Automobile wire harness intelligent detection device

Abstract

This invention relates to the field of automotive wiring harness testing, and mainly discloses an intelligent testing device for automotive wiring harnesses. The device includes a worktable with an arc-shaped groove and a placement groove on its surface. A traction belt is provided at the telescopic end of the first electric push rod. An airbag is provided on the inner side of the clamping plate, and glass microspheres are placed inside the airbag. A temperature control frame is provided on the surface of the worktable. This invention uses a vacuum pump to create negative pressure inside the airbag. Simultaneously, the glass microspheres inside undergo a phase change due to mutual compression, instantly solidifying from a fluid to a rigid body, thus clamping the wiring harness. Because of the large contact area, the pressure per unit area is much lower than the yield strength of the insulation layer, avoiding damage to the wiring harness surface. The first electric push rod, in conjunction with the traction belt, facilitates the pulling of the testing table, causing it to swing. Then, in conjunction with a heating module, it facilitates testing the wiring harness at different temperatures, enabling dynamic testing and testing at different temperatures, reducing testing errors.

Description

Technical Field

[0001] This invention relates to the field of automotive wiring harness testing, and more specifically, to an intelligent automotive wiring harness testing device. Background Technology

[0002] Automotive wiring harnesses are often referred to as the "nerves and blood vessels" of a vehicle, and their connection reliability directly affects the vehicle's driving safety and functional stability. With the rapid development of new energy vehicles and intelligent driving technologies, the structure of automotive wiring harnesses is becoming increasingly complex, the number of connector terminals is growing exponentially, and extremely stringent requirements are being placed on the wiring harnesses' vibration resistance, fatigue resistance, and fretting wear resistance (such as USCAR-2 and LV214 standards). Therefore, efficient and accurate comprehensive testing of wiring harnesses before they leave the factory is a crucial step in quality control.

[0003] Existing testing devices often employ fixed-size rigid molds or simple pneumatic flat-jaw pliers for their clamping mechanisms. However, excessive clamping force can easily crush the wire harness insulation layer or even damage the internal conductors. Conversely, insufficient clamping force can cause displacement of the wire harness during testing, leading to misalignment between the test probe and the terminal, resulting in mechanical failures such as probe skew, bending, or even puncturing the terminal sheath. Furthermore, traditional testing devices can only perform continuity and insulation tests in a static state. However, automotive wiring harnesses are subjected to dynamic alternating stresses caused by engine vibration and temperature changes during actual operation, which can lead to errors in the test results when tested in a static state.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent detection device for automotive wiring harnesses to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An intelligent testing device for automotive wiring harnesses includes a worktable with an arc-shaped groove and a placement groove on its surface. A first electric push rod is disposed in the placement groove, and a traction belt is disposed at the telescopic end of the first electric push rod. An arc-shaped seat is disposed in the arc-shaped groove, and a testing platform is disposed on the surface of the arc-shaped seat. A groove is disposed on the surface of the arc-shaped groove, and a rod-shaped groove is disposed at the bottom of the groove.

[0008] The surface of the testing platform is provided with an installation groove, the surface of the installation groove is provided with a second electric push rod, the lifting end of the second electric push rod is provided with a support frame, the surface of the support frame is provided with a positioning plate, the surface of the positioning plate is provided with a third electric push rod, the telescopic end of the third electric push rod is provided with an installation tube, the surface of the installation tube is provided with a clamping plate, the inner side of the clamping plate is provided with an airbag, and the internal cavity of the airbag is provided with glass microspheres.

[0009] A temperature control frame is provided on the surface of the workbench, and a heating module is provided on the inner side of the temperature control frame.

[0010] Furthermore, the first electric push rod is fixedly connected to the inner side of the placement groove, and a support rod is provided on the side of the placement groove. A traction pulley is sleeved on the surface of the support rod, and the traction pulley is slidably connected to the support rod.

[0011] Furthermore, one end of the traction belt is fixedly connected to the bottom of the testing platform, and the other end of the traction belt is fixedly connected to the telescopic end of the first electric push rod after passing over the traction pulley. A weight-adding block is provided at the bottom of the testing platform.

[0012] Furthermore, the bottom of the arc-shaped seat is provided with a vertical plate, and the bottom of the vertical plate is provided with a guide rod. The guide rod is inserted into the rod-shaped groove, and the guide rod is slidably connected to the rod-shaped groove.

[0013] Furthermore, the temperature control frame is provided in two sets, which are symmetrically distributed about the detection stage. The heating module is provided in multiple sets, which are linearly arranged at equal intervals about the inner side of the temperature control frame. The heating module is a resistance wire heating.

[0014] Furthermore, the second electric push rod is fixedly connected to the surface of the mounting groove, the positioning plate is fixedly connected to the surface of the support frame, a support plate is provided on the side of the positioning plate, a guide plate is provided on the surface of the support plate, the guide plate contacts the telescopic end of the third electric push rod, and the telescopic end of the third electric push rod is slidably connected to the surface of the guide plate.

[0015] Furthermore, a vacuum pump is provided on the surface of the support frame, and an air extraction pipe is provided at the connecting end of the airbag. The air extraction pipe passes through the clamping plate and the mounting pipe and is connected to the vacuum pump. The mounting pipe is fixedly connected to the outer side of the clamping plate and to the telescopic end of the third electric push rod.

[0016] Furthermore, the surface of the internal cavity of the airbag is provided with rubber septa, and several sets of rubber septa are provided, with the several sets of rubber septa arranged linearly at equal intervals about the surface of the internal cavity of the airbag.

[0017] Furthermore, the airbag has a feed inlet on its side, and a sealing plate is provided on the surface of the feed inlet. Several groups of glass microspheres are provided, and the several groups of glass microspheres are evenly arranged between multiple groups of rubber partitions.

[0018] Furthermore, the mounting slots are provided in two sets, and the two sets of mounting slots are symmetrically distributed about the center line of the long side of the side of the testing table. After the second electric push rod telescopic end is reset, the bottom of the support frame contacts the surface of the mounting slot.

[0019] Compared with existing technologies, the present invention has the following beneficial effects: When the automotive wiring harness needs to be positioned for subsequent testing, the structure of the present invention uses a vacuum pump to create negative pressure inside the airbag, while the external atmospheric pressure compresses the airbag. At the same time, the glass microspheres inside are squeezed together and undergo a phase change, instantly solidifying from a fluid to a rigid body, which facilitates clamping the wiring harness. The suction inside the airbag ensures uniform pressure distribution, which not only ensures a large frictional force to prevent the wiring harness from shifting, but also, because of the large contact area, the pressure per unit area is much lower than the yield limit of the insulation layer, achieving tightness without damage and avoiding damage to the surface of the wiring harness. In addition, the first electric push rod, in conjunction with the traction belt, facilitates the pulling of the testing platform, making the testing platform swing. Then, in conjunction with the heating module, it is convenient to test the wiring harness at different temperatures, enabling dynamic testing and testing at different temperatures during the testing process, reducing testing errors. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an intelligent detection device for automotive wiring harnesses according to an embodiment of the present invention;

[0022] Figure 2 This is a partial cross-sectional view of the testing platform in an intelligent automotive wiring harness testing device according to an embodiment of the present invention.

[0023] Figure 3 yes Figure 2 Enlarged structural diagram at point A in the diagram;

[0024] Figure 4 yes Figure 2 Enlarged structural diagram at point B in the diagram;

[0025] Figure 5 This is a partial cross-sectional view of the workbench in an intelligent automotive wiring harness testing device according to an embodiment of the present invention.

[0026] Figure 6 yes Figure 5 Enlarged structural diagram at point C;

[0027] Figure 7 yes Figure 5 A magnified structural diagram at point D in the diagram;

[0028] Figure 8 This is a schematic diagram of the overall device structure after a set of temperature control frames are removed in an intelligent automotive wiring harness testing device according to an embodiment of the present invention.

[0029] Figure 9 yes Figure 8 Enlarged structural diagram at point E in the diagram;

[0030] Figure 10 This is a top view of the overall structure of an intelligent automotive wiring harness detection device according to an embodiment of the present invention.

[0031] Figure label:

[0032] 1. Workbench; 2. Arc-shaped groove; 3. Placement groove; 4. First electric push rod; 5. Traction belt; 6. Arc-shaped seat; 7. Testing table; 8. Groove; 9. Rod-shaped groove; 10. Mounting groove; 11. Second electric push rod; 12. Support frame; 13. Positioning plate; 14. Third electric push rod; 15. Mounting tube; 16. Clamping plate; 17. Airbag; 18. Glass microspheres; 19. Temperature control frame; 20. Heating module; 21. Support rod; 22. Traction pulley; 23. Weighting block; 24. Vertical plate; 25. Guide rod; 26. Support plate; 27. Evacuation pipe; 28. Vacuum pump; 29. ​​Rubber partition; 30. Sealing plate; 31. Guide slide plate. Detailed Implementation

[0033] The invention will now be further described with reference to the accompanying drawings and specific embodiments:

[0034] Example 1

[0035] Please see Figure 1-7 According to an embodiment of the present invention, an intelligent automotive wiring harness testing device includes a worktable 1. The worktable 1 has an arc-shaped groove 2 and a placement groove 3 on its surface. A first electric push rod 4 is disposed in the placement groove 3. A traction belt 5 is disposed at the telescopic end of the first electric push rod 4. The first electric push rod 4 facilitates the pulling of the traction belt 5, which in turn facilitates the subsequent swinging of the testing platform 7 to test the automotive wiring harness. An arc-shaped seat 6 is disposed in the arc-shaped groove 2. The testing platform 7 is disposed on the surface of the arc-shaped seat 6. A groove 8 is disposed on the surface of the arc-shaped groove 2. A rod-shaped groove 9 is disposed at the bottom of the groove 8. The rod-shaped groove 9 limits the arc-shaped seat 6 from detaching from the arc-shaped groove 2, thereby improving the stability of the displacement of the arc-shaped seat 6.

[0036] Please see Figures 8-10 As shown, the surface of the testing table 7 is provided with a mounting groove 10, and a second electric push rod 11 is provided on the surface of the mounting groove 10. The second electric push rod 11 facilitates the adjustment of the overall height of the clamping plate 16, which is convenient for adjusting different wire harness heights later, and facilitates subsequent testing. The lifting end of the second electric push rod 11 is provided with a support frame 12, and the surface of the support frame 12 is provided with a positioning plate 13. The surface of the positioning plate 13 is provided with a third electric push rod 14, which facilitates the pushing of the clamping plate 16, and facilitates the clamping and positioning of the wire harness using the clamping plate 16. The telescopic end of the three electric push rods 14 is provided with an installation tube 15. The surface of the installation tube 15 is provided with a clamping plate 16. The inner side of the clamping plate 16 is provided with an airbag 17. The internal cavity of the airbag 17 is provided with glass microspheres 18. The cooperation between the airbag 17 and the glass microspheres 18 facilitates the positioning of the wire harness and avoids damage to the surface of the wire harness. The surface of the worktable 1 is provided with a temperature control frame 19. The inner side of the temperature control frame 19 is provided with a heating module 20. After the wire harness is positioned, the heating module 20 is used to adjust the temperature of the surrounding environment of the wire harness, which facilitates the subsequent testing of the wire harness under different temperature environments.

[0037] Example 2, please refer to Figures 5-7 As shown, the first electric push rod 4 is fixedly connected to the inner side of the placement groove 3. A support rod 21 is provided on the side of the placement groove 3. A traction pulley 22 is sleeved on the surface of the support rod 21. The traction pulley 22 is slidably connected to the support rod 21. The sliding arrangement of the traction pulley 22 and the support rod 21 helps to reduce the friction on the surface of the traction belt 5 and improve the service life of the traction belt 5. One end of the traction belt 5 is fixedly connected to the bottom of the detection table 7, and the other end of the traction belt 5 passes around the traction pulley 22 and is fixedly connected to the telescopic end of the first electric push rod 4. When the first electric push rod 4 is activated and the traction pulley 22 pulls the traction belt 5, it can drive the arc-shaped seat 6 to swing, which facilitates the subsequent dynamic detection of the wire harness. The bottom of the detection platform 7 is provided with a weight block 23. The weight block 23 can increase the gravity on one side of the arc-shaped seat 6, so that after pulling one end of the arc-shaped seat 6, the weight block 23 can be used to make the arc-shaped seat 6 swing to the other side. This, combined with the pulling of the first electric push rod 4, can make the detection platform 7 swing continuously, thereby facilitating the simulation of the dynamic detection of the wire harness during use.

[0038] Please see Figures 2-6As shown in Table 1 below, the bottom of the arc-shaped seat 6 is provided with a vertical plate 24, and the bottom of the vertical plate 24 is provided with a guide rod 25. The guide rod 25 is inserted into the rod-shaped groove 9. By inserting the guide rod 25 into the rod-shaped groove 9, it is convenient for the guide rod 25 to rotate, and it also prevents the guide rod 25 from being pulled out of the rod-shaped groove 9. The setting of the rod-shaped groove 9 and the guide rod 25 also limits the arc-shaped seat 6 to prevent the arc-shaped seat 6 from detaching from the arc-shaped groove 2. The guide rod 25 and the rod-shaped groove 9 are slidably connected. Two sets of temperature control frames 19 are provided. The two sets of temperature control frames 19 are symmetrically distributed about the detection stage 7. Multiple sets of heating modules 20 are provided. The multiple sets of heating modules 20 are linearly arranged at equal intervals about the inner side of the temperature control frames 19. The heating modules 20 are resistance wire heating. The two sets of temperature control frames 19 cooperate with the heating modules 20 to facilitate the adjustment of the environmental problems around the wire harness after positioning.

[0039] Table 1

[0040]

[0041] Example 3, please refer to Figures 1-4 As shown, the second electric push rod 11 is fixedly connected to the surface of the mounting groove 10, the positioning plate 13 is fixedly connected to the surface of the support frame 12, the side of the positioning plate 13 is provided with a support plate 26, and the surface of the support plate 26 is provided with a guide plate 31. Through the cooperation between the guide plate 31 and the support plate 26, the extension end of the second electric push rod 11 is easily supported, reducing the pressure on the extension end of the second electric push rod 11. The support plate 26 is generally in the shape of an "L" plate. The guide plate 31 is in contact with the extension end of the third electric push rod 14. The guide plate 31 is generally in the shape of an arc plate. The extension end of the third electric push rod 14 is slidably connected to the surface of the guide plate 31.

[0042] A vacuum pump 28 is provided on the surface of the support frame 12. The vacuum pump 28, together with the suction pipe 27, facilitates the extraction and injection of air inside the airbag 17. The airbag 17 is provided with a suction pipe 27 at its connecting end. The suction pipe 27 passes through the clamping plate 16 and the mounting pipe 15 and is connected to the vacuum pump 28. The mounting pipe 15 is fixedly connected to the outer side of the clamping plate 16. In addition, the interior of the mounting pipe 15 is hollow to facilitate the passage of the suction pipe 27. The mounting pipe 15 is fixedly connected to the telescopic end of the third electric push rod 14.

[0043] Please see Figures 8-10The airbag 17 has rubber partitions 29 arranged on its internal cavity surface. Several sets of rubber partitions 29 are arranged to divide the interior of the airbag 17 into multiple regions. These regions facilitate the separation of multiple sets of glass microspheres 18 for subsequent use. The rubber partitions 29 are equidistantly linearly arranged about the internal cavity surface of the airbag 17. An inlet is provided on the side of the airbag 17, and a sealing plate 30 is provided on the surface of the inlet. The glass microspheres 18 are provided with… Several groups of glass microbeads 18 are evenly arranged between multiple groups of rubber partitions 29. When not in use, the airbag 17 is at normal pressure, the glass microbeads 18 are loose, and the airbag 17 is in a fluid state, gently wrapping the wire bundle of any shape (round, flat, branched), which also facilitates the positioning of wire bundles of different shapes. At this time, the contact pressure is extremely small and will not damage the insulation layer. Then, the vacuum pump 28 can be started to evacuate the air, so that the airbag 17 forms a negative pressure. The external atmospheric pressure presses the airbag 17 tightly against the wire bundle, thereby fixing the wire bundle for subsequent testing.

[0044] The mounting slot 10 has two sets, which are symmetrically distributed about the center line of the long side of the side of the detection table 7. After the extension end of the second electric push rod 11 is reset, the bottom of the support frame 12 contacts the surface of the mounting slot 10. When the second electric push rod 11 is not in use, the bottom of the support frame 12 can contact the surface of the mounting slot 10 to reduce the pressure on the lifting end of the second electric push rod 11 and improve the service life of the second electric push rod 11.

[0045] Through the above-described scheme of the present invention, when it is necessary to position the automotive wiring harness for subsequent testing, the vacuum pump 28 is used to evacuate air, creating a negative pressure inside the airbag 17. The external atmospheric pressure compresses the airbag 17, and at the same time, the glass microspheres 18 inside are squeezed together and undergo a phase change, instantly solidifying from a fluid to a rigid body, which facilitates clamping the wiring harness. As shown in the experiment in Table 2 below, the air evacuation inside the airbag 17 ensures a uniform pressure distribution, which not only guarantees a large frictional force to prevent the wiring harness from shifting, but also, because of the large contact area, the pressure per unit area is much lower than the yield limit of the insulation layer, achieving tightness without damage and avoiding damage to the surface of the wiring harness. In addition, the first electric push rod 4, in conjunction with the traction belt 5, facilitates the pulling of the testing platform 7, making the testing platform 7 swing. Then, in conjunction with the heating module 20, it is convenient to test the wiring harness at different temperatures, so that the wiring harness can be dynamically tested and tested at different temperatures during testing, reducing testing errors.

[0046] Table 2

[0047]

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent testing device for automotive wiring harnesses, comprising a workbench (1), characterized in that, The workbench (1) has an arc-shaped groove (2) and a placement groove (3) on its surface. A first electric push rod (4) is provided in the placement groove (3). A traction belt (5) is provided at the telescopic end of the first electric push rod (4). An arc-shaped seat (6) is provided in the arc-shaped groove (2). A detection table (7) is provided on the surface of the arc-shaped seat (6). A groove (8) is provided on the surface of the arc-shaped groove (2). A rod-shaped groove (9) is provided at the bottom of the groove (8). The testing platform (7) has an installation groove (10) on its surface. A second electric push rod (11) is provided on the surface of the installation groove (10). A support frame (12) is provided at the lifting end of the second electric push rod (11). A positioning plate (13) is provided on the surface of the support frame (12). A third electric push rod (14) is provided on the surface of the positioning plate (13). An installation tube (15) is provided at the telescopic end of the third electric push rod (14). A clamping plate (16) is provided on the surface of the installation tube (15). An airbag (17) is provided on the inner side of the clamping plate (16). Glass microspheres (18) are provided in the internal cavity of the airbag (17). The workbench (1) is provided with a temperature control frame (19), and a heating module (20) is provided on the inner side of the temperature control frame (19).

2. The intelligent detection device for automotive wiring harnesses according to claim 1, characterized in that, The first electric push rod (4) is fixedly connected to the inner side of the placement groove (3). A support rod (21) is provided on the side of the placement groove (3). A traction pulley (22) is sleeved on the surface of the support rod (21). The traction pulley (22) is slidably connected to the support rod (21).

3. The intelligent detection device for automotive wiring harnesses according to claim 1, characterized in that, One end of the traction belt (5) is fixedly connected to the bottom of the testing platform (7), and the other end of the traction belt (5) passes around the traction pulley (22) and is fixedly connected to the telescopic end of the first electric push rod (4). A weight-adding block (23) is provided at the bottom of the testing platform (7).

4. The intelligent detection device for automotive wiring harnesses according to claim 1, characterized in that, The bottom of the arc-shaped seat (6) is provided with a vertical plate (24), and the bottom of the vertical plate (24) is provided with a guide rod (25). The guide rod (25) is inserted into the rod-shaped groove (9), and the guide rod (25) is slidably connected to the rod-shaped groove (9).

5. The intelligent detection device for automotive wiring harnesses according to claim 1, characterized in that, The temperature control frame (19) is provided in two sets, and the two sets of temperature control frames (19) are symmetrically distributed about the detection stage (7). The heating module (20) is provided in multiple sets, and the multiple sets of heating modules (20) are arranged linearly at equal intervals about the inner side of the temperature control frame (19). The heating module (20) is a resistance wire heating.

6. The intelligent detection device for automotive wiring harnesses according to claim 1, characterized in that, The second electric push rod (11) is fixedly connected to the surface of the mounting groove (10), the positioning plate (13) is fixedly connected to the surface of the support frame (12), the side of the positioning plate (13) is provided with a support plate (26), the surface of the support plate (26) is provided with a guide plate (31), the guide plate (31) is in contact with the telescopic end of the third electric push rod (14), and the telescopic end of the third electric push rod (14) is slidably connected to the surface of the guide plate (31).

7. The intelligent detection device for automotive wiring harnesses according to claim 6, characterized in that, The support frame (12) is provided with a vacuum pump (28), and the air bag (17) is provided with an air extraction pipe (27) at the connecting end. The air extraction pipe (27) passes through the clamping plate (16) and the mounting pipe (15) and is connected to the vacuum pump (28). The mounting pipe (15) is fixedly connected to the outer side of the clamping plate (16) and the mounting pipe (15) is fixedly connected to the telescopic end of the third electric push rod (14).

8. The intelligent detection device for automotive wiring harnesses according to claim 7, characterized in that, The surface of the internal cavity of the airbag (17) is provided with rubber partitions (29), and there are several groups of rubber partitions (29). The several groups of rubber partitions (29) are arranged linearly at equal intervals with respect to the surface of the internal cavity of the airbag (17).

9. The intelligent detection device for automotive wiring harnesses according to claim 8, characterized in that, The airbag (17) has a feed inlet on its side, and a sealing plate (30) is provided on the surface of the feed inlet. Several sets of glass microspheres (18) are provided, and the several sets of glass microspheres (18) are evenly arranged between multiple sets of rubber partitions (29).

10. The intelligent detection device for automotive wiring harnesses according to claim 1, characterized in that, The mounting slot (10) has two sets, and the two sets of mounting slots (10) are symmetrically distributed about the center line of the long side of the test table (7). After the extension end of the second electric push rod (11) is reset, the bottom of the support frame (12) contacts the surface of the mounting slot (10).

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