KR200212874Y1 - Connector for connecting thermoplastic pipe and metal pipe - Google Patents

Abstract

The present invention relates to a connector used as a means for connecting a flexible thermoplastic pipe and a metal pipe, the thermoplastic pipe and the metal pipe consisting of the body 11, the resin pipe connecting portion 12, and the metal pipe connecting portion (15) In the connector for connecting the body 11, the resin pipe connecting portion 12 and the metal pipe connecting portion 13 is made of a PPO (Polyphenyleneoxide) integrally formed structure, the sealing and strength is sufficiently maintained itself The weight is reduced and the manufacturing process is simplified.

Description

Connector for connecting thermoplastic pipe and metal pipe

The present invention relates to a connector used for connecting a thermoplastic pipe and a metal pipe of a flexible material among the connectors used as the connection medium of the thermoplastic resin pipe and the metal pipe, and in particular, while maintaining sufficient sealing and strength, This simplifies, lowers the cost of the product, and relates to the connector of the thermoplastic pipe and the metal pipe, the weight of which is reduced.

As is well known, the pipe and the connector connecting the pipe is classified into various types such as socket, elbow, tee, reducer, reducer, etc. It is made of various materials and structures according to the use and is used appropriately.

If the pipe is made of metal, the connections between the pipes form threads at the ends of the metal pipes to directly connect the ends of the metal pipes with threaded connections.If the pipes are made of thermoplastic resin, the connections between the pipes are separate. Although a connector is used, it is common to fuse and connect the tip of a thermoplastic pipe and the open connection part of this connector.

On the other hand, the connection of the thermoplastic resin pipe and the metal pipe with different materials are made of various materials and structures according to the use, and indirectly connected through the connector, Figure 2 shows an example of such a conventional connector.

2 is a cross-sectional view illustrating a state in which a thermoplastic resin pipe and a metal pipe are connected through a connector according to the prior art, and accordingly, the conventional connector 10 includes a body 11 having a through hole 11a and a resin. The pipe connecting part 12 and the metal pipe connecting part 15 are formed, and the inner circumferential surface of the resin pipe connecting part 12 is formed with a first seating hole 12a and a second seating hole 12b, and a stopper part 13 on the outer circumferential surface. ) And a threaded fastening portion 14 is formed, and a thread is formed on the inner circumferential surface of the metal pipe connecting portion 15, and has a structure in which a metal, particularly a forged brass, is integrally formed. 10) is used to connect thermoplastic resin pipes such as polyethylene and polybuthene, which have flexible properties.

The thermoplastic resin pipe 20 and the connector 10 is connected to a separate sealing fastening member 40 is used, the sealing fastening member 40 is a grab ring 41, the space washer 42, the sealing ring 43 and the cap 44.

Therefore, after the cap 44, the sealing ring 43, the space washer 42, and the grab ring 41 are sequentially inserted into the front end of the thermoplastic resin pipe 20, the thermoplastic resin pipe connecting portion 12 When the thermoplastic resin pipe 20 is inserted in close contact with the seating hole 12a and the torque is applied to the fastening portion 14 having the threaded portion formed on the outer circumferential surface thereof, the torque is applied to the cap 44 formed with the threaded portion on the inner circumferential surface 12a. ), The grab ring 41, the space washer 42, and the sealing ring 43 are fixed to the seated state, and the thermoplastic resin pipe 20 is connected to the resin pipe connection part 12. On the other hand, when a torque is applied to the fastening portion 31 of the metal pipe 30 with the thread formed on the outer circumferential surface against the metal pipe connecting portion 15 with the thread formed on the inner circumference, the metal pipe 30 is connected to the metal pipe connection 15. Therefore, the thermoplastic resin pipe 20 and the metal pipe 30 having different materials are connected in communication with each other.

The metal pipe connection part 15 is not limited to the shape shown in FIG. 2, and threads may be formed on the outer circumferential surface of the metal pipe connection part 13, and in this case, the fastening part 31 of the metal pipe 30 may have an inner circumferential surface. Threads are formed in and threaded together.

However, the connector 10 according to the prior art, since the material is a metal of its own weight is quite heavy, the thermoplastic pipe 20 is connected to the thermoplastic pipe 20 and the resin pipe connecting portion 12 of the metal material. Due to the large difference in the coefficient of thermal expansion in the sealing member 40 only had a problem that the limit is maintained in maintaining the airtightness.

In addition, since the production of the thread to the resin pipe connecting portion 12 and the metal pipe connecting portion 15, respectively, during manufacturing, the manufacturing work is cumbersome and difficult disadvantages.

The present invention has been devised to solve the above problems, while maintaining the sealing and strength sufficiently, the manufacturing process is simplified during manufacturing, the product cost is lowered, and the weight of the thermoplastic resin pipe and metal pipe is reduced The purpose is to provide a connecting connector.

1 is a cross-sectional view showing a state in which a thermoplastic resin pipe and a metal pipe are connected through a connector according to the present invention;

FIG. 2 is a corresponding diagram of FIG. 1 according to the related art.

10; Connector, 11; Body Part,

11a; Through hole, 12; Resin pipe connection,

12a; First seating hole, 12b; 2nd seating hole,

13; Stopper portion 14; Fastener,

15; Metal pipe connections, 20; Thermoplastic pipe,

30; Metal pipe connections, 31; Fastener,

40; Sealing member, 41; Grab-Ring,

42; Space washers, 43,43 '; Sealing Ring,

44; cap.

The present invention for achieving the above object, the through-hole is formed of a body, the resin pipe connecting portion, and a metal pipe connecting portion, the first seating hole and the second seating hole is formed on the inner peripheral surface of the resin pipe connecting portion, A stopper part and a threaded fastening part are formed on an outer circumferential surface thereof, and a connector for connecting a threaded thermoplastic resin pipe and a metal pipe to an inner circumferential surface or an outer circumferential surface of the metal pipe connection part includes: Polyphenyleneoxide) is used as a material to form a unitary structure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view illustrating a state in which a thermoplastic resin pipe and a metal pipe are connected through a connector according to the present invention, and the description thereof is omitted while attaching the same reference numerals to the same parts as in FIG. 2.

According to FIG. 1, the connector 10 according to the present invention includes a body 11 having a through hole 11a, a resin pipe connection part 12, and a metal pipe connection part 15, and a resin pipe connection part 12. In the inner circumferential surface of the), the first mounting hole 12a and the second mounting hole 12b are formed, and the outer circumferential surface is formed with the stopper portion 13 and the threaded fastening portion 14, and the metal pipe connecting portion 15 A thread is formed on the inner circumferential surface or the outer circumferential surface, and has a structure formed integrally with PPO (Polyphenyleneoxide).

Therefore, after the cap 44, the sealing ring 43, the space washer 42, and the grab ring 41 are sequentially inserted into the front end of the thermoplastic resin pipe 20, these sealing fastening members 40 are used as a medium. The thermoplastic pipe 20 is connected to the resin pipe connection part 12, while the fastening part 31 of the metal pipe 30 is torqued against the metal pipe connection part 15 to apply a torque to the metal pipe connection part 15. 30 is connected to connect the thermoplastic resin pipe 20 and the metal pipe 30 in which the materials are different from each other.

According to the present invention, since the material of the connector 10 is a thermoplastic resin, the difference in thermal expansion coefficient between the thermoplastic resin pipe 20 and the resin pipe connecting portion 12 is reduced, so that the thermoplastic resin pipe 20 and the resin pipe connecting portion ( Although the airtightness between 12) is improved, the airtightness between the metal pipe connection part 15 and the metal pipe 30 is reduced due to the difference in the coefficient of thermal expansion.

However, if the rubber ring sealing ring 43 'is installed in the metal pipe connecting portion 13, the sealing problem is easily solved.

In addition, the connector 10 according to the present invention is a screw thread of the resin pipe connecting portion 12 and the metal pipe connecting portion 15 during the molding itself, so that the conventional thread processing is unnecessary, and the manufacturing process becomes simple and easy. Compared with the prior art, the product's own weight and product cost are greatly reduced.

The connector 10 according to the present invention described in the above embodiment is an elbow type connecting the thermoplastic resin pipe 20 and the metal pipe 30 in the form of "a", but the present invention is not limited to this embodiment. Applicable to all known connectors such as sockets, tees, reducers, reducers and the like.

According to the present invention as described above, in the connector for connecting the conventional flexible thermoplastic resin pipe and the metal pipe, the body, the resin pipe connecting portion and the metal pipe connecting portion is made of a unitary molded structure made of PPO material, sealing and strength Is sufficiently maintained while its own weight is greatly reduced, and the manufacturing process is simplified and facilitated, so that productivity is improved and product cost is lowered.

Claims (1)

The body 11 having the through-hole 11a, the resin pipe connecting portion 12, and the metal pipe connecting portion 15 are formed, and the inner circumferential surface of the resin pipe connecting portion 12 includes the first seating hole 12a and the second. A seating hole 12b is formed, and a stopper portion 13 and a threaded fastening portion 14 are formed on an outer circumferential surface thereof, and a thermoplastic resin pipe and a metal pipe having a thread formed on an inner circumferential surface or an outer circumferential surface of the metal pipe connecting portion 15 are formed. In the connector to connect, Connector for connecting the thermoplastic resin pipe and the metal pipe, characterized in that the body (11), the resin pipe connecting portion 12 and the metal pipe connecting portion (13) is formed integrally with a material of PPO (Polyphenyleneoxide).