JPH11148182A - Waterproof structure of joint section, waterproof material for joint and gasket for joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the waterproof structure of a joint section, in which protrusion from the wall surface of a gasket can be inhibited, a waterproof material for a joint and the gasket for the joint. SOLUTION: The joint between a wall panel 1 and an adjacent wall panel 1 is closed in a watertight manner in the waterproof structure of the joint section. The waterproof structure consists of the waterproof material 3 for the joint installed onto a joint bottom and the gasket 4 for the joint closing the joint, and the surface of the waterproof material 3 and the base of the gasket 4 are joined through a joining means as a face fastener 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint waterproofing structure between a wall panel or the like constituting a wall portion of a building and an adjacent wall panel, a joint waterproofing material attached to the joint bottom, and a joint joint. To a joint gasket that closes off.

[0002]

2. Description of the Related Art In a conventional joint waterproofing structure, a joint gasket for closing a joint between a wall material or a wall panel and an adjacent wall material or a wall panel is attached, thereby making the joint portion watertight. I have. For example, a joint gasket described in Japanese Patent Application Laid-Open No. 6-200569 discloses a gasket main body for closing and waterproofing a joint gap between a wall panel and an adjacent wall panel, and a decoration provided with a stone pattern or the like. Consists of layers.
Further, a waterproof material made of a synthetic resin foam sheet may be attached to the joint bottom. This waterproof material is used as it is on the surface of the foam sheet.

[0003]

However, the prior art described in the above publication has a problem that the joint gasket shrinks or protrudes from the outer wall surface with the passage of time due to a step at the joint. The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a waterproof structure for joints that can prevent the gasket from protruding from a wall surface, a joint waterproofing material, and joints. Is to provide a gasket.

[0004]

According to the first aspect of the present invention,
In a joint waterproofing structure in which a joint between a wall material or a wall panel and an adjacent wall material or a wall panel is closed in a watertight manner, the joint structure includes a joint waterproofing material attached to the joint bottom and a joint gasket closing the joint. The surface of the joint waterproofing material and the bottom surface of the joint gasket are joined by joining means.

According to a second aspect of the present invention, there is provided a joint waterproofing material attached to a joint bottom, comprising a synthetic resin foam sheet, and an adhesive layer provided on one side of the foam sheet and adhered to the joint bottom. And joining means attached to the other side surface.

According to a third aspect of the present invention, there is provided a joint gasket for closing a joint, comprising a gasket main body and joining means attached to a bottom surface of the main body.

[0007] The joining means in the present invention may be any of a hook-and-loop fastener, a double-sided pressure-sensitive adhesive tape, and an adhesive.

(Action) In the joint waterproofing structure according to the first aspect, since the surface of the waterproof material and the bottom surface of the gasket are joined by the joining means, the joining force in the direction perpendicular to the joint bottom is reduced. It works and can prevent the gasket from protruding from the wall.

According to a second aspect of the present invention, there is provided a joint waterproofing material comprising: a synthetic resin foam sheet; an adhesive layer provided on one side of the foam sheet and adhered to the joint bottom; Since one side of this foam sheet is adhered to the joint bottom with an adhesive layer and the other side is joined to the joint gasket by joining means, it is possible to suppress the protrusion from the wall of the gasket. it can.

In the joint gasket according to the third aspect, the joining means is attached to the bottom surface of the main body. Therefore, when the joint gasket is used by joining with the joint waterproofing material attached to the joint bottom by the joining means, The protrusion from the wall surface can be suppressed.

In the inventions according to the first to third aspects, it is preferable to use a hook-and-loop fastener as the joining means, since it is easy to re-attach at the time of construction.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show an embodiment of the present invention. FIG. 1 is a sectional view showing a waterproof structure of a joint portion.
Is a cross-sectional view of a joint, FIG. 3 is a perspective view of a joint waterproof material, FIG.
Is a cross-sectional view of the joint gasket, FIG. 5 is an explanatory view of an outer wall panel used for a joint gasket warp test, FIG. 6 is an explanatory view showing a warped state of the joint gasket, and FIG. 7 is a graph showing a cooling / heating cycle. is there.

In the drawing, 1 is an outer wall panel, 2 is a joint,
3 is a joint waterproofing material, and 4 is a joint gasket. The present embodiment relates to a joint waterproof structure, a joint waterproof material 3 and a joint gasket 4 which constitute the joint waterproof structure.

As shown in FIGS. 1 and 2, the joint waterproof structure of this embodiment is to seal and seal the joint 2 between the outer wall panel 1 and the adjacent outer wall panel 1 in a watertight manner. Underground 21
And a joint gasket 4 for closing the joint 2. The surface of the waterproof material 3 and the bottom surface of the gasket 4 are joined by joining means. In this embodiment, a hook-and-loop fastener 5 is used for the above-mentioned joining means. The hook-and-loop fastener 5 includes a loop portion 51 and a key portion 52 that are fitted to each other. The outer wall panel 1 includes an outer wall material 11 and the face material 1.
1 is attached to the frame 12 (structural member).

The waterproof material 3 attached to the joint bottom 21 is
As shown in FIG. 3, a polyethylene foam sheet 31;
The foam sheet 31 includes an adhesive layer 32 provided on one side of the foam sheet 31 and adhered to the joint bottom 21, and a loop portion 51 of the hook-and-loop fastener 5 attached to the other side. The waterproof material 3 has a length substantially equal to the width of the joint 2 and is attached along the longitudinal direction of the joint 2.

The joint gasket 4 for closing the joint 2 is shown in FIG.
As shown in the figure, the gasket main body 41 is made of a synthetic rubber, and a key portion 52 of the hook-and-loop fastener 5 attached to the bottom surface of the main body 41 with an adhesive 42. The key portion 52 of the hook-and-loop fastener 5 is fitted with the loop portion 51 of the hook-and-loop fastener 5 attached to the waterproof material 3.

The gasket main body 41 has a thick stem 411 inserted into the joint 2, a bottom 412 provided at one end of the stem, and a pair of front fins 413 extending from both sides of the stem 411. , Rear fin 414 and trunk 41
And a cover part 415 provided at the front end of the first part. The cover portion 415 is made substantially flush with the surface of the outer wall panel 1 in a use state attached to the joint 2, and the cover portion 415, a pair of front fin pieces 413, and a pair of rear fins The joint 414 is triple-sealed with the piece 414 (see FIG. 1).

Next, a method of using the waterproof material 3 and the joint gasket 4 of the present embodiment will be described. First, the waterproof material 3 is attached to the joint bottom 21 with an adhesive layer 32, and then the main body 41 of the gasket 4 is placed in the joint 2.
And the key portion 52 of the hook-and-loop fastener 5 attached to the bottom 412 of the main body 41 is fitted to the loop portion 51 of the hook-and-loop fastener 5 attached to the front surface side of the waterproof material 3, and the gasket 4 and the waterproof material 3 To join.

(Evaluation Test) Next, an evaluation test method of the joint gasket 4 joined to the waterproof material 3 as described above and the test results will be described with reference to FIGS. As shown in FIG. 5, a test apparatus having joints 2 having joint width A = 6 mm between outer wall panels 1 and 1 having a height H = 1500 mm is prepared.
And the gasket 4 were attached via a hook-and-loop fastener 5.

The test apparatus of the outer wall panels 1 and 1 in which the gasket 4 was attached to the joint 2 was tested by the cooling / heating cycle shown in FIG. 7, and the warpage S of the gasket 4 was measured as shown in FIG. FIG. 7 shows the cooling / heating cycle with the temperature (° C.) on the vertical axis and time (hr.) On the horizontal axis, and the cooling / heating cycle is 0.5 hours and the temperature is 20 ° C.
To 80 ° C and left at 80 ° C for 2 hours.
The temperature is reduced to 20 ° C. over 0.5 hour and
After leaving for 20 hours, the temperature is lowered from 20 ° C to -20 ° C, left at -20 ° C for 2 hours, raised to 20 ° C again, and left at 20 ° C for 2 hours, which is regarded as one cycle. It is.

The above-mentioned cooling / heating cycle is carried out at 20, 30,.
When the test was repeated for 0 cycles, the warpage amount S after the test was 0 in any cycle.

(Comparative Evaluation Test) In the comparative evaluation test, FIG.
The waterproofing material 3 and the gasket 4 were attached to the joints 2 of the outer wall panels 1 and 1 shown in FIG. The warpage S of the gasket 4 was measured. As a result, the gasket 4
The warpage amount S was 0, but the warpage amount S was 1 mm in 40 cycles, 5 mm in 50 cycles, and 11 mm in 60 cycles, indicating a tendency for the warpage amount S to increase.

(Operation of the Embodiment) In the joint waterproof structure of the present embodiment, the surface of the waterproof material 3 and the bottom surface of the gasket 4 are joined via the hook-and-loop fastener 5, so that the joint bottom 21 is formed.
The joint force in the vertical direction acts on the gasket 4 to prevent the gasket 4 from protruding from the wall surface.

The joint waterproofing material 3 of this embodiment comprises a synthetic resin foam sheet 31, an adhesive layer 32 provided on one side of the foam sheet 31 and adhered to the joint bottom 21, and another side. It comprises a loop portion 51 of the hook-and-loop fastener 5 attached, one side of the foam sheet 31 is adhered to the joint bottom 21 with an adhesive layer 32, and the other side is a hook-and-loop fastener 5.
When used in connection with the joint gasket 4, the protrusion from the wall surface of the gasket 4 can be suppressed.

The joint gasket 4 of this embodiment is
Since the key portion 52 of the hook-and-loop fastener 5 is attached to the bottom surface of the main body 41, the waterproof material 3 attached to the joint bottom 21 is provided.
When the gasket 4 is used by being joined via the hook-and-loop fastener 5, the gasket 4 can be prevented from protruding from the wall surface.

[0026]

According to the joint waterproofing structure, joint waterproofing material, and joint gasket of the present invention, the gasket can be prevented from protruding from the wall surface, so that the gasket protrudes over time and becomes unsightly in appearance. There is no. In addition, it is possible to secure the waterproof function, which is an original function of the gasket. Furthermore, if a hook-and-loop fastener is used as the joining means between the waterproof material and the gasket, it can be joined with one touch and can be re-attached. Less is needed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a waterproof structure of a joint according to an embodiment of the present invention.

FIG. 2 is a sectional view of a joint portion.

FIG. 3 is a perspective view of a joint waterproofing material.

FIG. 4 is a sectional view of a joint gasket.

FIG. 5 is an explanatory view of an outer wall panel used for a warp test of a gasket.

FIG. 6 is an explanatory view showing a warped state of the gasket.

FIG. 7 is a graph showing a thermal cycle.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 outer wall panel 2 joint 21 joint joint bottom 3 joint waterproofing material 31 synthetic resin foam sheet 32 adhesive layer 4 joint joint gasket 5 surface fastener 51 loop part 52 key part

Claims (3)

[Claims] A joint waterproofing structure for sealing a joint between a wall material or a wall panel and an adjacent wall material or a wall panel in a watertight manner, wherein the joint waterproofing material is attached to a joint bottom and a joint closing the joint. A joint gasket, wherein a surface of the joint waterproofing material and a bottom surface of the joint gasket are joined by joining means. 2. A joint waterproofing material attached to the joint bottom, comprising a synthetic resin foam sheet, an adhesive layer provided on one side of the foam sheet and adhered to the joint bottom, and attached to the other side surface. A joint waterproofing material comprising: 3. A joint gasket for closing a joint, comprising:
A joint gasket comprising a gasket main body and a joining means attached to a bottom surface of the main body.