KR200419768Y1 - Pipe coupling - Google Patents

Abstract

The present invention relates to a pipe coupling that connects two pipes for transporting a fluid to smoothly transport the fluid, and tightly tightens the fluid to be transported so as not to leak from a connecting portion of both pipes. In the, there is no wall on both sides and the annular case (10) surrounding the abutment portion and the outer peripheral surface of the pipe (P, P ') both; First and second tension parts 20 and 30 which are respectively positioned in a symmetrical form on the outer peripheral surfaces of both ends of the annular case 10 and are spot welded, and fastening holes 22 and 32 are formed at predetermined intervals in the longitudinal direction; A bolt 52 having a semi-cylindrical shape having a diameter equal to an arc of an inner circumferential surface of the first tension portion 20 and having a thread provided in the middle of the head, and fastened to a screw thread of the bolt 52. Fastening means 50 comprising a nut 54 and a washer 56 positioned between the bolt 52 and the nut 54 and fitted to the threads of the bolt 52 to increase and decrease the buffering and pulling force. )and; Sealing member 60 for preventing leakage of the contact portion of the pipes (P, P ') located in the annular case 10 is tightened by the fastening means 50; Can also be combined simply, the tension is maintained, the tightening force is maintained and there is an effect that does not leak even after a long time.

Couplings, connections, pipes, sliding surfaces, bolts, nuts, clamping force, watertightness, ribs, ribs

Description

Pipe coupling

1 is a partially exploded perspective view of a conventional pipe coupling

2 is a partially exploded perspective view of an embodiment according to the present invention

3 is a plan sectional view of FIG.

Figure 4 is a perspective view of the first, second tension portion according to the present invention

5 is a perspective view of the bolt according to the present invention

6 is a perspective view showing a sealing member according to the present invention

Figure 7 is a cross-sectional view showing the use state diagram according to the present invention

Figure 8 is a cross-sectional view showing another embodiment of the first and second tension portion according to the present invention

        Degree

9 is a perspective view illustrating the first and second tension portions of FIG. 8;

※ Explanation of main parts of drawing ※

10: annular case 20: first tension portion

22, 32: fastener 24, 34: reinforcement

30: second tension portion 50: fastening means

52: bolt 54: nut

56 washer 60: sealing member

63: flat 64, 66: Mo

65: goal P, P ': pipe

The present invention relates to a pipe coupling that connects two pipes for transferring a fluid to smoothly transfer the fluid, and tightly tightens the fluid to be transported so as not to leak from a connecting portion of both pipes. An annular case formed on both sides such that there is no wall and surrounding the abutting portion of both pipes and the outer circumferential surface of the pipe; First and second tension parts positioned in symmetrical shapes on both ends of the annular case and spot welded, and fastening holes are formed at regular intervals in a longitudinal direction; A bolt having a semi-cylindrical shape having a diameter equal to an arc of an inner circumferential surface of the first tension portion, and having a thread provided with a thread in the middle of the head, a nut fastened to the thread of the bolt, and between the bolt and the nut. A fastening means positioned and configured to wash and fit the threads of the bolt to increase and decrease the cushioning and tensioning force; It relates to a pipe coupling to prevent leakage by consisting of a simple sealing member to maintain the fastening force by a simple combination to prevent the leakage of the contact portion of the pipe located in the annular case tightened by the fastening means.

Conventional pipe couplings can be categorized into annular cases with sidewalls on both sides and edgeless types without sidewalls on both sides, with rubber sealing members inserted therein, and both ends of the case being bolted together with bolts. Tighten by using nuts to bind the connected pipes and improve the watertight force, and connects a plurality of pipes so that the fluid can be smoothly transferred to the desired area.

At this time, the connection part of the pipe and the pipe is the only part that can leak the fluid to be conveyed by the pressure is applied, and various coupling and sealing members have been proposed to improve the sealing force of this part.

Conventional edgeless type pipe couplings have been proposed by the applicant of the present invention, and a representative coupling is shown in FIG. 1.

1 is a partially exploded perspective view of a conventional edgeless type pipe coupling.

Referring to the drawings, the edgeless coupling includes an annular case 100 surrounding the abutting portion of both pipes and the outer circumferential surface of the pipe; Bend both ends of the annular case 100 to the outside and the receiving portion (320, 320a) to allow the support rods (440, 440a) to be described below by spot welding on the outer surface of the annular case 100, this receiving portion (320, 320a) the tension portion 300 is formed at regular intervals in the vertical direction of the vertical direction is formed with a rectangular cutout (340, 340a, 350, 350a); The cylindrical rods 440 and 440a and the through holes of one side are inserted into the upper receiving parts 320 and 320a and the through holes 450 and 450a are formed to allow the body of the bolt 420 to pass therethrough. A fastening part 400 including a nut 460 fastened to the threaded portion 430 of the bolt 420 passing through the 450 and passing through the through hole 450a on the other side; And a sealing member 500 in close contact with the inner circumferential surface of the annular case 100 and having a plurality of regular ribs 520.

Hereinafter will be described in more detail the configuration and operation of the conventional pipe coupling configured as described above.

Two support rods 440 and 440a are inserted into the receiving portions 320 and 320a to connect the bolts 420 and the nuts 460 from both sides of the annular case 100 in a pretightened state. Insert each pipe. At this time, both pipes are inserted along the inner surface of the sealing member 500 so that the ends are inserted until they come into contact with each other without being spaced apart.

After inserting both pipes as above, tighten the bolts 420 and nuts 460 until a constant pressure is obtained using a wrench. When tightened in this way, the receiving portions 320 and 320a of the annular case 100 are approached in contact with each other and the rib 520 of the sealing member 500 is in close contact with the outer circumferential surface of the pipe, the amount of the connection The pipes are connected to each other and the fluid is not leaked out at the pipe connection.

Conventional pipe couplings configured as described above have the advantage of being able to be fastened relatively easily with considerable watertightness, but there is a problem that the cost of having to separately prepare a cylindrical support rod and a cost increase in manufacturing them are accompanied. Inconvenient to hold the bolt and nut with both hands or to have two workers hold each of the bolts and nuts and fasten them with a wrench. There is a disadvantage in that all of them are used or two workers must be mobilized, and the sealing member is stuck due to the long-term compression, so that the watertightness is lowered, and one side of the sealing member is annular when the pipe and the coupling are fastened. Occasionally pushed to the outside of the case, the sealing member is uneven This will be inserted, because there is a poor water-tight power problems.

The present invention provides a simple form of tension in order to solve the problem of the hassle and cost of having to separately provide a pair of support rods existing in the conventional pipe coupling, the inconvenience of having to work the bolt and nut with both hands In order to solve the problem, it is a technical problem of the operator to provide a pipe coupling capable of fastening the coupling to the pipe with one hand.

Pipe coupling according to the present invention in the pipe coupling,

An annular case formed on both sides such that there is no wall and surrounding the abutting portion of both pipes and the outer circumferential surface of the pipe;

First and second tension portions which are positioned in symmetrical forms on the outer circumferential surfaces of both ends of the annular case and are respectively spot welded, and fastening holes are formed at regular intervals in the longitudinal direction;

A bolt having a semi-cylindrical shape having a diameter equal to an arc of an inner circumferential surface of the first tension portion, and having a thread provided with a thread in the middle of the head, a nut fastened to the thread of the bolt, and between the bolt and the nut. A fastening means positioned and configured to wash and fit the threads of the bolt to increase and decrease the cushioning and tensioning force;

It provides a pipe coupling, characterized in that; consisting of a sealing member for preventing the leakage of the portion of the pipe abutment that is positioned inside the annular case tightened by the fastening means.

In addition, the first and second tensile portions are formed in the same length as the longitudinal direction of the annular case, each end of the first and second tension portion is formed in a semicircular shape, the other end is formed with the same curvature as the outer peripheral surface of the annular case It is characterized by.

In addition, the reinforcing bar is formed at regular intervals on the inner circumference of the first and second tension portions to prevent the first and second tension portions from bending when the first and second tension portions are tightened by the fastening means.

In addition, the reinforcement is characterized in that formed in the form of any one of a triangular shape or a semi-circular projection shape around the fastening hole of the first, second tension.

And, one end of the washer is characterized in that it is formed in a semi-circular shape of the same shape as the inner surface of the second tension portion.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention configured as described above will be described in detail.

Figure 2 is a partially exploded perspective view of an embodiment according to the present invention, Figure 3 is a cross-sectional view showing the Figure 2, Figure 4 is a perspective view showing the first and second tension according to the present invention, Figure 5 is a bolt of the present invention 6 is a perspective view showing a sealing member according to the present invention, Figure 7 is a state diagram showing the state of use according to the present invention, Figure 8 is a flat surface showing another embodiment of the first and second tension portion according to the present invention 9 is a perspective view showing the first and second tension portions of FIG. 8.

One embodiment of the present invention is formed so that there is no wall on both sides as shown in Figures 2 to 4 and the annular case (10) surrounding the abutment portion of both pipes (P, P ') and the pipe;

First and second tension parts 20 and 30 which are respectively positioned in a symmetrical form on the outer peripheral surfaces of both ends of the annular case 10 and are spot welded, and fastening holes 22 and 32 are formed at predetermined intervals in the longitudinal direction;

A bolt 52 having a semi-cylindrical shape having a diameter equal to an arc of an inner circumferential surface of the first tension portion 20 and having a thread provided in the middle of the head, and fastened to a screw thread of the bolt 52. Fastening means 50 comprising a nut 54 and a washer 56 positioned between the bolt 52 and the nut 54 and fitted to the threads of the bolt 52 to increase and decrease the buffering and pulling force. );

And a sealing member 60 for preventing leakage of a portion contacting both pipes P and P ′ positioned inside the annular case 10 tightened by the fastening means 50.

In addition, the first and second tensile portions 20 and 30 are formed to have the same length as the longitudinal direction of the annular case 10, and each end of the first and second tension portions 20 and 30 is semicircular. The other end is formed with the same curvature as the outer peripheral surface of the annular case (10).

In addition, the first and second tension units 20 may be prevented from being bent when the first and second tension units 20 and 30 are tightened by the fastening means 50. Reinforcement teeth 24 and 34 are formed at regular intervals on the inner circumference of, 30).

In addition, the reinforcing bar (24, 34) is formed in the form of any one of a triangular shape or a semi-circular projection around the fastening holes (22, 32) of the first, second tension portion (20, 30).

One end of the washer 56 is formed in the shape of a semi-circle having the same shape as the inner surface of the second tension part 30.

On the other hand, the first, second tension portion 20, 30 according to the present invention is formed in the same length as the longitudinal direction of the annular case 10, one end of the first, second tension portion 20, 30 It is formed in a semicircular shape and the other end is formed with the same curvature as the outer circumferential surface of the annular case 10.

In addition, the fastening holes 22 and 32 are formed at regular intervals in the longitudinal direction of the first and second tension portions 20 and 30, and the fastening holes 22 and 32 are formed by punching processing.

The first and second tension parts 20 and 30 made as described above are joined by spot welding in a state in which they are arranged in symmetrical forms on the outer peripheral surfaces of both ends of the annular case 10.

The triangular reinforcements 24 and 34 or semi-circular protrusions as shown in FIGS. 8 and 9 are formed around the fastening holes 22 and 32 formed in the first and second tension portions 20 and 30. It is formed in the form.

The reinforcing bars 24 and 34 are fastening holes 22 and 32 of the first and second tension portions 20 and 30 to tighten the pipes P and P 'which are later fitted into the annular case 10. By tightening the bolt 52 and the nut 54 to be fastened to prevent the first and second tensioning portion 20, 30 to bend in advance and to withstand strong tensile force.

Hereinafter, after briefly explaining the process of manufacturing the coupling of the embodiment for reference, it will be described the action of fastening to the pipe.

First, the fastening process inserts both pipes P and P 'into the center of the sealing member 60.

At this time, a portion where both ends of the pipes (P, P ') abut the state is located at the center of the inside of the sealing member 60, the nut (54) is fastened to the mew (64, 66) of the sealing member (60). As it is pushed toward the plane (63), which is the outer side of the bone (65), the flat state is prevented from leaking the fluid flowing through the pipe (P, P ') and can be introduced from the outside of the pipe (P, P') The liquid is prevented from entering, and even after a time, its shape is not fixed and can be restored (see FIG. 6).

Then, by connecting the outer circumferential surface of the sealing member 60 in which both the pipes P and P 'are inserted in the form in which the annular case 10 is wrapped, the connection is fastened by using the fastening means 50. Simply exit

At this time, each of the outer periphery of the both ends of the annular case 10, the first and second tension portions 20, 30 are arranged in a symmetrical form with each other, the spot welding is completed,

The bolt 52 is already penetrated through the fastening hole 22 of the first tension part 20 and the fastening hole 32 of the second tension part 30, and a nut ( 54 is pre-tightened, and a washer 56 is positioned between the bolt 52 and the nut 54 so that one end of the washer 56 is interviewed with the inner surface of the second tension part 30. It is fastened by tightening the nut 54 by using a wrench under this state in a state of being fitted to the thread of the bolt 52.

When the washer 56 does not have the washer 56 when the bolt 52 and the nut 54 are fastened, the washer 56 takes a worker's hand or a wrench and prevents the fastening operation from being smooth. And provides a cushioning and tensioning effect upon the fastening of the nut 54 of the bolt 52.

In the above described a preferred embodiment of the present invention, the present invention is not limited to the above-described embodiment, it can be carried out by modifying and modifying within the scope not departing from the spirit of the technical idea of the present invention, such modifications And modifications of the technical idea should also be considered to be within the scope of the following claims. As an example, modifications and variations of the first and second tensions and reinforcements, modifications of the shape and structure of the washer, and materials are within the scope of the technical idea of the present invention. Should be regarded as belonging to

Coupling of the present invention made of the shape and structure as described above does not require a separate support rod is not cumbersome at work and has the effect of low cost.

In addition, when the bolt and nut are fastened, the washer is coupled between the bolt and the nut, thereby preventing the worker's hand or the wrench from being caught, thereby providing a smooth operation.

 In addition, the reinforcing bar is formed on the inner circumferential surface of the first and second tension parts, so that the first and second bolts are tightened by fastening the bolts and nuts fastened by the fastening holes of the first and second tension parts to tighten both pipes fitted to the annular case. It is effective in preventing the tension portion from bending and enduring strong tensile force.

Claims (5)

In pipe coupling, An annular case 10 formed so as not to have walls on both sides and surrounding the abutting portions of both pipes P and P ′ and the outer circumferential surface of the pipe; First and second tension parts 20 and 30 which are positioned in symmetrical shapes on the outer circumferential surfaces of both ends of the annular case 10 and are spot welded, and fastening holes 22 and 32 are formed at regular intervals in the longitudinal direction; ; A bolt 52 having a semi-cylindrical shape having a diameter equal to an arc of an inner circumferential surface of the first tension portion 20 and having a thread provided in the middle of the head, and fastened to a screw thread of the bolt 52. Fastening means 50 comprising a nut 54 and a washer 56 positioned between the bolt 52 and the nut 54 and fitted to the threads of the bolt 52 to increase and decrease the buffering and pulling force. )and; Pipe coupling, characterized in that consisting of; sealing member 60 for preventing leakage of the contact portion of both pipes (P, P ') that is located inside the annular case 10 tightened by the fastening means (50) . The method of claim 1, The first and second tensile portions 20 and 30 are formed to have the same length as the longitudinal direction of the annular case 10, and each end of the first and second tension portions 20 and 30 has a semicircular shape. Is formed, the other end pipe coupling, characterized in that formed with the same curvature as the outer peripheral surface of the annular case (10). The method according to claim 1 or 2, First and second tension units 20 and 30 to prevent the first and second tension units 20 and 30 from bending when the first and second tension units 20 and 30 are tightened by the fastening means 50. Pipe coupling, characterized in that the reinforcement (24, 34) is formed at a predetermined interval on the inner circumference of the). The method of claim 3, wherein The reinforcing bar (24, 34) is formed in the form of any one of a triangular shape or a semi-circular projection around the fastening holes (22, 32) of the first, second tension portion (20, 30). Pipe coupling. The method of claim 1, A pipe coupling, characterized in that one end of the washer (56) is formed in the shape of a semicircle having the same shape as the inner surface of the second tension portion (30).

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