KR102154693B1 - Joining method of PB joint pipe for plastic pipe that can be separated without tools - Google Patents

Abstract

The present invention relates to a method for coupling a PB joint pipe for a plastic pipe that can be separated without a tool. According to the present invention, a plastic pipe can be easily coupled to and separated from a PB joint pipe without a separate tool. A slip ring mounted in an internal part is used by being mounted inside a guide washer which protects the slip ring and can be disassembled and assembled, such that the slip ring is prevented from being eccentric or damaged due to an insertion direction and bending of the plastic pipe, so as to prevent various problems caused thereby, and the number of components is reduced and an assembling structure is improved to be easy, so as to be convenient in disassembly and assembly and minimize construction errors.

Description

Joining method of PB joint pipe for plastic pipe that can be separated without tools}

The present invention enables fastening and disassembly without tools in fastening plastic piping to the joint pipe, and does not cause eccentricity or damage of the internal grip ring, and the number of components is smaller than the existing one and the assembly sequence is simple, and construction errors It relates to a method of coupling PB joint pipes for plastic pipes that can be separated and joined without tools that do not generate any problems.

In general, pipes are used in various ways as a means of transporting fluid, and when installing and using pipes, it is preferable to use them integrally so that no seams are formed. Pipes are produced, cut to a certain length, and distributed to facilitate movement and installation.

Accordingly, when a pipe is used, a pipe connection means is required because the pipe is connected and used as necessary, and conventionally, a joint pipe capable of changing various flow paths has been used to connect a plurality of pipes.

When a pipe is mounted on such a joint pipe, an O-ring for watertightness and a grip ring are used on the outer periphery of the joint pipe to prevent removal of the joint pipe by water pressure.

Such a grip ring protrudes in a circular shape so that a number of grip pieces are inclined downward, but protrudes obliquely toward the insertion direction of the pipe to be mounted, so that when the pipe is about to come off in the opposite direction of the protrusion, the pipe is caught by the plurality of grip pieces and cannot be removed. It has a function to prevent

Conventionally, such a grip ring has a problem that it is difficult to rotate or change its position once it is combined, and it is not easy to replace it.In addition, when the pipe cannot be completely horizontally inserted and inserted into the joint pipe, or the inserted pipe is connected. When the pipe joint is bent, or the joint pipe is disassembled (refastening by mistake, trying to check the tightened state, etc.), such grip ring is bent or eccentricity occurs, which holds the pipe. There is a problem that the pipe is removed because the grip ring does not function properly.

In addition, when such a pipe is made of plastic, scratches or grooves such as scratches are generated in the outer periphery of the pipe as the grip ring is damaged, and even when water leaks into the suction part of the pipe or an O-ring is located, the scratched part There was a problem that water leakage also occurred.

In addition, conventionally, three components consisting of O-rings, space washers, and grip rings must be individually inserted and coupled into the joint pipe, and these components must be installed in the joint pipe according to the initial assembly order.

However, depending on the site situation, there are cases in which field workers have to disassemble and reassemble the assembled product. In this case, one of the three components is omitted and assembled, or the order of combination between each other is reversed. Occurs, and this has a problem leading to leakage.

Accordingly, a method of joint construction of components for joint pipes that can solve this problem is urgently emerging.

Korean Registered Utility Model Publication No. 20-0443803 (Registered 2009.03.09.)

The present invention has been conceived to solve the above problems, and an object of the present invention is to provide three configurations of an O-ring, a space washer, and a grip ring that must be sequentially assembled in a joint pipe in order. The washer is reduced to two configurations,

In the connection structure with the joint pipe, in order not to confuse the assembly sequence and position, only the O-ring is inserted into the joint pipe, and then the guide washer with the pipe inserted from one side of the joint pipe is partially inserted to the extent that the O-ring can be pressed. This is to prevent the problem of reassembling due to missing components or changing the assembly order even if the existing field workers disassemble and reassemble the parts assembled in the joint pipe. .

In addition, the present invention allows the plastic pipe to be disassembled and coupled to the PB joint pipe without a separate tool, but the grip ring mounted with the O-ring protects from eccentricity or damage during the coupling, while the plastic pipe is connected to the PB joint pipe. It is precisely horizontal to the site so that it can be inserted and fastened.

In addition, since the grip ring is configured as a separate guide washer and used, the grip ring can be easily installed on the outer periphery of the plastic pipe, and with free rotation at the mounting position, the inserted plastic pipe is bent or horizontally There is no damage to the grip ring, and there is no damage such as scratches on the plastic pipe, so that problems such as water leakage can be prevented in advance. There is.

Other objects and advantages of the present invention will be described below, and will be understood by examples of the present invention. Further, the objects and advantages of the present invention can be realized by means and combinations shown in the claims.

The present invention is a means for solving the above problems,

A step (S100) in which the grip ring 40 is mounted and fixed inside the first body 10 in the form of a ring;

The second body 20 is detachably coupled to one side of the first body 10 to be configured as a guide washer 30, so that the grip ring 40 is protected inside the guide washer 30 to prevent eccentricity or damage. It does not occur, and the bending of the plastic pipe 60 does not affect the grip ring 40, so that the shape change of the grip ring 40 causes a scratch on the outer periphery of the plastic pipe 60, and the O-ring ( 70) Step of preventing a watertight problem from occurring during fastening (S200);

The step of preparing the PB joint pipe 50 and the plastic pipe 60 to be fastened (S300);

Step (S400) of coupling the O-ring (70) to the outer periphery of one end of the plastic pipe (60);

Fastening the guide washer 30 to be positioned at the front end of the O-ring 70 of the plastic pipe 60 (S500);

One end of the plastic pipe 60 is inserted into the PB joint pipe 50, and a part of the first body 10 of the O-ring 70 and the guide washer 30 is fitted inside the PB joint pipe 50 ( S600);

The cap 80 is fastened to the connection portion of the PB joint 50 to which the plastic pipe 60 is fitted, and the guide washer 30 is fixed so that it is not removed (S700); It characterized in that it consists of.

As we have seen above,

The present invention reduces the components to be combined with the joint pipe into two configurations, an O-ring and a guide washer, and also in the joint structure with the joint pipe, so that the assembly order and position are not confused, after inserting only the O-ring into the joint pipe, The guide washer inserted in the joint pipe is partially inserted and assembled locally enough to press the O-ring on one side of the joint pipe, so that there are cases in which field workers disassemble and reassemble the parts assembled in the joint pipe. Also, there is an effect that the problem of re-assembly does not occur due to the omission of components or the reverse assembly order.

In addition, the present invention has the effect of easy assembly and disassembly between the plastic pipe and the PB joint pipe.

In addition, the present invention has the effect of preventing damage or eccentricity of the grip ring due to misassembly of plastic pipes.

In addition, the present invention has an effect that scratches on the outer periphery of plastic pipes, which are caused by damage to the grip ring, are prevented in advance, so that leakage due to scratches or the like does not occur.

In addition, the present invention has the effect that the grip ring formed on the grip ring inside the guide washer does not bend or change the angle.

In addition, the present invention has the effect of easy disassembly and assembly of the guide washer protecting the grip ring.

1 is a flow chart of an embodiment showing a method of coupling a PB joint pipe for plastic pipes that can be detachably coupled without tools according to the present invention.
2 is a view showing Embodiment 1 according to the present invention.
3 is a view showing a second embodiment according to the present invention.
Figure 4 is a view showing an embodiment of a method for coupling PB joint pipes for plastic pipes that can be detachably coupled without tools according to the present invention.
5 and 6 are partially enlarged views of the coupling portion of FIG. 4.
7 is a view of an embodiment showing a guide washer according to the present invention.
8 is a view of an embodiment showing a first body of the guide washer according to the present invention.
9 is a view of an embodiment showing a second body of the guide washer according to the present invention.
10 is a view of an embodiment showing a grip ring according to the present invention.
11 and 12 are cross-sectional views of one embodiment showing a guide washer according to the present invention.

Before describing various embodiments of the present invention in detail, it will be appreciated that the application is not limited to the details of configurations and arrangements of elements described in the following detailed description or illustrated in the drawings. The present invention may be implemented and practiced in different embodiments and may be performed in various ways. Also, the device or element orientation (eg "front", "back", "up", "down", "top", "bottom" The expressions and predicates used herein with respect to terms such as ", "left", "right", "lateral"), etc. are used only to simplify the description of the present invention, and related devices Or you may find that the element simply indicates or does not mean that it should have a specific orientation. Further, terms such as “first” and “second” are used in this application and the appended claims for purposes of explanation and are not intended to represent or imply any relative importance or spirit.

The present invention has the following features to achieve the above object.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, and thus various alternatives that can be substituted for them at the time of application It should be understood that there may be equivalents and variations.

Hereinafter, a method of coupling a PB joint pipe for a plastic pipe that can be detachably coupled without a tool according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 12.

As a method for coupling a PB joint pipe for a plastic pipe that can be detachably coupled without a tool according to the present invention, the first embodiment and the second are presented, which are as follows.

The first embodiment is a method of fastening all components to plastic pipes in advance, and then inserting these plastic pipes into one end of the PB joint pipe 50 to fasten them.

1. Step of mounting and fixing the grip ring 40 inside the first body 10 in the form of a ring (S100):

When inserting and fastening the plastic pipe (60) at one end of the PB joint pipe (50), install and protect the grip ring (40) that fixes the position so that the plastic pipe (60) is not removed from the PB joint pipe (50) after fastening. This is a step of preparing a guide washer 30 for doing so.

The first body 10 has a structure capable of being separated and assembled from the second body 20 in step S200 to be described later, and the first body 10 has a ring shape through which the inside is penetrated, and the inner periphery To form a portion to which the ring-shaped grip ring 40 is mounted, the grip ring 40 is fixed therein.

2. The second body 20 is detachably coupled to one side of the first body 10 to be configured as a guide washer 30, so that the grip ring 40 is protected inside the guide washer 30 to be eccentric or It prevents damage from occurring, and does not affect the grip ring 40 even if the plastic pipe 60 is bent, so that the shape change of the grip ring 40 causes scratches on the outer periphery of the plastic pipe 60, causing scratches. Step of preventing the occurrence of watertight problems when the O-ring 70 is fastened (S200):

After inserting the grip ring 40 to be fixed to the inner periphery of the first body 10 through the step S100 described above, the second body 20 corresponding to the first body 10 at one side of the first body 10 ) To prevent the grip ring 40 from being removed to the outside. Detailed coupling structures for the first and second bodies will be described below.

3. The step (S300) in which the PB joint pipe 50 and the plastic pipe 60 to be fastened are prepared:

This is a step in which the PB joint pipe 50 and the plastic pipe 60 for inserting and fastening each other are prepared. It is natural that the order of the steps S100 to S300 can be changed according to the user's embodiment.

4. Step of coupling the O-ring 70 to the outer periphery of one end of the plastic pipe 60 (S400) and 5. The guide washer 30 is fastened so that it is located in front of the O-ring 70 of the plastic pipe 60 Step (S500):

This is a step of sequentially mounting the O-ring 70 and the guide washer 30 on the outer periphery of one side of the plastic pipe 60 fitted in the PB joint pipe 50.

When the plastic pipe 60 is fitted into the PB joint pipe 50, the O-ring 70 is first placed in the PB joint pipe 50, and then, the guide washer 30 is inserted. At this time, the guide washer 30 ) Must be fitted so that the first body 10 is positioned in a direction opposite to the O-ring 70, so that the second body 20 of the guide washer 30 is exposed to the outside.

Of course, the grip ring 40 inside the guide washer 30 is installed to have a shape in which a plurality of grip pins protrude downward toward the O-ring 70 side (a shape facing the insertion direction of the plastic pipe 60). It is natural to have.

6. One end of the plastic pipe 60 is inserted into the PB joint pipe 50, and a part of the first body 10 of the O-ring 70 and the guide washer 30 is fitted inside the PB joint pipe 50. Step (S600):

As in step S500 described above, a step of inserting the guide washer 30 so that the portion of the first body 10 to which the grip ring 40 is fixed to the inner periphery is inserted into the PB joint pipe 50.

That is, in the plastic pipe 60, one end of the O-ring 70 and the guide washer 30 is inserted into the PB joint pipe 50, so that the plastic pipe 60 is inserted, the O-ring 70 and the guide It is to have a structure in which the washer 30 is mounted at the same time.

7. Step of fixing the cap 80 so that the guide washer 30 is not removed by fastening the cap 80 to the connection part of the PB joint pipe 50 in which the plastic pipe 60 is fitted (S700):

Through the steps S500 and S600, if the plastic pipe 60 having the O-ring 70 and the guide washer 30 mounted on the outer periphery is inserted into the PB joint pipe 50, the guide washer 30 exposed to the outside. While enclosing the second body 20 of the guide washer 30 so that it is not removed from the PB joint pipe 50, the cap 80 through which the center is passed through the plastic pipe 60 through the PB joint pipe 50 After putting it into the connection part of the, this is a step of fixing by rotating the cap 80.

Of course, a male thread is formed on the outer circumference of one end of the PB joint pipe 50 to which the plastic pipe 60 is coupled, and a female thread is formed on the inner circumference of the cap 80, so that they are coupled through screwing.

When the cap 80 is installed, the guide washer 30 is in close contact with the inner side of the cap 80, and serves to closely contact the guide washer 30 toward the PB joint pipe 50, and the cap ( The hole through the center of 80) is such that the insertion hole H formed in the center of the guide washer 30 has the same diameter.

Thus, the guide washer 30 is assembled by inserting only the first body 10 into one side of the PB joint pipe 50 in which the O-ring 70 is mounted in a state in which the plastic pipe 60 is coupled. , It is easy to disassemble and assemble, and there is no construction error between assembly components.

In the second embodiment, the O-ring 70, the guide washer 30, and the cap 80 are sequentially fastened into the PB joint pipe 50 in advance, and then a plastic pipe is inserted into the PB joint pipe 50 to be fixed. That's how to do it. This second embodiment is the same as the first embodiment up to steps S100 to S300 described above.

4. Step of inserting and coupling the O-ring 70 to the inner periphery of the PB fitting pipe 50 once (S400) and

5. Step of being fastened to the PB joint pipe 50 so that the first body 10 of the guide washer 30 is positioned at the front end of the O-ring 70, so that the second body 20 is exposed to the outside (S500 ) And

6. Step of fixing the cap 80 to the connection part of the PB joint pipe 50 to which the guide washer 30 is fitted, so that the guide washer 30 is not removed (S600):

In the second embodiment, as described in steps S400, S500, and S600, the O-ring 70 and the guide washer 30 are sequentially inserted into one end of the PB joint pipe 50, and at this time, the inserted guide washer 30 2 The body 20 is to be exposed to the outside.

Thereafter, the cap 80 is screwed to the connection portion of the PB joint pipe 50 to which the guide washer 30 is fitted, thereby preventing the O-ring 70 and the guide washer 30 from being removed.

7. Step of inserting and fixing one end of the plastic pipe 60 into one end of the PB joint pipe 50 on which the cap 80 is mounted (S700):

Through the above-described step S600, after the O-ring 70, the guide washer 30, and the cap 80 are all combined, the plastic pipe 60 to be fastened is inserted into the PB joint pipe 50 to be fixed. Is to do. The plastic pipe 60 thus fastened is fixed to the outside by the grip ring 40 inside the guide washer 30 after being fastened to the PB joint pipe 50.

Accordingly, the guide washer 30 is assembled by inserting only the first body 10 into one side of the PB joint 50 in which the O-ring 70 is mounted, so that disassembly and assembly is easy, and construction errors between the assembly components Does not occur.

Accordingly, the present invention reduces the existing three components (O-ring, space washer, and grip ring) to the two configurations of the O-ring 70 and the guide washer 30 from the components coupled to the joint pipe,

In the coupling structure with the joint pipe, unlike the existing three components must be sequentially assembled to the joint pipe, the present invention only the O-ring 70 so that the assembly order and position are not confused, the PB joint pipe 50 After being inserted into, the plastic pipe 60 is inserted into the guide washer 30 from one side of the PB joint pipe 50, and has a structure in which only a part of the O-ring 70 is pressed locally to be assembled. Even if the field workers disassemble and reassemble the parts assembled in the PB joint 50, there is an effect that the problem of reassembling due to missing components or changing the assembly order does not occur.

Hereinafter, the shape and structure of each component having the above construction method will be described in detail.

Looking at the configuration in the present invention, it includes a PB (polybutylene, polybutylene) joint pipe 50, a plastic pipe 60, a guide washer 30, and a grip ring 40.

The PB joint pipe 50 may have various shapes such as a'b' shape and a'ㅗ' shape, and a pipe to be connected is fastened to the end of the PB joint 50 to be fixed.

The PB joint pipe 50 has a jaw for installing the O-ring 70 on the inner periphery of the end to which the pipe is normally fastened, so that the O-ring 70 is a pipe that is fastened inside the PB joint pipe 50. It is located on the outer periphery of the unit to prevent leakage of water to the outside.

In addition, after the pipe is inserted into each end of the PB joint pipe 50, a cap 80 is provided that is screwed by rotating around the outer periphery of the end of the PB joint pipe 50 to fix it.

In the present invention, as a pipe to be fastened, a plastic pipe 60 using a plastic material is the target, and the sleeve 61, which is a circular pipe made of metal, is inserted and fixed at one end of the plastic pipe to be coupled. It is possible.

The grip ring 40 is a well-known technology, and when the plastic pipe 60 is fastened to the PB joint pipe 50, it is located on the outer periphery of the plastic pipe 60, and is in one direction to the PB joint pipe 50. It serves to fix the plastic pipe 60 inserted into the pipe so that it is not removed in the opposite direction by water pressure.

This grip ring 40 has a body 41 in a ring shape, but forms a plurality of grip pieces 42 that are spaced apart from each other and protrude from the body 41 in one direction, and the grip pieces 42 It has a shape formed to be inclined downward toward the center of the grip ring 40 toward the outer periphery of the plastic pipe 60.

The guide washer 30 is used by mounting and fixing the grip ring 40 described above, and the grip ring 40 is protected inside the guide washer 30, so that the plastic pipe 60 is a PB joint. Eccentricity (due to bending) or damage of the grip ring 40 does not occur when detaching from the pipe 50, and the bending of the plastic pipe 60 does not affect the grip ring 40, so the grip ring 40 This is to prevent the occurrence of watertight problems when the O-ring 70 is fastened to the scratches due to the change in shape of the plastic pipe 60.

In the case of the guide washer 30 for this purpose, it serves as a protective tool for the grip ring 40, and has an insertion hole (H) through which the center is penetrated in the longitudinal direction and into which the plastic pipe 60 can be inserted,

Once the outer periphery is formed with a stepped fastening portion 11, one end is inserted correspondingly to the PB fitting pipe 50, so that the end of the PB fitting pipe 50 is positioned at the outer periphery. Of course, the O-ring 70 may be preferentially located inside the PB joint pipe 50 that is fastened in this way.

In addition, in the outer periphery of the other end of the guide washer 30, a rib part 23 for preventing misassembly is formed in the shape of an inclined cross-section. Due to this inclined cross-section, the other end of the guide washer 30 is a PB joint pipe 50 ), so that the operator or the user inserts the other end of the guide washer 30 into the PB joint pipe 50, it can be seen that the coupling is not possible, so the fastening direction of the guide washer 30 is This is to be able to immediately identify that it is the opposite side, not the side of the rib part 23 to prevent misassembly.

This guide washer 30 is composed of a first body 10 and a second body 20 as follows.

As described above, the first body 10 is a portion forming the fastening portion 11 at one end of the outer periphery, has a ring shape, and has a locking projection 12 formed in a ring shape at the inner periphery of the other end, and The circumferential middle portion is a portion to form a seating jaw 13 on which the grip ring 40 is seated.

The second body 20 is a ring-shaped member that is detachably coupled to the first body 10 by forming a plurality of protrusions 22 correspondingly fastened to the aforementioned locking protrusions 12 on the outer periphery. .

These first and second bodies 10 and 20 hold the grip ring 40 mounted inside the first body 10, while maintaining various external pressures and grips according to the direction or bending of the plastic pipe 60. It prevents damage such as eccentricity or bending of the ring 40, and can be freely separated and coupled to each other by the locking projections 12 and the protrusions 22, and the grip ring mounted on the first body 10 The replacement or repair of the 40 or the rotation around the outer periphery of the plastic pipe 60 on which the guide washer 30 is mounted is also possible.

In addition, at the outer periphery of the first body 10, a plurality of through holes 14 are formed on the outer periphery of the first body 10 so as to penetrate to the seating jaw 13 of the inner periphery of the first body 10, By making it possible to push the protrusion 22 of the second body 20 inserted into the locking projection 12 through the through hole 14 with a finger, etc., the first body 10 and the grip ring 40 , The second body 20 is integrally coupled so that it is not separated from each other, but can be separated only by the through hole 14.

In order to prevent eccentricity and shape change of the grip ring 40 mounted inside the guide washer 30 (more specifically, the inside of the first body 10), the first and second deformation preventing ribs 15 and 21 Try to form more.

The first deformation preventing rib 15 is formed on the inner periphery of the first body 10,

When the grip ring 40 is mounted inside, the first body 10 corresponding to the outside of the grip piece 42 so that the grip piece 42 of the grip ring 40 is not deformed beyond a preset angle range It means a ring-shaped stepped jaw formed in an inclined cross-section toward the grip piece 42 on the inner periphery of the.

The first deformation-preventing rib 15 is connected to the seating jaw 13 on which the body of the grip ring 40 is hung to have a multi-stage step shape, and has a relatively smaller diameter than the seating jaw 13.

The second deformation preventing rib 21 is protruding from one end of the second body 20,

One end surface of the second body 20 inserted into the first body 10 is formed to protrude at a bending angle corresponding to the bending angle of the plurality of grip pieces 42 of the grip ring 40, By making the protruding portion correspond to the other end of the grip ring 40, the gripping piece 42 serves to prevent deformation so that it is not turned over in the opposite direction (to the other end) of the plastic pipe 60. .

As described above, although the present invention has been described by the limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following by those of ordinary skill in the technical field to which the present invention pertains. It goes without saying that various modifications and changes are possible within the equivalent range of the claims to be described.

10: first body 11: fastening part
12: stopping jaw 13: receiving jaw
14: through hole 15: first deformation preventing rib
20: second body 21: second deformation preventing rib
22: protrusion 23: erroneous assembly prevention rib
30: guide washer 40: grip ring
41: body 42: grip piece
50: PB joint pipe 60: plastic pipe
61: sleeve 70: O-ring
80: cap
H: insertion hole

Claims (6)

A step (S100) in which the grip ring 40 is mounted and fixed inside the first body 10 in the form of a ring;
The second body 20 is detachably coupled to one side of the first body 10 to be configured as a guide washer 30, so that the grip ring 40 is protected inside the guide washer 30 to prevent eccentricity or damage. It does not occur, and the bending of the plastic pipe 60 does not affect the grip ring 40, so that the shape change of the grip ring 40 causes a scratch on the outer periphery of the plastic pipe 60, and the O-ring ( 70) Step of preventing a watertight problem from occurring during fastening (S200);
The step of preparing the PB joint pipe 50 and the plastic pipe 60 to be fastened (S300);
Step (S400) of coupling the O-ring (70) to the outer periphery of one end of the plastic pipe (60);
Fastening the guide washer 30 to be positioned at the front end of the O-ring 70 of the plastic pipe 60 (S500);
One end of the plastic pipe 60 is inserted into the PB joint pipe 50, and a part of the first body 10 of the O-ring 70 and the guide washer 30 is fitted inside the PB joint pipe 50 ( S600);
The step of fixing the cap 80 so that the guide washer 30 is not removed by fastening the cap 80 to the connection part of the PB joint 50 in which the plastic pipe 60 is fitted (S700); consisting of,
The guide washer 30 is assembled by inserting and assembling only the first body 10 on one side of the PB fitting pipe 50 in which the O-ring 70 is mounted in a state in which the plastic pipe 60 is coupled, It is easy to assemble and prevents construction errors between assembly components.
The guide washer 30 is
A fastening part 11 is formed on the outer periphery of one end of the first body 10, and the first body 10 side is inserted correspondingly to the PB joint pipe 50, and the end of the PB joint pipe 50 is The position is fixed at the periphery, and a rib part 23 for preventing misassembly in the shape of an inclined cross-section is formed on the outer periphery of the second body 20, so that the second body 20 side corresponds to the PB joint pipe 50 It is not inserted so that the direction of fastening can be identified,
The grip ring 40 is
The guide washer 30 is fixedly positioned in a ring shape and mounted, and a plurality of grip pieces 42 are formed to be inclined downward toward the outer periphery of the plastic pipe 60 toward the insertion direction of the plastic pipe 60, Make sure that the pipe 60 is not removed by water pressure after fastening,
When the grip ring 40 is mounted inside the first body 10, the grip piece 42 of the grip ring 40 is not deformed beyond a preset angular range. A first deformation preventing rib 15 formed in an inclined cross-section toward the grip piece 42 on the inner periphery of the corresponding first body 10; And protruding from one end surface of the second body 20 inserted into the first body 10 at a bending angle corresponding to the bending angle of the plurality of grip pieces 42 of the grip ring 40, the outer periphery A second deformation preventing rib 21 that prevents deformation so that the grip piece 42 is not turned over in a direction opposite to the insertion of the plastic pipe 60 by allowing the grip ring 40 to be positioned corresponding to the other end; Is further equipped,
The first body 10 has a locking jaw 12 formed in a ring shape on the inner periphery of the other end, and a seating jaw 13 on which the grip ring 40 is seated is formed in the middle of the inner periphery, and the second The body 20 forms a plurality of protrusions 22 correspondingly fastened to the locking protrusions 12 at one end on the outer periphery to be detachably coupled to the first body 10,
In step S200
The first body 10, the grip ring 40, and the second body 20 are integrally coupled so that they are not separated from each other, but penetrate to the seating protrusion 13 of the inner periphery of the first body 10, the A plurality of through-holes 14 are formed on the outer periphery of the first body 10 to push the protrusion 22 of the second body 20 inserted into the locking protrusion 12 through the through-hole 14. PB for plastic piping that can be detachably coupled without tools, characterized in that the first body 10, the grip ring 40, and the second body 20 are detachable only by the through hole 14 Joint construction method.
delete delete delete delete delete

Images