Building materials

Abstract

To improve heat insulation and fire resistance.SOLUTION: A fitting, which includes a frame body 10 and a door body 20 arranged in the frame body 10 in an open / close manner and in which a vertical frame 13 constituting the frame body 10 has a frame body part 13B molded from metal and a doorstop part 13C molded from resin, includes a pedestal member 50 that is molded from a metal separate from the frame body part 13B, that has a viewing plate 53 overlapping the door body 20 in a closed state in the depth direction, and that is supported by the frame body part 13B with the doorstop portion part 13C interposed between the viewing plate 53 and the door body 20, the pedestal member 50 being such that a thermally expandable member 60 is arranged on the depth surface 53a covered by the doorstop portion 13C in a position overlapping with the door body 20 in the closed state in the depth direction.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a fitting in which the frame material constituting the frame body has a metal frame portion molded from metal and a resin frame portion molded from resin. [Background technology]

[0002] Some building materials have a frame body made of a frame material that has a metal frame portion on the outside of the room that is molded from a metal such as an aluminum alloy, and a resin frame portion on the inside of the room that is molded from a resin, taking into consideration thermal insulation properties (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-104971 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of a fixture having the above-mentioned configuration, if it is exposed to high temperatures such as during a fire, the resin frame may melt or burn. As a result, the gap between the door body and the frame is exposed to the outside, which may cause a flame to penetrate from the inside to the outside, which is disadvantageous in terms of fire prevention.

[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-mentioned object, the building fixture of the present invention comprises a frame body and a door body arranged so as to be openable and closable relative to the frame body, and the frame material constituting the frame body is a building fixture having a metal frame portion molded from metal and a resin frame portion molded from resin, and is molded from a metal separate from the metal frame portion and has a visible portion that overlaps in the forward direction with the door body in the closed state, and comprises a base member supported on the metal frame portion with the resin frame portion interposed between the visible portion and the door body, and is characterized in that a thermally expandable member is arranged on the surface of the base member covered by the resin frame portion in a position that overlaps in the forward direction with the door body in the closed state. [Effects of the Invention]

[0007] According to the present invention, a base member is provided so as to overlap the door body in the closed state in the forward direction, and a thermally expandable member is provided on the base member.Therefore, even if the resin frame portion is exposed to high temperatures and melts or burns, the expansion of the thermally expandable member can prevent a situation in which a flame penetration hole is created in the indoor / outdoor direction, thereby making it possible to improve the fire resistance of insulating building materials. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a view of the fitting according to the first embodiment of the present invention as seen from the outside of the 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] FIG. 2 is a cross-sectional view showing the main part of the fitting shown in FIG. [Figure 5] FIG. 2 is a cross-sectional view of a main part showing a modified example of the fitting shown in FIG. [Figure 6] FIG. 10 is a cross-sectional view showing the main parts of a fitting according to a second embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view of a main part showing a modified example of the fitting shown in FIG. 6. 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] (Embodiment 1) 1 to 4 show a fitting according to a first embodiment of the present invention. The fitting illustrated here is used as a front door and comprises a frame 10 and a door element 20 disposed so as to be openable and closable relative to the frame 10. Although not shown in the figures, one side edge of the door element 20 is supported by the frame 10 via a hinge 1, and the door element 20 can be opened toward the outside around a hinge axis extending vertically. The frame 10 is formed by assembling an upper frame 11, a lower frame 12, and left and right vertical frames 13 and 14 around all four sides. Each of the frame members 11, 12, 13, and 14 has a frame main body portion 11B, 12B, 13B, and 14B that is disposed on the outer periphery of the door element 20 when closed, and a door stop portion 11C, 12C, 13C, and 14C that is disposed opposite the surface of the door element 20 that faces the interior of the room. The parts of the doorstops 11C, 12C, 13C, and 14C that face the outside are fitted with a continuous seal material D around all four sides. When the door body 20 is closed against the frame body 10, the seal material D abuts against the peripheral edge of the door body 20, ensuring watertightness and airtightness.

[0011] In this first embodiment, the lower frame 12 is formed by integrally molding the frame body 12B and the doorstop 12C from a metal such as an aluminum alloy. In contrast, the upper frame 11 and the left and right vertical frames 13, 14 are formed by molding the frame body 11B, 13B, 14B from a metal such as an aluminum alloy, while molding the doorstops 11C, 13C, 14C from a resin. The following describes the configuration of the vertical frames 13, 14 in detail, along with an explanation of the features of the present invention. Because the vertical frames 13, 14 are symmetrical to each other, the following explanation focuses on the vertical frame 13, which forms the door end.

[0012] The frame body (metal frame) 13B and the doorstop (resin frame) 13C of the vertical frame 13 are each made of extruded material and formed to have a substantially uniform cross-sectional shape along their entire length. In the illustrated example, the frame body 13B is formed by integrally molding a hollow frame base 31, a connection fin 32 that connects to the doorstop 13C, and a nail fin 33 for fastening to the frame body E. The front surface 31a of the frame base 31 facing the interior of the room is a covered surface facing the frame body E when the vertical frame 13 is attached to the frame body E, and is flat and extends along the front surface. The front surface 31b of the frame base 31 on the inner periphery facing the door body 20 is flat and extends along the front surface. At the intersection of the inner peripheral visible surface 31b of the frame base 31 and the visible surface 31c facing outside the room, a concave step 31d is provided where the smoke deflector 21 of the door body 20 is positioned when the door body 20 is closed. The connection receiving fin portion 32 extends in the visible direction toward the room from the inner peripheral portion of the visible surface 31a of the frame base 31 facing inside the room. The nail fin portion 33 extends in the visible direction toward the room from the protruding corner where the visible surface 31a of the frame base 31 facing inside the room and the visible surface 31e on the outer peripheral side intersect, and then extends so as to protrude toward the outer periphery.

[0013] The doorstop portion 13C of the vertical frame 13 is integrally formed with a doorstop base 41 extending along the front doorway and a connecting fin portion 42 attached to the outer periphery of the doorstop base 41. The connecting fin portion 42 is connected to the frame body 13B with the outer periphery of the connecting fin portion 42 overlapping the inner periphery of the connecting fin portion 32. The doorstop base 41 is hollow and rectangular in cross section, with its dimension in the front doorway longer than in the front doorway. The dimension of the doorstop base 41 along the front doorway is set so that it extends to a position that overlaps the door body 20 in the front doorway when it is closed. The connecting fin portion 42 extends from the outer periphery of the doorstop base 41 toward the outside of the room in the front doorway direction, and has a longer extension length than the connecting fin portion 32 of the frame body 13B. This connecting fin portion 42 is configured so that when it is placed on the visible surface 32a on the inner periphery of the connecting support fin portion 32, the visible surface 42b on the inner periphery is positioned on approximately the same plane as the visible surface 31b on the inner periphery of the frame base portion 31.

[0014] The doorstop portion 13C is also provided with an attachment groove 41a, a bulge 43, and a cover fin 44. The attachment groove 41a is a recess for attaching the aforementioned weatherstripping material D and opens to the inner periphery of the visible surface 41b of the doorstop base 41 facing the outside of the room. The bulge 43 is a hollow rectangular cross-section that protrudes from the outer periphery of the visible surface 41b of the doorstop base 41. When the connecting fin portion 42 is placed on the visible surface 32a of the inner periphery of the connecting support fin portion 32, the bulge 43 protrudes outward beyond the connecting support fin portion 32 and is sized to ensure a gap between the visible surface 43a and the connecting support fin portion 32. The cover fin 44 extends from the inner periphery of the doorstop base 41 toward the room. In this embodiment 1, the visible surface 41b of the doorstop base 41 facing the interior of the room, the visible surface 43b on the outer periphery of the bulge portion 43, and the visible surface 44a on the outer periphery of the cover fin portion 44 become the covering surfaces facing the main body E when the vertical frame 13 is attached to the main body E.

[0015] The vertical frame 13 having the above-described configuration has a separate base member 50 attached to the frame main body 13B, and a thermal expansion member 60 disposed via the base member 50. The base member 50 is a thin plate-like member formed from a metal such as steel or aluminum, and is set so that its longitudinal dimension is approximately the same as that of the vertical frame 13. In this embodiment 1, the base member 50 is provided with a projection plate portion 51, an attachment plate portion 52, and a sight plate portion (sight portion) 53. The projection plate portion 51 is a flat plate-like member having a length greater than the dimension along the projection direction from the sight surface 41b of the doorstop base 41 facing the interior of the room to the extending edge of the connecting fin portion 42 in the doorstop portion 13C. The attachment plate portion 52 and the sight plate portion 53 are flat plate-like members extending in directions away from each other from the end of the projection plate portion 51. The dimensions of the sight plate portion 53 are set so that when the sight plate portion 51 abuts against the bulging portion 43 of the doorstop portion 13C, it can cover almost the entire sight surface 41b facing the interior of the doorstop base 41. In the illustrated example, the base member 50 is attached to the frame main body portion 13B by screwing metal screws 54 into the sight surface 31a of the frame base 31 via the mounting plate portion 52, with the sight plate portion 51 abutting against the bulging portion 43 and the sight plate portion 53 covering the sight surface 41b of the doorstop base 41 facing the interior of the room.

[0016] The thermal expansion member 60 is a non-combustible or flame-retardant fire-resistant member that expands due to heat, and may be, for example, a thermally expandable graphite-containing foam material. In the first embodiment, the thermal expansion member 60 is a strip-shaped member having a certain width, and is continuously and without gaps along the entire longitudinal length of the sighting surface 53a of the sighting plate portion 53 of the base member 50, which faces the outside of the room. In other words, the surface 53a facing the sighting surface 41b of the door stop base 41, which faces the inside of the room, is the surface 53a. In the illustrated example, the thermal expansion member 60 has a width greater than the distance from the sighting surface 31b on the inner periphery of the frame base 31 to the door edge surface 20a of the door body 20. The thermal expansion member 60 is disposed on the base member 50 so as to overlap the gap between the sighting surface 31b on the inner periphery of the frame base 31 and the door edge surface 20a of the door body 20, as well as the door body 20 in the front direction.

[0017] As is clear from the figure, this vertical frame 13 is attached to the main body E with the sight surface 31a facing the interior of the room of the frame base 31 including the mounting plate portion 52 of the base member 50, the sight surface 51a on the outer periphery of the sight plate portion 51 of the base member 50, the sight surface 53b facing the interior of the room of the sight plate portion 53, and the sight surface 44a on the outer periphery of the cover fin portion 44 all facing the main body E.

[0018] In the fittings configured as described above, the top frame 11 and the left and right vertical frames 13, 14 that make up the frame body 10 each have an exterior frame body 13B molded from metal and an interior doorstop 13C molded from resin, providing advantages in terms of thermal insulation. Furthermore, even if the doorstop 13C is exposed to high temperatures, such as during a fire, and melts or burns away, the metal base member 50 maintains its position relative to the frame body 13B. Therefore, the thermally expandable member 60 attached to the base member 50 expands, reliably sealing the gap with the door body 20. This prevents flames from penetrating between the interior and exterior of the building, providing advantages in terms of fire resistance. In addition, the base member 50 is arranged along the covering surfaces of the vertical frame 13, that is, the visible surface 31a of the frame base 31 facing the room, the visible surface 41b of the doorstop base 41 facing the room, the visible surface 43b on the outer periphery of the bulge portion 43, and the visible surface 44a on the outer periphery of the cover fin portion 44, so when the vertical frame 13 is attached to the skeleton E, it is covered by the skeleton E and is not exposed to the outside. The thermally expandable member 60 is also covered by the doorstop base 41 of the doorstop portion 13C and is difficult to see from the outside. Therefore, there is no risk that the base member 50 and the thermally expandable member 60 will impair the appearance quality of the building fixture.

[0019] In the above-described first embodiment, the base member 50 is attached to the frame main body 13B with the mounting plate 52 directly abutting the frame base 31. However, as in the modified example shown in Fig. 5, a heat insulating material 2 may be interposed between the mounting plate 52 and the frame base 31. This modified example prevents the base member 50 from becoming a thermal bridge, which is more advantageous in terms of heat insulation. In the modified example, the same components as those in the first embodiment are designated by the same reference numerals.

[0020] (Embodiment 2) FIG. 6 shows the vertical frame portion of a fixture according to a second embodiment of the present invention. The fixture illustrated here is used as a front door, similar to the first embodiment shown in FIG. 1. Although not explicitly shown in the figure, this second embodiment also uses a lower frame in which the frame body and doorstop are integrally molded from a metal such as an aluminum alloy, while an upper frame and left and right vertical frames are configured with a frame body molded from a metal such as an aluminum alloy and doorstops molded from a resin. Below, the configuration of the vertical frame 113 on the door end side applied to the fixture according to the second embodiment will be described in detail, along with an explanation of the characteristic features of the present invention.

[0021] The metal frame body (metal frame) 113B and the resin doorstop (resin frame) 113C that make up the vertical frame 113 are each extruded members formed to have a substantially uniform cross-sectional shape along their entire length. The frame body 113B of the vertical frame 113 is integrally formed with a hollow frame base 131, a connecting fin 132 and hook 133 that connect to the doorstop 113C, and a nail fin 134 for securing to the main frame. The inner peripheral visible surface 131a of the frame base 131 that faces the door body 20 is flat and extends along the visible direction. The connecting fin 132 extends from approximately the center of the visible surface 131c of the frame base 131 that faces the room in the visible direction toward the room. An engaging claw 132a is provided on the extending edge of the connection receiving fin portion 132 so as to protrude toward the inner periphery. The hook portion 133 extends toward the room from the corner where the visible surface 131c facing the room of the frame base 131 intersects with the visible surface 131a on the inner periphery, and then bends toward the outer periphery. The nail fin portion 134 extends so as to protrude toward the outer periphery from the corner where the visible surface 131c facing the room of the frame base 131 intersects with the visible surface 131d on the outer periphery.

[0022] The doorstop portion 113C of the vertical frame 113 is integrally formed with a connecting portion 141 extending along the front-view direction and a doorstop base 142 extending from the interior portion of the connecting portion 141 in the front-view direction. The exterior portion of the connecting portion 141 is attached between the connecting fin 132 and the hook 133, thereby connecting the connecting portion 141 to the frame body 113B. The dimension of the connecting portion 141 along the front-view direction is set so that, when attached to the frame body 113B, the inner peripheral surface 141a is substantially flush with the inner peripheral surface 131a of the frame base 131. The dimension of the doorstop base 142 along the front-view direction is set so that it extends to a position that overlaps the door body 20 in the front-view direction when the door is closed. The connecting portion 141 and the doorstop base 142 are hollow and communicate with each other. A support wall portion 143 is provided inside the hollow interior of the connecting portion 141. The support wall portion 143 is in the shape of a plate extending along the viewing direction.

[0023] Doorstop portion 113C is also provided with an attachment groove 142a and a cover fin portion 144. The attachment groove 142a is a recess for attaching the weatherstripping material D, and opens to the inner peripheral portion of the facing surface 142b facing the outside of the doorstop base 142. The cover fin portion 144 extends from the inner peripheral portion of the doorstop base 142 in the facing direction toward the inside of the room.

[0024] The vertical frame 113 having the above-described configuration has a base member 150 attached to the hollow interior of the doorstop portion 113C, and a thermal expansion member 160 disposed on the base member 150. The base member 150 is a thin plate-like member formed from a metal such as steel or aluminum, and is set so that its longitudinal dimensions are approximately the same as those of the vertical frame 113. In the second embodiment, the base member 150 includes a projection plate portion 151, an attachment plate portion 152, and a sight plate portion (sight portion) 153. The projection plate portion 151 is a flat plate-like member having a length approximately equal to the dimension along the projection direction from the support wall portion 143 in the hollow interior of the doorstop portion 113C to the portion extending in the sight direction on the indoor side. The attachment plate portion 152 and the sight plate portion 153 are flat plate-like members extending in directions away from each other from the end of the projection plate portion 151. The dimensions of the sight plate 153 are set so that, when the mounting plate 152 is positioned approximately in the center of the support wall 143, it can cover almost the entire surface of the sight surface 142c located on the indoor side within the hollow interior of the doorstop base 142. In the illustrated example, with the sight plate 153 covering almost the entire surface of the sight surface 142c of the doorstop base 142, the base member 150 is attached to the frame main body 113B by threading metal screws 154 into the frame base 131 via the mounting plate 152 and the support wall 143. The thermally expandable member 160 is a non-flammable or flame-retardant fire-resistant member that expands due to heat, and for example, a thermally expandable foam containing graphite can be used. In the second embodiment, a band-shaped thermal expansion member 160 having a certain width is continuously arranged without gaps along the entire length of the longitudinal direction of the sighting surface 153a facing the outside of the room in the sighting plate portion 153 of the base member 150. In the illustrated example, a thermal expansion member 160 having a width greater than the distance from the sighting surface 131a on the inner periphery of the frame base 131 to the door edge surface 20a of the door body 20 is used, and the thermal expansion member 160 is arranged on the base member 150 so as to overlap the gap between the sighting surface 131a on the inner periphery of the frame base 131 and the door edge surface 20a of the door body 20, as well as the door body 20 in the sighting direction.

[0025] In the fittings configured as described above, the vertical frame 113 constituting the frame body 10 has an exterior frame body 113B molded from metal and an interior doorstop 113C molded from resin, providing advantages in terms of thermal insulation. Furthermore, even if the doorstop 113C were to melt or burn due to exposure to high temperatures, such as during a fire, the metal base member 150 would maintain its position relative to the frame body 113B. Therefore, the expansion of the thermally expandable member 160 attached to the base member 150 would reliably seal the gap with the door body 20, preventing the formation of a flame hole between the interior and exterior of the building, providing advantages in terms of fire prevention. Additionally, the base member 150 and the thermally expandable member 160 are located within the hollow interior of the doorstop 113C, preventing them from being exposed to the outside. Therefore, there is no risk that the base member 150 and the thermally expandable member 160 will impair the appearance quality of the fixture. Furthermore, since the doorstop portion 113C molded from resin is interposed between the mounting plate portion 152 of the base member and the frame base portion 131, the base member 150 can be prevented from becoming a thermal bridge, which is more advantageous in terms of heat insulation.

[0026] FIG. 7 shows a modified example of embodiment 2. In this modified example, in addition to the configuration of embodiment 2, an additional thermal expansion member 161 is arranged in the mounting groove 142a. The other configurations are the same as those of embodiment 2. According to this modified example, when the fitting is exposed to high temperatures, the additional thermal expansion member 161 expands in addition to the thermal expansion member 160 arranged inside the hollow, making it possible to more reliably prevent a situation in which a flame penetrates in the indoor and outdoor directions.

[0027] Although the first and second embodiments described above both exemplify fittings used as entrance doors, the present invention can be applied to other fittings as long as the frame members constituting the frame body have a metal frame portion molded from metal and a resin frame portion molded from resin. Furthermore, while the base member and thermal expansion member are provided only on the vertical frame, they may also be applied to the upper frame, or if the lower frame has a metal frame portion and a resin frame portion, they may also be applied to the lower frame. In this case, it is sufficient to provide a base member on any one of the frame members constituting the frame body; it is not necessary to provide base members on two or more frame members.

[0028] In addition, in the above-described first and second embodiments, the thermal expansion member is provided up to a position overlapping the gap between the door body and the frame body in the projection direction, which has the advantage of allowing the gap to be directly blocked by the thermal expansion member. However, it is sufficient that the thermal expansion member is provided at a position overlapping at least the projection direction of the door body in the closed state. Furthermore, the thermal expansion member does not need to be provided in a continuous manner along the length of the frame material, but may be provided in multiple segments that become continuous when expanded. Furthermore, the base member does not need to be continuous along the length of the frame material.

[0029] Furthermore, the specific shapes of the metal frame portion, the specific shapes of the resin frame portion, and the specific shapes of the base member described in the above-mentioned embodiments 1 and 2 are all described for illustrative purposes, and other shapes may also be used.

[0030] As described above, the building fixture of the present invention comprises a frame body and a door body arranged to be openable and closable relative to the frame body, and the frame material constituting the frame body is a building fixture having a metal frame portion molded from metal and a resin frame portion molded from resin, and is molded from a metal separate from the metal frame portion and has a visible portion that overlaps in the forward direction with the door body in the closed state, and comprises a base member supported on the metal frame portion with the resin frame portion interposed between the visible portion and the door body, and is characterized in that a thermally expandable member is arranged on the surface of the base member covered by the resin frame portion in a position that overlaps in the forward direction with the door body in the closed state. According to this invention, a base member is provided so as to overlap the door body in the closed state in the forward direction, and a heat-expanding member is provided on the base member.Therefore, even if the resin frame portion is exposed to high temperatures and melts or burns, the heat-expanding member will expand, preventing a situation in which a flame will penetrate in the indoor or outdoor direction, thereby making it possible to improve the fire resistance of insulating building materials.

[0031] The present invention is also characterized in that, in the above-mentioned building fixture, the thermally expandable member is provided in a portion that extends to the extension of the gap formed between the frame material and the door body. According to this invention, the thermally expandable member expands, thereby making it possible to directly close the gap between the frame and the door.

[0032] The present invention is also characterized in that, in the above-mentioned building fixture, the metal frame portion and the resin frame portion have coated surfaces facing the main body, and the base member is supported by the metal frame portion in a state extending along the coated surface. According to this invention, when the fixture is attached to the building frame, the base member is covered by the building frame, eliminating the concern that the appearance quality of the fixture will be impaired.

[0033] Furthermore, the present invention is characterized in that in the above-mentioned fitting, a heat insulating material separate from the resin frame portion is interposed at the connecting portion between the base member and the metal frame portion. According to this invention, it is possible to prevent the base member from becoming a thermal bridge, which is more advantageous in terms of heat insulation.

[0034] The present invention is also characterized in that, in the above-mentioned building fixture, a hollow portion is provided in the resin frame portion in the part facing the door body in the forward direction, and the base member and the thermally expandable member are arranged inside the hollow portion. According to this invention, the base member is not exposed to the outside, and there is no concern that the appearance quality of the fixture will be impaired.

[0035] Furthermore, the present invention is characterized in that in the above-mentioned fitting, the resin frame portion is interposed at the connecting portion between the base member and the metal frame portion. According to this invention, it is possible to prevent the base member from becoming a thermal bridge, which is more advantageous in terms of heat insulation.

[0036] The present invention is also characterized in that, in the above-mentioned building fixture, the part of the resin frame portion facing the door body is provided with an attachment groove for attaching a tension material, and an additional thermally expandable member is arranged in the attachment groove at a position covered by the tension material. According to this invention, it is possible to more reliably prevent a situation in which the expansion of the additional thermally expandable member causes a flame to penetrate in the indoor and outdoor directions. [Explanation of symbols]

[0037] 2 Heat insulating material, 10 Frame body, 13,113 Vertical frame, 13B,113B Frame body part, 13C,113C Door stop part, 20 Door body, 31a Frame base visible surface (coated surface), 41a,142a Mounting groove, 41b Door stop base visible surface (coated surface), 43b Bulging part visible surface (coated surface), 44a Cover fin part visible surface (coated surface), 50,150 Base member, 53,53a Visible surface, 60,160,161 Thermal expansion member, 153,153a Visible surface, D Tight material, E Body

Claims

1. A frame body and a door body disposed so as to be openable and closable relative to the frame body, The frame material constituting the frame body is a fitting having a metal frame portion formed by metal and a resin frame portion formed by resin, The door frame is made of a metal separate from the metal frame, has a front portion overlapping the door body in a closed state in a front direction, and is supported by the metal frame with the resin frame interposed between the front portion and the door body. A fixture characterized in that a thermally expandable member is arranged on the surface of the base member covered by the resin frame portion in a position that overlaps in the forward direction with the door body in the closed state.

2. 2. The fixture according to claim 1, wherein the thermal expansion member is provided in a portion that is an extension of the gap formed between the frame material and the door body.

3. the metal frame portion and the resin frame portion have a coated surface facing the frame body, The fixture according to claim 1, wherein the base member is supported by the metal frame portion in a state in which it extends along the covering surface.

4. 2. The fixture according to claim 1, wherein a heat insulating material separate from the resin frame portion is interposed at the connecting portion between the base member and the metal frame portion.

5. The resin frame portion has a hollow portion provided in a portion facing the door body in the projection direction, The fixture according to claim 1, wherein the base member and the thermally expandable member are disposed inside the hollow portion.

6. The fixture according to claim 1, wherein the resin frame portion is interposed at the connecting portion between the base member and the metal frame portion.

7. A mounting groove for mounting a seal material is provided in a portion of the resin frame facing the door body, The fixture according to claim 1, characterized in that an additional thermal expansion member is arranged in the mounting groove at a position covered by the tension material.

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