A connector

Abstract

The present invention discloses a connector. The technical solution employed comprises: a housing, pin terminals and a rubber core sequentially disposed within the housing; the rubber core is provided with a set of terminal holes for inserting the pin terminals; and a set of locking levers is integrally formed above the front end of each terminal hole. The front end of each locking lever is provided with a locking head, which has a first inclined sliding surface at the front upper end, a second inclined sliding surface at the rear lower end, and a positioning opening at the front end. Advantages of the connector include: the pins on the plug can slide freely, adapting to the requirements of different socket distances, ensuring a complete fit between the plug and the socket, and improving the reliability and stability of the connection.

Description

Technical Field

[0001] The invention belongs to the field of connectors, and in particular relates to an automobile wiring harness connector. Background Art

[0002] Automotive wiring harness connectors are a crucial component of automotive electronic circuits. Their primary function is to connect electronic components, ECUs (electronic control units), sensors, actuators, and other electrical and electronic devices within the vehicle, ensuring power and signal transmission. Wiring harness connectors consist of a plug and a socket. The pins on the plug must be inserted into the sockets of the socket to complete the connection. However, due to the varying socket spacings between various devices, if the pins cannot be flexibly adjusted, insertion problems or socket damage can occur. Furthermore, a certain amount of insertion force is applied when the connector is inserted into the socket to ensure a tight fit between the plug and socket and a reliable electrical connection. Excessive insertion force can exert excessive pressure on the pins, causing deformation or breakage, compromising the connection. Conventional plugs typically have fixed pins, making them incompatible with sockets with varying socket spacings. This has the disadvantage of limited adaptability and the risk of pin deformation or breakage. Therefore, a connector with flexible mating—meaning the pins on the plug can slide freely to accommodate sockets with varying socket spacings, ensuring a secure fit between the plug and socket and improving connection reliability and stability—remains a currently unresolved technical challenge. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a connector whose pins can slide freely and reset automatically.

[0004] To solve the above problems, the technical solution adopted by the present invention includes: a housing, and a pin terminal and a rubber core sequentially arranged in the housing, characterized in that: a group of terminal holes for inserting the pin terminals are provided in the rubber core, and a locking rod is integrally formed above each terminal hole, and a locking head is provided at the front end of the locking rod, and the locking head is provided with a first inclined sliding surface at the front upper part, a second inclined sliding surface at the rear lower part, and a positioning hole at the front end;

[0005] A square contact box is provided in the middle of the pin terminal, a positioning groove is provided above the square contact box, a protrusion is provided at the lower end, and a third inclined sliding surface is provided at the rear end of the protrusion; when the pin terminal is inserted into place, the lower end of the locking head is embedded in the positioning groove, the first inclined sliding surface applies pressure on the third inclined sliding surface, and can push the pin terminal forward, the end of the second inclined sliding surface abuts against the rear edge of the positioning groove, and a gap is left between the front edge of the positioning groove and the positioning opening; when the backward thrust of the pin terminal is greater than the resistance of the locking rod, the pin terminal can be pushed backward until the positioning opening abuts against the front edge of the positioning groove.

[0006] When the pin terminal is pushed backward until the positioning port contacts the front edge of the positioning groove, the rear end of the first inclined sliding surface applies pressure to the front end of the third inclined sliding surface; when the backward thrust of the pin terminal disappears, the locking rod can push the pin terminal forward.

[0007] The housing is provided with a docking cavity at the front end and a mounting cavity at the rear end; a group of longitudinal partition walls are provided in front of the mounting cavity, and the mounting cavity is divided into a plurality of terminal insertion cavities by the partition walls; a group of tapered pinholes communicating with the docking cavity are provided at the front end of the terminal insertion cavity; the rubber core is provided at the rear end of the mounting cavity, and the locking rods are respectively inserted into the terminal insertion cavities; the pin terminals are inserted into the terminal insertion cavities through the terminal holes, and a pin portion extending into the mounting cavity is provided at the front end thereof, and a tapered positioning portion is provided at the rear end of the pin portion. When the pin terminal is inserted into place, the tapered positioning portion is embedded in the tapered pinhole.

[0008] A group of first positioning ribs are provided on both sides of the terminal insertion cavity, and second positioning ribs are provided on both sides of the locking rod. The two sides of the upper end of the square contact box are positioned and matched with the first positioning ribs, and the second positioning ribs are positioned and matched with the first positioning ribs, and the protrusion is positioned between the second positioning ribs.

[0009] An unlocking hole is provided above the terminal insertion cavity, and a yielding inclined surface is provided at the upper end of the uppermost locking rod. An unlocking inclined surface is provided above the positioning port. When unlocking, the pin terminals are unlocked from top to bottom in sequence; when assembling, the pin terminals are inserted into the terminal insertion cavity in sequence from bottom to top.

[0010] A fourth inclined sliding surface is provided at the bottom of the terminal inserting cavity, and the fourth inclined sliding surface is slidably matched with the third inclined sliding surface of the lowest locking rod.

[0011] A first sealing ring and an inner liner are sequentially provided in the docking cavity of the shell, a second sealing ring is provided at the rear end of the installation cavity of the shell, an elastic clip is provided at the front end of the inner liner, a clip groove for placing the elastic clip is provided on the shell, and a slidable secondary lock is provided at the front end of the clip groove through a slide groove.

[0012] The rubber core is fixed in the shell by ultrasonic welding.

[0013] The four corners of the installation cavity are provided with first welding surfaces, the four corners of the rubber core are provided with second welding surfaces adapted to the first welding surfaces, the first welding surfaces are provided with welding ribs, and a stacking trough is provided in front of the second welding surfaces.

[0014] The surface of the welding rib is provided with a grid groove.

[0015] The advantages of the connector of the present invention are as follows: 1. The pins on the plug can slide freely to adapt to the requirements of jacks at different distances, ensure the complete fit of the plug and the socket, and improve the reliability and stability of the connection; 2. Through the design of the movable pins, force can be applied in the flexible direction to disperse and reduce the pressure on the pins, prevent the pins from deforming or breaking, and thus improve the life and reliability of the connector; 3. When the backward thrust of the pin terminal disappears, the pin terminal can also automatically reset for subsequent normal use; 4. The pin terminal can be unlocked and removed from the shell for easy replacement; 5. The overall stability and waterproofness are better, and the size is small.

[0016] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded view of the steam connector of the present invention;

[0018] Figure 2 is a cross-sectional view of the steam connector of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the housing of the present invention;

[0020] Figure 4 is a cross-sectional view of the housing of the present invention;

[0021] Figure 5 It is a schematic diagram of the internal structure of the housing of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the rubber core of the present invention;

[0023] Figure 7 This is a cross-sectional view of the pin of the present invention

[0024] Figure 8 yes Figure 2 A partial enlarged view of .

[0025] Wherein: 1. Housing; 2. Pin terminal; 3. Rubber core; 4. Terminal hole; 5. Locking rod; 6. Locking head; 7. First inclined sliding surface; 8. Fourth inclined sliding surface; 9. Second inclined sliding surface; 10. Positioning opening; 11. Square contact box; 12. Positioning groove; 13. Raised portion; 14. Third inclined sliding surface; 15. Rear edge; 16. Front edge; 17. Gap; 18. Docking cavity; 19. Mounting cavity; 20. Isolation wall; 21. Terminal insertion cavity; 2 2. Conical pinhole; 23. Pin insertion part; 24. Conical positioning part; 25. First positioning rib; 26. Second positioning rib; 27. Unlocking hole; 28. Yielding inclined surface; 29. ​​Unlocking inclined surface; 30. First sealing ring; 31. Lining; 32. Second sealing ring; 33. Elastic buckle; 34. Buckle groove; 35. Slide groove; 36. Second locking buckle; 37. First welding surface; 38. Second welding surface; 39. Welding rib; 40. Grille groove; 41. Stacking trough. DETAILED DESCRIPTION

[0026] Reference Figures 1-8As shown, the connector of the present invention comprises a housing 1, and pin terminals 2 and a rubber core 3 sequentially disposed within the housing 1. The rubber core 3 includes a set of terminal holes 4 for inserting the pin terminals 2. To ensure the pin terminals 2 can be inserted in a single direction, the terminal holes 4 are typically square and conform to the square contact boxes 11 within the terminal holes 4. A locking rod 5 is integrally formed above each terminal hole 4. The front end of the locking rod 5 is provided with a locking head 6. A first inclined sliding surface 7 is provided above and above the locking head 6. A second inclined sliding surface 9 is provided below and behind the locking head 6. A positioning opening 10 is provided at the front end of the locking rod 5. Because the front end of the locking rod 5 is free, a certain amount of tension is generated. A square contact box 11 is provided in the middle of the pin terminal 2. A positioning groove 12 is provided above the square contact box 11. A protrusion 13 is provided at the lower end of the square contact box 11. A third inclined sliding surface 14 is provided at the rear end of the protrusion 13. When the pin terminal 2 is fully inserted, the lower end of the locking head 6 engages the positioning groove 12. The first inclined sliding surface 7 applies pressure to the third inclined sliding surface 14. Under the tension of the locking lever 5, the pin terminal 2 is pushed forward, stably retaining the pin terminal 2 within the housing 1. The end of the second inclined sliding surface 9 abuts the rear edge 15 of the positioning groove 12, further protecting and stabilizing the pin terminal 2. A gap 17 is left between the front edge 16 of the positioning groove 12 and the positioning opening 10, allowing space for the pin terminal 2 to slide backward. When the backward thrust of the pin terminal 2 exceeds the resistance of the locking lever 5, the pin terminal 2 can be pushed backward until the positioning opening 10 abuts the front edge 16 of the positioning groove 12. Note: Because the resistance exerted by the locking lever 5 on the pin terminal 2 is greater than the pressure generated by normal pin insertion, normal insertion does not cause the pin to slide.

[0027] Preferably, when the pin terminal 2 is pushed backward until the positioning opening 10 abuts the front edge 16 of the positioning groove 12, the rear end of the first inclined sliding surface 7 applies pressure to the front end of the third inclined sliding surface 14. When the backward thrust of the pin terminal 2 disappears, the locking lever 5 can push the pin terminal 2 forward, thereby automatically resetting the pin terminal 2. For smoother sliding, appropriate grease can be added.

[0028] Preferably, the housing 1 is provided with a docking cavity 18 at the front end and a mounting cavity 19 at the rear end. A set of longitudinal partition walls 20 are provided in front of the mounting cavity 19, which divide the mounting cavity 19 into a plurality of terminal insertion cavities 21. A set of tapered pinholes 22 communicating with the docking cavity 18 are provided at the front end of the terminal insertion cavity 21. The rubber core 3 is provided behind the mounting cavity 19, and the locking rods 5 are respectively inserted into the terminal insertion cavities 21. The pin terminals 2 are inserted into the terminal insertion cavities 21 through the terminal holes 4. A pin portion 23 extending into the mounting cavity 19 is provided at the front end of the pin terminals 2, and a tapered positioning portion 24 is provided at the rear end of the pin portion 23. When the pin terminals 2 are inserted into place, the tapered positioning portion 24 engages with the tapered pinholes 22. Through the above structure, the terminals are isolated from each other and can be stably maintained within the housing 1, thereby improving their stability and safety.

[0029] Preferably, a set of first positioning ribs 25 are provided on both sides of the terminal insertion cavity 21, and second positioning ribs 26 are provided on both sides of the locking lever 5. The upper sides of the square contact box 11 are positioned and matched with the first positioning ribs 25, and the second positioning ribs 26 are positioned and matched with the first positioning ribs 25, with the protrusion 13 positioned between the second positioning ribs 26. The cooperation between the first positioning ribs 25 and the second positioning ribs 26 enables precise insertion of the pin terminal 2 and improves its stability after assembly.

[0030] Preferably, an unlocking hole 27 is provided above the terminal plug-in cavity 21, and a yielding inclined surface 28 is provided on the upper end of the uppermost locking rod 5, and an unlocking inclined surface 29 is provided above the positioning port 10. Since this example is a 7-pin structure and is provided with three columns, a yielding inclined surface 28 needs to be provided on the upper end of the uppermost locking rod 5 in each column. When unlocking: unlock the pin terminal 2 from top to bottom in sequence. When assembling: insert the pin terminal 2 into the terminal plug-in cavity 21 from bottom to top in sequence. Since the assembled pin terminal 2 and the locking rod 5 are close to each other, the unlocking resistance will be very large. After adopting the above structure, the pin terminal 2 is unlocked from top to bottom in sequence, so that the unlocking resistance is smaller and unlocking is easier. Similarly, the pin terminal 2 is inserted into the terminal plug-in cavity 21 from bottom to top in sequence, making assembly easier.

[0031] Preferably, a fourth inclined sliding surface 8 is provided at the bottom of the terminal insertion cavity 21. This fourth inclined sliding surface 8 slidably engages with the third inclined sliding surface 14 of the bottommost locking lever 5. The sliding travel between the fourth inclined sliding surface 8 and the third inclined sliding surface 14 is the same as that of the first inclined sliding surface 7. Since there is no locking lever 5 below the bottommost pin terminal 2, the provision of the fourth inclined sliding surface 8 allows the pin terminal 2 to be lifted when pushed backward, thereby applying pressure from the upper locking lever 5, thereby achieving the same automatic reset effect.

[0032] Preferably, the docking cavity 18 of the housing 1 is provided with a first sealing ring 30 and an inner liner 31, respectively. A second sealing ring 32 is provided at the rear end of the mounting cavity 19 of the housing 1. An elastic latch 33 is provided at the front end of the inner liner 31. The housing 1 is provided with a latch groove 34 for receiving the elastic latch 33. A slidable secondary latch 36 is provided at the front end of the latch groove 34 via a slide groove 35. The inner liner 31 is ideally secured to the docking cavity 18 of the housing 1 using ultrasonic welding to enhance connection stability. When docked with the socket, the elastic latch 33 connects with a locking hook on the socket to lock the plug and socket. To prevent the elastic latch 33 from being accidentally locked, the secondary latch 36 can be slid backward and abutted against the front end of the elastic latch 33 to provide a secondary lock. To unlock the elastic latch 33, the secondary latch 36 must first be moved forward. This significantly improves safety and reliability. In addition, since the first sealing ring 30 is arranged inside the housing 1, compared with the traditional arrangement at the opening of the housing 1, its insertion and removal resistance is smaller and it is not easy to fall off.

[0033] Preferably, the rubber core 3 is fixed to the housing 1 by ultrasonic welding to improve strength. In addition, in ultrasonic welding, in order to achieve reliable and firm welding retention while ensuring that the product is flat and not deformed after welding, controllable welding energy and higher precision requirements for welding height dimensions are required, which means that we need more advanced welding settings, but this will undoubtedly increase production costs. To solve this problem, the present invention provides first welding surfaces 37 at the four corners of the installation cavity 19, and provides second welding surfaces 38 corresponding to the first welding surfaces 37 at the four corners of the rubber core 3. Welding ribs 39 are provided on the first welding surfaces 37, and a stacking trough 41 is provided in front of the second welding surface 38. The stacking trough 41 serves to stack materials and position the rubber core 3. When the welding ribs 39 are welded and melted, they fill the stacking trough 41, which can improve the retention force while preventing deformation of the rubber core upper surface and shrinkage of the hole position.

[0034] Preferably, a grid groove 40 is provided on the surface of the welding rib 39. During ultrasonic welding, the grid groove 40 allows the welding rib 39 to melt quickly, thereby increasing the welding speed.

[0035] As mentioned above, the present invention is not limited in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of the structure and technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A connector comprising a housing (1) and a pin terminal (2) and a rubber core (3) sequentially arranged in the housing (1), characterized in that: The rubber core (3) is provided with a group of terminal holes (4) for inserting the pin terminals (2), and a locking rod (5) is integrally formed above each of the terminal holes (4), and a locking head (6) is provided at the front end of the locking rod (5), and a first inclined sliding surface (7) is provided at the front upper part of the locking head (6), a second inclined sliding surface (9) is provided at the rear lower part, and a positioning opening (10) is provided at the front end; a square contact box (11) is provided at the middle part of the pin terminal (2), a positioning groove (12) is provided at the top of the square contact box (11), a protrusion (13) is provided at the lower end, and a third inclined sliding surface (14) is provided at the rear end of the protrusion (13); a fourth inclined sliding surface (8) is provided at the bottom of the terminal insertion cavity (21) at the rear end of the housing (1), and the fourth inclined sliding surface (8) is slidably matched with the third inclined sliding surface (14) of the bottommost locking rod (5); When the pin terminal (2) is inserted into place, the lower end of the locking head (6) is embedded in the positioning groove (12), the first inclined sliding surface (7) applies pressure to the third inclined sliding surface (14), and can push the pin terminal (2) forward, the end of the second inclined sliding surface (9) abuts against the rear edge (15) of the positioning groove (12), and a gap (17) is left between the front edge (16) of the positioning groove (12) and the positioning opening (10); when the backward thrust of the pin terminal (2) is greater than the resistance of the locking rod (5), the pin terminal (2) can be pushed backward until the positioning opening (10) abuts against the front edge (16) of the positioning groove (12); When the pin terminal (2) is pushed backward until the positioning opening (10) abuts against the front edge (16) of the positioning groove (12), the rear end of the first inclined sliding surface (7) applies pressure to the front end of the third inclined sliding surface (14); when the backward thrust of the pin terminal (2) disappears, the pin terminal (2) can be pushed forward by the locking rod (5).

2. The connector according to claim 1, wherein: The housing (1) is provided with a docking cavity (18) at the front end and a mounting cavity (19) at the rear end. The mounting cavity (19) is divided into a plurality of terminal insertion cavities (21) at the front end by a group of longitudinal partition walls (20). The terminal insertion cavity (21) is provided with a group of tapered pinholes (22) in communication with the docking cavity (18) at the front end. The rubber core (3) is provided at the rear end of the mounting cavity (19), and the locking rods (5) are respectively inserted into the terminal insertion cavities (21). The pin terminal (2) is inserted into the terminal insertion cavity (21) through the terminal hole (4). The front end of the pin terminal (2) is provided with a pin portion (23) extending into the mounting cavity (19), and the rear end of the pin portion (23) is provided with a tapered positioning portion (24). When the pin terminal (2) is inserted into place, the tapered positioning portion (24) is embedded in the tapered pinhole (22).

3. The connector according to claim 2, wherein: A group of first positioning ribs (25) are provided on both sides of the terminal insertion cavity (21), and second positioning ribs (26) are provided on both sides of the locking rod (5). Both sides of the upper end of the square contact box (11) are positioned and matched with the first positioning ribs (25), and the second positioning ribs (26) are positioned and matched with the first positioning ribs (25), and the protrusion (13) is positioned between the second positioning ribs (26).

4. The connector according to claim 2, wherein: An unlocking hole (27) is provided above the terminal insertion cavity (21), and a yielding inclined surface (28) is provided on the upper end of the uppermost locking rod (5). An unlocking inclined surface (29) is provided above the positioning opening (10). When unlocking, the pin terminals (2) are unlocked sequentially from top to bottom; when assembling, the pin terminals (2) are inserted into the terminal insertion cavity (21) sequentially from bottom to top.

5. The connector according to claim 2, wherein: A first sealing ring (30) and an inner liner (31) are sequentially provided in the docking cavity (18) of the shell (1), a second sealing ring (32) is provided at the rear end of the mounting cavity (19) of the shell (1), an elastic buckle (33) is provided at the front end of the inner liner (31), a buckle groove (34) for accommodating the elastic buckle (33) is provided on the shell (1), and a slidable secondary lock buckle (36) is provided at the front end of the buckle groove (34) through a slide groove (35).

6. The connector according to claim 2, wherein: The rubber core (3) is fixed in the housing (1) by ultrasonic welding.

7. The connector according to claim 6, wherein: The four corners of the installation cavity (19) are provided with first welding surfaces (37), the four corners of the rubber core (3) are provided with second welding surfaces (38) adapted to the first welding surfaces (37), the first welding surfaces (37) are provided with welding ribs (39), and a material stacking trough (41) is provided in front of the second welding surface (38).

8. The connector according to claim 7, wherein: The surface of the welding rib (39) is provided with a grid groove (40).

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