Opening device

Abstract

To improve the workability of fittings disposed in openings of buildings.SOLUTION: An opening device includes a frame body disposed on an inner circumference of an opening in a reinforced concrete frame, and an attachment device for attaching the frame to the opening in the reinforced concrete frame. The attachment device is composed of an opening-side member fixed to the opening and a frame-side member fixed to the frame. An frame outer circumferential side space is formed between an outer circumference of the frame and the inner circumference of the opening without injecting mortar. On an indoor side of the frame, a tape-shaped airtight material is provided between the frame outer circumferential side space and an indoor space. On an outdoor side of the frame, a seal is formed between the frame and the opening. The frame outer circumferential side space communicates with an outdoor space through an outside air inlet provided closer on an outdoor side than the tape-shaped airtight material to form an equal pressure space.SELECTED DRAWING: Figure 5

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, for example, fittings have been known that fix a frame to an opening in a building using anchors or the like, and many of these fittings are constructed using wet mortar or the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-47503 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for improved workability in opening devices that are placed in openings in 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] The opening device of one embodiment includes a frame body arranged on an inner periphery of an opening in a reinforced concrete skeleton, and a mounting device that mounts the frame body to the opening in the reinforced concrete skeleton, and the mounting device is Inner surface of an opening side member fixed to the frame body; Outer perimeter of a frame outer periphery side space is formed between the outer periphery of the frame body and the inner periphery of the opening without injecting mortar; Mounting device On the indoor side of frame body and opening A tape-like airtight material is provided between the Mounting device On the outdoor side of Frame andThis is an opening device in which the space between the opening and the frame is sealed, and the space on the outer periphery of the frame is connected to the outdoor space via an outside air inlet located outside the room beyond the tape-shaped airtight material, creating an isobaric space. In addition, the opening device of another embodiment includes a frame body arranged on the inner periphery of the opening in the reinforced concrete skeleton, and a mounting device that mounts the frame body to the opening in the reinforced concrete skeleton, Inner surface of an opening side member fixed to the frame body; Outer perimeter of a frame outer periphery side space is formed between the outer periphery of the frame body and the inner periphery of the opening without injecting mortar; Mounting device On the indoor side of frame body and opening A tape-like airtight material is provided between the Mounting device On the outdoor side of Frame and This is an opening device in which the space between the opening and the frame is sealed, and a dry filler material is provided in the space on the outer periphery of the frame. [Effects of the Invention]

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

[0008] [Figure 1] FIG. 2 is an internal view of the opening device of the embodiment, with some components omitted. [Figure 2] 1 is a longitudinal sectional view of an opening device according to a first embodiment. [Figure 3] 1 is a cross-sectional view of an opening device according to a first embodiment. FIG. [Figure 4] FIG. 2 is a vertical cross-sectional view of the upper side portion of the opening device of the first embodiment. [Figure 5] FIG. 2 is a vertical cross-sectional view of a lower side portion of the opening device of the first embodiment. [Figure 6] FIG. 2 is a vertical cross-sectional view of the left vertical side portion of the opening device of the first embodiment. [Figure 7] 10(a) and 10(b) are vertical cross-sectional views of a lower side portion of the opening device according to the embodiment. [Figure 8] FIG. 10 is a vertical cross-sectional view of the upper side portion of the opening device of the second embodiment. [Figure 9] FIG. 10 is a vertical cross-sectional view of a lower side portion of the opening device of the second embodiment. [Figure 10] FIG. 10 is a vertical cross-sectional view of the left vertical side portion of the opening device of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] As shown in Figure 1(a), the opening device of this embodiment is a sliding sash that includes a frame body 1 that is placed on the inner periphery of an opening in a reinforced concrete structure A, and an inner shoji screen 2 and an outer shoji screen 3 that are arranged to slide freely on the inner periphery of the frame body 1. The frame body 1 has an upper frame 11, a lower frame 12, and left and right vertical frames 13, 13, and is made up of frame materials assembled around all four sides, and is attached to an opening in a reinforced concrete structure A by multiple mounting devices 5.

[0010] In the opening device of the embodiment, the upper and lower frames 11, 12 and the left and right vertical frames 13, 13 are each fixed to the respective inner surfaces B1, B2, B3 of the opening in the main body A by three mounting devices 5, and two height adjustment devices 6 are provided between the lower frame 12 and the lower inner surface B2 of the opening in the main body A. The number of mounting devices 5 and height adjustment devices 6 disposed between each frame and each inner peripheral surface of the opening of the body is not limited.

[0011] -First embodiment- The upper frame 11 constituting the frame body 1 of this embodiment is made of a metal material such as an aluminum alloy, and as shown in Figures 2 and 4, has guide portions on the inner periphery for guiding the inner and outer screens 2 and 3, and is fixed to the upper inner periphery B1 of the opening in the main body A by an attachment device 51. A space S1 on the outer periphery side of the frame is formed between the outer periphery of the upper frame 11 and the upper inner periphery B1 of the opening without pouring wet mortar or the like.

[0012] The mounting device 51 is made up of an opening side member 511 fixed to the upper inner peripheral surface B1 of the body A, and a frame side member 512 fixed to the outer periphery of the upper frame 11.

[0013] The opening side member 511 has a rectangular, flat base plate portion 511a that abuts against the upper inner surface B1 of the body A, a plate-shaped connecting arm portion 511b that protrudes from the underside (one surface) of the base plate portion 511a and has a head portion 511c at its lower end, and an attachment portion 511d that is thickly formed on the indoor side of the base plate portion 511a and has a bolt hole that is obliquely provided from the indoor side to the outdoor side.

[0014] The opening side member 511 is fixed to the upper inner circumferential surface B1 by abutting the base plate portion 511a against the upper inner circumferential surface B1 so that the plate-shaped connecting arm portion 511b extends in the finding direction, and driving a bolt b1 from the inside of the room through a bolt hole provided in the mounting portion 511d.

[0015] The frame side member 512 has a projected wall portion 512a having a visibility dimension similar to that of the opening side member 511, locking portions 512b, 512b provided on the indoor and outdoor sides of the projected wall portion 512a, and a pair of inner and outer rising portions 512c, 512c that protrude upward from the top surface of the projected wall portion 512a, and a connecting groove portion 512d extending in the visibility direction is formed by the pair of rising portions 512c, 512c.

[0016] The frame side member 512 is fixed to the upper frame 11 by engaging the indoor and outdoor locking portions 512b, 512b with the indoor and outdoor ends of the upper frame 11, and fastening the indoor locking portion 512b with a fixing means b11 such as a screw, so that the connecting groove portion 512d extends in the finder direction.

[0017] The opening side member 511 fixed to the upper inner surface B1 and the frame side member 512 fixed to the upper frame 11 are connected to the connecting arm portion 511b and the rising portions 512c, 512c by a fixing means b12 such as a bolt inserted from the inside of the room through a screw hole 512e provided in the rising portion 512c, with the connecting arm portion 511b of the opening side member 511 fitted into the connecting groove portion 512d of the frame side member 512.

[0018] An angle member 112 is fixed to the indoor side of the upper frame 11, and an airtight tape (airtight tape material) 71 is provided between the indoor side of the upper frame 11 and the indoor side of the body A. In addition, the upper frame 11 has a mounting member 113 fixed to the exterior side surface for attaching an airtight material, and an airtight material s11 such as a gasket that abuts against the visible surface B11 of the main body A is arranged on the mounting member 113.

[0019] The frame outer periphery side space S1 formed between the outer periphery of the upper frame 11 and the upper inner periphery B1 is airtightly sealed from the indoor space by an airtight tape (tape-shaped airtight material) 71 provided between the indoor side of the upper frame 11 and the indoor side of the main body A, and is airtightly sealed from the outdoor space by an airtight material s11 or sealing provided between the outdoor side of the upper frame 11 and the main body A.

[0020] Appropriate heat insulating material C is placed on the indoor side of the airtight tape 71 that airtightly seals the indoor side of the frame outer periphery side space S1, and interior materials D such as inner wall materials and frame materials are placed on the indoor side.

[0021] In the opening device of this embodiment, the opening of the main body A has a shape with a visible surface B11 that extends downward on the outdoor side of the upper inner surface B1, but the shape of the main body A on which the opening device is installed is not limited in any way, and the airtightness between the frame outer peripheral space S1 and the outdoor space can be achieved in any way, for example, by placing an exterior wall material or the like and abutting the airtight material of the upper frame 11 against the exterior wall material or the like.

[0022] The lower frame 12 constituting the frame body 1 of this embodiment is made of a metal material such as an aluminum alloy, and as shown in Figures 2 and 5, has guide portions on the inner periphery that guide the inner and outer screens 2 and 3, and is fixed to the lower inner periphery B2 of the opening in the main body A by an attachment device 52. A space S2 on the outer periphery side of the frame is formed between the outer periphery of the lower frame 12 and the lower inner periphery B2 of the opening without pouring wet mortar or the like.

[0023] The mounting device 52 is composed of an opening side member 521 fixed to the lower inner peripheral surface B2 of the body A, and a frame side member 522 fixed to the outer periphery of the lower frame 12. The mounting device 52 that fixes the lower frame 12 to the frame A has the same configuration as the mounting device 51 that fixes the upper frame 12, so a detailed description thereof will be omitted here.

[0024] The lower frame 12 has an angle member 122 fixed to the indoor side, and an airtight tape (airtight tape material) 72 is provided between the indoor side of the lower frame 12 and the indoor side of the body A. The frame outer periphery side space S2 formed between the outer periphery of the lower frame 12 and the lower inner periphery B2 is airtightly sealed from the indoor space by an airtight tape (tape-shaped airtight material) 72 provided between the indoor side of the lower frame 12 and the indoor side of the main body A.

[0025] Appropriate heat insulating material C is placed on the indoor side of the airtight tape 72 that airtightly seals the indoor side of the frame outer periphery side space S2, and interior materials D such as inner wall materials and frame materials are placed on the indoor side.

[0026] The lower frame 12 has a drip tray 121 attached to the outside of the room. The drip edge 121 slopes downward from the indoor side to the outdoor side and has a drip edge portion 121a that covers the upper surface of the main body A, an indoor side mounting portion 121b formed by the indoor side end of the drip edge portion 121a bending upward, an outdoor side visible wall 121c formed by the outdoor side end of the drip edge portion 121a bending downward, a bottom wall portion 121d extending from a position below the outdoor side visible wall 121c toward the indoor side, and an outdoor side mounting portion 121e formed by the indoor side end of the bottom wall portion 121d bending downward.

[0027] The drip edge 121 has an indoor mounting portion 121b fixed to the outdoor portion of the lower frame 12 by a fixing means b21 such as a screw, and an outdoor mounting portion 121e fixed to an angle iron 123 fixed to the lower inner surface B2 of the main body A by a fixing means b22 such as a screw, and is attached so as to protrude outdoors from the outdoor end of the main body A, as shown in Figures 2 and 3. In addition, the fixing means b21 for fixing the drain 121 to the lower frame 12 may be used in an appropriate number to fix the drain 121, but it is preferable to fix it at a position different in the viewing direction from the position of the fixing means b23, such as a flat head screw, that fixes the lower frame 12 and the engaging portion 522b of the frame side member 522.

[0028] The fixing points between the bottom frame 12 and the indoor mounting part 121b of the drip edge 121, and the fixing points between the outdoor mounting part 121e of the drip edge 121 and the angle iron 123 are filled with sealing materials s21 and s22, and the space between the bottom frame 12 including the drip edge 121 and the opening of the main body A is sealed on the outdoor side.

[0029] The drainer 121 has an outside air inlet 121f that opens downward at an appropriate location in the viewing direction of the bottom wall portion 121d, and the lower space S22 of the drainer 121 and the frame outer periphery side space S2 between the outer periphery of the lower frame 12 and the lower inner periphery B2 of the opening are equal-pressure spaces that communicate with the outside air.

[0030] Drainage pipes 8 equipped with a backflow prevention function are arranged at appropriate positions in the lower space S22 of the drip tray 121, for example, on the outdoor side of both the left and right ends of the lower space S22, and drain water that has entered the frame outer periphery space S2 and the lower space S22 to the outdoors.

[0031] A water return member 125 is provided inside the drip tray 121 and on the outdoor side of the frame outer periphery side space S2. The water-repellent member 125 is a long member made of a metal material such as an aluminum alloy and arranged longitudinally on the outdoor side of the lower frame 12, and has a visible wall 125a, a water-repellent portion 125b that extends diagonally downward from below the visible wall 125a toward the outdoor side, and end sealing materials 125c, 125c provided on the upper surfaces of the left and right ends of the water-repellent portion 125b.

[0032] As shown in Figures 5 and 6, the end blocking material 125c of the water-repelling member 125 may be provided by fixing a block of resin or the like to the upper surface of the water-repelling portion 125b at the left and right ends of the water-repelling member 125 by adhesive or the like, but it may also be formed in any other way, such as by processing both ends of the water-repelling member 125, and may even be omitted in some cases.

[0033] The water-repellent member 125 is positioned so that the upper part of the visible wall 125a overlaps with the indoor mounting part 121b of the drip edge 121, and is fastened together to the outdoor side of the lower frame 12 by fixing means b21 such as screws. The water return member 125 attached below the drain 121 is positioned so that its left and right ends extend further outward than the outer edges of the left and right vertical frames 13, 13, i.e., toward the main body A, and sealing material s31 is filled between the left and right vertical inner peripheral surfaces B3 and the end blocking material 125c. In addition, the sealing material s31 between the left and right ends of the water-repellent member 125 and the left and right vertical inner peripheral surfaces B3 may be an airtight material such as a rubber fin attached to the left and right ends of the water-repellent member 125, and the sealing may be achieved by abutting the airtight material against the vertical inner peripheral surface B3.

[0034] The left and right vertical frames 13 that make up the frame body 1 in this embodiment are made of a metal material such as aluminum alloy, and as shown in Figures 3 and 6, have receiving portions on the inner periphery that receive the door sills of the inner and outer shoji screens 2 and 3, and are fixed to the vertical inner periphery B3 of the opening in the main body A by an attachment device 53. A space S3 on the outer periphery side of the frame is formed between the outer periphery of the vertical frame 13 and the vertical inner periphery surface B3 of the opening without pouring wet mortar or the like.

[0035] The mounting device 53 is composed of an opening side member 531 fixed to the vertical inner peripheral surface B3 of the body A, and a frame side member 532 fixed to the outer periphery of the vertical frame 13. The left and right vertical frames 13 have the same configuration, so the following description will use the left vertical frame 13. The mounting device 53 that fixes the vertical frame 13 to the frame A has the same configuration as the mounting device 51 that fixes the upper frame 11, so a detailed description will be omitted here.

[0036] An angle member 132 is fixed to the indoor side of the vertical frame 13, and an airtight tape (airtight tape material) 73 is provided between the indoor side of the vertical frame 13 and the indoor side of the body A. In addition, the vertical frame 13 has a mounting member 133 fixed to the exterior side surface to which an airtight material is attached, and an airtight material s32 such as a gasket that abuts against the visible surface B13 of the main body A is arranged on the mounting member 133.

[0037] The frame outer periphery side space S3 formed between the outer periphery of the vertical frame 13 and the upper inner periphery B1 is airtightly separated from the indoor space by an airtight tape (tape-shaped airtight material) 73 provided between the indoor side of the vertical frame 13 and the indoor side of the main body A, and is airtightly separated from the outdoor space by an airtight material s32 provided between the outdoor side of the vertical frame 13 and the main body A.

[0038] Appropriate heat insulating material C is placed on the indoor side of the airtight tape 73 that airtightly seals the indoor side of the frame outer periphery side space S3, and interior materials D such as inner wall materials and frame materials are placed on the indoor side.

[0039] (Installation procedure of the sash according to this embodiment) The procedure for installing the opening device of this embodiment on the inner periphery of an opening in a reinforced concrete structure will be described below. Before the opening device is placed in the opening of the body, the frame side members of the mounting device 5 are fixed to the outer peripheral surface of each frame material, and the height adjustment device 6 is fixed to the lower frame 12. As shown in Figure 7(a), the height adjustment device 6 has a main body 61 fixed to the outer peripheral surface of the lower frame 12, and an adjustment bolt 62 that protrudes from below the main body 61 and can be rotated to adjust the protruding length from the main body 61.

[0040] The opening device to which the frame side member of the mounting device 5 and the height adjustment device 6 are attached is placed on the upper surface of the lower inner surface B2 of the opening, and while holding the opening device, the adjustment bolt 62 of the height adjustment device 6 is rotated to adjust the height position of the opening device.

[0041] The opening device, whose height position is adjusted on the inner periphery of the opening of the body A and placed on the lower inner surface B2, has a frame side member 522 of the mounting device 52 fixed to the outer periphery of the lower frame 12, and the connecting groove portion 522d of the frame side member 522 is exposed.

[0042] The opening side member 521 of the mounting device 52 is placed with the base portion 521a facing downwards at a position adjacent to the left or right of the frame side member 522 fixed to the lower frame 12 on the lower inner surface B2 on which the opening device is placed, and is slid in the viewing direction to insert the connecting arm portion 521b into the connecting groove portion 522d of the frame side member 522.

[0043] After inserting the connecting arm portion 521b of the opening side member 521 into the connecting groove portion 522d of the frame side member 522 fixed to the lower frame 12 and positioning the opening side member 521 in a predetermined position, the opening side member 521 is fixed to the lower inner surface B2 of the body A by driving a bolt b2 from the inside of the room into the bolt hole of the mounting portion 521d of the opening side member 521.

[0044] Thereafter, the connecting groove portion 522d of the frame side member 522 and the connecting arm portion 521b of the opening side member 521 are connected by a fixing means such as a screw. By performing the same process on all of the mounting devices 52 fixed to the lower frame 12, the fixing of the lower frame 12 to the lower inner circumferential surface B2 of the opening is completed.

[0045] The same process as the above-described process for attaching the lower frame 12 to the lower inner peripheral surface B2 is also carried out for the upper frame 11 and the left and right vertical frames 13, thereby completing the fixing of the opening device to the opening of the body A. The order of the above steps for attaching the opening device to the opening of the body is not limited to the above method.

[0046] (Effects of the sash of this embodiment) According to the fixture of this embodiment, the sash is attached to the opening in the main body from the inside of the room using a dry mounting device, which improves workability, and as shown in Figure 1(b), the space between the inside of the frame body 1 and the inside of the opening in the main body A is airtight using airtight tapes 71 to 73, and the space between the outer periphery of the frame body and the inner periphery of the opening is connected to create a space of equal pressure with the outdoor space, which makes it possible to prevent water from entering the room even if there is a defect in the sealing around the window.

[0047] Specifically, when the seal on the outside of the room breaks at the top or vertical sides and water enters the frame outer peripheral space S1, S3, it passes through the frame outer peripheral space S3 on the vertical side, falls under its own weight onto the top surface of the water return member 125, and is guided to the outside of the room, where it can be smoothly drained outside via the drain pipe 8. Furthermore, at the lower side, water that has broken the seal on the outdoor side and entered the frame outer peripheral side space S2 flows over the upper surface of the lower inner peripheral surface B2 and is smoothly drained via the drain pipe 8 to the outside of the room.

[0048] At this time, the water-repelling member 125 is provided on the outdoor side of the space S2 on the outer periphery of the lower frame, so that the water is prevented from being blown into the indoor side. In addition, as shown in Fig. 5, by providing a step B22 on the lower inner periphery B2 of the frame A, the water can be further prevented from entering the indoor side.

[0049] -Second embodiment- The opening device of this embodiment differs from the opening device of the previous embodiment in that the space on the outer periphery of the frame is not made equal pressure to the outside air, but is filled with a dry filler such as a heat insulating material or sound insulating material. The opening device of this embodiment will be described below, but the same components as those in the first embodiment will be given the same reference numerals and detailed description thereof will be omitted.

[0050] As shown in Figure 8, the upper frame portion of the opening device of this embodiment is airtight from the indoor space on the indoor side of the frame outer periphery space S1 by airtight tape 71, and the outdoor side is airtight between the visible surface B11 of the main body A and the outdoor side of the upper frame 11 by backup material and sealing material s11, and the frame outer periphery space S1 is filled with dry filler material F1 such as glass wool.

[0051] As shown in Figure 9, the lower frame portion of the opening device of this embodiment is airtight with the indoor space on the indoor side of the frame outer periphery space S2 by airtight tape 72, and the indoor side of the water-repellent member 125 in the frame outer periphery space S2 is filled with dry filler F2 such as glass wool. The drainer 121 does not have an outside air inlet 121f on the bottom wall 121d.

[0052] As shown in Figure 10, the vertical frame portion of the opening device of this embodiment is airtight from the indoor space on the indoor side of the frame outer periphery space S3 by airtight tape 73, and the outdoor side is airtight by backup material and sealing material s32 provided between the visible surface B13 of the main body A and the outdoor side of the vertical frame 13. A water return member 135 is attached to the outer periphery of the vertical frame 13 on the outdoor side of the frame outer periphery side space S3.

[0053] The water-repellent member 135 is made of a metal material such as an aluminum alloy, and is a long member that is arranged longitudinally on the outer periphery of the vertical frame 13. It has a visible wall 135a and a water-repellent portion 135b that extends obliquely from the outer periphery end of the visible wall 135a toward the outside of the room, and the inner periphery end of the visible wall 135a is overlapped with the outside part of the vertical frame 13 and fixed by fixing means b31 such as screws.

[0054] The water-repellent member 135 fixed to the vertical frame 13 is positioned so as to extend from near the upper end of the upper frame 11 to the upper surface of the water-repellent portion 125b of the water-repellent member 125 fixed to the lower frame 12, as shown by the dotted line in Figure 2, and a dry filler F3 such as glass wool is filled on the indoor side of the water-repellent member 135 in the frame outer periphery side space S3.

[0055] (Effects of the sash of this embodiment) According to the fixture of this embodiment, the sash is attached to the opening in the main body from the inside of the room using a dry mounting device, thereby improving workability, while the space between the inside of the frame body and the inside of the opening in main body A is airtight using airtight tapes 71 to 73, and a non-wet filler is filled into the space between the outer periphery of the frame body and the inner periphery of the opening, thereby improving heat insulation and sound insulation performance.

[0056] Furthermore, by providing a water-repellent member on the outdoor side of the space between the outer periphery of the frame body and the inner periphery of the opening, water that seeps in when there is a defect in the sealing around the window or cracks due to deterioration over time can be prevented from reaching the outer space of the frame body, preventing it from entering the room and also preventing deterioration of the dry filler material filled in the outer space.

[0057] (Other embodiments) The airtight tape (tape-shaped airtight material) that airtightly seals the indoor side of the space on the outer periphery of the frame may be a flexible tape or sheet-shaped airtight material that can be attached by adhesive or the like across the indoor side of the upper frame 11 and the indoor side of the main body A, and can separate the space on the outer periphery of the frame from the indoor space, and is not limited to a long, thin airtight tape.

[0058] The sealing material that provides an airtight seal between the outdoor side of the upper frame 11 and vertical frame 13 and the outdoor side of the main body A may be either a dry type or a wet type, and the sealing structure on the outdoor side is not particularly limited.

[0059] The vertical water-reflecting member 135 provided in the opening device of the second embodiment does not necessarily have to be provided, and the vertical water-reflecting member 135 may be provided in the opening device of the first embodiment.

[0060] The shape of the inner peripheral surface of the opening of the skeleton A in which the opening device of this embodiment is arranged may be any shape. For example, the inner peripheral surface of the opening of the skeleton A does not need to have a step. Depending on the shape of the opening in the main body A and the shape of the lower frame 12, as shown in Figure 7(b), an angle iron 126 made of a metal material such as an aluminum alloy may be screwed to the outside of the opening side member 521 fixed to the upper surface of the lower inner surface B2, and further sealed as appropriate, so that the rising portion 126a of the angle iron 126 can prevent water from entering.

[0061] 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]

[0062] 52: Mounting device 72: Airtight tape 12: Bottom frame 121: Drainer 125: Water return material 521: Opening side member 522: Frame side member A:Structure B2: Lower inner surface F2: Filler S2: Space on the outer periphery of the frame s21: Sealing material s22: Sealing material

Claims

1. The system comprises a frame body to be placed on the inner periphery of an opening in a reinforced concrete structure, and a mounting device for mounting the frame body to the opening in the reinforced concrete structure, The mounting device comprises an opening side member fixed to the inner peripheral surface of the opening and a frame side member fixed to the outer periphery of the frame body, A space on the outer periphery of the frame is formed between the outer periphery of the frame body and the inner periphery of the opening without injecting mortar, On the indoor side of the mounting device, a tape-like airtight material is provided between the frame body and the opening, and on the outdoor side of the mounting device, the gap between the frame body and the opening is sealed, The space around the outer periphery of the frame is connected to the outdoor space via an outside air inlet located outside the airtight tape, creating an isobaric space. opening device.

2. The system comprises a frame body to be placed on the inner periphery of an opening in a reinforced concrete structure, and a mounting device for mounting the frame body to the opening in the reinforced concrete structure, The mounting device comprises an opening side member fixed to the inner peripheral surface of the opening and a frame side member fixed to the outer periphery of the frame body, A space on the outer periphery of the frame is formed between the outer periphery of the frame body and the inner periphery of the opening without injecting mortar, On the indoor side of the mounting device, a tape-like airtight material is provided between the frame body and the opening, and on the outdoor side of the mounting device, the gap between the frame body and the opening is sealed, Dry filler material is provided in the space around the frame. opening device.

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