Opening device

The opening device improves workability by using a bracket and fastener system that allows for easy and secure installation, addressing the need for improved construction ease in building openings.

JP7824206B2Active Publication Date: 2026-03-04SANKYO TATEYAMA INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-12-09
Publication Date
2026-03-04

AI Technical Summary

Technical Problem

There is a demand for improved workability in opening devices placed in building openings.

Method used

An opening device comprising a frame material, a fastener fixed to the building opening, and a bracket attached to the frame material, with a base member and an attachment member that engage slidably along the frame's longitudinal direction, allowing for easy installation and secure fixation.

Benefits of technology

Enhances the ease and reliability of installing the opening device by eliminating the need for complex fitting processes and ensuring stable, secure attachment without the risk of detachment.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide an opening device placed in an opening of a building capable of improving workability.SOLUTION: The opening device includes: a frame member; a fastener that is fixed to an opening of a building; and a bracket that is attached to the outer periphery of the frame member. The fastener has a base member and an attachment member. The base member has a base part that is fixed to the inner periphery of a building opening with screws in the inner and outer periphery direction, and a connecting part extending inward from the base portion. The attachment member is slid along the longitudinal direction of the frame member and engaged with the connection part of the base member, and is screw-fixed in the prospective direction. and in the state where it is fixed to the base member, the attachment member is engaged with the bracket in the prospective direction.SELECTED DRAWING: Figure 6
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Description

[Technical Field]

[0001] The present invention relates to an opening device to be placed in an opening in a building. [Background technology]

[0002] BACKGROUND ART Conventionally, opening devices that are placed in openings in buildings are known. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-223073 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for improved workability for opening devices to be placed in openings of buildings.

[0005] The present invention aims to improve the workability of an opening device to be placed in an opening of a building. [Means for solving the problem]

[0006] One embodiment is an opening device comprising a frame material, a fastener fixed to an opening in a building, and a bracket attached to the outer periphery of the frame material, the fastener having a base member and an attachment member, the base member having a base portion fixed to the inner surface of the opening in the building with screws in the inner and outer periphery directions, and a connecting portion extending in the inner periphery direction from the base portion, the attachment member slidingly engaging with the connecting portion of the base member along the longitudinal direction of the frame material, and fixed with screws in the prospective direction, and when fixed to the base member, engaging with the bracket in the prospective direction. [Effects of the Invention]

[0007] According to this embodiment, it is possible to improve the workability of the opening device to be placed in the opening of a building. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a longitudinal cross-sectional view of the opening device according to the embodiment. [Figure 2] 1 is a cross-sectional view of an opening device according to an embodiment. [Figure 3] 1A and 1B are diagrams of an upper frame portion of an opening device according to an embodiment, in which (a) is a vertical cross-sectional view and (b) is a partially enlarged view seen from the indoor side. [Figure 4] 10A and 10B are component diagrams of the upper frame portion of the opening device of the embodiment, in which (a) is an exploded view of the fastener, (b) is an exploded view of the bracket, and (c) is a cross-sectional view of the upper frame. [Figure 5] 10A and 10B are diagrams for explaining the construction of the opening device of the embodiment, and are vertical cross-sectional views for explaining the process of attaching a bracket to an upper frame. [Figure 6] 10A and 10B are diagrams for explaining the installation of an opening device of an embodiment, in which (a) and (b) are longitudinal cross-sectional views explaining the process of attaching a fastener to an opening in a building, and (c) is an enlarged view of a portion viewed from the indoor side. [Figure 7] 1A and 1B are diagrams for explaining the construction of the opening device of the embodiment, and are vertical cross-sectional views for explaining the process of attaching a frame body to an opening in a building. [Figure 8] 1A and 1B are diagrams for explaining the construction of the opening device of the embodiment, and are vertical cross-sectional views for explaining the process of attaching a frame body to an opening in a building. [Figure 9] 1 is a schematic diagram of an opening device according to an embodiment, viewed from the indoor side. FIG. [Figure 10] 10A and 10B are views of an upper frame portion of an opening device according to another embodiment, in which (a) is a vertical cross-sectional view and (b) is a partially enlarged view seen from the indoor side. [Figure 11] FIG. 2 is a diagram of a lower frame portion of the opening device according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] As an example of an opening device of the embodiment, we will explain it with reference to the drawings using an example of a sliding window in which inner and outer shoji screens 20, 30 are arranged freely sliding on the inner periphery of a frame body 10 fixed to an opening in a building.

[0010] As shown in Figures 1 and 2, the sliding window of this embodiment is fixed to an opening in a building by engaging a bracket 5 fixed to the outer periphery of the frame materials (upper frame 11, lower frame 12, and left and right vertical frames 13, 13) that make up the frame body 10 with a fastener 6 fixed to the inner surface A of the opening in the building.

[0011] Although the brackets 5 and fasteners 6 that secure each frame material are different from the brackets 5 and fasteners 6 that secure the lower frame 12 in accordance with the shape of the outer periphery of the lower frame 12 and the shape of the opening, they basically have the same structure. Therefore, in the following explanation, the structure for securing the frame materials using the brackets 5 and fasteners 6 will be explained mainly with reference to the structure for securing the upper frame 11.

[0012] The upper frame 11 that constitutes the frame body 10 is made of a metal material such as an aluminum alloy, and as shown in Figure 4(c), has a projected wall portion 11a that forms the inner surface of the upper frame 11, an indoor side wall portion 11b that is continuous with the indoor side of the projected wall portion 11a, and an outdoor side wall portion 11c that is continuous with the outdoor side of the projected wall portion 11a.

[0013] The upper frame 11 has an engagement piece 11d that bends outdoors at the upper end of the indoor side wall portion 11b, and an engagement piece 11e that protrudes indoors at the same height as the engagement piece 11d on the indoor side wall portion 11b on the indoor side surface of the outdoor side wall portion 11c. The upper frame 11 has an outdoor side wall portion 11c that extends above the engaging piece 11e, and is bent toward the indoor side and then bent upward to have an attachment portion 11f at its upper end.

[0014] -bracket- As shown in Figures 3 and 4(b), the bracket 5 of this embodiment has a front-attached member 51 arranged above (on the outer periphery) the outdoor side (one side in the forward direction) of the upper frame 11, and a rear-attached member 52 arranged above (on the outer periphery) the indoor side (the other side in the forward direction) of the upper frame 11, and by connecting the front-attached member 51 and the rear-attached member 52 with a screw (fixing means) b2, a bracket 5 having an insertion groove 5a on the upper side is formed.

[0015] The front member 51 of the bracket 5 is made of a metal material such as an aluminum alloy and is a member having a predetermined length dimension along the longitudinal direction of the upper frame 11, and has a projected wall portion 51a, a rising wall portion 51b with a hollow cross-section that rises from the outdoor side of the projected wall portion 51a, and an attachment wall portion 51c that rises from the indoor side of the projected wall portion 51a.

[0016] The tip member 51 has an engagement groove 51d that opens to the outdoors on the outdoor side of the upright wall portion 51b, and a protrusion 51h that protrudes to the indoor side on the indoor side outer periphery edge of the upright wall portion 51b. The tip member 51 has an engaging hook portion 51e that protrudes indoors from the indoor side of the mounting wall portion 51c and then bends downward, and an engaging claw 51f that is bent toward the outdoors at the upper end of the mounting wall portion 51c.

[0017] The rear member 52 of the bracket 5 is made of a metal material such as an aluminum alloy and has the same length as the front member 51. It has a projected wall portion 52a, a standing wall portion 52b that extends upward from the indoor end of the projected wall portion 52a and then bends toward the outdoor side, and a projected wall portion 52c that extends upward from the outdoor side of the standing wall portion 52b.

[0018] The attachment member 52 has an engagement groove 52d that opens to the indoor side provided on the indoor side of the upright wall portion 52b, and a protrusion 52h that protrudes to the outdoor side provided on the outer peripheral edge of the visible wall portion 52c. Furthermore, the attachment member 52 is provided with a groove 52g on the outer peripheral surface of the rising wall portion 52b, as required, in which the head of a bolt, a nut, or the like can be accommodated.

[0019] The rear member 52 is provided with an engaging claw 52e formed by bending the outdoor end of the projecting wall portion 52a in the outer circumferential direction (upward), and an engaging hook portion 52f formed by bending the inner circumferential end (lower end) of the projecting wall portion 52c in the inner circumferential direction (downward) beyond the upright wall portion 52b and then inward.

[0020] -Attaching the bracket to the upper frame (frame material)- As shown in FIG. 9, for example, the brackets 5 are attached to the outer periphery of the upper frame 11 at a plurality of positions in the longitudinal direction (view direction) of the upper frame 11.

[0021] When attaching the bracket 5 to the upper frame 11, first, the leading member 51 of the bracket 5 is attached to the upper frame 11. As shown in Figure 5(a), the tip member 51 is positioned at an upper position on the outdoor side of the upper frame 11 so that the engagement groove 51d of the tip member 51 engages with the engagement piece 11e provided on the outdoor side wall portion 11c of the upper frame 11.

[0022] The leading member 51, which is arranged at an upper position on the outdoor side of the upper frame 11, is attached to the upper outdoor side of the upper frame 11 by abutting the outdoor side of the rising wall portion 51b against the indoor side of the mounting portion 11f of the upper frame 11 and fastening it with a screw (fixing means) b1 from the outdoor side of the mounting portion 11f.

[0023] The rear-attaching member 52 is positioned at an upper position on the indoor side of the upper frame 11 at a position in the longitudinal direction of the upper frame 11 where the front-attaching member 51 is not attached, so that the engagement groove 52d provided on the indoor side of the rising wall portion 52b engages with the engagement piece 11d provided on the indoor side wall portion 11b of the upper frame 11.

[0024] The rear-attached member 52, which is located at an upper position on the indoor side of the upper frame 11, is slid in the longitudinal direction of the upper frame 11 with the engagement groove 52d engaged with the engagement piece 11d of the upper frame 11, so that it slides into engagement between the indoor side wall portion 11b (the other side in the forward direction) of the upper frame 11 and the front-attached member 51, as shown in Figure 5(b).

[0025] The rear member 52 that slides between the other side of the upper frame 11 in the projection direction and the front member 51 maintains the engagement piece 11d of the upper frame 11 engaged with the engagement groove 52d, while the engagement claw 52e provided at the outdoor end of the projection wall portion 52a engages with the engagement hook portion 51e of the front member 51, and the engagement claw 51f of the front member 51 engages with the engagement hook portion 52f provided at the inner end (lower end) of the projection wall portion 52c.

[0026] When the rear member 52 is slid and engaged between the indoor side wall portion 11b of the upper frame 11 and the front member 51, it is held in place by its engagement with the front member 51 and with the upper frame 11, and will not come off in the outer circumferential direction. In addition, the configuration for engaging the leading member 51, the trailing member 52, and the upper frame 11 is not limited as long as the trailing member 52 has a cross-sectional shape that will not come off in the inner or outer circumferential direction after slidingly engaging with the leading member 51 on the other side of the upper frame 11 in the forward direction.

[0027] The rear member 52, which is slidably engaged between the indoor side wall portion 11b of the upper frame 11 and the front member 51, is connected to the front member 51 by fastening the rising wall portion 52b and the mounting wall portion 51c of the front member 51 from the indoor side with a screw (fixing means) b2, and a bracket 5 having an insertion groove 5a is attached to the outer periphery of the upper frame 11.

[0028] -fastener- As shown in Figures 3 and 4(a), the fastener 6 of this embodiment has a base member 61 and an attachment member 62, and by connecting the base member 61 and the attachment member 62 with a screw (fixing means) b3, a fastener 6 having an insertion portion 6a on the inner peripheral side is formed.

[0029] The base member 61 of the fastener 6 is made of a metal material such as an aluminum alloy and is a member having a predetermined length dimension along the longitudinal direction of the upper frame 11. It has a flat base portion 61a having a width in the projection direction and a facing wall portion 61b extending in the inward direction from the outdoor side end (one side in the projection direction) of the base portion 61a, and is fixed to the inner surface A of the opening.

[0030] The base member 61 has an engagement groove 61c that opens to the inner periphery (downward) along the outdoor edge of the base portion 61a, and an engagement portion 61d that faces the indoor side (the other side in the viewing direction) at the inner periphery end of the visible wall portion 61b, and a connecting portion 61e is formed by the engagement groove 61c and the engagement portion 61d.

[0031] The mounting member 62 of the fastener 6 is made of a metal material such as an aluminum alloy and has the same length as the base member 61. It has a mounting arm 62a with a rectangular hollow cross section that is long in the inner and outer periphery directions, and a visible wall portion 62b formed by the indoor side of the mounting arm 62a extending in the outer periphery direction.

[0032] The mounting member 62 has an engagement groove 62c on the outer peripheral surface of the mounting arm portion 62a that opens to the outer peripheral side (upward), and an engagement portion 62d facing the outside is provided at the outer peripheral end of the visible wall portion 62b, and a connecting portion 62e is formed by the engagement groove 62c and the engagement portion 62d.

[0033] -Installation of fastener 6 to the opening- As shown in FIG. 9, for example, the fasteners 6 are attached to the inner peripheral surface A of the opening at a plurality of positions in the longitudinal direction (viewing direction) that are the same as the attachment positions of the bracket 5 to the upper frame 11.

[0034] When fastener 6 is attached to an opening, first, base member 61 of fastener 6 is attached to inner peripheral surface A of the opening. As shown in Figure 6(a), the base member 61 is fixed to the inner surface A of the opening by having the base portion 61a abut against the inner surface A of the opening and driving a concrete screw 9 through a washer member 63 from the inner direction perpendicular to the inner surface A.

[0035] The mounting member 62 is positioned at a lateral position in the facing direction of the base member 61 fixed to the inner surface A of the opening, and is slid longitudinally toward the base member 61, so that the connecting portion 62e of the mounting member 62 engages with the connecting portion 61e of the base member 61 from the side.

[0036] When the mounting member 62 is slid and the connecting portion 62e of the mounting member 62 engages with the connecting portion 61e of the base member 61, as shown in Figure 6(b), the visible wall portion 62b of the mounting member 62 overlaps with the visible wall portion 61b of the base member 61, and due to the engagement between the engagement groove 61c of the base member 61 and the engaging portion 62d of the mounting member 62, and the engagement between the engagement portion 61d of the base member 61 and the engaging groove 62c of the mounting member 62, the mounting member 62 is held by the base member 61 and does not come off in the inner circumferential direction. The configuration of the engagement grooves and engagement portions of the base member 61 and the mounting member 62 is not limited as long as they have a cross-sectional shape that prevents the mounting member 62 from coming off in the inner and outer circumferential directions after sliding engagement with the base member 61.

[0037] The mounting member 62 is fixed to the visible wall portion 62b of the mounting member 62 and the visible wall portion 61b of the base member 61 by a screw (fixing means) b3 in the forward direction from the indoor side, thereby restricting the sliding movement of the mounting member 62 and attaching a fastener 6 to the inner surface A of the opening.

[0038] After the fastener 6 has been fixed to the inner surface A of the opening, as shown in Figure 3, a bolt holding member 64 that holds down the head 9a of the concrete screw 9 may be fixed to the washer member 63 arranged between the head 9a of the concrete screw 9 and the base portion 61a when fixing the base member 61 using a screw (fixing means) b5 or the like. By integrating the concrete screw 9 with the base member 61 using the bolt retaining member 64, loosening of the concrete screw 9 due to rattle can be suppressed.

[0039] -Installing window frames to openings- The process of attaching the frame 10 to an opening in a building using the brackets 5 and fasteners 6 will be described below.

[0040] (Step 1) The base member 61 of the fastener 6 is attached to the opening. The base member 61 of the fastener 6 is fixed to the inner peripheral surface A of the opening at a plurality of positions in the longitudinal direction. The details have been shown and explained in the description of the attachment of the fastener 6 to the opening in FIG. 6(a), so the explanation will be omitted here.

[0041] (Step 2) A frame is placed around the inner periphery of the opening. The frame body 10, in which the bracket 5 is fixed to the outer periphery of each frame member, is arranged on the inner periphery of the opening where the base member 61 of the fastener 6 is fixed. The mounting position in the facing direction of the base member 61 fixed to the inner surface A of the opening coincides with the mounting position in the facing direction of the bracket 5 fixed to the frame body 10, so by positioning the frame body 10 on the inner periphery of the opening, the facing position of the bracket 5 and the facing position of the base member 61 of the fastener 6 coincide. As shown in Figure 7(a), the frame body 10 is positioned so that the forward position of the fitting groove 5a of the bracket 5 coincides with the forward position of the connecting portion 61e of the base member 61 (i.e., the fitting portion 6a of the mounting member 62 to be attached later).

[0042] When the frame body is placed on the inner periphery of the opening, as shown in Figure 1, a height-adjustable weight-bearing bolt 80 is placed on the bracket 5 fixed at the longitudinal center position of the lower frame 12, and the frame body is supported while its height position is adjusted.

[0043] (Step 3) The mounting member 62 of the fastener 6 is slidably engaged with the base member 61 and is engaged with the fitting groove 5 a of the bracket 5 . By sliding the mounting member 62 from the longitudinal direction of the upper frame 11 relative to the base member 61 fixed to the inner surface A of the opening, the connecting portion 62e of the mounting member 62 engages with the connecting portion 61e of the base member 61, and the mounting arm portion 62a of the mounting member 62 engages with the inside of the fitting groove 5a of the bracket 5, as shown in Figure 7(b).

[0044] The bracket 5 is provided with protrusions 51h and 52h that protrude close to each other at the open end of the fitting groove 5a, and the dimension between the protrusions 51h and 52h is formed to be approximately the same as the projected dimension of the mounting arm 62a of the fastener 6, so that the mounting member 62 of the fastener 6 engages with the bracket 5 in the projected direction while having a clearance that allows movement in the projected direction.

[0045] As shown in FIG. 3(b), the fastener 6 has a larger width than the width of the bracket 5, and the fastener 6 can be fitted over the entire width of the bracket 5.

[0046] (Step 4) The base member 61 and the attachment member 62 of the fastener 6 are connected. The base member 61 and the mounting member 62 are connected by screwing a screw (fixing means) b3 from the indoor side of the visible wall portion 62b of the mounting member 62 to screw the connecting portion 62e of the mounting member 62 to the connecting portion 61e of the base member 61, as shown in Figure 8(a).

[0047] The above steps 1 to 4 are performed on the lower frame 12 and the left and right vertical frames 13, 13 in the same manner as on the upper frame 11.

[0048] (Step 5) The bracket 5 and the fastener 6 are connected. In the upper frame 11 and the lower frame 12, of the multiple brackets 5 and fasteners 6, for the bracket 5 and fastener 6 located in the center, as shown in Figure 8(b), the bracket 5 and fastener 6 are connected by screwing a screw (fixing means) b4 from the indoor side of the visible wall portion 52c of the bracket 5, thereby fixing the frame body 10 to the opening. The process of attaching the frame body 10 to the opening of the building has been described above.

[0049] -Configuration of the lower frame- The lower inner surface A of the opening may be inclined toward the outside to allow for drainage, as shown in Figure 11, but the fastener 6 of the opening device is fixed to the inner surface A of the opening by driving a concrete screw 9 from the inner direction that is also perpendicular to the lower inner surface A. The mounting member 62 of the fastener 6 fixed to the inner surface A of the opening protrudes at an angle from the inner surface, but the fitting groove 5a of the bracket 5 fixed to the lower frame 12 has protrusions 51h, 52h of the leading member 51 and trailing member 52 provided in the opening portion, so the mounting member 62 can be engaged in the forward direction in an inclined state without rattle.

[0050] Furthermore, the mounting member 62 of the fastener 6 may have a plurality of grooves (serrations) 62f formed on the exterior side of the mounting arm portion 62a aligned in the inner and outer periphery directions. The bracket 5 of the lower frame 12 has a sharp tip on the protrusion 51h of the leading member 51, and the protrusion 51h is positioned so that it is close to or in contact with multiple grooves (serrations) 62f, so that when an external force such as a strong wind is applied, the protrusion 51h of the bracket engages with the serrations, preventing the lower frame 12 from tipping outdoors.

[0051] -Effects of the opening device of this embodiment- In the opening device of this embodiment, the bracket 5 is formed from multiple members, namely, a front-attached member 51 and a rear-attached member 52, and the front-attached member 51 is fixed to the upper frame 11, and the rear-attached member 52 is slidably engaged in the longitudinal direction with respect to the upper frame 11, thereby forming the bracket 5 on the outer peripheral surface of the upper frame 11. Therefore, there is no need to insert and attach the bracket from the longitudinal end of the frame material before construction, and there is no need for special processing to attach the bracket 5 to the frame material, improving construction ease.

[0052] In the opening device of this embodiment, there is no fitting portion 6a when the frame body is placed on the inner periphery of the fastener 6, and the frame body can be supported on the fastener 6 by fixing the fitting portion 6a after the frame body is placed, so there is no need to fit the frame body into the fastener 6 using a buckle or the like.Furthermore, since the fastener 6 can be fixed before the frame body is placed, the gap between the opening and the frame can be reduced, and when fixing the fastener 6 to the inner surface A of the opening, the concrete screw 9 can be driven perpendicular to the inner surface A, so that the concrete screw 9 is less likely to slip when driven in, and the fastener 6 can be installed reliably and easily.

[0053] In the opening device of this embodiment, the fitting portion 6a of the fastener 6 has a hollow shape and a predetermined width in the projection direction, so that fitting into the fitting groove 5a of the bracket 5 is stable and connection by screwing can be easily performed. Furthermore, the opening device of this embodiment has good workability because the connection between the base member 61 of the fastener 6 and the mounting member 62 and the connection between the fastener 6 and the bracket 5 can be safely performed from inside the building.

[0054] As shown in Figure 9, in the opening device of this embodiment, the brackets 5 and fasteners 6 other than those arranged in the center of the upper frame 11 and the lower frame 12 are allowed to shift in the viewing direction, so force is not applied to the brackets 5 and fasteners 6, etc. due to stretching or deformation of the frame body 10, and damage to the opening device can be suppressed.

[0055] -Other embodiments- As shown in Fig. 10, the opening device may be provided with a fall prevention member 8 on the bracket 5 to prevent the frame material from falling toward the interior. Note that the concrete screws 9 are omitted in Fig. 10(a). The anti-slip member 8 of this embodiment is composed of a bolt 81 and a nut 82, and is formed by screwing the bolt 81, with its head 81a abutting against the base member 61 of the fastener 6, into the nut 82, which is placed in the groove portion 52g of the rear member 52 of the bracket 5.

[0056] The contact of the anti-slip member 8 with the base member 61 can be adjusted by rotating the bolt 81. A hole is formed in the bottom of the groove 52g of the bracket 5 to allow the tip of the bolt 81 to escape.

[0057] In the opening device of this embodiment, even if a large external force such as a strong wind acts to push the panel body toward the interior, the head 81a of the bolt 81 of the anti-tip member 8 abuts against and braces the base member 61 of the fastener 6, thereby preventing the frame material from tipping toward the interior.

[0058] In the opening device of this embodiment, only the bracket 5 and fastener 6 arranged in the center of the upper frame 11 and the lower frame 12 are connected by screws (fixing means) b4, but they may also be fixed at positions other than the bracket 5 and fastener 6 arranged in the center in the viewing direction of the upper frame 11 and the lower frame 12.

[0059] The leading member 51 that constitutes the bracket 5 may be provided on either the indoor or outdoor side in the projection direction, as long as the leading member 51 is provided on one of the indoor or outdoor sides and the trailing member 52 is provided on the other of the indoor or outdoor sides.

[0060] The attachment member 62 constituting the fastener 6 may be provided on either the indoor side or the outdoor side of the base member 61. It goes without saying that the above embodiments do not limit the invention described in the claims, but are treated as examples. [Explanation of symbols]

[0061] 11: Top frame 5: Bracket 5a: fitting groove 51: Tip attachment part 52: Aftermarket parts 6: Zipper 6a: fitting part 61: Base member 61a: Base section 61e: Connection part 62: Mounting material 62a: Mounting arm 62e: Connecting part A: Inner surface

Claims

[Claim 1] The structure comprises a frame material, a fastener fixed to an opening in a building, and a bracket attached to the outer periphery of the frame material, The fastener has a base member and an attachment member, The base member has a base portion fixed to the inner peripheral surface of the opening of the building with screws in the inner and outer peripheral directions, and a connecting portion extending in the inner peripheral direction from the base portion, The mounting member slides and engages with the connecting portion of the base member along the longitudinal direction of the frame material, is fixed with a screw in the projection direction, and when fixed to the base member, engages with the bracket in the projection direction, forming an opening device.

Citation Information

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