Automobile wire harness plug connector with self-locking function

Abstract

The utility model relates to the technical field of automobile wire harness plug connector, specifically relates to a kind of automobile wire harness plug connector with self-locking function, including shell, shell includes shell and the inner shell fixed in the inner side of shell front end, side hole is set up on the lateral wall of inner shell, multiple sets of self-locking hooks are provided in shell, and self-locking hook includes hook rod, connecting piece and pin shaft set in the both sides of hook rod middle part, the top end of connecting piece is fixedly connected with the inner side wall of shell end part, pin shaft sleeve is set in the middle part of hook rod and connecting piece, one side of hook rod is probed into side hole, and external plug is inserted in the inside of inner shell, user can be according to the needs self-locking and cancel self-locking function conversion, by having self-locking function, the function of locking after external plug and shell are connected is realized, the connection fixing effect of both is improved, reduce the situation of accidental drop.

Description

Technical Field

[0001] This utility model relates to the field of automotive wiring harness plug connector technology, and specifically to an automotive wiring harness plug connector with a self-locking function. Background Technology

[0002] In today's increasingly complex automotive electronic systems, wiring harnesses, as the core carriers of signal and power transmission, directly determine the stability and safety of the entire vehicle's electrical functions through their connection reliability. As key components in wiring harness connections, the performance requirements for wiring harness connectors are constantly increasing. Currently, most conventional automotive wiring harness connectors on the market adopt simple plug-in structures or basic snap-fit ​​designs, which have gradually revealed many technical shortcomings in practical applications, making it difficult to meet the needs of automobiles under complex operating conditions.

[0003] From the perspective of connection stability, traditional connectors often rely on a single contact point for fixation due to their snap-fit ​​structure. When a car travels on bumpy roads, experiences vibration and impact, or after long-term use, the snap-fit ​​is prone to wear and deformation, leading to loosening or even detachment of the connection between the plug and socket. This not only causes signal transmission interruption and insufficient power supply, affecting the normal operation of automotive lighting, central control, and sensor systems, but in severe cases, it may also cause short circuits, fires, and other safety accidents, posing a significant threat to driving safety. Meanwhile, although some connectors attempt to improve stability by increasing the number of snap-fits, they lack precise dimensional adaptation design. The mismatch between the snap-fit ​​spacing and the plug length can easily lead to excessive insertion and removal resistance, increasing installation difficulty, and still cannot completely solve the loosening problem after long-term use.

[0004] Automotive wiring harness connectors typically operate in harsh environments such as engine compartments and chassis, which are humid, dusty, and susceptible to oil corrosion. If the sealing structure is poorly designed, moisture, dust, oil, and other impurities can easily seep into the connector, corroding the metal terminals, damaging insulation performance, and leading to faults such as poor contact and short circuits. Existing connectors mostly use a single rubber sealing ring for sealing, but controlling the mating clearance between the sealing ring and the housing / plug is difficult, and there is a lack of design adaptability for self-locking structures. During installation or unlocking, the sealing ring is prone to displacement and deformation, leading to seal failure and inability to effectively resist the effects of harsh external environments, thus shortening the connector's lifespan. Utility Model Content

[0005] Technical problems to be solved

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an automotive wiring harness plug connector with a self-locking function, which can effectively solve the problems of structural connection and sealing in the existing technology.

[0007] Technical solution

[0008] This utility model provides an automotive wiring harness plug connector with a self-locking function, including a housing. The housing includes an outer shell and an inner shell fixed to the inner side of the front end of the outer shell. A side hole is provided on the side wall of the inner shell. Multiple sets of self-locking hooks are provided inside the outer shell. Each self-locking hook includes a hook rod, connecting pieces and pins provided on both sides of the middle of the hook rod. The top end of the connecting piece is fixedly connected to the inner side wall of the end of the outer shell. The pin is sleeved in the middle of the hook rod and the connecting piece. One side of the hook rod extends into the side hole. An external plug is inserted into the inside of the inner shell.

[0009] Furthermore, the bottom of the outer side of the hook rod is fixed with an inward hook structure, and the bottom of the inner side is provided with a triangular block structure, and the distance between the two ends of the hook rod is adapted to the length of the external plug.

[0010] Furthermore, the hook rod and the connecting piece are both pre-drilled with a round hole structure in the middle, and a sealing gasket is fitted between the inner shell and the outer shell. The sealing gasket has a groove whose size is adapted to the size of the self-locking hook.

[0011] Furthermore, a plurality of circular holes are formed through one side of the outer shell, and an unlocking structure is fixed in the circular holes. The unlocking structure includes a plastic sleeve and a ball. The ball is fixed inside the plastic sleeve. The bottom of the plastic sleeve is located at the top of one side of the hook rod. The plastic sleeve is recessed inward in the circular holes.

[0012] Furthermore, each set of hooks is made of insulating material.

[0013] Furthermore, the sphere is recessed within the plastic sleeve.

[0014] Beneficial effects

[0015] In this utility model, the double-layer structure of the inner shell and outer shell provides double protection after the external plug is inserted into the inner shell, reducing the entry of dust and liquid. The outer shell structure can be connected and fixed with the self-locking hook, thus resisting external influencing factors and improving the connection effect.

[0016] In this device, a self-locking hook structure is installed inside the outer casing. After the external plug mates with the socket inside the casing, the external plug can push the inner side of the hook rod outward. Because the middle of the hook rod is fixed in the connecting piece by a pin, the outer side of the hook rod deflects in the opposite direction. Both sides of the hook rod can be fixedly hooked to the outside of the external plug. When the hook rod is hooked to the outside, the inner side of the hook rod tilts outward. Multiple hook rod structures can completely lock the external plug structure, achieving a self-locking and fixing function, and making the two tightly connected. During disassembly, the user can... By pressing the spherical structure and stretching the plastic sleeve, the inner side of the hook rod is pressed down through the plastic sleeve. The inner side of the hook rod can be inserted between the external plug and the socket inside the housing. Simultaneously, the tail end of the hook rod lifts up, allowing the external plug to be removed from the inner housing. This cancels the self-locking function. Therefore, when using this device, the user can switch between self-locking and de-locking functions as needed. Through the self-locking function, the external plug and the housing are connected and then locked, improving the connection and fixing effect and reducing the occurrence of accidental drops. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 3 This is an exploded view of the structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the shell and a structural schematic diagram of the self-locking hook in this utility model.

[0022] The labels in the diagram represent: 1. Shell; 11. Inner shell; 111. Side hole; 12. Outer shell; 13. Sealing gasket; 2. Self-locking hook; 21. Hook rod; 22. Connecting piece; 23. Pin; 3. External plug; 4. Unlocking structure; 41. Plastic sleeve; 42. Sphere. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Example: A self-locking automotive wiring harness plug connector, see attached figure. Figure 1 -Appendix Figure 4 The device includes a housing 1, which includes an outer shell 12 and an inner shell 11 fixed to the inner side of the front end of the outer shell 12. The inner shell 11 has a side hole 111 on its side wall. The outer shell 12 is provided with multiple sets of self-locking hooks 2, and the self-locking hooks 2 include a hook rod 21, connecting pieces 22 and pins 23 located on both sides of the middle part of the hook rod 21. The top end of the connecting piece 22 is fixedly connected to the inner side wall of the end of the outer shell 12. The pin 23 is sleeved in the middle of the hook rod 21 and the connecting piece 22. One side of the hook rod 21 extends into the side hole 111. An external plug 3 is inserted into the inside of the inner shell 11.

[0026] The bottom of the outer side of the hook rod 21 is fixed with an inward hooking structure, and the bottom of the inner side is provided with a triangular block structure. The distance between the two ends of the hook rod 21 is adapted to the length of the external plug 3. The hook rod 21 and the connecting piece 22 are both pre-drilled with round holes in the middle. A sealing gasket 13 is fitted between the inner shell 11 and the outer shell 12. The sealing gasket 13 has a groove with a size adapted to the size of the self-locking hook 2. Each set of hook rods 21 is made of insulating material.

[0027] In this device, the self-locking hook 2 structure installed in the outer casing 12 allows the outer plug 3 to push the inner side of the hook rod 21 outward after it mates with the socket inside the casing 1. Since the middle of the hook rod 21 is fixed to the connecting piece 22 by the pin 23, the outer side of the hook rod 21 deflects in the opposite direction. Both sides of the hook rod 21 can be fixedly hooked to the outside of the outer plug 3. When hooking the outer side of the hook rod 21, the inner side of the hook rod 21 tilts outward. The multiple hook rods 21 structure can completely lock the structure of the outer plug 3, achieving a self-locking function and ensuring a tight connection between the two. During disassembly, the hook rod 21 can be used to... The user can press the ball structure 42 and stretch the plastic sleeve 41. By pressing down on the inner side of the hook 21 through the plastic sleeve 41, the inner side of the hook 21 can be inserted between the external plug 3 and the socket inside the housing 1. The tail end of the hook 21 will simultaneously lift up, and the external plug 3 can be removed from the inner housing 11, thus canceling the self-locking function. Therefore, when using this device, the user can switch between self-locking and de-locking functions as needed. Through the self-locking function, the external plug 3 and the housing 1 are connected and then locked, which improves the connection and fixation effect and reduces the occurrence of accidental drops.

[0028] Multiple sets of circular holes are opened through one side of the outer shell 12. An unlocking structure 4 is fixed in the circular holes. The unlocking structure 4 includes a plastic sleeve 41 and a ball 42. The ball 42 is fixed inside the plastic sleeve 41. The bottom of the plastic sleeve 41 is set at the top of one side of the hook rod 21. The plastic sleeve 41 is recessed inward in the circular holes. The ball 42 is recessed in the plastic sleeve 41. Through the double-layer structure of the inner shell 11 and the outer shell 12, in actual use, after the structure of the external plug 3 and the inner shell 1 is inserted, the double-layer structure can play a double protection effect, while reducing the entry of dust and liquid. At the same time, the structure of the outer shell 12 can be connected and fixed with the self-locking hook 2, so it can resist external influencing factors and improve the connection effect.

[0029] In this design, the sealing gasket 13 forms a comprehensive sealing barrier by tightly fitting together with the inner shell 11, outer shell 12, and self-locking hook 2. On the one hand, it effectively prevents external moisture and dust from entering the connector, avoiding poor contact caused by terminal corrosion. On the other hand, it resists the swelling and aging effects of oil on the seals, extending the service life of the sealing gasket. Even under the long-term bumpy and vibrating conditions of a car, the fit between the sealing gasket and each component will not loosen due to vibration, maintaining stable sealing performance. This provides a reliable protective environment for the signal transmission and power supply components inside the connector, reducing the risk of failure caused by external impurities. The adaptive design of the sealing gasket 13 and the self-locking hook 2 makes the sealing gasket less prone to damage or loss during disassembly and assembly, allowing it to be reused multiple times with the connector, reducing the cost of consumable replacement.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-locking automotive wiring harness plug connector, characterized in that, The device includes a housing (1), which includes an outer shell (12) and an inner shell (11) fixed to the inner side of the front end of the outer shell (12). The inner shell (11) has a side hole (111) on its side wall. The outer shell (12) is provided with multiple sets of self-locking hooks (2). The self-locking hooks (2) include a hook rod (21), connecting pieces (22) and pins (23) located on both sides of the middle part of the hook rod (21). The top end of the connecting piece (22) is fixedly connected to the inner side wall of the end of the outer shell (12). The pin (23) is sleeved in the middle of the hook rod (21) and the connecting piece (22). One side of the hook rod (21) extends into the side hole (111). An external plug (3) is inserted into the inside of the inner shell (11).

2. The automotive wiring harness plug connector with self-locking function according to claim 1, characterized in that, The bottom of the hook rod (21) is fixed with an inward hook structure, and the bottom of the inner side is provided with a triangular block structure. The distance between the two ends of the hook rod (21) is adapted to the length of the external plug (3).

3. The automotive wiring harness plug connector with self-locking function according to claim 1, characterized in that, Both the hook rod (21) and the connecting piece (22) have pre-drilled round holes in the middle, and a sealing gasket (13) is fitted between the inner shell (11) and the outer shell (12). The sealing gasket (13) has a groove whose size is adapted to the size of the self-locking hook (2).

4. The automotive wiring harness plug connector with self-locking function according to claim 1, characterized in that, Multiple sets of circular holes are opened through one side of the outer shell (12), and an unlocking structure (4) is fixed in the circular holes. The unlocking structure (4) includes a plastic sleeve (41) and a ball (42). The ball (42) is fixed inside the plastic sleeve (41). The bottom of the plastic sleeve (41) is located at the top of one side of the hook rod (21). The plastic sleeve (41) is recessed inward in the circular holes.

5. A self-locking automotive wiring harness plug connector according to claim 4, characterized in that, Each hook (21) is made of insulating material.

6. A self-locking automotive wiring harness plug connector according to claim 4, characterized in that, The sphere (42) is recessed within the plastic sleeve (41).

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