CN114593295A

CN114593295A - Connecting joint

Info

Publication number: CN114593295A
Application number: CN202210236045.3A
Authority: CN
Inventors: 付杨; 冷凯; 陈燕迪; 雷森旺; 李锋
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-06-07

Abstract

The invention belongs to the technical field of automobile parts and discloses a connecting joint which comprises a male joint, a female joint and a sealing ring, wherein the male joint comprises a first pipe body, a first flange and a second flange, the female joint comprises a first pipe and a second pipe which are connected, the inner diameter of the first pipe is larger than that of the second pipe, a third flange is arranged on the outer wall of one end, away from the second pipe, of the first pipe, an elastic buckle is integrally formed on the first pipe, the first pipe is sleeved outside the first pipe, the elastic buckle passes through the second flange and is positioned between the second flange and the first flange, the free end of the elastic buckle is axially abutted against the second flange, and the sealing ring is clamped between the end face of the second pipe and the end face of the first pipe body. After the installation targets in place, the sealing washer keeps certain compression capacity, and elasticity buckle and second flange axial butt form axial "locking" structure, does not have installation clearance between two bodys, connects more firmly. The elastic buckle and the first pipe are of an integrated structure, the structure is simplified, and the processing and the assembling are more convenient.

Description

Connecting joint

Technical Field

The invention relates to the technical field of automobile parts, in particular to a connecting joint.

Background

Some functional valve bodies, such as air supply valves, check valves or heaters, are widely applied to air inlet pipelines. These functional valves or fittings, connected to the main conduit, are often required to have the following characteristics: non-detachability, capability of 'fast' insertion and air tightness. Generally, the connection is realized by matching a female joint with a male joint, the male joint with a simpler structure is mostly arranged on a main pipeline, and the female joint with a relatively complex structure is matched with the male joint to form the connection. In order to realize the functions of quick insertion, non-disassembly and sealing, the female joint is usually composed of more than two plastic parts and an additional sealing element, and has the disadvantages of complex structure, inconvenient manufacture and assembly, high cost and poor reliability. In addition, limited by the sealing mechanism in the prior art, a certain gap exists between the connecting shafts of the male joint and the female joint upwards, and comprehensive limiting cannot be realized.

Disclosure of Invention

The invention aims to provide a connecting joint which is simple in structure, convenient to manufacture and assemble, low in cost and high in connecting reliability, and a connecting shaft does not have a gap upwards, so that more reliable limiting is realized.

In order to realize the purpose, the following technical scheme is provided:

the utility model provides a connecting joint, includes male joint, female joint and sealing washer, the male joint include first body and axial interval set up in first flange and the second flange of the outer wall of first body, the female joint includes the second body, the second body is including continuous first pipe and second pipe, the internal diameter of first pipe is greater than the internal diameter of second pipe, the one end outer wall that the second pipe was kept away from to first pipe is provided with the third flange, integrated into one piece has elastic buckle on the first pipe, first pipe box locates outside the first pipe body, elastic buckle crosses the second flange, and is located between the second flange and the first flange, the free end of elastic buckle with second flange axial butt, the sealing washer clamp is in between the terminal surface of second pipe and the terminal surface of first body.

As an alternative of the connection joint of the present invention, the first tube is provided with an opening, the opening is communicated with the inner cavity of the first tube, and the elastic buckle is arranged on the inner wall of the opening.

As an alternative of the connection joint of the present invention, the opening is provided in plurality, the plurality of openings are provided at intervals in a circumferential direction of the first pipe, and an inner wall of each of the openings is provided with the elastic catch.

As an alternative of the connection joint of the present invention, a first limiting portion is provided on the first flange, a second limiting portion is provided on the third flange, and the first limiting portion and the second limiting portion cooperate to limit the first pipe and the first pipe body circumferentially.

As an alternative of the connection joint of the present invention, one of the first and second stopper portions includes a protrusion, and the other of the first and second stopper portions includes a catching groove, and the protrusion is caught in the catching groove.

As an alternative of the connection joint of the present invention, the first limit portion is provided in plurality, the first limit portions are provided in plurality at intervals along a circumferential direction of the first flange, and the second limit portion is provided in plurality correspondingly.

As an alternative to the joint of the present invention, an inner wall of the first pipe near one end of the second pipe abuts against the seal ring.

As an alternative of the joint of the present invention, the joint further includes a support pipe, the support pipe includes a first support pipe body and a second support pipe body connected to each other, the first support pipe body is disposed in the first pipe, and the second support pipe body extends into the first pipe body.

As an alternative to the joint of the present invention, an outer wall of a joint of the first support pipe body and the second support pipe body abuts against the seal ring.

As an alternative to the coupling joint of the present invention, the sealing ring is made of rubber.

The invention has the beneficial effects that:

in the connecting joint provided by the invention, when the male joint and the female joint are connected, the sealing ring is firstly put into the second pipe body; then, the first pipe is sleeved outside the first pipe body, the elastic buckle elastically deforms to pass through the second flange in the sleeving process, after the elastic buckle passes through the second flange, the elastic deformation of the elastic buckle is recovered and falls between the second flange and the first flange, and the free end of the elastic buckle is axially abutted against the second flange; meanwhile, the seal ring is extruded by the end face of the second pipe and the end face of the first pipe body to be elastically deformed, so that the joint of the first pipe body and the second pipe body is sealed. Required clearance of elasticity buckle installation is filled by the sealing washer, the sealing washer receives the extrusion and warp in the installation, the back of targetting in place in the installation, the sealing washer still keeps certain compressive capacity, elasticity buckle and second flange axial butt simultaneously to form an axial "locking" structure jointly, realize the axial fixity of first body and second body and connect, do not have the installation clearance between the two, realize more reliable spacing, it is more firm to connect, and the leakproofness is better. Elasticity buckle and first pipe are integrated into one piece's integral type structure, and the structure is simplified, and processing and assembly are more convenient, and are with low costs, and the intensity of integral type structure is high to make two pipelines, or the joint strength of pipeline and valve body higher, it is safer to use.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic illustration of a first conduit and a second conduit connected by a male fitting and a female fitting provided by an embodiment of the present invention;

FIG. 2 is a first exploded view of a connector according to an embodiment of the present invention;

FIG. 3 is a second exploded view of the connector according to the embodiment of the present invention;

FIG. 4 is a schematic view of a female fitting and a second conduit according to an embodiment of the present invention;

fig. 5 is a schematic view of the connection of the male and female fittings provided by the embodiment of the present invention.

Reference numerals:

100. a first pipeline; 200. a second pipeline;

1. a male connector; 2. a female joint; 3. a seal ring; 4. supporting a tube;

11. a first pipe body; 12. a first flange; 13. a second flange;

121. a first limiting part;

21. a first tube; 22. a second tube; 23. a third flange; 24. an elastic buckle;

211. an opening; 231. a second limiting part;

41. a first support tube; 42. the second supports the body.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a connecting joint which can be used for sealing connection between two pipelines or between a pipeline and a valve body. The pipeline may be two air inlet pipelines or two air outlet pipelines, and the valve body may be a functional valve such as an air compensating valve, a one-way valve or a heating valve, and is not limited herein. As shown in fig. 1 to 5, the connection fitting of the present embodiment includes a male fitting 1, a female fitting 2, and a seal ring 3. Two pipes to be connected are set as the first pipe 100 and the second pipe 200, respectively. One end of the male joint 1 is connected with the first pipeline 100, one end of the female joint 2 is connected with the second pipeline 200, and the other end of the male joint 1 and the other end of the female joint 2 are hermetically connected through the sealing ring 3, so that the two pipelines are hermetically connected.

Specifically, the male joint 1 includes a first pipe body 11, a first flange 12, and a second flange 13. The first flange 12 and the second flange 13 are both protruded on the outer wall of the first pipe 11, and both are axially spaced along the first pipe 11. The second flange 13 is located on the side of the first flange 12 remote from the first pipeline 100. The female coupler 2 includes a second pipe body including a first pipe 21 and a second pipe 22 connected, and the inner diameter of the first pipe 21 is larger than that of the second pipe 22. The outer wall of one end of the first pipe 21 far away from the second pipe 22 is provided with a third flange 23, and an elastic buckle 24 is integrally formed on the first pipe 21. The first pipe 21 is sleeved outside the first pipe body 11, the elastic buckle 24 passes over the second flange 13 and is located between the second flange 13 and the first flange 12, the free end of the elastic buckle 24 is axially abutted against the second flange 13, and the sealing ring 3 is clamped between the end surface of the second pipe 22 and the end surface of the first pipe body 11.

When the male joint 1 and the female joint 2 are connected, the sealing ring 3 is firstly placed in the second pipe body, the outer diameter of the sealing ring 3 is larger than the inner diameter of the second pipe 22 and not larger than the inner diameter of the first pipe 21, so that the sealing ring 3 can be placed in the first pipe 21 and is positioned on the end face of the second pipe 22; then, the first pipe 21 is sleeved outside the first pipe body 11, in the sleeving process, the elastic buckle 24 is elastically deformed to cross the second flange 13, when the elastic buckle 24 crosses the second flange 13, the elastic deformation of the elastic buckle 24 is recovered and falls between the second flange 13 and the first flange 12, and the free end of the elastic buckle 24 is axially abutted to the second flange 13; at the same time, the gasket 3 is elastically deformed by being pressed by the end surface of the second pipe 22 and the end surface of the first pipe body 11, and seals the joint between the first pipe body 11 and the second pipe body.

Required clearance of 24 installation processes of elasticity buckle is filled by sealing washer 3, sealing washer 3 receives the extrusion and warp in the installation, the installation back that targets in place, sealing washer 3 still keeps certain compression volume, elasticity buckle 24 and second flange 13 axial butt simultaneously, thereby form an axial "locking" structure, realize the axial fixity connection of first body 11 and second body, there is not the installation clearance between the two, realize more reliable spacing, it is more firm to connect, and the leakproofness is better. Elastic buckle 24 and first pipe 21 are integrated into one piece's integral type structure, and the structure is simplified, and processing and assembly are more convenient, and are with low costs, and the intensity of integral type structure is high to make two pipelines, or the joint strength of pipeline and valve body higher, it is safer to use.

Illustratively, the first tube 21 and the elastic buckle 24 are integrally injection molded, or the first tube 21, the second tube 22 and the elastic buckle 24 are integrally injection molded.

The sealing ring 3 is made of rubber, for example. The sealing ring 3 made of rubber has certain elasticity, so that elastic deformation is facilitated to ensure the sealing property of the joint of the first pipe body 11 and the second pipe body.

Optionally, an opening 211 is disposed on the first tube 21, the opening 211 communicates with an inner cavity of the first tube 21, and the elastic buckle 24 is disposed on an inner wall of the opening 211. Through setting up opening 211, set up elasticity buckle 24 in opening 211, realize the fretwork design for installer can range upon range of whether the installation of elasticity buckle 24 targets in place (whether elasticity buckle 24 moves between second flange 13 and first flange 12 promptly, and with second flange 13 butt), and the assembly reliability is high, and it is more convenient to assemble.

Preferably, the opening 211 is provided in plurality, the plurality of openings 211 are provided at intervals along the circumferential direction of the first pipe 21, and the inner wall of each opening 211 is provided with the elastic catch 24. Through setting up a plurality of openings 211 to set up a plurality of elasticity buckles 24, increase the axial area of contact of first pipe 21 and first body 11, improve the joint strength of male joint 1 and female joint 2, and then improve the joint strength of two pipelines, or pipeline and valve body. In this embodiment, two openings 211 are provided, and two elastic buckles 24 are also provided, and the two elastic buckles 24 are arranged oppositely. In other embodiments, three or more openings 211 may be provided, that is, three or more elastic buckles 24 may be provided, so as to ensure the connection strength of the male connector 1 and the female connector 2.

Optionally, the first flange 12 is provided with a first limiting portion 121, the third flange 23 is provided with a second limiting portion 231, and the first limiting portion 121 and the second limiting portion 231 are matched to limit the circumferential direction of the first pipe 21 and the first pipe body 11. Through setting up first spacing portion 121 and the spacing portion 231 of second, realize male joint 1 and female joint 2's circumferential direction connection and installation location, further improve the joint strength of two pipelines, or pipeline and valve body, and the assembly is more convenient and fast.

In this embodiment, the first position-limiting portion 121 is a slot disposed on the first flange 12, and the second position-limiting portion 231 is a protrusion protruding from the third flange 23, and the protrusion is inserted into the slot. The cooperation of the bulges and the clamping grooves is adopted, the structure is simple, and the processing is convenient. In another embodiment, the positions of the protrusion and the slot can be interchanged, that is, the first position-limiting portion 121 is a protrusion protruding from the first flange 12, and the second position-limiting portion 231 is a slot disposed on the third flange 23.

Preferably, the first position-limiting portions 121 are provided in plurality, the first position-limiting portions 121 are provided at intervals along the circumferential direction of the first flange 12, and the second position-limiting portions 231 are correspondingly provided in plurality. Through setting up a plurality of spacing portions 121 of first portion and the spacing portion 231 of second, increase the circumference area of contact of first pipe 21 and first body 11, improve the joint strength of male joint 1 and female joint 2, and then improve the joint strength of two pipelines, or pipeline and valve body. In this embodiment, the protrusion and the slot are both provided with two. Two bulges are not arranged on the third flange 23 relatively, and two clamping grooves and two bulges are correspondingly arranged, so that foolproof connection can be realized. In other embodiments, the two protrusions may be disposed opposite to each other. In other embodiments, three or more protrusions and slots may be provided.

It will be appreciated that the end face of the second tube 22 presses against the sealing ring 3, with a sealing connection therebetween, forming a first sealing surface; the end face of the first pipe body 11 extrudes the sealing ring 3, and the sealing ring are in sealing connection to form a second sealing surface. The first and second sealing surfaces are the primary sealing surfaces of the overall structure.

Alternatively, the inner wall of the end of the first pipe 21 close to the second pipe 22 abuts against the seal ring 3, so that the inner wall of the end of the first pipe 21 close to the second pipe 22 and the seal ring 3 are in sealed connection to form a third seal surface, which serves as an auxiliary seal surface to further improve the sealing performance between the male joint 1 and the female joint 2 and further improve the sealing performance between the two pipes or between the pipes and the valve body.

Alternatively, the joint includes a support pipe 4, the support pipe 4 includes a first support pipe body 41 and a second support pipe body 42 connected, the first support pipe body 41 is disposed in the first pipe 21, and the second support pipe body 42 extends into the first pipe body 11. The support tube 4 is used for supporting the connection and use of the first tube 21 and the first tube body 11, and the assembly convenience and the connection strength of the first tube 21 and the first tube body are improved. Alternatively, the first support tube body 41 and the second support tube body 42 are an integrally formed one-piece structure, so that the overall strength of the support tube 4 is high. In this embodiment, the first pipeline 100 is an air inlet pipe, and the second pipeline 200 is an air inlet valve integrated with a heater. The support tube 4 is a metal member and the first tube 2 is a plastic member. In addition to the supporting and reinforcing function of the support tube 4, the support tube 4 is also used for conducting heat. In this case, the support tube 4 may be an aluminum tube, which has good heat conductivity. In other embodiments, the support tube 4 and the first tube 21 are integrally formed (e.g., cast) as a single structure, or they are connected by welding or connecting members, which is not limited herein. The material of the support tube 4 may be the same as or different from that of the first tube 21, and is not limited herein.

Further alternatively, the outer wall of the joint of the first support pipe 41 and the second support pipe 42 abuts against the seal ring 3 to form a fourth seal surface, which serves as an auxiliary seal surface to further improve the sealing performance between the male joint 1 and the female joint 2, and further improve the sealing performance between the two pipes or between the pipes and the valve body.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A connecting joint is characterized by comprising a male joint (1), a female joint (2) and a sealing ring (3), wherein the male joint (1) comprises a first pipe body (11), a first flange (12) and a second flange (13) which are axially arranged on the outer wall of the first pipe body (11) at intervals, the female joint (2) comprises a second pipe body, the second pipe body comprises a first pipe (21) and a second pipe (22) which are connected, the inner diameter of the first pipe (21) is larger than that of the second pipe (22), a third flange (23) is arranged on the outer wall of one end, far away from the second pipe (22), of the first pipe (21), an elastic buckle (24) is integrally formed on the first pipe (21), the first pipe (21) is sleeved outside the first pipe body (11), and the elastic buckle (24) crosses over the second flange (13), and is located between second flange (13) and first flange (12), the free end of elasticity buckle (24) with second flange (13) axial butt, sealing washer (3) clamp in between the terminal surface of second pipe (22) and the terminal surface of first body (11).

2. The connection joint according to claim 1, characterized in that the first tube (21) is provided with an opening (211), the opening (211) communicates with the inner cavity of the first tube (21), and the elastic catch (24) is provided on the inner wall of the opening (211).

3. The connection joint according to claim 2, wherein the opening (211) is provided in plurality, the plurality of openings (211) are provided at intervals along a circumferential direction of the first pipe (21), and an inner wall of each of the openings (211) is provided with the elastic catch (24).

4. The connection joint according to claim 1, wherein a first limit portion (121) is provided on the first flange (12), a second limit portion (231) is provided on the third flange (23), and the first limit portion (121) cooperates with the second limit portion (231) to circumferentially limit the first pipe (21) and the first pipe body (11).

5. The connection joint according to claim 4, wherein one of the first and second limiting portions (121, 231) comprises a protrusion, and the other of the first and second limiting portions (121, 231) comprises a catch, the protrusion being snapped into the catch.

6. The connection joint according to claim 4, wherein the first limiting portion (121) is provided in plurality, the first limiting portions (121) are provided in plurality at intervals along the circumferential direction of the first flange (12), and the second limiting portion (231) is provided in plurality correspondingly.

7. The connection joint according to claim 1, characterized in that the inner wall of the first pipe (21) near the end of the second pipe (22) abuts against the sealing ring (3).

8. The connector according to claim 1, further comprising a support tube (4), wherein the support tube (4) comprises a first support tube body (41) and a second support tube body (42) connected, the first support tube body (41) being disposed within the first tube (21), and the second support tube body (42) extending into the first tube body (11).

9. The connection joint according to claim 8, characterized in that the outer wall of the junction of the first support tube (41) and the second support tube (42) abuts against the sealing ring (3).

10. A connection joint according to any of claims 1-9, characterized in that the sealing ring (3) is made of rubber.