JP2001311229A - Cutoff structure of dry type joint gasket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the cutoff structure of a dry type joint gasket, by which sealing properties can be displayed sufficiently even when the board thickness of an exterior-wall board is thinned. SOLUTION: In the cutoff structure of the long-sized dry type joint gasket 20 fitted into a joint space M2 between the exterior-wall boards 1 and 1, the end faces of the left and right exterior-wall boards 1 and 1 as the joint space M2 side are notched in a tapered shape expanded towards the rear sides from the surface sides of the exterior-wall boards 1 respectively, and the dry type joint gasket 20 is fitted into the region T of the taper section of the formed joint space M2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watertight structure for a dry joint gasket which is inserted into a joint space between building outer wall boards and seals the joint space.

[0002]

2. Description of the Related Art The waterproof structure of a conventional dry joint gasket will be described with reference to FIG. 5. Referring to FIG. 5, an elongate joint space M between architectural outer wall boards 1, 1 attached to the surface of a base material 2 is formed. A dry joint gasket 10 (extending long in the front and back of the paper) is fitted, and a plurality (four in this case) of seal lip portions 11, 12, 13, 14 formed on both left and right side surfaces of the dry joint gasket 10 are formed. The water blocking effect is obtained by elastically contacting the opposing end faces of the outer wall boards 1 and 1. A color material 15 for decoration is set on the uppermost side of the dry joint gasket 10, and a secondary waterproof material 16 is attached between the base material 2 and the outer wall board 1.

[0003]

However, what is shown in FIG. 5 is a joint space M formed between the outer wall boards 1 and 1.
The height of the dry joint gasket 10 is determined in accordance with the depth of the dry joint gasket 10, especially when the thickness of the outer wall board 1 is small and the depth of the joint space M is small. Since such a short dry joint gasket 10 is a delicate product, it may fall out of the joint space M.

It is an object of the present invention to provide a watertight structure for a dry joint gasket which can exhibit sufficient sealing performance even when the thickness of the outer wall board is reduced.

[0005]

In order to achieve the above-mentioned object, the invention according to the first aspect of the present invention is directed to a long-sized joint which is inserted into a joint space (M2) between outer wall boards (1, 1). A water-proof structure of a gas-filled dry joint gasket (20), wherein at least one end face of the left and right outer wall boards (1, 1) on the joint space (M2) side is from the outer wall board (1, 1) front side to the rear side. The dry joint gasket (20) is notched in a tapered shape expanding toward the end, and the dry joint gasket (20) is fitted into a region (T) of the joint space (M2) between the formed end faces. Joint space (M2) made of rubber or rubber-like elastic body and curved inward
And restoring the shape to make the outside elastically contact the end surfaces of the left and right outer wall boards (1, 1) to stop water.

According to a second aspect of the present invention, there is provided the left and right outer wall boards (1, 1) on the joint space (M2) side according to the first aspect.
At least one end face of the outer wall board (1, 1)
The joint space (M2) is cut into a tapered shape extending from the front side to the back side so as not to completely penetrate the plate thickness, and the joint space (M2) is formed to have a substantially umbrella cross section.

[0007] The third aspect of the present invention provides the first aspect.
Alternatively, the bottom surface of the dry joint gasket according to 2 is cut out.

The symbols in parentheses indicate the corresponding elements or items in the embodiment of the invention shown in the drawings and described later.

According to the first aspect of the present invention, the outer wall board is cut out, and the long dry joint gasket is fitted into the tapered region of the joint space formed. It is securely held without easily falling off. The dry joint gasket is made of a substantially arched rubber or rubber-like elastic body, is fitted into the joint space in a state of being curved inward, and is restored by restoring the shape so that the outside is elastically contacted with the end surfaces of the left and right outer wall boards and stopped. Because it is configured to water, its water stopping effect is greater than the water stopping effect of the conventional dry joint gasket of the conventional type, which is configured so that only the lip parts provided on both sides of the column are curved and elastically contact. large. Moreover, since the end face of the outer wall board is tapered, even if a strong restoring force is applied to the dry joint gasket, the dry joint gasket is securely held and does not easily fall off.

According to the second aspect of the present invention, since the tapered notch is formed so as not to completely penetrate the thickness of the outer wall board, the height of the entire dry joint gasket to be fitted (back) is set. ) Will be lower. Therefore, even if the thickness of the outer wall board is too small to be accommodated by a gasket of a conventional shape, it can be applied and exhibits excellent sealing properties.

Further, according to the third aspect of the present invention, since the bottom surface of the dry joint gasket is cut, it is easy to bend inward and the restoring force is large.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to FIG. 1, a description will be given of a water stopping structure of a dry joint gasket according to an embodiment of the present invention. The same parts as those in the conventional example are denoted by the same reference numerals.

[0013] The water-stop structure is provided between the left and right outer wall boards.
1 and a long dry joint gasket 20 to be fitted therein.
1A shows the dry joint gasket 20, FIG. 1B shows the joint space M2 formed, and FIG.
(C) shows a state in which the dry joint gasket 20 is fitted into the joint space M2.

The joint space M2 formed between the left and right outer wall boards 1 and 1 is formed into a substantially umbrella-shaped cross section including a tapered region T and a narrow groove region H as shown in FIG. I have. This is formed by notching the end surfaces of the left and right outer wall boards 1 and 1 on the joint space M2 side in a tapered shape extending from the front side to the rear side of the outer wall board 1 respectively. In addition, in FIGS. 1 to 3 of the present embodiment, approximately 2/3 of the thickness of the outer wall board 1 is cut out so as to cut out in a range that does not completely penetrate the plate thickness, but as shown in FIG. The sheet thickness may be completely penetrated. Further, although the end surfaces of the left and right outer wall boards 1 and 1 on the joint space M2 side are respectively cut in a tapered shape, it is also effective to cut out only one end surface in a tapered shape.

The dry joint gasket 20 is to be fitted into the tapered region T of the joint space M2 formed as shown in FIG. 1C, and its shape is shown in FIG.
As shown in the figure, the cross section is substantially trapezoidal, and the bottom surface 20A has a substantially arched shape with a cutout, and the material thereof is a rubber-like elastic body containing rubber or soft resin. The width of the dry joint gasket 20 is wider than the width of the joint space M2, and is fitted into the joint space M2 in a state of being curved inward so as to reduce or eliminate the opening of the cut portion, and by restoring the shape. The outside is elastically contacted with the end surfaces of the left and right outer wall boards 1 and 1 to prevent water from entering, and to prevent flooding from the joint space M2 into the interior of the building. When the dry joint gasket 20 is bent inward, the width of the joint space M2 becomes smaller than the width of the joint space M2, so that the insertion workability is simple.

As described above, when the tapered portion formed in the joint space M2 is fitted into the region T, the dry joint gasket 20 which is entirely curved in an arch shape is formed on the end surfaces of the left and right outer wall boards 1, 1 by its restoring force. Since it is configured to be in close contact, the water stopping effect is greater than that of a dry joint gasket configured to bend and elastically contact only the lips provided on both sides of the column. Moreover, the end faces of the left and right outer wall boards 1 and 1 are tapered, so that even if a strong restoring force is applied to the dry joint gasket 20, the dry joint gasket 20 is securely held, so that the dry joint gasket 20 is easily dropped. I will not do it. Therefore, the height (back) of the dry joint gasket 20 may be the same as the plate thickness of the outer wall board 1, but it is sufficient to set the plate thickness to approximately 2/3 or less corresponding to the region T of the tapered portion. Water stopping effect is obtained.

A color material 25 for decoration is set on the uppermost side of the dry joint gasket 20. Color material 2
5 may be integral with the body of the dry joint gasket 20 or may be attached separately, but in view of the manufacturing cost, it is preferable to integrally form the body with the dry joint gasket 20 by extrusion. Alternatively, the aesthetic appearance may be enhanced by applying a grain pattern or painting. Further, a secondary waterproof material 26 is attached between the base material 2 and the outer wall board 1, and the upper projection 26A of the secondary waterproof material 26 is connected to the joint space M.
The secondary water blocking material 26 can be positioned by being inserted into the area H of the second narrow groove from the back side of the outer wall board 1.

The dry joint gasket to be inserted into the joint space M2 is a dry joint gasket in which the uppermost side on which the color material 25 is set is made flat and the uppermost side is convexly curved upward when inserted into the joint space M2. For the joint gasket 20 (FIG. 1), like a dry joint gasket 30 shown in FIG.
The uppermost portion may be curved in a convex shape with the uppermost portion facing downward, so that the uppermost portion is made flat when fitted into the joint space M2. Alternatively, as shown in FIG. 3, a dry joint gasket 40 shown in FIG. The upper side may be maintained in a planar shape even when it is inserted into the joint space M2 when the sides are separated into a planar shape. According to these, since the uppermost sides of the dry joint gaskets 30, 40 at the time of fitting are flat, the appearance is similar to wet sealing, and the appearance is improved.

[0019]

As described above, according to the first aspect of the present invention, the outer wall board is cut out, and the long dry joint gasket is fitted in the tapered region of the joint space formed. The dry joint gasket is securely held without easily falling off. The dry joint gasket is made of a substantially arched rubber or rubber-like elastic body, is fitted into the joint space in a state of being curved inward, and is restored by restoring the shape so that the outside is elastically contacted with the end surfaces of the left and right outer wall boards and stopped. Because it is configured to water, its water stopping effect is greater than the water stopping effect of the conventional dry joint gasket of the conventional type, which is configured so that only the lip parts provided on both sides of the column are curved and elastically contact. large. Moreover, since the end face of the outer wall board is tapered, even if a strong restoring force is applied to the dry joint gasket, the dry joint gasket is securely held and does not easily fall off.

According to the second aspect of the present invention, since the tapered notch is formed so as not to completely penetrate the thickness of the outer wall board, the entire height of the dry joint gasket to be fitted (the height of the gasket). ) Will be lower. Therefore, even if the thickness of the outer wall board is too small to be accommodated by a gasket of a conventional shape, it can be applied and exhibits excellent sealing properties.

Further, according to the third aspect of the present invention, since the bottom surface of the dry joint gasket is cut, it is easy to bend inward and the restoring force is large.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view according to the present embodiment, in which (a) shows a dry joint gasket, (b) shows a formed joint space, and (c) shows a dry joint gasket fitted in the joint space. Is shown.

FIG. 2 is a cross-sectional view according to another embodiment, in which (a) shows a dry joint gasket, and (b) shows a state in which the dry joint gasket is fitted into a joint space.

FIG. 3 is a cross-sectional view according to another embodiment,
(A) shows the dry joint gasket, and (b) shows the dry joint gasket fitted in the joint space.

FIG. 4 is a cross-sectional view according to still another embodiment, showing a state in which a dry joint gasket is fitted into a joint space.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer wall board 2 Base material 10 Dry joint gasket 11-14 Seal lip 15 Color material 16 Secondary water stop material 20 Dry joint gasket 20A Bottom surface 25 Color material 26 Secondary water stop material 26A Upper protrusion 30 Dry joint gasket 40 Dry joint Gasket H Groove area M Joint space M2 Joint space T Area of taper

Claims (3)

[Claims] 1. A waterproof structure for a long dry joint gasket to be fitted into a joint space between outer wall boards, wherein at least one end face of the left and right outer wall boards, which is the joint space side, is positioned from the outer wall board front side. Notch into a tapered shape spreading toward the back side, and a dry joint gasket is inserted into the joint space area between the formed end faces, and the dry joint gasket is made of a substantially arched rubber or rubber-like elastic body, A watertight structure for a dry joint gasket, wherein the watertight structure is fitted into the joint space in a curved state, and the outer surface is elastically contacted with the end surfaces of the left and right outer wall boards to restore water by restoring the shape. 2. The joint space is substantially umbrella in cross section by notching at least one end surface of the left and right outer wall boards, which are the joint space side, in a tapered shape extending from the front side to the back side of the outer wall board so as not to completely penetrate the plate thickness. The water stopping structure for a dry joint gasket according to claim 1, wherein the water stopping structure is formed in a shape. 3. The water stopping structure for a dry joint gasket according to claim 1, wherein a bottom surface of the dry joint gasket is cut.