JP3062888B2 - Synthetic resin tube with rib - Google Patents

Description

The present invention relates to a synthetic resin pipe with ribs. More specifically,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin pipe with ribs, which has an annular or spiral rib on an outer peripheral surface of the pipe and is used for a gas pipe, a water pipe, a water pipe, and the like, and can easily connect a branch pipe.

[Conventional technology]

Conventionally, as synthetic resin pipes used for gas pipes and water and sewage pipes, those provided with a large number of annular ribs at predetermined intervals on the outer peripheral surface of the pipe and those provided with spiral ribs are known. ing. In order to branch-connect the branch pipe to the synthetic resin pipe with ribs, a branch pipe take-out point of the synthetic resin pipe with ribs is pierced, and a saddle member for attaching a branch pipe is connected to a peripheral portion of the through hole. It had a branch pipe attached to it.

[Problems to be solved by the invention]

In the above-mentioned conventional synthetic resin pipe with ribs, it is necessary to prepare a saddle member having a groove into which the rib existing at the periphery of the through hole fits in order to branch-connect the branch pipe. There is a problem in the connection workability of the branch pipe that the position shift occurs when drilling the through hole because of the existence.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and the connection of branch pipes is simplified by providing a plurality of concentric cylindrical short pipes at appropriate locations on the outer peripheral surface of the pipe. It is intended to provide a synthetic resin pipe with ribs which can be used for the above.

[Means for solving the problem]

The synthetic resin pipe with ribs of the present invention has annular or helical ribs provided at predetermined intervals on the outer peripheral surface of the pipe, and a cylindrical short pipe for attaching a branch pipe is provided at an appropriate position on the outer peripheral face of the pipe. It is characterized by having. A plurality of the cylindrical short pipes are protruded concentrically.

[Function of the Invention]

In the synthetic resin pipe with ribs according to the present invention, a short cylindrical pipe suitable for the diameter size of the branch pipe to be attached is selected and perforated along it. When a branch pipe is attached to this perforated part,
The outer peripheral surface of the branch pipe and the inner peripheral surface of the cylindrical short pipe are in close contact with each other.

〔Example〕

Next, an embodiment of a synthetic resin pipe with ribs according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing one embodiment of a synthetic resin pipe with ribs.
FIG. 2 is a sectional view showing a state where the branch pipes are connected.

As shown in FIG.
Made of synthetic resin such as vinyl chloride resin and polyethylene,
A large number of annular ribs 2 are provided at predetermined intervals on the outer peripheral surface of the pipe. Although not shown, a spiral rib may be provided instead of the annular rib 2. Cylindrical short pipes 3 are provided at appropriate places on the outer peripheral surface of the synthetic resin pipe 1 with ribs. The cylindrical short pipe 3 is for attaching the branch pipe 4 to the synthetic resin pipe 1 with ribs, and has an inner diameter substantially equal to the outer shape of the branch pipe 4 so that the two cylindrical short pipes 3 are concentric. And
In the illustrated example, a rib-shaped synthetic resin pipe 1 is provided in a plurality of locations in a staggered manner. Although not shown, two or more cylindrical short pipes may be provided concentrically and linearly at a plurality of locations of the ribbed synthetic resin pipe.

In order to attach the branch pipe 4 to such a ribbed synthetic resin pipe 1, as shown in FIG. 2, a cylindrical short pipe 3 suitable for the diameter of the branch pipe 4 is selected. A pipe wall is perforated along the inner peripheral surface of the cylindrical short pipe 3. After that, the branch pipe 4 is attached to the cylindrical short pipe 3 via an adhesive. Then, the outer peripheral surface of the branch pipe 4 comes into close contact with the inner peripheral surface of the cylindrical short pipe 3, and the branch pipe 4 is attached to the ribbed synthetic resin pipe 1.

〔The invention's effect〕

As described above, according to the ribbed synthetic resin pipe of the present invention, it is easy to pierce the pipe wall in accordance with the branch pipe to be attached, and it is not necessary to prepare a saddle or a branch pipe having a special structure.
The branch pipe can be easily and accurately connected to the ribbed synthetic resin pipe.

Further, since the branch pipe is in close contact with the inner surface of the cylindrical short pipe, it is possible to prevent rainwater and earth and sand from entering after connecting the branch pipe, and to firmly connect the branch pipe.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a synthetic resin pipe with ribs, and FIG. 2 is a sectional view showing a state where a branch pipe is connected. In the figure, reference numeral 1 denotes a synthetic resin tube with a rib, 2 denotes a rib, 3 denotes a cylindrical short tube, and 4 denotes a branch.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16L 9/12 F16L 11/11

Claims (1)

(57) [Claims] In a ribbed synthetic resin pipe having annular or helical ribs provided at predetermined intervals on the outer peripheral surface of a pipe, a plurality of cylindrical short pipes for attaching a plurality of branch pipes are concentrically arranged at appropriate positions on the outer peripheral face of the pipe. A synthetic resin tube with ribs, characterized in that the tube is provided with a rib.