JPH06146505A - Connection construction of rain gutter - Google Patents

Abstract

PURPOSE:To maintain water leakage prevention performance for a long period of time by providing sealant combining water absorbing expansion rubber mixed with water absorbing resin with soft rubber between surfaces that overlap with rain gutters connected to each other. CONSTITUTION:Water absorbing expansion rubber 2 is combined with the surface of soft rubber 3 to form sealant 1, and it is provided to a sealant groove 5 of a rain gutter connection member 4. After that, a boundary surface between the rubber 3 and rubber 2 and the surface of the rubber 2 are corrugated to promote sealing efficiency and waterproof efficiency. Then, the sealant 1 is provided to the member 4, the rubber 2 absorbs water and is expanded in the case of raining, and a gap between connection parts is tightly closed to prevent water leakage. By combining the rubber 2 with the rubber 3, resistance of the expansion and contraction of water absorbing resin is reduced, and the rubber 2 repeats its expansion and contraction for a long period of time. In addition, the water absorbing resin is mixed with the rubber 2 to maintain, the rubber 2 absorbs water and is expanded in the case of raining, and water leakage prevention performance of a connection part between the rain gutters is maintained for a long period of time without deteriorating performance preventing water leakage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention directly connects eaves gutters, sluice gutters, gutters (hereinafter collectively referred to as rain gutters), or through rain gutter joints (hereinafter referred to as joints) having a waterproof function. The present invention relates to a rain gutter connection structure that is connected by means of.

[0002]

2. Description of the Related Art Conventionally, in order to connect a rain gutter and a rain gutter through a joint, an inner surface or an outer surface of the rain gutter is superposed on an outer surface or an inner surface of the joint and fixedly connected. Alternatively, a structure has been adopted in which the connection is made so that it can be slightly slid to accommodate expansion and contraction of rain gutters. In some cases, the outer surface of one gutter and the inner surface of the other gutter are overlapped to connect the gutter and the gutter without a joint. In either case, it is necessary to take measures to prevent water leakage from the connection part.

FIG. 9 is a perspective view of a rain gutter connection structure cited from Japanese Patent Laid-Open No. 3-147964.

This is an example of connecting the rain gutter 6a and the rain gutter 6b through the joint 5, and the inner surface of the joint 5 is superposed on the outer surfaces of the rain gutters 6a and 6b. Has a structure in which a water-absorbent resin is provided as the sealing material 7 and can prevent water leakage from the connecting portion.

FIG. 10 is a perspective view of another embodiment of the publication, showing another example of connecting the rain gutter 11a and the rain gutter 11b through a joint 10. An outer surface of the joint 10 is overlapped and connected to inner surfaces of the rain gutter 11a and the rain gutter 11b, and a water-absorbent resin is provided as a sealing material 7 on the outer surface of the joint 10.

As the water-absorbent resin which is the sealing material 7, for example, an acrylic acid-based polymer such as a high degree of polymerization poly (sodium acrylate) is used. It is described that the absorbed water is such that it hardly escapes even if it receives some pressure.

As a method of disposing the water-absorbent resin on the connecting member, it is possible to knead it into rubber or plastic and post-fix it at a predetermined position, or to carry out by simultaneous molding.
Seven examples are listed.

[0008]

However, in the above technique, the water absorbency decreases as the water absorbent resin repeatedly undergoes water absorption expansion and drying shrinkage over a long period of time. If the fixing force to the connecting member is weak, the water-absorbent resin will be lost. Conversely, if the fixing force of the water-absorbing resin to the connecting member is strong, the expansion coefficient of the water-absorbent resin will decrease and the water leakage prevention effect will decrease. Therefore, maintaining the high reliability of the waterproof and durable performance of the rain gutter connection is an issue.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and provides a rain gutter connection structure which can maintain the leakage prevention performance of the rain gutter connection portion for a long period of time and which is easy to construct. It is intended to be provided.

[0010]

Therefore, the connection structure for a rain gutter according to the present invention is a water-absorbent expansion rubber in which a water-absorbent resin is kneaded between the overlapping surfaces of the rain gutter to be connected and the rain gutter or the joint. The present invention is intended to achieve the above-mentioned object by a configuration characterized in that a sealing material that is a combination of the above and soft rubber is provided.

[0011]

With the above construction, the water-expandable rubber absorbs and expands in rainy weather to seal the voids in the connecting portion and prevent water leakage.
And since the water-absorptive rubber is combined with the soft rubber,
The water-absorbent resin has little resistance to expansion and contraction, and the water-absorption expanded rubber can repeat expansion and contraction for a long time without any trouble. Further, since the water-absorbent resin is kneaded and held in the water-expanded rubber, the water-absorbent resin is not lost,
The water-absorption expansion rubber does not absorb water when it rains and the performance of preventing water leakage does not deteriorate, and the water leakage prevention performance of the rain gutter connection part can be maintained for a long period of time. Can be configured.

[0012]

EXAMPLE A connection structure for a rain gutter according to the present invention will be described below with reference to examples.

The present embodiment is a rain gutter connection structure for connecting a rain gutter and a rain gutter through a joint, and is also a rain gutter connection structure for connecting a rain gutter and a rain gutter without a joint. Further, it is characterized by a sealing material arranged between connecting rain gutters and overlapping surfaces of rain gutters, or between overlapping surfaces of connecting rain gutters and joints, and other configurations are the same as those of the conventional example. Therefore, a duplicate description will be omitted, and the sealing material will be described below.

In this embodiment, a sealing material in which a water-absorbing expansive rubber mixed with a water-absorbent resin is mixed with a soft rubber is connected between the surfaces where rain gutters and rain gutters overlap, or the surfaces where a rain gutter and a joint overlap. It is arranged between the two.

The water-absorbent resin used for the water-expandable rubber is selected from resins having the property of absorbing water when contacted with water and rapidly expanding in volume, and the water once absorbed hardly escapes even when subjected to some pressure. However, for example, an acrylic acid-based polymer such as a high degree of polymerization poly (sodium acrylate) can be used. By kneading the water-absorbent resin into rubber or plastic, the water-absorbent resin is retained so as not to be lost, and a water-absorptive rubber that exhibits water-absorptivity is formed.

The soft rubber material can be easily formed into various shapes required for the sealing material in combination with the water-absorptive rubber, and is selected from materials having elasticity, flexibility and water resistance. The sealing material of the example is formed.

Next, various sectional shapes of the sealing material of the embodiment will be described.

1 to 8 are cross-sectional views of essential parts showing a state in which a sealing material is provided on a rain gutter or a joint to be connected.

Reference numeral 1 denotes the above-mentioned sealing material, which is formed by combining a water-absorption expansion rubber 2 and a soft rubber 3. Reference numeral 4 denotes a gutter connecting member, more specifically, an end of a joint which is superposed on the outer surface of the end of the gutter to be connected from below, or an end of a gutter which is superposed on the outer surface of the end of the joint from below.

In the example shown in FIG. 1, a water absorbent expansion rubber 2 is integrally formed on the surface of a soft rubber 3 to form a sealing material 1, which is disposed in a sealing material groove 5 of a rain gutter connecting member 4. Especially soft rubber 3
The boundary surface between the water-absorption expanded rubber 2 and the surface of the water-absorption expanded rubber 2 are corrugated to improve the sealing property and durability.

In the example shown in FIG. 2, a block of soft rubber 3 is embedded inside a water-expanded rubber 2 to form a sealing material 1,
It is arranged in the seal material groove 5 of the rain gutter connection member 4. Particularly, by embedding the soft rubber 3 in the water-expanded rubber 2, the integration is made firm and reliable, and the sealing property and durability are improved.

In the example shown in FIG. 3, the water-absorption expansion rubber 2 is integrated from the surface to the side surface of the soft rubber 3, and the hollow portion 6 is provided inside the soft rubber 3 to form the sealing material 1, and the gutter connection. It is arranged in the seal material groove 5 of the member 4. In particular, the sealability and durability are improved by widening the boundary surface between the soft rubber 3 and the water-expanded rubber 2 and by providing the hollow portion 5 inside.

The example shown in FIGS. 4 and 5 is a modification of the example shown in FIG. 1, is easy to manufacture, and can have sufficient sealing property and durability. Note that in the example shown in FIG.
The groove formed in the soft rubber 3 for adhering the water-absorption rubber 2 has a structure in which the bottom width is slightly wider than the width of the opening to prevent the water-absorption rubber 2 from escaping.

The examples shown in FIGS. 6 and 7 are modifications of the examples shown in FIGS. 2 and 3, and are easy to manufacture, and can have sufficient sealability and durability.

In the example shown in FIG. 8, a half-filled belt-shaped water-expandable rubber 2 having a circular cross section is embedded in the surface of a soft rubber 3 to form a sealing material 1, which is disposed in a sealing material groove 5 of a rain gutter connecting member 4. Therefore, the manufacturing is easy, and sufficient sealing property and durability can be provided.

By disposing the seal member 1 on the rain gutter connection member 4 as in the configuration of the above embodiment, the water absorption expansion rubber 2 absorbs and expands in rainy weather to seal the voids in the connection portion and prevent water leakage. . Since the water-absorptive rubber 2 is combined with the soft rubber 3, the water-absorptive resin 2 has little resistance to expansion and contraction, and the water-absorptive rubber 2 can repeat expansion and contraction for a long period without any trouble. Further, since the water-absorbent resin is kneaded and held in the water-absorbent expansion rubber 2, the water-absorbent resin is not lost, and the water-absorption expanded rubber 2 absorbs and expands in rainy weather to deteriorate the performance of preventing water leakage. In addition, the water leakage prevention performance of the rain gutter connection part can be maintained for a long time, and the construction is easy.

[0027]

As described above, according to the present invention, by disposing the sealing material, which is a combination of the water-absorbing expansive rubber mixed with the water-absorbing resin and the soft rubber, in the rain gutter connection portion, it can be used in rainy weather. The water-absorptive rubber absorbs water and expands to seal the voids in the connection portion and prevent water leakage.

Since the water-absorptive rubber is combined with the soft rubber, the water-absorptive resin has little resistance to expansion and contraction, and the water-absorptive rubber can repeat expansion and contraction for a long period without any trouble. Further, since the water-absorbent resin is kneaded and held in the water-absorbent expanded rubber, the water-absorbent resin is not lost, and there is no deterioration in the performance of the water-absorbent expanded rubber that absorbs water and expands in rainy weather to prevent water leakage. The water leakage prevention performance of the rain gutter connection part can be maintained for a long time, and the construction is easy.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment showing a state in which a sealing material is provided.

FIG. 2 is a cross-sectional view of a main part of another embodiment.

FIG. 3 is a cross-sectional view of main parts of another embodiment.

FIG. 4 is a sectional view of a main part of another embodiment.

FIG. 5 is a cross-sectional view of main parts of another embodiment.

FIG. 6 is a cross-sectional view of main parts of another embodiment.

FIG. 7 is a cross-sectional view of main parts of another embodiment.

FIG. 8 is a cross-sectional view of main parts of another embodiment.

FIG. 9 is a perspective view showing a conventional rain gutter connection structure.

FIG. 10 is a perspective view showing a conventional rain gutter connection structure.

[Explanation of sign]

 1 Sealing Material 2 Water Absorption Expansion Rubber 3 Soft Rubber 4 Rain Gutter Connection Member 5 Sealing Material Groove 6 Hollow Part

Claims (2)

[Claims] 1. A rain gutter characterized in that a sealing material made of a combination of a water-absorbent expansion rubber mixed with a water-absorbent resin and a soft rubber is arranged between the overlapping surfaces of the rain gutter to be connected and the rain gutter. Connection structure. 2. A rain gutter, characterized in that a sealing material, which is a combination of a water-absorptive rubber mixed with a water-absorbent resin and a soft rubber, is arranged between the overlapping surfaces of the rain gutter and the rain gutter joint to be connected. Connection structure.