CN210566881U

CN210566881U - Self-locking pipe connector

Info

Publication number: CN210566881U
Application number: CN201920749670.1U
Authority: CN
Inventors: 刘俊荣
Original assignee: Guangdong Yaolong Metal Technology Co ltd
Current assignee: Guangdong Yaolong Metal Technology Co ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-05-19
Anticipated expiration: 2029-05-23

Abstract

The utility model relates to a from locking-type union coupling spare, include: a pipe body having a socket into which a pipe fitting is inserted; the self-locking ring comprises a ring body and a plurality of elastic teeth, the ring body is installed on the inner peripheral wall of the pipe body, the elastic teeth are arranged on the inner peripheral edge of the ring body, a through hole for the pipe fitting to pass through is formed in a surrounding mode through the elastic teeth, the elastic teeth are triangular teeth, tooth tips of the elastic teeth face towards the central shaft of the ring body, and the elastic teeth are bent towards one side, far away from the inserting opening, of the ring body relative to the ring body. The utility model discloses a can simplify the installation of pipe fitting from locking-type union coupling, promote the installation convenience and the installation reliability of pipe fitting.

Description

Self-locking pipe connector

Technical Field

The utility model relates to a union coupling technical field especially relates to a from locking-type union coupling spare.

Background

In daily life, the installation of pipe fittings such as water pipes, air pipes and oil pipes often requires the installation through pipe connectors. The traditional pipe fitting installation mostly adopts clamping and pressing type connection, the pipe fitting is inserted into a pipe connecting piece and then is clamped, pressed and deformed by a clamping and pressing tool to realize fixation, the operation process is complicated, and the clamping and pressing tool is required to be taken during installation, so that the installation of the pipe fitting is very inconvenient; in other pipe connection techniques, it is necessary to perform machining such as flanging, threading or ring expanding on the pipe in advance, and to install the pipe in cooperation with a special pipe connector, which also makes the installation of the pipe very inconvenient.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a self-locking pipe connector to solve the problem of inconvenience in installation of the conventional pipe fitting, so that the installation process of the pipe fitting can be simplified, and the installation convenience and the installation reliability of the pipe fitting can be improved.

A self-locking pipe coupling, comprising:

a pipe body having a socket into which a pipe fitting is inserted; and

the self-locking ring comprises a ring body and a plurality of elastic teeth, wherein the ring body is installed on the inner peripheral wall of the pipe body, the elastic teeth are arranged on the inner peripheral edge of the ring body, a through hole for the pipe fitting to pass through is formed in a surrounding mode through the elastic teeth, the elastic teeth are triangular teeth, tooth tips of the elastic teeth face towards the central shaft of the ring body, and the elastic teeth are bent relative to one side, far away from the inserting opening, of the ring body.

The self-locking pipe connecting piece can simplify the installation process of the pipe fitting and improve the installation convenience and the installation reliability of the pipe fitting. Specifically, when the pipe fitting is installed, the pipe fitting is inserted into the pipe body from the socket, the pipe fitting is inserted into the self-locking ring through the through hole, the elastic teeth of the self-locking ring are abutted to the outer peripheral wall of the pipe fitting, the elastic teeth are bent towards one side far away from the socket to form self-locking on the pipe fitting, meanwhile, the elastic teeth are arranged in a triangular shape, pressing force generated by the tooth tip on the pipe fitting is large, and reliability of self-locking of the pipe fitting can be effectively guaranteed. Adopt the utility model discloses a carry out the pipe fitting from locking-type union coupling spare, need not to borrow external instrument, need not to carry out the pre-processing to the pipe fitting, alright realize the formula auto-lock that cut straightly of pipe fitting for the installation of pipe fitting is very convenient, can effectively promote the installation effectiveness of pipe fitting, reduce cost.

in one embodiment, the pipe fitting is a stainless steel pipe fitting, the bending angle of the elastic teeth relative to the ring body is alpha, wherein alpha is more than or equal to 8 degrees and less than or equal to 35 degrees.

In one embodiment, the inner circumferential wall of the pipe body is provided with a first annular groove, the self-locking ring is arranged in the first annular groove, and the self-locking ring is loosely matched with the pipe body.

In one embodiment, one end of the pipe body close to the socket is arranged in a flaring manner, and the first annular groove is arranged on the inner peripheral wall of the flaring end of the pipe body.

In one embodiment, the self-locking pipe connector further comprises a sealing ring, the inner circumferential wall of the pipe body is provided with a second annular groove, and the sealing ring is arranged in the second annular groove.

In one embodiment, the inner circumferential wall of the pipe body is formed with a limit step for abutting and matching with the end surface of the pipe fitting.

In one embodiment, the tube body has a plurality of said sockets, and the tube body is provided with a said self-locking ring adjacent to the inner peripheral wall of any of said sockets.

In one embodiment, the self-locking pipe connector further comprises a movable barrel movable along the pipe member and inserted between the resilient teeth and the pipe member to space the resilient teeth from the pipe member.

In one embodiment, the outer peripheral wall of the movable cylinder at an end thereof adjacent to the insertion opening is formed with a tapered guide surface.

In one embodiment, the peripheral wall of the end of the movable barrel remote from the socket is provided with an annular flange.

Drawings

Fig. 1 is a schematic structural view of a self-locking pipe connector according to an embodiment of the present invention;

FIG. 2 is an exploded view of the self-locking pipe coupling of FIG. 1;

FIG. 3 is a cross-sectional schematic view of a self-locking pipe coupling;

FIG. 4 is a cross-sectional schematic view of the tube body of the self-locking tube connector;

FIG. 5 is a top view of the self-locking ring of the self-locking pipe coupling;

FIG. 6 is a cross-sectional view of the self-locking collar of FIG. 5;

FIG. 7 is a schematic diagram of the inclination angle of the elastic teeth relative to the ring body;

FIG. 8 is a schematic view of an assembly structure of the self-locking pipe connector and the pipe fitting;

fig. 9 is a schematic sectional view showing an assembling structure of the self-locking type pipe connecting member and the pipe fitting.

10. The self-locking pipe connecting piece comprises a self-locking pipe connecting piece 11, a pipe body 111, a socket 112, a first annular groove 113, a second annular groove 114, a limiting step 12, a self-locking ring 121, a ring body 122, elastic teeth 123, a through hole 13, a sealing ring 14, a movable cylinder 141, a conical guide surface 142, an annular flange 20 and a pipe fitting.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In the present invention, the terms "first" and "second" do not denote any particular quantity or order, but are merely used to distinguish names.

Referring to fig. 1 to 3, a self-locking pipe connector 10 includes a pipe body 11 and a self-locking ring 12. Wherein the pipe body 11 has a socket 111 into which the pipe member 20 is inserted. Referring to fig. 5 and 6, the self-locking ring 12 includes a ring body 121 mounted on the inner peripheral wall of the pipe body 11, and a plurality of elastic teeth 122 disposed on the inner peripheral edge of the ring body 121, the plurality of elastic teeth 122 surround to form a through hole 123 for the pipe 20 to pass through, the elastic teeth 122 are triangular teeth, the tooth tips of the elastic teeth 122 face the central axis of the ring body 121, and the elastic teeth 122 are bent toward the side away from the insertion opening 111 relative to the ring body 121.

The self-locking pipe connector 10 can be applied to the installation of thin-wall pipe fittings 20, and is particularly suitable for the installation of thin-wall stainless steel pipe fittings 20. The pipe body 11 has a hollow tubular structure, and may be provided in a straight pipe shape or a bent pipe shape as necessary. The self-locking ring 12 may be made of sheet metal, and the elastic teeth 122 are integrally formed by bending with respect to the ring body 121. The bending angle of the elastic teeth 122 with respect to the ring body 121 may be set according to the friction angle between the elastic teeth 122 and the pipe member 20. As shown in fig. 9, after the pipe 20 is inserted into the self-locking ring 12, the pipe 20 is pressed by the elastic teeth 122, sliding friction is formed between the elastic teeth 122 and the pipe 20, and when an external force is applied to pull out the pipe 20, because the acting line of the resultant force of the external force is within the friction angle, no matter how much external force is applied, a balance force opposite to the external force is generated, so that the pipe 20 is kept static, thereby realizing self-locking of the pipe 20, and the contact area of the tooth tips of the elastic teeth 122 is smaller, the pressure is larger, so that the self-locking of the pipe 20 is more reliable.

The self-locking pipe connector 10 can simplify the installation process of the pipe 20 and improve the installation convenience and the installation reliability of the pipe 20. Specifically, when the pipe fitting 20 is installed, the pipe fitting 20 is inserted into the pipe body 11 from the insertion opening 111, the pipe fitting 20 is inserted into the self-locking ring 12 through the through hole 123, the elastic teeth 122 of the self-locking ring 12 are abutted to the outer peripheral wall of the pipe fitting 20, the elastic teeth 122 are bent towards the side away from the insertion opening 111 to form self-locking on the pipe fitting 20, meanwhile, the elastic teeth 122 are arranged in a triangular shape, pressing force generated by the tooth tips on the pipe fitting 20 is large, and reliability of self-locking of the pipe fitting 20 can be effectively guaranteed. Adopt the utility model discloses a carry out the installation of pipe fitting 20 from locking-type union coupling 10, need not to borrow external instrument, need not to carry out the pre-processing to pipe fitting 20, alright realize the formula auto-lock that cut straightly of pipe fitting 20 for pipe fitting 20's installation is very convenient, can effectively promote pipe fitting 20's installation effectiveness, reduces pipe fitting 20's manufacturing cost.

in one embodiment, as shown in fig. 7, the pipe 20 is a stainless steel pipe, the bending angle of the elastic teeth 122 relative to the ring body 121 is α, wherein α is greater than or equal to 8 ° and less than or equal to 35 °, and a larger pressing force can be generated due to the triangular design of the elastic teeth 122, so that the elastic teeth 122 can be self-locked by bending at a smaller angle, which can reduce the difficulty of manufacturing the self-locking ring 12.

Further, referring to fig. 3 and 4, the inner peripheral wall of the pipe body 11 is provided with a first annular groove 112, the self-locking ring 12 is disposed in the first annular groove 112, and the self-locking ring 12 is loosely fitted with the pipe body 11. The self-locking ring 12 is in a free state in the first annular groove 112 and can only receive the axial force of the pipe 20, so that when the pipe 20 is subjected to an external force deviating from the axial direction to generate vibration or rotation, the self-locking ring 12 can move together with the pipe 20 relative to the pipe body 11, and the self-locking ring 12 and the pipe 20 are always kept in a locking state, so that self-locking failure of the pipe 20 under the conditions of vibration or rotation and the like can be avoided.

Optionally, one end of the pipe body 11 close to the socket 111 is provided with a flaring, and the first annular groove 112 is provided on the inner peripheral wall of the flaring end of the pipe body 11. Specifically, the inner peripheral wall of the pipe body 11 near one end of the insertion opening 111 is provided with a flaring formed in a conical surface, so that the pipe 20 can be accurately and quickly inserted into the pipe body 11. The first annular groove 112 can be integrally formed at the flared end of the pipe body 11 by flanging and extruding, and the manufacturing process is simplified.

Further, the self-locking pipe connector 10 further includes a sealing ring 13, the inner peripheral wall of the pipe body 11 is provided with a second annular groove 113, and the sealing ring 13 is disposed in the second annular groove 113. When the pipe 20 is inserted into the pipe body 11, the outer circumferential surface of the pipe 20 presses the seal ring 13, and the seal ring 13 is deformed, so that the pipe 20 and the pipe body 11 can be connected in a sealing manner. Meanwhile, since the sealing ring 13 is usually made of an elastic material such as rubber or silicone, the sealing ring 13 generates an opposite pressing force on the pipe 20 after being pressed, so that the installation stability of the pipe 20 can be further improved. Optionally, the number of the sealing rings 13 is multiple, so that the sealing performance and the locking effect can be further improved.

Further, as shown in fig. 4, the inner peripheral wall of the pipe body 11 is formed with a stopper step 114 for abutting engagement with the end surface of the pipe member 20. After the pipe fitting 20 is inserted into the preset depth, the end surface of the pipe fitting 20 is in butt fit with the limit step 114, so that the movement of the pipe fitting 20 can be limited, and the installation accuracy of the pipe fitting 20 is ensured.

Further, the pipe body 11 has a plurality of insertion holes 111, and the inner peripheral wall of the pipe body 11 near any one of the insertion holes 111 is provided with a self-locking ring 12. Specifically, in the present embodiment, as shown in fig. 4, the pipe body 11 is a straight pipe with two ends penetrating, and two ends of the pipe body 11 are respectively formed with a socket 111, so that the self-locking pipe connector 10 can simultaneously connect two pipe fittings 20. Of course, the pipe body 11 may be provided as a tee or a cross, etc., as necessary to facilitate the simultaneous connection of more pipes 20.

In addition, when the pipe member 20 needs to be replaced, the pipe member 20 needs to be pulled out from the pipe body 11, and in order to facilitate the pulling out of the pipe member 20, further, the self-locking pipe connector 10 further includes a movable cylinder 14, and the movable cylinder 14 is movable along the pipe member 20 and inserted between the elastic teeth 122 and the pipe member 20 to separate the elastic teeth 122 from the pipe member 20. Specifically, as shown in fig. 8, the movable cylinder 14 is a thin-walled cylindrical structure with two through ends, the movable cylinder 14 and the pipe body 11 are separately arranged, the movable cylinder 14 is movably sleeved on the periphery of the pipe 20, when the pipe 20 needs to be pulled out, the movable cylinder 14 can be moved along the pipe 20, so that the movable cylinder 14 is inserted between the elastic teeth 122 and the pipe 20, the elastic teeth 122 and the pipe 20 are separated to release the self-locking state, and then a certain pulling force is applied to pull out the pipe 20, so that the operation is simple and convenient.

Referring to fig. 9, preferably, the outer peripheral wall of the movable cylinder 14 at an end close to the socket 111 is formed with a tapered guide surface 141. The tapered guide surface 141 can guide the insertion of the movable cylinder 14, and at the same time, the wall thickness of the end of the movable cylinder 14 is thinner, so that the movable cylinder can be inserted into the gap between the elastic teeth 122 and the pipe 20 more easily, and the pipe 20 can be pulled out more easily.

Further, the outer peripheral wall of the end of the movable barrel 14 remote from the socket 111 is provided with an annular flange 142. Through setting up annular flange 142, can provide a landing force platform for external force, through exerting axial thrust to annular flange 142, alright make movable cylinder 14 along pipe fitting 20 motion, easy operation is convenient.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A self-locking pipe coupling, comprising:

a pipe body having a socket into which a pipe fitting is inserted; and

2. the self-locking pipe connector of claim 1, wherein the pipe is a stainless steel pipe, and the bending angle of the elastic teeth with respect to the ring body is α, wherein α is greater than or equal to 8 ° and less than or equal to 35 °.

3. The self-locking pipe connector of claim 1 wherein the inner peripheral wall of the pipe body is provided with a first annular groove, the self-locking ring is disposed in the first annular groove, and the self-locking ring is loosely fitted with the pipe body.

4. The self-locking pipe connector as recited in claim 3, wherein the end of the pipe body near the socket is flared, and the first annular groove is formed in an inner circumferential wall of the flared end of the pipe body.

5. The self-locking pipe connector according to claim 1, further comprising a sealing ring, wherein the inner peripheral wall of the pipe body is provided with a second annular groove, and the sealing ring is disposed in the second annular groove.

6. The self-locking pipe connector according to claim 1, wherein the inner circumferential wall of the pipe body is formed with a limit step for abutting engagement with the end surface of the pipe member.

7. The self-locking pipe connector as recited in any one of claims 1 to 6 wherein the pipe body has a plurality of said sockets, and the inner peripheral wall of the pipe body adjacent to any one of said sockets is provided with a said self-locking ring.

8. The self-locking pipe connector according to any one of claims 1 to 6, further comprising a movable barrel movable along the pipe member and inserted between the elastic teeth and the pipe member to separate the elastic teeth from the pipe member.

9. The self-locking tube connector of claim 8 wherein the peripheral wall of the end of the movable barrel adjacent the socket is formed with a tapered guide surface.

10. The self-locking tube connector of claim 8 wherein the peripheral wall of the end of the movable barrel remote from the socket is provided with an annular flange.