JPS59350Y2 - pipe joint - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pipe joint used for underdrain drainage pipes, etc., and includes a plurality of inwardly projecting parts on the peripheral wall of a cylinder 1 consisting of a right side band 2 and a left side band 3, respectively. Provide a cut and raised piece 4,
The tip of the cut-and-raised piece 4 is inclined so that it faces the center of the cylinder, and at least one or more cut-and-raised pieces are arranged closer to the center line 7 than the cut-and-raised pieces 5 and 6 that are closest to the center of each of the right side band 2 and left side band 3. Cut and raised pieces 8 and 9 that protrude inward are provided, and the tips of the cut and raised locking pieces 8 and 9 are inclined so as to face the end edge of the cylinder, and the cut and raised pieces 4 and the cut and raised locking pieces are inclined. It concerns a pipe joint in which the holes created by providing the pieces 8 and 9 serve as water passage holes 10, and its purpose is to make the connection easy and reliable, and to have water permeability like a perforated pipe. The purpose of this invention is to provide a pipe joint that does not impair its characteristics.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

The cylindrical body 1 has a short tubular shape obtained by cutting a synthetic resin pipe,
It is divided into a right side band 2 and a left side band 3 by a center line 7.

On the peripheral walls of each of the right side band 2 and left side band 3, a plurality of cut and raised pieces 4 are cut and raised so that their tips point inward and toward the center of the cylindrical body.

Center line 7 further from the cut and raised piece 5 closest to the center of the right side band 2
The cut-and-raised locking piece 8 is inclined so that its tip faces inward and toward the right band edge 11.

Similarly, the cut-and-raised locking piece 9 cut and raised further toward the center line 7 than the cut-and-raised piece 6 closest to the center of the left side band 3 has its tip inside and closes to the left side band edge 12. It is slanted so that it faces.

The water passage holes 10 are formed by providing the cut and raised pieces 4 and the cut and raised locking pieces 8 and 9 on the circumferential wall of the tube.

The pipe connected by the pipe joint A configured as described above is, for example, a synthetic resin-type perforated pipe B, which has a thick annular knob 13 and a thin flexible annular thin film 14, as shown in FIG. are integrally and alternately continued, and through holes 1 are formed in the annular thin film 14.
5, and is used for underdrain drainage pipes, industrial water collection pipes, irrigation water supply pipes, etc., and has water permeability and flexibility, and can withstand pressure in the soil due to the annular ribs 13. It has strength.

In this perforated tube B, the annular thin film 14 has a smaller diameter than the annular rib 13, and has a step.

To connect the perforated pipe B with the pipe fitting A, insert the perforated pipe B from both ends of the pipe joint A, and then the right side band 2 and the left side band 3
The cut-and-raised piece 4 provided therein is flexed in a tilted manner and enters, and comes into contact with the cut-and-raised locking pieces 8 and 9.

Since the cut and raised locking pieces 8 and 9 are inclined in the direction opposite to the insertion direction of the perforated pipe B, the cut and raised locking pieces 8 and 9 cannot be bent, and the perforated pipe B cannot be bent. Insertion of will stop.

When inserted and connected in this manner, the tip of the cut and raised piece 4 is engaged with the stepped portion between the annular rib 13 and the annular thin film 14, thereby preventing the perforated tube from regressing and ensuring a secure connection.

Furthermore, if the tip of the cut and raised piece 4 is engaged with the through hole 15 of the annular thin film 14 of the perforated tube B, the connection strength will be further strengthened.

On the other hand, since the cut-and-raised locking pieces 9, 9 are inclined toward the edges of the cylinder body, the perforated pipe B that comes into contact with the cut-and-raised locking pieces 8, 9 is not inserted any further. A perforated tube B inserted from the right side band edge 11 is inserted into the right side band 2, and a perforated tube B inserted from the left side band edge 12 is inserted into the left side band 3.

Therefore, there is no possibility that either one of the perforated pipes B is inserted too far, and both perforated pipes B are inserted into the pipe joint A by approximately the same length and are securely connected.

In the pipe joint A that connects the perforated pipe B in this way, the water passage hole 10 created by providing the cut and raised pieces 4 and the cut and raised locking pieces 8 and 9 allows the water in the perforated pipe B to flow. Water from the outside or outside can be passed through the perforated pipe B, and the connection can be made reliably so that the perforated pipe B does not come off without impairing the characteristics of the perforated pipe B. .

This pipe joint A can be used not only for the above-mentioned perforated pipe B, but also for pipes having irregularities on the pipe surface, such as corrugated pipes.

It is also used for mesh pipes, but in this case, cut and raised pieces 4
The tip of the mesh is connected to the mesh.

As described above, in this invention, if a perforated pipe having a locking part such as a concave-convex or mesh is inserted from both ends, the cut and raised pieces prevent the pipe from coming off, and the cut and raised locking pieces prevent the pipe from coming off. The insertion lengths of the respective perforated tubes inserted into the joint can be made almost the same to ensure reliable connection.

In addition, the water passage holes formed by providing the cut and raised pieces and the cut and raised locking pieces do not impair the characteristics of water permeable pipes such as perforated pipes, and are suitable for use in underdrain drainage, etc. It is extremely effective as a pipe joint for connecting pipes.

Furthermore, since the cut-and-raised piece for locking, the cut-and-raised locking piece for stopper, and the water hole can be formed at the same time, there are fewer manufacturing steps, and the advantage is that it can be manufactured easily and at low cost. It has the following.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a sectional view of the same, and FIG. 4 is a partial sectional view showing the connection state of the above. 1 is a cylindrical body, 2 is a right side band, 3 is a left side band, 4 is a cut and raised piece, 5
．． 6 is the cut-and-raised piece closest to the center, 7 is the center line, 8 and 9 are the cut-and-raised locking pieces, and 10 is the water hole.

Claims (1)

[Scope of utility model registration request] A plurality of cut and raised pieces protruding inward are provided on the peripheral wall of the cylinder consisting of the right side band and the left side band, respectively, and the cut and raised pieces are inclined so that the tips of the lines face the center of the cylinder. Further closer to the center line than the cut and raised piece closest to the center of each,
At least one cut-and-raised locking piece protruding inward is provided, the cut-and-raised locking piece is inclined so that the tip of the cut-and-raised locking piece faces the end edge of the cylinder, and the cut-and-raised locking piece and the cut-and-raised locking piece are provided. A pipe joint in which the opening created by this process serves as a water passage hole.