JP2529792B2 - Seal member - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal member which is fitted into a joint at a joint portion such as an outer wall to prevent rainwater or the like from entering through the joint.

[0002]

2. Description of the Related Art Conventionally, joints formed on joints such as outer walls of buildings are filled with a sealing material for the purpose of preventing water leakage and maintaining airtightness. I was applying cosmetic materials.

[0003]

By the way, the above-mentioned sealing material sometimes shrinks due to aging with the passage of time. Due to such shrinkage, cracks or the like occur in the sealing material itself. Therefore, there is a problem that a reliable water leakage prevention effect cannot be obtained.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a seal member capable of obtaining a reliable water leakage prevention effect on joints such as outer walls.

[0005]

A seal member according to a first aspect of the present invention is a seal member which is inserted into a joint formed between walls through a sealing material to prevent water leakage at the joint. The seal member is formed with a bifurcated foot portion on the front side in the insertion direction, the foot portion is made of an elastic body whose outer surface side is bonded to the sealing material, and an inner surface side is made of an elastic body which is not bonded to the sealing material, It is characterized by being integrally molded with these elastic bodies.
A seal member according to a second aspect of the invention is a seal member that is inserted into a joint formed between walls via a sealing material to prevent water leakage at the joint, and the seal member is on the front side in the insertion direction. It is characterized in that a bifurcated foot portion is formed on the inner surface of the foot, and a release material for preventing adhesion with the sealing material is applied to the inner surface side of the foot portion.

[0006]

According to the seal member of the first aspect of the invention, since the inner side of the bifurcated foot portion of the seal member is formed of the elastic body that does not adhere to the sealing material, when the sealing material contracts due to aging, The sealing material is separated from the inner surface side of the foot portion, so that cracking due to contraction of the sealing material is prevented. In addition, since the foot portion is formed in a bifurcated shape, when the sealing material contracts, the foot portion is easily elastically deformed in the contracting direction of the sealing material, and the generation of cracks due to the contraction of the sealing material is prevented. It

According to the seal member of the second aspect of the present invention, since the release material for preventing the adhesion with the sealing material is applied to the inner surface side of the bifurcated foot portion of the sealing member, the sealing material shrinks due to aging. At this time, the sealing material is separated from the inner surface side of the foot portion, and the generation of cracks due to the contraction of the sealing material is prevented. Further, since the foot portion is formed in a bifurcated shape, when the sealing material contracts, the foot portion is easily elastically deformed in the contracting direction of the sealing material, and the generation of cracks due to the contraction of the sealing material is prevented. .

[0008]

Embodiments of the seal member of the present invention will be described below with reference to the drawings. First, the seal member of the first embodiment will be described with reference to FIGS. 1 and 2. In FIG. 1, reference numeral 1
Is a seal member. The seal member 1 includes an outer wall 2,
It is inserted into the second joint 3 via the sealing material 4.
The seal member 1 is composed of a seal member main body 5 and bifurcated legs 6 formed on the front side in the insertion direction of the seal member main body 5.

The seal member 1 has the legs 6, 6
The outer surface side of the seal member body 5 is made of an elastic body that adheres to the sealing material 4, and the seal member main body 5 including the inner surface sides of the legs 6,
Is made of an elastic body that does not adhere to the sealing material 4, and these elastic bodies are integrally molded. here,
An elastic body that can be used for the seal member body 5 is, for example, ethylene propylene rubber (EPM, EPDM), and an elastic body that can be used on the outer surface side of the foot portions 6 is, for example, chlorosulfonated. Polyethylene (CS
There are synthetic rubbers such as M).

Further, the seal member 1 is provided with pleated projections 7, 7 ... Which are continuous in the longitudinal direction on both sides thereof. The width of the seal member 1 is slightly larger than the joint width of the joint 3. Therefore, when the seal member 1 is inserted into the joint 3, the side portion of the seal member 1 is brought into close contact with the side surfaces 2a, 2a of the outer walls 2, 2 forming the joint 3 by its elastic force.

As described above, according to the seal member 1 of the first embodiment, the side portions thereof are in close contact with the side surfaces 2a, 2a of the outer walls 2, 2 and the side surfaces of the seal member 1 and the outer walls 2, 2 are in contact with each other. Since the sealing material 4 is filled between 2a and 2a, it is possible to reliably prevent water leakage from the joint 3.

Here, the sealing material 4 undergoes a secular change with the passage of time and gradually contracts.
In the sealing member 1 of the embodiment, since the inner surface side of the foot portions 6 and 6 does not adhere to the sealing material 4, when the sealing material 4 contracts, as shown in FIG. The material 4 and the inner surfaces of the legs 6, 6 are separated from each other. Therefore, no unnecessary force is applied to the shrinking sealing material 4, and cracking of the sealing material 4 is prevented.

Further, the outer surface side of the foot portions 6 and 6 is adhered to the sealing material 4, but since the foot portions 6 and 6 are bifurcated, when the sealing material 4 contracts, this As the sealing material 4 contracts, it easily elastically deforms. Therefore, no unnecessary force is applied to the shrinking sealing material 4, and cracking of the sealing material 4 is prevented.

That is, by using the sealing member 1 of the first embodiment to seal the joints 3 of the outer walls 2 and 2, even if the sealing material 4 contracts due to secular change, the sealing material 4 cracks. It is possible to make a joint in which a reliable water leakage effect is maintained without causing water leakage.

Next, the seal member of the second embodiment will be described with reference to FIGS. 3 and 4. In FIG. 3, reference numeral 11
Is a seal member of the second embodiment. This seal member 11 has the same shape as that of the seal member 1 of the first embodiment, that is, the bifurcated legs 16 and 16 and the plurality of protrusions 17, 17 ... Are formed by an elastic body that adheres to the sealing material 4. It is integrally molded into a different shape. Then, on the inner surface side of the legs 16, 16 of the seal member 11, a release material 21 for preventing adhesion with the sealing material 4 is applied. Here, as the elastic body that can be used for the seal member 11, for example, chlorosulfonated polyethylene (CS
There are synthetic rubbers such as M). As the release material 21, for example, silicone oil, low wax, or the like can be used.

Further, according to the seal member 11 as described above, the release material 21 for preventing the adhesion to the sealing material 4 is applied to the inner surface side of the foot portions 16 and 16, so that the first embodiment described above is adopted. As with the seal member 1 of FIG. 4, since the inner surfaces of the legs 16 and 16 and the sealing material 4 are separated from each other as shown in FIG. The generation of cracks is prevented.

Further, as in the first embodiment, the legs 16 and 16 are bifurcated so that they easily elastically deform as the sealing material 4 contracts. Therefore, the sealing material 4 is prevented from cracking.

That is, the seal member 11 of the second embodiment.
By using the sealant to seal the joints 3 of the outer walls 2 and 2, even if the sealing material 4 contracts due to aging, the joint material 4 does not crack and the reliable water leakage effect is maintained. Can be

In the above embodiment, the seal member 1, 11 is used for the joint 3 formed on the outer wall 2, 2. However, the joint 3 to be sealed by the seal member 1, 11 is the outer wall 2. It is not limited to 2, and any wall joint may be used. Further, the specific shapes of the seal members 1 and 11 of the above embodiment are not limited to the embodiment.

[0020]

As described above, according to the seal member of the present invention, the following effects can be obtained. Since the inner surface of the foot does not adhere to the sealing material, even if the sealing material shrinks due to aging over time, the sealing material and the inner surface of the foot are separated, and the foot is Since the sealing material is formed in a bifurcated shape, it is easily elastically deformed as the sealing material contracts, so that it is possible to prevent the undesired force from acting on the contracting sealing material. Therefore, it is possible to provide a joint in which a reliable water leakage effect is maintained without causing cracks in the sealing material.

[Brief description of drawings]

FIG. 1 is a sectional view of a seal member and a part of an outer wall for explaining a seal member according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a part of the seal member and the outer wall of the first embodiment in which the sealing material is contracted.

FIG. 3 is a sectional view of a seal member and a part of an outer wall for explaining a seal member according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of a part of the seal member and the outer wall of the second embodiment in which the sealing material is contracted.

[Explanation of symbols]

 1, 11 Seal member 2 Outer wall 2a Side surface 3 Joint 4 Sealing material 5, 15 Seal member main body 6, 16 Foot 21 Release material

Claims (2)

(57) [Claims] 1. A seal member that is inserted into a joint formed between walls through a sealing material to prevent water leakage at the joint, the seal member having a bifurcated foot on the front side in the insertion direction. A portion is formed, the foot portion is made of an elastic body that adheres to the sealing material on the outer surface side, and an elastic body that does not adhere to the sealing material on the inner surface side, and is integrally molded by these elastic bodies. A seal member to do. 2. A seal member which is inserted into a joint formed between walls through a sealing material to prevent water leakage at the joint, wherein the seal member has a bifurcated leg on the front side in the insertion direction. A seal member, characterized in that a portion is formed, and a release material for preventing adhesion with the sealing material is applied to the inner surface side of the foot portion.