A harness detection tool

Abstract

The application relates to the technical field of wire harness detection, in particular to a wire harness detection tool, which comprises a bottom plate, a front end fixing device and a rear end fixing device installed on the bottom plate, the front end fixing device is used for mounting the terminals of the wire harness, the rear end fixing device is used for mounting the wires of the wire harness, a jacking device is arranged at a position between the front end fixing device and the rear end fixing device on the bottom plate, the jacking device is vertically arranged, the upper end of the jacking device is used for abutting against the middle position of the wire harness, and a pressure sensor for detecting the pressure of the jacking device on the wire harness is arranged below the jacking device. The application has the effect of detecting the connection firmness between the wires and the terminals.

Description

Technical Field

[0001] This application relates to the technical field of wire harness inspection, and more particularly to a wire harness inspection fixture. Background Technology

[0002] Wiring harness inspection primarily involves controlling the production quality of wiring harnesses during the manufacturing process, reducing the outflow of defective products, and promptly identifying and discarding them to avoid unnecessary assembly and cost waste. A wiring harness consists of wires and terminals. Terminals secure one end of the wire and facilitate installation of the wiring harness into a vehicle.

[0003] A wire harness testing fixture is disclosed in the related technology, including a tester and a test lead. The test lead is connected to the tester, and a plug is connected to the end of the test lead away from the tester. The plug is used to mate with the terminals of the wire harness. After the terminals at both ends of the wire in the wire harness are installed, the quality of the wire harness needs to be tested. During the test, the terminals at both ends of the wire are connected to the plug of the tester through the test lead. The plug is equipped according to the wire harness being tested. Then the tester can obtain the connection status between the wire and the terminal, that is, ensure that the wire and the terminal are in a energized state.

[0004] In the above structure, if a loose connection occurs between the wire and the terminal, the wire and the terminal can conduct electricity, but the connection between the wire and the terminal is not firm. Summary of the Invention

[0005] In order to test the connection strength between the wire and the terminal, this application provides a wire harness testing fixture.

[0006] This application provides a wire harness testing fixture, which adopts the following technical solution:

[0007] A wire harness inspection fixture includes a base plate and a front-end fixing device and a rear-end fixing device mounted on the base plate. The front-end fixing device is used to install the terminals of the wire harness; the rear-end fixing device is used to install the wires of the wire harness. A lifting device is provided on the base plate between the front-end fixing device and the rear-end fixing device. The lifting device is vertically arranged, and its upper end is used to abut against the middle of the wire harness. A pressure sensor is provided below the lifting device to detect the pressure exerted by the lifting device on the wire harness.

[0008] By adopting the above technical solution, during use, the front-end fixing device is used to install the terminals of the wire harness, and the rear-end fixing device is used to install the wires of the wire harness, thus fixing both ends of the wire harness. The lifting device is positioned between the front-end fixing device and the rear-end fixing device. When the upper end of the lifting device approaches the middle of the wire harness, it exerts a force on the wire harness. At the same time, the pressure sensor detects the force applied to the wire harness by the lifting device. After the pressure sensor reaches the set pressure, the wires and terminals bear the force exerted on the wire harness by the lifting device, thereby detecting whether the wires and terminals have become detached, thus detecting the connection firmness between the wires and terminals.

[0009] Preferably, the front-end fixing device includes a mounting base, which is fixed to a base plate; the upper surface of the mounting base is used to place a terminal; a plug for connecting the terminal is provided on the mounting base; the plug is slidably fitted on the mounting base, and a baffle is provided on the mounting base at a position opposite to the direction of the plug; a notch for placing a wire is provided in the middle of the baffle.

[0010] By adopting the above technical solution, the mounting base is fixed on the base plate. When the terminal is installed on the front fixing device, the terminal is placed on the upper surface of the mounting base from top to bottom. Then, the wire is inserted through the notch in the middle of the baffle. Then, the plug is connected to the terminal to fix the terminal, which facilitates the installation and removal of the terminal and improves the efficiency of testing.

[0011] Preferably, the plug is connected to a drive assembly, the drive assembly has a return spring and a slider, the slider is slidably engaged on the mounting base and extends to the upper surface of the mounting base, the plug is fixedly connected to the slider, and the return spring is used to abut against the slider and drive the slider to move closer to the baffle.

[0012] By adopting the above technical solution, the reset spring abuts against the slider, so that the force of the reset spring is used to drive the slider to move closer to the baffle. Then, after the terminal is placed between the baffle and the plug, the slider can automatically connect the plug to the terminal.

[0013] Preferably, a lever is provided above the plug. The lever is L-shaped and a fixing bolt is connected to the lever. The fixing bolt passes through the lever and the plug and is threaded to the slider. One end of the lever is vertically set, and the other end extends horizontally in the direction of the lever plate and extends out of the plug. The lever plate is used to pull against the top of the terminal.

[0014] By adopting the above technical solution, a fixing bolt is connected to the dial block, and the fixing bolt passes through the dial block and the plug and is threaded onto the slider, which makes it convenient for the plug to be replaced according to different wires. At the same time, the vertical part of the dial block is used to make it convenient for the operator to pull the plug, while the horizontal part of the dial block along the plug can block the top of the terminal, further improving the firmness of the terminal fixation.

[0015] Preferably, the rear-end fixing device includes a second mounting base and a clamping assembly. A conductive block is fixedly disposed on the second mounting base, and a groove for placing a wire is formed on the conductive block. The conductive block is used to connect the detection wire. The clamping assembly includes a jaw, which extends above the groove to abut against the side wall of the end of the wire in the groove.

[0016] By adopting the above technical solution, the clamping jaws in the clamping assembly are located above the wire groove, squeezing the end of the wire into the wire groove. The conductive block is connected to the wire through the wire groove. After the clamping jaws are opened, the wire can be placed into the wire groove more easily, which facilitates the installation of the wire harness on the rear fixing device and improves the efficiency of the test.

[0017] Preferably, a moving device is provided below the lifting device, the moving device including a movable seat that moves along the length of the conductor; the lifting device and the pressure sensor are fixed on the movable seat; the lifting device includes rollers for rolling connection to the conductor.

[0018] By adopting the above technical solution, the mobile device includes a mobile base, on which a lifting device and a pressure sensor are installed. When the mobile base moves towards the rear fixing device with the lifting device, the pressure detected by the pressure sensor should not be greater than the set detection pressure, so that the wire is detached from the rear fixing device, ensuring that the force between the wire and the terminal does not exceed the pulling force during detection when the wire harness is removed.

[0019] Preferably, the moving device further includes a drive screw and a drive motor. A slide rail is fixedly provided on the base plate, and the slide rail is arranged along the length direction of the conductor. The moving seat is slidably fitted on the slide rail. The drive screw is arranged parallel to the slide rail. The drive motor is fixed on the base plate, and the output shaft of the drive motor is coaxially fixed with the drive screw. The drive screw is threadedly connected to the moving seat.

[0020] By adopting the above technical solution, when the drive motor is working, the drive motor can drive the drive screw to rotate. The drive screw is threadedly connected to the moving seat, so that when the drive motor is working, it can automatically move the moving seat along the length direction of the slide rail.

[0021] Preferably, the middle part of the gripper is rotatably connected to the side wall of the second mounting base, the upper end of the gripper is used to abut against the side wall of the end of the wire, and a clamping spring is provided between the lower end of the gripper and the second mounting base. The clamping spring is connected to a pressure adjusting component for adjusting the spring force of the clamping spring.

[0022] By adopting the above technical solution, a clamping spring is provided between the lower end of the gripper and the second mounting base, and the clamping spring is connected to a pressure adjustment component. The clamping force of the gripper on the wire can be adjusted by the pressure adjustment component, so that the wire can automatically fall off the gripper during the process of the lifting device moving to the rear fixing device.

[0023] Preferably, the pressure regulating assembly includes a clamping block, a driving block, and a driving member. The clamping block and the driving block are perpendicular to each other and are slidably connected to the second mounting base. The clamping spring abuts between the clamping block and the gripper. The clamping block has a first inclined surface. The driving block has a second inclined surface parallel to the first inclined surface. The driving member is connected to the second mounting base and is used to push the second inclined surface on the driving block to press against the first inclined surface.

[0024] By adopting the above technical solution, a clamping spring is set between the clamping block and the gripper. When the driving block moves closer to the clamping block under the action of the driving component, the second inclined surface presses against the first inclined surface, thereby causing the clamping block to move closer to the gripper and adjusting the elastic force of the clamping spring.

[0025] Preferably, the front-end fixing device includes a mounting base one; the rear-end fixing device includes a mounting base two; the base plate has multiple elongated grooves, and connecting bolts are provided in the elongated grooves, the length direction of the elongated grooves is parallel to the length direction of the wire harness; the connecting bolts pass through the elongated grooves and are threadedly connected to mounting base one or mounting base two.

[0026] By adopting the above technical solution, a long groove is opened on the base plate, and a connecting bolt is set in the long groove. When mounting seat one or mounting seat two is fixed to the base plate by the connecting bolt, the position of mounting seat one and mounting seat two can be adjusted along the length of the long groove by loosening the connecting bolt, so as to adapt to the detection of wire harnesses of different lengths.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When the lifting device moves towards the middle of the wire harness from the top, it exerts a force on the wire harness. At the same time, the pressure sensor detects the force applied to the wire harness by the lifting device. After the pressure sensor reaches the set pressure, it checks whether the wire and the terminal are disconnected, so as to detect the connection between the wire and the terminal.

[0029] 2. By placing the terminal onto the upper surface of mounting base one from top to bottom, and then connecting the plug to the terminal, the installation and removal of the terminal is facilitated, and the testing efficiency is improved;

[0030] 3. When the lifting device is moved to the rear fixing device by the movable seat, the pressure detected by the pressure sensor should not be greater than the set detection pressure. The wire is then detached from the rear fixing device to ensure that the force between the wire and the terminal does not exceed the tension during detection when the wire harness is removed. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the front-end fixing device in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram of the structure of the rear-end fixing device in the embodiments of this application;

[0034] Figure 4 This is a schematic diagram of the connection structure of the pressure regulating component in an embodiment of this application;

[0035] Figure 5 yes Figure 1 A magnified view of part A in the middle;

[0036] Figure 6 This is an exploded view of the connection structure between mounting base one and mounting base two in an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Base plate; 11. Long groove; 12. Connecting bolt; 2. Front-end fixing device; 21. Mounting base one; 211. Guide groove; 22. Plug; 23. Drive assembly; 231. Return spring; 232. Slider; 233. Toggle block; 2331. Receiving cavity; 234. Guide rod; 235. Fixing bolt; 24. Stop block; 25. Baffle; 251. Notch; 3. Rear-end fixing device; 31. Mounting base two; 311. Guide hole; 312. Mounting hole; 32. Clamping assembly; 321. Gripper; 322. Clamping spring; 323. Rubber pad; 33. Conductive block; 331. Wire groove; 34. Pressure regulating component; 341. Clamping block; 3411. First inclined surface; 342. Drive block; 3421. Second inclined surface; 343. Drive component; 35. Sleeve; 36. Nut; 4. Wire harness; 41. Wire; 42. Terminal; 5. Detection wire; 6. Lifting device; 61. Electric cylinder; 62. Roller; 7. Pressure sensor; 8. Moving device; 81. Drive screw; 82. Drive motor; 83. Moving seat; 84. Slide rail; 9. U-shaped groove; 91. Clamping bolt. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0039] This application discloses a wire harness testing fixture, as shown in the embodiments below. Figure 1 The system includes a base plate 1, on which a front-end fixing device 2 and a rear-end fixing device 3 are mounted. A wire harness 4 is mounted on the front-end fixing device 2 and the rear-end fixing device 3. The wire harness 4 includes a wire 41 and a terminal 42. The terminal 42 is fixed to one end of the wire 41. The front-end fixing device 2 is used to install the terminal 42, and the rear-end fixing device 3 is used to connect the end of the wire 41 away from the terminal 42. Multiple rear-end fixing devices 3 can be provided. In this embodiment, two are provided. The end of the wire 41 away from the terminal 42 is a copper wire that is exposed. Detection wires 5 for detecting the conductivity of the wire harness 4 are installed on both the front-end fixing device 2 and the rear-end fixing device 3. Then, the detection wires 5 are connected to a detector to detect the wire harness 4.

[0040] refer to Figure 1 A lifting device 6 is installed on the base plate 1, positioned at the middle of the wire 41. The lifting device 6 includes an electric cylinder 61 and a roller 62. The electric cylinder 61 is vertically mounted, and the roller 62 is rotatably mounted on the upper end of the electric cylinder 61. The roller 62 is used to abut against the lower side wall of the wire 41. The output length of the electric cylinder 61 can measure the length of the wire 41. A pressure sensor 7 is installed below the electric cylinder 61 to measure the force exerted by the electric cylinder 61 on the wire 41. By using the pressure sensor 7 to abut against the wire 41 under a set pressure, the connection strength between the wire 41 and the terminal 42 can be determined. At the same time, after the pressure detected by the pressure sensor 7 reaches the set pressure, the output length of the electric cylinder 61 can also be used to calculate the length of the wire 41. That is, whether the length of the wire harness 4 is qualified can also be judged by the calculation result. Therefore, both the connection quality and length of the wire harness 4 can be detected.

[0041] refer to Figure 2The front fixing device 2 includes a mounting base 21 and a plug 22 disposed on the mounting base 21. The plug 22 is connected to a drive assembly 23. The drive assembly 23 includes a return spring 231, a slider 232 and a toggle block 233. The slider 232 is located inside the mounting base 21, and a guide groove 211 for sliding connection of the slider 232 is formed in the mounting base 21. The return spring 231 is located in the guide groove 211, and a stop block 24 is fixedly disposed at one end of the guide groove 211 on the side wall of the mounting base 21. One end of the return spring 231 abuts against the stop block 24, and the other end abuts against the slider 232. The length direction of the guide groove 211 is parallel to the direction in which the plug 22 is inserted into the terminal 42. The slider 232 has an internal cavity 2331 for mounting the return spring 231. A guide rod 234 is fixedly installed inside the cavity 2331. The guide rod 234 passes through the middle of the stop block 24 and slides in cooperation with the stop block 24. The return spring 231 is sleeved on the guide rod 234. This allows the return spring 231 to enter the cavity 2331 during movement, and the guide rod 234 also reduces the radial deformation of the return spring 231, improving its stability. The plug 22 is located on the top surface of the mounting base 21, and the slider 232 extends to a position flush with the top surface of the mounting base 21. One side of the plug 22 is attached to the top surface of the slider 232, and the other end is used to place the toggle block 233. A fixing bolt 235 is provided on the toggle block 233. The fixing bolt 235 passes vertically downward through the toggle block 233 and the plug 22 and is threaded onto the slider 232, thereby fixing the toggle block 233 to the plug 22 and the slider 232. The lever 233 is L-shaped, with its side facing upwards away from the plug 22. In use, the operator pulls the lever 233 upwards away from the terminal 42, causing the plug 22 to move away from the terminal 42. After inserting a new wire harness 4, releasing the lever 233 allows the return spring 231 to move the slider 232 closer to the terminal 42, allowing the plug 22 to engage with the terminal 42 on the wire harness 4. The side of the lever 233 connected to the slider 232 extends horizontally towards the terminal 42 and beyond the plug 22, ensuring that after the plug 22 is connected to the terminal 42, the horizontal portion of the lever 233 can block the terminal 42, facilitating easier fixation of the terminal 42. A baffle 25 is fixedly installed on the mounting base 21. The baffle 25 and the plug 22 face each other and are spaced apart. The baffle 25 is located on the vertical side wall of the mounting base 21. The side of the baffle 25 facing the plug 22 is used to place the terminal 42 and to block the terminal 42.Meanwhile, the baffle 25 has an oriented notch 251, which is used to place the wire 41 of the wire harness 4, thus facilitating the direct placement of the terminal 42 onto the upper surface of the mounting base 21 from top to bottom. The plug 22, in conjunction with the lever 233, fixes the terminal 42 onto the mounting base 21. The wire harness 4 is more easily fixed and removed on the front fixing device 2, improving the detection efficiency of the wire harness 4. The plug 22 is electrically connected to the detection wire 5, and the mounting base 21 is made of insulating material.

[0042] refer to Figure 3 The rear fixing device 3 includes a second mounting base 31 and a clamping assembly 32. The second mounting base 31 is made of insulating material and is fixed to the base plate 1. A conductive block 33 is fixedly disposed on the upper surface of the second mounting base 31. A wire groove 331 for placing the wire 41 is opened on the conductive block 33. The wire groove 331 is located at one end of the conductive block 33. The conductive block 33 is made of copper material. At the same time, the detection wire 5 is electrically connected to the conductive block 33. The clamping assembly 32 includes two jaws 321, which are located on two opposite sidewalls of the mounting base 31 and are positioned corresponding to the wire groove 331. The portion of the jaws 321 above the mounting base 31 extends toward the middle of the wire groove 331. The jaws 321 are used to abut against the upper sidewall of the wire 41 placed in the wire groove 331. When the wire 41 is in the wire groove 331, it is in a horizontal position. Since the jaws 321 abut against the sidewall of the end of the wire 41, the jaws 321 cooperate with the wire groove 331 to fix the wire 41 to the rear fixing device 3. A clamping spring 322 is provided between the gripper 321 and the mounting base 31 to abut against the gripper 321. The clamping spring 322 applies clamping force to the gripper 321 to ensure the conductive connection between the wire 41 and the conductive block 33. At the same time, the wire 41 will not fall off the conductive block 33 before the lifting device 6 reaches the set pressure of the pressure sensor 7. The middle part of the gripper 321 is rotatably connected to the side wall of the mounting base 31. When the lower parts of the two grippers 321 approach each other, the upper ends of the two grippers 321 move away from each other and are staggered from the wire groove 331. This allows the operator to place the exposed part of the wire 41 into the wire groove 331 from top to bottom. After releasing the two grippers 321, the gripper 321 automatically fixes the wire 41. A rubber pad 323 is fixedly provided at one end of the clamp 321 near the wire groove 331. The rubber pad 323 can clamp the wire 41 by deformation, and at the same time reduce the scratches on the wire 41.

[0043] refer to Figure 4A pressure regulating component 34 is provided inside the mounting base 31. The pressure regulating component 34 is used to adjust the clamping force of the two grippers 321 on the wire 41. The pressure regulating component 34 includes a clamping block 341, a driving block 342, and a driving component 343. A guide hole 311 is provided inside the mounting base 31, which passes through the mounting base 31 and has its two ends facing the two grippers 321 respectively. A sleeve 35 is fixedly provided on the lower part of the grippers 321 and facing the surface of the mounting base. One end of the clamping spring 322 is located inside the sleeve 35 and abuts against the gripper 321. The sleeve 35 can reduce the clamping spring 322 from falling off the gripper 321 during deformation. The clamping block 341 is slidably fitted in the guide hole 311, and the end of the clamping spring 322 away from the gripper 321 abuts against the clamping block 341. A first inclined surface 3411 is provided on the side of the clamping block 341 away from the clamping spring 322. A mounting hole 312 perpendicular to the guide hole 311 is provided in the mounting base 31. One end of the mounting hole 312 is located on the side wall of the mounting base 31 and a nut 36 is fixedly installed thereon. The nut 36 is fixed to the mounting base 31 by screws, with the center of the nut 36 facing the mounting hole 312. The drive block 342 is slidably fitted in the mounting hole 312. The drive member 343 is a screw rod, which is threadedly connected to the nut 36, so that one end of the screw rod in the mounting hole 312 abuts against the drive block 342. The end of the drive member away from the drive member 343 has a second inclined surface 3421 parallel to the first inclined surface 3411. Two clamping blocks 341 are provided on both sides of the driving block 342. When the driving block 342 is driven to approach the clamping block 341, the two clamping blocks 341 move along the guide hole 311 toward the gripper 321, thereby squeezing the two clamping springs 322. The elastic force of the two clamping springs 322 is adjusted to adapt to the detection force required by different wires 41.

[0044] refer to Figure 5A moving device 8 is fixedly installed on the upper surface of the base plate 1. The moving device 8 includes a drive screw 81, a drive motor 82, and a moving seat 83. A slide rail 84 is fixedly installed on the upper surface of the base plate 1. The length direction of the slide rail 84 is parallel to the direction of the wire 41, and the rolling direction of the roller 62 is parallel to the length direction of the slide rail 84. The moving seat 83 is slidably fitted on the slide rail 84. The drive motor 82 is fixed on the base plate 1. The output shaft of the drive motor 82 is coaxially fixed with the drive screw 81. The drive screw 81 is parallel to the slide rail 84 and is threadedly connected to the moving seat 83. When the drive screw 81 is driven by the drive motor 82, the drive screw 81 will drive the moving seat 83 to move along the slide rail 84, fixing the pressure sensor 7 and the lifting device 6 on the moving seat 83. In use, the lifting device 6 is first moved to the middle position of the wire 41. After the length and connection firmness of the wire harness 4 are checked, the drive motor 82 drives the drive screw 81 to rotate. The drive screw 81 drives the moving seat 83 to move towards the rear fixing device 3, so that the roller 62 moves along the length of the wire 41. During the movement, the pressure sensor 7 detects the pressure on the wire harness 4 and maintains it at the set pressure value. Since the lifting device 6 is close to the rear fixing device 3, the resistance force generated by the lifting device 6 on the wire harness 4 is more distributed at the connection between the wire 41 and the rear fixing device 3. The tension at the connection between the terminal 42 and the wire 41 will be less than the maximum tension detected. Therefore, the pressure adjustment device adjusts the pressure of the two grippers 321 on the wire 41 to a suitable position so that the moving device 8 can pull the wire 41 directly out from the position of the two grippers 321 through the lifting device 6. At the same time, it can also ensure that the tension at the connection between the wire 41 and the terminal 42 does not exceed the tension detected.

[0045] refer to Figure 6 The base plate 1 has multiple elongated slots 11, each corresponding to either mounting base 21 or mounting base 31. The length of each slot 11 is along the placement direction of the wire 41. Each slot 11 has at least one connecting bolt 12, which passes through the slot 11 and is threaded onto mounting base 21 or mounting base 31. This fixes mounting base 21 and mounting base 31 to the base plate 1, and loosening the connecting bolt 12 allows adjustment of the position of mounting base 21 or mounting base 31 to test wire harnesses 4 of different lengths. A U-shaped groove 9 with an upward opening is provided on the upper surface of the mounting base 31. The conductive block 33 is placed in the U-shaped groove 9. The conductive block 33 is then connected to the detection wire 5. The detection wire 5 is placed between the bottom of the U-shaped groove 9 and the conductive block 33. Then, a clamping bolt 91 is connected to the conductive block 33. The clamping bolt 91 passes through the conductive block 33 and is threadedly connected to the mounting base 31, which makes it easier to connect the conductive block 33 to the detection wire 5.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wire harness inspection fixture, characterized in that: The device includes a base plate (1) and a front-end fixing device (2) and a rear-end fixing device (3) mounted on the base plate (1). The front-end fixing device (2) is used to install the terminals (42) of the wire harness (4). The rear-end fixing device (3) is used to install the wires (41) of the wire harness (4). A lifting device (6) is provided on the base plate (1) between the front-end fixing device (2) and the rear-end fixing device (3). The lifting device (6) is vertically arranged. The upper end of the lifting device (6) is used to abut against the middle of the wire harness (4). A pressure sensor (7) is provided below the lifting device (6) to detect the pressure of the lifting device (6) on the wire harness (4). The front-end fixing device (2) includes a mounting base (21) which is fixed on the base plate (1). The upper surface of the mounting base (21) is used to place the terminal (42). The mounting base (21) is provided with a plug (22) for connecting the terminal (42). The plug (22) is slidably fitted on the mounting base (21). A baffle (25) is provided on the mounting base (21) at a position opposite to the direction of the plug (22). A notch (251) for placing the wire (41) is opened in the middle of the baffle (25). The plug (22) is connected to a drive assembly (23), which includes a return spring (231) and a slider (232). The slider (232) is slidably fitted on the mounting base (21) and extends to the upper surface of the mounting base (21). The plug (22) is fixedly connected to the slider (232). The return spring (231) is used to abut against the slider (232) and drive the slider (232) to move closer to the baffle (25).

2. The wire harness testing fixture according to claim 1, characterized in that: A toggle block (233) is provided above the plug (22). The toggle block (233) is L-shaped and a fixing bolt (235) is connected to the toggle block (233). The fixing bolt (235) passes through the toggle block (233) and the plug (22) and is threaded to the slider (232). One end of the toggle block (233) is vertically set, and the other end extends horizontally in the direction of the toggle plate and extends out of the plug (22). The toggle plate is used to abut against the top of the terminal (42).

3. The wire harness testing fixture according to claim 1, characterized in that: The rear fixing device (3) includes a second mounting base (31) and a clamping assembly (32). A conductive block (33) is fixedly installed on the second mounting base (31). A wire groove (331) for placing a wire (41) is opened on the conductive block (33). The conductive block (33) is used to connect the detection wire (5). The clamping assembly (32) includes a jaw (321). The jaw (321) extends above the wire groove (331) to abut against the side wall of the end of the wire (41) in the wire groove (331).

4. The wire harness inspection fixture according to claim 3, characterized in that: A moving device (8) is provided below the lifting device (6), the moving device (8) includes a moving seat (83) that moves along the length of the conductor (41); the lifting device (6) and the pressure sensor (7) are fixed on the moving seat (83); the lifting device (6) includes a roller (62) which is used to roll on the conductor (41).

5. The wire harness inspection fixture according to claim 4, characterized in that: The moving device (8) further includes a drive screw (81) and a drive motor (82). A slide rail (84) is fixedly provided on the base plate (1). The slide rail (84) is arranged along the length direction of the wire (41). The moving seat (83) is slidably fitted on the slide rail (84). The drive screw (81) is arranged parallel to the slide rail (84). The drive motor (82) is fixed on the base plate (1). The output shaft of the drive motor (82) is coaxially fixed with the drive screw (81). The drive screw (81) is threadedly connected to the moving seat (83).

6. The wire harness inspection fixture according to claim 4, characterized in that: The middle part of the gripper (321) is rotatably connected to the side wall of the mounting base (31). The upper end of the gripper (321) is used to abut against the side wall of the end of the wire (41). A clamping spring (322) is provided between the lower end of the gripper (321) and the mounting base (31). The clamping spring (322) is connected to a pressure adjusting component (34) for adjusting the elastic force of the clamping spring (322).

7. A wire harness testing fixture according to claim 6, characterized in that: The pressure regulating assembly (34) includes a clamping block (341), a driving block (342), and a driving member (343). The clamping block (341) and the driving block (342) are perpendicular to each other and are slidably connected on the second mounting base (31). The clamping spring (322) abuts between the clamping block (341) and the gripper (321). The clamping block (341) has a first inclined surface (3411). The driving block (342) has a second inclined surface (3421) parallel to the first inclined surface (3411). The driving member (343) is connected to the second mounting base (31) and is used to push the second inclined surface (3421) on the driving block (342) to press against the first inclined surface (3411).

8. The wire harness testing fixture according to claim 1, characterized in that: The front-end fixing device (2) includes a mounting base one (21); the rear-end fixing device (3) includes a mounting base two (31); the base plate (1) has multiple elongated grooves (11), and a connecting bolt (12) is provided in the elongated groove (11). The length direction of the elongated groove (11) is parallel to the length direction of the wire harness (4); the connecting bolt (12) passes through the elongated groove (11) and is threadedly connected to the mounting base one (21) or the mounting base two (31).

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