KR102154692B1 - Grip ring damage prevention device of PB pipe for plastic pipe that can be separated without tools - Google Patents

Abstract

The present invention relates to a device for preventing damage to a PB joint pipe grip ring for a separable plastic pipe without a tool. According to the present invention, when a plastic pipe is fastened to a joint pipe, a grip ring is mounted in an inner part to prevent the grip ring from being damaged and eccentrically mounted regardless of correct fastening of the plastic pipe, in order to prevent a bending or damaging problem due to incorrect fastening of the plastic pipe in the grip ring used for preventing removal of the plastic pipe. Therefore, the damage generated in the plastic pipe is prevented due to the grip ring, thereby not generating leakage thereof. In addition, the number of components is reduced and an assembly structure is easily improved, such that disassembly and assembly are convenient and construction errors are minimized.

Description

Grip ring damage prevention device of PB pipe for plastic pipe that can be separated without tools}

The present invention makes it easy to protect and replace the grip ring that prevents the removal of the plastic pipe when fastening the plastic pipe to the PB joint pipe, the disassembly and assembly is convenient, the number of components is smaller than the existing one, and the assembly procedure is simple, It relates to a device for preventing damage to the grip ring of PB joints for plastic pipes that can be separated and combined without tools that do not cause construction errors.

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, the development of components for fitting pipes that can solve these problems is urgently on the rise.

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 is to secure the position of the plastic pipe when connecting the plastic pipe to the PB joint pipe and to protect the grip ring installed together to prevent removal due to water pressure.

The grip ring is mounted and fixed inside the guide washers that can be disassembled into the first and second bodies, so that the grip ring can be rotated at the fastened position, and eccentricity or shape change does not occur due to the inner shape of the guide washer. , PB joint for plastic pipes that can be detached without tools, which prevents damage to the grip ring in advance and prevents problems such as leaks due to scratches caused by damage to the grip ring. It relates to a pipe grip ring damage prevention device.

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,

It is mounted on the outer periphery end of the plastic pipe 60 that is inserted into the PB joint pipe 50, and once a fastening part 11 is formed on the outer periphery, one end is inserted correspondingly to the PB joint pipe 50, while the PB joint The end of the pipe 50 is fixed in position at the outer periphery, and a rib part 23 for preventing misassembly in the form of an inclined cross-section is formed at the outer periphery of the other end, so that the other end is not inserted correspondingly to the PB joint pipe 50, A guide washer (30) for identifying the direction; 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, A grip ring 40 that prevents the pipe 60 from being removed by hydraulic pressure after fastening; Consists of,

Since the grip ring 40 is protected inside the guide washer 30, when the plastic pipe 60 is detached from the PB joint pipe 50, eccentricity or damage of the grip ring 40 does not occur, and the plastic pipe 60 ) Does not affect the grip ring 40, the shape change of the grip ring 40 causes a scratch on the outer periphery of the plastic pipe 60, causing a watertight problem when the O-ring 70 is fastened to the scratch. It is characterized in that it can be prevented from becoming.

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 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 view of an embodiment showing a guide washer according to the present invention.
Figure 2 is a view of an embodiment showing a first body of the guide washer according to the present invention.
3 is a view of an embodiment showing a second body of the guide washer according to the present invention.
Figure 4 is a view of an embodiment showing a grip ring according to the present invention.
5 and 6 are cross-sectional views of one embodiment showing a guide washer according to the present invention.
7 to 9 is a view of an embodiment showing the coupling state of the plastic pipe gripping damage prevention device for a plastic pipe that can be detachably coupled without a tool 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.

Looking at an embodiment according to the present invention,

It is mounted on the outer periphery end of the plastic pipe 60 that is inserted into the PB joint pipe 50, and once a fastening part 11 is formed on the outer periphery, one end is inserted correspondingly to the PB joint pipe 50, while the PB joint The end of the pipe 50 is fixed in position at the outer periphery, and a rib part 23 for preventing misassembly in the form of an inclined cross-section is formed at the outer periphery of the other end, so that the other end is not inserted correspondingly to the PB joint pipe 50, A guide washer (30) for identifying the direction; 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, A grip ring 40 that prevents the pipe 60 from being removed by hydraulic pressure after fastening; Consists of,

Since the grip ring 40 is protected inside the guide washer 30, when the plastic pipe 60 is detached from the PB joint pipe 50, eccentricity or damage of the grip ring 40 does not occur, and the plastic pipe 60 ) Does not affect the grip ring 40, the shape change of the grip ring 40 causes a scratch on the outer periphery of the plastic pipe 60, causing a watertight problem when the O-ring 70 is fastened to the scratch. To prevent it from becoming

The guide washer 30 is assembled by inserting only one end (a) on 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 do not occur. do.

In addition, the guide washer 30 has a fastening portion 11 formed on the outer periphery at one end, and the locking protrusion 12 is formed in a ring shape on the inner periphery of the other end, and the grip ring 40 is seated at the middle of the inner periphery. A first body 10 on which the seating jaw 13 is formed; A second body 20 detachably coupled to the first body 10 by forming a plurality of protrusions 22 correspondingly fastened to the locking projections 12 at one end on the outer periphery; Consisting of, the first and second bodies (10, 20) can be separated and combined with each other, characterized in that the replacement of the grip ring (40) inside.

In addition, the first body 10, when the grip ring 40 is mounted inside, so that the grip piece 42 of the grip ring 40 is not deformed beyond a preset angle range, the grip piece 42 A first deformation preventing rib 15 formed in an inclined cross section toward the grip piece 42 on the inner periphery of the first body 10 corresponding to the outside; It characterized in that it is provided.

In addition, the first body 10, the grip ring 40, and the second body 20 are integrally coupled and not separated from each other, but the first body 10 is seated on the inner periphery of the first body 10 A through hole 14 is formed on the outer periphery so as to penetrate to the jaw 13, so that the protrusion 22 of the second body 20 inserted into the locking jaw 12 through the through hole 14 can be pushed out. By so doing, it is characterized in that the first body 10, the grip ring 40, and the second body 20 can be separated only by the through hole 14.

The second body 20 is formed protruding from one end surface 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, A second deformation preventing rib 21 that prevents deformation so that the grip piece 42 is not turned over in the direction opposite to the insertion of the plastic pipe 60 by allowing the periphery to be positioned corresponding to the other end of the grip ring 40; is provided. It features.

Hereinafter, an apparatus for preventing damage to a grip ring of 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 9.

PB joint pipe gripping damage prevention device for plastic pipes that can be detachably coupled without tools according to the present invention is a PB (polybutylene, polybutylene) joint pipe 50, a plastic pipe 60, a guide washer 30, 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 made of a plastic material is the object.

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 ring-shaped body 41, 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, Separation of the first and second bodies 10 and 20 is possible by pressing and pushing the protrusion 22 of the second body 20 inserted into the locking protrusion 12 through the through hole 14 with a finger, etc. Make it possible.

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. .

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.

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
70: O-ring 80: cap
H: insertion hole

Claims (5)

It is mounted on the outer peripheral end of the plastic pipe 60 inserted into the PB joint pipe 50,
Once the fastening part 11 is formed at the outer periphery, one end is inserted correspondingly to the PB joint pipe 50, so that the end of the PB joint pipe 50 is fixed to the outer periphery, and the other end has an inclined cross-sectional shape A guide washer 30 that is provided with a rib part 23 to prevent misassembly, so that the other end is not inserted into the PB joint pipe 50 to identify the fastening direction;
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, A grip ring 40 that prevents the pipe 60 from being removed by hydraulic pressure after fastening; Consists of,
The guide washer 30 is
First, the fastening portion 11 is formed on the outer periphery, the locking jaw 12 is formed in a ring shape on the inner periphery of the other end, and the seating jaw 13 on which the grip ring 40 is seated at the middle of the inner periphery is formed. 1 body 10 and; A second body 20 detachably coupled to the first body 10 by forming a plurality of protrusions 22 correspondingly fastened to the locking projections 12 at one end on the outer periphery; Consist of, the first and second bodies (10, 20) can be separated and combined with each other, it is possible to replace the grip ring (40) inside,
The first body 10 corresponds 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 when the grip ring 40 is mounted therein. A first deformation preventing rib 15 formed in an inclined cross-section toward the grip piece 42 on the inner periphery of the first body 10 is provided,
The first body 10, the grip ring 40, and the second body 20 are integrally coupled and are not separated from each other, but the first body 10 is a seating jaw on the inner periphery of the first body 10 A through hole 14 is formed on the outer periphery so as to penetrate to 13), so that the protrusion 22 of the second body 20 inserted into the locking jaw 12 through the through hole 14 can be pushed out. , So that the first body 10, the grip ring 40, and the second body 20 can be separated only by the through hole 14,
The second body 20 is
One end surface 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, so that the outer circumference of the grip ring 40 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 making the position corresponding to the other end; Is formed,
Since the grip ring 40 is protected inside the guide washer 30, when the plastic pipe 60 is detached from the PB joint pipe 50, eccentricity or damage of the grip ring 40 does not occur, and the plastic pipe 60 ) Does not affect the grip ring 40, the shape change of the grip ring 40 causes a scratch on the outer periphery of the plastic pipe 60, causing a watertight problem when the O-ring 70 is fastened to the scratch. To prevent it from becoming
The guide washer 30 is assembled by inserting only one end (a) on 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 do not occur. PB joint pipe grip ring damage prevention device for plastic piping that can be separated and combined without any tools delete delete delete delete

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