A testing device for the shielding effectiveness of automotive wiring harnesses

Abstract

This utility model provides a testing device for the shielding effectiveness of automotive wiring harnesses, relating to the technical field of automotive wiring harness shielding effectiveness testing devices. It includes: a base plate, a support block fixedly connected to the center of the top of the base plate, a shielding chamber fixedly connected to the top of the support block, and turntables rotatably connected to the outer surfaces of the shielding chamber near both ends. Each turntable has four evenly arranged first sliding grooves on its outer surface, and first sliders slidably connected to the inner walls of the eight first sliding grooves. Gears are fixedly fitted onto the outer surfaces of both turntables. In this utility model, the device uses turntables, rotating which moves the clamping blocks. By adjusting the distance between the clamping blocks, it can clamp wiring harnesses of different sizes and specifications, improving the versatility of the automotive shielding effectiveness testing device.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive wiring harness shielding effectiveness testing devices, and in particular to an automotive wiring harness shielding effectiveness testing device. Background Technology

[0002] The automotive wiring harness shielding effectiveness tester is a device used to test the shielding effectiveness of automotive wiring harnesses. It is mainly used to evaluate the performance of the wiring harness in an electromagnetic environment and ensure that it can effectively reduce electromagnetic interference under high voltage and high current conditions.

[0003] In the existing technology, when using automotive wiring harness shielding effectiveness testing devices, the wiring harness needs to be clamped to prevent it from moving or deforming during the test. However, traditional clamping devices are simple in structure and can only be used for wiring harnesses of the same size and specification. Different clamping devices are required to fix wiring harnesses of different sizes and specifications, resulting in low versatility of automotive shielding effectiveness testing devices. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing automotive wiring harness shielding effectiveness testing devices require clamping the wiring harness before use to prevent it from moving or deforming during testing. However, traditional clamping devices are limited in structure and can only be used for wiring harnesses of the same size and specification. Different clamping devices are required to fix wiring harnesses of different sizes and specifications, resulting in low versatility of automotive wiring harness shielding effectiveness testing devices. Therefore, this invention proposes an automotive wiring harness shielding effectiveness testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automotive wiring harness shielding effectiveness testing device, comprising: a base plate, a support block fixedly connected to the top center of the base plate, a shielding chamber fixedly connected to the top of the support block, turntables rotatably connected to the outer surfaces of the shielding chamber near both ends, four evenly arranged first sliding grooves opened on the outer surfaces of the two turntables, first sliders slidably connected to the inner walls of the eight first sliding grooves, and gears fixedly sleeved on the outer surfaces of the two turntables.

[0006] Preferably, one end of each of the eight first sliders is fixedly connected to a clamping block, and the outer surface of each of the eight clamping blocks is provided with a second groove.

[0007] Preferably, each end of the shielding chamber is fixedly connected to four uniformly arranged second sliders, and the inner walls of the eight second sliding grooves are slidably connected to the outer surfaces of the eight second sliders respectively.

[0008] Preferably, the outer surface of the shielding chamber is fixedly connected to two slide rails, and the inner walls of the two slide rails are slidably connected to a third slider.

[0009] Preferably, the tops of the two third sliders are fixedly connected to limit blocks, and the outer surfaces of the two limit blocks mesh with the outer surfaces of the two gears respectively.

[0010] Preferably, an analyzer is installed on the top of the base plate, and support legs are fixedly connected to the bottom of the base plate near the four corners.

[0011] Preferably, handles are fixedly connected to the outer surfaces of both gears, and the outer surfaces of the eight clamping blocks are respectively in contact with the outer surfaces of the two turntables.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the device is equipped with a turntable. By rotating the turntable, the clamping blocks are moved. By adjusting the distance between the clamping blocks, wire harnesses of different sizes and specifications can be clamped, thereby improving the versatility of the automotive shielding effectiveness testing device.

[0014] 2. In this utility model, the gear is driven to rotate by the turntable. When it rotates to the appropriate position, the gear is limited by the moving limit block. The gear cannot rotate or move, thus ensuring the stability of the clamping block when clamping the automotive wiring harness. Attached Figure Description

[0015] Figure 1 This utility model provides a front perspective view of an automotive wiring harness shielding effectiveness testing device;

[0016] Figure 2 This utility model provides a front perspective view of the slide rail of an automotive wiring harness shielding effectiveness testing device;

[0017] Figure 3 This utility model provides a front-view perspective view of a turntable for testing the shielding effectiveness of automotive wiring harnesses.

[0018] Figure 4 This utility model provides a front perspective view of the clamping block of an automotive wiring harness shielding effectiveness testing device;

[0019] Figure 5 This utility model presents a front perspective view of a gear in an automotive wiring harness shielding effectiveness testing device.

[0020] Legend: 1. Base plate; 2. Support block; 3. Shielding chamber; 4. Turntable; 5. First slide groove; 6. First slider; 7. Second slider; 8. Clamping block; 9. Second slide groove; 10. Gear; 11. Slide rail; 12. Third slider; 13. Limiting block; 14. Analyzer; 15. Support leg; 16. Handle. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figures 1-5 As shown, this utility model provides a vehicle wiring harness shielding effectiveness testing device, including: a base plate 1, a support block 2 fixedly connected to the top center of the base plate 1, a shielding chamber 3 fixedly connected to the top of the support block 2, turntables 4 rotatably connected to the outer surface of the shielding chamber 3 near both ends, four evenly arranged first sliding grooves 5 opened on the outer surface of each of the two turntables 4, first sliders 6 slidably connected to the inner walls of the eight first sliding grooves 5, gears 10 fixedly sleeved on the outer surface of each of the two turntables 4, clamping blocks 8 fixedly connected to one end of each of the eight first sliders 6, second sliding grooves 9 opened on the outer surface of each of the eight clamping blocks 8, four evenly arranged second sliders 7 fixedly connected to both ends of the shielding chamber 3, the inner walls of the eight second sliding grooves 9 slidably connected to the outer surfaces of the eight second sliders 7 respectively, two slide rails 11 fixedly connected to the outer surface of the shielding chamber 3, and third sliders 12 slidably connected to the inner walls of the two slide rails 11.

[0024] The overall effect of Embodiment 1 is as follows: When using an automotive wiring harness shielding effectiveness testing device, the operator first needs to place the automotive wiring harness into the shielding chamber 3. The operator can then hold the handle 16 and rotate the handle 16 to drive the gear 10 to rotate. When the gear 10 rotates, it drives the turntable 4 to rotate. When the turntable 4 rotates, it drives multiple first sliding grooves 5 on the turntable 4 to rotate. When the first sliding grooves 5 rotate, they drive the first slider 6 to slide along the inner wall of the first sliding groove 5. The first slider 6 drives the clamping block 8 to move in all directions. When the clamping block 8 moves, it drives the second... The slide 9 moves, and the inner wall of the second slide 9 slides along the outer surface of the second slider 7. When the distance between the four clamping blocks 8 is suitable for placing the automotive wiring harness, the handle 16 is stopped. The operator places the automotive wiring harness into the shielding chamber 3, and then rotates the handle 16 in the opposite direction. The handle 16 drives the gear 10 to rotate, which in turn drives the turntable 4 to rotate. The rotation of the turntable 4 drives the multiple first slides 5 on the turntable 4 to rotate. When the first slides 5 rotate, they drive the first slider 6 to slide along the inner wall of the first slide 5. The first slider 6 then drives the clamping block 8 to move toward the automotive wiring harness. When the clamping block 8 moves, it drives the second slide groove 9 to move as well. The inner wall of the second slide groove 9 slides along the outer surface of the second slider 7. When the outer surfaces of all four clamping blocks 8 are in contact with the outer surface of the automotive wiring harness, the handle 16 is stopped. Then, the third slider 12 is moved towards the gear 10. The third slider 12 slides along the inner wall of the slide rail 11. At the same time, when the third slider 12 moves, it drives the limiting block 13 to move. When the outer surface of the limiting block 13 is in contact with the outer surface of the gear 10, the movement of the third slider 12 is stopped, and then the operation resumes. Personnel test the automotive wiring harness inside the shielded chamber 3. After the test is completed, the third slider 12 is moved away from the gear 10. The third slider 12 will drive the limiting block 13 to move until the outer surface of the limiting block 13 no longer contacts the outer surface of the gear 10. The movement of the third slider 12 stops. The handle 16 is turned again. By turning the handle 16, the clamping blocks 8 are moved, changing the distance between the clamping blocks 8 to clamp wiring harnesses of different sizes and specifications, thereby improving the versatility of the automotive wiring harness shielding effectiveness testing device.

[0025] Example 2: As Figures 1-5 As shown, the tops of the two third sliders 12 are fixedly connected to limit blocks 13, and the outer surfaces of the two limit blocks 13 mesh with the outer surfaces of the two gears 10 respectively. An analyzer 14 is installed on the top of the base plate 1, and support legs 15 are fixedly connected to the bottom of the base plate 1 near the four corners. Handles 16 are fixedly connected to the outer surfaces of the two gears 10 respectively, and the outer surfaces of the eight clamping blocks 8 are respectively attached to the outer surfaces of the two turntables 4.

[0026] The overall effect of Embodiment 2 is as follows: When using an automotive wiring harness shielding effectiveness testing device, the operator needs to place the automotive wiring harness into the shielding chamber 3. The operator then rotates the handle 16, which drives the gear 10 to rotate. The gear 10 drives the first slide groove 5 to move, which in turn drives the clamping block 8 to move. When the distance between the clamping blocks 8 is appropriate, the operator stops rotating the handle 16 and then moves the third slider 12. The third slider 12 moves towards the gear 10, and simultaneously drives the limiting block 13 to move. The operator stops moving the third slider 12 when the outer surface of the limiting block 13 is in contact with the outer surface of the gear 10. At this point, the limiting block 13 restricts the rotation of the gear 10, preventing the gear 10 from moving. This prevents the first slide groove 5 from moving, thus restricting the clamping block 8. This ensures that the clamping block 8 is in a stable, immovable state when clamping the automotive wiring harness, effectively guaranteeing stable and effective clamping of the automotive wiring harness during shielding effectiveness testing.

[0027] Working Principle: A vehicle wiring harness shielding effectiveness testing device, when in use, after the vehicle wiring harness has been placed inside the shielding chamber 3 and needs to be secured, can rotate handle 16. Handle 16 drives gear 10 to rotate, gear 10 drives turntable 4 to rotate, turntable 4 drives first slide groove 5 to rotate, and the rotation of first slide groove 5 causes first slider 6 to slide along the inner wall of first slide groove 5. The movement of first slider 6 causes clamping block 8 to move, and the movement of clamping block 8 causes second slide groove 9 to slide along the outer surface of second slider 7. When the outer surface of clamping block 8 contacts the vehicle wiring harness, rotation of handle 16 is stopped. The third slider 12 is moved towards the gear 10. The third slider 12 slides along the inner wall of the slide rail 11 and drives the limiting block 13 to move. When the outer surface of the limiting block 13 meshes with the outer surface of the gear 10, the movement of the third slider 12 stops. At this time, the limiting block 13 restricts the rotation of the gear 10. By rotating the gear 10, the turntable 4 is driven to rotate. By rotating the turntable 4, the clamping blocks 8 are driven to move. By moving the distance between the clamping blocks 8, the device can adapt to different sizes and specifications of automotive wiring harnesses, thereby improving the versatility of the automotive wiring harness shielding effectiveness testing device.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A testing device for the shielding effectiveness of automotive wiring harnesses, comprising: The base plate (1) is characterized in that a support block (2) is fixedly connected to the top of the base plate (1) at the center, a shielding chamber (3) is fixedly connected to the top of the support block (2), a turntable (4) is rotatably connected to the outer surface of the shielding chamber (3) near both ends, four evenly arranged first sliding grooves (5) are opened on the outer surface of the two turntables (4), a first slider (6) is slidably connected to the inner wall of the eight first sliding grooves (5), and a gear (10) is fixedly sleeved on the outer surface of the two turntables (4).

2. The automotive wiring harness shielding effectiveness testing device according to claim 1, characterized in that: Each of the eight first sliders (6) has a clamping block (8) fixedly connected to one end, and the outer surface of each of the eight clamping blocks (8) is provided with a second groove (9).

3. The automotive wiring harness shielding effectiveness testing device according to claim 2, characterized in that: The shielding chamber (3) has four uniformly arranged second sliders (7) fixedly connected to both ends, and the inner walls of the eight second slide grooves (9) are slidably connected to the outer surfaces of the eight second sliders (7).

4. The automotive wiring harness shielding effectiveness testing device according to claim 3, characterized in that: Two slide rails (11) are fixedly connected to the outer surface of the shielding chamber (3), and a third slider (12) is slidably connected to the inner wall of each of the two slide rails (11).

5. The automotive wiring harness shielding effectiveness testing device according to claim 4, characterized in that: The tops of the two third sliders (12) are fixedly connected to limit blocks (13), and the outer surfaces of the two limit blocks (13) mesh with the outer surfaces of the two gears (10).

6. The automotive wiring harness shielding effectiveness testing device according to claim 5, characterized in that: An analyzer (14) is installed on the top of the base plate (1), and support legs (15) are fixedly connected to the bottom of the base plate (1) near the four corners.

7. The automotive wiring harness shielding effectiveness testing device according to claim 6, characterized in that: Handles (16) are fixedly connected to the outer surfaces of both gears (10), and eight clamping blocks (8) are attached. The outer surface of each is attached to the outer surface of the two turntables (4).

Images