Connector

Abstract

The invention discloses a connector. According to the technical scheme, the connector comprises a shell, pin terminals and a rubber core, the pin terminals and the rubber core are sequentially arranged in the shell, a set of terminal holes for the pin terminals to be inserted are formed in the rubber core, a set of locking rods are integrally formed above the front end of each terminal hole, locking heads are arranged at the front ends of the locking rods, and the locking heads are connected with the pin terminals. A first inclined sliding surface is arranged above the front of the locking head, a second inclined sliding surface is arranged below the rear of the locking head, and a positioning opening is formed in the front end of the locking head; the plug has the advantages that the contact pins on the plug can slide freely, the requirements of jacks with different distances are met, the plug and the socket are ensured to be completely attached, and the reliability and the stability of connection are improved.

Description

Technical Field

[0001] The present invention belongs to the field of connectors, and particularly relates to an automotive wire harness connector. Background Art

[0002] Automotive wire harness connectors are an important part of automotive electronic circuits. Their main function is to connect in-vehicle electronic components, ECUs (electronic control units), sensors, actuators and other electrical and electronic devices to ensure the transmission of power and signals. The wire harness connector consists of a plug and a socket. The pins on the plug need to be inserted into the jacks in the socket to complete the connection. However, due to the different distances between the jacks of various devices, if the pins cannot be flexibly adjusted in position, it will lead to poor insertion or damage to the socket. In addition, when the connector is inserted into the jack, a certain insertion force is applied to ensure a tight fit between the plug and the socket and form a reliable electrical connection. If the insertion force is too large, it will exert too much pressure on the pins, causing the pins to deform or break, affecting the connection effect. The pins on traditional plugs are usually fixed and cannot be applied to sockets with different jack distances, having the disadvantages of a small adaptation range or being prone to pin deformation or breakage. Therefore, it is a technical problem to be solved at present that the connector pins need to be movable, that is, the pins on the plug can slide freely to adapt to the requirements of jacks with different distances, ensure a perfect fit between the plug and the socket, and improve the reliability and stability of the connection. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a connector in which the 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. A locking head is provided at the front end of the locking rod, a first inclined sliding surface is provided above the front of the locking head, a second inclined sliding surface is provided below the rear, and a positioning port is provided at the front end; A square contact box is provided in the middle of the pin terminal. A positioning groove is provided above the square contact box, a convex portion is provided at the lower end, and a third inclined sliding surface is provided at the rear end of the convex portion; when the pin terminal is inserted in place, the lower end of the locking head is embedded in the positioning groove, the first inclined sliding surface presses 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 port; 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 port abuts against the front edge of the positioning groove.

[0005] When the pin terminal is pushed backwards 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 forwards.

[0006] 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, the mounting cavity is divided into a plurality of terminal plug-in cavities by the partition walls, a group of conical pinholes connected with the docking cavity are provided at the front end of the terminal plug-in cavity; the rubber core is provided at the rear of the terminal mounting cavity, and the locking rods are respectively inserted into the terminal plug-in cavities; the pin terminal is inserted into the terminal plug-in cavity through the terminal hole, a pin portion extending into the mounting cavity is provided at the front end, and a conical positioning portion is provided at the rear end of the pin portion, and when the pin terminal is inserted into place, the conical positioning portion is embedded in the conical pinhole.

[0007] 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.

[0008] An unlocking hole is provided above the terminal plug-in cavity, and a yielding inclined surface is provided at the upper end of the uppermost locking rod, and 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 plug-in cavity in sequence from bottom to top.

[0009] A fourth inclined sliding surface is provided at the bottom of the terminal insertion cavity, and the fourth inclined sliding surface is slidably matched with the third inclined sliding surface of the lowest locking rod.

[0010] A first sealing ring and an inner liner are sequentially arranged in the docking cavity of the shell, a second sealing ring is arranged at the rear end of the installation cavity of the shell, an elastic buckle is arranged at the front end of the inner liner, a buckle groove for placing the elastic buckle is arranged on the shell, and a slidable secondary lock buckle is arranged at the front end of the buckle groove through a sliding groove.

[0011] The rubber core is fixed in the shell by ultrasonic welding.

[0012] 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 surface is provided with welding ribs, and a stacking trough is provided in front of the second welding surface.

[0013] The surface of the welding rib is provided with a grid groove.

[0014] 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, ensuring complete fitting of the plug and socket, and improving the reliability and stability of the connection; 2. Through the design of movable pins, force can be applied in the flexible direction to disperse and reduce the pressure borne by the pins, preventing the pins from deforming or breaking, thereby improving the service life and reliability of the connector; 3. When the backward thrust of the pin terminal disappears, the pin terminal can 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 waterproof performance are better, and the volume is small.

[0015] The present invention will be further described below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded view of the automotive connector of the present invention; Figure 2 is a cross-sectional view of the automotive connector of the present invention; Figure 3 is a schematic structural view of the housing of the present invention; Figure 4 is a cross-sectional view of the housing of the present invention; Figure 5 is a schematic internal structural view of the housing of the present invention; Figure 6 is a schematic structural view of the rubber core of the present invention; Figure 7 is a cross-sectional view of the pin of the present invention Figure 8 is Figure 2 a partial enlarged view of

[0017] 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. protrusion; 14. third inclined sliding surface; 15. rear edge; 16. front edge; 17. gap; 18. docking cavity; 19. installation cavity; 20. partition wall; 21. terminal insertion cavity; 22. conical pin hole; 23. pin part; 24. conical positioning part; 25. first positioning rib; 26. second positioning rib; 27. unlocking hole; 28. relief inclined surface; 29. unlocking inclined surface; 30. first sealing ring; 31. lining; 32. second sealing ring; 33. elastic buckle; 34. buckle groove; 35. chute; 36. secondary lock; 37. first welding surface; 38. second welding surface; 39. welding rib; 40. grid groove; 41. stockpiling groove. DETAILED DESCRIPTION OF THE INVENTION

[0018] Referring to Figures 1 - 8As shown, the connector of the present invention includes a housing 1, a pin terminal 2 and a plastic core 3 sequentially arranged in the housing 1. A set of terminal holes 4 for inserting the pin terminal 2 are provided in the plastic core 3. Since the single direction of insertion of the pin terminal 2 needs to be ensured, the terminal holes 4 are usually square and adapted to the square contact box 11 of the terminal holes 4. A locking lever 5 is integrally formed above each terminal hole 4. A locking head 6 is provided at the front end of the locking lever 5. A first inclined sliding surface 7 is provided above the front of the locking head 6. A second inclined sliding surface 9 is provided below the rear of the locking head 6. A positioning port 10 is provided at the front end of the locking head 6. Since the front end of the locking lever 5 is a free end, a certain tension is formed. 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 convex portion 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 convex portion 13. After the pin terminal 2 is inserted in place, the lower end of the locking head 6 is embedded in the positioning groove 12. The first inclined sliding surface 7 presses against the third inclined sliding surface 14, and under the action of the tension of the locking lever 5, the pin terminal 2 can be pushed forward, so that the pin terminal 2 can be stably held in the housing 1. The end of the second inclined sliding surface 9 abuts against the rear edge 15 of the positioning groove 12, so that the pin terminal 2 can be further protected and stabilized. A gap 17 is left between the front edge 16 of the positioning groove 12 and the positioning port 10, so that the pin terminal 2 can have a space for backward sliding. When the backward thrust of the pin terminal 2 is greater than the resistance of the locking lever 5, the pin terminal 2 can be pushed backward until the positioning port 10 abuts against the front edge 16 of the positioning groove 12. Note: Since the resistance exerted by the locking lever 5 on the pin terminal 2 is greater than the pressure generated by normal insertion of the pin, normal insertion will not cause the pin to slide.

[0019] Preferably, when the pin terminal 2 is pushed backward until the positioning port 10 abuts against the front edge 16 of the positioning groove 12, the rear end of the first inclined sliding surface 7 presses against 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 to realize the automatic reset of the pin terminal 2. To make the sliding smoother, an appropriate amount of grease can be added.

[0020] Preferably, a docking cavity 18 is provided at the front end of the housing 1, and an installation cavity 19 is provided at the rear end. A group of longitudinal partition walls 20 are provided in front of the installation cavity 19. The installation cavity 19 is divided into a plurality of terminal insertion cavities 21 by the partition walls 20. A group of tapered pin holes 22 communicating with the docking cavity 18 are provided at the front ends of the terminal insertion cavities 21. The rubber core 3 is arranged behind the terminal installation 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. The front ends of the pin terminals 2 are provided with pin portions 23 extending into the installation cavity 19, and tapered positioning portions 24 are provided at the rear ends of the pin portions 23. When the pin terminals 2 are inserted in place, the tapered positioning portions 24 are embedded in the tapered pin holes 22. Through the above structure, mutual isolation between each terminal is achieved, and the terminals can be stably held in the housing 1 to improve its stability and safety.

[0021] Preferably, 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. The upper ends on both sides of the square contact box 11 are in positioning cooperation with the first positioning ribs 25. The second positioning ribs 26 are in positioning cooperation with the first positioning ribs 25, and the convex portions 13 are positioned between the second positioning ribs 26. Through the cooperation of the first positioning ribs 25 and the second positioning ribs 26, accurate insertion of the pin terminals 2 is achieved, and at the same time, the stability after assembly is improved.

[0022] Preferably, an unlocking hole 27 is provided above the terminal insertion cavity 21, and a yielding inclined surface 28 is provided at the upper end of the uppermost locking rod 5. An unlocking inclined surface 29 is provided above the positioning port 10. Since this example is a 7-pin structure and is arranged in three columns, the yielding inclined surfaces 28 need to be provided at the upper ends of the uppermost locking rods 5 in each column. When unlocking: unlock the pin terminals 2 one by one from top to bottom. When assembling: insert the pin terminals 2 into the terminal insertion cavities 21 one by one from bottom to top. Since the assembled pin terminals 2 and the locking rods 5 are closely adjacent to each other, the unlocking resistance will be very large. After the above structure is adopted, unlocking the pin terminals 2 one by one from top to bottom makes the unlocking resistance smaller and the unlocking easier. Similarly, inserting the pin terminals 2 into the terminal insertion cavities 21 one by one from bottom to top makes the assembly easier.

[0023] Preferably, a fourth inclined sliding surface 8 is provided at the bottom of the terminal insertion cavity 21, and the fourth inclined sliding surface 8 is in sliding fit with the third inclined sliding surface 14 of the lowermost locking rod 5. The sliding stroke 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 rod 5 below the lowermost pin terminal 2, after the fourth inclined sliding surface 8 is provided, when the pin terminal 2 is pushed backward, it will be lifted, so that the upper locking rod 5 will exert pressure on it, and thus the function of automatic reset can also be achieved.

[0024] Preferably, a first sealing ring 30 and a lining 31 are sequentially provided in the docking cavity 18 of the housing 1, a second sealing ring 32 is provided at the rear end of the installation cavity 19 of the housing 1, an elastic buckle 33 is provided at the front end of the lining 31, a buckle groove 34 for placing the elastic buckle 33 is provided on the housing 1, and a slidable secondary lock 36 is provided at the front end of the buckle groove 34 through a chute 35. The lining 31 is preferably fixed in the docking cavity 18 of the housing 1 by ultrasonic welding to improve the connection stability. After docking with the socket, the elastic buckle 33 is connected to the lock hook on the socket to realize the locking between the plug and the socket. To prevent accidental unlocking of the elastic buckle 33, the secondary lock 36 can be slid backward and abutted against the front end of the elastic buckle 33 for secondary locking. When it is necessary to open the elastic buckle 33, the secondary lock 36 needs to be moved forward first. Thus, the safety and reliability are greatly improved. In addition, since the first sealing ring 30 is provided inside the housing 1, compared with the traditional setting at the mouth of the housing 1, its insertion and extraction resistance is smaller and it is not easy to fall off.

[0025] Preferably, the rubber core 3 is fixed in the housing 1 by ultrasonic welding to improve the strength. In addition, in ultrasonic welding, to achieve a reliable and firm welding holding force and at the same time ensure that the product is flat and does not deform after welding, controllable welding energy and higher precision requirements for the welding height dimension are required, which means that we need more advanced welding settings, but this will undoubtedly increase the production cost. To solve this problem, in the present invention, first welding surfaces 37 are provided at the four corners of the installation cavity 19, second welding surfaces 38 adapted to the first welding surfaces 37 are provided at the four corners of the rubber core 3, welding ribs 39 are provided on the first welding surfaces 37, and a stockpiling groove 41 is provided in front of the second welding surfaces 38. The stockpiling groove 41 serves to stockpile materials and position the rubber core 3. When the welding ribs 39 are melted by welding, they are filled in the stockpiling groove 41, which can improve the holding force and at the same time prevent the deformation of the upper surface of the rubber core and the shrinkage of the hole positions.

[0026] Preferably, a grid groove 40 is provided on the surface of the welding rib 39. During ultrasonic welding, through the grid groove 40, the welding rib 39 can be quickly melted, thereby improving the welding speed.

[0027] As described above, it is not to impose any form of restriction on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the technical solution of the present invention, make some changes or modifications to the equivalent embodiments of equivalent changes by using the disclosed structure and technical content. However, as long as it does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall 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); a locking head (6) is provided at the front end of the locking rod (5); 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); 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).

2. The connector according to claim 1, characterized in that: When the pin terminal (2) is pushed backwards 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 forwards by the locking rod (5).

3. The connector according to claim 1, characterized in that: The housing (1) is provided with a docking cavity (18) at the front end and a mounting cavity (19) at the rear end. A group of longitudinal partition walls (20) are provided in front of the mounting cavity (19). The mounting cavity (19) is divided into a plurality of terminal insertion cavities (21) by the partition walls (20). A group of conical 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 terminal 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 conical positioning portion (24). When the pin terminal (2) is inserted into place, the conical positioning portion (24) is embedded in the conical pin hole (22).

4. The connector according to claim 3, characterized in that: 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).

5. The connector according to claim 3, characterized in that: An unlocking hole (27) is provided above the terminal insertion cavity (21), and a yielding inclined surface (28) is provided at 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 from top to bottom in sequence; when assembling, the pin terminals (2) are inserted into the terminal insertion cavity (21) in sequence from bottom to top.

6. The connector according to claim 3, characterized in that: A fourth inclined sliding surface (8) is provided at the bottom of the terminal insertion cavity (21), and the fourth inclined sliding surface (8) is slidably matched with the third inclined sliding surface (14) of the bottommost locking rod (5).

7. The connector according to claim 3, characterized in that: A first sealing ring (30) and an inner liner (31) are sequentially arranged in the docking cavity (18) of the shell (1), a second sealing ring (32) is arranged at the rear end of the mounting cavity (19) of the shell (1), an elastic buckle (33) is arranged at the front end of the inner liner (31), a buckle groove (34) for accommodating the elastic buckle (33) is arranged on the shell (1), and a slidable secondary lock buckle (36) is arranged at the front end of the buckle groove (34) through a slide groove (35).

8. The connector according to claim 3, characterized in that: The rubber core (3) is fixed inside the outer shell (1) by ultrasonic welding.

9. The connector according to claim 8, characterized in that: 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 surface (37) is provided with welding ribs (39), and a material stacking trough (41) is provided in front of the second welding surface (38).

10. The connector according to claim 9, characterized in that: The surface of the welding rib (39) is provided with a grid groove (40).

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