JP4056404B2 - Joint structure at the opening of a building - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint structure in an opening of a building.
[0002]
[Prior art]
In the following Patent Document 1, the joint space formed between the butted end surfaces of the building wall base material is made into a substantially rhomboid cross section, and the joint space having a substantially rhomboid cross section is made of discontinuous pore foam. It is described that a joint material is formed by sandwiching a sealing material in a state where the upper and lower portions in the thickness direction are strongly pressed.
[0003]
[Patent Document 1]
In addition, in Japanese Patent Publication No. 3-26168, the following Patent Document 2 includes a first seal member fixed to one building member and a total width dimension of the first seal member fixed to the other building member. When using the second seal member set to the width or more of these, these seal members are fixed in advance to each building member before being installed in the building, and when these building members are installed in the building , Both seal members are described so that their outer end faces are substantially flush with each other and are in close contact with each other.
[0004]
[Patent Document 2]
Japanese Patent Laid-Open No. 11-222949 [Problems to be Solved by the Invention]
Conventionally, a caulking material has been used to seal a gap between an opening of a wall and a window frame provided in the opening. However, since the width of this gap is relatively large, usually 10 to 30 mm, and the depth dimension is large, the amount of caulking material used is increased. When the amount of caulking material used is large, the shrinkage of the caulking material itself becomes large, so that the caulking material is easily peeled off, and the waterproofness is impaired. For this reason, an operator having skilled skills has to construct carefully, which increases the labor and cost of construction.
[0005]
All of the above-described conventional techniques are used to seal a joint portion in the opening as described above, by pressing a sealing material or a seal member between wall base materials or wall panels. I can't.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention can remarkably improve the waterproofness of joint parts when constructing a window frame or the like in an opening of a building, and also greatly reduces the amount of caulking material used. An object is to provide a new joint structure capable of reducing costs and reducing labor.
[0007]
In order to achieve this object, the present invention according to claim 1 is a method in which exterior panels formed in a three-layer structure having a wood layer on the back surface side, an inorganic layer on the front surface side, and a waterproof layer between them are butted together. When the opening frame device is attached to the opening portion of the wall formed by forming the opening frame device from the material having elasticity in the gap between the opening edge mouthpiece facing the opening portion of the exterior plate and the outer surface of the opening frame device. The back-up material is filled in a compressed state with one surface in the longitudinal direction substantially flush with the back surface of the exterior plate, and the caulking material is filled on the back-up material in the gap, and the depth dimension of the back-up material is Other longitudinal surface that is set to be larger than the total dimension of the thickness of the wood layer of the exterior plate and the thickness of the waterproof layer and smaller than the overall thickness of the exterior plate including the inorganic layer, and orthogonal to the one surface of the backup material Waterproof adhesive Is provided, the backup material via the adhesive material is characterized in that it is closely attached to the opening edge butt end of the outer casing, a joint structure at the opening of the building.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a joint structure in an opening of a building according to an embodiment of the present invention will be described with reference to FIGS.
[0011]
In this joint structure, when the window device 2 made of a window frame, a duct, or other parts is attached to the opening (not indicated) of the wall formed by abutting the exterior plates 1 and 1 together, the exterior plate 1 It is formed by filling the gap 6 between the opening edge mouthpiece facing the opening of the window 2 and the outer surface 2 a of the window device 2 with the backup material 3 and the caulking material 5.
[0012]
The exterior board 1 has a three-layer structure including a wood layer 1a and an inorganic layer 1c laminated on the wood layer 1a with a waterproof layer 1b interposed therebetween.
[0013]
For the wood layer 1a, plywood, wood fiber material (MDF, etc.), wood chip material, laminated wood, or any other wood-based plate material can be used.
[0014]
An acrylic synthetic resin emulsion, butyl rubber, bitumen emulsion, or the like can be used for the waterproof layer 1b.
[0015]
The inorganic layer 1c is a lightweight mortar material obtained by adding and mixing water and lightweight aggregate to cement. As the cement, Portland cement, blast furnace cement, silica cement, fly ash cement, alumina cement, or the like can be used. As the lightweight aggregate, sand, synthetic resin foam particles or the like can be used. In addition, as an admixture, powders such as AE agent (air entraining agent), cement dispersant, waterproofing agent, colorant, pozzolanic slaked lime, dolomite plaster, and inorganic fibers such as asbestos, rock wool, mineral wool, Synthetic resins such as methylcellulose can be used according to the purpose of use.
[0016]
The back-up material 3 is formed of an elastic member, and includes synthetic rubber, natural rubber, styrene / butadiene / styrene block copolymer (SBS), styrene / butadiene / rubber (SBR), soft synthetic resin such as silicone resin, and the like. These foams are preferably used. When a foam is used, either a closed cell type or an open cell type may be used, but from the viewpoint of improving waterproofness, a closed cell type is more preferable.
[0017]
The backup material 3 is used as a long body extending along the opening edge mouthpiece of the exterior board 1, and a waterproof adhesive material 4 is provided in advance on one side surface in the longitudinal direction. As the adhesive 4 having waterproof properties, a double-sided tape in which an adhesive is applied to the front and back surfaces of a nonwoven fabric or a film base is used, and the adhesive is bonded to one side in the longitudinal direction of the backup material 3 via the adhesive on one side. Can do.
[0018]
The backup material 3 has a back surface (hereinafter referred to as the back surface) of the longitudinal side surfaces (hereinafter referred to as the front surface and the back surface) orthogonal to the surface on which the adhesive material 4 is provided. ) And substantially flush with the opening edge of the exterior plate 1 through the adhesive 4 and fixed.
[0019]
The depth dimension A (FIG. 2) of the backup material 3 is larger than the total dimension of the thickness T1 of the wood layer 1a of the exterior board 1 and the thickness T2 of the waterproof layer, and the entire exterior board 1 including the inorganic layer 1c. Less than thickness. That is, (T1 + T2) <A <(T1 + T2 + T3).
[0020]
Further, the width dimension B in the normal state of the backup material 3 including the adhesive material 4 (when the backup material 3 and / or the adhesive material 4 is not compressed) is an opening edge mouthpiece facing the opening of the exterior plate 1 and the window device. 2 is set to be larger than the width W of the gap 6 between the outer surface 2a. That is, B> W. Note that the width dimension B1 in FIGS. 2 and 3 is shown as being the same as the gap width W as a result of the backup material 3 and / or the adhesive material 4 being compressed under load. That is, B> B1 = W.
[0021]
As the caulking material 5, a conventional caulking material such as urethane or silicon can be used.
[0022]
At the time of construction, the butt ends of the exterior plates 1 and 1 are cut into square shapes so that a slight gap 6 (for example, about 10 mm) is provided between the outer dimensions of the window device 2 and then opened. The backup material 3 is stuck along the edge. When sticking the backup material 3, the adhesive material 4 is pressed against the opening edge of the exterior plate 1 so that the back surface thereof is substantially flush with the back surface of the exterior plate 1 (the back surface of the wood layer 1 a). As will be described later, since the adhesive material 4 functions as a waterproof seal, after the dust on the opening edge of the exterior plate 1 is completely removed, the adhesive material 4 is pressed against the opening edge of the exterior plate 1 to be sufficiently adhered. Care should be taken so that a stable adhering state can be obtained so as not to leave even after construction.
[0023]
After the exterior plates 1 and 1 to which the backup material 3 is adhered in this manner are butted against each other in a state where the window device 2 is accommodated in the opening portion formed by the rectangular cutout, the opening of the exterior plate 1 is opened. On the surface side of the backup material 3 inserted and arranged in a compressed state in the gap 6 between the opening edge mouthpiece facing the portion and the outer surface 2a of the window device 2, and the surface of the exterior plate 1 (surface of the inorganic layer 1c) By filling the gap 6 with the caulking material 5 so as to be substantially flush, a joint structure in the window opening is constructed.
[0024]
According to the joint structure in the window opening as described above, the backup material 3 inserted and disposed in the gap 6 between the opening edge mouthpiece facing the opening of the exterior plate 1 and the outer surface 2a of the window device 2 is provided. Since the depth dimension A is larger than the total dimension of the thickness T1 of the woody layer 1a of the exterior board 1 and the thickness T2 of the waterproof layer, the inorganic layer 1c of the exterior board 1 is poor in waterproofness. Even if water passes through, the waterproof layer 1b provided in the lower layer of the inorganic layer 1c of the exterior board 1 and the waterproof adhesive 4 provided on the abutting surface side of the backup material 3 with respect to the exterior board 1 This prevents further water intrusion. Therefore, even if water passes through the inorganic layer 1c from the outside of the exterior board 1, it is blocked by the waterproof layer 1b and the adhesive material 4 and does not reach the wood layer 1a. Therefore, corrosion of the wood layer 1a can be prevented. it can.
[0025]
Further, the opening edge lip portion of the inorganic layer 1c is blocked by the caulking material 5 on the front surface side and by the adhesive material 4 of the backup material 3 on the back surface side, and thus has passed through the inorganic layer 1c. Water is prevented from entering the back side of the exterior board 1. As described above, the normal width B of the backup material 3 including the adhesive material 4 is set to be larger than the gap width W of the opening, and these are compressed and inserted into the gap 6. Therefore, in the construction state, the adhesive material 4 is in close contact with the opening edge mouthpiece of the exterior material 1 and contributes effectively to improving waterproofness.
[0026]
Although the caulking material 5 is coated and filled on the surface side of the backup material 3, a considerable portion of the depth of the gap 6 between the opening edge mouthpiece facing the opening of the exterior plate 1 and the outer surface 2 a of the window device 2 is formed. The backup material 3 occupies and does not need to be filled over the entire depth of the gap 6 as in the prior art, so that the amount of use can be greatly reduced, and the cost can be reduced and labor can be reduced.
[0027]
【The invention's effect】
As described above, according to the present invention, the waterproofness of the joint portion when constructing a window frame or the like in the opening of the building can be remarkably improved, and the amount of the caulking material used is greatly increased. The cost can be reduced and the construction labor can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view showing an opening joint structure according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along line 1x-x.
FIG. 3 is a cross-sectional view taken along the line 1y-y in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Exterior material 1a Wood layer 1b Waterproof layer 1c Inorganic layer 2 Window device (opening frame device)
2a Outer side surface 3 Backup material 4 Adhesive material 5 Caulking material 6 Crevice

Claims (1)

Attaching an opening frame device to the opening of the wall formed by abutting together the exterior boards formed in a three-layer structure with a wood layer on the back side, an inorganic layer on the front side, and a waterproof layer between them The back-up material made of a material having elasticity in the gap between the opening edge lip facing the opening of the exterior plate and the outer surface of the opening frame device is substantially the same as the back surface of the exterior plate. The back-up material in the gap is filled with a caulking material , and the depth of the back-up material is the sum of the thickness of the wood layer of the exterior plate and the thickness of the waterproof layer. Larger and smaller than the entire thickness of the exterior plate including the inorganic layer, a waterproof adhesive material is provided on the other longitudinal surface perpendicular to the one surface of the backup material. Backup material is outside Characterized in that it is closely attached to the opening edge butt end of the plate, joint structure at the opening of the building.