JPH0326168Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the joint structure of architectural wall base materials.
More specifically, at the joints of the wall base material stretched between structural members, a sealing material made of a foam having discontinuous pores is clamped inside the spaces of the joints, and the sealant is applied to the joints. Eliminate wilting and thinning of the caulking material applied to fully demonstrate the sealing effect such as waterproofing at the joints of the wall base material, and eliminate complaints such as cracks occurring after applying the exterior finish material. That is.

Conventionally, in the joints of wall base materials, it has been common practice to configure the abutting end surfaces of the wall base materials to form approximately V-shaped grooves, and to fill the joint grooves with caulking material.

However, depending on the material and coating thickness of the finishing material applied to the top surface of the wall base material, the coloring of the caulking material itself may stand out on the finished surface, or the caulking material itself may wither. Due to thinning and thinning, sufficient sealing effect could not be achieved.

Furthermore, the caulking material is often exposed over a wide area on the surface of the base material on both sides of the joint, and as a result, there is a difference in strength between the adhesion between the wall base material and the finishing material, and the adhesion between the caulking material and the finishing material. This difference in adhesion strength has resulted in cracks and peeling of the exterior finishing material at the joints.

As one means to solve the above problem, a method was adopted in which the end surfaces of wall base materials were simply butted together without providing a V-shaped joint groove, but the caulking material interposed between these end surfaces was adopted. The sealing of the joints was not always stable due to the caulking material being locally extruded or due to non-uniformity of the caulking material layer. Therefore, the existence of these joints degrades the waterproof performance of the entire wall.

Therefore, the present invention has been developed to solve the above problems, and uses a foam material having discontinuous pores in the joint area where the end surfaces of architectural wall base materials are butted together and has a space inside the space. The outline of the method is to clamp the sealant, thereby providing a joint structure with a high sealing effect.

Hereinafter, the joint structure of the present invention will be explained in detail based on the drawings.

FIGS. 1 to 5 show cross-sectional views of joints in each embodiment of the present invention.

FIG. 1 shows a state in which a sealing material 3 is placed at a joint 2 formed by wall base materials 1, 1.

The wall base material 1 has an inorganic layer 12 mainly made of cement mixed with foamed synthetic resin particles as needed on a substrate 11 made of, for example, plywood or fiberboard. In addition, this substrate 11 and the inorganic layer 12
In between, there is a waterproof layer 13 made of acrylic synthetic resin emulsion, butyl rubber, or bituminous emulsion.
is attached.

The butt end surfaces 14 of these wall base materials 1, 1,
14, the central part in the thickness direction is formed deep, and recesses 15, 15 are formed in the board direction of the base material. As a result, the recesses 15 are brought into contact with each other to form a joint space H having a substantially diamond-shaped cross section.

On the other hand, the sealing material 3 is a foamed body 31 with adhesive materials 32, 32 provided on both sides, and is a long material corresponding to the length of the joint portion 2.

This foamed body 31 has many foamed pores within its body, but these foamed pores are independent from each other and do not communicate with each other, that is, have no continuity.

Therefore, the foam 31 is highly elastic and has extremely high waterproof and heat insulating properties.

Adhesive material 32,
32 are provided. This adhesive material 32, 32
can be bonded on one side to the sealing material 3 and on the other side to the abutting end surface 14 of the wall base material 1. It has so-called double-sided adhesiveness.

Therefore, the sealing material 3 is placed between the abutting end surfaces 14, 14, and when the wall base materials 1, 1 are abutted against each other, the sealing material 3 is clamped in the joint space H having a substantially diamond-shaped cross section.

FIG. 2 shows another embodiment of the sealing material 3. In this sealing material 3, one side is adhered in advance to one abutting end surface 14 of the wall base material 1, and adhesive is applied only to the other side. 32 is to be attached.

In this way, the sealing material 3 is arranged in the joint space H of the joint portion 2, and as shown in FIG. In this case, unlike the embodiment shown in FIG. 1, the sealing material is provided in advance, making the construction easier.

Therefore, the airtightness of the sealing material 3 itself clamped in the space H of this joint part, and furthermore, the adhesive material 3
Due to the waterproof properties in Nos. 2 and 32, the joint structure has an extremely high sealing effect.

Furthermore, due to the existence of this joint space H, the central part in the thickness direction of the sealing material 3 is sandwiched with more margin than the upper and lower parts. In other words, the upper and lower parts are tightly clamped. Yotsute sealing material 3
It has a structure that does not lose its elasticity over time and can provide a sufficient sealing effect for many years.

Furthermore, even if there is no adhesive on the surface of the sealant 3 or if it is damaged during construction, the position to be fixed can be determined easily, and a stable waterproof function can be achieved.

FIG. 4 shows a joint structure in which waterproof layers 16, 16 are provided on the abutting end surfaces 14, 14, and a sealing material 3 is sandwiched between the waterproof layers 16, 16.

If the waterproof layers 16, 16 are provided, there is no need to provide an adhesive material on both sides of the sealant 3 as described above, and the sealant 3 can be applied to the wall base materials 1, 1 through the waterproof layers 16, 16. Butt end surface 14,1
It will be securely clamped in the joint space H of No. 4.

In other words, the joint structure shown in FIG. 4 does not have a length that further enhances the sealing effect of the joint portion, but rather ensures waterproofness at the abutting end surfaces 14, 14, so that the substrate 11, which is caused by water permeation from the end surfaces, etc. The structure is also highly effective against corrosion, etc. of No. 11.

FIG. 5 shows still another embodiment,
This joint structure has recesses 15, 15 in the end faces 14, 14 of the wall base materials 1, 1 where they meet so that the cross section of the joint space H continuous with the waterproof layers 13, 13 has a substantially rhombic shape. Form deeply. Due to the existence of this joint space H, in the case of the type of bubble sealant whose waterproof effect weakens when it is excessively compressed, the waterproof effect does not decrease, but rather a continuous waterproof membrane consisting of waterproof layer 13, sealant 3, and waterproof layer 13 is formed. This will result in a stable configuration.

This, together with the sealing effect of the sealing material 3, also improves the waterproofing effect of the entire wall base material.

In addition, in the case of this joint structure, the treatment of the joint part becomes easier by using caulk embedding together.

As described above, the joint structure of the wall base material of the present invention has a sealing material made of a foam with discontinuous pores clamped inside the space of the butted end faces, so the elasticity of the foam Close contact with the butt end surfaces is always maintained, and the foam itself is made up of discontinuous pores, so even if there are slight variations during construction, the joint as a whole remains waterproof, soundproof, and
Furthermore, it can exhibit a perfect sealing effect, such as preventing the intrusion of ventilation dust and the like.

[Brief explanation of the drawing]

Figures 1 and 2 are cross-sectional views showing the state in which the sealant is placed in the joint space, Figure 3 is a cross-sectional view showing the state in which the sealant is clamped, and Figures 4 and 5 are , FIG. 7 is a cross-sectional view showing another embodiment of the inside of the space at the butted end surfaces. 1, 1...Wall base material, 11,11...Substrate, 1
2, 12... Inorganic layer, 13, 13... Waterproof layer,
14, 14...butt end surface, 15... recess,
17... Convex portion, 2... Joint portion, 3... Sealing material, 31... Foam, 32, 32... Adhesive material, H
... joint space.

Claims (1)

[Claims for Utility Model Registration] A pair of wall base materials comprising a waterproof layer provided on a substrate made of plywood, fiberboard, etc., and an inorganic layer made of a mixture of cement and foamed synthetic resin particles formed on the waterproof layer. In the case where a sealing material made of a discontinuous pore foam having an adhesive layer on at least one side is sandwiched in the joint space of the butt joint, the center part in the thickness direction of the butt end surfaces of both wall base materials is formed deeply. A construction characterized in that the joint space of the butt joint has a substantially diamond-shaped cross section, and the sealing material in the joint space is clamped in a state in which the upper and lower parts of the joint space are tightly compressed. Joint structure of wall base material.