A car wire harness connector anti-misplug locking mechanism
Through the coordinated design of support blocks, connecting plates, mounting blocks, sliders, locking blocks, guide rods, springs, and push plates, the problem of easy loosening of automotive wiring harness connector plugs and sockets is solved, achieving automatic locking and preventing mis-insertion, thus improving the safety and convenience of the connection.
Patent Information
- Application Number
- CN202521386685.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-03
AI Technical Summary
Existing automotive wiring harness connector plugs and sockets are prone to loosening due to accidental contact, resulting in insufficient reliability.
The design employs a collaborative approach involving support blocks, connecting plates, mounting blocks, sliders, locking blocks, slots, guide rods, springs, and push plates to achieve automatic locking of the plug and socket. Furthermore, the use of positioning rods and positioning slots prevents mis-insertion and ensures accurate connection between the plug and socket.
It enables quick plug-in locking and easy unlocking of plugs and sockets, avoiding mis-plugging and mis-locking, and improving the safety and convenience of the connection.
Smart Images

Figure CN224683524U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of connectors, in particular to an anti-misinsertion locking mechanism for an automotive wire harness connector. Background Technique
[0002] An automotive wire harness connector is a core component used to connect different wire harnesses or electrical devices in an automotive circuit. It consists of a plug (male end) and a socket (female end), and realizes the transmission of current or signals through terminals. It has characteristics such as insulation, high temperature resistance, and anti-vibration, and is widely used in fields such as power systems, chassis control, and body electronics to ensure the stable transmission of electricity and signals between various components of the vehicle. Modern connectors also integrate functions such as anti-misinsertion, waterproofing, and dustproofing to improve the safety and reliability of the whole vehicle.
[0003] Currently, after the plug (male end) of an automotive wire harness connector is inserted into the socket (female end), it is generally locked by a buckle. However, it is easy to be unlocked after accidental contact, resulting in loosening of the connector, and its reliability needs to be improved. Content of the Utility Model
[0004] The purpose of the utility model is to solve the problems raised in the above background technique, and to propose an anti-misinsertion locking mechanism for an automotive wire harness connector.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: An anti-misinsertion locking mechanism for an automotive wire harness connector, including a socket body and a plug body arranged at its right end. The left end of the plug body is slidably inserted into the socket body. A horizontally arranged positioning groove is provided at the right end of the socket body and near the bottom position. A horizontally arranged positioning rod is slidably inserted into the inner side wall of the positioning groove. The right end of the positioning rod penetrates through the positioning groove and is fixedly connected to the plug body. A support block is fixedly connected to the upper end of the socket body. A horizontally arranged connecting plate is fixedly connected to the right end of the support block. An installation block is fixedly connected to the upper end of the plug body. A chute is provided at the lower end of the installation block. An opening corresponding to the connecting plate is provided at the left end of the installation block. The right end of the connecting plate slidably penetrates through the opening and extends into the chute. Three longitudinally arranged sliders are slidably connected to the inner side wall of the chute. A wedge-shaped block is fixedly connected to the upper end of the slider. A card slot corresponding to the block is provided at the lower end of the connecting plate. The upper end of the block slidably extends into the card slot. A plurality of vertically arranged guide rods are slidably inserted into the lower end of the slider. The lower end of the guide rod is fixedly connected to the upper end of the plug body. A spring is slidably sleeved on the guide rod. The two ends of the spring are respectively fixedly connected to the lower end of the slider and the upper end of the plug body. A vertically arranged push column is fixedly connected to the upper end of the slider and near the right side edge. The upper end of the push column slidably penetrates through the installation block and is fixedly connected to a horizontally arranged push plate.
[0006] Preferably, fixing blocks are fixedly connected to both the upper and lower sides of the connecting plate, and the end of the fixing block away from the mounting block is fixedly connected to the support block.
[0007] Preferably, both ends of the slider are provided with arc-shaped grooves, and ball bearings are rolled on the inner sidewall of the arc-shaped grooves, with a portion of the ball bearings penetrating through the arc-shaped grooves.
[0008] Preferably, a first rubber pad is fixedly connected to the side of the plug body near the positioning rod.
[0009] Preferably, a second rubber pad is fixedly connected to the upper end of the push plate.
[0010] Preferably, the end of the positioning rod away from the plug body is tapered.
[0011] Compared with the prior art, the present invention has the following beneficial effects: This utility model achieves an automatic locking function after the plug and socket are connected by a support block, connecting plate, mounting block, slider, locking block, locking groove, guide rod, spring, push column and push plate, and provides a convenient unlocking method when they are separated, which significantly improves the convenience of use. This utility model adopts a three-push plate design, which must be pressed simultaneously to complete the unlocking operation, effectively avoiding accidental unlocking caused by accidental touch; at the same time, through the cooperation of the positioning rod and positioning groove, it can completely prevent the plug and socket from being mis-inserted, thus improving the safety of the connection. This utility model, through the setting of positioning rods and push pins, enables quick plug-in and socket locking and unlocking, while preventing mis-plugging and mis-locking, thus improving safety and convenience. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of an anti-misinsertion locking mechanism for an automotive wiring harness connector proposed in this utility model; Figure 2 This is a partially enlarged structural diagram of the mounting block of the anti-misinsertion locking mechanism for automotive wiring harness connectors proposed in this utility model; Figure 3 This is a side sectional view of the mounting block structure of the anti-misinsertion locking mechanism for automotive wiring harness connectors proposed in this utility model.
[0013] In the diagram: 1-Socket body, 2-Plug body, 3-Positioning rod, 4-First rubber pad, 5-Support block, 6-Fixing block, 7-Connecting plate, 8-Mounting block, 9-Push post, 10-Push plate, 11-Second rubber pad, 12-Slider, 13-Clocking block, 14-Guide rod, 15-Spring. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0015] Reference Figure 1-3 An anti-misinsertion locking mechanism for an automotive wiring harness connector includes a socket body 1 and a plug body 2 disposed at its right end. The left end of the plug body 2 is slidably inserted into the socket body 1. A horizontally arranged positioning groove is provided at the right end of the socket body 1 near the bottom. A horizontally arranged positioning rod 3 is slidably inserted into the inner wall of the positioning groove to cooperate with the positioning groove to achieve the anti-misinsertion function. The right end of the positioning rod 3 passes through the positioning groove and is fixedly connected to the plug body 2. The end of the positioning rod 3 away from the plug body 2 is tapered to facilitate the insertion of the positioning rod 3 into the positioning groove. A first rubber pad 4 is fixedly connected to the side of the plug body 2 near the positioning rod 3 to improve the sealing between the plug body 2 and the socket body 1. In this embodiment, a support block 5 is fixedly connected to the upper end of the socket body 1 to support the connecting plate 7. A horizontally arranged connecting plate 7 is fixedly connected to the right end of the support block 5 to cooperate with the slot and the slot 13 to prevent the plug body 2 from loosening from the socket body 1. An installation block 8 is fixedly connected to the upper end of the plug body 2 to install the slider 12. A sliding groove is provided at the lower end of the installation block 8. An opening corresponding to the connecting plate 7 is provided at the left end of the installation block 8. The right end of the connecting plate 7 slides through the opening and extends into the sliding groove. Fixing blocks 6 are fixedly connected to both the upper and lower sides of the connecting plate 7 to support the connecting plate 7. The end of the fixing block 6 away from the installation block 8 is fixedly connected to the support block 5. In this embodiment, three longitudinally arranged sliders 12 are slidably connected to the inner wall of the slide groove to support the locking block 13. Both ends of the slider 12 are provided with arc-shaped grooves, and the inner wall of the arc-shaped grooves is rolled with balls to reduce the resistance when the slider 12 moves. The balls pass through the arc-shaped grooves. The upper end of the slider 12 is fixedly connected with a wedge-shaped locking block 13 to lock the position of the connecting plate 7 in cooperation with the locking slot. The lower end of the connecting plate 7 is provided with a locking slot corresponding to the locking block 13, and the upper end of the locking block 13 slides into the locking slot. In this embodiment, a plurality of vertically arranged guide rods 14 are slidably inserted into the lower end of the slider 12 to guide the slider 12. The lower end of the guide rod 14 is fixedly connected to the upper end of the plug body 2. A spring 15 is slidably sleeved on the guide rod 14 to provide elastic support for the slider 12. The two ends of the spring 15 are fixedly connected to the lower end of the slider 12 and the upper end of the plug body 2, respectively. A vertically arranged push post 9 is fixedly connected to the upper end of the slider 12 and near the right edge to drive the slider 12 to move. The upper end of the push post 9 slides through the mounting block 8 and is fixedly connected to a horizontally arranged push plate 10 to drive the push post 9 to move. A second rubber pad 11 is fixedly connected to the upper end of the push plate 10 to improve the wear resistance of the push plate 10.
[0016] In this embodiment, the plug body 2 is first inserted into the socket body 1. Due to the design of the positioning rod 3 and the positioning groove, the insertion operation can only be completed when the positioning rod 3 is accurately aligned with the positioning groove, thus effectively preventing misinsertion. During the insertion of the plug body 2 into the socket body 1, the positioning rod 3 will insert into the positioning groove. At the same time, the connecting plate 7 will enter the opening along with the plug and extend into the slide groove. Its right end will contact the wedge-shaped surface of the locking block 13 and generate a pushing force, causing the locking block 13 to move downward. When the plug body 2 is fully inserted, the connecting plate 7 stops moving. At this time, the elasticity of the spring 15 will cause the slider 12 to move upward and reset, thereby driving the locking block 13 to move upward and lock into the slot, thus locking the position of the connecting plate 7 and ensuring that the plug body 2 and the socket body 1 are firmly connected and preventing loosening. This design realizes the automatic locking function after insertion. When separation is required, simply press down on the three push plates 10 at the same time. The push post 9 will drive the slider 12 and the locking block 13 to move downward, causing the locking block 13 to disengage from the slot, thereby unlocking the connecting plate 7 and pulling out the plug body 2. The specially designed three push plates 10 require simultaneous operation to unlock, effectively avoiding accidental unlocking caused by accidental touch, and significantly improving the safety and reliability of use.
[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A locking mechanism for preventing mis-insertion of an automotive wiring harness connector, comprising a socket body (1) and a plug body (2) disposed at its right end, characterized in that: The left end of the plug body (2) is slidably inserted into the socket body (1). A horizontally positioned positioning groove is provided on the right end of the socket body (1) near the bottom. A horizontally positioned positioning rod (3) is slidably inserted into the inner wall of the positioning groove. The right end of the positioning rod (3) passes through the positioning groove and is fixedly connected to the plug body (2). A support block (5) is fixedly connected to the upper end of the socket body (1). A horizontally positioned connecting plate (7) is fixedly connected to the right end of the support block (5). An installation block (8) is fixedly connected to the upper end of the plug body (2). A sliding groove is provided at the lower end of the installation block (8). An opening corresponding to the connecting plate (7) is provided on the left end of the installation block (8). The right end of the connecting plate (7) slides through the opening and extends into the sliding groove. Three longitudinally arranged... The upper end of the slider (12) is fixedly connected to a wedge-shaped locking block (13). The lower end of the connecting plate (7) is provided with a slot corresponding to the locking block (13). The upper end of the locking block (13) slides into the slot. The lower end of the slider (12) is slidably inserted with multiple vertically arranged guide rods (14). The lower end of the guide rod (14) is fixedly connected to the upper end of the plug body (2). A spring (15) is slidably sleeved on the guide rod (14). The two ends of the spring (15) are fixedly connected to the lower end of the slider (12) and the upper end of the plug body (2) respectively. A vertically arranged push post (9) is fixedly connected to the upper end of the slider (12) and near the right edge. The upper end of the push post (9) slides through the mounting block (8) and is fixedly connected to a horizontally arranged push plate (10).
2. The automotive wiring harness connector anti-misinsertion locking mechanism according to claim 1, characterized in that: The upper and lower sides of the connecting plate (7) are fixedly connected to the fixing blocks (6), and the end of the fixing block (6) away from the mounting block (8) is fixedly connected to the support block (5).
3. The automotive wiring harness connector anti-misinsertion locking mechanism according to claim 1, characterized in that: Both ends of the slider (12) are provided with arc-shaped grooves, and rolling balls are connected to the inner sidewall of the arc-shaped grooves, with a portion of the rolling balls penetrating through the arc-shaped grooves.
4. The automotive wiring harness connector anti-misinsertion locking mechanism according to claim 1, characterized in that: The plug body (2) is fixedly connected to a first rubber pad (4) on the side near the positioning rod (3).
5. The automotive wiring harness connector anti-misinsertion locking mechanism according to claim 1, characterized in that: The upper end of the push plate (10) is fixedly connected to a second rubber pad (11).
6. The automotive wiring harness connector anti-misinsertion locking mechanism according to claim 1, characterized in that: The end of the positioning rod (3) away from the plug body (2) is tapered.