JPH0740022Y2 - Joint structure of outer wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a joint structure of an outer wall of a building.

[Prior Art] Conventionally, as a joint structure of the outer wall for preventing the occurrence of cracks in the joint portion of the outer wall, JP-B-58-44204 and JP-A-61-2
Examples include 00256 and Jikkou 62-17554.

[Problems to be solved by the invention] However, in the joint structure of Japanese Utility Model Publication No. 58-44204, the surface of the sealing material filled in the joint portion of the outer wall material is covered with the cement-based filler, and the net-like body and the elastic coating film are formed on it. Since it is a layered product and uses a cement-based filler,
The filler is unable to follow the movement of the outer wall material and causes a crack, and the crack easily causes a contraction stress in the elastic coating layer to increase. Further, in the joint structure of JP-A-61-200256, the joint portion of the outer wall material is filled with a sealant, the surface of the sealant is coated with an elastic putty with an elastic cloth interposed therebetween, and a hard paint layer is formed on the surface of the elastic putty. Only the elastic putty can follow the movement of the outer wall material, and the elastic cloth slightly relaxes the contraction stress of the outer wall material, but this contraction stress is finally transmitted to the paint layer. Is
Since the paint layer is hard, it cannot follow the shrinkage stress and is easily cracked. In addition, the joint structure of Japanese Utility Model Publication No. Sho 62-17554 is one in which a chamfered joint is formed on an outer wall material having a groove-shaped recess on the surface, the joint is filled with caulking, and a paint layer is formed on the joint. Therefore, the movement of the outer wall material is directly transmitted to the paint layer, and cracks easily occur.

Therefore, the present invention can prevent the occurrence of cracks in the joint portion by absorbing the stress even if the outer wall material changes in size and contracts or pulls stress in the joint portion. It is intended to provide a joint structure of the outer wall which is inconspicuous.

[Means for Solving the Problems] That is, according to the present invention, in the joint structure in which the outer wall members made of a single body are abutted against each other by their side end portions without adhering, An elastic sealing for waterproofing is interposed between the upper and lower nuts, and slanted chamfered parts are provided at the corners on the surface side of the side ends facing each other in the phase shift part. The joint structure of the outer wall is characterized in that an elastic putty layer having an elastic cloth interposed is formed on a V-shaped joint portion formed by the chamfered portion, and an elastic paint layer is further formed on the surface of the elastic putty layer.

[Operation] In the joint structure as described above, when the outer wall material expands and contracts, the stress due to the expansion and contraction is relieved by the elasticity of the elastic putty layer, the elastic cloth, the elastic paint layer, and the elastic sealing of the joint, Absorb.

[Embodiment] Next, an embodiment of the present invention will be described. A dry type exterior material is used as the outer wall material 1, and one end 2 and the other end 3 of the outer wall material 1 are overlapped with each other by overlapping. The upper solid 4 and the lower solid 5 are formed, and the chamfered portions 6 and 7 are provided at the corners formed by the surface of the outer wall material 1 and the one end 2 and the other end 3. The width and depth of the thin chamfered portions 6 and 7 are 0 and
It is about 5 to 1 mm. In addition, the length of each of the upper nut 4 and the lower nut 5 is about 5 to 20 mm.

Further, as is known from FIG. 1, the both end portions of the outer wall material are merely butted together by the interlocking and not bonded by an adhesive agent or the like. The thin chamfered portions 6 and 7 are formed in a slanting shape at the corners on the surface side of the respective side end portions.

This outer wall material 1 is tightly bonded to a furring strip or a frame (not shown) of a building, and an upper solid 4 is superposed on a lower solid 5 of adjacent side ends 3 and 2 via an elastic sealing 8 of synthetic rubber. A V-shaped joint portion 9 is formed by the thin chamfered portions 6 and 7.

An elastic putty layer 10 is formed by applying an elastic putty over the surfaces of the joint portion 9 and the outer wall members 1, 1 at the edges of the joint portion 9 of the outer wall, and the elastic putty layer 10 has an elastic cloth 11 interposed therebetween. .
The elastic putty layer 10 is made of acrylic or urethane type elastic putty, and the elastic cloth 11 is made by knitting synthetic fibers such as nylon (trademark), Tetron (trademark) and vinylon (trademark), natural fibers and the like. .

An elastic paint layer 12 is formed on the surface of the elastic putty layer 10 and the outer wall members 1 and 1. As the elastic paint layer 12, a synthetic rubber-based or acrylic resin-based paint having elasticity even after drying is used.

In this joint structure, when the outer wall materials 1 and 1 expand and contract, the elastic putty layer 10, the elastic cloth 11 and the elastic paint layer 12 of the joint part 9 alleviate and absorb the stress caused by the expansion and contraction. Prevent cracks in the part 9. In addition, the elastic sealing 8 interposed between the lower solid 5 and the upper solid 6 of the phase-joint prevents rainwater from flowing around the outer wall members 1 and 1 through the joint 9. Further, the thin chamfered portions 6 and 7 of the outer wall materials 1 and 1 prevent the joint portion 9 from being thinned and chipped.

Table 1 shows the results of testing the crack resistance and the dryness of this example and other comparative examples using a full-scale outer wall material (1820 × 2730 mm). As a test method, water was sprinkled on the surface for 3 days, and thereafter, heat irradiation at a surface temperature of 80 ° C. was performed for 20 days.

As can be seen from the test results in Table 1, in Examples, good results were obtained regarding crack resistance, and relatively good results were also obtained regarding eye resistance.

[Effect of device] As described above, in the present invention, even if the outer wall material changes in size and contraction or tensile stress occurs in the joints, this stress is relaxed and absorbed by the elastic putty layer and the elastic paint layer with the elastic cloth interposed. It is possible to prevent the occurrence of cracks in joints. Further, since the joint portion has an elastic structure, it is possible to prevent the occurrence of cracks in the outer wall material as compared with the inelastic structure. Further, the waterproof material interposed between the lower and upper fruits is an elastic sealing and has an elastic force, and the lower and upper fruits are not bonded. Therefore, even if the contraction or tensile stress is generated in the joint, the facing portion between the lower and upper solids is relaxed and absorbed by the elasticity of the elastic sealing. Therefore, also in this respect, it is possible to prevent the occurrence of cracks in joints. Also,
Of course, elastic sealing can prevent rainwater from entering.

Further, since the slanted chamfered portions are formed at the corners on the surface side of the side end portions of the outer wall member, it is possible to prevent the joints from being thinned and chipped. Further, since the elastic putty layer having the elastic cloth interposed therebetween and the elastic paint layer are formed on the joint portion, the joint becomes appearanceless and the appearance of a large outer wall can be obtained.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a cross-sectional view and FIG. 2 is a partially cutaway oblique view. 1 ... Outer wall material, 2, 3 ... Side end, 4 ... Real, 5 ...
Solid, 6, 7 ... Fine chamfer, 8 ... Elastic sealing,
9 ... Joint, 10 ... Elastic putty layer, 11 ... Elastic cloth,
12 ... Elastic paint layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Muro Muro 12 Shiodome-cho, Minato-ku, Nagoya, Aichi Nichiha Co., Ltd. (72) Yuto Ohashi 12 Shiodome-cho, Minato-ku, Aichi, Nichiha Nichiha (56) References JP-A-55-55760 (JP, A) Actual development Sho-53-66825 (JP, U) Actual publication 62-17554 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A joint structure in which outer wall members made of a single body are abutted with each other at their side end portions by means of phase gluing without adhering to each other, and between the upper and lower solids for overlapping by the phase gluing. With a waterproof elastic sealing in between, a slanted chamfered part is provided at the corner of the side end facing each other in the mating part, and a V-shaped chamfered part formed by these slender chamfered parts is provided. An outer wall joint structure characterized in that an elastic putty layer having an elastic cloth interposed is formed in a joint portion, and an elastic paint layer is further formed on the surface of the elastic putty layer.