Anti-loose type automobile wire harness insulation terminal

Abstract

The utility model relates to the technical field of automobile wire harness connecting components, and particularly relates to an anti-loose automobile wire harness insulation terminal, which is double-anti-loose, stable, insulated and easy to assemble, comprising an insulation shell, a conductive core body arranged inside the insulation shell and a crimping assembly for connecting a wire, the crimping assembly is fixedly connected with the conductive core body, a first anti-loose structure is arranged between the insulation shell and the conductive core body, and a second anti-loose structure is arranged between the crimping assembly and the wire.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive wiring harness connection components, and in particular to an anti-loosening type automotive wiring harness insulated terminal block. Background Technology

[0002] Automotive wiring harnesses form the core of a vehicle's electrical network, and insulated terminals, as the core components connecting these harnesses, directly impact the safe operation of the automotive circuitry. Existing automotive wiring harness insulated terminals commonly exhibit the following problems during use: Under vibrations and bumps generated during vehicle operation, the crimping point between the terminal and the wire is prone to loosening, leading to increased contact resistance, localized overheating, and in severe cases, circuit breakage or burnout. Simultaneously, the lack of an effective anti-loosening structure between the terminal's insulating shell and conductive core allows for relative displacement after prolonged use, compromising insulation performance and posing a risk of leakage. Current methods for preventing loosening often involve increasing crimping force or using fastening bolts. However, increasing crimping force can easily deform and damage the wires or terminals, and fastening bolts also pose a risk of loosening due to vibration. These methods fail to fundamentally solve the loosening problem and cannot guarantee the long-term stable operation of the automotive circuitry. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a double anti-loosening, stable insulation and easy assembly anti-loosening automotive wiring harness insulated terminal.

[0004] This utility model discloses an anti-loosening automotive wiring harness insulating terminal block, comprising an insulating shell, a conductive core disposed inside the insulating shell, and a crimping assembly for connecting wires. The crimping assembly is fixedly connected to the conductive core, a first anti-loosening structure is provided between the insulating shell and the conductive core, and a second anti-loosening structure is provided between the crimping assembly and the wires.

[0005] Furthermore, the first anti-loosening structure includes a protrusion provided on the inner wall of the insulating shell and a groove provided on the outer wall of the conductive core, wherein the protrusion and the groove are adapted to each other and the protrusion is embedded in the groove.

[0006] Furthermore, the protrusions are evenly distributed circumferentially along the inner wall of the insulating shell, and the grooves are evenly distributed circumferentially along the outer wall of the conductive core, with the number of protrusions and grooves being the same.

[0007] Furthermore, the protrusion is provided with a guide slope at one end near the inner wall of the insulating shell, and the groove is provided with a mating slope that matches the guide slope on one side near the end of the conductive core.

[0008] Furthermore, the crimping assembly includes a crimping body and crimping claws disposed on the crimping body. The crimping claws are distributed circumferentially along the crimping body, and the second anti-loosening structure is an anti-slip texture disposed on the inner sidewall of the crimping claws.

[0009] Furthermore, the anti-slip texture is a serrated pattern, and the tips of the serrated patterns face away from the direction of wire insertion.

[0010] Furthermore, the crimping assembly also includes a reinforcing ring, which is sleeved on the outside of the crimping claw, and the reinforcing ring and the crimping claw are in an interference fit.

[0011] Furthermore, the inner wall of the reinforcing ring is provided with an elastic protrusion, and the outer wall of the crimping claw is provided with a positioning groove that matches the elastic protrusion, with the elastic protrusion embedded in the positioning groove.

[0012] Furthermore, a sealing cap is provided at the end of the insulating shell away from the wire insertion. The sealing cap is connected to the insulating shell by threads, and a sealing gasket is provided on the inside of the sealing cap. The sealing gasket abuts against the end of the conductive core away from the crimping assembly.

[0013] Furthermore, the conductive core has a guide hole at one end near the crimping assembly. The diameter of the guide hole gradually decreases from the end near the crimping assembly to the end away from the crimping assembly, and the inner wall of the guide hole has a smooth coating.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The first anti-loosening structure effectively limits the relative displacement between the insulating shell and the conductive core through the cooperation of the protrusion and groove, preventing damage to the insulation performance. The guide bevel and mating bevel facilitate assembly. The second anti-loosening structure features anti-slip textures that increase the friction between the crimping claws and the wire, while the serrated texture further enhances the anti-loosening effect and prevents the wire from loosening. The reinforcing ring tightens the crimping claws, preventing deformation, and the elastic protrusion and positioning groove prevent slippage, further improving crimping stability. The sealing cap and gasket provide a sealed protection inside the insulating shell, preventing impurities from entering and affecting conductivity. The guide hole facilitates wire insertion, and the smooth coating prevents damage to the wire sheath, ensuring the wire's insulation performance. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; The following are labels in the attached diagram: 1. Insulating shell; 2. Conductive core; 21. Guide hole; 3. Crimping assembly; 31. Crimping body; 32. Crimping claw; 321. Positioning groove; 33. Reinforcing ring; 331. Elastic protrusion; 4. First anti-loosening structure; 41. Protrusion; 411. Guide slope; 42. Groove; 421. Mating slope; 5. Second anti-loosening structure; 51. Anti-slip texture; 6. Sealing cap; 61. Sealing gasket. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0018] like Figures 1 to 2 As shown, this utility model discloses an anti-loosening automotive wiring harness insulated terminal block, comprising an insulating shell 1, a conductive core 2, and a crimping assembly 3. The conductive core 2 is disposed inside the insulating shell 1, and the crimping assembly 3 is fixedly connected to the conductive core 2 to realize the connection between the wire and the conductive core 2. To solve the problem of relative displacement between the insulating shell 1 and the conductive core 2, a first anti-loosening structure 4 is provided between the insulating shell 1 and the conductive core 2. To solve the problem of loosening at the crimping point between the terminal and the wire, a second anti-loosening structure 5 is provided between the crimping assembly 3 and the wire.

[0019] Specifically, the first anti-loosening structure 4 includes a protrusion 41 on the inner wall of the insulating shell 1 and a groove 42 on the outer wall of the conductive core 2. The protrusion 41 and the groove 42 are adapted to each other and the protrusion 41 is embedded in the groove 42. Through the cooperation of the protrusion 41 and the groove 42, the relative displacement between the insulating shell 1 and the conductive core 2 can be effectively restricted, avoiding the damage to the insulation performance caused by the displacement due to vibration. Furthermore, the protrusion 41 is evenly distributed along the circumference of the inner wall of the insulating shell 1, and the groove 42 is evenly distributed along the circumference of the outer wall of the conductive core 2, and the two are of the same number. This distribution method can make the force between the insulating shell 1 and the conductive core 2 more uniform and improve the anti-loosening effect. At the same time, a guide slope 411 is provided at one end of the protrusion 41 near the inner wall of the insulating shell 1, and a mating slope 421 is provided on one side of the groove 42 near the end of the conductive core 2. The cooperation of the guide slope 411 and the mating slope 421 facilitates the smooth installation of the conductive core 2 into the interior of the insulating shell 1 and reduces the assembly difficulty.

[0020] The crimping assembly 3 includes a crimping body 31 and crimping claws 32. The crimping claws 32 are distributed circumferentially along the crimping body 31. The second anti-loosening structure 5 includes anti-slip textures 51 provided on the inner sidewall of the crimping claws 32. The anti-slip textures 51 can increase the friction between the crimping claws 32 and the wire, preventing the wire from loosening from the crimping claws 32 during vibration. Preferably, the anti-slip textures 51 are serrated, and the tips of the serrated textures face away from the direction of wire insertion. This structural design can not only further increase the friction but also play a certain role in clamping the wire. When the wire tends to loosen, the tips of the serrated textures will generate reverse resistance on the wire, further preventing the wire from loosening.

[0021] To further improve the crimping stability of the crimping assembly 3, the crimping assembly 3 also includes a reinforcing ring 33. The reinforcing ring 33 is sleeved on the outside of the crimping claw 32 and has an interference fit with the crimping claw 32. The reinforcing ring 33 can tighten the crimping claw 32, preventing the crimping claw 32 from opening and deforming due to long-term use or vibration, and ensuring the crimping force of the crimping claw 32 on the wire. At the same time, an elastic protrusion 331 is provided on the inner wall of the reinforcing ring 33, and a positioning groove 321 is provided on the outer wall of the crimping claw 32. The elastic protrusion 331 is embedded in the positioning groove 321. Through the cooperation between the elastic protrusion 331 and the positioning groove 321, the reinforcing ring 33 can be prevented from sliding along the axial direction of the crimping claw 32 during vibration, further improving the reinforcement effect of the reinforcing ring 33.

[0022] A sealing cap 6 is provided at the end of the insulating shell 1 away from the insertion of the wire. The sealing cap 6 is detachably connected to the insulating shell 1. A sealing gasket 61 is provided on the inner side of the sealing cap 6. The sealing gasket 61 abuts against the end of the conductive core 2 away from the crimping assembly 3. The sealing cap 6 and the sealing gasket 61 can provide a sealing and protection function for the inside of the insulating shell 1, preventing dust, moisture and other impurities from entering the inside of the insulating shell 1 and affecting the conductivity of the conductive core 2.

[0023] A guide hole 21 is provided at one end of the conductive core 2 near the crimping assembly 3. The diameter of the guide hole 21 gradually decreases from the end near the crimping assembly 3 to the end away from the crimping assembly 3. The guide hole 21 can guide the insertion of the wire, making it easy for the wire to be accurately inserted between the conductive core 2 and the crimping claw 32. The inner wall of the guide hole 21 is provided with a smooth coating. The smooth coating can reduce the friction when the wire is inserted, prevent the outer sheath of the wire from being scratched during the insertion process, and ensure the insulation performance of the wire.

[0024] This utility model discloses an anti-loosening automotive wiring harness insulated terminal block. During operation, the wire is first inserted into the guide hole 21 of the conductive core 2, bringing the wire end into contact with the conductive core 2. Then, a crimping tool is used to crimp the crimping claw 32, causing it to tightly wrap around the wire. The serrated anti-slip texture 51 on the inner wall of the crimping claw 32 closely adheres to the wire, increasing friction. Next, a reinforcing ring 33 is fitted onto the outside of the crimping claw 32, with the elastic protrusion 331 on the inner wall of the reinforcing ring 33 embedding into the positioning groove 321 on the outer wall of the crimping claw 32, providing a clamping effect. Finally, the conductive core 2 is installed inside the insulating shell 1, with the protrusion 41 on the inner wall of the insulating shell 1 embedding into the groove 42 on the outer wall of the conductive core 2. Then, a sealing cap 6 is threaded onto the insulating shell 1, with the sealing gasket 61 on the inner side of the sealing cap 6 abutting against the conductive core 2, completing the terminal block assembly. During vehicle operation, the first anti-loosening structure 4 prevents relative displacement between the insulating shell 1 and the conductive core 2, the second anti-loosening structure 5 and the reinforcing ring 33 prevent the wire from loosening with the crimping assembly 3, and the sealing cover 6 and the sealing gasket 61 prevent impurities from entering, ensuring stable and reliable operation of the wiring terminals.

[0025] The present invention relates to an anti-loosening automotive wiring harness insulating terminal block, the installation method, connection method or setting method of which are all common mechanical methods, and any method that can achieve its beneficial effect can be implemented.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A type of anti-loosening automotive wiring harness insulating terminal, characterized in that, It includes an insulating shell (1), a conductive core (2) disposed inside the insulating shell (1), and a crimping assembly (3) for connecting wires. The crimping assembly (3) is fixedly connected to the conductive core (2). A first anti-loosening structure (4) is provided between the insulating shell (1) and the conductive core (2), and a second anti-loosening structure (5) is provided between the crimping assembly (3) and the wires.

2. The anti-loosening automotive wiring harness insulating terminal as described in claim 1, characterized in that, The first anti-loosening structure (4) includes a protrusion (41) disposed on the inner wall of the insulating shell (1) and a groove (42) disposed on the outer wall of the conductive core (2). The protrusion (41) is adapted to the groove (42) and the protrusion (41) is embedded in the groove (42).

3. The anti-loosening automotive wiring harness insulating terminal as described in claim 2, characterized in that, The protrusions (41) are evenly distributed along the inner wall of the insulating shell (1), and the grooves (42) are evenly distributed along the outer wall of the conductive core (2), and the number of protrusions (41) and grooves (42) is the same.

4. The anti-loosening automotive wiring harness insulating terminal as described in claim 2, characterized in that, The protrusion (41) has a guide slope (411) at one end near the inner wall of the insulating shell (1), and the groove (42) has a mating slope (421) that matches the guide slope (411) on one side near the end of the conductive core (2).

5. The anti-loosening automotive wiring harness insulating terminal as described in claim 1, characterized in that, The crimping assembly (3) includes a crimping body (31) and crimping claws (32) disposed on the crimping body (31). The crimping claws (32) are distributed circumferentially along the crimping body (31). The second anti-loosening structure (5) is an anti-slip texture (51) disposed on the inner sidewall of the crimping claws (32).

6. The anti-loosening automotive wiring harness insulating terminal as described in claim 5, characterized in that, The anti-slip texture (51) is a serrated texture, and the tips of the serrated texture face away from the direction of wire insertion.

7. The anti-loosening automotive wiring harness insulating terminal as described in claim 5, characterized in that, The crimping assembly (3) further includes a reinforcing ring (33), which is sleeved on the outside of the crimping claw (32), and the reinforcing ring (33) and the crimping claw (32) are in an interference fit.

8. The anti-loosening automotive wiring harness insulating terminal as described in claim 7, characterized in that, The inner wall of the reinforcing ring (33) is provided with an elastic protrusion (331), and the outer wall of the crimping claw (32) is provided with a positioning groove (321) that is adapted to the elastic protrusion (331). The elastic protrusion (331) is embedded in the positioning groove (321).

9. The anti-loosening automotive wiring harness insulating terminal as described in claim 1, characterized in that, The insulating shell (1) has a sealing cap (6) at the end away from the wire insertion. The sealing cap (6) is connected to the insulating shell (1) by a thread, and a sealing gasket (61) is provided on the inner side of the sealing cap (6). The sealing gasket (61) abuts against the end of the conductive core (2) away from the crimping assembly (3).

10. The anti-loosening automotive wiring harness insulating terminal as described in claim 1, characterized in that, The conductive core (2) has a guide hole (21) at one end near the crimping assembly (3). The diameter of the guide hole (21) gradually decreases from the end near the crimping assembly (3) to the end away from the crimping assembly (3), and the inner wall of the guide hole (21) is provided with a smooth coating.

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