Dual seal lossless quick connector for VDA-NW interface

Abstract

The utility model discloses a kind of double sealing lossless quick connectors of VDA-NW interface, including combination shell, two arc clamping pieces and push fork. Combination shell is composed of main body, end cap and tail end, internal cavity is formed, and the inner wall of socket end is equipped with side groove;Clamping piece is rotatably connected in side groove, can open hidden or fold into cavity, and its clamping piece is made of engineering plastics to realize lossless clamping;Push fork is movably connected with clamping piece, and clamping piece is driven to act by pushing and back-off. Main body is equipped with guide slot to facilitate joint insertion, and spring is provided between end cap and main body to provide reset elastic force for push fork;The inner wall of tail end is equipped with double embedding groove, respectively embedding side sealing second sealing ring and end sealing first sealing ring, forming double sealing;Tail end outer wall is equipped with safety ring, and safety lock function is realized by cooperating with push fork limit post. The utility model realizes quick connection in second, sealing is reliable, lossless protection joint and safety protection is good, and it is suitable for the quick connection scene of VDA-NW series male joint.

Description

Technical Field

[0001] This utility model relates to quick connectors, specifically to a double-sealed, non-destructive quick connector with a VDA-NW interface. Background Technology

[0002] In existing technologies, VDA-NW interface connectors mostly use traditional threaded or snap-fit ​​connections. Threaded connections are cumbersome to operate, and the connection and disassembly processes are time-consuming, making it difficult to meet the efficiency requirements of rapid testing or production processes. While snap-fit ​​connections offer some speed improvements, they often suffer from unstable sealing performance, making them prone to leakage and affecting the accuracy of test results.

[0003] Meanwhile, existing connectors often use metal-to-metal contact with the connector surface for their clamping components, which can easily scratch and damage the VDA-NW series male connectors during connection and disassembly, reducing their lifespan. Furthermore, some quick connectors lack effective safety protection structures, and may loosen or even detach under lateral forces or accidental impacts, posing a safety hazard. Therefore, there is an urgent need for a VDA-NW interface quick connector that offers fast connection, reliable sealing, non-destructive connection, and safety protection to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a double-sealed non-destructive quick connector for VDA-NW interfaces, enabling rapid connection within seconds and improving connection efficiency; the double-sealing design ensures reliable sealing performance; the non-destructive clamping structure protects the connector surface, extending the connector's service life; and a safety lock and double protection structure are provided to ensure the stability and security of the connection.

[0005] To solve the above technical problems, this utility model achieves the following solution: A double-sealed, non-destructive, quick connector for a VDA-NW interface, comprising:

[0006] The combined shell has a through cavity that extends through both ends. The inner wall of the socket end of the through cavity is provided with two side grooves that are arranged opposite to each other. The combined shell is also provided with two push fork through holes.

[0007] Two arc-shaped clamping members are provided. The two clamping members are rotatably connected to the two side grooves respectively. The two clamping members can open and close through the rotation point. When the two clamping members are open, they are hidden in the corresponding side grooves. When they are closed, the clamping edge enters the through cavity.

[0008] The push fork is driven to connect with the two clamping members. The fork opening enters through the two push fork through holes and is movably connected to the two clamping members respectively. The push fork retraction and push-in drive the two clamping members to perform corresponding clamping and opening actions.

[0009] Further, the combined shell includes:

[0010] The main body is a one-piece structure. The upper part of the main body is a circular ring, and the lower part is an oval structure. The side of the circular ring and the oval structure are connected to form two side holes, which are arranged opposite to each other.

[0011] An end cap is attached to the socket end of the main body. Its side covers the two side holes and forms the side groove between them. Two push fork through holes are provided in the end cap.

[0012] The tail end is threadedly connected to the main body, and the cavity is formed inside the component after the connection.

[0013] Furthermore, the socket of the main body has a guide groove that is disposed opposite to the main body.

[0014] Furthermore, the annular portion is also provided with two shaft holes, which are located on both sides of the guide groove and connected to the side groove. The oval structure is provided with a lower shaft hole coaxial with the shaft holes.

[0015] Furthermore, one end of the clamping member is connected to the shaft hole and the lower shaft hole through a first cylindrical pin, and an oval hole is provided in the middle area of ​​its plate surface;

[0016] The length directions of the two oval holes are set at an angle;

[0017] The push fork has a second cylindrical pin vertically arranged on one side of each of its two fork ends, and the two second cylindrical pins are confined to the two oval hole areas one to one fork.

[0018] The clamping member includes a clamping piece and an arc-shaped clamping body, wherein the clamping piece covers and fixes one side of the arc-shaped clamping body.

[0019] Furthermore, a coaxial spring hole is provided at the same position on the end cap and the main body;

[0020] The push fork has a spring limiting hole at a position opposite to the coaxial spring hole;

[0021] A spring is provided between the coaxial spring hole and the spring limiting hole.

[0022] Furthermore, the inner wall of the tail end is provided with two grooves, which are distributed vertically. The groove near the socket end is provided with a second sealing ring for side sealing, and the other groove is provided with a first sealing ring for end sealing.

[0023] Furthermore, the outer wall of the tail end is provided with a step and a ring of grooves;

[0024] The tail end is fitted with a safety ring in the area between the step and the slot, and a limiting structure is provided on one side wall of the outer periphery of the safety ring to limit the movement area of ​​the outer end of the push fork.

[0025] A groove is provided in the area between the step and the slot, and a third sealing ring is embedded in the groove;

[0026] The slot has at least one retaining ring, which is used to define the safety ring.

[0027] Furthermore, the limiting structure includes a vertical block and an L-shaped block, with an outer groove formed between the vertical block and the L-shaped block, and the L-shaped opening of the L-shaped block communicating with the outer groove.

[0028] Furthermore, the push fork is an integral structure with a U-shaped body and a vertical U-shaped limiting post, which is confined to the outer groove and L-shaped opening area for movement.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] 1. This utility model has high connection efficiency: It adopts a push-fork pressing drive method. Pressing down the push fork opens the clamping part. After inserting the connector, the push fork is released. Under the action of spring force, the clamping part closes and bites the slot or protrusion of the connector, completing the rapid connection. It can achieve connection within seconds, which greatly improves the efficiency of the testing process.

[0031] 2. The present invention has reliable sealing performance: it is designed with a dual sealing system of end face sealing and side sealing, and a third sealing ring is provided between the safety ring and the tail end. The multiple sealing systems ensure a stable sealing effect after connection and prevent leakage.

[0032] 3. This utility model has good safety protection: the push fork is equipped with a safety lock. After the push fork is retracted, rotating the safety ring can lock the push fork. The double protection ensures the reliability of the connection. Even under large lateral forces, it can ensure that the quick connector does not loosen or fall off. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the quick connector of this utility model.

[0034] Figure 2 This is a cross-sectional view of the quick connector of this utility model.

[0035] Figure 3 This is a connection structure diagram of the clamping component and the push fork of this utility model.

[0036] Figure 4 This is an exploded view of the quick connector of this utility model.

[0037] Figure 5 This is a structural diagram of the main body of this utility model.

[0038] Figure 6 This is another structural view of the main body of this utility model.

[0039] Figure 7 This is a structural diagram of the safety ring of this utility model.

[0040] The following labels are used in the attached diagram: 1-First cylindrical pin, 2-Push fork, 3-Main body, 4-Safety ring, 5-End cap, 6-Tail end, 8-Clamping component, 10-Third sealing ring, 11-Second sealing ring, 12-First sealing ring, 13-Snap ring, 14-Spring, 16-Push fork through hole, 21-Limiting post, 31-Circular part, 32-Conical surface, 33-Oval structure, 34-Side hole, 35-Guide groove, 36-Shaft hole, 41-Outer groove, 42-L-shaped opening, 81-Clamping piece, 82-Arc-shaped clamping body, 83-Oval hole. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0042] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0043] Example 1: The specific structure of this utility model is as follows:

[0044] Please refer to the appendix. Figure 1-7 The present invention relates to a double-sealed non-destructive quick connector for a VDA-NW interface, comprising a combined shell, two arc-shaped clamping parts 8, and a push fork 2.

[0045] The combined housing structure has a through cavity at both ends for the insertion of the VDA-NW series male connector and media flow. The combined housing consists of a main body 3, an end cap 5, and a tail end 6. The main body 3 is a one-piece structure, with an upper ring 31 and a lower oval structure 33. The ring 31 and the oval structure 33, when connected, form two opposing side holes 34 on their sides. The end cap 5 is attached to the socket end of the main body 3 by bolts or clips. Its side covers the two side holes 34, forming a side groove between it and the side holes 34 to accommodate the clamping component 8. The end cap 5 has two push-fork through holes 16 for the fork ends of the push forks 2 to pass through. The tail end 6 is threaded to the main body 3, forming the through cavity inside the assembly. The outer end of the tail end 6 can be designed with different interface structures according to customer requirements to adapt to different testing or connection equipment. The inner wall of the main body 3 also has a conical surface 32, which mates with the VDA-NW interface.

[0046] Guiding and connecting structure: The socket of the main body 3 has a guide groove 35 arranged opposite to each other. When the VDA-NW series male connector is inserted, the guide groove 35 plays a guiding role to ensure that the connector is quickly and accurately positioned. The annular part 31 is also provided with two shaft holes 36, which are located on both sides of the guide groove 35 and connected to the side groove. The oval structure 33 is provided with a lower shaft hole coaxial with the shaft holes 36. One end of the clamping member 8 passes through the shaft hole 36 and the lower shaft hole through the first cylindrical pin 1, realizing the rotatable connection between the clamping member 8 and the main body 3.

[0047] Clamping component and push fork drive structure: The clamping component 8 has an oblong hole 83 in the middle area of ​​its plate surface, and the two oblong holes 83 are set at an angle along their length. The push fork 2 is an integral metal structure with a U-shaped body and a vertical U-shaped limiting post 21. A second cylindrical pin is vertically set on one side of each of the two fork ends of the push fork 2. The two second cylindrical pins are inserted one-to-one and confined to the area of ​​the two oblong holes 83. When the push fork 2 is pushed into the through cavity, the second cylindrical pin slides in the oblong hole 83, driving the two clamping components 8 to rotate outward around the first cylindrical pin 1 and open, hiding in the side groove. When the push fork 2 is released, the push fork 2 retracts under the elastic force of the spring 14, the second cylindrical pin slides in the opposite direction, driving the two clamping components 8 to rotate inward and close, the clamping edge enters the through cavity, and bites the slot or protrusion of the VDA-NW series male connector. The clamping component 8 includes a clamping piece 81 and an arc-shaped clamping body 82. The clamping piece 81 is made of engineering plastics such as polytetrafluoroethylene and is fixed along one side of the arc-shaped clamping body 82 by bonding or injection molding to achieve non-destructive clamping of the VDA-NW series male connectors.

[0048] Spring return structure: The end cap 5 and the main body 3 are provided with coaxial spring holes at the same position; the push fork 2 is provided with a spring limiting hole at the position opposite to the coaxial spring hole; a spring 14 is provided between the coaxial spring hole and the spring limiting hole. The spring 14 is always in a compressed state, providing the push fork 2 with the elastic force to return, ensuring that the clamping part 8 remains closed when no external force is applied, and ensuring the reliability of the connection.

[0049] Double sealing structure: The inner wall of the tail end 6 is provided with two grooves distributed vertically. The groove near the socket end is provided with a second sealing ring 11, which is a star-shaped ring structure and is used for side sealing after the VDA-NW series male connector is inserted; the other groove is provided with a first sealing ring 12, which is used for end face sealing of the connector. The double sealing structure effectively prevents media leakage and improves sealing performance.

[0050] Safety Protection Structure: The outer wall of the tail end 6 is provided with a step and a groove; a safety ring 4 is fitted in the area between the step and the groove. A limiting structure is provided on one side wall of the outer periphery of the safety ring 4. The limiting structure includes a vertical block and an L-shaped block. An outer groove 41 is formed between the vertical block and the L-shaped block. The L-shaped opening 42 of the L-shaped block communicates with the outer groove 41. The limiting post 21 of the push fork 2 is limited to move within the area of ​​the outer groove 41 and the L-shaped opening 42. A groove is provided in the area between the step and the groove, and a third sealing ring 10 is embedded therein to enhance the sealing between the safety ring 4 and the tail end 6 and prevent external impurities from entering. Two retaining rings 13 are fitted in the groove. The two retaining rings 13 are located on both sides of the safety ring 4, respectively, to limit the axial position of the safety ring 4 and prevent it from falling off. When the VDA-NW series male connector is inserted and clamped by the clamping member 8, the push fork 2 is pressed down so that the limiting post 21 is located at the bottom of the outer groove 41. Then, the safety ring 4 is rotated to turn the limiting post 21 into the L-shaped opening 42. The transverse section of the L-shaped opening 42 forms an axial limit on the limiting post 21, thereby locking the push fork 2 and realizing the safety lock function. The double protection ensures that the connection will not loosen when subjected to external force.

[0051] The working process of this utility model is as follows: When in use, first press down the push fork 2 towards the through cavity. The push fork 2 moves forward against the elastic force of the spring 14. Through the cooperation of the second cylindrical pin and the oblong hole 83, the two clamping parts 8 are driven to open and hide in the side groove. Align the VDA-NW series male connector with the socket of the main body 3 and insert it into the through cavity under the guidance of the guide groove 35 until the end of the connector contacts the first sealing ring 12. Release the push fork 2. Under the elastic force of the spring 14, the push fork 2 retracts, driving the two clamping parts 8 to close. The clamping piece 81 bites the slot or protrusion of the connector. At the same time, the second sealing ring 11 fits against the side of the connector to form a double seal.

[0052] Finally, rotate the safety ring 4 to lock the limiting post 21 of the push fork 2 into the L-shaped opening 42, completing the safety locking. For disassembly, rotate the safety ring 4 in the opposite direction to return the limiting post 21 to the outer groove 41, press down the push fork 2 to open the clamping part 8, and then pull out the VDA-NW series male connector.

[0053] In summary, this utility model has high connection efficiency: it adopts a push-fork pressing drive method, pressing down the push fork opens the clamping part, inserts the connector, and then releases the push fork. Under the action of the spring force, the clamping part closes and bites the slot or protrusion of the connector, completing a rapid connection. It can achieve connection within seconds, which greatly improves the efficiency of the testing process.

[0054] This invention features reliable sealing performance: it employs a dual sealing design with end face sealing and side sealing, and a third sealing ring is provided between the safety ring and the tail end. This multi-layered sealing ensures a stable sealing effect after connection and prevents leakage.

[0055] This utility model has good safety protection: the push fork is equipped with a safety lock, and the safety ring can be rotated to lock the push fork after it is retracted. The double protection ensures the reliability of the connection. Even under large lateral forces, it can ensure that the quick connector does not loosen or fall off.

[0056] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A double-sealed, non-destructive, quick connector with a VDA-NW interface, characterized in that, include: The combined shell has a through cavity that extends through both ends. The inner wall of the socket end of the through cavity is provided with two side grooves that are arranged opposite to each other. The combined shell is also provided with two push fork through holes. Two arc-shaped clamping members (8) are provided. The two clamping members (8) are rotatably connected to the two side grooves respectively. The two clamping members (8) can open and close through the rotation point. When the two clamping members (8) are open, they are hidden in the corresponding side grooves. When they are closed, the clamping edge enters the through cavity. The push fork (2) is driven to be connected to the two clamping members (8). The fork opening of the push fork (2) enters from the two push fork through holes and is movably connected to the two clamping members (8) respectively. The push fork (2) drives the two clamping members (8) to perform corresponding clamping and opening actions by retracting and pushing in.

2. The VDA-NW interface double-sealed non-destructive quick connector according to claim 1, characterized in that, The combined shell includes: The main body (3) is an integral structure. The upper part of the main body is a ring part (31), and the lower part is an oval structure (33). The side of the ring part (31) and the oval structure (33) after being connected forms two side holes (34), and the two side holes (34) are arranged opposite to each other. End cap (5) is attached to the socket end of the main body (3). Its side covers the two side holes (34) and forms the side groove between them. Two push fork through holes are provided in the end cap (5). The tail end (6) is threaded to the main body (3), and the cavity is formed inside the component after the connection.

3. The VDA-NW interface double-sealed non-destructive quick connector according to claim 2, characterized in that, The socket of the main body (3) has a guide groove (35) arranged opposite to each other.

4. The VDA-NW interface double-sealed non-destructive quick connector according to claim 3, characterized in that, The annular portion (31) is also provided with two shaft holes (36), which are located on both sides of the guide groove (35) and connected to the side groove. The oval structure (33) is provided with a lower shaft hole coaxial with the shaft holes (36).

5. A double-sealed, non-destructive, quick connector for a VDA-NW interface according to claim 4, characterized in that, One end of the clamping member (8) is connected to the shaft hole (36) and the lower shaft hole through the first cylindrical pin (1), and an oval hole (83) is provided in the middle area of ​​its plate surface; The two oval holes (83) are set at an angle along their length; The push fork (2) has a second cylindrical pin vertically arranged on one side of each of the two fork ends. The two second cylindrical pins are restricted to move within the area of ​​the two oval holes (83) one to one. The clamping member (8) includes a clamping piece (81) and an arc-shaped clamping body (82), wherein the clamping piece (81) covers and fixes one side of the arc-shaped clamping body (82).

6. A double-sealed, non-destructive, quick connector for a VDA-NW interface according to claim 2, characterized in that, The end cap (5) and the main body (3) are provided with coaxial spring holes at the same position; The push fork (2) has a spring limiting hole at a position opposite to the coaxial spring hole; A spring (14) is provided between the coaxial spring hole and the spring limiting hole.

7. A double-sealed, non-destructive, quick connector for a VDA-NW interface according to claim 2, characterized in that: The inner wall of the tail end (6) is provided with two grooves, which are distributed vertically. The groove near the socket end is provided with a second sealing ring (11) for side sealing, and the other groove is provided with a first sealing ring (12) for end sealing.

8. A double-sealed non-destructive quick connector for a VDA-NW interface according to claim 2, characterized in that: The outer wall of the tail end (6) is provided with a step and a ring of grooves; The tail end (6) is fitted with a safety ring (4) in the area between the step and the slot. A limiting structure is provided on one side wall of the outer periphery of the safety ring (4) to limit the movement area of ​​the outer end of the push fork (2). A groove is provided in the area between the step and the slot, and a third sealing ring (10) is embedded in the groove; The slot is fitted with at least one retaining ring (13), which is used to define the safety ring (4).

9. A double-sealed non-destructive quick connector for a VDA-NW interface according to claim 8, characterized in that: The limiting structure includes a vertical block and an L-shaped block, with an outer groove (41) formed between the vertical block and the L-shaped block, and the L-shaped opening (42) of the L-shaped block is connected to the outer groove (41).

10. A double-sealed, non-destructive, quick connector for a VDA-NW interface according to claim 9, characterized in that: The push fork (2) is an integral structure with a U-shaped body and a vertical U-shaped limiting post (21). The limiting post (21) is limited to the area of ​​the outer groove (41) and the L-shaped opening (42).

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