JP2614404B2 - Joint waterproof structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint waterproof structure formed at the end of an exterior material constituting an outer wall.

[0002]

2. Description of the Related Art Conventionally, as exterior materials constituting an outer wall, concrete exterior materials such as ALC and ceramic exterior materials have been known. The waterproof structure of joints formed between the ends of these exterior materials is known. For example, it is as shown in FIGS. For example, as shown in FIG. 5, in the case of a concrete exterior material 1 (thickness: 50 mm) such as ALC, a joint gap 10 of about 10 mm is formed between the ends of the exterior material 1. E is firstly provided as a secondary waterproof in the joint gap 10.
The backup material 11 such as PDM rubber was press-fitted, and then the caulking material 4 was filled as primary waterproof.

Further, in the case of a ceramic exterior material 1 as shown in FIG. 6, the thickness is as thin as 12 mm, and joints which are open to the outer surface at the end portions of the exterior material 1 butted over both exterior materials 1 are provided. A recess 2 is formed, and the joint recess 2 is filled only with a caulking material 4 as a primary waterproof,
It is currently not waterproof.

[0004]

However, FIG.
In the conventional example shown in (1), since the backup material 11 such as EPDM rubber is press-fitted, it is not possible to cope with variations in the size of the joint gap 10 (for example, the gap is 10 mm in design). However, there is a problem that it is difficult to automate the press-fitting of the backup material 11 such as EPDM rubber, it takes a lot of work, and the material cost increases.

Further, in the conventional example shown in FIG. 6, only the caulking material 4 as the primary seal is filled and the secondary waterproofing is not performed, and the waterproofing at the joint portion is not necessarily sufficient. Since the thickness is as thin as, for example, 12 mm, the secondary waterproofing cannot be performed by press-fitting the backup material 11 such as EPDM rubber as shown in FIG.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide waterproofing of joints in two stages of primary waterproofing and secondary waterproofing. In addition, the primary waterproofing and the secondary waterproofing can be performed in a factory by automation, and can be applied even if the thickness of the exterior material is small. Furthermore, it is possible to cope with a variation in the size of the joint recessed portion and to provide reliable waterproofing. The joint is to provide a waterproof structure.

[0007]

The joint waterproof structure according to the present invention comprises a joint recess 2 which is opened at the outer surface formed at the abutting portion of the ends of the exterior material 1 and which is recessed over both exterior materials 1. The bottom of the joint recess 2 is filled and the exterior material 1
The sealing material 3 is made up of a fluid sealing material 3 penetrated between the butted portions and a caulking material 4 filled from above the sealing material 3. The sealing material 3 has good adhesion to the joint recess 2 and the caulking material 4. The feature of the present invention is that it has a performance of not adhering to the above. By adopting such a configuration, the above-described problem of the conventional example is solved and the object of the present invention has been achieved.

[0008]

According to the present invention having the above structure, the bottom of the joint recess 2 is filled and the space between the exterior materials 1 is abutted.
The sealing material 3 having the fluidity that has been impregnated is used to form
Simultaneously with the sealing of the bottom part of the joint material, the sheet penetrates between the ends of the exterior material 1 butted from the bottom of the joint recess 2 and seals the butted part, so that the secondary waterproofing is provided. Sealing material 3 and sealing material 3
The two-stage waterproofing can be performed by the caulking material 4 which becomes the primary waterproofing filled from above. Moreover, with secondary waterproofing
The sealing material 3 is filled at the bottom of the joint recess 2 and
By penetrating between the butting parts of the components 1,
Waterproofing at the bottom of joint recess 2 and butting of exterior materials 1
Double waterproofing with waterproofing between
Thus, more reliable waterproofing can be achieved. And flow
Filling the bottom of the joint recess 2 with a sealing material 3 having a property
In this way, the fluid sealing material 3 can be
One that can penetrate between the butting parts of one
And a sealing material 3 which is secondarily waterproof at the factory.
Can be filled and penetrated by automation between the bottom of the joint recess 2 and the abutting portion between the exterior materials 1 . In addition, since the sealing material 3 has good adhesion to the joint recess 2 and has a performance of not adhering to the caulking material 4, the sealing material 3 which is secondary waterproof adheres to the joint recess 2 but has primary waterproof. Does not adhere to the caulking material 4
As a result, the secondary waterproofing sealing material 3 prevents the three-sided adhesion of the primary waterproofing caulking material 4, and the primary waterproofing caulking material 4 and the secondary waterproofing sealing material 3 interact with each other. In this case, the waterproofing function is independently exerted without adversely affecting the seal, thereby performing double waterproofing. Further, the caulking material 4 which becomes the primary waterproof prevents the sealing material 3 which becomes the secondary waterproof from being deteriorated by ultraviolet rays.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. FIG. 1 shows an embodiment of the present invention. A
Thick concrete exterior material 1 such as LC and PC
A stepped cutout 5 is formed in substantially half of the outer surface of the end surface (for example, 50 mm in thickness) (that is, the front half of the side surface). Then, a plurality of the exterior materials 1 are attached to the outer surface side of a frame material (not shown) to form a wall panel. In this case, the ends of the adjacent exterior materials 1 are abutted against each other. Attached to the frame material. Here, the abutting portion of the end of the adjacent exterior material 1 is a portion where the notch 5 at the rear half of the end surface of the exterior material 1 is not provided. Actually, when the exterior material 1 is butted in a factory, a dimensional error of about 0 to 4 mm of the butted portion occurs, and at the maximum, about 4 mm is provided between adjacent portions of the exterior material 1 where the notch 5 is not provided. Gaps may also occur. In this manner, when the ends of the exterior material 1 are abutted against each other, the joint recess 2 that opens to the outer surface side is formed by the notches 5 in front of the abutting portion. The bottom of the joint recess 2 is filled with a sealing material 3 having fluidity. As the sealing material 3 having fluidity, an acrylic emulsion or a sol-like sealing material according to the acrylic emulsion is used, and the filling may be performed manually or automatically by a filling device. When the bottom of the joint recess 2 is filled with the fluid sealing material 3, the bottom of the joint recess 2 is filled with the fluid sealing material 3 and the exterior material 1 is filled.
Penetrates into the butt portion of the rear half of the side end surface of the rim, and seals the water at the butt portion. In this case, even if a small gap is formed due to a dimensional error between the portions where the notch portions 5 of the adjacent exterior materials 1 are not provided, the fluid sealing material 3 penetrates and seals water in this portion. Further, even if the width of the bottom of the joint recess 2 varies, the bottom of the joint recess 2 can be reliably filled with the fluid sealing material 3, whereby the joint portion can be secondarily waterproofed. After pouring of the sealing material 3, the caulking material 4 is filled from above to fill most of the joint recesses 2, and the caulking material 4 becomes a primary seal. The filling of the caulking material 4 is also automated by the filling device. Here, the sealing material 3 serving as the secondary seal has good adhesion to the joint recess 2 and has a waterproof function, does not adhere to the caulking material 4, has a role of a bond breaker, and further has a primary seal. A material that does not adversely affect the seal by the caulking material 4 is used. As an example of the sealing material 3 serving as a secondary seal, for example, one having the composition shown in Table 1 below is used.

[0010]

[Table 1]

Note) * Copolymer resin of 2-ethylhexyl acrylate, acrylic acid, and acrylonitrile * Adhesion modifier Adhesion modifier A: Additive that increases adhesion to adherend Adhesion modifier B: 1 Next, another embodiment shown in FIG. 2 will be described. That is, in the embodiment shown in FIG. 1, the bottom of the joint recess 2 is flat, but in the embodiment shown in FIG. 2, the bottom of the joint recess 2 is V-shaped, Bottom 2
In this embodiment, a V-shaped bottom 2a at the bottom of the joint recess 2 is filled with a sealing material 3 having fluidity.

In the embodiment shown in FIGS. 1 and 2,
Thick concrete exterior material 1 such as ALC and PC
FIGS. 3 and 4 show a waterproof structure at a butt portion of the thin ceramic-based (for example, 12 mm) exterior materials 1 with each other. In this embodiment, the entire joint recess 2 has a substantially V-shaped or U-shaped cross section, and the bottom of the joint recess 2 is filled with a sealing material 3 having fluidity. The caulking material 4 is filled so as to fill almost the entire joint recess 2.

By the way, a plurality of exterior materials 1 are attached to the outer surface of the frame body as described above, and primary waterproofing by the caulking material 4 and secondary waterproofing by the sealing material 3 are performed on joints between the exterior materials 1. The wall panel is created in a factory, transported to the site, and constructed on the site. The technology of the present invention is to attach the exterior material 1 at the site, and to joint the adjacent exterior materials 1 with each other. In order to achieve waterproofing, the primary waterproofing with the caulking material 4 and the sealing material 3
May be used for secondary waterproofing.

[0014]

According to the present invention, as described above, a joint recess which is opened at the outer surface formed at the abutting portion of the ends of the exterior material and which is depressed over both exterior materials, and a bottom of the joint recess is provided. And between the butting portions of the exterior materials 1
Since it is composed of a sealing material having fluidity that has been infiltrated and a caulking material filled from above the sealing material, the sealing material and the sealing material that are secondary waterproof
2 steps with primary waterproofing caulking material filled from
Of course, it is possible to waterproof
The sealing material is filled into the joint
By penetrating between the butted parts, the bottom of the joint recess
Waterproofing between the butt joints of exterior materials
Double waterproofing with water can be done, more reliable prevention
Water can be produced. Furthermore, since the sealing material serving as the secondary seal has fluidity, when filling the sealing material at a factory, automation is possible and the workability is improved . Joints with flowable sealing material
Filling the bottom of the part with a fluid sealing material
At the same time, it can penetrate between the butting parts of the exterior materials
It can be used for secondary waterproofing in factories.
Place the ring material between the bottom of the joint recess and the butt between the exterior materials.
Can be filled and infiltrated by automation
is there. In addition, since the sealing material serving as the secondary seal has fluidity, it can cope with variations in joint width, and can be used in comparison with conventional EPDM rubber-like waterproofing materials. , Eyes with waterproof by sealing material
Sealing water at the bottom of the ground and where the exterior material meets
Can be made continuously, the water sealing distance can be lengthened, and as a result,
There is an advantage that secondary waterproofing is possible even if the thickness of the exterior material is thin, and the cost is reduced. In addition, since the sealing material has good adhesion to the joint recesses and has the property of not adhering to the caulking material, the sealing material that is secondary waterproof adheres to the joint recesses but is primary waterproof. As a result, the secondary waterproofing sealing material prevents the three-sided adhesion of the primary waterproofing caulking material, so that the primary waterproofing caulking material and the secondary waterproofing sealing material are not mutually bonded. In this case, the waterproofing function is independently exerted without adversely affecting the seal, thereby performing double waterproofing. In addition, the caulking material, which becomes the primary waterproof, can prevent the ultraviolet ray deterioration of the sealing material, which becomes the secondary waterproof.

[Brief description of the drawings]

FIG. 1 is a sectional view of one embodiment of the present invention.

FIG. 2 is a sectional view of another embodiment of the above.

FIG. 3 is a sectional view of still another embodiment of the above.

FIG. 4 is a sectional view of still another embodiment of the above.

FIG. 5 is a sectional view showing a conventional example.

FIG. 6 is a sectional view showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Exterior material 2 Joint recess 3 Sealing material 4 Caulking material

Continued on the front page (72) Inventor Takeo Kajiyama 1-47 Naka, Ishizucho, Hamadera, Sakai-shi, Osaka Sunrise Meisei Co., Ltd. -99629 (JP, U)

Claims (1)

(57) [Claims] 1. A joint recess which is opened at an outer surface formed at an abutting portion between ends of an exterior material and which is depressed over both exterior materials , a joint recess filled at the bottom of the joint recess and the exterior material
It is composed of a sealing material having fluidity permeated between the butt portions and a caulking material filled from above the sealing material, and the sealing material has a good adhesive property with the joint recess and has a performance not to adhere to the caulking material. The joint has a waterproof structure.