surface material portion made of a metal material and a resin surface material portion made of a resin material provided on one surface side of the metal surface material portion, The metal frame portion is provided with a frame-side thermal expansion member in a portion facing the frame-side tight material and the resin face material portion, A fixture characterized in that a recess is provided on the visible surface of the frame body, and the frame-side thermal expansion member is provided in the recess.

5. A fixture described in any one of claims 1 to 4, characterized in that the resin frame portion has a hollow portion, and the front-side thermal expansion member is provided between the hollow portion and the frame-side tight material.

6. The frame body has upper frames at the upper ends of the left and right vertical frames, The fixture according to claim 2 or claim 4, characterized in that the frame-side thermal expansion member is provided at least on the metal frame portion of the vertical frame and extends to a position opposite the metal surface material portion.

7. The building fixture described in claim 3, characterized in that the frame-side thermal expansion members provided on the left and right vertical frames are arranged so that their respective upper ends come into contact with the frame-side thermal expansion members provided on the upper frame.

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