A waterproof connector

Abstract

The invention discloses a waterproof connector. The technical solution employed includes: a socket housing, a socket core disposed within the socket housing, a group of connection terminals disposed within terminal insertion holes of the socket core, and a terminal locking member for locking the connection terminals. The terminal locking member comprises a pair of parallel locking rods, at least one of which has a first inclined sliding surface and a second inclined sliding surface disposed at an angle at its front end. One side of the locking rod is provided with a pair of first arc-shaped positioning holes, and the lower end is provided with a sliding track and a locking pin. Advantages of the connector include: after locking, the locking rod still has a forward thrust, thereby more stably retaining the connection terminal and preventing the connection terminal from shaking.

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 circuitry. Their primary function is to connect in-vehicle electronic components, ECUs (electronic control units), sensors, actuators, and other electrical and electronic devices, ensuring power and signal transmission. Wiring harness connectors consist of a plug and a socket. The pin terminals on the plug must be inserted into the socket terminals in the socket to complete the connection. To prevent the terminals from falling out of the housing, terminal locks are typically installed inside the housing to lock the terminals. Drawbacks of traditional automotive wiring harness connectors include: 1. The retention force between the terminal locks and the terminals is poor, resulting in the terminals still wobbling even after locking; 2. Each terminal size requires a specific terminal lock, resulting in poor compatibility; 3. The terminal locks lack automatic reset and positioning functions, making assembly inconvenient and prone to falling out; and 4. Poor waterproofing. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a waterproof connector with good holding force, wide application range and convenient assembly.

[0004] To solve the above problems, the technical solution adopted by the present invention includes: a socket housing, a socket rubber core arranged in the socket housing, a group of wiring terminals arranged in the terminal insertion holes of the socket rubber core, and a terminal locking member for locking the wiring terminals, the terminal locking member includes a group of locking rods arranged in parallel, and at least one of the locking rods has a first inclined sliding surface and a second inclined sliding surface arranged at an angle at the front end, a group of first arc-shaped positioning holes is provided on one side of the locking rod, and a sliding track and a locking pin is provided at the lower end; a track groove that slidably cooperates with the sliding track and a second arc-shaped positioning hole corresponding to the first arc-shaped positioning hole is provided above the terminal insertion hole of the socket rubber core, at least one of the track grooves has an elastic rod provided at the front end, and the elastic rod has a third inclined sliding surface and a fourth inclined sliding surface arranged at an angle at the front end;

[0005] When the locking rod is moved forward and is in a locked state, the fourth inclined sliding surface applies pressure to the first inclined sliding surface, and the locking rod remains in a forward moving state; when the locking rod is moved backward and is in an unlocked state, the third inclined sliding surface applies pressure to the second inclined sliding surface, and the locking rod remains in a stationary state.

[0006] The front end of the terminal block is covered with a square positioning sleeve, the front end of the square positioning sleeve is provided with a conical positioning surface, the rear end is provided with a positioning step, the side is provided with an elastic buckle and an anti-mistake edge, the terminal block is provided with a positioning wing corresponding to the positioning step, the lower ends of the first arc-shaped positioning hole and the second arc-shaped positioning hole are provided with a first guide slope, the locking pin is provided with a fifth inclined sliding surface, and the terminal plug-in hole is provided with a retreat stop that cooperates with the elastic buckle and an anti-mistake groove that cooperates with the anti-mistake edge.

[0007] A boss is integrally formed in the socket shell, and a terminal insertion hole corresponding to the terminal insertion hole is provided in the boss, a hanging groove is provided at the front end, and a first sealing ring is provided at the rear end. The socket rubber core is hung in the hanging groove through the first hook at the rear end, and the end face is squeezed by the first sealing ring.

[0008] A cable sealing plug is provided in the terminal insertion hole, a front end of the cable sealing plug is provided with an annular wrapping groove, a side wall is provided with a group of sealing skirts, and a rear end of the terminal is provided with a wrapping foot wrapped in the annular wrapping groove.

[0009] The locking rod is provided with connecting walls at the front and rear ends, and a push plate is provided on the connecting wall at the rear end, the side of the socket rubber core is provided with a push plate accommodating cavity adapted to the push plate, positioning slide grooves are provided on both sides of the upper end of the push plate, the front end of the socket rubber core is provided with a second hook connected to the connecting wall, the upper end of the push plate accommodating cavity is provided with a third hook connected to the positioning slide groove through an elastic wall, and the socket shell is provided with an operating window corresponding to the push plate.

[0010] Assist springs are provided on both sides of the connecting wall at the rear end of the locking rod, and the locking rod is driven to move forward by the assist springs.

[0011] An unlocking opening is provided at the front end of the socket rubber core corresponding to the elastic buckle position.

[0012] An unlocking mechanism is provided in the unlocking port, and the unlocking mechanism includes an unlocking slider, an unlocking rod provided at the front end of the unlocking slider, a second sealing ring provided on the side wall of the unlocking slider, and a reset spring for driving the unlocking rod to reset. The unlocking slider is slidably provided in the unlocking port and is sealed by the second sealing ring.

[0013] The side wall of the sliding track is provided with a sliding rib, which is slidably matched with the track groove through the sliding rib.

[0014] A second guiding inclined surface is provided on the upper end of the third inclined sliding surface.

[0015] The advantages of the connector of the present invention are as follows: 1. Since the locking rod has a forward thrust after being locked, it can be more stably held on the terminal and prevent the terminal from shaking; 2. Since the locking rod has a forward thrust after being locked, it is a dynamic lock, which can lock terminals of different specifications and has better applicability; 3. The terminal locking piece has an automatic reset function and a positioning function, which makes it easier to disassemble and assemble the terminal, and the terminal locking piece is not easy to fall off; 4. The waterproof performance is good.

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

[0017] Figure 1 It is a schematic structural diagram of the waterproof connector of the present invention;

[0018] Figure 2 is an exploded view of the waterproof connector of the present invention;

[0019] Figure 3 is a cross-sectional view of the waterproof connector of the present invention;

[0020] Figure 4 It is a schematic diagram of the assembly between the socket rubber core and the terminal locking member of the present invention;

[0021] Figure 5 It is a structural diagram of the socket rubber core of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the terminal locking member of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the wiring terminal of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the cable sealing plug of the present invention;

[0025] Figure 9 is a cross-sectional view of the socket housing of the present invention;

[0026] Figure 10 yes Figure 3 A partial enlarged view of

[0027] Figure 11 It is a schematic diagram of the locked state of the waterproof connector of the present invention.

[0028] Wherein: 1. Socket housing; 2. Socket core; 3. Terminal insertion hole; 4. Terminal; 5. Terminal locking member; 6. Locking rod; 7. First inclined sliding surface; 8. Second inclined sliding surface; 9. First arc-shaped positioning hole; 10. Sliding track; 11. Locking pin; 12. Track groove; 13. Second arc-shaped positioning hole; 14. Elastic rod; 15. Third inclined sliding surface; 16. Fourth inclined sliding surface; 17. Square positioning sleeve; 18. Conical positioning surface; 19. Positioning step; 20. Elastic buckle; 21. Anti-study edge; 22. Positioning wing; 23. First guide slope; 24. Fifth inclined sliding surface; 25. Retraction stopper; 26. , anti-mistake groove; 27, boss; 28, terminal loading hole; 29, hanging groove; 30, first sealing ring; 31, first hook; 32, cable sealing plug; 33, annular wrapping groove; 34, sealing skirt; 35, wrapping foot; 36, connecting wall; 37, push plate; 38, push plate accommodating cavity; 39, positioning slide; 40, second hook; 41, elastic wall; 42, third hook; 43, operating window; 44, power assist spring; 45, unlocking port; 46, unlocking mechanism; 47, unlocking slider; 48, unlocking rod; 49, second sealing ring; 50, reset spring; 51, sliding rib; 52, second guide slope; 53, press line foot. DETAILED DESCRIPTION

[0029] Reference Figures 1-11 As shown, the waterproof connector of the present invention includes a socket housing 1, a socket core 2 disposed within the socket housing 1, a group of wiring terminals 4 disposed within the terminal insertion holes 3 of the socket core 2, and a terminal locking member 5 for locking the wiring terminals 4. The terminal locking member 5 includes a group of parallel locking rods 6, one of which has a first inclined sliding surface 7 and a second inclined sliding surface 8 disposed at an angle at its front end. A group of first arc-shaped positioning holes 9 are disposed on one side of the locking rod 6, and a sliding track 10 and a locking pin 11 are disposed at the lower end of the locking rod 6. To ensure the sliding stability of the terminal locking member 5, the first inclined sliding surface 7 and the second inclined sliding surface 8 are typically disposed at the front end of the middle locking rod 6. Above the terminal insertion hole 3 of the receptacle core 2, there are provided a track groove 12 that slidably engages with the sliding track 10, and a second arcuate positioning hole 13 corresponding to the first arcuate positioning hole 9. A spring rod 14 is provided at the front end of one of the track grooves 12, and a third inclined sliding surface 15 and a fourth inclined sliding surface 16 are provided at an angle to each other. The first arcuate positioning hole 9 and the second arcuate positioning hole 13 form a complete circular positioning hole, allowing the terminal 4 to be precisely inserted into the terminal insertion hole 3. The angle between the first and second inclined sliding surfaces 7 and 8, as well as the angle between the third and fourth inclined sliding surfaces 15 and 16, is ideally 45 degrees to facilitate the movement of the terminal locking member 5.

[0030] When the locking rod 6 is moved forward and locked, the fourth inclined sliding surface 16 applies pressure to the first inclined sliding surface 7, keeping the locking rod 6 in the forward position. When the locking rod 6 is moved backward and unlocked, the third inclined sliding surface 15 applies pressure to the second inclined sliding surface 8, keeping the locking rod 6 in a stationary position. To insert the terminal 4, the locking rod 6 is first moved forward to the locked position, and then the terminal 4 is inserted between the first and second arcuate positioning holes 9 and 13. During insertion, the head of the terminal 4 pushes the locking rod 6 toward the unlocking side until the head fully enters the terminal insertion hole 3. At this point, the locking rod 6 automatically moves forward under the pressure of the elastic rod 14, causing the locking pin 11 to abut against the back of the head of the terminal 4, achieving locking. When the connecting terminal 4 is to be taken out, the locking rod 6 can be first moved backward to the unlocked state so that the locking rod 6 remains in a stationary state, thereby facilitating the removal of the connecting terminal 4 .

[0031] Preferably, the front end of the terminal block 4 is covered with a square positioning sleeve 17, and the front end of the square positioning sleeve 17 is provided with a conical positioning surface 18, the rear end is provided with a positioning step 19, and the side is provided with an elastic buckle 20 and an anti-fool edge 21. After locking, the locking pin 11 abuts against the positioning step 19. The terminal block 4 is provided with a positioning wing 22 corresponding to the positioning step 19, and the positioning wing 22 abuts against the locking pin 11. The lower ends of the first arc-shaped positioning hole 9 and the second arc-shaped positioning hole 13 are provided with a first guide slope 23. The locking pin 11 is provided with a fifth inclined sliding surface 24, and the terminal plug-in hole 3 is provided with a retreat stop 25 that cooperates with the elastic buckle 20 and an anti-fool groove 26 that cooperates with the anti-fool edge 21. Through the above structure, the terminal block 4 can be installed more accurately and stably. Among them, through the cooperation of the conical positioning surface 18 and the first guide slope 23, the terminal 4 can be smoothly and accurately installed into the terminal plug-in hole 3; through the positioning of the positioning step 19 and the positioning wing 22, the locking pin 11 can more stably lock the terminal 4; through the cooperation of the elastic buckle 20 and the anti-retraction clamp 25, the terminal 4 is more stably fixed in the terminal plug-in hole 3; through the cooperation of the fifth inclined sliding surface 24 and the conical positioning surface 18, the terminal 4 can be more easily squeezed open the terminal locking piece 5; through the cooperation of the anti-mistake edge 21 and the anti-mistake groove 26, the terminal 4 can be prevented from being installed in the reverse direction.

[0032] Preferably, a boss 27 is integrally formed within the socket housing 1. This boss 27 defines a terminal insertion hole 28 corresponding to the terminal insertion hole 3. The connection terminal 4 is inserted into the terminal insertion hole 3 through the terminal insertion hole 28. A hanging groove 29 is defined at the front end of the boss 27, and a first sealing ring 30 is provided at the rear end. The socket rubber core 2 is hooked to the hanging groove 29 via a first hook 31 at the rear end, with its end face pressed against the first sealing ring 30. During assembly, the socket rubber core 2 is simply pressed firmly into the socket housing 1, achieving a seal.

[0033] Preferably, a cable sealing plug 32 is provided within the terminal insertion hole 28. The front end of the cable sealing plug 32 is provided with an annular wrapping groove 33, and the side walls of the cable sealing plug 32 are provided with a set of sealing skirts 34. The rear end of the terminal 4 is provided with wrapping feet 35 that wrap around the annular wrapping groove 33. During assembly, the cable is first passed through the cable sealing plug 32, and the conductor is crimped onto the crimping feet 53 of the terminal 4. The wrapping feet 35 of the terminal 4 are then wrapped around the annular wrapping groove 33 of the cable sealing plug 32. This forms an assembly of the terminal 4, cable sealing plug 32, and cable, facilitating assembly. The provision of the sealing skirts 34 on the side walls of the cable sealing plug 32 significantly enhances the sealing effect.

[0034] Preferably, the locking rod 6 is provided with connecting walls 36 at both ends, and a push plate 37 is provided on the connecting wall 36 at the rear end. A push plate accommodating cavity 38 corresponding to the push plate 37 is provided on the side of the socket core 2. Positioning grooves 39 are provided on both sides of the upper end of the push plate 37. A second hook 40 is provided at the front end of the socket core 2, connected to the connecting wall 36. A third hook 42 is provided at the upper end of the push plate accommodating cavity 38, connected to the positioning groove 39 via an elastic wall 41. An operating window 43 is provided on the socket housing 1 corresponding to the push plate 37. During assembly, the locking rod 6 is simply pressed into the track groove 12 from above the socket core 2, making installation very convenient and simultaneously positioning the locking rod 6. Most importantly, by installing from the top down, the elastic rod 14 is pressed toward one side, so that after assembly, the elastic rod 14 exerts reverse pressure, driving the locking rod 6 to slide.

[0035] Preferably, booster springs 44 are provided on both sides of the connecting wall 36 at the rear end of the locking lever 6. These booster springs 44 drive the locking lever 6 forward, thereby enhancing the reset capability of the locking lever 6. Note: In the unlocked state, the elastic force of the booster spring 44 should be less than the resistance of the elastic rod 14.

[0036] Preferably, an unlocking opening 45 is provided at the front end of the socket core 2 at a position corresponding to the elastic clip 20. To unlock, the elastic rod 14 is first slid to the unlocking state, and then the rod is inserted into the unlocking opening 45 to move the elastic clip 20 from the retaining bracket 25, thereby allowing the terminal 4 to be removed.

[0037] Preferably, an unlocking mechanism 46 is provided in the unlocking opening 45. The unlocking mechanism 46 includes an unlocking slider 47, an unlocking rod 48 provided at the front end of the unlocking slider 47, a second sealing ring 49 provided on the side wall of the unlocking slider 47, and a return spring 50 for returning the unlocking rod 48. The unlocking slider 47 is slidably provided in the unlocking opening 45 and is sealed by the second sealing ring 49. Unlocking can be achieved by pressing the unlocking slider 47, which facilitates unlocking and improves sealing.

[0038] Preferably, the side wall of the sliding track 10 is provided with a sliding rib 51 , which is slidably engaged with the track groove 12 to improve the sliding resistance of the sliding track 10 .

[0039] Preferably, a second guiding inclined surface 52 is provided on the upper end of the third inclined sliding surface 15. Through the cooperation between the second guiding inclined surface 52 and the tapered positioning surface 18, the locking rod 6 can be pushed to one side more easily.

[0040] 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 waterproof connector, comprising a socket housing (1), a socket rubber core (2) arranged in the socket housing (1), a group of connection terminals (4) arranged in terminal insertion holes (3) of the socket rubber core (2), and a terminal locking member (5) for locking the connection terminals (4), characterized in that: The terminal locking member (5) comprises a group of locking rods (6) arranged in parallel, and at least one of the locking rods (6) has a first inclined sliding surface (7) and a second inclined sliding surface (8) arranged at an angle at its front end, a group of first arc-shaped positioning holes (9) are provided on one side of the locking rod (6), and a sliding track (10) and a locking pin (11) are provided at the lower end; a track groove (12) slidingly matched with the sliding track (10) and a second arc-shaped positioning hole (13) corresponding to the first arc-shaped positioning hole (9) are provided above the terminal plug-in hole (3) of the socket rubber core (2), at least one of the track grooves (12) has an elastic rod (14) at its front end, and the elastic rod (14) has a third inclined sliding surface (15) and a fourth inclined sliding surface (16) arranged at an angle at its front end; When the locking rod (6) is moved forward and is in a locked state, the fourth inclined sliding surface (16) applies pressure to the first inclined sliding surface (7) and keeps the locking rod (6) in a forward moving state; when the locking rod (6) is moved backward and is in an unlocked state, the third inclined sliding surface (15) applies pressure to the second inclined sliding surface (8) and keeps the locking rod (6) in a stationary state.

2. The waterproof connector according to claim 1, characterized in that: The front end of the terminal block (4) is covered with a square positioning sleeve (17), the front end of the square positioning sleeve (17) is provided with a conical positioning surface (18), the rear end is provided with a positioning step (19), the side is provided with an elastic buckle (20) and an anti-misalignment edge (21), the terminal block (4) is provided with a positioning wing (22) corresponding to the positioning step (19), the lower ends of the first arc-shaped positioning hole (9) and the second arc-shaped positioning hole (13) are provided with a first guiding inclined surface (23), the locking pin (11) is provided with a fifth inclined sliding surface (24), and the terminal plug-in hole (3) is provided with a stopper (25) cooperating with the elastic buckle (20) and an anti-misalignment groove (26) cooperating with the anti-misalignment edge (21).

3. The waterproof connector according to claim 1, wherein: A boss (27) is integrally formed in the socket housing (1), a terminal insertion hole (28) corresponding to the terminal insertion hole (3) is provided in the boss (27), a hanging groove (29) is provided at the front end, and a first sealing ring (30) is provided at the rear end. The socket rubber core (2) is hung on the hanging groove (29) via a first hook (31) at the rear end, and the end face is pressed against the first sealing ring (30).

4. The waterproof connector according to claim 3, characterized in that: A cable sealing plug (32) is provided in the terminal insertion hole (28), a front end of the cable sealing plug (32) is provided with an annular wrapping groove (33), and a side wall is provided with a group of sealing skirts (34), and a rear end of the wiring terminal (4) is provided with a wrapping foot (35) wrapped in the annular wrapping groove (33).

5. The waterproof connector according to claim 1, wherein: The locking rod (6) is provided with connecting walls (36) at both ends, and a push plate (37) is provided on the connecting wall (36) at the rear end. The side of the socket rubber core (2) is provided with a push plate accommodating cavity (38) adapted to the push plate (37). Positioning slots (39) are provided on both sides of the upper end of the push plate (37). The front end of the socket rubber core (2) is provided with a second hook (40) connected to the connecting wall (36). The upper end of the push plate accommodating cavity (38) is provided with a third hook (42) connected to the positioning slot (39) through an elastic wall (41). The socket housing (1) is provided with an operating window (43) corresponding to the push plate (37).

6. The waterproof connector according to claim 5, characterized in that: Assist springs (44) are provided on both sides of the connecting wall (36) at the rear end of the locking rod (6), and the locking rod (6) is driven to move forward by the assist springs (44).

7. The waterproof connector according to claim 2, characterized in that: An unlocking opening (45) is provided at the front end of the socket rubber core (2) at a position corresponding to the elastic buckle (20).

8. The waterproof connector according to claim 7, characterized in that: An unlocking mechanism (46) is provided in the unlocking opening (45), and the unlocking mechanism (46) includes an unlocking slider (47), an unlocking rod (48) provided at the front end of the unlocking slider (47), a second sealing ring (49) provided on the side wall of the unlocking slider (47), and a reset spring (50) for driving the unlocking rod (48) to reset. The unlocking slider (47) is slidably provided in the unlocking opening (45) and is sealed by the second sealing ring (49).

9. The waterproof connector according to claim 1, characterized in that: The side wall of the sliding track (10) is provided with a sliding rib (51), which is slidably engaged with the track groove (12) through the sliding rib (51).

10. The waterproof connector according to claim 5, characterized in that: A second guiding inclined surface (52) is provided at the upper end of the third inclined sliding surface (15).

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