Airtight structure around frame and construction method thereof

Abstract

To provide an airtight structure around a frame, capable of easily and reliably ensuring airtightness at an inside corner on an indoor side, and a construction method thereof.SOLUTION: In an airtight structure 100 around a frame at an inside corner 1 on an indoor side, the inside corner 1 is formed of a first inner wall 3a having an opening 2 and arranged on the indoor side, and a second inner wall 3b arranged perpendicular to the first inner wall 3a. The opening 2 has a first vertical frame 4a arranged at a side end on the inside corner 1 side of the first inner wall 3a and extending vertically, a first airtight member 5 that is long and L-shaped in a cross-sectional view and fixed to the first vertical frame 4a, and a first vertical base material 6a arranged along an outer periphery of the frame 4 and extending vertically. The first airtight member 5 is fixed so that the inside of a bent portion 5c and the first vertical base material 6a are in contact with each other. One side 5a of the first airtight member 5 is fixed between a surface 14 on the inside corner side of the first vertical frame 4a and the first vertical base material 6a. The other side 5b of the first airtight member 5 is fixed between an end side surface 8 of the second inner wall 3b and the first vertical base material 6a.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an airtight structure around a picture frame provided in the vicinity of an inside corner as viewed from the indoor side of a house or the like, and a construction method thereof. [Background technology]

[0002] In cold regions, etc., it is necessary to improve the insulation performance of buildings, so the importance of highly airtight houses that prevent unnecessary air from going in and out is increasing. In particular, a highly airtight structure is required between the sash frame and the inner wall at the opening, as air is likely to leak between these areas.

[0003] Therefore, Patent Document 1 describes an airtight structure around the sash, which includes a sash frame supporting the sash of a building opening, an inner wall frame formed on the indoor side of the building opening, a first airtight material attached to the indoor corner of the sash frame and retaining its shape, a second airtight material attached to the inner wall frame and retaining its shape, and a flexible airtight sheet that seals the gap between the first airtight material and the second airtight material. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2018-071058 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when there is an opening at the inside corner on the indoor side, if an airtight sheet is used to ensure airtightness between the frame and the interior wall, it is necessary to attach the airtight sheet X in a U-shape, as shown in Figure 11. Since the airtight sheet X is attached to a narrow gap, it is difficult to attach it reliably to the corner, and when an interior wall surface material Y such as gypsum board is inserted into the recessed part of the U-shape, the airtight tape breaks or peels off, making it impossible to ensure airtightness.

[0006] In view of the above-mentioned problems, the present invention aims to provide an airtight structure around a picture frame that can easily and reliably ensure airtightness at an inside corner on the indoor side, and a construction method thereof. [Means for solving the problem]

[0007] An airtight structure around a frame at an inside corner on the indoor side, the inside corner being formed of a first inner wall having an opening and arranged on the indoor side, and a second inner wall perpendicular to the first inner wall and arranged on the indoor side, the opening being provided at a side end of the first inner wall on the inside corner side, and the frame being arranged around the periphery of the opening being formed of a first vertical frame on the inside corner side, a first airtight member having an L-shaped cross section and a long length fixed to a surface on the inside corner side of the first vertical frame, and the second inner wall. Among the opening base materials provided along the outer periphery of the frame, there is a first vertical base material extending vertically on the inside corner side, and the first airtight member is fixed so that the inside of the bent portion of the first airtight member is in contact with the first vertical base material, and in horizontal cross section, one side of the first airtight member is fixed between the face of the first vertical frame on the inside corner side and the first vertical base material, and the other side of the first airtight member is fixed between the end side of the second inner wall and the first vertical base material.

[0008] Another feature of the present invention is that one side is formed longer than the other side, and there is a gap between the one side and the first vertical base material.

[0009] Furthermore, the method for constructing an airtight structure around a frame at an indoor corner as described in claim 1 or claim 2 is characterized in that it sequentially includes a step of fixing one side of a first airtight member to a first vertical frame, a step of fixing the first vertical frame with an adhesive so that the inside of the bent portion of the first airtight member contacts the first vertical base material, and a step of positioning the second inner wall so that the other side is located between the end side surface of the second inner wall and the first vertical base material.

[0010] The airtight structure around a frame at an inside corner on the indoor side is characterized in that the inside corner is formed from a first inner wall having an opening and arranged on the indoor side, and a second inner wall perpendicular to the first inner wall and arranged on the indoor side, the opening is provided at the side end of the first inner wall on the inside corner side, and the frame arranged around the periphery of the opening includes a first vertical frame on the inside corner side, a second airtight member which is an airtight tape, the second inner wall, and an opening base material provided along the outer periphery of the frame, the first vertical base material extending vertically on the inside corner side, and a sash frame attached to the opening, the first vertical frame is attached to the sash frame, and the second airtight member is continuously affixed from the sash frame to the first vertical base material along the inside corner side face and end side of the first vertical frame.

[0011] The method for constructing an airtight structure around a frame in an inside corner on the indoor side as described in claim 4 is characterized in that it includes sequentially carrying out the steps of attaching a second airtight member along the inside corner side surface of the first vertical frame, from the sash frame to the first vertical base material, fixing the frame to the sash frame, and positioning the second inner wall. Effect of the Invention

[0012] One side of the first airtight member, which is L-shaped in cross section, is fixed between the surface of the inside corner of the first vertical frame and the first vertical base material, and the other side of the first airtight member is fixed between the end side of the second inner wall and the first vertical base material, thereby improving the airtightness between the first vertical frame and the second inner wall.

[0013] One side is formed to be longer than the other side, and there is a gap between the one side and the first vertical base material, so that collision between the first airtight member and the first vertical base material can be avoided and distortion of the airtight structure around the frame can be prevented. Also, since it is possible to buffer micro-vibrations from being transmitted directly from the first vertical frame to the first vertical base material or the second inner wall, it is possible to make it difficult for micro-vibrations to be transmitted.

[0014] By fixing the first airtight member to the first vertical frame in advance, an airtight structure between the frame and the inner wall can be ensured simply by installing the frame.

[0015] The second airtight member, which is an airtight tape, is continuously attached along the inside corner surface of the first vertical frame and the end side surface of the second inner wall, from the sash frame attached to the opening to the first vertical base material, thereby improving the airtightness between the first vertical frame and the second inner wall.

[0016] By previously attaching the second airtight member along the surface of the inside corner of the first vertical frame, from the sash frame to the first vertical base material, it is possible to simultaneously ensure an airtight structure between the frame and the inner wall by simply installing the frame. [Brief description of the drawings]

[0017] [Figure 1] FIG. 13 is a diagram showing the inside of a room in which an opening is provided near an interior corner on the indoor side. [Diagram 2] 1 is a horizontal cross-sectional view of an airtight structure around a picture frame according to a first embodiment of the present invention. [Diagram 3] FIG. 3 is an enlarged view of the airtight structure around the frame in FIG. [Figure 4] 10 is a horizontal cross-sectional view showing the relationship between the opening base material and the frame. FIG. [Diagram 5] FIG. 13 is a perspective view showing the flow of an airtight construction method around a frame according to the first embodiment, illustrating a state in which a first airtight member is attached to a first vertical frame of the frame. [Figure 6] FIG. 11 is a horizontal cross-sectional view showing the flow of an airtight construction method around a picture frame according to the first embodiment, showing the state of attaching a picture frame to which a first airtight member is attached. [Figure 7] FIG. 11 is a horizontal cross-sectional view showing the flow of an airtight construction method for around a picture frame according to the first embodiment, illustrating how a second inner wall is attached and constructed. [Figure 8] 4 is a horizontal cross-sectional view of an airtight structure around a frame according to the first embodiment in which a filler is used. FIG. [Figure 9] 11 is a horizontal cross-sectional view of an airtight structure around a picture frame according to a second embodiment of the present invention. FIG. [Figure 10]FIG. 13 is a diagram showing the flow of an airtight construction method around a picture frame according to a second embodiment, and is a perspective view showing a state in which a second airtight member is attached before constructing the picture frame. [Figure 11] 13 is a horizontal cross-sectional view showing a conventional airtight structure between a vertical frame and an inner wall in a recessed corner portion. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that each embodiment is merely one embodiment of the present invention, and the embodiment can be changed without departing from the gist of the present invention.

[0019] The airtight structure 100 around a picture frame according to the present invention is an airtight structure around a picture frame at an inside corner 1 as viewed from the indoor side. As shown in Fig. 1, the inside corner 1 is formed of a first inner wall 3a having an opening 2 and arranged on the indoor side, and a second inner wall 3b that is perpendicular to the first inner wall 3a and arranged on the indoor side. The opening 2 is provided at the side end of the first inner wall 3a, which is the end on the inside corner 1 side.

[0020] In this specification, the inside corner 1 on the indoor side means an inside corner formed by two inner walls when viewed from the indoor side, and includes an inside corner that is an outside corner when viewed from the outdoor side, and an inside corner that is formed by an inner wall and a partition wall even if it is not an outside corner when viewed from the outdoor side.

[0021] [First embodiment] As shown in Figures 2 and 3, the airtight structure 100 around the frame in the first embodiment mainly comprises a first vertical frame 4a, a first airtight member 5, a second inner wall 3b, and a first vertical base material 6a, and prevents outdoor air from entering the room through the gap at the contact point between the first vertical frame 4a and the second inner wall 3b.

[0022] (Regarding the first airtight member 5) As shown in FIG. 5, the first airtight member 5 is an L-shaped long member having one side 5a, another side 5b, and a bent portion 5c at the intersection thereof in a horizontal cross section. The first airtight member 5 is made of a metal such as aluminum or stainless steel, or a material having a certain shape such as resin. The vertical length of the first airtight member 5 and the vertical length of the first vertical frame 4a are approximately the same, and the first airtight member 5 has screw holes 5d at a certain pitch on one side 5a thereof, and is used by being fixed to the surface 14 of the first vertical frame 4a on the inside corner side with a screw. The first airtight member 5 and the first vertical frame 4a may not be fixed to each other with a screw, but may be fixed to each other with an adhesive or the like, and the fixing method is not limited.

[0023] 3, the screw holes 5d are provided on the opening side at a position farther than the projected width 7 of the first vertical base material 6a so that the screw heads 5e do not come into contact with the first vertical base material 6a when the frame is installed. The length of the other side 5b is formed to be approximately the same as or longer than the length of the end side surface 8 of the second inner wall 3b.

[0024] By fixing the first airtight member 5 to the first vertical frame 4a in advance, it is possible to easily install the tape even in a narrow and difficult-to-install location such as the recessed corner 1, and the airtightness can be significantly improved. In addition, in the past, the airtight tape was installed in a U-shape, which could cause the tape to break, but by using the first airtight member 5 with a certain standard shape, the tape will not break. In addition, since the other side 5b and the end side surface 8 are straight lines, when the second inner wall 3b is installed, no gap is generated between the other side 5b and the end side surface 8 that contacts the other side 5b, and the airtightness can be improved.

[0025] (About frame 4) As shown in FIG. 5, the frame 4 is a rectangular frame body in which a first vertical frame 4a and a second vertical frame 4b of the same shape are combined with a first horizontal frame 4c and a second horizontal frame 4d of the same shape, and is arranged on the periphery 2a of the opening 2 of the first inner wall 3a. The first vertical frame 4a is one of the frames 4 arranged on the periphery 2a of the four sides of the opening 2, which extends vertically and is provided on the inside corner 1 side. The second vertical frame 4b is provided parallel to the first vertical frame 4a on the opposite side to the inside corner 1 side. The first horizontal frame 4c is provided on the upper side of the opening 2, and the second horizontal frame 4d is provided on the lower side. The corners of the frame 4 are rounded.

[0026] As shown in Fig. 3, the first vertical frame 4a is fixed to a sash frame 9 attached to the opening 2 by fixing members 10 such as screws. In addition, an airtight rubber sealant 11 is provided between the opening side surface of the first vertical frame 4a and the sash frame 9, filling the gap between the sash frame 9 and the first vertical frame 4a to improve airtightness. The frame 4 is fixed to the opening base material 6 so that the inside of the bent portion 5c of the first airtight member 5 fixed to the first vertical frame 4a contacts the corner of the first vertical base material 6a. The inner surface of the bent portion 5c and the first vertical base material 6a are fixed with an adhesive.

[0027] (About opening base material 6) As shown in Fig. 4, the opening base material 6 is a base for the first inner wall 3a, and is a frame-shaped body that is provided along the side of the opening 2, closer to the outside than the opening 2, and is provided around the outer periphery of the frame 4. In Fig. 4, the first horizontal frame 4c is omitted for the sake of explanation. Of the opening base material 6, the first vertical base material 6a extends vertically and is provided on the inside corner 1 side, and the second vertical base material is provided parallel to the first vertical base material 6a on the opposite side to the inside corner 1 side. The first horizontal base material 6c is provided on the upper side, and the second horizontal frame (not shown) is provided on the lower side.

[0028] (Regarding the second base material 12) As shown in Fig. 3, the second base material 12 is the base material of the second inner wall 3b, and is provided adjacent to the second inner wall 3b on the opposite side to the opening side of the first vertical base material 6a. The first vertical base material 6a is disposed so that a scattering width 6b is formed with respect to the second base material 12, and the other side 5b is fixed to the first vertical base material 6a with an adhesive at the scattering width 6b. If the scattering width 6b is too narrow, the first airtight member 5 or the first vertical frame 4a cannot be stably fixed, so the scattering width 6b must be at least half the length of the other side 5b.

[0029] (Regarding the airtight structure 100 around the picture frame) 3, the first airtight member 5 is fixed so that the inside of the bent portion 5c of the first airtight member 5 contacts the first vertical base material 6a, one side 5a of the first airtight member 5 is fixed between the surface 14 of the inside corner side of the first vertical frame 4a and the first vertical base material 6a, and the other side 5b of the first airtight member 5 is fixed between the end side surface 8 of the second inner wall 3b and the first vertical base material 6a, so that the first airtight member 5 prevents outdoor air from entering the room. In addition, a heat insulating material 13 is provided around the first vertical base material 6a and the second base material 12.

[0030] Also, there is a gap S between the first airtight member 5 and the first vertical base material 6a. By having the gap S, it is possible to prevent interference during construction due to distortion of the first vertical base material 6a when constructing the frame 4. Also, if the first airtight member 5 is made of a metal material, it is possible to prevent the first airtight member 5 from colliding with the first vertical base material 6a due to thermal expansion, and to prevent distortion of the airtight structure 100 around the frame. Even if there is a gap S, the contact points between the inside of the other side 5b of the first airtight member 5 and the first vertical base material 6a are fixed with an adhesive, so that airtightness is guaranteed by the adhesive.

[0031] The gaps between the second vertical frame 4b, the first horizontal frame 4c, and the second horizontal frame 4d and the second vertical base material 6b, the first horizontal base material 6c, and the second horizontal base material are filled with airtight tape T to improve airtightness. The second vertical frame 4b, the first horizontal frame 4c, and the second horizontal frame 4d may also have the first airtight member 5 fixed thereto to improve airtightness, as in the case of the first vertical frame 4a. However, if the first airtight member 5 is used on the four sides, problems will arise with the fitting of the first airtight members 5 at the four corners, where airtightness problems are most likely to occur, and the first airtight member 5 is used only on the first vertical frame 4a, which is closest to the recessed corner portion 1 where it is difficult to apply tape.

[0032] (About the construction method) A method for constructing the airtight structure 100 around a picture frame in an indoor corner will be described. 5, a step of fixing one side 5a of the first airtight member 5 to the first vertical frame 4a of the rectangular frame 4 is performed. In this embodiment, a screw hole 5d is provided in the first airtight member 5, and the first airtight member 5 is fixed with a screw.

[0033] Thereafter, as shown in FIG. 6, the first vertical frame 4a is fixed with adhesive so that the inside of the bent portion 5c of the first airtight member 5 contacts the first vertical base material 6a, and the frame installation process is performed. The installer can install the frame 4 of the frame body from the inside of the room so that the inside of the bent portion 5c of the first airtight member 5 contacts the first vertical base material 6a, which makes it easy to position the frame 4 in the depth direction. When installing the frame 4, a sealant 11 is sandwiched between the sash frame 9 and the first vertical frame 4a. After fixing with adhesive, the frame is fixed to the first vertical frame 4a from the sash frame 9 side with a fixing member 10 such as a screw. For the frame parts other than the first vertical frame 4a, the gap with the opening base material 6 is filled with airtight tape.

[0034] Then, as shown in Fig. 7, a step of arranging the second inner wall 3b is performed so that the other side 5b is located between the end side surface 8 of the second inner wall 3b and the first vertical base material 6a. In this embodiment, the length of the other side 5b and the length of the end side surface 8 of the second inner wall 3b are approximately the same, so no gap occurs between the first vertical frame 4a and the second inner wall 3b. However, if the length of the end side surface 8 is shorter than the length of the other side 5b, or if a gap occurs between the first vertical frame 4a and the second inner wall 3b due to the first vertical frame 4a becoming thinner, a trim material may be provided to fill the gap.

[0035] (Regarding Filler 15) As shown in Fig. 3, when using a first vertical frame 4a provided with an engagement groove G for fitting an interior wall panel material such as plaster board, a vertical space is created by the engagement groove G when the second interior wall 3b is fixed to contact the other side 5b. As shown in Fig. 8, a filler 15 may be provided to fill the vertical space. The filler 15 may be plywood or cut plaster board. By filling the vertical space of the engagement groove 15, the airtightness can be further improved.

[0036] When creating an airtight structure 100 around a frame using filler 15, the construction method involves fixing one side 5a of the first airtight member 5 to the first vertical frame 4a of the rectangular frame 4, then providing filler 15 in the first vertical frame 4a so as to fill the engagement groove G, and then installing the frame 4.

[0037] [Second embodiment] As shown in Figure 9, the airtight structure 200 around the frame in the second embodiment mainly comprises a first vertical frame 4a, a second airtight member 16, a second inner wall 3b, a first vertical base material 6a, and a sash frame 9, and prevents outdoor air from entering the room through the gap where the first vertical frame 4a and the second inner wall 3b contact each other.

[0038] (Regarding the second airtight member 16) The second airtight member 16 is an airtight tape using a butyl-based adhesive or the like. As shown in Figs. 9 and 10, the second airtight member 16 is attached without gaps from the portion of the sash frame 9 that contacts the first vertical frame 4a, through the heat insulating material 13 and the first vertical base material 6a, to the second base material 6. That is, a plurality of second airtight members 16 are attached vertically to the inner portion where the first vertical frame 4a and the second inner wall 3b contact. The second airtight members 16 are attached with a length substantially equal to the length of the first vertical frame 4a, with the second airtight members 16 overlapping each other or without gaps.

[0039] Since the second airtight member 16 is attached before the frame 4 is installed, the corners of the first vertical base material 6a can be neatly attached without the frame 4 getting in the way, ensuring airtightness.

[0040] (About the construction method) A method for constructing an airtight structure 200 around a picture frame in an indoor corner will be described. First, as shown in Fig. 10, the second airtight member 16 is attached to the second opening base material 6 through multiple layers of insulation 13 and first vertical base material 6a in order from the point of contact with the first vertical frame 4a of the sash frame 9 so as not to leave any gaps. Since this is done before the frame 4 is installed, the second airtight member 16 can be attached easily and accurately even in the narrow area of ​​the recessed corner 1.

[0041] The installer then installs the frame from the inside of the room. When installing the frame 4, the sealant 11 is sandwiched between the sash frame 9 and the first vertical frame 4a. The frame is then fixed to the first vertical frame 4a from the sash frame 9 side with screws. For the frame parts other than the first vertical frame 4a, the gap with the opening base material 6 is filled with airtight tape T.

[0042] Thereafter, a process of arranging the second inner wall 3b is performed so that the second airtight member 16 is positioned between the end side surface 8 of the second inner wall 3b and the first vertical base material 6a. If a gap occurs between the first vertical frame 4a and the second inner wall 3b, a trim material may be provided to fill the gap. In addition, as in the first embodiment, when the filler material 15 is used to fill the engagement groove G, the construction method is as follows: after the process of fixing one side 5a of the first airtight member 5 to the first vertical frame 4a of the rectangular frame 4, the filler material 15 is provided in the first vertical frame 4a to fill the engagement groove G, and then the frame 4 is attached. [Explanation of symbols]

[0043] 100 Airtight structure around picture frames 200 Airtight structure around picture frames 1 Inside corner 2 Opening 2a Periphery 3a 1st inner wall 3b 2nd inner wall 4. Picture Frame 4a First vertical frame 4b 2nd vertical frame 4c First horizontal frame 4d Second horizontal frame 5 First airtight member 5a Side 5b Other side 5c Bend part 5d screw hole 5e Screw head 6 Opening Base Material 6a First vertical base material 6b Scattering width 7. Estimated Width 8 End side 9 Sash frame 10 Fixing member 11 Sealing materials 12 Second Base Material 13. Insulation 14 Inside corner side face 15 Filler 16 Second airtight member D Groove G Engagement groove T-Tape

Claims

1. An airtight structure around a picture frame at an inside corner on the indoor side, The recessed corner portion is formed from a first inner wall having an opening and arranged on the indoor side, and a second inner wall perpendicular to the first inner wall and arranged on the indoor side, The opening is provided at a side end of the first inner wall on a front corner side, Among the frames arranged around the periphery of the opening, a first vertical frame extends vertically on the inside corner side; A first airtight member having an L-shaped cross section and a long length, which is fixed to a surface of the first vertical frame at a front corner portion; The second inner wall; Among the opening base materials provided along the outer periphery of the frame, a first vertical base material extends vertically on the inside corner side, The first airtight member is fixed to the first vertical frame so that an inner side of the bent portion of the first airtight member is in contact with the first vertical base material, In a horizontal cross-sectional view, one side of the first airtight member is fixed between a surface of the first vertical frame on the front corner side and the first vertical base material, An airtight structure around a picture frame, characterized in that the other side of the first airtight member is fixed between the end side of the second inner wall and the first vertical base material.

2. 2. The airtight structure around a picture frame according to claim 1, wherein the one side is formed longer than the other side, and a gap is provided between the one side and the first vertical base material.

3. A method for constructing an airtight structure around a picture frame according to claim 1 or 2, fixing the one side of the first airtight member to the first vertical frame; Fixing the first vertical frame with an adhesive so that an inside of the bent portion of the first airtight member contacts the first vertical base material; and a step of positioning the second inner wall so that the other side is positioned between the end side of the second inner wall and the first vertical base material.

4. An airtight structure around a picture frame at an inside corner on the indoor side, The recessed corner portion is formed from a first inner wall having an opening and arranged on the indoor side, and a second inner wall perpendicular to the first inner wall and arranged on the indoor side, The opening is provided at a side end of the first inner wall on a front corner side, Among the frames arranged around the periphery of the opening, a first vertical frame extends vertically on the inside corner side; A second airtight member which is an airtight tape; The second inner wall; Among the opening base materials provided along the outer periphery of the frame, a first vertical base material extends vertically on the inside corner side; A sash frame attached to the opening, The first vertical frame is attached to the sash frame, An airtight structure around a frame, characterized in that the second airtight member is continuously attached from the sash frame to the first vertical base material along the front corner side surface and the end side surface of the first vertical frame.

5. A method for constructing an airtight structure around a picture frame at an inside corner on the indoor side according to claim 4, A step of attaching the second airtight member along a surface of the first vertical frame on the front corner side from the sash frame to the first vertical base material; fixing the picture frame to the sash frame; and a step of placing the second inner wall in the frame.

Images