A detachable connector with a labor-saving mechanism

Abstract

This invention discloses a flexible, easy-to-operate, and stable detachable connector with a labor-saving mechanism. To solve the aforementioned problems, the technical solution adopted by this invention includes: a plug and a socket that fit together; the plug includes a plug housing with a set of female terminals inserted into the plug housing; the socket includes a socket housing with a set of male terminals disposed within the socket housing; a detachable labor-saving mechanism is provided on one side of the plug housing; the labor-saving mechanism includes: a mechanism housing and an assist handle; guide rails on both sides of the mechanism housing and a handle mounting cavity in the middle.

Description

Technical Field

[0001] This invention belongs to the field of connectors, and particularly relates to a connector with a force-saving mechanism. Background Technology

[0002] Automotive wiring harness connectors are crucial components in automotive circuits, used to connect various electrical and electronic parts. Their structure includes a plug and a socket that interlock; the plug includes a female terminal inserted into a plug housing, and the socket includes a male terminal housed within a socket housing. With the rapid development of new energy vehicles, wiring harness connectors are also widely used in these vehicles. Because new energy vehicles have far more power and signal wires than traditional vehicles, the insertion and removal resistance is significant when the connector is fully populated with terminals, making insertion and removal difficult for users. To address this issue, traditionally, a force-saving mechanism is added to the connector. A traditional force-saving mechanism, as shown in Chinese Utility Model Patent No. "CN 221598389 U" entitled "A Connector for an Automotive Domain Controller," assists in insertion and removal between the plug housing and the socket housing by hinged to an external lever. The disadvantages are as follows: 1. The labor-saving mechanism is not detachable. Regardless of whether the connector is fully filled with terminals, the labor-saving mechanism is required for insertion and removal, making it inflexible. 2. A secondary locking device with plug-in type is required to lock the assisted handle after it has been rotated to the correct position. This is inconvenient to operate and easy to forget to lock. 3. The labor-saving mechanism lacks a holding function. After the plug and socket are connected, the stability is poor, and there is a tendency for momentary disconnection between terminals. 4. The terminal anti-reverse clip is a fixed structure. One type of terminal requires a matching terminal anti-reverse clip, resulting in poor applicability. Furthermore, the terminal anti-reverse clip needs to be removed when disassembling and assembling the terminals, which is inconvenient. 5. The clamping piece at the front end of the female terminal has poor fatigue resistance. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a detachable connector with a flexible, easy-to-use, and stable mechanism that saves effort.

[0004] To solve the above problems, the technical solution adopted by the present invention includes: a plug and a socket that fit together, wherein the plug includes a plug housing and a set of female terminals inserted into the plug housing, the socket includes a socket housing and a set of male terminals disposed within the socket housing, and a detachable force-saving mechanism is provided on one side of the plug housing;

[0005] The labor-saving mechanism includes: a mechanism housing and an assist handle. The mechanism housing has guide rails on both sides and a handle mounting cavity in the middle. The inner wall of the handle mounting cavity has a connecting shaft, and both ends have a first locking groove and a first locking rod, respectively. The lower end of the first locking rod has a first upper inclined sliding surface and a first lower inclined sliding surface. The assist handle is installed in the handle mounting cavity. One side of its upper end has an operating handle, the inner wall has a shaft hole connected to the connecting shaft, and both ends have a second locking rod and a toothed lever, respectively. The free end of the second locking rod has a first barb connected to the first locking groove.

[0006] The inner wall of the socket housing is provided with a fulcrum protrusion. One side of the fulcrum protrusion is provided with a toothed lever groove that cooperates with the toothed lever, and the other side is provided with a second upper inclined sliding surface and a second lower inclined sliding surface that cooperates with the first locking rod.

[0007] The outer wall of the plug housing is provided with a first slot and a fixing structure that are adapted to the guide rail;

[0008] When the plug is inserted into the socket through the force-saving mechanism, the first upper inclined sliding surface of the first locking rod presses against the second lower inclined sliding surface of the socket housing, and the first barb is connected to the first locking groove; when the plug is pulled out of the socket through the force-saving mechanism, the first lower inclined sliding surface of the first locking rod presses against the second upper inclined sliding surface of the socket housing.

[0009] The plug housing has detachable latches at both ends via third slots. Each latch includes a base plate and a third locking rod on the base plate. The third locking rod has a second barb. The inner wall of the socket housing has a second locking groove that connects to the second barb.

[0010] The fixing structure includes a third barb on the guide rail, a fourth barb on the side wall of the plug housing, a third locking groove on the first slot connected to the third barb, and a fourth locking groove on the side wall of the mechanism housing connected to the fourth barb.

[0011] The lower end of the shaft hole is provided with a guide groove to allow the connecting shaft to slide into the shaft hole.

[0012] The side wall of the plug housing is connected to a terminal anti-reverse clip via a fourth slot. The terminal anti-reverse clip includes a fixed seat and a movable seat. The movable seat is slidably mounted on the fixed seat, and a first return spring is provided between the two. The movable seat is provided with a set of blocking parts that abut against the rear end of the female terminal. The fixed seat is provided with a fifth barb that is connected to the plug housing.

[0013] The inner wall of the socket housing is provided with a set of protruding ribs, which contact the plug housing.

[0014] The assist handle is provided with a first tapered positioning rib at the opposite end of the operating handle, and the mechanism housing is provided with a second tapered positioning rib that positions and cooperates with the first tapered positioning rib.

[0015] The operating handle is provided with an unlock button, and the unlock button is provided with an unlocking rod that applies pressure to the free end of the second locking rod. A second return spring is provided between the unlock button and the operating handle.

[0016] The female terminal has a corresponding clamping piece at its front end, and the clamping piece is covered with a stainless steel fixing sleeve. The stainless steel fixing sleeve has an outer spring piece that connects to the inner cavity of the plug housing and an inner spring piece that abuts against the clamping piece.

[0017] The front end of the blocking part is provided with an inclined surface.

[0018] The advantages of the detachable connector with labor-saving mechanism of the present invention are as follows: 1. The labor-saving mechanism can be detached as needed and can realize automatic secondary locking and holding of the assist handle to improve the convenience and safety of operation; 2. The terminal anti-reverse clip is a movable structure that can be used for terminals of different specifications, and there is no need to remove the terminal anti-reverse clip when disassembling and assembling the terminals, making the operation more convenient; 3. The clamping piece at the front end of the female terminal has good fatigue resistance.

[0019] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the plug and socket of the present invention;

[0021] Figure 2 This is a schematic diagram of the connection between the plug and the socket of the present invention;

[0022] Figure 3 This is an exploded view of the plug of the present invention;

[0023] Figure 4 This is a cross-sectional view of the socket housing of the present invention;

[0024] Figure 5 This is a cross-sectional view of the housing of the mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the assist handle of the present invention;

[0026] Figure 7 This is a cross-sectional view of the power assist handle of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the plug housing of the present invention;

[0028] Figure 9This is a schematic diagram of the terminal anti-retraction clip of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the female terminal of the present invention;

[0030] Figure 11 This is a schematic diagram of the structure of the female locking latch of the present invention.

[0031] The components include: 1. Plug; 2. Socket; 3. Plug housing; 4. Female terminal; 5. Socket housing; 6. Male terminal; 7. Force-saving mechanism; 8. Mechanism housing; 9. Assist handle; 10. Guide rail; 11. Handle mounting cavity; 12. Connecting shaft; 13. First locking groove; 14. First locking rod; 15. First upper inclined sliding surface; 16. First lower inclined sliding surface; 17. Operating handle; 18. Shaft hole; 19. Second locking rod; 20. Toothed lever; 21. First barb; 22. Pivot protrusion; 23. Toothed lever groove; 24. Second upper inclined sliding surface; 25. Second lower inclined sliding surface; 26. First slot; 27. Third slot; 28. 29. Locking buckle; 30. Base plate; 31. Third locking rod; 32. Second barb; 33. Second locking groove; 34. Third barb; 35. Fourth barb; 36. Third locking groove; 37. Guide groove; 38. Fourth slot; 39. Terminal anti-reverse clip; 40. Fixed base; 41. Movable base; 42. First return spring; 43. Blocking part; 44. Fifth barb; 45. Protruding rib; 46. First tapered positioning rib; 47. Second tapered positioning rib; 48. Unlocking button; 49. Unlocking rod; 50. Second return spring; 51. Clamping piece; 52. Stainless steel fixing sleeve; 53. Outer spring; 54. Inner spring piece; 55. Inclined surface. Detailed Implementation

[0032] Reference Figures 1-11As shown, the detachable connector with a labor-saving mechanism of the present invention includes a plug 1 and a socket 2 for plugging and mating. The plug 1 includes a plug housing 3 into which a set of female terminals 4 are inserted. The socket 2 includes a socket housing 5 into which a set of male terminals 6 are disposed. When the plug 1 is inserted into the socket 2, the female terminals 4 and male terminals 6 are connected. A detachable labor-saving mechanism 7 is provided on one side of the plug housing 3. The labor-saving mechanism 7 includes a mechanism housing 8 and an assist handle 9. The mechanism housing 8 has guide rails 10 on both sides and a handle mounting cavity 11 in the middle. The inner wall of the handle mounting cavity 11 is provided with a connecting shaft 12, and both ends are integrally formed with a first locking groove 13 and a first locking rod 14, respectively. The lower end of the first locking rod 14 is provided with a first upwardly inclined sliding surface 15 and a first downwardly inclined sliding surface 16. The assist handle 9 is installed in the handle mounting cavity 11. An operating handle 17 is provided on one side of the upper end of the assist handle 9. The inner wall of the assist handle 9 has a shaft hole 18 that connects to the connecting shaft 12, and both ends are respectively provided with a second locking rod 19 and a toothed lever 20. A first barb 2 that connects to the first locking groove 13 is provided on the free end of the second locking rod 19.

[0033] The inner wall of the socket housing 5 is provided with a fulcrum protrusion 22. One side of the fulcrum protrusion 22 is provided with a toothed lever groove 23 that cooperates with the toothed lever 20, and the other side is provided with a second upper inclined sliding surface 24 and a second lower inclined sliding surface 25 that cooperates with the first locking rod 14.

[0034] The outer wall of the plug housing 3 is provided with a first slot 26 that adapts to the guide rail 10, and a fixing structure is provided for fixing the mechanism housing 8. During assembly, the guide rail 10 of the force-saving mechanism 7 is aligned with the first slot 26 and inserted, and then fixed by the fixing structure.

[0035] When the plug 1 is inserted into the socket 2 through the force-saving mechanism 7, the first upper inclined sliding surface 15 of the first locking rod 14 presses against the second lower inclined sliding surface 25 of the socket housing 5, making the connection between the two more stable and preventing wobbling. The first barb 21 is connected to the first locking groove 13. When the plug 1 needs to be pulled out, the second locking rod 19 must be opened first, thereby achieving secondary locking and retention between the plug 1 and the socket 2, improving connector safety and preventing wobbling. When the plug 1 is pulled out of the socket 2 through the force-saving mechanism 7, the first lower inclined sliding surface 16 of the first locking rod 14 presses against the second upper inclined sliding surface 24 of the socket housing 5. This allows the plug 1 and the socket 2 to separate quickly and prevents accidental closure.

[0036] Preferably, the plug housing 3 has detachable latches 28 at both ends via third slots 27. Each latch 28 includes a base plate 29 and a third locking rod 30 on the base plate 29. The third locking rod 30 has a second barb 31, and the inner wall of the socket housing 5 has a second locking groove 32 that connects to the second barb 31. When the plug 1 is inserted into the socket 2, the second barb 31 engages with the second locking groove 32 to lock the socket housing 5. When the connector is full of terminals, the insertion and extraction force is too high, so the force-saving mechanism 7 can be added and the latches 28 can be removed. When the connector has few terminals (insertion and extraction force less than 75N), the force-saving mechanism 7 can be removed and the latches 28 can be added.

[0037] Preferably, the fixing structure includes a third barb 33 disposed on the guide rail 10, a fourth barb 34 disposed on the side wall of the plug housing 3, a third locking groove 35 disposed on the first slot 26 and connected to the third barb 33, and a fourth locking groove 36 disposed on the side wall of the mechanism housing 8 and connected to the fourth barb 34. This achieves the fixing between the mechanism housing 8 and the mechanism housing 8.

[0038] Preferably, the lower end of the shaft hole 18 is provided with a guide groove 37 for the connecting shaft 12 to slide into the shaft hole 18. This facilitates the insertion of the mechanism housing 8 into the handle mounting cavity 11.

[0039] Preferably, a terminal anti-reverse clip 39 is inserted into the side wall of the plug housing 3 via a fourth slot 38. The terminal anti-reverse clip 39 includes a fixed base 40 and a movable base 41. The movable base 41 is slidably mounted on the fixed base 40, and a first return spring 42 is provided between the two. The movable base 41 is provided with a set of blocking parts 43 that abut against the rear end of the female terminal 4. The fixed base 40 is provided with a fifth barb 44 that connects to the plug housing 3. Because the movable base has a forward thrust after locking, it can be held more stably at the terminal, preventing the terminal from shaking. In addition, because the movable base has a forward thrust after locking, it is a dynamic lock, which can lock terminals of different specifications, thus improving applicability. The movable base can be compressed and automatically reset. When inserting the terminal later, the movable base only needs to be pushed to one side without removing the terminal anti-reverse clip, making it easier to install and remove the terminal.

[0040] Preferably, the inner wall of the socket housing 5 is provided with a set of protruding ribs 45, which contact the plug housing 3. This is used to reduce the contact area, thereby reducing the insertion and removal resistance.

[0041] Preferably, the assist handle 9 is provided with a first tapered positioning rib 46 at the opposite end to the operating handle 17, and the mechanism housing 8 is provided with a second tapered positioning rib 47 that positions and cooperates with the first tapered positioning rib 46. When the assist handle 9 is rotated to the separation direction, the first tapered positioning rib 46 and the second tapered positioning rib 47 are positioned and cooperated to position the assist handle 9, thereby facilitating subsequent insertion.

[0042] Preferably, the operating handle 17 is provided with an unlocking button 48, and the unlocking button 48 is provided with an unlocking rod 49 that applies pressure to the free end of the second locking rod 19. A second return spring 50 is provided between the unlocking button 48 and the operating handle 17. When the operating handle 17 needs to be rotated, pressing the unlocking button 48 can separate the first barb 21 from the first locking groove 13, thereby making operation easier.

[0043] Preferably, the front end of the female terminal 4 is provided with a corresponding clamping piece 51, and the clamping piece 51 is covered with a stainless steel fixing sleeve 52. The stainless steel fixing sleeve 52 is provided with an outer spring piece 53 that connects to the inner cavity of the plug housing 3 and an inner spring piece 54 that abuts against the clamping piece 51. The inner spring piece 54 can greatly improve the elasticity and fatigue resistance of the clamping piece 51.

[0044] Preferably, the front end of the blocking part 43 is provided with an inclined surface 55 to facilitate pushing the movable seat to one side.

[0045] As stated above, this is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A detachable connector with a labor-saving mechanism, comprising a plug (1) and a socket (2) for mating, wherein the plug (1) includes a plug housing (3) and a set of female terminals (4) inserted into the plug housing (3), and the socket (2) includes a socket housing (5) and a set of male terminals (6) disposed within the socket housing (5), characterized in that: The plug housing (3) is provided with a detachable labor-saving mechanism (7) on one side. The labor-saving mechanism (7) includes: a mechanism housing (8) and an assist handle (9). The mechanism housing (8) has guide rails (10) on both sides and a handle mounting cavity (11) in the middle. The handle mounting cavity (11) has a connecting shaft (12) on its inner wall and a first locking groove (13) and a first locking rod (14) at both ends. The first locking rod (14) has a first upper inclined sliding surface (15) and a first lower inclined sliding surface (16) at its lower end. The assist handle (9) is installed in the handle mounting cavity (11). It has an operating handle (17) on one side of its upper end, a shaft hole (18) connected to the connecting shaft (12) on its inner wall, and a second locking rod (19) and a toothed lever (20) at both ends. The free end of the second locking rod (19) has a first barb (21) connected to the first locking groove (13). The inner wall of the socket housing (5) is provided with a fulcrum protrusion (22). The fulcrum protrusion (22) has a toothed lever groove (23) on one side that cooperates with the toothed lever (20), and a second upper inclined sliding surface (24) and a second lower inclined sliding surface (25) that cooperate with the first locking rod (14) on the other side. The outer wall of the plug housing (3) is provided with a first slot (26) and a fixing structure that are adapted to the guide rail (10); When the plug (1) is inserted into the socket (2) through the force-saving mechanism (7), the first upper inclined sliding surface (15) of the first locking rod (14) presses against the second lower inclined sliding surface (25) of the socket housing (5), and the first barb (21) is connected to the first locking groove (13); when the plug (1) is pulled out of the socket (2) through the force-saving mechanism (7), the first lower inclined sliding surface (16) of the first locking rod (14) presses against the second upper inclined sliding surface (24) of the socket housing (5).

2. The detachable connector for the labor-saving mechanism according to claim 1, characterized in that: The plug housing (3) has detachable latches (28) at both ends via a third slot (27). The latches (28) include a base plate (29) and a third locking rod (30) on the base plate (29). The third locking rod (30) has a second barb (31). The inner wall of the socket housing (5) has a second locking groove (32) that connects to the second barb (31).

3. The detachable connector for the labor-saving mechanism according to claim 1, characterized in that: The fixing structure includes a third barb (33) disposed on the guide rail (10), a fourth barb (34) disposed on the side wall of the plug housing (3), a third locking groove (35) disposed on the first slot (26) and connected to the third barb (33), and a fourth locking groove (36) disposed on the side wall of the mechanism housing (8) and connected to the fourth barb (34).

4. The detachable connector for the labor-saving mechanism according to claim 1, characterized in that: The lower end of the shaft hole (18) is provided with a guide groove (37) for the connecting shaft (12) to slide into the shaft hole (18).

5. The detachable connector for the labor-saving mechanism according to claim 1, characterized in that: The side wall of the plug housing (3) is connected to a terminal anti-reverse clip (39) through a fourth slot (38). The terminal anti-reverse clip (39) includes a fixed seat (40) and a movable seat (41). The movable seat (41) is slidably mounted on the fixed seat (40), and a first return spring (42) is provided between the two. The movable seat (41) is provided with a set of blocking parts (43) that abut against the rear end of the female terminal (4). The fixed seat (40) is provided with a fifth barb (44) that is connected to the plug housing (3).

6. The detachable connector for the labor-saving mechanism according to claim 1, characterized in that: The inner wall of the socket housing (5) is provided with a set of protruding ribs (45), which contact the plug housing (3) through the protruding ribs (45).

7. The detachable connector for the labor-saving mechanism according to claim 1, characterized in that: The assist handle (9) is provided with a first conical positioning rib (46) at the opposite end of the operating handle (17), and the mechanism housing (8) is provided with a second conical positioning rib (47) that positions and cooperates with the first conical positioning rib (46).

8. The detachable connector for the labor-saving mechanism according to claim 1, characterized in that: The operating handle (17) is provided with an unlock button (48), the unlock button (48) is provided with an unlock rod (49) that applies pressure to the free end of the second locking rod (19), and a second return spring (50) is provided between the unlock button (48) and the operating handle (17).

9. The detachable connector for the labor-saving mechanism according to claim 1, characterized in that: The front end of the female terminal (4) is provided with a corresponding clamping piece (51), and the clamping piece (51) is covered with a stainless steel fixing sleeve (52). The stainless steel fixing sleeve (52) is provided with an outer spring piece (53) connected to the inner cavity of the plug housing (3) and an inner spring piece (54) abutting against the clamping piece (51).

10. The detachable connector for the labor-saving mechanism according to claim 5, characterized in that: The front end of the blocking part (43) is provided with an inclined surface (55).

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