JPH04126991U - Connection structure between resin pipe and manhole - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide a connection structure that can reliably connect a manhole to a conduit formed by a resin pipe buried underground. [Structure] A connection structure between a conduit 10 formed by a resin pipe 1 buried underground and a manhole 2. The resin pipe 1 is made of thermoplastic resin and has a socket 12 at one end.
A coil 14 that generates heat when energized is embedded in the socket 12, and the other end 13 of another resin pipe 1 is inserted into the socket 12, and the two are electrically fused. As a result, a conduit 10 is formed, and this conduit 10
A sanded part 11 is formed on the outer circumferential surface of the end of the manhole 2, and when the sanded part 11 is inserted into the branch hole 21 formed in the manhole 2, both of them are connected to the mortar 3. It is finished.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention combines a conduit formed from a resin pipe buried underground and a manhole. This relates to the connection structure of.

0002

[Conventional technology]

In recent years, synthetic resin pipes made of synthetic resin materials have been buried underground for sewerage and other connections. It is being used for pipes.

0003 Conventionally, such synthetic resin pipes have been made of vinyl chloride or hard vinyl chloride. Nil resin pipes were used. This resin pipe has a socket formed at one end, The other end is an insertion part, and the insertion part of another resin pipe is inserted into the socket of the resin pipe. By inserting and adhesively connecting them, a conduit was formed.

0004 Then, with such a resin pipe made of vinyl chloride or hard vinyl chloride, When connecting the pipe end of a configured pipe to a manhole, etc., the outer peripheral surface of the pipe end A sandy part is formed in the area, and this sandy part and the branch hole of the manhole are finished with mortar. They were connected by At this time, apply adhesive and sand to the end of the pipe. It was formed by kneading and applying the mixture.

[0005]

[Problem that the idea aims to solve]

However, as with the conventional method mentioned above, resin pipes made of vinyl chloride or hard vinyl chloride When forming a conduit using adhesive, it will be an adhesive connection, so uneven adhesive application may occur. Therefore, it was difficult to make a reliable connection. In addition, such uneven application of adhesive It is difficult to obtain a stable connection because there are variations depending on the installer. Met. Furthermore, connecting jigs such as wire ropes and tension machines are required, so This had the disadvantage that it was difficult to connect in places where excavated trenches were narrow or in spring areas.

[0006] This invention was made in view of the actual situation, and is made using resin pipes buried underground. We propose a connection structure that can reliably connect a conduit formed by a manhole to a manhole. The purpose is to provide

[0007]

[Means to solve the problem]

In order to solve the above problems, the connection structure between the resin pipe and the manhole of this invention is This is a connection structure between a conduit formed by a resin pipe buried in a manhole and a manhole. The resin pipe is made of thermoplastic resin, has a socket at one end, and has a socket in the socket. A coil that generates heat when energized is buried, and the other end of the resin pipe is connected to this socket. A conduit is formed by inserting the part and electrically welding the two, and On the outer circumferential surface of the end of this pipe, a sanded part is formed by fusion of sand, and this sanded part is formed by welding sand. With the opening part inserted into the branch hole formed in the manhole, both are covered with mortar. It is finished.

[0008]

[Effect]

The connection structure between the resin pipe and the manhole of the present invention has a socket formed at one end, and the socket is formed at one end. The socket of a thermoplastic resin pipe with a coil embedded in the mouth that generates heat when energized. Insert the other end of the resin tube and form a conduit by electrically welding the two. This ensures that all pipe connections are firmly connected by heat fusion. Ru. In addition, a sanded part is formed by welding sand on the outer peripheral surface of the end of this pipe, and this The sandy part of the manhole is inserted into the branch hole formed in the manhole, and both are placed in a mold. Since it has a tar finish, the sanded part and the branch hole are firmly connected by mortar. It will be.

[0009]

【Example】

An embodiment of the present invention will be described below with reference to the drawings.

0010 Figure 1 schematically shows the overall configuration of the connection structure between resin pipe 1 and manhole 2, and Figure 2 shows The main parts are shown.

[0011] That is, this connection structure connects the resin pipes 1 to each other by electrical fusion to connect the pipe line 1. 0, and the sanded part 11 formed on the outer peripheral surface of the end of this pipe line 10 is connected to the manhole 2. Both of them are finished with mortar 3 while inserted into the branch hole 21 formed in the It is.

0012 The resin pipe 1 is made of thermoplastic resin such as polyethylene. this tree The resin pipe 1 has one end expanded in diameter to form a socket part 12, and the resin pipe 1 is inserted into the socket part 12. The other end 13 is insertable.

[0013] A coil 14 that generates heat when energized is embedded in the inner peripheral surface of the socket 12. The heat generated by the coil 14 causes the resin around the periphery of the coil 14 to melt. has been done. That is, insert the other end 13 of another resin pipe 1 into the socket 12 and By energizing the coil 14, the inner circumferential surface of the socket portion 12 and the outer circumferential surface of the other end portion 13 will be melted and fused together. Therefore, the coil 14 covers the entire socket part 12. It is buried in a circular motion to ensure a sufficient area for fusion by welding. . The end of the coil 14 is a current-carrying terminal that protrudes from the outer periphery of the socket 12. It is wired to the terminal 15, and is configured so that it can be energized from the energizing terminal 15. There is.

[0014] Note that this socket part 12 can be formed by injection molding, but as shown in FIG. As shown, a welding member 122 is fitted and formed in a storage portion 121 whose diameter has been expanded. Good too. At this time, the fusing member 122 is heated and deformed and stored in the storage section 121. By returning it to its original shape, it can be stored in the storage section 121. However, the collection The housing part 121 has a hole 123 through which the current-carrying terminal 15 of the fusion member 122 passes. Make a hole.

[0015] The pipe line 10 is made by connecting the resin pipe 1 to an appropriate length that fits between the manholes 2. It is formed by connecting the sea urchin.

[0016] The sanded portion 11 melts the outer circumferential surface of the end of the pipe 10 and applies sand to the molten portion. Formed by adhesion. As shown in FIG. 4, this sanded part 11 is A resin pipe 1a having a sanded portion 11 is prepared in advance, and this resin pipe 1a is It is obtained by connecting to the end of the conduit 10.

[0017] This sanded part 11 is inserted into a branch hole 21 formed in the manhole 2. Then, the gap between the sanded portion 11 and the branch hole 21 is finished with the mortar 3.

[0018] According to this connection structure, each connection part is sealed by heat fusion without using any adhesive. It can be easily and firmly connected.

[0019]

[Effect of the idea]

As mentioned above, according to the present invention, heat fusion is used without using adhesives. This allows each connection part to be firmly connected, creating a uniform and stable connection structure. I can do that.

[Brief explanation of drawings]

FIG. 1 is a schematic structural diagram showing the overall configuration of a connection structure according to the present invention.

FIG. 2 is a partially cutaway side view showing a connection portion between resin pipes of the connection structure according to the present invention.

FIG. 3 is a partial cross-sectional view showing another embodiment of the socket part.

FIG. 4 is a partially cutaway side view schematically showing the overall configuration of a resin pipe used at the end of the conduit.

[Explanation of symbols]

1 Resin pipe 10 Pipeline 11 Sanded part 12 Socket part 13 Other end 14 coil 2 Manhole 21 Branch hole 3 Mortar

Claims (1)

[Scope of utility model registration request] Claim 1: A connection structure between a manhole and a conduit formed by a resin pipe buried underground, the resin pipe being made of thermoplastic resin and having a socket at one end, A coil that generates heat when energized is embedded in the socket, and the other end of another resin pipe is inserted into the socket,
A conduit is formed by electrically welding these two together, and a sanded part is formed by welding sand on the outer peripheral surface of the end of this conduit, and this sanded part is connected to the manhole. A connection structure between a resin pipe and a manhole, characterized in that both are finished with mortar while inserted into a formed branch hole.