JPH044385A - Ribbed synthetic resin pipe - Google Patents

Abstract

PURPOSE:To connect branch tubes easily by providing cylindrical short tubes for installing branch tubes on the peripheral surface of the tube, in a synthetic tube with ribs made of providing circular ribs on the peripheral surface of a tube. CONSTITUTION:A synthetic resin tube 1 with ribs of synthetic resin such as vinyl chloride resin or polyethylene resin has numerous circular ribs 2 on its peripheral surface at specific intervals. At adequate positions of the tube peripheral surface of the synthetic resin tube 1 with ribs, cylindrical short tubes 3 are provided. The cylindrical short tubes 3 are to install branch tubes 4, and the inner diameter is made almost equal to the outer diameter of the branch tubes 4. The tube wall of the synthetic resin tube 1 is bored along the inner surface of the cylindrical branch tube 4. And the branch tube 4 is installed to the cylindrical short tube 3 with an adhesive. As a result, the tube wall can be bored easily, and the branch tube can be connected simply. Furthermore, invasion of rainwater, or earth and sand after the connection can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ribbed synthetic resin pipe. More specifically, it relates to ribbed synthetic resin pipes that have annular or spiral ribs on the outer peripheral surface of the pipe and are used for gas pipes, water and sewage pipes, etc., so that branch pipes can be easily connected. be.

[Conventional technology]

Traditionally, synthetic resin pipes used for waste pipes and water and sewage pipes have been known to have a large number of annular ribs at predetermined intervals on the outer circumferential surface of the pipe, and ribbed synthetic resin pipes with spiral ribs. ing. In order to branch and connect a branch pipe to this ribbed synthetic resin pipe, a hole is drilled at the branch pipe extraction point of the ribbed synthetic resin pipe, and a saddle member for additional branch pipes is connected to the periphery of the through hole.
A branch pipe was attached to the saddle member.

[Problem to be solved by the invention]

In the above-mentioned conventional ribbed synthetic resin pipe, in order to branch and connect the branch pipe, it is necessary to prepare a saddle member having a groove that fits into the rib existing at the periphery of the through hole, and also has ribs on the outer peripheral surface of the pipe. Due to the existence of such a hole, positional deviation occurs when drilling a through hole, making it difficult to connect branch pipes.

The present invention has been made in view of the above-mentioned conventional problems.The present invention has been developed by providing a cylindrical short pipe for attaching a branch pipe or a flat part without ribs to make the branch pipe easier to install. To provide a ribbed synthetic resin pipe that allows the connection to be made inside the cylinder.

[Means to solve the problem]

The ribbed synthetic resin pipe of the present invention has annular or spiral ribs provided at predetermined intervals on the outer peripheral surface of the pipe, and short cylindrical pipes for attaching branch pipes are provided at appropriate locations on the outer peripheral surface of the pipe. It is characterized by certain things. A plurality of these cylindrical short tubes may be provided concentrically and projectingly.

Further, the device is characterized in that a flat portion without ribs is provided in place of the short cylindrical tube.

[Action of the invention]

In the ribbed synthetic resin pipe according to the present invention, when a cylindrical short pipe is provided, the pipe wall is perforated along the inner peripheral surface of the cylindrical short pipe. In the case where a plurality of short cylindrical tubes are provided concentrically, the hole is drilled along the short cylindrical tube that matches the diameter size of the branch pipe. When a branch pipe is attached to this perforated portion, the outer peripheral surface of the branch pipe and the inner peripheral surface of the cylindrical short pipe come into close contact.

Furthermore, in the case of a ribbed synthetic resin pipe having a flat part without ribs, a hole is bored approximately in the center of the flat part, and a branch pipe is attached to the pipe. In this case, even if the branch pipe has a saddle member, the saddle member is electrodeposited on the flat portion of the river edge of the through hole.

〔Example〕

Next, embodiments of the plastic pipe according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1: A perspective view showing an example of a synthetic resin pipe for "beam buoy";
FIG. 2 is a perspective view showing another embodiment, and FIG. 3 is a sectional view showing a state in which a branch pipe is connected to the ribbed synthetic resin pipe of FIG. 2.
FIG. 4 is a perspective view showing still another embodiment, and FIG. 5 is a sectional view showing a state in which a branch pipe is connected to the ribbed synthetic resin pipe of FIG. 4.

As shown in FIG. 1, the ribbed synthetic resin pipe 1 of the present invention is made of a synthetic resin such as vinyl chloride resin or polyethylene, and has a large number of annular ribs 2 provided at predetermined intervals on the outer circumferential surface of the pipe. Although not shown, a spiral rib may be provided instead of the annular rib 2. A short cylindrical tube 3 is provided at a suitable location on the outer peripheral surface of the ribbed synthetic resin tube 1.

The cylindrical short pipes 3 are for attaching the branch pipe 4 to the ribbed synthetic resin pipe 1, and the inner diameter thereof is approximately equal to the outer diameter of the branch pipe 4, and a plurality of cylindrical short pipes 3 are provided in a straight line on the ribbed synthetic resin pipe 1. This is an example.

FIG. 2 shows another embodiment in which two cylindrical short tubes 3 are provided concentrically and in a staggered manner on the ribbed synthetic resin tube 1. Although not shown, two or more cylindrical short tubes may be provided concentrically in a straight line.

In order to add a branch pipe 4 to such a ribbed synthetic resin pipe 1, as shown in FIG. . multiple cylindrical i
In the case where a +2 pipe 3 is provided, a short cylindrical pipe 3 matching the diameter size of the branch pipe 4 is replaced and a hole is bored along the inner circumferential surface of the short pipe 3. Thereafter, 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 l.

The one shown in FIG. 4 is yet another embodiment in which a flat portion 5 is provided in which the rib 2 of the synthetic resin pipe 1 does not exist in order to attach a branch pipe 4 thereto. The flat portions 5 are exemplified as having rectangular and circular shapes alternately arranged in a staggered manner. However, it is not limited to this. Although not shown, only the rectangular flat portions may be provided in a linear or staggered manner, or only the circular flat portions may be provided in a linear or staggered manner. Furthermore, a flat portion may be provided at the upper end of the short cylindrical tube 3 shown in FIG.

When attaching the branch pipe 4 to the ribbed synthetic resin pipe 1,
As shown in FIG. 5, a hole is bored approximately in the center of the flange t portion 5 to match the outer diameter of the branch pipe 4. Then, apply adhesive to the saddle part 6 of the branch tube 4 or the flant part 5 at the peripheral edge of the through hole, or to both of them, and insert the saddle part 6 through the hole by aligning the branch pipe 4 and the through hole. It comes into contact with the flat part 5 on the peripheral edge of. Then, the saddle portion 6 of the branch pipe 4 comes into close contact with the flange I portion 5 at the peripheral edge of the through hole, and the branch pipe 4
1 will be reprinted.

〔Effect of the invention〕

As described above, according to the uninvented ribbed synthetic resin pipe, it is easy to perforate the pipe wall, and there is no need to prepare a saddle or branch pipe with a special structure, so it is possible to add a branch pipe to the ribbed synthetic resin pipe. Can be easily connected.

In addition, since the branch pipe is a short cylindrical pipe or the saddle of the branch pipe is in close contact with the flat part, it prevents rainwater and dirt from entering after the branch pipe is connected, and also allows the branch pipe to be firmly connected. It is something that can be done.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the ribbed synthetic resin pipe, Fig. 2 is a perspective view showing another embodiment, and Fig. 3 is a branch pipe connected to the ribbed synthetic resin pipe of Fig. 2. 4 is a perspective view showing still another embodiment, and FIG. 5 is a sectional view showing a state in which a branch pipe is connected to the ribbed synthetic resin pipe of FIG. 4. In the figure, 1 is a ribbed synthetic resin pipe, 2 is a lip, 3 is a cylindrical short pipe, 4 is a branch pipe, 5 is a flat part, and 6 is a saddle part.

Claims (1)

[Claims] In a ribbed synthetic resin pipe in which annular or spiral ribs are provided at predetermined intervals on the outer circumferential surface of the pipe, a short cylindrical pipe for attaching a branch pipe or a flat portion where the ribs are not present is provided at an appropriate location on the outer circumferential surface of the pipe. A synthetic resin pipe with ribs.