A harness plug air tightness detection device

Abstract

This utility model discloses a wire harness plug airtightness testing device, belonging to the field of automotive wire harness testing technology. The device further includes a closed cavity covering the outside of the testing module; a sandbox is fixedly connected to the inner side of the testing box; a sealing sleeve is fixedly connected to the upper end of the sandbox; a material pump is installed on the outside of the sandbox; the input end of the material pump is fixedly connected to the output end of the sealing sleeve; the output end of the material pump communicates with the inner side of the closed cavity. By setting up a sandbox, a material pump, and a closed cavity, and utilizing the colored glitter fine sand installed inside the sandbox, fine sand can be poured in, making the breaks and gaps on the plug more obvious. Since the fine sand is easy to clean, it has little impact on the plug itself. After simple cleaning, it can be directly classified and proceed to the next process, improving testing efficiency and making it more practical.

Description

Technical Field

[0001] This utility model belongs to the field of automotive wiring harness testing technology, and more specifically, relates to a wiring harness plug airtightness testing device. Background Technology

[0002] A wiring harness is an assembly consisting of contact terminals and wires / cables crimped together, then covered with a molded insulator or metal casing, and finally bundled together to form a circuit. As a crucial component inside a vehicle, the quality and safety of the vehicle during operation are directly related to its wiring harness. To ensure quality, wiring harnesses undergo various tests before leaving the factory. Air tightness testing is one of these tests.

[0003] A device for testing the air tightness of automotive wiring harnesses, as described in patent application CN202322840909.5, includes a base plate. A first mounting plate is fixedly connected to one end of the upper surface of the base plate, and a fixing plate is fixedly connected to the other end of the upper surface of the base plate. A threaded rod is rotatably connected between the first mounting plate and the fixing plate. A motor is fixedly connected to the outer wall of the fixing plate, and the drive end of the motor is fixedly connected to the shaft end of the threaded rod. A second mounting plate is threadedly connected to the threaded rod, and guide rods are slidably connected to both ends of the bottom of the second mounting plate. This invention, through the arrangement of the first mounting plate, fixing plate, threaded rod, motor, second mounting plate, guide rod, plug, and testing structure, enables the straightening testing of automotive wiring harnesses of different lengths, significantly improving the accuracy of automotive wiring harness air tightness testing. It solves the problems of low accuracy in automotive wiring harness bending testing and inconvenience in testing automotive wiring harnesses of different lengths in the prior art.

[0004] However, the aforementioned automotive wiring harness airtightness testing device has low testing efficiency and cannot check whether there are any breaks on the surface of the plug, making it impractical. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a wire harness plug airtightness testing device, which improves testing efficiency and is more practical.

[0006] This utility model discloses a wire harness plug airtightness testing device, comprising a testing box; anti-loosening rings are embedded on both sides of the testing box; a motor is fixedly connected to the lower end of the testing box; a lead screw is fixedly connected to the output end of the motor; the lead screw is rotatably connected to the testing box; a slider is threadedly connected to the lead screw; a snap-fit ​​block is fixedly connected to the upper end of the slider; a testing module is fixedly connected to one side of the testing box; a closed cavity is also included, covering the outside of the testing module; a sand box is fixedly connected to the inside of the testing box; a sealing sleeve is fixedly connected to the upper end of the sand box; a material pump is provided on the outside of the sand box; the input end of the material pump is fixedly connected to the output end of the sealing sleeve; the output end of the material pump is connected to the inside of the closed cavity.

[0007] Preferably, a sand leakage hole is provided on the lower side of the testing box.

[0008] Preferably, a rubber anti-loosening sheet is provided at the center of each of the anti-loosening rings.

[0009] Preferably, a leak-proof plug is embedded on the lower side of the sealed cavity.

[0010] Preferably, a corrugated pipe is fixedly connected to the outer side of the snap-fit ​​block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] (1) By setting up a sand box, a pump, and a closed chamber, the colored glitter fine sand set inside the sand box can be used to fill the colored glitter fine sand, making the cracks and gaps on the plug more obvious. Since the fine sand is easy to clean, it has little impact on the plug itself. After simple cleaning, it can be directly classified and entered into the next process, which improves the detection efficiency and is more practical.

[0013] (2) By setting up a corrugated pipe, fine sand inside the closed cavity is prevented from leaking out, thus improving the detection efficiency;

[0014] (3) By setting anti-loosening rings, the cable is fixed, which improves the detection efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0017] The following are the labels in the diagram: 10. Detection box; 11. Motor; 12. Anti-loosening ring; 13. Sand leakage hole; 14. Detection module; 15. Enclosed cavity; 16. Pump; 17. Sealing sleeve; 18. Sand box; 19. Lead screw; 20. Slider; 21. Snap-fit ​​block; 22. Bellows; 23. Leakage plug. Detailed Implementation

[0018] Specific Implementation Example 1: Please refer to... Figure 1-2A wire harness plug airtightness testing device includes a testing box 10; anti-loosening rings 12 are embedded on both sides of the testing box 10; a motor 11 is fixedly connected to the lower end of the testing box 10; a lead screw 19 is fixedly connected to the output end of the motor 11; the lead screw 19 is rotatably connected to the testing box 10; a slider 20 is threadedly connected to the lead screw 19; a locking block 21 is fixedly connected to the upper end of the slider 20; a testing module 14 is fixedly connected to one side of the testing box 10; and a closed cavity 15 is covered outside the testing module 14; a sandbox 18 is fixedly connected to the inner side of the testing box 10; the upper end of the sandbox 18... A fixed sealing sleeve 17 is provided; a material pump 16 is provided on the outside of the sand box 18; the input end of the material pump 16 is fixedly connected to the output end of the sealing sleeve 17; the output end of the material pump 16 is connected to the inside of the closed cavity 15; by setting up the sand box 18, the material pump 16, and the closed cavity 15, the colored glitter fine sand provided on the inside of the sand box 18 can be used to fill the colored glitter fine sand, making the breaks and gaps on the plug more obvious. Since the fine sand is easy to clean, it has little impact on the plug itself. After simple cleaning, it can be directly classified and entered into the next process, which improves the detection efficiency and is more practical.

[0019] Please see Figure 1 The detection box 10 has a sand leakage hole 13 on its lower side.

[0020] Please see Figure 1 Each of the anti-loosening rings 12 has a rubber anti-loosening plate at its center; by setting the anti-loosening rings 12, the cable is fixed by the anti-loosening rings 12, which improves the detection efficiency.

[0021] Please see Figure 2 A leak-proof plug 23 is embedded on the lower side of the sealed cavity 15.

[0022] Please see Figure 2 The outer side of the snap-fit ​​block 21 is fixedly connected to the corrugated pipe 22; by setting the corrugated pipe 22, fine sand inside the closed cavity 15 is prevented from leaking out, thus improving the detection efficiency.

[0023] During operation, the cable is passed through the anti-loosening ring 12 and the locking block 21 on the left side, and the cable end is then secured inside the corrugated tube 22. The corrugated tube 22 is then pulled in to secure the cable. The motor 11 is started, and its output drives the lead screw 19 to rotate. The cable is then loosened and pulled close to the detection module 14. The cable harness plug is then inserted into the corresponding position on the detection module 14. The locking block 21 is pressed against the outer end face of the sealed cavity 15. The pump 16 is then started, drawing colored glitter sand from inside the sand box 18 and injecting it into the detection module 14 from its output. The continuous injection of sand increases the pressure inside the sealed cavity 15. Since defective cable harness plugs may have minute cracks and small defects invisible to the naked eye under normal conditions, this process is necessary. The fine sand seeps into the inside of the wire harness plug under pressure, getting stuck in the small opening or flowing into the gaps. After a period of time, the pump 16 is turned off, and the motor 11 is started to pull the wire harness plug out. As the plug is pulled out and shaken, the floating sand on the surface is shaken off. Then check if any fine sand is stuck inside the plug. Because the sand is colored and contains glitter, the gaps on the plug are clearly visible. After cleaning the sand with a blower or other device, it will not affect the subsequent use of the standard plug. After multiple tests, a lot of fine sand may remain inside the test box 10. By tilting the test box 10, the sand can be poured out through the sand leakage hole 13 without affecting subsequent tests.

[0024] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0025] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0026] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A wire harness plug airtightness testing device, comprising a testing box (10); anti-loosening rings (12) are embedded on both sides of the testing box (10); a motor (11) is fixedly connected to the lower end of the testing box (10); a lead screw (19) is fixedly connected to the output end of the motor (11); the lead screw (19) is rotatably connected to the testing box (10); a slider (20) is threadedly connected to the lead screw (19); a snap-fit ​​block (21) is fixedly connected to the upper end of the slider (20); a testing module (14) is fixedly connected to one side of the testing box (10); characterized in that, It also includes a closed cavity (15) covering the outside of the detection module (14); a sand box (18) is fixedly connected to the inside of the detection box (10); a sealing sleeve (17) is fixedly connected to the upper end of the sand box (18); a material pump (16) is provided on the outside of the sand box (18); the input end of the material pump (16) is fixedly connected to the output end of the sealing sleeve (17); the output end of the material pump (16) is connected to the inside of the closed cavity (15).

2. The wire harness plug airtightness testing device according to claim 1, characterized in that: The test box (10) has a sand leakage hole (13) on its lower side.

3. The wire harness plug airtightness testing device according to claim 1, characterized in that: A rubber anti-loosening sheet is provided at the center of each of the aforementioned anti-loosening rings (12).

4. The wire harness plug airtightness testing device according to claim 1, characterized in that: A leak-proof plug (23) is embedded on the lower side of the closed cavity (15).

5. The wire harness plug airtightness testing device according to claim 1, characterized in that: The outer side of the snap-fit ​​block (21) is fixedly connected to the bellows (22).

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