Automobile electronic connector structure with terminal anti-loosening

Abstract

The utility model relates to the terminal of electronic connector field's car electronic connector structure of anti -loosening, including insulating shell and plug -in terminal, the installation cavity of through insulating shell is arranged in insulating shell, and the both ends opening of installation cavity are respectively used for the butt joint mouth of butt joint connector plug -in and the wiring port for leading into the wire, plug -in terminal is inserted into installation cavity from the wiring port of insulating shell, and the middle part of plug -in terminal is provided with the welding part for with the electric core welding of wire, and the integral moulding elastic buckle is equipped on plug -in terminal, and the inner wall of installation cavity is correspondingly provided with the clamping groove for the elastic buckle clamping of being set up, after terminal insertion is in place, the elastic buckle rebounds, and the back of the limiting portion forms the solid limit cooperation with the clamping groove groove wall, fundamentally solved the technical problem that terminal loosens because of vibration, and the reliability and durability of connection have been greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic connectors, and in particular to the structure of automotive electronic connectors with terminals designed to prevent loosening. Background Technology

[0002] With the rapid development of the automotive industry and the increasing level of automotive electronics and intelligence, electronic connectors, as indispensable basic components in automotive circuit systems, play a crucial role. They function like the "neural network" of a car, responsible for ensuring reliable electrical signal transmission and connection between complex electronic control units (ECUs), sensors, actuators, and wiring harnesses, directly affecting the vehicle's power performance, safety performance, and comfort. Therefore, the stability and reliability of connector connections are prerequisites for ensuring the normal operation of various electronic devices in a car.

[0003] Currently, common automotive electronic connectors typically consist of an insulating shell and mating terminals. The terminals are secured by crimping or soldering wires and then inserting them into the mounting cavity of the shell. However, automobiles operate in a complex and harsh environment, particularly subjected to continuous vibration and impact from the engine and road surface. Under these conditions, the drawbacks of traditional connector structures, especially those relying solely on friction between the terminals and the mounting cavity or simple barbs for fixation, become increasingly apparent. Prolonged vibration can cause slight relative displacement and loosening between the mating terminals and the insulating shell. Over time, this loosening can worsen, potentially leading to increased contact resistance, unstable signal transmission, and even complete terminal detachment, causing a circuit break. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides an automotive electronic connector structure with anti-loosening terminals, which can effectively solve the technical problem that the plug terminals are prone to loosening or even falling off from the insulating shell.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] The automotive electronic connector structure with anti-loosening terminal includes an insulating shell and a plug terminal. The insulating shell has a mounting cavity that penetrates through it. The two ends of the mounting cavity have a mating interface for plugging into a mating connector and a wiring port for inserting wires, respectively. The plug terminal is inserted into the mounting cavity from the wiring port of the insulating shell. The middle of the plug terminal has a welding part for soldering to the wire core. The plug terminal has an integrally formed elastic buckle. The inner wall of the mounting cavity has a corresponding slot for the elastic buckle to engage.

[0007] The elastic buckle includes a fixed end fixedly connected to the side wall of the plug-in terminal, an elastic arm extending obliquely from the fixed end toward the insertion direction of the plug-in terminal, and a limiting part provided at the free end of the elastic arm.

[0008] When the plug-in terminal is installed to the preset position in the mounting cavity along the insertion direction, the elastic arm is squeezed by the inner wall of the mounting cavity and undergoes elastic deformation until the limiting part reaches and is locked into the slot. The elastic arm springs back to its original position, and the back of the limiting part forms a limiting fit with the slot wall on the side of the slot near the wiring port to prevent the plug-in terminal from coming out in the opposite direction.

[0009] Furthermore, the inner wall of the mounting cavity is also provided with a limiting boss, and when the plug-in terminal is installed in place, the end of the plug-in terminal abuts against the side wall of the limiting boss.

[0010] Furthermore, the edge of the wiring port of the mounting cavity is provided with a guide slope, which is used to guide the elastic arm and the limiting part to slide smoothly into the mounting cavity when the plug-in terminal is inserted.

[0011] Furthermore, the bottom surface of the card slot is provided with an unlocking opening that extends to the outer wall of the insulating shell.

[0012] Furthermore, the surface of the insulating shell is provided with a cover plate to prevent accidental contact by covering and unlocking the opening.

[0013] Furthermore, the surface of the insulating shell is provided with a positioning boss, and the anti-accidental contact cover is provided with a snap-fit ​​groove that mates with the positioning boss.

[0014] Compared with existing technologies, the advantages of this invention are as follows: By setting an integrally formed elastic buckle on the plug-in terminal and correspondingly opening a slot on the inner wall of the mounting cavity, when the terminal is inserted into place, the elastic buckle rebounds, and the back of its limiting part forms a solid limiting fit with the slot wall. This rigid locking mechanism can provide a strong reverse holding force, effectively resisting vibrations and impacts generated in all directions during vehicle operation, fundamentally solving the technical problem of terminal loosening due to vibration, and greatly improving the reliability and durability of the connection. During the process of inserting the plug-in terminal into the mounting cavity, a clear sound and tactile feedback is generated when the elastic arm slides past the edge of the slot. This provides operators with clear and accurate installation instructions through both auditory and tactile senses, simplifying the assembly process, improving production efficiency, and avoiding quality hazards caused by improper installation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is an exploded view of the structure of this utility model;

[0017] Figure 3This is a schematic diagram of the structure of this utility model;

[0018] Figure 4 This is a schematic diagram showing the cooperation between the positioning boss and the locking groove in this utility model;

[0019] The numbers in the diagram are: 1-insulating shell, 101-mounting cavity, 102-slot, 103-limiting boss, 104-guide slope, 105-unlocking opening, 106-positioning boss, 107-protrusion;

[0020] 2-Plug-in terminal, 201-Elastic snap, 211-Fixed end, 221-Elastic arm, 231-Limiting part, 202-Welding part;

[0021] 3-Wire, 4-Anti-accidental contact cover, 401-Snap-fit ​​groove, 402-Dimple. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The following is combined with Figures 1-4 The structure of the automotive electronic connector with anti-loosening terminals of this utility model is described in detail below:

[0024] The automotive electronic connector structure with anti-loosening terminal includes an insulating shell 1 and a plug terminal 2. The insulating shell 1 has a mounting cavity 101 that penetrates through the insulating shell 1. The two ends of the mounting cavity 101 have a mating interface for plugging into a mating connector and a wiring port for inserting a wire 3, respectively. The plug terminal 2 is inserted into the mounting cavity 101 from the wiring port of the insulating shell 1. The middle part of the plug terminal 2 has a welding part 202 for welding to the wire 3 core. The plug terminal 2 has an integrally formed elastic buckle 201. The inner wall of the mounting cavity 101 has a corresponding slot 102 for the elastic buckle 201 to be engaged.

[0025] The elastic buckle 201 includes a fixed end 211 fixedly connected to the side wall of the plug-in terminal 2, an elastic arm 221 extending obliquely from the fixed end 211 toward the insertion direction of the plug-in terminal 2, and a limiting part 231 provided at the free end of the elastic arm 221.

[0026] When the plug-in terminal 2 is installed in the preset position in the mounting cavity 101 along the insertion direction, the elastic arm 221 is squeezed by the inner wall of the mounting cavity 101 and undergoes elastic deformation until the limiting part 231 arrives and is locked into the slot 102. The elastic arm 221 springs back to its original position, and the back of the limiting part 231 forms a limiting fit with the slot wall of the slot 102 near the wiring port to prevent the plug-in terminal 2 from coming out in the opposite direction.

[0027] By incorporating an integrally formed elastic buckle 201 on the plug-in terminal 2 and correspondingly opening a slot 102 on the inner wall of the mounting cavity 101, the elastic buckle 201 springs back after the terminal is inserted into place, and the back of its limiting part 231 forms a solid limiting fit with the groove wall of the slot 102. This rigid locking mechanism provides a strong reverse holding force, effectively resisting vibrations and impacts generated in all directions during vehicle operation, fundamentally solving the technical problem of terminal loosening due to vibration, and greatly improving the reliability and durability of the connection. During the insertion of the plug-in terminal 2 into the mounting cavity 101, a clear audible and tactile feedback is generated when the elastic arm 221 slides past the edge of the slot 102. This provides clear and accurate installation instructions to the operator through both auditory and tactile feedback, simplifying the assembly process, improving production efficiency, and avoiding quality hazards caused by improper installation. This structure requires no additional locking parts or complex auxiliary mechanisms. The elastic buckle 201 and the plug-in terminal 2 are integrally stamped, simplifying the manufacturing process and not significantly increasing production costs. At the same time, the integrated structure avoids the risk of failure that may be caused by redundant parts, and simplifies the supply chain and assembly process.

[0028] The inner wall of the mounting cavity 101 is also provided with a limiting boss 103. When the plug-in terminal 2 is installed in place, the end of the plug-in terminal 2 abuts against the side wall of the limiting boss 103. The limiting boss 103 provides a precise and reliable mechanical stop for the insertion stroke of the plug-in terminal 2. This not only ensures that the plug-in terminal 2 can accurately reach the preset optimal position each time it is installed, thereby ensuring that the elastic buckle 201 and the slot 102 can be fully aligned and reliably locked, but also effectively prevents excessive deformation or damage to the elastic buckle 201 or other structures that may be caused by over-insertion, further improving the consistency of product assembly and the safety of the structure.

[0029] The mounting cavity 101 has a guide slope 104 at the edge of the wiring port. The guide slope 104 can smoothly guide the elastic buckle 201 during the initial stage of insertion of the plug terminal 2. During the insertion of the plug terminal 2, the elastic arm 221, which may be slightly open, is pre-closed and guided, so that it can smoothly enter the mounting cavity 101. This avoids direct collision, scratching or jamming between the end of the elastic arm 221 and the edge of the opening, greatly reducing the insertion force, making the assembly process more effortless and smooth, protecting the structural integrity of the elastic buckle 201, and extending its service life.

[0030] Furthermore, the bottom surface of the slot 102 is provided with an unlocking opening 105, which extends to the outer wall of the insulating shell 1. When maintenance or replacement of the terminal is required, a special tool, such as a probe, can be inserted from the outside of the shell through the unlocking opening 105 to directly press the limiting part 231 of the elastic buckle 201, causing it to disengage from the slot 102, thereby smoothly removing the terminal. This avoids the problem of the terminal only being able to enter but not exit, making maintenance difficult and greatly improving the maintainability and flexibility of the product. The surface of the insulating shell 1 is provided with an anti-accidental contact cover 4 that covers the unlocking opening 105. This can prevent foreign objects, such as dust, moisture, and small metal shavings, from entering the connector through the opening and affecting electrical performance during daily use or in vibration environments. This fundamentally avoids the major safety hazard of the elastic buckle 201 being accidentally locked due to accidental contact, causing the terminal to loosen, and greatly improves the reliability and safety of the product in harsh environments.

[0031] The surface of the insulating shell 1 is provided with a positioning boss 106, and the anti-accidental contact cover 4 is provided with a snap-fit ​​groove 401 that mates with the positioning boss 106. The sidewalls of the positioning boss 106 and the snap-fit ​​groove 401 are provided with mutually paired protrusions 107 and recesses 402, ensuring that the cover can accurately cover the unlocking opening 105 and will not shift or fall off due to vehicle vibration, thus ensuring the continuity and stability of its protective effect. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A terminal anti-loosening automotive electronic connector structure, comprising an insulating shell and plug terminals, wherein a mounting cavity penetrating the insulating shell is provided inside the insulating shell, and the two ends of the mounting cavity have openings for mating interfaces for mating with a mating connector and wiring ports for inserting wires, characterized in that: The plug-in terminal is inserted into the mounting cavity from the wiring port of the insulating shell. The middle part of the plug-in terminal is provided with a welding part for welding to the wire core. The plug-in terminal is provided with an integrally formed elastic buckle. The inner wall of the mounting cavity is provided with a corresponding slot for the elastic buckle to be engaged. The elastic buckle includes a fixed end fixedly connected to the side wall of the plug-in terminal, an elastic arm extending obliquely from the fixed end toward the insertion direction of the plug-in terminal, and a limiting part provided at the free end of the elastic arm. When the plug-in terminal is installed to the preset position in the mounting cavity along the insertion direction, the elastic arm is squeezed by the inner wall of the mounting cavity and undergoes elastic deformation until the limiting part reaches and is locked into the slot. The elastic arm springs back to its original position, and the back of the limiting part forms a limiting fit with the slot wall on the side of the slot near the wiring port to prevent the plug-in terminal from coming out in the opposite direction.

2. The automotive electronic connector structure with terminal anti-loosening feature according to claim 1, characterized in that: The inner wall of the mounting cavity is also provided with a limiting boss. When the plug-in terminal is installed in place, the end of the plug-in terminal abuts against the side wall of the limiting boss.

3. The automotive electronic connector structure with terminal anti-loosening feature according to claim 1, characterized in that: The mounting cavity has a guide bevel at the edge of the wiring port. The guide bevel is used to guide the elastic arm and the limiting part to slide smoothly into the mounting cavity when the plug-in terminal is inserted.

4. The automotive electronic connector structure with terminal anti-loosening according to any one of claims 1-3, characterized in that: The bottom surface of the card slot is provided with an unlocking opening that extends to the outer wall of the insulating shell.

5. The automotive electronic connector structure with terminal anti-loosening feature according to claim 4, characterized in that: The surface of the insulating shell is provided with a cover plate to prevent accidental contact by covering and unlocking the opening.

6. The automotive electronic connector structure with terminal anti-loosening feature according to claim 5, characterized in that: The surface of the insulating shell is provided with a positioning boss, and the anti-accidental contact cover is provided with a snap-fit ​​groove that mates with the positioning boss.

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