WO2012060549A2

WO2012060549A2 - Connecting mechanism for piping

Info

Publication number: WO2012060549A2
Application number: PCT/KR2011/006575
Authority: WO
Inventors: 신호용
Original assignee: 주식회사 애강그린텍
Priority date: 2010-11-01
Filing date: 2011-09-06
Publication date: 2012-05-10
Also published as: WO2012060549A3

Abstract

The present invention relates to a connecting mechanism for piping, which efficiently connects components of a pipe system, such as metal pipes. The connecting mechanism includes: a hollow synthetic resin body including a passage therein; a metal sleeve screwed to a component of a pipe system and inserted in the hollow synthetic resin body; and a fixing member coupled to the hollow synthetic resin body to fix the metal sleeve to the hollow synthetic resin body. A first uneven part is disposed on an inner surface of the hollow synthetic resin body. The metal sleeve includes: a through hole communicating with the passage of the hollow synthetic resin body; and a second uneven part engaged with the first uneven part. According to the present invention, a component of a pipe system, such as a metal pipe, can be screwed to the metal sleeve installed on a connection of the hollow synthetic resin body. Thus, when a component of a pipe system is connected to the metal sleeve, the component can be prevented from breaking. Furthermore, the metal sleeve can be efficiently connected to or disconnected from a component of a pipe system.

Description

Piping connector

The present invention relates to a pipe connecting mechanism, and more particularly, to a pipe connecting mechanism for easily connecting the piping components, such as metal pipes.

In general, the piping is used as a water supply line or oil supply line of a variety of facilities, ranging from ordinary homes to industrial facilities of various industrial sites. Such piping consists of a number of pipes connecting the demand at the fluid supply.

A plurality of pipes constituting the pipe is continuously connected by the pipe connecting mechanism. Various valves may be provided between the pipes and the pipes to control the flow of the fluid. In the actual plumbing work, pipes of a certain length are buried sequentially, and each pipe is connected to a pipe connecting device to complete the pipe.

Pipe fittings are used in various forms depending on the connection angle of the two pipes connected to each other. Such pipe connection mechanisms include straight sockets, elbows, and T-type joints.

In recent years, regulations on the detection allowance of metal hazardous substances have been tightened in piping for water supply. As the acceptance criteria for metal harmful substances such as lead and cadmium are lowered in water supply pipes, the use of metal pipes and metal pipe connecting devices is restricted. In particular, copper (brass), which has been used as a main material for metal pipes or pipes for metal pipes, is faced with a reality that it is no longer possible to use it as regulations are tightened.

As an alternative to this, a pipe or pipe connection mechanism may be made using stainless steel, etc., in which the harmful substances are less eluted, but in this case, there is a problem in that it is difficult to manufacture and satisfies economic efficiency.

As another alternative to the metal pipe or metal pipe connection mechanism (especially brass), a synthetic resin pipe and a pipe connection mechanism are attracting attention. Synthetic resin pipes or plumbing connections have the advantage of no elution of harmful substances, relatively easy molding, and low cost.

However, the entire piping line cannot be composed of only synthetic resin material, and the coupling of the synthetic pipe and the synthetic pipe pipe and the metal pipe and the metal pipe pipe is essentially made.

When combining the synthetic resin component with the metallic component, the synthetic resin component can be damaged because the strength of the synthetic resin is weak compared to the metal. In particular, when the synthetic resin component and the metal component are screwed together, this problem is more prominent.

SUMMARY OF THE INVENTION The present invention has been made in view of this point, and an object of the present invention is to provide a pipe connecting mechanism that can be easily combined without damaging a synthetic resin component in joining piping components such as metal pipes.

Pipe connecting mechanism according to an aspect of the present invention for achieving the above object is made of a hollow body having a flow path formed therein, the first surface of the synthetic resin body is provided with a first concave-convex portion, the screw is screwed with the piping component and inserted into the synthetic resin body A metal sleeve having a through hole coupled to the flow path of the synthetic resin body and a second concave-convex portion provided on an outer surface thereof to be engaged with the first concave-convex portion, and coupled to the synthetic resin body to fix the metal sleeve to the synthetic resin body. It includes a fixing member.

Pipe connecting mechanism according to another aspect of the present invention for achieving the above object is a hollow synthetic resin body, the flow path is formed therein, the screw is coupled to the piping components and inserted into the synthetic resin body and the flow path of the synthetic resin body and A metal sleeve having a through-hole connected thereto, the fixing member coupled to the synthetic resin body to fix the metallic sleeve to the synthetic resin body, wherein the metallic sleeve does not rotate inside the synthetic resin body and the inner surface of the synthetic resin body; One of the outer surfaces of the metal sleeve is provided with a locking groove, the other is provided with a locking projection inserted into the locking groove.

Pipe connecting mechanism according to another aspect of the present invention for achieving the above object, a hollow synthetic resin body having a flow path formed therein, the screw is coupled to the piping component and inserted into the synthetic resin body and the flow path of the synthetic resin body A metal sleeve having a through-hole connected to the resin body, the fixing member being coupled to the synthetic resin body to fix the metal sleeve to the synthetic resin body, wherein an end of the synthetic resin body is formed with a coupling groove, and the metal sleeve has the coupling member. A coupling portion inserted into the groove is provided, and the coupling portion has a non-circular shape, and the coupling groove has a shape corresponding to the coupling portion so that the coupling portion can be joined.

Pipe connecting mechanism according to another aspect of the present invention for achieving the above object, a hollow synthetic resin body having a flow path formed therein, inserted and coupled to the synthetic resin body to be screwed to the piping component and the synthetic resin body A metal sleeve having a through hole connected to the flow path of the plastic sleeve, and a fixing member coupled to the synthetic resin body to fix the metal sleeve to the synthetic resin body, the inner diameter of the synthetic resin body facing the end of the metal sleeve; A stepped portion smaller than the outer diameter of the end of the metal sleeve is provided, and at least one of the stepped portion of the synthetic resin body and the end of the metal sleeve is provided with a locking groove so that the metal sleeve does not rotate inside the synthetic resin body. The other is inserted into the locking groove The rim projection is provided.

Each of the locking grooves and the locking protrusions may be provided in plural, and the plurality of locking grooves may be divided into a first locking groove provided in the stepped portion of the synthetic resin body and a second locking groove provided in the end of the metal sleeve. The plurality of locking protrusions may be divided into a first locking protrusion provided at the stepped portion of the synthetic resin body and a second locking protrusion provided at the end of the metal sleeve.

The locking groove may be provided in the middle of the stepped end facing the end of the metal sleeve, and the locking protrusion may be provided in the metal sleeve.

Pipe connecting mechanism according to another aspect of the present invention for achieving the above object, a hollow synthetic resin body having a flow path formed therein, inserted and coupled to the synthetic resin body to be screwed to the piping component and the synthetic resin body A metal sleeve having a through hole connected to the flow path of the metal sleeve, the fixing member being coupled to the synthetic resin body to fix the metallic sleeve to the synthetic resin body, wherein the metallic sleeve extends outward so as not to be inserted into the synthetic resin body. It is provided with a locking groove is provided at any one of the end of the synthetic resin body and the extension of the metal sleeve, and the other end of the locking projection is inserted into the locking groove so that the metal sleeve does not rotate inside the synthetic resin body It is provided.

The fixing member may be made of metal, and may be fixed to the synthetic resin body by being compressed and deformed to be compressed to the end of the synthetic resin body.

A friction protrusion may be provided on at least one of an outer surface of the synthetic resin body and an inner surface of the fixing member to increase friction between the synthetic resin body and the fixing member.

Male threads are provided on an outer surface of the end of the synthetic resin body, and an internal thread corresponding to male threads of the synthetic resin body may be provided on an inner surface of the fixing member.

One of the outer surface of the synthetic resin body and the inner surface of the fixing member is provided with a fixing projection, the other may be provided with a fixing groove into which the fixing projection is inserted.

A sealing member may be interposed between the synthetic resin body and the metal sleeve to seal between the synthetic resin body and the metal sleeve.

An inner surface of the fixing member may be provided with a pressing portion for pressing the end of the metal sleeve toward the inside of the synthetic resin body.

Male threads may be provided on an outer surface of the piping component, and female threads corresponding to male threads of the piping component may be provided on an inner surface of the metal sleeve.

A female screw thread may be provided on an inner surface of the piping component, and a male thread corresponding to the female thread of the piping component may be provided on an outer surface of the metal sleeve.

The pipe connecting mechanism according to the present invention has a metal sleeve that can be screwed to the piping components, such as metal pipes in the connection portion of the synthetic resin body, there is little risk of damage when connecting the piping components, connecting and disconnecting from the piping components Can be made easily.

1 is a perspective view showing a state in which a pipe is connected to the pipe connecting mechanism according to an embodiment of the present invention.

Figure 2 is an exploded perspective view showing a pipe connection mechanism according to an embodiment of the present invention.

Figure 3 is a side cross-sectional view showing a state in which a pipe is connected to the pipe connection mechanism according to an embodiment of the present invention.

4 and 5 show a modification according to the sealing member position of the pipe connection mechanism according to the present invention.

6 to 16 show a modified example of the coupling structure of the synthetic resin body and the metal sleeve of the pipe connecting mechanism according to the present invention.

17 and 21 show a modification according to the coupling structure of the synthetic resin body and the fixing member of the pipe connecting mechanism according to the present invention.

22 and 23 show a modification according to the coupling structure of the metal sleeve and the metal pipe of the pipe connecting mechanism according to the present invention.

24 to 26 show various modifications of the metal sleeve.

Hereinafter, with reference to the accompanying drawings, it will be described in detail for the pipe connecting mechanism according to the present invention.

In describing the present invention, the size or shape of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of description.

1 is a perspective view showing a pipe connected to the pipe connection mechanism according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a pipe connection mechanism according to an embodiment of the present invention, Figure 3 is Side cross-sectional view showing a state in which a pipe is connected to the pipe connection mechanism according to an embodiment of the present invention.

As shown in Figures 1 to 3, the pipe connection mechanism 100 according to an embodiment of the present invention is made of an elbow shape for connecting the metal pipe 10 at a predetermined angle, hollow synthetic resin body 110, a metal sleeve 130 inserted into and coupled to the end of the synthetic resin body 110, and a fixing member 140 for fixing the metallic sleeve 130 to the synthetic resin body 110. Here, the synthetic resin body 110 may be made of various synthetic resin materials, such as PE, PB, PERT, the metal sleeve 130 and the fixing member 140 is a variety of metal materials such as stainless steel or less or no harmful substance content It may be made of.

The synthetic resin body 110 has a flow path 111 through which fluid can flow. The end of the synthetic resin body 110 is provided with a connection portion 112 to which the metal pipe 10 is connected. The coupling part 112 is provided with a coupling groove 114 into which the metal sleeve 130 is inserted, and an inner surface of the connection part 112 is provided with a first uneven part 115 for fixing the metal sleeve 130.

The support jaw 116 in which the sealing member 120 is placed is provided in the synthetic resin body 110 at which the first uneven portion 115 ends. The sealing member 120 is supported by the support jaw 116, and the plastic body 110 and the metal sleeve by elastically deforming the end of the metal sleeve 130 when the metal sleeve 130 is coupled to the coupling groove 114 Sealing between the (130).

The metal sleeve 130 is directly coupled to the metal pipe 10 and has a through hole 131 connected to the flow path 111 of the synthetic resin body 110. The inner surface of the metal sleeve 130 is provided with a female thread 132 to which the male thread 11 of the metal pipe 10 is screwed. Accordingly, the metal pipe 10 may be firmly screwed to the metal sleeve 130. Thus, the pipe connection mechanism 100 according to the present invention is excellent in strength and durability because the metal pipe 10 is screwed to the portion made of a metal, there is little risk of damage when connecting or disconnecting the metal pipe 10. .

The metal sleeve 130 has a coupling part 133 inserted into the coupling groove 114 of the synthetic resin body 110. On the outer surface of the coupling part 133, a second uneven part 134 corresponding to the first uneven part 115 of the synthetic resin body 110 is provided.

When the coupling part 133 is inserted into the coupling groove 114, the first uneven part 115 and the second uneven part 134 are engaged with each other, whereby the synthetic resin body 110 and the metal sleeve 130 are formed. Relative rotation between) is suppressed. Thus, when the metal pipe 10 is screwed into the metal sleeve 130, the metal sleeve 130 does not rotate. One end of the metal sleeve 130 is provided with an extension 135 having a width larger than that of the coupling groove 114. The extension 135 prevents the metal sleeve 130 from being completely inserted into the plastic body 110.

The fixing member 140 is coupled to the connection part 112 of the synthetic resin body 110 to fix the metal sleeve 130 coupled to the synthetic resin body 110. An insertion hole 141 through which the metal pipe 10 can penetrate is formed at the center of the fixing member 140. After the fixing member 140 is coupled to the end of the synthetic resin body 110, a portion thereof is compressed and deformed and compressed to the outer surface of the synthetic resin body 110 to fix the metal sleeve 130 to the synthetic resin body 110.

As shown in FIG. 3, when the metal sleeve 130 is inserted into the synthetic resin body 110 and the fixing member 140 is coupled to the connection portion 112 of the synthetic resin body 110, the inner surface of the fixing member 140 is fixed. The pressing unit 143 provided on the pressing portion 135 of the metal sleeve 130 to the inside of the synthetic resin body (110). At this time, the expansion unit 135 is in close contact with the end of the synthetic resin body 110, the other end of the metal sleeve 130 is in close contact with the sealing member 120 between the synthetic resin body 110 and the metal sleeve 130 Is sealed. Therefore, the metal pipe 10 and the pipe connection mechanism 100 can maintain a stable connection state without the risk of leakage of the fluid.

The installation position of the sealing member 120 for sealing between the synthetic resin body 110 and the metal sleeve 130 may be variously changed. For example, the sealing member 120 may be disposed between the outer surface of the end of the metal sleeve 130 and the inner surface of the synthetic resin body 110 as shown in FIG. 4, and the metal sleeve (as shown in FIG. 5). It may be disposed between the outer surface of the intermediate portion 130 and the inner surface of the synthetic resin body (110). 5 shows that the groove is provided on one side of the outer surface of the metal sleeve 130 for the installation of the sealing member 120, the groove for installing the sealing member 120 is to be provided on the inner surface of the synthetic resin body 110. It may be.

Hereinafter, various modifications of the pipe connecting mechanism according to the present invention will be described with reference to the accompanying drawings. The pipe connecting mechanism according to another embodiment of the present invention has the same basic configuration as the pipe connecting mechanism 100 according to the embodiment of the present invention described above. In the following description of the modification of the present invention, the same reference numerals are given to the same parts as the pipe connecting mechanism 100 described above, and a detailed description thereof will be omitted.

The pipe connecting mechanism 200 shown in FIG. 6 includes a hollow synthetic resin body 210, a metal sleeve 230 and a metal sleeve 230 inserted into and coupled to the ends of the synthetic resin body 210, and the synthetic resin body 210. It includes a fixing member 140 for fixing to. The fixing member 140 is the same as that shown in FIG. 2, and a part of the fixing member 140 is compressed and deformed to fix the metal sleeve 230 to the synthetic resin body 210 by pressing the outer surface of the synthetic resin body 210.

The connection part 112 of the synthetic resin body 210 is provided with a coupling groove 211 into which the metal sleeve 230 is inserted, and the metal sleeve 230 has a coupling part 231 inserted into the coupling groove 211. The coupling part 231 has a quadrangular shape, and the coupling groove 211 is formed in a square shape corresponding to the shape of the coupling part 231 so that the coupling part 231 can be seamlessly combined. Therefore, when the coupling portion 231 is inserted into the coupling groove 211, the relative rotation of the synthetic resin body 210 and the metal sleeve 230 is suppressed.

The support jaw 212 is provided inside the synthetic resin body 210, and a sealing member 220 for sealing between the synthetic resin body 210 and the metal sleeve 230 is disposed on the supporting jaw 212. The sealing member 220 has a square shape corresponding to the shape of the coupling portion 231 of the metal sleeve 230, and the support jaw 212 also has a square shape corresponding to the sealing member 220.

In the present embodiment, the shape of the coupling groove 211 and the coupling portion 231 for suppressing relative rotation of the synthetic resin body 210 and the metal sleeve 230 is not limited to those shown. That is, the shapes of the coupling grooves 211 and the coupling portion 231 may be modified into other non-circular shapes, such as polygons or ellipses, such as triangles, pentagons, etc., in addition to square shapes.

7 and 8 is a groove-protruding structure as a means for suppressing the relative rotation between the

resin body

310, 410 and the

metal sleeve

330, 430 shown in the

pipe connection mechanism

300, 400 To have.

7 is provided with a coupling groove 312 on the inner surface of the synthetic resin body 310, and corresponds to the locking groove 312 on the outer surface of the coupling portion 331 of the metal sleeve 330. The locking projection 332 is provided. When the metal sleeve 330 is coupled to the synthetic resin body 310, the locking protrusion 332 of the metallic sleeve 330 is inserted into the locking groove 312 of the synthetic resin body 310, thereby forming the synthetic resin body 310 and the metal. Relative rotation of the sleeve 330 is suppressed. Here, the shape or number of the locking grooves 312 and the locking projections 332, the arrangement interval may be changed in various ways.

The pipe connecting mechanism 400 illustrated in FIG. 8 is provided with a locking protrusion 412 on the inner surface of the synthetic resin body 410, and corresponds to the locking protrusion 412 on the outer surface of the coupling portion 431 of the metal sleeve 430. The locking groove 432 is provided. When the metal sleeve 430 is coupled to the synthetic resin body 410, the locking protrusion 412 is inserted into the locking groove 432, thereby preventing relative rotation between the synthetic resin body 410 and the metal sleeve 430.

The locking protrusion 412 may be formed so as not to extend to the support jaw 116 of the synthetic resin body 410. That is, the support jaw 116 and the end of the engaging projection 412 is spaced a predetermined distance. When the locking protrusion 412 extends to the support jaw 116, the sealing member 120 may be hardly seated on the support jaw 116. The shape or number of the locking protrusions 412 and the locking grooves 432 and the arrangement interval may be changed in various ways.

9 and 10 is a pipe connecting mechanism 500 is a synthetic resin body 510, the metal sleeve 530 and the metal sleeve 530 is inserted into the end of the synthetic resin body 510, the synthetic resin body 510 And a fixing member 140 for fixing to 510. Here, the metal sleeve 530 and the fixing member 140 may be made of various metal materials such as stainless steel with little or no harmful substance.

The synthetic resin body 510 includes a connection portion 112 to which the metal pipe 10 is connected, and a flow path 111 through which a fluid can flow is provided in the synthetic resin body 510. The coupling part 112 is provided with a coupling groove 511 into which the metal sleeve 530 is inserted. And the step portion 512 is provided inside the synthetic resin body 510. The inner diameter of the stepped part 512 is smaller than the outer diameter of the end of the metal sleeve 530 so that the end of the metal sleeve 530 inserted into the connection part 112 faces the stepped part 512. A plurality of first locking grooves 513 and second locking grooves 514 are alternately disposed in the stepped portion 512.

In addition, the inner surface of the synthetic resin body 510 is provided with a receiving groove 515 for accommodating the sealing member 520. The sealing member 520 is accommodated in the receiving groove 515 and elastically deformed in contact with the outer surface of the metal sleeve 530 when the metal sleeve 530 is inserted into the connecting portion 112, the synthetic resin body 510 and the metal sleeve 530 ) Will be sealed.

The metal sleeve 530 also has a coupling portion 533 inserted into the connection portion 112 of the synthetic resin body 510. A plurality of second coupling grooves 534 and second coupling protrusions 535 are alternately disposed at the ends of the coupling portion 533. When the metal sleeve 530 is inserted into the connection part 112, the plurality of first locking grooves 513 and the first coupling protrusions 514 provided in the synthetic resin body 510 are connected to the second coupling protrusions of the metal sleeve 530. 535 and the second engaging groove 534 is respectively engaged. Accordingly, when the metal pipe 10 is screwed into the metal sleeve 530, the metal sleeve 530 does not rotate to smoothly couple the metal pipe 10 to the metal sleeve 530.

After the fixing member 140 is coupled to the end of the synthetic resin body 510, a portion of the fixing member 140 is compressed and deformed and fixed to the synthetic resin body 510 by being compressed to the outer surface of the synthetic resin body 510. When the metal sleeve 530 is inserted into the synthetic resin body 510 and the fixing member 140 is coupled to the connection portion 112 of the synthetic resin body 510, the pressing part 142 provided on the inner surface of the fixing member 140 is provided. The extension 135 of the temporary metal sleeve 530 is pressed into the synthetic resin body 510. At this time, the expansion portion 536 is in close contact with the end of the synthetic resin body 510, the plurality of first coupling protrusions 514 are inserted into the plurality of first locking grooves 513, respectively, a plurality of second coupling protrusions ( The 535 is inserted into the plurality of second locking grooves 534, respectively. Thus, the metal sleeve 530 is firmly fixed to the plastic body 510.

In the pipe connection mechanism 500 according to the present embodiment, the first and second locking

grooves

513 and 534 and the first and second coupling protrusions 514 and 535 to suppress rotation of the metal sleeve 530. The number of) may vary. For example, the first locking groove 513 and the first coupling protrusion 514 are provided at the stepped portion 512 of the synthetic resin body 510 one by one, and the second locking groove 534 and the second coupling protrusion 535 are One end of the metal sleeve 530 may be provided. In addition, any one of the stepped portion 512 of the synthetic resin body 510 and the end of the metal sleeve 530 is provided with one coupling groove, the other may be provided with one coupling protrusion inserted into the coupling groove. have.

11 and 12 is a pipe connecting mechanism 600 is provided with a plurality of engaging grooves 611 at the outer end of the connecting portion 112 of the synthetic resin body 610, the expansion portion 135 of the metal sleeve 630 ), A plurality of locking projections 631 corresponding to the plurality of locking grooves 611 are provided. When the metal sleeve 630 is inserted into the connection part 112, the plurality of locking protrusions 631 are inserted into each of the plurality of locking grooves 611, thereby preventing rotation of the metal sleeve 630.

The support jaw 612 in which the sealing member 620 is placed is provided in the synthetic resin body 610. The sealing member 620 is supported by the support jaw 612, and when the metal sleeve 630 is inserted into the connecting portion 112, the end of the metal sleeve 630 is pressed into the sealing member 620 so that the synthetic resin body 610 is provided. And the metal sleeve 630 are sealed.

Although the drawing shows that the locking groove 611 is provided at the end of the synthetic resin body 610 and the locking protrusion 631 is provided at the end of the metal sleeve 630 to suppress the rotation of the metal sleeve 630, The installation position of the locking groove 611 and the locking projection 631 may be changed. That is, a plurality of locking protrusions 631 may be provided at the end of the synthetic resin body 610, and a plurality of locking grooves 611 may be provided at the end of the metal sleeve 630. In addition, only one locking groove 611 and one locking projection 631 may be provided.

13 and 14, the pipe connection mechanism 700 shown in FIGS. 13 and 14 is provided with a plurality of locking grooves 712 in the stepped portion 711 provided in the synthetic resin body 710, and at one end of the metal sleeve 730. A plurality of locking projections 731 corresponding to the plurality of locking grooves 712 is provided. The plurality of locking grooves 712 are provided to contact the inner surface of the connection part 112. When the metal sleeve 730 is inserted into the connection part 112, the plurality of locking protrusions 731 are inserted into each of the plurality of locking grooves 712, thereby preventing rotation of the metal sleeve 730. An inner side of one side of the synthetic resin body 710 is provided with a receiving groove 713 into which the sealing member 720 is inserted.

15 and 16, the pipe connecting mechanism 800 is also provided with a stepped portion 811 inside the synthetic resin body 810, and a plurality of locking grooves 812 are provided in the stepped portion 811, and a metal sleeve. One end of the 830 is provided with a plurality of locking projections 831 corresponding to the plurality of locking grooves 812. While the hooking groove 712 of the pipe connecting mechanism 700 shown in FIGS. 13 and 14 is provided to contact the inner surface of the connecting portion 112, the pipe connecting mechanism 800 shown in FIGS. The locking groove 812 is formed in the middle of the end of the step 811 facing the end of the metal sleeve 830. The plurality of locking protrusions 831 are provided to be stepped with the coupling part 832 of the metal sleeve 830 to be respectively inserted into the plurality of locking grooves 812.

When the metal sleeve 830 is inserted into the connection portion 112 of the resin body 810, the end of the coupling portion 832 of the metal sleeve 830 is in close contact with the end of the step portion 811 of the resin body 810, A plurality of locking projections 831 are inserted into the plurality of locking grooves 812, respectively. Thus, rotation of the metal sleeve 830 is suppressed. An inner side of one side of the synthetic resin body 810 is provided with a receiving groove 813 into which the sealing member 820 is inserted.

13 to 16, the installation positions of the locking

grooves

712, 812 and the locking

protrusions

731, 831 may be changed to suppress rotation of the

metal sleeves

730 and 830. have. That is, one or more locking projections may be provided at the stepped

portions

711 and 811 of the

synthetic resin bodies

710 and 810, and one or more locking grooves may be provided at the ends of the

metal sleeves

730 and 830.

17 to 21 show a modification according to the coupling structure of the synthetic resin body and the fixing member of the pipe connecting mechanism according to the present invention.

The pipe connecting mechanism 900 shown in FIGS. 17 and 18 includes a hollow plastic resin body 910, a metal sleeve 130 and a metal sleeve 130 inserted into and coupled to the ends of the plastic body 910. It includes a fixing member 920 for fixing to (110). 17 and 18, the pipe connecting mechanism 900 is a synthetic resin body 910 and the fixing member 920 is screwed, the male thread 911 on the outer surface of the connection portion 112 of the synthetic resin body 910 Is provided, the inner surface of the fixing member 920 is provided with a female mountain 921 corresponding to the male acid 911 of the synthetic resin body 910. The fixing member 920 may be made of various materials such as metal and synthetic resin. In addition, the remaining components are the same as the pipe connection mechanism 100 shown in FIGS. 2 and 3.

The fixing member 920 is screwed to the connection portion 112 of the synthetic resin body 910 to fix the metal sleeve 130 coupled to the synthetic resin body 910. When the metal sleeve 130 is inserted into the synthetic resin body 910 and the fixing member 920 is screwed to the connection portion 112 of the synthetic resin body 910, the pressing portion 143 provided on the inner surface of the fixing member 920. ) Presses the extension 135, one end of the metal sleeve 130, into the plastic body 910. At this time, the expansion unit 135 is in close contact with the end of the synthetic resin body 910, the other end of the metal sleeve 130 is in close contact with the sealing member 120 between the synthetic resin body 910 and the metal sleeve 130 Is sealed.

19 is provided with a plurality of friction protrusions 931 on the outer surface of the end of the synthetic resin body 930, a plurality of insertion grooves 941 is provided on the inner surface of the fixing member (940). The fixing member 940 may be made of various materials such as metal and synthetic resin. When the fixing member 940 is coupled to the end of the synthetic resin body 930, the friction protrusion 931 is inserted into the insertion groove 941 so that the fixing member 940 may be fixed to the synthetic resin body 930. When the fixing member 940 is made of metal, as described above, the fixing member 940 may be partially compressed to be pressed onto the outer surface of the synthetic resin body 930. In this case, the friction protrusion 931 of the synthetic resin body 930 is inserted into the insertion groove 941 of the fixing member 940 to increase the coupling force between the synthetic resin body 930 and the fixing member 940.

When the fixing member 940 made of metal is compressed and deformed to the outer surface of the synthetic resin body 930, the insertion groove 941 of the fixing member 940 may be omitted. In this case, the friction protrusion 931 of the synthetic resin body 930 increases the frictional force between the synthetic resin body 930 and the fixing member 940, thereby increasing their coupling force. When the friction protrusion 931 is used for the purpose of increasing the friction force between the synthetic resin body 930 and the fixing member 940, the friction protrusion 931 is the inner surface of the fixing member 940, or the synthetic resin body 930 It may be provided on both the outer surface and the inner surface of the fixing member 940, the shape may be modified to other shapes that can increase the friction force between the two contact surfaces in addition to those shown.

20 and 21 is provided with a fixing groove 952 connected to the guide groove 951 and the guide groove 951 on the outer surface of the end of the synthetic resin body 950, the inner surface of the fixing member 960 Moving along the guide groove (951) is provided with a fixing projection (961) that can be inserted into the fixing groove (952). The guide groove 951 has a bent shape so that the start portion opened to the end of the synthetic resin body 950 and the end portion connected to the fixing groove 952 do not lie in a straight line.

When the fixing member 960 is coupled to the synthetic resin body 950, the fixing protrusion 961 is inserted into the guide groove 951, moves along the guide groove 951, and is inserted into the fixing groove 952. 960 is fixed to the resin body 950. The depth of the guide groove 951 may be smaller than the depth of the guide groove 951 so that the fixing protrusion 961 inserted into the fixing groove 952 may not be easily separated from the fixing groove 952.

Although the drawing shows that two fixing grooves 952 are provided in the synthetic resin body 950 and two fixing protrusions 961 are provided on the fixing member 960, the fixing grooves 952 or the fixing protrusions 961 are provided. The number of) may vary. In addition, the positions of the fixing groove 952 and the fixing protrusion 961 may be interchanged. That is, the fixing protrusion 961 may be provided on the outer surface of the synthetic resin body 950, and the fixing groove 952 may be provided on the inner surface of the fixing member 960.

22 and 26 show a modification according to the coupling structure of the metal sleeve and the metal pipe of the pipe connecting mechanism according to the present invention.

The pipe connecting mechanism 1000 shown in FIGS. 22 and 23 has a structure capable of connecting not only the pipe 10 having the male screw thread 11 but also the metal pipe 20 having the female screw thread 21. The metal sleeve 1010 of the pipe coupling mechanism 1000 may include a female thread 132, a coupling part 133, and a second uneven part 134 corresponding to the first uneven part 115 of the synthetic resin body 110. In addition to the expansion part 135, a hollow pipe fixing part 1011 and a male screw thread 1012 provided on the outer surface of the pipe fixing part 1011 for coupling the metal pipe 20 having the female thread 21 are further included. Include. The metal pipe 10 provided with the male thread 11 at the end may be screwed to the female thread 132 of the metal sleeve 1010. The metal pipe 20 having the female thread 21 at the end may be screwed to the male thread 1012 of the metal sleeve 1010 as shown in FIG. 23.

24 to 26 show various modifications of the metal sleeve.

The metal sleeve 1020 shown in FIG. 24 has a pipe fixing portion 1011 and an external thread (10) for fixing the metal pipe 20 having the female thread 21 compared with the metal sleeve 230 shown in FIG. 1012, wherein the metal sleeve 1030 shown in FIG. 25 is a pipe height for securing the metal pipe 20 with female thread 21 as compared to the metal sleeve 330 shown in FIG. 7. It further includes the government 1011 and the male thread 1012. In addition, the metal sleeve 1040 shown in FIG. 26 may have a pipe fixing portion 1011 and a number for fixing the metal pipe 20 having the female thread 21 as compared with the metal sleeve 430 shown in FIG. 8. The thread 1012 is further included.

In the metal sleeves shown in FIGS. 23 to 26, the female thread 132 may be omitted when used for connecting only the metal pipe 20 provided with the female thread 21 at the end.

The pipe connection mechanism according to the present invention may be formed in the form of a straight socket or T-type joint in addition to the elbow form as described above, and may be used for connecting other piping components in addition to the metal pipe. In addition, the fixing member of the pipe connection mechanism according to the present invention can be changed into various shapes that can be coupled to the synthetic resin body to secure the metal sleeve in addition to the cap shape provided with an insertion hole in the center as shown.

As described above, the pipe connecting mechanism according to the present invention has a metal sleeve that can be screwed to the piping components, such as metal pipes in the connection portion of the synthetic resin body, there is less risk of damage when connecting and disconnecting the piping components.

Claims

In the pipe connecting mechanism for connecting the piping components,

Synthetic resin body is made of a hollow formed in the flow path, the first uneven portion provided on the inner surface;

A metal sleeve screwed with the piping component, inserted into the synthetic resin body, the metal sleeve having a through hole connected to a flow path of the synthetic resin body and a second uneven portion provided at an outer surface to be engaged with the first uneven portion; And

And a fixing member coupled to the synthetic resin body to fix the metal sleeve to the synthetic resin body.
In the pipe connecting mechanism for connecting the piping components,

Hollow synthetic resin body formed with a flow path therein;

A metal sleeve screwed to the piping component, inserted into the synthetic resin body, the metal sleeve having a through hole connected to the flow path of the synthetic resin body; And

And a fixing member coupled to the synthetic resin body to fix the metal sleeve to the synthetic resin body.

A locking groove is provided on any one of an inner surface of the synthetic resin body and an outer surface of the metal sleeve so that the metal sleeve does not rotate inside the synthetic resin body, and the other one is provided with a locking protrusion inserted into the locking groove. Plumbing fittings.
In the pipe connecting mechanism for connecting the piping components,

Hollow synthetic resin body formed with a flow path therein;

A metal sleeve screwed to the piping component, inserted into the synthetic resin body, the metal sleeve having a through hole connected to the flow path of the synthetic resin body; And

And a fixing member coupled to the synthetic resin body to fix the metal sleeve to the synthetic resin body.

A coupling groove is formed at the end of the synthetic resin body, and the metal sleeve is provided with a coupling portion inserted into the coupling groove.

The coupling portion has a non-circular outer shape, the coupling groove is a coupling mechanism for piping, characterized in that formed in a shape corresponding to the coupling portion so that the coupling portion can be combined.
In the pipe connecting mechanism for connecting the piping components,

Hollow synthetic resin body formed with a flow path therein;

A metal sleeve inserted into the plastic body so as to be screwed to the piping component, the metal sleeve having a through hole connected to the flow path of the plastic body; And

And a fixing member coupled to the synthetic resin body to fix the metal sleeve to the synthetic resin body.

Inside the synthetic resin body is provided with a stepped portion whose inner diameter is smaller than the outer diameter of the end of the metal sleeve to face the end of the metal sleeve,

In order to prevent the metal sleeve from rotating inside the synthetic resin body, at least one of the stepped portions of the synthetic resin body and the end of the metal sleeve is provided with a locking groove, and the other is provided with a locking protrusion inserted into the locking groove. Piping connector, characterized in that.
The method of claim 4, wherein

The locking groove and the locking projection is provided with a plurality, respectively

The plurality of catching grooves are divided into a first catching groove provided at the end of the synthetic resin body and a second catching groove provided at the end of the metal sleeve, and the plurality of catching protrusions are provided at the step of the synthetic resin body. Connection mechanism for a pipe, characterized in that divided into a first locking projection and a second locking projection provided at the end of the metal sleeve.
The method of claim 4, wherein

The locking groove is provided in the middle of the end of the stepped portion facing the end of the metal sleeve, the connecting projection for the pipe, characterized in that provided in the metal sleeve.
In the pipe connecting mechanism for connecting the piping components,

Hollow synthetic resin body formed with a flow path therein;

A metal sleeve inserted into the plastic body so as to be screwed to the piping component, the metal sleeve having a through hole connected to the flow path of the plastic body; And

And a fixing member coupled to the synthetic resin body to fix the metal sleeve to the synthetic resin body.

The metal sleeve is provided with an extension extending outward not to be inserted into the synthetic resin body,

To prevent the metal sleeve from rotating inside the synthetic resin body, one of the ends of the synthetic resin body and the extension portion of the metal sleeve is provided with a locking groove, and the other is provided with a locking protrusion inserted into the locking groove. Plumbing fittings.
The method according to any one of claims 1 to 7,

The fixing member is made of a metal, the pipe coupling mechanism characterized in that the compression deformation to be compressed to the end of the synthetic resin body is fixed to the synthetic resin body.
The method of claim 8,

At least one of the outer surface of the synthetic resin body and the inner surface of the fixing member is provided with a friction projection to increase the friction between the synthetic resin body and the fixing member.
The method according to any one of claims 1 to 7,

Male thread is provided on the outer surface of the end of the synthetic resin body, the internal thread of the fixing member is provided with a female thread corresponding to the male thread of the synthetic resin body.
The method according to any one of claims 1 to 7,

Any one of the outer surface of the synthetic resin body and the inner surface of the fixing member is provided with a fixing projection, the other one of the pipe connecting mechanism characterized in that the fixing groove is provided with the fixing projection is provided.
The method according to any one of claims 1 to 7,

And a sealing member interposed between the synthetic resin body and the metal sleeve to seal between the synthetic resin body and the metal sleeve.
The method according to any one of claims 1 to 7,

The inner surface of the fixing member is connected to the piping for providing a pressing portion for pressing the end of the metal sleeve toward the inside of the synthetic resin body.
The method according to any one of claims 1 to 7,

A male thread is provided on the outer surface of the piping component, and a female thread corresponding to the male thread of the piping component is provided on the inner surface of the metal sleeve.
The method according to any one of claims 1 to 7,

A female thread is provided on an inner surface of the piping component, and a male thread corresponding to the female thread of the piping component is provided on an outer surface of the metal sleeve.