CN211951818U

CN211951818U - Quick connecting joint

Info

Publication number: CN211951818U
Application number: CN201922399520.5U
Authority: CN
Inventors: 张辉明; 王杏娟
Original assignee: Linhai Yongsheng Auto Technology Co ltd
Current assignee: Linhai Yongsheng Auto Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-11-17
Anticipated expiration: 2029-12-27

Abstract

The utility model belongs to the technical field of auto-parts technique and specifically relates to a quick connect joint. This quick connect coupling includes: insert tube, receiving terminal, elastomer, sealing washer, the insert tube inserts in the receiving terminal, just the insert tube with the receiving terminal passes through the elastomer the sealed connection of dismantling of sealing washer, the insert tube includes sealing connector, the receiving terminal is including the portion of holding that is used for the inserted part insert tube, and this sealing connector upper end has straight body section, and this portion of holding internal surface is equipped with spacing arch, the sealing washer with spacing protruding cooperation cover is established outside straight body section, the cross-section of sealing washer is "D" shape structure, its orthoscopic extrusion the inner wall of portion of holding, the arcwall extrusion the surface of straight body section, the sealing washer receives the extrusion force that the time variant of medium pressure increased the inner wall of portion of holding and the surface of straight body section to it is sealed effectual.

Description

Quick connecting joint

Technical Field

The utility model belongs to the technical field of auto-parts technique and specifically relates to a quick connect joint.

Background

A pipeline is a device for conveying fluids such as gas, liquid and the like, and is generally formed by connecting pipes, pipe connectors, valves and the like; in the prior art, in order to facilitate the arrangement and installation of pipes, a conduit joint is usually adopted for completion, the existing joint connection mode comprises threaded connection, welding, clamping and the like, and in the actual operation and installation, problems such as inconvenient installation, difficult assembly and disassembly, slow installation speed and the like exist, and in order to solve the problem, a quick joint is produced.

Please refer to fig. 1, chinese utility model patent with publication number CN201787244U discloses a pipeline quick-operation joint, belongs to the joint field, including the casing, its characterized in that sets gradually sealing washer one, interior retaining ring, sealing washer two, outer retaining ring in the casing cavity from the top down, constitutes a sealing system, and the casing lower part sets up the through-hole, sets up in the through-hole and pulls out the fastener, pulls out the fastener and comprises buckle button, buckle area, buckle fastener, and this pipeline joint has advantages such as easy dismounting, the leakproofness is good, long service life. However, the section of the sealing ring of the pipeline quick connector is circular, the sealing ring is in linear contact sealing during sealing, and when deformation is generated by medium pressure in some occasions, gaps are easy to leak, and the sealing is unstable; and the specification of the pipeline quick joint with the structure is single.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, connect convenient quick connect joint, the inner wall of the straight line face extrusion portion of holding of sealing washer, the surface of straight body section is extruded to the arcwall face, and the sealing washer receives the extrusion force of the inner wall of the deformation increase to the portion of holding and the surface of straight body section when medium pressure to it is sealed effectual, and connect and can make up the use.

For reaching the above advantage, the utility model provides a quick connect coupling, include: insert tube, receiving terminal, elastomer, sealing washer, the insert tube inserts in the receiving terminal, just the insert tube with the receiving terminal passes through the elastomer the sealed connection of dismantling of sealing washer, the insert tube includes sealing connector, the receiving terminal is including the portion of holding that is used for the inserted part insert tube, and this sealing connector upper end has straight body section, and this portion of holding internal surface is equipped with spacing arch, the sealing washer with spacing protruding cooperation cover is established outside straight body section, the cross-section of sealing washer is "D" shape structure, and its orthoscopic extrusion the inner wall of portion of holding, the arcwall face extrusion the surface of straight body section.

The utility model discloses an in an embodiment of quick connect coupling, the insert tube is still including being located the locking cooperation portion of sealing connector below, the sealing connector lower extreme has the increase section, and the radial dimension of increase section is greater than the radial dimension of locking cooperation portion, form between locking cooperation portion and the increase section and articulate the step face.

In an embodiment of the quick connect coupling of the present invention, the upper and lower ends of the outer surface of the accommodating portion are respectively provided with an upper protruding stage and a lower protruding stage, and the upper protruding stage and the lower protruding stage are used for limiting the axial movement of the elastic body.

The utility model discloses an in an embodiment of quick connect coupling, the inner wall symmetry of elastomer is provided with joint portion, hold the side wall be provided with joint portion complex joint cooperation portion, the elastomer cover is established outside the holding portion, and through the cooperation of joint portion and joint cooperation portion with the holding portion is connected fixedly.

The utility model discloses an in the embodiment of quick connect coupling, joint portion is for articulating the boss, joint cooperation portion be with articulate the boss cooperation and allow its male logical groove that articulates.

In an embodiment of the quick connector according to the present invention, the insertion tube is partially inserted into the receiving portion, and the hooking step surface is abutted against the upper surface of the hooking boss passing through the hooking groove to fix the insertion tube to the receiving end.

In an embodiment of the quick connect coupling of the present invention, the cross-section of the hooking boss is gradually reduced downward.

In an embodiment of the present invention, the peripheral wall of the elastic body is provided with an open groove, and an upper end of the open groove is of a tapered structure.

In an embodiment of the quick connect coupling of the present invention, the cross-section of the enlarged section increases gradually towards the locking engagement.

In an embodiment of the quick connect coupling of the present invention, the locking engagement portion is fixed below and received in the receiving portion, and the engagement increasing portion is engaged with the lower end of the receiving portion.

The utility model discloses in, the sealing washer cross-section is D shape structure, and the straight line face of sealing washer extrudes the inner wall of holding portion, and the surface of straight section is extruded to the arcwall face, and the deformation increases the extrusion force to the inner wall of holding portion and the surface of straight section when the sealing washer receives medium pressure to it is sealed effectual, and the sealing washer of this structure receives the extrusion the deflection big, laborsaving when inserting the insert tube.

The utility model discloses an in the embodiment, the portion of holding is provided with spacing arch, and spacing arch keeps the sealing washer cover to establish outside straight body section, still can lean on the lower terminal surface that leans on the sealing washer simultaneously, makes the sealing washer produce the deformation receiving inside medium pressure.

The utility model discloses in, when inserting the joint cooperation portion of holding portion with the joint portion of elastomer in, the step face that articulates of insert tube can articulate simultaneously fixedly, can prevent effectively that medium pressure and external shock from leading to breaking away from of insert tube and receiving terminal to the emergence of leakage phenomenon when preventing the medium from carrying, the practicality is strong, and quick connect joint structure is simple, sets up rationally, cost of manufacture low grade advantage.

The utility model discloses in, insert tube and receiving terminal can make the quick connect coupling specification diversified with different forms built-up connection, use more in a flexible way, and application range is wider.

Drawings

Fig. 1 is a schematic structural diagram of a pipeline quick coupling in the prior art.

Fig. 2 is a schematic structural view of a quick connect coupling according to a first embodiment of the present invention.

Fig. 3 is an exploded view of the quick connect coupling of fig. 2.

FIG. 4 is a cross-sectional view of the quick connect coupling of FIG. 2.

Fig. 5 is a cross-sectional view of the other side of the quick connect coupling of fig. 2.

FIG. 6 is a schematic view of the elastomeric body of the quick connect coupling of FIG. 3.

FIG. 7 is a schematic view of the elastomer of the quick connect coupling of FIG. 3 from another perspective.

FIG. 8 is a schematic view of the seal ring of the quick connect coupling of FIG. 3.

FIG. 9 is a cross-sectional view of the sealing ring of the quick connect coupling of FIG. 8.

Fig. 10 is a schematic view of the structure of the insertion guide of the quick connect coupling of fig. 2 abutting the end surface of the groove.

Fig. 11 is a schematic structural view of a quick connect coupling according to a second embodiment of the present invention.

Fig. 12 is a schematic structural view of a quick connect coupling according to a third embodiment of the present invention.

Fig. 13 is another schematic structural view of a quick connect coupling according to a third embodiment of the present invention.

Fig. 14 is a schematic structural view of a quick connect coupling according to a fourth embodiment of the present invention.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 2-5, the quick connect coupling of the first embodiment of the present invention comprises: insertion tube 1, receiving end 2, elastomer 3, sealing washer 4. The inserting tube 1 is inserted into the receiving end 2, and the inserting tube 1 and the receiving end 2 are hermetically and detachably connected through the elastic body 3 and the sealing ring 4. The sealing ring 4 is located in the gap between the insertion tube 1 and the receiving end 2.

The insertion tube 1 is a hollow tube. The insertion tube 1 comprises a sealing connector 11, a locking matching part 12, an insertion guide part 13 and a limiting convex ring 14, wherein the limiting convex ring 14 is positioned in the middle of the insertion tube 1, the insertion guide part 13 is fixed at the end part facing the receiving end 2, the sealing connector 11 is positioned between the insertion guide part 13 and the limiting convex ring 14, and the locking matching part 12 is positioned between the sealing connector 11 and the limiting convex ring 14. In the embodiment, the sealing connector 11, the locking matching part 12 and the insertion guide part 13 are respectively and symmetrically arranged along the central axis of the limit convex ring 14 to form a double-connector insertion pipe.

The sealing connector 11 has a straight section 111 at the upper end and an enlarged section 112 at the lower end. The straight section 111 is used for sleeving the sealing ring 4. The cross section of the enlarged section 112 is gradually increased from the connection with the straight section 111 toward the lock fitting portion 12.

The locking engagement 12 is located below the sealing joint 11. The radial dimension of the locking engagement portion 12 is smaller than the radial dimension of the enlarged section 112, and a hanging step surface 112a is formed between the locking engagement portion 12 and the enlarged section 112. An engagement increasing part 121 which is accommodated in the accommodating part 21 and engaged with the lower end of the accommodating part 21 is fixed below the lock engaging part 12. The enlarged portion 121 has a guide surface 121a to facilitate insertion.

The largest dimension of the mating enlarged portion 121, the enlarged section 112, is equal to the inner diameter of the receptacle 21. The largest dimension of the mating enlarged portion 121, the enlarged section 112, may also be less than the inner diameter of the receptacle 21, but no more than 15 filaments. That is, the maximum dimension of the fitting enlarged portion 121 and the enlarged section 112 is smaller than the inner diameter of the accommodating portion 21 by no more than 15 wires. The enlarged section 112 is matched with the upper end of the accommodating part 21, and the matched enlarged part 121 is matched with the lower end of the accommodating part 21, so that the lateral over-position stress of the insertion pipe 1 and the receiving end 2 is prevented, and the integral lateral stress capability of the quick connection joint is improved.

The insertion guide portion 13 is for gradually reducing the outer diameter of the insertion tube 1. The insertion guide 13 may facilitate insertion of the insertion tube 1 into the receiving end 2. The insertion guide 13 is fixed at the end of the straight section 111 facing the receiving end 2. The cross section of the insertion guide portion 13 is a circular ring with a sector-shaped cross section. Meanwhile, the sealing joint 11 is convenient to be sleeved with the sealing ring 4.

The stop collars 14 are used to limit the relative positions of the two ends of the insertion tube 1 when the two ends are respectively connected with the receiving end 2, and serve as a reference for the insertion tube 1 to be inserted into the receiving end 2 and mounted in place. The limit protruding ring 14 may not be provided in other embodiments of the present invention.

The receiving end 2 comprises a receiving portion 21 for inserting a part of the insertion tube 1, a hose connecting portion 22 for connecting a hose. The accommodating portion 21 communicates with the inside of the hose connecting portion 22.

The inner surface of the accommodating part 21 is provided with a limit protrusion 211, and the lower end surface of the sealing ring 4 abuts against the limit protrusion 211 to enable the sealing ring 4 to be sleeved outside the straight section 111. The upper and lower ends of the outer surface of the accommodating portion 21 are respectively provided with an upper protruding step 212 and a lower protruding step 213, and the upper protruding step 212 and the lower protruding step 213 are used for limiting the axial movement of the elastic body 3.

Referring to fig. 3 and 6-7, the inner wall of the elastic body 3 is symmetrically provided with the clamping portions 31, the side wall of the accommodating portion 21 is provided with the clamping matching portions 214 matching with the clamping portions 31, and the elastic body 3 is sleeved outside the accommodating portion 21 and is connected and fixed with the accommodating portion 21 through the matching of the clamping portions 31 and the clamping matching portions 214. The peripheral wall of the elastic body 3 is provided with an open groove 32, and the upper end of the open groove 32 is of a conical structure, so that the inner surface of the elastic body 3 can be conveniently widened, and the elastic body 3 can be conveniently detached.

Further, the clamping portion 31 is a hooking boss, and the clamping fitting portion 214 is a hooking through groove which is fitted with the hooking boss to allow the insertion of the hooking boss. The inner surface of the accommodating portion 21 locks a gap between the outer surfaces of the mating portions 12 to form an accommodating portion catching portion 31. When the insertion tube 1 is partially inserted into the receiving portion 21, the hooking step surface 112a abuts against the upper surface of the hooking boss passing through the hooking through groove to fixedly connect the insertion tube 1 with the receiving end 2. Furthermore, the section of the hanging lug boss is gradually reduced downwards.

Referring to fig. 10, the upper end surface of the inner surface of the accommodating portion 21 is provided with a groove 215 having a radial dimension larger than the outer diameter of the straight section 111. Providing the groove 215 can reduce the accuracy of the position setting of the hook-on groove and the accuracy of the length of the straight section 111. The through groove is hung after the groove 215 is formed, the upward deviation of the current position can be within a certain range, the through groove is hung, the upward deviation of the through groove can be within the same distance, the inserting pipe 1 can also be shifted upwards, the increasing section 112 of the sealing connector 11 is matched with the sealing ring 4, and the sealing effect between the inserting pipe 1 and the receiving end 2 is improved.

The hose connecting portion 22 is of a tube-in-tube structure, a sealing protrusion 221 is fixed outside the hose connecting portion 22, and the sealing protrusion 221 is used for increasing the pressure between the receiving end 2 and the hose when the hose connecting portion 22 is connected with the hose, so as to seal the receiving end 2 and the hose. The sealing protrusion 221 has a ring-shaped structure, and in order to facilitate insertion of the hose, the diameter of the sealing protrusion 115 facing the hose is smaller than the diameter of the sealing protrusion 221 facing away from the hose. In other embodiments of the present invention, the number of the sealing protrusions 221 may be plural.

Referring to fig. 8-9, the cross-section of the sealing ring 4 is a "D" shape, the linear surface 41 presses against the inner wall of the receiving portion 21, and the arc surface 42 presses against the outer surface of the straight section 111.

The working principle of the quick connecting joint is as follows: when the clamping portion 31 of the elastic body 3 is inserted into the clamping matching portion 214 of the accommodating portion 21, the hooking step surface 112a of the insertion tube 1 can be hooked and fixed at the same time, so that the sealing ring 4 is positioned in the gap between the insertion tube 1 and the receiving end 2, the limiting protrusion 211 enables the sealing ring 4 to be sleeved outside the straight section 111, and the inner surface of the sealing ring 4 is arc-shaped, so that linear sealing is formed with the straight section 111, and the problem that the insertion tube 1 and the receiving end 2 are separated or have gaps due to internal medium pressure or external impact can be effectively prevented; further, when one or both of the insertion tube 1 and the receiving end 2 are damaged by external impact, the open groove 32 of the elastic body 3 is pressed to widen the diameter of the inner surface of the elastic body 3, thereby releasing the hooking of the catching portion 31, and thus the insertion tube 1 and the receiving end 2 can be easily replaced. Non-professional persons can easily perform replacement and installation combination; the upper ends of the elastic body 3, in which the open grooves 32 are formed, are tapered, so that the inner surface of the elastic body 3 can be widened by a small external force, thereby effectively preventing the elastic body 3 from being damaged by an excessive external force.

Because the limit bulge 211 of the receiving end 2 limits the movement of the sealing ring 4 away from the insertion direction of the insertion tube, the internal medium pressure extrudes the upper end of the sealing ring 4 through the groove 215 to enable the upper end to deform, so that the extrusion force on the inner walls of the straight section 111 and the accommodating part 21 is increased, and the sealing effect is improved.

Of course, the utility model discloses a receiving terminal 2 also can not set up spacing arch 211, and sealing washer 4 receives inside medium pressure to move down, and increase section 112's inclined plane further makes sealing washer 4 compress when reacing increase section 112 department, increases sealed effect.

Referring to fig. 11, in the quick connector according to the second embodiment of the present invention, an included angle a between the accommodating portion 21 of the receiving end 2 and the hose connecting portion 22 is 90 °. A limiting protrusion 223 is fixed on the outside of the hose connecting portion 22, and the limiting protrusion 223 is used for limiting the relative position of the receiving end 2 and the hose when the receiving end is connected with the hose, and is used as a reference for installing the hose in place.

Referring to fig. 12-13, in the quick connector according to the third embodiment of the present invention, the quick connector is a three-way connector, the receiving end 2 is provided with two symmetrical hose connecting portions 22, the accommodating portion 21 is located in the middle of the two hose connecting portions 22, and the included angle B between the accommodating portion 21 and the hose connecting portions 22 is 90 °. Or, the end of the insert tube 1 departing from the sealing connector 11 is connected to the middle of the tube body with the hose connecting part 22 at both ends, and the included angle C between the insert tube 1 and the tube body is 90 °.

Referring to fig. 14, in the quick connector according to the fourth embodiment of the present invention, a tube body having a receiving portion 21 is connected to a middle portion of an insert tube 1, and an included angle E between the insert tube 1 and the tube body is 30 °.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. A quick connect coupling comprising: insert tube (1), receiving terminal (2), elastomer (3), sealing washer (4), insert tube (1) insert in receiving terminal (2), just insert tube (1) with receiving terminal (2) pass through elastomer (3), the sealed dismantlement of sealing washer (4) is connected, its characterized in that, insert tube (1) is including sealing joint head (11), receiving terminal (2) are including holding portion (21) that is used for inserting part insert tube (1), and this sealing joint head (11) upper end has straight body section (111), and this holding portion (21) internal surface is equipped with spacing arch (211), sealing washer (4) with spacing arch (211) cooperation cover is established outside straight body section (111), the cross-section of sealing washer (4) is "D" shape structure, and its straight line face (41) extrusion the inner wall of holding portion (21), the curved surface (42) presses against the outer surface of the straight section (111).

2. The quick connect coupling according to claim 1, wherein the insert tube (1) further comprises a locking engagement portion (12) located below the sealing connection head (11), the sealing connection head (11) has an enlarged section (112) at a lower end thereof, the enlarged section (112) has a radial dimension larger than that of the locking engagement portion (12), and a hooking step surface (112a) is formed between the locking engagement portion (12) and the enlarged section (112).

3. The quick connect coupling according to claim 2, wherein the upper and lower ends of the outer surface of said receiving portion (21) are provided with an upper protruding step (212), a lower protruding step (213), respectively, said upper protruding step (212) and said lower protruding step (213) being for restricting the axial movement of said elastic body (3).

4. The quick connect coupling of claim 3, characterized in that, the inner wall symmetry of elastomer (3) is provided with joint portion (31), accommodate portion (21) lateral wall be provided with joint portion (31) complex joint cooperation portion (214), elastomer (3) cover is established outside accommodate portion (21), and through joint portion (31) and joint cooperation portion (214) the cooperation with accommodate portion (21) are connected fixedly.

5. The quick connect coupling of claim 4, wherein said snap-fit portion (31) is a hooking boss and said snap-fit portion (214) is a hooking channel that cooperates with said hooking boss to allow insertion thereof.

6. The quick connect coupling according to claim 5, characterized in that, when the insert tube (1) is partially inserted into the receiving portion (21), the hooking step surface (112a) secures the insert tube (1) in connection with the receiving end (2) against an upper surface of a hooking boss passing through the hooking through groove.

7. The quick connect coupling of claim 6, wherein said hooking boss has a downwardly tapering cross-section.

8. The quick connect coupling of claim 4, wherein the elastomer (3) has an open groove (32) formed in a peripheral wall thereof, and an upper end of the open groove (32) has a tapered configuration.

9. The quick connect coupling of claim 2, wherein the cross-section of the enlarged section (112) increases gradually towards the lock engagement portion (12).

10. The quick connect coupling according to claim 2, wherein a mating enlarged portion (121) received in the receiving portion (21) and mated with a lower end of the receiving portion (21) is fixed below the lock mating portion (12).