JP2002047744A - Joint structure and jointing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing compound capable of easily preventing the trouble caused by a cohesive failure of the sealing compound or the trouble caused by a bird damage. SOLUTION: An elastic sealing compound 3 is executed to the outside of a back-up material 2 filling in a void between adjoining wall materials 1 arranged on the surface of building 6 or the like, and a sealing compound 4 with a tape-like recess section having a groove-shaped recess section 4a in the approximately central part is executed to the outside of the elastic sealing compound 3. The sealing compound 4 with a recess is formed of a resin material such as acrylic resin or the like, and it is colored to match it with the wall materials 1, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure such as a curtain wall and a method for forming a joint.

[0002]

2. Description of the Related Art With the enforcement of the "Act on Promotion of Ensuring Quality of Houses", dealing with failures (water leakage etc.) due to breakage of sealing materials has become a major issue for contractors. There are many failure cases of the outer wall sealing material, and failures due to cohesive failure of the sealing material 11 in the working joint such as the PCa curtain wall 10 (rupture 13) occupy the most as shown in FIG. In addition, when the bird 13 such as a crow beaks the sealing material 11 with a beak, the sealing material may be damaged or destroyed 14 as shown in FIG. As a solution to the bird damage problem, for example, Japanese Patent Application Laid-Open
As disclosed in Japanese Patent Application Laid-Open No. 0-102339 and the like, a method of arranging a sheet-like resin film or the like at a surface or a depth of 10 mm or less from the surface while the amorphous sealing material does not solidify, As shown in the publication, there is a method of attaching hard beads to the surface of a sealing material.

[0003]

However, these methods are only measures against bird damage. The cohesive failure of the sealing material at the working joint part is due to the inappropriate sealing material or inappropriate joint width and depth, and it is necessary to select the appropriate sealing material and secure the appropriate joint width and depth. Although studies have been conducted over the construction, there are still many reports of cohesive failure of sealing materials.

An object of the present invention is to provide a joint structure and a jointing method which can easily prevent a failure due to cohesive failure of a sealing material and a failure due to bird damage.

[0005]

In order to solve the above problems, the invention according to claim 1 is, for example, as shown in FIG. 1, between an exterior material (for example, a wall material 1) disposed adjacent to the surface of a building. Is a joint structure formed by sealing the gap with a sealing material. The joint structure is constructed via an elastic sealing material (3) outside the backup material (2) filled in the gap, and the gap is formed substantially at the center. It is characterized in that it comprises a sealing material with a recess (4) having a recess (4a) in parallel.

According to the first aspect of the present invention, a sealing material with a concave portion having a concave portion substantially in the center thereof and substantially parallel to the gap is provided.
By applying the elastic sealing material to the outside of the backup material filled in the gap via the elastic sealing material, the concave portion of the sealing material with the concave portion absorbs contraction and expansion of the joint and reduces stress applied to the joint. Thereby, failure of the joint due to cohesive failure (breakage of the joint) can be prevented.

According to a second aspect of the present invention, there is provided the joint structure according to the first aspect, wherein the sealing material with concave portions is formed of a resin material.

Here, examples of the resin-based material forming the sealing material with concave portions include plastics such as acrylic resin, vinyl chloride, polyamide, polystyrene, polyethylene, acrylonitrile, glass fiber reinforced plastic, and carbon fiber reinforced plastic. .

According to the second aspect of the present invention, since the sealing material with concave portions is made of a resin material, birds cannot be attacked due to the hardness of the resin and the like, so that bird damage can be prevented. it can.

[0010] The third aspect of the present invention is the first or second aspect.
The joint structure according to any one of the preceding claims, wherein the sealing material with concave portions can be colored in any color.

According to the third aspect of the present invention, the sealing material with the concave portion can be colored in an arbitrary color, so that the sealing material can be colored according to the will of the designer or the orderer. Can be improved.

The invention according to claim 4 is the first or second invention.
The joint structure according to claim 1, wherein, as shown in FIG. 6, for example, the sealing material with the concave portion is transparent, and the elastic sealing material colored in an arbitrary color is visible through the sealing material with the concave portion. Features.

According to the fourth aspect of the invention, the arbitrarily colored elastic sealing material can be seen through the transparent concave sealing material, so that the aesthetic appearance and the design can be improved. Further, since the sealing material with the concave portion is transparent, it is possible to check the filling state of the elastic sealing material.

The invention according to claim 5 is the invention according to claims 1, 2, and 3
Or the joint structure according to any one of 4, wherein the sealing material with concave portions is in a tape shape as shown in FIG. 4, for example.

According to the fifth aspect of the present invention, since the sealing material with concave portions is formed in a tape shape, it is not necessary to perform a complicated construction work when applying the sealing material with concave portions on the elastic sealing, and the construction can be performed. It can be done in a short time.

According to a sixth aspect of the present invention, there is provided the joint structure according to the fifth aspect, wherein, as shown in, for example, FIG.
b) has a convex portion (4c).

According to the sixth aspect of the present invention, by providing the convex portion on the surface of the sealing material with the concave portion to be joined with the elastic sealing material, the adhesiveness of the sealing material with the concave portion to the elastic sealing material is improved, It is also possible to prevent the displacement of the sealing material with concave portions.

According to a seventh aspect of the present invention, there is provided a joint joining method for sealing joints in which a gap between exterior members arranged adjacent to a surface of a building is sealed with a sealing material, wherein a backup material is filled in the gap. Then, an elastic sealing material is applied to the outside of the backup material, and a sealing material with a concave portion formed of a resin material and having a concave portion at a substantially central portion is formed outside the elastic sealing material. It is characterized by being constructed in parallel.

The space between the exterior materials is filled with a backup material and an elastic sealing material, and outside the elastic sealing material,
By applying a sealing material with a concave portion having a concave portion at a substantially central portion so that the concave portion is substantially parallel to the gap, the concave portion of the sealing material with the concave portion absorbs contraction and expansion of the joint, so that it is applied to the joint. Stress can be reduced. Therefore, joint failure (joint breakage) due to cohesive failure can be prevented. In addition, since the sealing material with concave portions is formed of a resin-based material, the sealing material can be made hard enough to prevent birds from attacking, thereby preventing bird damage.

[0020]

Embodiments of the present invention will be described below in detail with reference to the drawings.

First, the structure of the joint for providing the sealing material with the concave portion will be described. As shown in FIG. 1, a gap between two adjacent wall materials (exterior materials) 1 is filled with a backup material 2, and the outside of the backup material 2 is filled with an elastic sealing material 3. Here, the backup member 2 and the elastic sealing member 3 are well-known, and the backup member 2 is made of a material having an appropriate elasticity, for example, urethane foam, styrene foam, plastic, rubber material, or the like. The elastic sealing material 3 is a material obtained by adding a crosslinking agent or a catalyst to a base polymer such as polydiorganosiloxane or silyl-modified polyether, and curing with moisture or oxygen in the air. This is a sealing material which is a paste in the form of a fluid or non-fluid, and which becomes a rubber-like elastic body when cured. The joints 5 are formed by applying the concave sealing material 4 to the outside of the elastic sealing material 3.

The recessed sealing material 4 is formed of a resin material such as plastic, and is formed of, for example, acrylic resin, vinyl chloride, polyamide, polystyrene, polyethylene, acrylonitrile, glass fiber reinforced plastic, carbon fiber reinforced plastic, or the like. It is formed in such a hardness that the beak of birds such as crows can not be crushed. Further, as shown in FIG. 4, the tape-like shape has a groove-shaped concave portion 4a formed in the center portion, and has a shape in which convex portions 4c are provided at substantially equal intervals on a surface (back surface) 4b in contact with the elastic sealing material 3. There is an arbitrary color according to the color of the wall material 1 and the will of the designer or the orderer. It is assumed that the width of the tape-shaped sealing material 4 with concave portions is formed in accordance with the width of the joint 5 on which the sealing material 4 with concave portions is applied.

The recessed sealing material 4 is placed on the elastic sealing material 3 filled outside the backup material 2.
It is assumed that the concave portion 4a is substantially parallel to the gap between the wall materials 1 and that the elastic sealing material 3 is completely covered, and is performed before the elastic sealing material 3 is completely cured. As shown, the sealing material 4 with concave portions and the elastic sealing material 3 can be completely adhered.

The joint 5 formed as described above is subjected to, for example, a case where a contraction force is applied as shown in FIG. 2A or a case where an expansion force is applied as shown in FIG. 2B. In addition, the stress applied to the joint 5 can be absorbed and reduced by the concave portion 4a of the sealing material 4 with the concave portion, and the joint 5 can be prevented from causing cohesive failure such as breakage. For this reason, it is considered that stress is concentrated on the sealing material 4 with concave portions, and the portion 7 where the plurality of wall materials 1 of the building 6 gather (FIG. 3)
), And may be installed at all joints 5 of the building 6, or may be installed only at a portion where this stress is considered to be concentrated.

The sealing material 4 with concave portions can be made into a transparent tape as shown in FIG. 6 by using a transparent acrylic resin. In this case, the elastic sealing material inside the sealing material 4 with concave portions is used. The material 3 is colored to an arbitrary color according to the color of the wall material 1 and the will of the designer or the orderer, so that the elastic sealing material 3 can be visually observed through the sealing material 4 with concave portions.

The unsealed sealing material 4 with concave portions can be wound in a roll with the concave portions 4a overlapped as shown in FIG.

As described above, according to the joint structure and the jointing method of the above-described embodiment, the sealing material 4 with the concave portion provided with the concave portion at the center portion is installed on the joint 5, and the concave portion 4 a is substantially parallel to the joint 5. With the provision, the stress due to the contraction or expansion applied to the joint 5 can be reduced by the concave portion 4a.
A failure due to cohesive failure such as breakage at the joint 5 does not occur. In addition, the sealing material 4 with concave portions is made of a resin-based material, and has a hardness that birds can not compromise, so that
Bird damage can also be prevented. Further, by forming the sealing material 4 with concave portions into a tape shape and providing the convex portions 4c on the joint surface 4b with the elastic sealing material 3, construction can be easily performed, and the construction time can be shortened.
The adhesiveness of the recessed sealing material 4 to the elastic sealing material 3 can be improved, and displacement can be prevented.

The recessed sealing material 4 is colored to an arbitrary color according to the color of the wall material 1 or the will of the designer or the orderer, or the elastic sealing material 3 is colored by the color of the wall material 1, the designer or the orderer. By coloring the sealing material with recesses 4 in an arbitrary color in accordance with the intention of the user, the aesthetics and design of the wall can be improved. further,
When the recessed sealing material 4 is made transparent, it is possible to check the filling state of the elastic sealing material at the time of construction. In addition, since the recessed sealing material 4 can be wound into a roll, storage of the recessed sealing material 4 that has not been performed can be efficiently performed.

In the above embodiment, the sealing material with concave portions is in a tape shape. However, a sealing material with concave portions may be formed by directly applying a resin material on the elastic sealing. Also, the concave portion of the sealing material
Although the present invention is not limited to this, the present invention is not limited to this, and the shape of the concave portion is arbitrary as long as the stress can be reduced. The shape and the like of the joint portion are also arbitrary, and it goes without saying that the specific detailed structure and the like can be appropriately changed.

[0030]

According to the first aspect of the present invention, a sealing material with a recess is provided outside the backup material filled in the gap via an elastic sealing material, and the gap is formed substantially at the center of the sealing material with the recess. By providing a concave portion substantially parallel to the above, the concave portion can absorb the contraction and expansion applied to the joint such as the working joint portion, and can alleviate the stress applied to the joint. Therefore, joint failure (joint breakage) due to cohesive failure is prevented.

According to the second aspect of the present invention, since the sealing material with the concave portion is made of a resin material, the sealing material with the concave portion can be made hard enough to prevent birds from being crushed. Harm can be prevented.

According to the third aspect of the present invention, the sealing material with the concave portion can be colored in any color, so that the aesthetic appearance and the design can be improved.

According to the fourth aspect of the present invention, since the sealing material with the concave portion is transparent so that the inside of the elastic sealing material can be arbitrarily colored, the aesthetic appearance and the design can be improved and the elasticity can be improved. The filling state of the sealing material can be checked.

According to the fifth aspect of the present invention, since the sealing material with the concave portion is formed in a tape shape, the sealing material with the concave portion can easily be applied on the elastic sealing material. Also, no construction time is required.

According to the sixth aspect of the present invention, the adhesiveness of the concave sealing material to the elastic sealing material is improved by the convex portions provided on the surface of the sealing material with concave portions that are joined to the elastic sealing material. Further, the displacement of the sealing material with the concave portion is also prevented.

According to the seventh aspect of the present invention, the recess of the recessed sealing material having a recess at a substantially central portion is formed outside the backup material and the elastic sealing material filled in the space between the adjacent exterior materials. By constructing the joint so as to be substantially parallel to the above, the concave portion absorbs the contraction and expansion applied to the joint and can reduce the stress applied to the joint, so that the joint failure due to cohesive failure ( Joint breakage) can be prevented. Further, since the sealing material with concave portions is formed of a resin-based material, birds can no longer be attacked due to the hardness of the resin, so that bird damage can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a joint portion showing a joint structure in which a sealing material with a concave portion is applied as an example to which the present invention is applied.

2A and 2B are cross-sectional views of joints showing a state in which stress is applied to joints on which a sealing material with concave portions in FIG. 1 is applied, and FIG. 2A is a diagram showing a case where a contraction force is applied to joints; () Is a diagram showing a case where an expansion force is applied to the joint.

FIG. 3 is a schematic side view of a building showing an optimum arrangement position of a sealing material with a recess.

FIG. 4 is a perspective bottom view of the sealing material with concave portions, showing the shape of the surface of the sealing material with concave portions in contact with the elastic sealing material.

5A and 5B are diagrams showing a state in which the sealing material with concave portions is wound up in a roll shape as one of methods for storing the sealing material with concave portions, wherein FIG. 5A is a front view of the sealing material roll with concave portions, and FIG. 2A is a cross-sectional view of the sealing material roll with a concave portion taken along line A-A, and FIG. 2C is a side view of the sealing material roll with a concave portion shown in FIG.

FIG. 6 is a perspective view of a joint portion showing a state in which a transparent sealing material with concave portions is applied.

FIG. 7 is a cross-sectional view of a joint showing a state in which cohesive failure occurs in a conventional sealing material.

FIG. 8 is a cross-sectional view of a joint portion showing a state where a bird sticks to a conventional sealing material.

[Explanation of symbols]

 Reference Signs List 1 wall material 2 backup material 3 elastic sealing material 4 sealing material with concave portion 4a concave portion 4b joining surface 4c convex portion 5 joint

Continuation of the front page F term (reference) 2E001 DA01 FA03 FA51 GA07 GA73 GA76 HD03 HD09 HD11 HE01 JA22 JA29 LA03 MA02 MA04 MA06 MA11 MA15

Claims (7)

[Claims] 1. A joint structure in which a gap between exterior materials arranged adjacent to a surface of a building is sealed with a sealing material, wherein an elastic sealing material is provided outside a backup material filled in the gap. A joint structure comprising a sealing material with a concave portion having a concave portion substantially in the center thereof and having a concave portion substantially parallel to the gap. 2. The joint structure according to claim 1, wherein said sealing material with concave portions is formed of a resin material. 3. The sealing material with a concave portion can be colored in an arbitrary color.
Joint structure described. 4. The joint according to claim 1, wherein the sealing material with a recess is transparent, and the elastic sealing material colored in an arbitrary color is visible through the sealing material with a recess. Construction. 5. The joint structure according to claim 1, wherein the sealing material with concave portions is in a tape shape. 6. The joint structure according to claim 5, wherein the sealing material with a concave portion has a convex portion on a joint surface with the elastic sealing material. 7. A joint filling method for joints, wherein a gap between exterior materials arranged adjacent to a surface of a building is sealed with a sealing material, wherein a backup material is filled in the gap and the backup material is filled. Applying an elastic sealing material on the outside, outside the elastic sealing material, a sealing material with a concave portion formed of a resin material and having a concave portion in a substantially central portion,
A jointing method, wherein the concave portion is constructed so as to be substantially parallel to a gap.