KR100917120B1 - Coupler for Pipe - Google Patents

Abstract

The present invention relates to a pipe coupler, comprising: a tubular spacer (10) surrounding an outer circumferential surface of the end side of the first and second pipes (P1) and (P2); First and second hermetic members 20 and 30 which are sandwiched by the first and second pipes P1 and P2 and are in close contact with both ends of the spacer 10; Part of the spacer 10 and the first hermetic member 20, the first screw portion 41 is formed on one outer circumferential surface and the first taper 42 is formed on the other outer circumferential surface of the first taper 42 which becomes smaller toward the end 1 body 40; The inner part of the spacer 10 and the second hermetic member 30 are embedded in a position facing the first body 40, and the annular protrusion 53 is formed at the portion facing the first screw portion 41. A second body 50 having a second taper 52 whose inner diameter decreases toward the end on the opposite inner peripheral surface thereof; The first fixing ring 60 having an annular shape that is cut inside the first taper 42 on the side of the first hermetic member 20 to prevent the first pipe P1 from being separated from the first body 40. )and; The second fixing ring 70 having an annular shape that is cut inside the second taper 52 on the side of the second hermetic member 30 to prevent the second pipe P2 from being separated from the second body 50. )and; The second screw portion 81 is screwed to the first screw portion 41 is formed on one side inner circumferential surface, and the annular engaging portion 83 on which the annular protrusion 53 of the second body 50 is walked is formed on the other inner circumferential surface. And, the first body 40 and the second body 50, the joint 80 for close contact with each other; characterized in that it comprises a.

Description

Coupler for pipes {A pipe coupler}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupler for coupling a pipe, and more particularly, to a pipe coupler for mutually coupling a pipe through which a high pressure fluid flows.

Generally, pipes used as sewage pipes, sewage pipes, gas pipes, etc. are made of synthetic resin or metal. These pipes are finite in length, so they are connected by separate couplers. Such a coupler is typically implemented by covering a rubber band on the outer circumferential surface of the connection portion in contact with the ends of both pipes, and adding a reinforcing pipe to the outside of the rubber band.

However, in the coupler of the above structure, when the high pressure fluid flows into the pipe, the rubber band may be damaged by the high pressure, and thus, the airtightness may not be maintained. In addition, there is a problem that a lot of hands were required because workability was not good, such as using a bond harmful to the human body in the process of covering the rubber band or using multiple bolt nuts to cover the reinforcement pipe.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a pipe coupler that can fundamentally prevent airtight damage caused by high pressure even if a high pressure fluid flows into the coupled pipe.

It is another object of the present invention to provide a pipe coupler that can minimize the work required in the process of coupling the pipe by facilitating the coupling of the pipe.

In order to achieve the above object, the pipe coupler according to the present invention,

A tubular spacer 10 surrounding the outer circumferential surface of the end side of the first and second pipes P1 and P2; First and second hermetic members 20 and 30 which are sandwiched by the first and second pipes P1 and P2 and are in close contact with both ends of the spacer 10; As a part of the spacer 10 and the first hermetic member 20 are embedded therein, a first screw portion 41 is formed on one outer circumferential surface and a first taper 42 is formed on the other outer circumferential surface to decrease the inner diameter toward the end. First body 40; The inner part of the spacer 10 and the second hermetic member 30 are embedded in a position facing the first body 40, and the annular protrusion 53 is formed at a portion facing the first screw portion 41. A second body 50 having a second taper 52 formed thereon and having an inner diameter smaller toward the end on the opposite inner peripheral surface thereof; Located in the first taper 42 on the side of the first hermetic member 20 to prevent the first pipe P1 from being separated from the first body 40, the first fixing having a cut annular shape Ring 60; The second sealing member is located in the second taper 52 on the side of the second hermetic member 30 to prevent the second pipe P2 from being separated from the second body 50 and has a cut annular shape. Fixing ring 70; A second screw portion 81 is formed on one side of the inner circumferential surface to be screwed to the first screw portion 41, and an annular engaging portion 83 on which the annular protrusion 53 of the second body 50 hangs on the other inner circumferential surface thereof. It is formed, the first body 40 and the second body 50, the joint 80 for close contact with each other; characterized in that it comprises a.

In the present invention, first spacer tapers (11a) (11b) are formed at both ends of the spacer (10), the inner diameter of which increases toward the ends thereof; The first hermetic member 20 is in close contact with the first spacer taper 11a and is integral with the hermetic o-ring 21 made of an elastic material and the hermetic o-ring 21 to form the hermetic o-ring 21. 1, for pressurizing toward the spacer taper 11a, and including a backup o-ring 22 made of a metallic material; The second hermetic member 30 is in close contact with the first spacer taper 11b and is integral with the hermetic o-ring 31 made of an elastic material, and the hermetic o-ring 31 to seal the hermetic o-ring 31. And a backup o-ring 32 for pressurizing to the first spacer taper 11b side.

In the present invention, the first and second pipes P1 and P2 are uniformly formed by maintaining the first and second fixing rings 60 and 70 in the backup o-rings 22 and 32. Back-up O-ring tapers 22a and 32a are formed for tightening.

According to the pipe coupler according to the present invention, the first and second hermetic members are inserted into each of the first and second pipes to be in close contact with both end portions of the spacer, and a first screw portion is formed at one outer circumferential surface thereof, and an inner diameter thereof is increased toward the end on the other outer circumferential surface thereof. A first body having a first taper that is made smaller, a second body having an annular protrusion formed at a portion facing the first screw portion, and a second taper having an inner diameter smaller on the opposite inner circumferential surface toward the end, and inside the first taper. A cut annular first retaining ring positioned so that the first pipe does not escape from the first body and a cut annular shape positioned inside the second taper to prevent the second pipe from leaving the second body It includes a retaining ring and a joint that connects the first body and the second body to each other, thereby essentially preventing airtight damage caused by high pressure even if a high pressure fluid flows into the coupled pipe. can do. Furthermore, since the coupling of the first and second pipes is possible by a simple operation of rotating the joint, there is an action and an effect of minimizing one-hand loss consumed in the coupling.

Hereinafter, a pipe coupler according to the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of a pipe coupler according to the present invention, FIG. 2 is an exploded view of the pipe coupler of FIG. 1, FIG. 3 is a cross-sectional view of the pipe coupler of FIG. 1, and FIG. 4 is an excerpt perspective view of the spacer of FIG. 2. 5 is a perspective view of the first and second airtight members of FIG. 2, and FIG. 6 is a view for explaining a positional relationship between the first and second airtight members of FIG. 2 and the first and second fixing rings.

As shown, the pipe coupler according to the present invention includes: a tubular spacer 10 surrounding the outer circumferential surface of the end side of the first and second pipes P1 and P2; First and second hermetic members 20 and 30 which are sandwiched by the first and second pipes P1 and P2 and are in close contact with both ends of the spacer 10; Part of the spacer 10 and the first hermetic member 20, the first screw portion 41 is formed on one outer circumferential surface and the first taper 42 is formed on the other outer circumferential surface of the first taper 42 which becomes smaller toward the end 1 body 40; The inner part of the spacer 10 and the second hermetic member 30 are embedded in a position facing the first body 40, and the annular protrusion 53 is formed at the portion facing the first screw portion 41. A second body 50 having a second taper 52 whose inner diameter decreases toward the end on the opposite inner peripheral surface thereof; A first fixing ring having an annular shape that is cut inside the first taper 42 on the side of the first hermetic member 20 to prevent the first pipe P1 from being separated from the first body 40. 60); A second fixing ring having an annular shape that is cut inside the second taper 52 on the side of the second hermetic member 30 to prevent the second pipe P2 from being separated from the second body 50 ( 70); The second screw portion 81 is screwed to the first screw portion 41 is formed on one side inner circumferential surface, and the annular engaging portion 83 on which the annular protrusion 53 of the second body 50 is walked is formed on the other inner circumferential surface. It includes; a joint (80) for close contact with the first body (40) and the second body (50).

The spacer 10 has a tubular shape surrounding the outer circumferential surfaces of the first and second pipes P1 and P2. As shown in FIGS. 3 and 4, first spacer tapers 11a and 11b are formed at both ends of the spacer 10, the inner diameter of which increases toward the ends. The first spacer taper (11a) (11b) is in close contact with the airtight O-rings 21 and 31 of the first and second airtight members 20 and 30, which will be described later, to enable airtightness.

In addition, second spacer tapers 12a and 12b are formed on the inner circumferential surface of the spacer 10, the inner diameter of which increases toward both ends. The end portions of the first pipe P1 and the second pipe P2 are separated from each other by the second spacer tapers 12a and 12b.

As shown in FIGS. 3 and 5, the first hermetic member 20 is in close contact with the first spacer taper 11a and is integral with the airtight O-ring 21 made of an elastic material and the airtight O-ring 21. It includes a backup o-ring 22 made of a metallic material for pressurizing the hermetic o-ring 21 toward the first spacer taper 11a.

The second hermetic member 30 is in close contact with the first spacer taper 11b and is integral with the hermetic o-ring 31 made of an elastic material and the hermetic o-ring 31, and the hermetic o-ring 31 is connected to the first spacer taper. And a backup O-ring 32 for pressurizing to the side 11b.

Each of the above airtight O-rings 21 and 31 is fitted to the first spacer taper 11b so that the airtight inclined surfaces 21a and 31a are opposed to the first paper taper 11a and 11b to enable effective airtightness. Is formed. The airtight O-rings 21 and 31 are sandwiched by the first spacer tapers 11a and 11b by the airtight inclined surfaces 21a and 31a, and then adhered to the first spacer tapers 11a and 11b to effectively seal the airtight. To make it possible.

In addition, each of the backup o-rings 22 and 32 maintains the first and second fixing rings 60 and 70, which will be described later, so that the first and second pipes P1 and P2 are replaced. Back-up O-ring tapers 22a and 32a are formed for uniform tightening.

The first and second fixing rings 60 and 70 have a cut annular shape and are made of a metallic material having elasticity. Since the first and second fixing rings 60 and 70 have a cut annular shape, the first and second fixing rings 60 and 70 are narrowed as they enter the first and second tapers 42 and 52, respectively. Tighten the outer circumferential surface with a strong force, thereby preventing the first, second pipe (P1) (P2) from being separated from the first, second body (40, 50) and at the same time prevent the flow by the external force or internal force. Make sure

The joint 80 brings the first body 40 and the second body 50 into close contact with each other. This joint 80 is preferably hexagonal in order to facilitate rotation by a tool such as a wrench.

According to the above structure, when the user rotates the joint 80 in one direction (for example, clockwise), the first body 40 and the second body 50 approach each other. In this case, the first taper 42 of the first body 40 approaches the spacer 10, and the second taper 52 of the second body 50 approaches the spacer 10. Accordingly, the first and second fixing rings 60 and 70 of the metal materials respectively positioned on the first and second taper 42 and 52 sides are narrowed, and the outer peripheral surfaces of the first and second pipes P1 and P2 are narrowed. It is tightly tightened, so that the first and second pipes P1 and P2 are not separated from the first and second bodies 40 and 50 and there is no flow. On the other hand, as the interval between the first body 40 and the second body 50 is narrowed, each of the first and second fixing rings 60 and 70 has a first hermetic member 20 and a second hermetic member 30. Strongly adheres to both ends of the spacer 10, and thus the airtight O-rings 21 and 31 are firmly adhered to the first spacer tapers 11a and 11b at both ends of the spacer 10, thereby enabling airtightness.

By this coupling structure, even if the high pressure fluid flows through the first and second pipes P1 and P2, the first and second pipes P1 and P2 are formed by the first and second bodies 40 ( 50 can be essentially prevented from deviating or flowing.

1 is a perspective view of a coupler for a pipe according to the present invention,

2 is an exploded view of the coupler for pipe of FIG.

3 is a cross-sectional view of the coupler for pipe of FIG.

4 is an exploded perspective view of the spacer of FIG.

5 is a perspective view of the first and second airtight members of FIG.

FIG. 6 is a view for explaining a positional relationship between the first and second hermetic members and the first and second fixing rings of FIG. 2; FIG.

<Description of Signs of Major Parts of Drawings>

10 ... spacer 11a, 11b ... first spacer taper

12a, 12b ... second spacer taper 20, 30 ... first and second airtight members

21, 31 ... Confidential O-ring 22, 32 ... Backup O-ring

22a, 32a ... backup O-ring taper 40 ... first body

41 ... 1st thread part 42 ... 2nd taper

50 ... second body 52 ... second taper

53 ... annular projection 60 ... first fixing ring

70 ... 2nd retaining ring 80 ... Joint

81 ... 2nd thread part 83 ... Annular catch part

Claims (3)

A tubular spacer 10 surrounding the outer circumferential surface of the end side of the first and second pipes P1 and P2; First and second hermetic members 20 and 30 which are sandwiched by the first and second pipes P1 and P2 and are in close contact with both ends of the spacer 10; As a part of the spacer 10 and the first hermetic member 20 are embedded therein, a first screw portion 41 is formed on one outer circumferential surface and a first taper 42 is formed on the other outer circumferential surface to decrease the inner diameter toward the end. First body 40; The inner part of the spacer 10 and the second hermetic member 30 are embedded in a position facing the first body 40, and the annular protrusion 53 is formed at a portion facing the first screw portion 41. A second body 50 having a second taper 52 formed thereon and having an inner diameter smaller toward the end on the opposite inner peripheral surface thereof; Located in the first taper 42 on the side of the first hermetic member 20 to prevent the first pipe P1 from being separated from the first body 40, the first fixing having a cut annular shape Ring 60; Located in the second taper 52 on the side of the second hermetic member 30 to prevent the second pipe P2 from being separated from the second body 50, the second fixing having a cut annular shape Ring 70; A second screw portion 81 is formed on one side of the inner circumferential surface to be screwed to the first screw portion 41, and an annular engaging portion 83 on which the annular protrusion 53 of the second body 50 hangs on the other inner circumferential surface thereof. Is formed, a joint coupler for connecting the first body 40 and the second body 50 to each other; Pipe coupler comprising a, The method of claim 1, First spacer tapers (11a) (11b) are formed at both ends of the spacer (10), the inner diameter of which is increased toward an end thereof; The first hermetic member 20 is in close contact with the first spacer taper 11a and is integral with the hermetic o-ring 21 made of an elastic material and the hermetic o-ring 21 to form the hermetic o-ring 21. 1, for pressurizing toward the spacer taper 11a, and including a backup o-ring 22 made of a metallic material; The second hermetic member 30 is in close contact with the first spacer taper 11b and is integral with the hermetic o-ring 31 made of an elastic material, and the hermetic o-ring 31 to seal the hermetic o-ring 31. And a backup o-ring (32) for pressurizing to the side of the first spacer taper (11b). The method of claim 2, In the backup o-rings 22 and 32, the first and second fixing rings 60 and 70 are held in the correct positions, thereby uniformly tightening the first and second pipes P1 and P2. Coupler for pipes, characterized in that the backing O-ring taper (22a) (32a) is formed.

Images