KR200495710Y1 - Pipe joint - Google Patents

Abstract

The present invention relates to a pipe joint, and more particularly, to a pipe joint designed to be implemented to simplify the coupling of the pipe as well as to eliminate the risk of leakage and leakage in the case of repeated use, one outer circumferential surface A joint body in which a first threaded portion is formed along the; an inner tubular portion protruding from the other side of the joint body; at least one O-ring part spaced apart at regular intervals along the outer circumferential surface of the inner tubular part and installed at least one; The inner tubular portion is formed to protrude from the other side of the joint body while forming an inner diameter larger than the outer diameter of the inner tubular portion so that the inner tubular portion can be disposed in the inner space, and a second screw portion is formed along the outer circumferential surface, and at least one through hole (Through Hole) ) the outer tubular portion is formed; a pipe receiving portion formed between an outer circumferential surface of the inner tubular portion and an inner circumferential surface of the outer tubular portion; a coupling nut formed along an inner circumferential surface of a third screw portion screwed with the second screw portion; and a tightening ring that is formed to be bent in a "C" shape to form a slit extending in the axial direction, and which covers the inner tubular part and surrounds the outside of the inserted pipe and is seated.

Description

pipe joint {PIPE JOINT}

The present invention relates to a pipe joint, and more particularly, to a pipe joint designed to be implemented so as to simplify the coupling of the pipe as well as to eliminate the risk of leakage and leakage in the case of repeated use.

In general, a pipe is mainly used for transporting fluids such as water, oil, gas, etc., and since the length of such a pipe is limited, when the entire length of the transport line is long, it has a plurality of connection parts in the middle. . The pipes are closely connected to each other through a separate pipe joint at these connecting parts.

Such a pipe joint serves to prevent leakage and leakage of a fluid, such as tap water, when a fluid such as tap water passes through a connected portion by connecting another pipe to one end of the pipe. In general, a pipe joint is a device having various shapes, such as a straight line type, an elbow type, a T shape, and a cross type, and is widely used for industry and home use.

That is, a general pipe joint widely used in the prior art is fastened by welding a connection part of a pipe or using a separate fixing means such as a screw in order to increase the connectivity and airtightness.

In the case of a conventional pipe joint, since the tightening ring uses a nut mounting method, the exact center of the tightening ring and the nut do not match, and when the tightening ring is inserted into the nut by forcibly fitting, the tightening ring is not narrowed and the tightening ring is separated from the nut. happened frequently.

On the other hand, the above-mentioned background technology is technical information that the designer had for the derivation of the present invention or acquired in the process of derivation of the present invention, and it cannot be said that it is necessarily known technology disclosed to the general public before the application of the present invention. .

Korean Patent Registration No. 10-2297906

One aspect of the present invention is a pipe joint that is implemented to effectively prevent the tightening ring from being separated from the nut when the pipe is fastened by securing a sufficient gap between the tightening ring and the inner tube and mounting the tightening ring on the joint body rather than inside the nut. provides

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

A pipe joint according to an embodiment of the present invention includes a joint body in which a first threaded portion is formed along one outer circumferential surface so as to be fastened to a metal pipe; an inner tubular part protruding from the other side of the joint body so that the pipe is inserted and the fluid flows; at least one O-ring part spaced apart at regular intervals along the outer circumferential surface of the inner tubular part and installed at least one; The inner tubular portion is formed to protrude from the other side of the joint body while forming an inner diameter larger than the outer diameter of the inner tubular portion so that the inner tubular portion can be disposed in the inner space, and a second threaded portion is formed along an outer circumferential surface of the inner tubular portion. an outer tubular part in which at least one through hole is formed while facing one end of the inner tubular part so that the pipe inserted up to one end of the inner tubular part can be visually confirmed from the outside; a pipe receiving portion formed between an outer circumferential surface of the inner tubular portion and an inner circumferential surface of the outer tubular portion to accommodate the pipe; a coupling nut formed along an inner circumferential surface of a third screw portion screw-coupled to the second screw portion; and a slit formed by bending in a "C" shape to form a slit extending in the axial direction, covering the inner tubular part and surrounding and seated on the outside of the inserted pipe, while the coupling nut rotates in one direction of the joint body and a tightening ring for fastening the pipe as the inner diameter is reduced while being advanced together by the coupling nut as it advances.

In one embodiment, the tightening ring is bent in a "C" shape to form a slit extending in the axial direction, and wraps around the outside of the pipe inserted and covers the inner tubular part and is seated by the coupling nut a sleeve whose inner diameter is reduced while being advanced and being inserted into the pipe receiving portion; one inclined surface formed along one outer peripheral surface of the sleeve while facing the other inner peripheral surface of the outer tubular part; a locking jaw protruding along the one inclined surface; and at least one inner fastening jaw installed to be spaced apart from each other at regular intervals along the inner circumferential surface of the sleeve.

In one embodiment, the outer tubular portion, along the other inner circumferential surface of the outer tubular portion opposite to the one side inclined surface so that the tightening ring can be inserted into the pipe receiving portion while the inner diameter is reduced, corresponding to the inclination of the one inclined surface. It is possible to form the other inclined surface to be formed.

In an embodiment, the outer tubular portion may have a locking groove formed along the other inclined surface so that the locking jaw is seated so that the tightening ring can be temporarily mounted before being inserted into the pipe receiving part.

In one embodiment, as the tightening ring is inserted into the pipe receiving portion while the inner diameter is reduced, the engaging jaw may be separated from the engaging groove.

In one embodiment, the coupling nut is seated on the other side inclined surface formed in a symmetrical structure with the one side inclined surface on the other side of the tightening ring opposite to the one side inclined surface so as to be able to press the tightening ring facing the other inclined surface. The other inner peripheral surface may form an inclined surface corresponding to the inclination angle of the other inclined surface.

In one embodiment, the inner tubular portion, a first pipe protruding from the other side of the joint body; a second pipe extending from the other end of the first pipe, the second pipe being formed to gradually decrease in outer diameter toward the other side; and a third pipe extending from the other end of the second pipe and having at least one stopping protrusion protruding in an inclined shape in the insertion direction of the pipe so as to be in close contact with the inner circumferential surface of the pipe to be inserted along the outside. can

In one embodiment, the O-ring portion, a first O-ring installed along the outer peripheral surface of the first pipe; a second O-ring spaced apart from the first O-ring in the other direction and installed along an outer circumferential surface of the first pipe; and a third O-ring spaced apart from the second O-ring in the other direction and installed along an outer circumferential surface of the third pipe.

In an embodiment, the first O-ring may be formed to have the same thickness as the second O-ring.

In an embodiment, the third O-ring may be formed to have a thickness greater than that of the first O-ring or the second O-ring.

In one embodiment, the O-ring part includes a diameter of a circle formed by the outer circumferential surface of the first O-ring, a diameter of a circle formed by the outer circumferential surface of the second O-ring, and a circle formed by the outer circumferential surface of the third O-ring. The diameters may be the same as each other.

According to one aspect of the present invention described above, while securing a sufficient gap between the tightening ring and the inner tube, the tightening ring is mounted on the joint body rather than inside the nut, thereby preventing the tightening ring from being separated from the nut when fastening the pipe. can do.

The effect of the present invention is not limited to the above-mentioned effects, and various effects may be included within the range apparent to those skilled in the art from the content to be described below.

1 is a view showing a schematic configuration of a pipe joint according to an embodiment of the present invention.
2 and 3 are views showing the tightening ring of FIG.
4 and 5 are views illustrating a connection relationship between the inner tubular part and the O-ring part of FIG. 1 .
6 is a cross-sectional view of a pipe joint according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS For the detailed description of the present invention to be described below, reference is made to the accompanying drawings, which show by way of example specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention with respect to one embodiment. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scopes equivalent to those claimed by the claims. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

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

1 is a view showing a schematic configuration of a pipe joint according to an embodiment of the present invention.

Referring to FIG. 1 , a pipe joint 10 according to an embodiment of the present invention includes a joint body 100 , an inner tubular part 200 , an O-ring part 300 , an outer tubular part 400 , and a pipe receiving part. ( 500 ), a coupling nut ( 600 ) and a tightening ring ( 700 ).

The joint body 100 has a first screw portion 110 formed along an outer circumferential surface of one side so as to be fastened to a metal tube (not shown in the drawing for convenience of explanation), and an inner tube-shaped portion on the other side (lower side with reference to FIG. 1 ) 200 and the outer tubular portion 400 are formed to extend.

The inner tubular part 200 is formed to protrude from the other side of the joint body 100 so that the pipe P is inserted along the outer circumferential surface so that the fluid can flow, and at least one O-ring part 300 is installed along the outer circumferential surface. .

The O-ring part 300 is in close contact with the inner peripheral surface of the pipe (P) to improve the airtight performance to prevent the fluid flowing along the pipe (P) from flowing out at regular intervals along the outer peripheral surface of the inner tubular part (200). At least one is installed spaced apart.

The outer tubular portion 400 forms an inner diameter larger than the outer diameter of the inner tubular portion 200 so that the inner tubular portion 200 can be disposed in the inner space with the pipe receiving portion 500 interposed therebetween, while forming the joint body 100 ) is formed to protrude from the other side, and a second screw portion 410 is formed to engage and connect to the third screw portion 610 along the outer circumferential surface.

In one embodiment, the outer tubular portion 400 is the inner tubular portion 200 along the outer circumferential surface of the inner tubular portion 200 to one end of the inner tubular portion 200 so as to visually confirm whether the pipe (P) is well fitted from the outside. At least one through hole 440 may be formed while facing one end of the tubular portion 200 .

The pipe receiving portion 500 is formed between the outer peripheral surface of the inner tubular portion 200 and the inner peripheral surface of the outer tubular portion 400 so that the pipe (P) can be accommodated.

The coupling nut 600 is formed along the inner circumferential surface of the third screw portion 610 screw-coupled to the second screw portion 410 , and as it is fastened along the outer circumferential surface of the outer tubular portion 400, the tightening ring 700 is piped. It is inserted into the receiving part (500).

The tightening ring 700 is rounded in a "C" shape to form a slit (S) extending in the axial direction, and covers the inner tubular part 200 and surrounds the outside of the inserted pipe (P) and is seated. , As the coupling nut 600 rotates and advances in one direction of the joint body 100, the inner diameter is reduced while advancing together by the coupling nut 600 to fasten the pipe (P).

The pipe joint 10 according to an embodiment of the present invention having the configuration as described above secures a sufficient gap between the tightening ring 700 and the inner tubular portion 200 and simultaneously connects the tightening ring 700 with the coupling nut. (600) By mounting on the joint body 100 rather than the inside, it is possible to effectively prevent the tightening ring 700 from being separated from the coupling nut 600 when the pipe (P) is fastened.

2 and 3 are views showing the tightening ring of FIG.

2 and 3 , the tightening ring 700 includes a sleeve 710 , one inclined surface 720 , a locking jaw 730 , and at least one inner fastening jaw 740 .

The sleeve 710 is rounded in a "C" shape to form a slit (S) extending in the axial direction, and covers the inner tubular part 200 and wraps around the outside of the inserted pipe (P) and is seated and coupled The inner diameter is reduced while being advanced by the nut 600 and inserted into the pipe receiving portion 500 , and one inclined surface 720 is formed along one outer circumferential surface, and at least one inner fastening jaw 740 is formed along the inner circumferential surface.

One inclined surface 720 is formed along one outer peripheral surface of the sleeve 710 while opposing the other inner peripheral surface of the outer tubular portion 400, and a locking protrusion 730 is formed along the outer side.

The locking jaw 730 is formed to protrude along one inclined surface 720 and is seated in the locking groove 430 of the outer tubular part 400 .

The inner fastening jaws 740 are installed to be spaced apart at regular intervals along the inner circumferential surface of the sleeve 710 so as to fasten the outer circumferential surface of the pipe (P).

In one embodiment, the outer tubular portion 400 is the other side of the outer tubular portion 400 opposite to the one inclined surface 720 so that the tightening ring 700 can be inserted into the pipe receiving portion 500 while the inner diameter is reduced. The other inclined surface 420 forming an inclined surface may be formed along the inner circumferential surface to correspond to the inclination of the one inclined surface 720 .

In one embodiment, the outer tubular portion 400 is a locking groove along the other inclined surface 420 so that the locking jaw 730 is seated so that the tightening ring 700 can be temporarily mounted before being inserted into the pipe receiving part 500 . 430 may be formed.

In one embodiment, as the tightening ring 700 is inserted into the pipe receiving part 500 while the inner diameter is reduced, the locking jaw 730 may be separated from the locking groove 430 .

In one embodiment, the coupling nut 600 is, as shown in FIG. 6, the other side inclined surface 750 formed in a symmetrical structure with the one inclined surface 720 on the other side of the tightening ring 700 opposite to the one inclined surface 720. ) and the other inner peripheral surface 620 opposite to the other inclined surface 750 so as to press the tightening ring 700 while advancing as it rotates to form an inclined surface corresponding to the inclination angle 750 of the other inclined surface.

The tightening ring 700 having the configuration as described above is mounted in a one-touch manner on the outer tubular portion 400 rather than the inside of the coupling nut 600, thereby stably tightening the pipe (P) when the pipe (P) is fastened. Of course, it can be effectively prevented from being separated from the coupling nut (600).

4 and 5 are views illustrating a connection relationship between the inner tubular part and the O-ring part of FIG. 1 .

4 and 5 , the inner tube-shaped part 200 includes a first pipe 210 , a second pipe 220 , and a third pipe 230 .

The first pipe 210 is formed to extend in a cylindrical shape, is formed to protrude from the other side of the joint body 100, and a second pipe 220 is formed to extend from the other end, and the first O-ring 310 and the first O-ring 310 along the outer circumferential surface. 2 O-ring 320 is installed, the outer diameter (b1) is formed larger than the outer diameter (b3) of the third pipe (230).

The second pipe 220 is formed to extend from the other end of the first pipe 210, and is formed to extend in a shape in which the outer diameter gradually decreases toward the other side, such as a cone shape, and the third pipe 230 having a cylindrical shape from the other end. This extension is formed,

The third pipe 230 is formed to extend from the other end of the second pipe 220, and is provided to protrude in an inclined shape in the insertion direction of the pipe P so as to be in close contact with the inner circumferential surface of the pipe P to be inserted. At least one 231 is formed along the outside, the third O-ring 330 is installed along the outer circumferential surface, and the outer diameter b3 is smaller than the outer diameter b1 of the first pipe 210 .

4 and 5 , the O-ring part 300 includes a first O-ring 310 , a second O-ring 320 , and a third O-ring 330 .

The first O-ring 310 is formed in a circular ring shape and installed along the outer circumferential surface of the first pipe 210 .

The second O-ring 320 is formed in a circular ring shape, is spaced apart from the first O-ring 310 in the other direction, and is installed along the outer circumferential surface of the first pipe 210 .

The third O-ring 330 is formed in a circular ring shape, is spaced apart from the second O-ring 320 in the other direction, and is installed along the outer circumferential surface of the third pipe 230 .

In this case, the thickness R1 of the first O-ring 310 is the same as the thickness R2 of the second O-ring 320 , and the thickness R3 of the third O-ring 330 is the first O-ring 310 . Alternatively, the thickness of the second O-ring 320 is preferably thicker than the thicknesses R1 and R2.

Accordingly, the O-ring part 300 has a diameter a1 of a circle formed by the outer circumferential surface of the first O-ring 310 and a circle formed by the outer circumferential surface of the second O-ring 320 as shown in FIG. 5 . The diameter a2 and the diameter a3 of the circle formed by the outer circumferential surface of the third O-ring 330 may be identical to each other.

The inner tubular part 200 and the O-ring part 300 having the configuration as described above form a space sufficient for the pipe P to be inserted between the tightening ring 700 and the inner tubular part 200, so that FIG. As shown in, when the pipe (P) is inserted into the pipe receiving part 500, the interference by the tightening ring 700 or the inner tubular part 200 seated on the outer tubular part 400 is minimized. can

The above-described embodiments are for illustration, and those of ordinary skill in the art to which the above-described embodiments belong can easily transform into other specific forms without changing the technical idea or essential features of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.

The scope to be protected through the present specification is indicated by the following claims rather than the above detailed description, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and their equivalents.

10: pipe joint
100: joint body
200: inner tubular part
300: O-ring
400: outer tubular part
500: pipe receiving part
600: coupling nut
700: tightening ring

Claims (10)

a joint body in which a first screw portion is formed along an outer circumferential surface of one side so as to be fastened to a metal tube;
an inner tubular part protruding from the other side of the joint body so that a pipe is inserted and the fluid flows;
an O-ring part which is spaced apart at regular intervals along the outer peripheral surface of the inner tube-shaped part and installed at least one or more;
The inner tubular portion is formed to protrude from the other side of the joint body while forming an inner diameter larger than the outer diameter of the inner tubular portion so that the inner tubular portion can be disposed in the inner space, and a second threaded portion is formed along the outer circumferential surface, along the outer circumferential surface of the inner tubular portion an outer tubular part in which at least one through hole is formed while facing one end of the inner tubular part so that the pipe inserted up to one end of the inner tubular part can be visually confirmed from the outside;
a pipe receiving portion formed between an outer circumferential surface of the inner tubular portion and an inner circumferential surface of the outer tubular portion to accommodate the pipe;
a coupling nut formed along an inner circumferential surface of a third screw portion screwed with the second screw portion; and
It is formed by bending in a "C" shape to form a slit extending in the axial direction, and is seated while covering the inner tubular part and surrounding the outside of the inserted pipe, and the coupling nut rotates and advances in one direction of the joint body Including; and a tightening ring for fastening the pipe as the inner diameter is reduced while being advanced together by the coupling nut.
The tightening ring is
It is formed by bending in a "C" shape to form a slit extending in the axial direction, covering the inner tubular part and surrounding and seated on the outside of the inserted pipe, and is advanced by the coupling nut and inserted into the pipe receiving part. shrinking sleeves;
one inclined surface formed along one outer peripheral surface of the sleeve while facing the other inner peripheral surface of the outer tubular part;
a locking jaw protruding along the one inclined surface; and
At least one inner fastening jaw installed to be spaced apart at regular intervals along the inner circumferential surface of the sleeve;
The outer tubular portion,
The other side inclined surface forming an inclined surface corresponding to the inclination of the one inclined surface is formed along the other inner peripheral surface of the outer tubular part opposite to the one inclined surface so that the tightening ring can be inserted into the pipe receiving part while the inner diameter is reduced,
The outer tubular portion,
A pipe joint in which a locking groove is formed along the other inclined surface so that the locking jaw is seated so that the tightening ring can be temporarily mounted before being inserted into the pipe receiving part.
According to claim 1, The tightening ring,
As the inner diameter decreases and is inserted into the pipe receiving portion, the locking jaw is separated from the locking groove, a pipe joint.
According to claim 1, wherein the coupling nut,
The other inner circumferential surface opposite to the other inclined surface corresponds to the inclination angle of the other inclined surface so as to be seated on the other inclined surface formed in a symmetrical structure with the one inclined surface on the other side of the tightening ring opposite to the one inclined surface to press the tightening ring. A pipe joint that forms a sloped surface.
According to claim 1, wherein the inner tubular portion,
a first pipe protruding from the other side of the joint body;
a second pipe extending from the other end of the first pipe, the second pipe being formed to gradually decrease in outer diameter toward the other side; and
A third pipe extending from the other end of the second pipe and having at least one stopping protrusion formed along the outside thereof, which protrudes in an inclined shape in the insertion direction of the pipe so as to be in close contact with the inner circumferential surface of the pipe to be inserted; pipe joint.
According to claim 4, wherein the O-ring portion,
a first O-ring installed along an outer circumferential surface of the first pipe;
a second O-ring spaced apart from the first O-ring in the other direction and installed along an outer circumferential surface of the first pipe; and
and a third O-ring spaced apart from the second O-ring in the other direction and installed along an outer circumferential surface of the third pipe.
6. The method of claim 5,
The first O-ring is
It is formed to have the same thickness as the second O-ring,
The third O-ring is
A pipe joint formed to have a thickness greater than that of the first O-ring or the second O-ring.
The method of claim 6, wherein the O-ring portion,
A pipe in which a diameter of a circle formed by the outer peripheral surface of the first O-ring, a diameter of a circle formed by an outer peripheral surface of the second O-ring, and a diameter of a circle formed by the outer peripheral surface of the third O-ring are the same joint.
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