JPH0564342U - Joint structure of outer wall - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a joint structure for an outer wall that restrains the expansion and contraction of joints by restraining the movement of the outer wall material with a base material even when the outer wall material tends to expand and contract, and relaxes the expansion and contraction stress. thing. In a joint portion 8 in which the side ends 2 of the outer wall material 1 are combined, the back surface of the joint portion 8 of the outer wall material 1 is adhered to a wooden base material 5 with an adhesive 6, and the nail 7 or a screw is used to A joint structure of an outer wall in which a joint portion 8 of the outer wall material 1 is fixed to the wooden base material 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint structure of an outer wall of a building.

[0002]

[Prior Art]

 Conventionally, as joint structures of the outer wall for preventing the occurrence of cracks in the joints of the outer wall, there are, for example, Utility Model No. 2-352547, Utility Model No. 2-339036, and Utility Model No. 2-68951.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional joint structure, the joint portion of the outer wall material is filled with the elastic sealing material, and the elastic putty layer with the elastic cloth interposed is formed on the surface of the elastic sealing material. The surface coating is made of elastic paint.Therefore, if the surface coating is made of elastic paint, the back surface of the joint and the base material have not been bonded, and the dimensions of the outer wall material may change. Although it is easy to prevent cracks from occurring, there is a problem that it is easy to cause skinning (dents) in the joints. On the other hand, when the surface coating is an inelastic coating, the movement of the outer wall material can follow the movement. As a sealing material, the non-elastic coating material has a problem that it is hard to follow the dimensional change of the outer wall material and is apt to crack because the non-elastic coating material is hard. Also, when the outer wall material is simply fixed to the base material with nails or screws without an adhesive, expansion / contraction stress of the outer wall material at the joints of the joints of the outer wall material during expansion / contraction of the outer wall material is There was a problem that cracks tended to occur when concentrated. Therefore, the present invention provides a joint structure of the outer wall that restrains the expansion and contraction of the joint by restraining the movement of the outer wall material by the base material even when the outer wall material tends to expand and contract, and also reduces the expansion and contraction stress. It is intended to solve the problems of the prior art.

[0004]

[Means for Solving the Problems]

 That is, according to the present invention, in the joint portion where the side edges of the outer wall material are joined together, the back surface of the joint portion of the outer wall material is adhered to the wood base material with an adhesive, and the joint of the outer wall material is joined with a nail or a screw. In the first invention, the joint structure of the outer wall is characterized in that the joint portion is fixed to the wooden base material, and in the first invention, an elastic sealing material or an elastic member is attached to the surface of the joint portion. It includes a second invention in which an elastic paint layer is formed with a putty interposed.

[0005]

[Action]

 In this joint structure, when the outer wall material expands or contracts, the base material adhered to the outer wall material with the adhesive restrains the movement of the outer wall material and prevents the joint part from expanding or contracting. The wooden base material is used to relieve the expansion and contraction stress generated in the joints.

[0006]

【Example】

 Next, one embodiment of the present invention shown in FIG. 1 will be described. The chamfered portion 3 and the rising portion 4 are provided on the surface sides of the both end portions 2 and 2 of the outer wall material 1. The chamfering width W and the chamfering depth D of the chamfered portion 3 are required to have appropriate lengths, and are necessary to some extent in order to reduce the seam of the joint portion, which will be described later, due to the contraction of the outer wall material 1. For example, it is suitable that the chamfer width W is 20 to 40 mm and the chamfer depth D is 2 to 4 mm. Further, it is advantageous that the chamfer width W is wide when adjusting the joint unevenness. Further, the rising portions 4 are provided in order to eliminate unevenness of the chamfer width W due to uneven thickness of the outer wall material 1. In this example, the adjacent side ends 2 and 2 of the outer wall materials 1 and 1 are butted, the backsides of the side ends 2 and 2 are adhered to the wood base material 5 of the building with the adhesive 6, and the nails 7, 7, and the chamfered portions 3 and 3 on the front surface side form a V-shaped joint portion 8. The joint portion 8 is filled with an elastic sealing material 9, and the elastic sealing material 9 is attached. An elastic coating layer 10 is formed on the surface and the outer wall materials 1 and 1.

In this case, examples of the adhesive 6 include vinyl acetate-based, acrylic-based, urethane-based, and epoxy-based adhesives, which are preferably relatively hard, but adhesive tape or the like can also be used. .. The base material 5 is preferably a wood base material such as a wooden furring strip or plywood. Immediately, when the expansion and contraction stress of the outer wall material 1 increases, this stress is relaxed. Therefore, unnecessary expansion and contraction stress is not generated in the outer wall material 1, and cracks are prevented from being generated. The elastic sealing material 9 is made of an acrylic, modified silicone, urethane, or polysulfite-based elastic sealing material, which absorbs the expansion and contraction of the outer wall material 1 and prevents rainwater from the joint portion 8. Invasion is prevented, and the outer wall members 1 and 1 are adjusted for unevenness by being applied over the edge of the joint portion 8. The elastic paint layer 10 is made of a synthetic rubber-based or acrylic resin-based paint that has elasticity for a long period of time.

In this joint structure, when the outer wall material 1 tends to expand and contract, the base material 5 fixed to the outer wall material 1 with the adhesive 6 restrains the movement of the outer wall material 1. When the expansion / contraction stress of the outer wall material 1 tends to increase due to the expansion / contraction of the outer wall material 1 being prevented from expanding / contracting, the wood base material 5 exerts an appropriate elasticity to expand / contract. Relieves stress. Therefore, unnecessary expansion and contraction stress is not generated in the joint portion 8 of the outer wall material, and the generation of cracks is prevented. Further, the elastic sealing material 9 and the elastic paint layer 10 of the joint portion 8 adapt to the above-mentioned expansion and contraction tendency due to elasticity, and prevent the joint portion 8 from cracking.

[0009]

[Effect of the device]

 As described above, in the present invention, even if the outer wall material tends to expand and contract, the wooden base material fixed to the joint portion with an adhesive can restrain the movement of the outer wall material and prevent the joint portion from expanding and contracting. The stress can be relaxed, cracks, warpage and dents at joints can be prevented and the waterproof property can be improved. According to the second aspect of the present invention, the joint structure of the outer wall can be made more inconspicuous.

[Brief description of drawings]

1 is a cross-sectional view of an embodiment of the present invention.

[Explanation of symbols]

 1 Outer Wall Material 2 Side Edge 5 Base Material 6 Adhesive 7 Nail 8 Joint

Claims (2)

[Scope of utility model registration request] 1. In a joint portion in which side edges of the outer wall material are combined, the back surface of the joint portion of the outer wall material is adhered to a wood base material with an adhesive, and the joint portion of the outer wall material is fixed with a nail or a screw. A joint structure for an outer wall, wherein the joint structure is fixed to the wooden base material. 2. The joint structure of an outer wall according to claim 1, wherein an elastic coating material is formed on the surface of the joint portion with an elastic sealing material or elastic putty interposed.