JP2003041671A - Water-stop construction for exterior wall joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-stop construction for exterior wall joint capable of realizing the state of definite water stop. SOLUTION: Foamed seal material 5 in compressed state in right and left directions is installed in an expansible state by adhering both the right and left side surfaces to each surface putting the depth joint space portion respectively. In addition, a primary water-stop compound 4 consisting of gasket is fitted to the inside of the joint space placed at this side of the deep foamed seal material 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure for outer wall joints.

[0002]

2. Description of the Related Art Conventionally, as a waterproof structure for vertical joints between outer wall members, as shown in FIG. 4, both outer wall members 51, 51 are provided on the back side of a joint space portion 52 between the outer wall members 51, 51. Install a strip-shaped dry secondary water stop material 53 to pass to
An elastic rubber-like dry primary water blocking material 54 is fitted into the joint space 52.

[0003]

However, due to the movement of the outer wall panel after aging, the water stoppage of the primary waterstop material 54 becomes insufficient, and only the secondary waterstop material 53 behind the joint space portion 52 is provided. In some cases, there was no choice but to rely on a water stop, and it was not always possible to say that the water stop structure was perfect.

In view of the above problems, it is an object of the present invention to provide a waterproof structure for the outer wall joint which can realize a solid waterproof state.

[0005]

[Means for Solving the Problems] The above-mentioned problem is solved in that the foam seal material in a laterally compressed state sandwiches the inner joint space portions on both left and right sides in the inner region in the joint space portion between the outer wall members. This is solved by a waterproof structure of the outer wall joint, which is installed so that it can be expanded and contracted by adhering to the surface.

In this waterproof structure, the joint is firmly sealed by the foam sealing material. That is, the foam sealing material is a so-called sponge-like material, which can greatly expand and contract without swelling or thinning,
The foam seal material that is compressed in the left-right direction does not swell in the front-back direction or lose weight due to changes in joint width, and it expands and contracts greatly in the left-right direction without difficulty, even if the joint width increases over time. You can keep track of the water tightly by following it. Water is firmly stopped between the foam sealing material and the outer wall material by their adhesion.

Moreover, since the foam sealing material is provided in the joint space portion, it can be installed from the outdoor side and can be installed easily.

In addition, since it is provided in the inner region of the joint space portion, it is difficult to be visually recognized from the outside and the appearance of the outer wall joint is not damaged.

In the above water-stop structure, when the joint sealing material is installed in the joint space portion on the front side of the foam sealing material at the back, the foam sealing material can be hidden behind the joint sealing material. The appearance of the joint can be improved. Moreover, even if the joint width shrinks, the foam sealing material does not swell in the front-rear direction, and / or the foam sealing material absorbs the swelling even if the joint sealing material swells in the front-rear direction. It is possible to effectively prevent the blocking material from being pushed out to the outside.

When the joint closing material is made of a primary water blocking material,
Even if the water blocking performance of this primary water blocking material deteriorates over time due to movement of the outer wall panel, etc., the foam sealing material behind it functions as a secondary water blocking material to maintain the water blocking state of the joint firmly. You can go. In particular, even when the water blocking material cannot be installed on the back side of the joint space portion, the foam sealing material can firmly stop the water blocking.

There is no particular limitation on the installation position or size of the foam sealing material in the joint space. That is, the basic problem is that in the joint space portion between the outer wall members, the foam seal material in the laterally compressed state is installed so that it can expand and contract by adhering its left and right side surfaces to the respective surfaces sandwiching this inner joint space portion. It is possible to solve the problem by the water-stop structure of the outer wall joint, which is characterized in that For example, the foam sealing material may be installed on the near side in the joint space portion. In that case, even if the joint width expands or contracts, it does not become thin or bulge in the front-rear direction. It is possible to prevent poor appearance.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

In the water blocking structure of the first embodiment shown in FIG. 1, reference numerals 1 and 1 denote left and right outer wall members.
Behind the vertical joint space portion 2 between, the structural frame 3 of the building, the pillar 3 in the present embodiment is provided. And joint 2
Is stopped by each of the primary to tertiary waterproofing materials 4, 5, and 6.

That is, the tertiary water blocking material 6 is made of a band-shaped dry sealing material, and the band-shaped sealing material 6 is attached to the surface of the pillar 3 on the outdoor side, and both outer wall materials on the back side of the joint space part 2. It is installed so as to pass between 1 and 1, and the joint 2 is stopped.

The secondary water blocking material 5 is made of a foam sealing material, and is installed in the inner region of the joint space 2 between the outer wall materials 1, 1. The foam sealing material 5 is provided with adhesive layers 7, 7 made of butyl rubber or the like on both left and right side surfaces thereof,
The adhesive layers 7 and 7 are adhered to the side surface portions of the outer wall members 1 and 1 that sandwich the inner region in the joint space portion 2 to keep the joint 2 in a water-stop state. The foam sealing material 5 installed in the joint space 2 is compressed in the left-right direction, and the width dimension in the left-right direction in the natural state is larger than the width dimension of the joint 2.

The mounting of the foam sealing material 5 is shown in FIG.
As shown in, the foam sealing material 5 having the release papers 8 and 8 attached to the outside of the adhesive layers 7 and 7 and the opening stopper 9 are attached,
It is compressed in the left-right direction to be in a state of being narrower than the joint width, and then inserted from the outdoor side into the inner region of the joint space 2.
Thereafter, as shown in FIG. 2B, the opening stopper 9 is removed leaving the foam sealing material 5 and the release papers 8 and 8 are removed. By removing the stopper 9 from the foam sealing material 5, the size of the foam sealing material 5 is increased in the left-right direction.
As shown in (c), the adhesive layers 7, 7 on both side surfaces of the foam sealing material 5 are bonded to the side surface portions of the left and right outer wall materials 1, 1. The foam sealing material 5 in the adhesively installed state is in a laterally compressed state in which a force to swell in the lateral direction is still left. Then, the primary water blocking material 4 may be fitted.

The primary water-stopping material 4 is composed of a rubber-like dry joint material having elasticity, that is, a so-called gasket. This gasket 4 is located in the joint space portion 2 on the front side of the foam sealing material 5 at the back. The joint 2 is fitted and elastically abuts on the side surface portions of the outer wall members 1 and 1 that sandwich the joint 2 to stop the joint 2 from water.

In the joint water-stop structure, first, the gasket 4 as the primary sealing material stops the joint water. Then, when the outer wall panel moves due to secular change and the joint width increases, and the gasket 4 does not completely stop the water, the foam sealing material 5 that is the secondary water stop material stops the water.

That is, the foam sealing material 5 has a property of being deformed like a sponge without difficulty, and the foam sealing material 5 adheres to the side surfaces of the outer wall materials 1 and 1 which sandwich the joint 2 in the laterally compressed state. By doing so, even if the joint width increases over time, it can be reasonably expanded in the left-right direction, and unlike the case of the gasket 4, it is possible to maintain a water-stop state with a margin. Further, even when the joint width becomes small, the foam sealing material 5 does not bulge in the front-rear direction, and the foam sealing material 5 does not try to push the gasket 4 out. Although the secondary water stop made of the foam sealing material 5 makes the water stop state substantially perfect, the third water stop material 6 is provided just in case.

Further, as described above, by providing the primary water blocking material 4, the foam sealing material 5 can be hidden by the primary water blocking material 4, and the appearance of the joint can be improved. be able to.

The joint water stop structure of the second embodiment shown in FIG. 3 (a) is a case where a wet type sealing material 10 is loaded instead of a dry type as a primary sealing material. Even when the wet sealing material 10 is cut due to the movement of the joint width, the foam sealing material 5 on the back side can secondarily maintain a solid water stop state.

The joint water stop structure of the third embodiment shown in FIG. 3B does not include the primary sealing material. Also in this case, the joint 2 can be firmly stopped by the foam sealing material 5, and since the foam sealing material 5 is provided in the inner region of the joint space portion 2, it is difficult to see from the outside.
It does not make the joint appearance look bad.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the case where the gasket 4 or the wet sealing material 10 is used as the primary sealing material is shown, but other sealing materials may be used. In addition, in the above-described embodiment, the primary sealing materials 4 and 10 having the water stopping function are thus provided in the joint space portion on the front side of the foam sealing material 5 in the interior of the joint space portion 2 as described above. However, it is also possible to replace the primary sealing materials 4 and 10 with a joint blocking material having no or poor water-stopping function, and to perform water-stopping mainly by the foam sealing material 5. . Needless to say, the present invention can also be used for stopping water in horizontal joints. Further, the strip-shaped water blocking material 6 provided on the back side of the joint space portion may be omitted.

[0024]

Since the present invention is as described above, it is possible to realize a solid water-stop state.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing a joint waterproofing structure of a first embodiment.

FIG. 2A to FIG. 2C are cross-sectional plan views sequentially showing the method of attaching the foam sealing material.

FIG. 3A is a sectional plan view showing a joint water stop structure of the second embodiment, and FIG. 3B is a sectional plan view showing a joint water stop structure of the third embodiment.

FIG. 4 is a cross-sectional plan view showing a conventional joint waterproofing structure.

[Explanation of symbols]

1 ... Outer wall material 2 joint space 4 ... Gasket (primary water blocking material, joint closing material) 5: Foam sealing material 7 ... Adhesive layer 10 ... Wet sealing material (primary waterproof material, joint sealing material)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroshi Kawakami             6-6 Sakyo 6-2, Nara, Nara Stock Association             Inside Yamato Research Institute (72) Inventor Masaaki Suzuki             6-6 Sakyo 6-2, Nara, Nara Stock Association             Inside Yamato Research Institute F-term (reference) 2E001 DA01 FA04 FA51 FA52 GA82                       HE01 HE02 HF02 LA16 MA02                       MA04 MA13

Claims (4)

[Claims] 1. A back region in a joint space between outer wall members,
A waterproof structure for outer wall joints, characterized in that the foam sealing material in a compressed state in the left-right direction is installed so as to be expandable and contractible by adhering the left and right side surfaces to the respective surfaces sandwiching the inner joint space portion. 2. The waterproof structure for outer wall joints according to claim 1, wherein the joint closing material is installed in the joint space portion on the front side of the foam sealing material at the back. 3. The water blocking structure for an outer wall joint according to claim 1, wherein the joint sealing material is a primary water blocking material. 4. A foam seal material in a laterally compressed state is installed in a joint space between outer wall members so as to be expandable and contractible by adhering its left and right side surfaces to the respective surfaces sandwiching the joint space portion. The water-stop structure of the characteristic outer wall joint.