JP3726948B2 - Thermal insulation frame - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat-insulating sash frame and a heat-insulating shoji frame (hereinafter, both frames are referred to as “heat-insulating frames”) in which a covering material having heat insulating properties such as resin and wood is attached to the indoor side of the metal frame material. .
[0002]
[Prior art]
Conventionally, for example, heat insulating frames disclosed in Japanese Patent Application Laid-Open Nos. 10-317831 and 11-107631 are known. However, these are inferior in assembly work due to the structure in which the heat-insulating coating material is fixed to the metal frame material by screwing or caulking in advance, and the assembly workability is poor. It was difficult to separate. In addition, when the temperature difference between indoor and outdoor becomes extremely large in winter and the covering material is thin, for example, from the side wall of the metal frame material constituting the outdoor side surface of the panel mounting groove for mounting the panel to be incorporated on the inner peripheral side The outside air heat is transferred into the panel mounting groove, and the heat is further transferred to the side wall of the covering material that forms the indoor side wall of the panel mounting groove. There was a problem of causing condensation on the side.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to solve these problems, and to provide a heat insulating frame that has good assembly workability, is easy to recycle, and has improved heat insulating properties.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, in claim 1 of the present invention, the horizontal frame material, the eaves frame material connected to the end face in the longitudinal direction of the horizontal frame material, and the heat insulation provided on the indoor side of the horizontal frame material. A horizontal covering material having a heat insulating property provided on the indoor side of the frame material, and the wall covering material covers at least the indoor side of the inner peripheral side surface of the frame material and at least the end face of the horizontal frame material The inner peripheral side wall extending to the connecting portion, and a screw for fixing the heel frame member and the horizontal frame member is inserted through the inner peripheral side wall from the heel frame member and screwed into the horizontal frame member. Is fixed by sandwiching the inner peripheral side wall between the end face of the horizontal frame material and the collar frame material, and the horizontal coating material is engaged with a locking portion provided in the horizontal frame material and is elongated by the collar coating material. Since the movement of the direction is restricted and fixed, the frame can be assembled without fixing the horizontal frame material and the horizontal covering material and the vertical frame material and the vertical covering material in advance. It can be, and is intended to provide a heat-insulating frame can be separated from the transverse frame member and the lateral cover members and the Oyobi vertical frame member and the vertical covering material by removing the framework.
[0005]
[0006]
To achieve the above object, the heat insulating Oite in claim 2 provided with lateral frame members, and vertical frame member which is connected to a longitudinal end surface of the transverse frame members, the indoor side of the lateral frame members of the present invention A horizontal covering material having heat resistance, a heat-resistant covering material provided on the indoor side of the fence frame material, and a panel incorporated on the inner peripheral side of the horizontal frame material and the fence frame material. The frame member has an outdoor side wall that protrudes to the inner peripheral side at the outdoor side position, and the horizontal covering material and the eaves covering material are inner circumferences that cover at least the indoor side of the inner peripheral side surface of the horizontal frame member or the eaves frame member. A panel mounting groove formed by a side wall, an outdoor side covering wall that protrudes from the inner peripheral side wall to the inner peripheral side and covers the indoor side surface of the outdoor side wall, and an indoor side wall that protrudes from the indoor side position of the inner peripheral side wall to the inner peripheral side And the eaves covering material extends the inner peripheral side wall to at least the connecting portion with the end face of the horizontal frame material, A screw for fixing the horizontal frame member is inserted into the horizontal frame member through the inner peripheral side wall of the heel frame member, and the heel coating material sandwiches the inner peripheral side wall between the end surface of the horizontal frame member and the heel frame member. The horizontal covering is engaged with the locking portion provided on the horizontal frame and the movement in the longitudinal direction is restricted and fixed by the eaves covering. It is possible to form a frame without fixing the covering material and the frame material and the collar covering material in advance, and by removing the frame, the frame material and the horizontal coating material and the frame material and the collar coating material It is an object of the present invention to provide a heat insulating frame that can be separated and does not transmit outside air heat to the panel mounting groove.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the Example at the time of implementing the heat insulation frame 1 of this invention by the single-opening-Fix continuous window heat insulation sash is described based on drawing. FIG. 1 shows a heat-insulating sash frame 1a of a heat-insulating frame 1 according to an embodiment of the present invention and a heat-insulating single-opening shoji frame 1a according to an embodiment of the present invention incorporated into the heat-insulating sash frame 1a and the heat-insulated sash frame 1a according to the present invention. The cross-sectional view of the heat insulation Fix shoji frame 1c which concerns on implementation is shown. 2 shows a cross-sectional view of the heat-insulating sash frame 1a and the heat-insulating single-opening shoji frame 1b, and FIG. 3 shows a cross-sectional view of the heat-insulating sash frame 1a and the heat-insulating Fix shoji frame 1c. In addition, since this embodiment is a continuous window sash, a vertical material is fitted in the middle of the heat insulating sash frame 1a in the lateral direction, and one of the eaves frames is a vertical material in the heat insulating sash frame 1a and the heat insulating Fix shoji frame 1c. However, the idea of the present invention is the same for both the eaves frame material and the eaves material, and in the description of the embodiments of the present invention, the eaves material is also described as an eave frame material.
[0008]
The heat insulating sash frame 1a is composed of a horizontal frame material 2a using a metal profile and a collar frame material 3a, and a horizontal coating material 4a and a collar coating material 5a formed of a heat-insulating resin material. The eaves frame material 3a includes an outdoor side wall 10a that protrudes to the outer peripheral side at the outdoor side position, and a detent locking portion 17a for pinching and fixing the outdoor side end of the eaves covering material 5a on the inner peripheral side of the outdoor side. And a temporary fixing locking portion 18a for receiving the outer peripheral side end portion of the eaves covering material 5a on the indoor outer periphery side of the eaves frame material 3a. The lateral frame member 2a has an outdoor side wall 10a that protrudes to the outer peripheral side at the outdoor side position, and a locking stopper 17a for pinching and fixing the outdoor side end portion of the lateral covering member 4a on the inner peripheral side of the outdoor side. And a temporary fixing latch 18a for receiving the outer peripheral end of the lateral covering material 4a on the inner peripheral side of the indoor side, and an inner peripheral side of the temporary fixing latch 18a on the indoor side end. It has a temporary fixing locking groove 19a that is folded back so as to squeeze the outer peripheral side end of the lateral covering material 4a, and a tapping hole 15a. The eaves covering material 5a is located slightly on the inner side wall 12a, the indoor side wall 13a, and the inner side wall 12a, protrudes toward the outer circumference side, and protrudes into contact with the temporary fixing locking portion 18a of the eaves frame material 3a. The lateral covering material 4a is located slightly on the inner side of the inner peripheral side wall 12a, the indoor side wall 13a, and the inner peripheral side wall 12a, protrudes toward the outer peripheral side, and is brought into contact with the temporary fixing locking portion 18a of the horizontal frame member 2a. For this purpose, it has a temporary fixing latch 20a and a screw hole 16a.
[0009]
The notch processing and drilling processing of the end portion and the intermediate portion for assembling these members as a frame are individually applied to each member and supplied to the assembly process. The horizontal frame member 2a and the horizontal covering member 4a are fitted together with the outer end of the horizontal covering member 4a on the locking stopper 17a of the horizontal frame member 2a before assembling the frame, and at the same time the outer periphery of the horizontal covering member 4a. The temporary fixing latching strip 20a protruding to the side is fitted into the temporary fixing latching groove 19a of the horizontal frame member 2a to be temporarily fixed. The heel frame material 3a and the heel cover material 5a are temporarily fixed so that the front end portion of the heel cover material 5a is fitted to the detachment locking portion 17a of the heel frame material 3a and simultaneously protrudes to the outer peripheral side of the heel cover material 5a. The locking strip 20a is brought into contact with the temporary fixing locking portion 18a of the frame frame material 3a, and the fixing screw 6a for fixing the heat insulating sash frame 1a for assembly of the frame body is provided with the frame frame material 3a and the frame coating material. By being inserted into screw holes provided in 5a, it is temporarily fixed integrally.
[0010]
The heat-insulating sash frame 1a sandwiches both longitudinal end surfaces of the lateral frame member 2a temporarily secured with the lateral covering material 4a with the inner peripheral surface of the longitudinal end portion of the collar frame material 3a temporarily secured with the collar covering material 5a. Further, the fixing screw 6a for temporarily fixing the collar frame material 3a and the collar covering material 5a is screwed into a tapping hole 15a provided in the horizontal frame material 2a and fixed by tightening. Yes, the eaves covering material 5a is fixed in a state where both ends in the longitudinal direction of the inner peripheral side wall 12a are sandwiched between the inner peripheral surface of the eaves frame material 3a and the end surface of the horizontal frame material 2a, and at the same time, the horizontal covering material 4a Is fixed by assembling the both ends in the longitudinal direction sandwiched between the side cover members 5a in the state where the outdoor side end portions are fitted in the temporary fixing locking portions 17a of the horizontal frame member 2a. Transversely covered through the screw holes provided in the covering material 5a It is fixed by screwing the fixing screws into screw holes 16a of 4a, at first those to be formed as a frame of the piece.
[0011]
The heat-insulating side-opening shoji frame 1b is composed of a horizontal frame material 2b and a collar frame material 3b using a metal profile, and a horizontal coating material 4b and a collar coating material 5b formed of a resin material having heat insulation properties. Yes. The fence frame material 3b includes an outdoor side wall 10b that protrudes to the inner peripheral side at the outdoor side position, a slip-off locking portion 17b for pinching and fixing the outdoor side cover wall 11b of the fence cover material 5b, and the fence cover material 5b. A temporary locking latch portion 18b for receiving the outdoor side end portion of the outer peripheral side wall 12d. The horizontal frame member 2b includes an outdoor side wall 10b that protrudes to the inner peripheral side at the outdoor side position, a locking stopper 17b for pinching and fixing the outdoor side covering wall 11b of the horizontal covering member 4b, and a lateral covering member 4b. It has a temporary fixing locking portion 18b for receiving the outdoor side end portion of the outer peripheral side wall 12d, and a tapping hole 15b. The covering material 5b includes an inner peripheral side wall 12b, an indoor side wall 13b, an outer peripheral side wall 12d, an outdoor side covering wall 11b that protrudes toward the inner peripheral side at an outdoor side end of the inner peripheral side wall 12b, an inner peripheral side wall 12b, It has a panel attachment groove 14b formed at the inner peripheral side portion of the outdoor side covering wall 11b and the indoor side wall 13b, and the lateral covering material 4b includes an inner peripheral side wall 12b, an indoor side wall 13b, and an outer peripheral side wall 12d. The outdoor side covering wall 11b protruding to the inner peripheral side at the outdoor side end of the inner peripheral side wall 12b, and the panel mounting groove formed by the inner peripheral side part of the inner peripheral side wall 12b, the outdoor side covering wall 11b and the indoor side wall 13b 14b and a screw hole 16b.
[0012]
Before assembling the frame body, the horizontal frame member 2b and the horizontal covering member 4b engage the outdoor covering wall 11b of the horizontal covering member 4b with the detachment locking portion 17b of the horizontal frame member 2b. The outdoor side end of the outer peripheral side wall 12d is temporarily fixed substantially integrally by being locked to the temporary fixing locking portion 18b of the horizontal frame member 2b. Before assembling the frame body, the fence frame material 3b and the collar cover material 5b engage the outdoor side coating wall 11b of the collar cover material 5b with the detachment locking portion 17b of the collar frame material 3b. Fixing screw for fixing the frame body in preparation for the assembly of the frame body, which is temporarily fixed substantially integrally by locking the outdoor side end portion of the outer peripheral side wall 12d to the temporary lock locking portion 18b of the eaves frame material 3b. By inserting 6b through screw holes provided in the heel frame material 3b and the heel cover material 5b, the heat insulating single-opening shoji frame 1b is used for assembly.
[0013]
The heat-insulating side-opening shoji frame 1b has both longitudinal end faces of the lateral frame member 2b temporarily secured to the lateral covering material 4b, and the inner peripheral surface of the longitudinal end portion of the collar frame material 3b temporarily secured to the collar covering material 5b. The panel 9b is inserted before being clamped and fixed in place and fixed, and then a fixing screw 6b for temporarily fixing the collar frame material 3b and the collar covering material 5b is provided on the horizontal frame material 2b. The panel 9b is formed as an integral frame only after being fixed by being screwed into the hole 15b, and the panel 9b is formed by connecting the outdoor side gasket 7b and the indoor side gasket 8b to the inner peripheral side end of the panel mounting groove 14b and the panel. It is fixed by inserting between 9b. At this time, the inner peripheral side wall 12b of the eaves covering material 5b is fixed in a state where both ends in the longitudinal direction are sandwiched between the inner peripheral surface of the eaves frame material 3b and the end surface of the horizontal frame material 2b, and at the same time the horizontal covering material 4b. Is fixed by assembling the both ends in the longitudinal direction sandwiched between the side covering members 5b on both sides in a state where the outdoor side ends are fitted into the temporary fixing engaging portions 17b of the horizontal frame member 2b. By inserting a screw hole provided in the covering material 5b and screwing a fixing screw into the screw hole 16b of the lateral covering material 4b, the frame body is more firmly fixed.
[0014]
The heat-insulating Fix shoji frame 1c is composed of a horizontal frame member 2a using a metal shape member and a collar frame material 3a, a horizontal coating material 4a formed of a resin material having thermal insulation properties, a collar coating material 5a, and a panel 9c. Yes. The configuration of each of the horizontal frame material 2a, the eaves frame material 3a, the horizontal covering material 4a, and the eaves covering material 5a is exactly the same as the configuration described in the heat-insulating sash frame 1a, and is omitted. The panel mounting groove 14c includes an inner peripheral side wall 12a that is a constituent part of the horizontal covering material 4a and the eaves covering material 5a, an indoor side wall 13a that is a constituent part of the horizontal covering material 4a and the eaves covering material 5a, and the eaves frame material 3a. An outdoor covering wall 11c of a covering material having a heat insulating property bonded in advance to an indoor side of an edge material (outdoor side wall 10c) attached to the outdoor side, and an edge material attached to the outdoor side of the lateral frame member 2a (outdoor The side wall 10c) is composed of an outdoor-side covering wall 11c and an inner-side covering wall 12c made of a heat-insulating covering material bonded in advance to the indoor side and the inner peripheral side of the side wall 10c).
[0015]
The heat-insulating Fix shoji frame 1c has the same frame procedure and configuration as the heat-insulating sash frame 1a with the horizontal frame material 2a, the horizontal covering material 4a, the eaves frame material 3a, and the eaves covering material 5a. The panel 9c is inserted so that the indoor side surface comes into contact with the indoor side gasket 8c. And the outdoor side gasket 7c is engage | inserted by the inner peripheral side edge part of the pushing edge material (outdoor side wall 10c), and is fixing the panel 9c.
[0016]
As described above with reference to FIGS. 1 to 3, the heat insulating frame 1 (1 a, 1 b, 1 c) of the present invention includes the horizontal frame member (2 a, 2 b, 2 a) and the horizontal frame member (2 a, 2 b, 2 a). The frame material (3a, 3b, 3a) connected to the end surface in the longitudinal direction of the frame and the horizontal covering material (4a, 4b, 4a) having heat insulation provided on the indoor side of the horizontal frame material (2a, 2b, 2a) And cocoon covering materials (5a, 5b, 5a) having heat insulation provided on the indoor side of the cocoon frame materials (3a, 3b, 3a), and the cocoon covering materials (5a, 5b, 5a) (3a, 3b, 3a) having at least an inner peripheral side wall (12a, 12b, 12a) that covers at least the indoor side of the inner peripheral side surface and extends to at least the connecting portion with the end face of the lateral frame member (2a, 2b, 2a) ing. Then, the eaves frame members (3a, 3b, 3a) are inserted through the tapping holes (15a, 15b, 15a) of the horizontal frame members (2a, 2b, 2a). The fixing screws (6a, 6b, 6a) for fixing the frame member and the horizontal frame members (2a, 2b, 2a) are inserted through the covering material (5a, 5b, 5a), and the covering material (5a, 5b, 5a) Inner peripheral side walls (12a, 12b, 12a) are sandwiched and fixed between the end faces of the horizontal frame members (2a, 2b, 2a) and the collar frame members (3a, 3b, 3a). The lateral covering materials (4a, 4b, 4a) are provided with the locking stoppers (17a, 17b, 17a) and the temporary locking grooves (19a, 19b, 19a) provided on the horizontal frame members (2a, 2b, 2a). ) And the movement in the longitudinal direction is restricted by the eaves covering material (5a, 5b, 5a). By adopting such a simple structure, the horizontal frame material (2a, 2b, 2a) and the horizontal coating material (4a, 4b, 4a), and the eaves frame material (3a, 3b, 3a) and the eaves coating The material (5a, 5b, 5a) is preliminarily combined and integrated in advance using a fixing means such as mechanical fitting such as caulking or screwing, for example. It is excellent in workability, and on the contrary, it can be easily separated even when it is disassembled by reforming, etc., so it is excellent in recyclability.
[0017]
Furthermore, in the heat insulation frame 1 (1b, 1c) of this invention, the heat insulation provided in the indoor side of the outdoor side wall (10b, 10c) of the horizontal frame material (2b, 2a) and the eaves frame material (3b, 3a) is provided. The outer covering wall (11b, 11c) and the lateral frame member (2b, 2a) covering the indoor side surface of the outdoor side wall (10b, 10c) on the horizontal covering material (4b, 4a) and the eaves covering material (5b, 5a). ) And the inner side wall (12b, 12a and 12c) and the indoor side wall (13b, 13a) covering at least the indoor side of the inner side surface of the frame member (3b, 3a), and the panel mounting groove (14b, 14c), even when the temperature difference between the indoor and the outdoor becomes remarkably large, directly from the outdoor side walls (10b, 10c) of the horizontal frame members (2b, 2a) and the eaves frame members (3b, 3a) Outside air heat in the panel mounting grooves (14b, 14c) It is no longer transmitted and can solve the problems of the conventional methods that cause condensation on the indoor side surfaces of the horizontal covering material (4b, 4a) and the eaves covering material (5b, 5a) It is also possible to make the covering material thinner.
[0018]
The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the spirit of the invention. For example, the heat insulating frame 1 may be a sliding shoji frame or a double-opening shoji frame, and the frame type is not limited. The material of the horizontal frame members (2a, 2b) and the eaves frame members (3a, 3b) may be steel as long as it is a metal, and is not limited. The material of the lateral covering materials (4a, 4b) and the eaves covering materials (5a, 5b) may be wood or the like in addition to the resin as long as they have heat insulation properties, and are not limited. The outdoor side gaskets (7b, 7c) and the indoor side gaskets (8b, 8c) are not limited to those made of a soft resin material as a whole, but are made by simultaneous integral extrusion molding of a hard resin material and a soft resin material. There may be. Further, the outdoor side gaskets (7b, 7c) and the indoor side gaskets (8b, 8c) may be integrally formed glazing channels. The horizontal covering material (4a, 4b) and the eaves covering material (5a, 5b) only cover at least the indoor side and the indoor side surface of the inner peripheral side surface of the horizontal frame material (2a, 2b) and the eaves frame material (3a, 3b). Instead, the entire inner surface of the inner peripheral side surface in the indoor side direction, the outdoor side surface, or the outer peripheral side surface may be covered.
[0019]
【The invention's effect】
As described above, according to the invention described in claim 1, the step of fixing the horizontal covering material and the scissor covering material to the horizontal frame material and the scissor frame material in advance by means such as screwing or caulking. Is excellent in assembling workability of the heat insulating sash frame, and the frame material and the covering material can be separated by removing the frame, so that recycling is easy. According to the second aspect of the present invention, there is no need for a step of fixing the horizontal and vertical frame material and the horizontal and vertical frame covering material in advance by means such as screwing or caulking, and the horizontal and vertical frame material is indoors. The panel mounting groove is made of heat-insulating coating material that covers the side surfaces, eliminating the entry and exit of outside air heat into the panel mounting groove from the side and wall frame materials, making it easy to assemble and easy to recycle. In addition, even if the heat insulating performance is further improved and the heat insulating covering material is thin, no condensation occurs on the indoor side of the panel mounting portion.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a single door-Fix continuous window heat insulating sash according to an embodiment of the present invention as viewed from the indoor side.
FIG. 2 is a cross-sectional view of the single window portion shown in FIG.
FIG. 3 is a cross-sectional view of the Fix window portion of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insulation frame 1a Insulation sash frame 1b Insulation sash frame 1c Insulation Fix sash frame 2a Insulation sash frame, horizontal frame material 2b of insulation fold shoji frame 3b Insulation sash frame, insulation sash frame 1a竪 frame material 3b 断 熱 frame material 4a of heat insulating sash frame, heat insulating sash frame, horizontal covering material 4a of heat insulating fold shoji frame, horizontal covering material 5a of heat insulating sash frame, 竪 sash frame, heat insulating sash frame 5b Heat-insulating single-sliding frame frame covering material 6a Insulating sash frame, fixing screw for heat-insulating Fix shoji frame 6b Insulating single-opening screen frame fixing screw 7b Insulating single-sliding door outdoor gasket 7c Insulating Fix shoji outdoor side gasket 8b Indoor side gasket 8c for single-opening shojis Indoor gasket 9b for heat-insulating Fix shojis Panel 9c for heat-insulating side-opening shojis panel 10a for heat-insulating Fix shojis Outdoor side wall 10c insulation Fix sash frame outdoor sidewall of the vertical of the outdoor sidewall 10b adiabatic piece open sash frame and the transverse frame members (ledge member)
11b Outdoor side covering wall 11c of heat-insulating single-sliding shoji frame Outdoor-side covering wall 12a formed by covering material of edge insulating material of heat-insulating Fix shingling frame Inner peripheral side wall 12b of heat-insulating sash frame Inner peripheral side wall 12c of inner cover side wall 12c formed by the covering material of the insulating material of the heat insulating Fix shoji frame The outer peripheral side wall 13a of the heat insulating single-opening shoji frame and the outer peripheral side wall 13a of the heat insulating sash frame Indoor side wall 13b of heat insulation single-opening shoji frame and indoor side wall 13c of horizontal covering material Indoor side wall 14b of heat-insulating Fix shoji frame and indoor side wall 14b of heat-insulating single-opening shoji panel mounting groove 14c 15a Tapping hole 15b of heat insulating sash frame, horizontal frame material of heat insulating Fix shoji frame 15b Tapping hole 16b of heat insulating sash frame, heat insulating Fix shoji frame Screw hole 16b of covering material Screw hole 17a of horizontal covering material of heat-insulating single-opening shoji frame Heat insulating sash frame, hook of heat-insulating Fix shoji frame and detent locking portion 17b of heat-insulating single-opening shoji frame Detachment locking part 18a Heat-insulating sash frame, temporary fixing locking part 18b of heat-insulating Fix sash frame frame Temporary fixing locking part 19a of heat-insulating single-sliding sash frame material Temporary locking engagement groove 19b of the horizontal frame material Temporary locking engagement groove 20a of the horizontal frame material of the heat-insulating single-opening shoji frame Temporary locking engagement strip of the horizontal covering material of the heat-insulating sash frame and heat-insulating Fix shoji frame

Claims (2)

  The horizontal frame material, the frame material connected to the end face in the longitudinal direction of the horizontal frame material, the horizontal covering material having heat insulation provided on the indoor side of the horizontal frame material, and the heat insulation provided on the indoor side of the frame material The heel covering material has an inner peripheral side wall that covers at least the indoor side of the inner peripheral side surface of the heel frame member and extends to at least a connecting portion with the end face of the horizontal frame member, A screw for fixing the frame and the horizontal frame member is inserted into the horizontal frame member through the inner peripheral side wall from the collar frame member, and the inner peripheral side wall is interposed between the end surface of the horizontal frame member and the collar frame member. Insulation, characterized in that the lateral covering material is fixed by being engaged with a locking portion provided in the lateral frame material and the movement in the longitudinal direction is restricted by the collar covering material. frame.   The horizontal frame material, the frame material connected to the end face in the longitudinal direction of the horizontal frame material, the horizontal covering material having heat insulation provided on the indoor side of the horizontal frame material, and the heat insulation provided on the indoor side of the frame material And a frame incorporated on the inner peripheral side of the horizontal frame material and the vertical frame material, the horizontal frame material and the vertical frame material have an outdoor side wall protruding to the inner peripheral side at the outdoor side position. The horizontal covering material and the eaves covering material include an inner peripheral side wall that covers at least the indoor side of the inner peripheral side surface of the horizontal frame member or the eaves frame material, and covers the indoor side surface of the outdoor side wall that protrudes from the inner peripheral side wall to the inner peripheral side. And a panel mounting groove formed by the indoor side wall protruding from the indoor side position of the inner peripheral side wall to the inner peripheral side, and the eaves covering material has at least the horizontal frame member on the inner peripheral side wall. The screw that extends to the connecting portion with the end face of the frame, and the screws that fix the frame frame material and the horizontal frame material pass through the inner peripheral side wall from the frame frame material The heel covering material is fixed by sandwiching the inner peripheral side wall between the end face of the horizontal frame material and the heel frame material, and the horizontal covering material is attached to a locking portion provided on the horizontal frame material. A heat insulating frame that is engaged and fixed so that movement in the longitudinal direction is restricted by the covering material.

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