Wire harness terminal tension tool

Abstract

This utility model provides a tensile testing fixture for wire harness terminals, including a tensile testing instrument body. The testing instrument body includes a main body, a display screen, a terminal fixing seat, and a base. A first threaded rod is threadedly connected to the base, and a movable block is rotatably engaged at the other end of the first threaded rod. A clamp is fixedly installed on the top of the movable block. A mounting seat is fixedly installed on the left side wall of the main body, and a U-shaped frame is slidably connected to the mounting seat. A second threaded rod is rotatably connected to the U-shaped frame, and a connecting plate is threadedly connected to the second threaded rod. An anti-loosening baffle is fixedly installed on the top of the connecting plate, and the anti-loosening baffle is slidably connected to the U-shaped frame. A fixing mechanism is provided on the mounting seat. The anti-loosening baffle of this design physically abuts against the handle, effectively limiting the possibility of rotation of the handle and threaded rod due to vibration, ensuring that the clamp maintains a stable clamping force during the test. This avoids the phenomenon of wire harness slippage caused by loose clamp.

Description

Technical Field

[0001] This utility model relates to the field of terminal tensile testing, and more specifically, to a wire harness terminal tensile testing fixture. Background Technology

[0002] Terminal pull-out testing is one of the core quality inspection methods for evaluating the reliability of electronic connectors. Its main purpose is to accurately measure the maximum axial pull-out force that a terminal can withstand after being crimped with a wire. This test uses a professional pull-out testing machine to simulate the tensile stress that a terminal may experience in actual use, verifying whether its crimp strength meets standard requirements. A passing result means that the connection point is strong and reliable, effectively preventing equipment failures caused by poor contact, short circuits, or power outages, thereby ensuring product safety and durability. This test is widely used in fields with extremely high requirements for electrical connection quality, such as automotive, home appliances, and aerospace, and is a crucial link in ensuring product performance and safety.

[0003] Existing terminal tensile testing devices typically use a clamping mechanism where the terminals on the wire harness are secured in matching slots, and the wire harness is fixed by a clamp driven by a threaded rod before tensile testing. During the test, the device itself is subjected to continuous and significant reaction forces, which can easily induce vibrations. These vibrations are transmitted to the threaded rod, potentially causing it to loosen and resulting in a lower measured tensile force value than the actual value, thus affecting the accuracy of the test results. Therefore, we have made improvements to this by proposing a wire harness terminal tensile testing fixture. Utility Model Content

[0004] To address the problems raised in the background art, this utility model provides the following technical solution:

[0005] A wire harness terminal tensioning fixture was developed to address the aforementioned issues.

[0006] The present invention is as follows:

[0007] The tensile tester body includes a main body, a display screen, a terminal fixing seat, and a base. A first threaded rod is threadedly connected to the base, and a movable block is rotatably engaged at the other end of the first threaded rod. A clamp is fixedly installed on the top of the movable block. A mounting seat is fixedly installed on the left side wall of the main body. A U-shaped frame is slidably connected to the mounting seat. A second threaded rod is rotatably connected to the U-shaped frame. A connecting plate is threadedly connected to the second threaded rod. An anti-loosening baffle is fixedly installed on the top of the connecting plate. The anti-loosening baffle is slidably connected to the U-shaped frame. A fixing mechanism is provided on the mounting seat.

[0008] As a preferred technical solution of this utility model, an extension plate is fixedly installed at the bottom of the clamp, and a first slider is fixedly installed on the extension plate. The first slider is slidably connected in a groove on the side wall of the base.

[0009] As a preferred technical solution of this utility model, a second slider is fixedly installed on the U-shaped frame, and the second slider is slidably connected in the groove on the mounting base.

[0010] As a preferred technical solution of this utility model, a third slider is fixedly installed at the bottom of the anti-loosening baffle, and the third slider is slidably connected in the groove on the U-shaped frame.

[0011] As a preferred technical solution of this utility model, the fixing mechanism includes a fixing pin disposed on the mounting base.

[0012] As a preferred technical solution of this utility model, the second slider is provided with a through groove, which matches the fixing pin.

[0013] As a preferred technical solution of this utility model, a first throttle is fixedly installed at one end of the first threaded rod.

[0014] As a preferred technical solution of this utility model, a second throttle is fixedly installed at the end of the second threaded rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In the solution of this utility model:

[0017] 1. By pushing the U-shaped frame upwards to its highest point and securing it with a pin, then rotating the second handle causes the second threaded rod to rotate. This rotation, through the threaded drive, moves the connecting plate closer to the first handle. As the connecting plate moves, it moves the anti-loosening baffle, which then presses against the first handle, creating a physical barrier. This design effectively limits the possibility of the handle and threaded rod rotating due to vibration, ensuring the clamping plate maintains a stable clamping force throughout the testing process. It avoids the wire harness slipping due to clamping plate loosening; and it solves the problem in existing technologies where vibration during testing is transmitted to the threaded rod, potentially causing it to loosen and resulting in a lower measured tensile force than the true value, thus affecting the accuracy of the test results. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of the wire harness terminal tensioning fixture provided by this utility model;

[0019] Figure 2 A schematic diagram of the first threaded rod structure of the wire harness terminal tensioning fixture provided by this utility model;

[0020] Figure 3 A schematic diagram of the first slider structure of the wire harness terminal tensioning fixture provided by this utility model;

[0021] Figure 4A schematic diagram of the fixing pin structure of the wire harness terminal tensioning fixture provided by this utility model;

[0022] Figure 5 A schematic diagram of the second slider structure of the wire harness terminal tensioning fixture provided by this utility model;

[0023] Figure 6 A schematic diagram of the third slider structure of the wire harness terminal tensioning fixture provided by this utility model.

[0024] The image shows:

[0025] 1. Tester body; 101. Main body; 102. Display screen; 103. Terminal fixing seat; 104. Base; 5. First threaded rod; 6. Moving block; 7. Clamp; 8. Mounting seat; 9. U-shaped frame; 10. Second threaded rod; 11. Connecting plate; 12. Anti-loosening baffle; 13. Extension plate; 14. First slider; 15. Second slider; 16. Through groove; 17. Fixing pin; 18. Third slider; 19. First throttle; 20. Second throttle. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Example:

[0032] like Figure 1-6 As shown, this embodiment proposes a tensile testing fixture for wire harness terminals, including a tensile testing instrument body 1. The testing instrument body 1 includes a main body 101, a display screen 102, a terminal fixing seat 103, and a base 104. A first threaded rod 5 is threadedly connected to the base 104. A moving block 6 is rotatably engaged at the other end of the first threaded rod 5. When the first threaded rod 5 rotates, it pushes the moving block 6 to move. A clamp 7 is fixedly installed on the top of the moving block 6. The moving block 6 drives the clamp 7 to move synchronously, ultimately causing the clamp 7 to clamp the wire harness. A mounting base 8 is fixedly installed on the left side wall of the main body 101. A U-shaped frame 9 is slidably connected to the mounting base 8. A second threaded rod 10 is rotatably connected to the U-shaped frame 9. A connecting plate 11 is threadedly connected to the second threaded rod 10. The rotation of the second threaded rod 10 drives the connecting plate 11 to move through the threaded pair transmission. An anti-loosening baffle 12 is fixedly installed on the top of the connecting plate 11. When the connecting plate 11 moves, it drives the anti-loosening baffle 12 to move. The anti-loosening baffle 12 is slidably connected to the U-shaped frame 9. A fixing mechanism is provided on the mounting base 8.

[0033] An extension plate 13 is fixedly installed at the bottom of the clamp 7, and a first slider 14 is fixedly installed on the extension plate 13. The first slider 14 is slidably connected in the groove of the side wall of the base 104. When the clamp 7 moves, it drives the extension plate 13 and the first slider 14 to slide in the groove of the side wall of the base 104, ensuring that the movement trajectory of the clamp 7 is stable and without deviation.

[0034] A second slider 15 is fixedly installed on the U-shaped frame 9. The second slider 15 is slidably connected in the groove on the mounting base 8. The U-shaped frame 9 drives the second slider 15 to slide in the groove on the mounting base 8.

[0035] A third slider 18 is fixedly installed at the bottom of the anti-loosening baffle 12. The third slider 18 is slidably connected in the groove on the U-shaped frame 9. The anti-loosening baffle 12 simultaneously drives the third slider 18 to slide in the groove on the U-shaped frame 9.

[0036] The fixing mechanism includes a fixing pin 17 set on the mounting base 8 and a through groove 16 opened on the second slider 15. When the U-shaped frame 9 slides to the top, the fixing pin 17 is inserted into the through groove 16 of the second slider 15 to mechanically lock the position of the U-shaped frame 9.

[0037] A first throttle 19 is fixedly installed at one end of the first threaded rod 5, and the first throttle 19 drives the first threaded rod 5 to rotate.

[0038] A second handle 20 is fixedly installed at the end of the second threaded rod 10. The rotation of the second handle 20 drives the second threaded rod 10 to rotate.

[0039] Specifically, when using this wire harness terminal tensioning fixture: the wire harness terminals are clamped in the terminal fixing seat 103, and then the wire harness is placed between the clamps 7. Next, the operator rotates the first throttle 19 to drive the first threaded rod 5 to rotate. While the first threaded rod 5 rotates, it pushes the moving block 6 to move linearly along the base 104. At the same time, the moving block 6 drives the clamps 7 to move synchronously. When the clamps 7 move, it drives the extension plate 13 and the first slider 14 to slide in the groove on the side wall of the base 104 to ensure that the movement trajectory of the clamps 7 is stable and without deviation, and finally the clamps 7 clamp the wire harness. During this process, it is important to straighten the wire harness.

[0040] Then, push the U-shaped frame 9 upwards. The U-shaped frame 9 drives the second slider 15 to slide in the groove on the mounting base 8. When it slides to the top, insert the fixing pin 17 into the through slot 16 of the second slider 15 to mechanically lock the position of the U-shaped frame 9. Then, rotate the second handle 20. The rotation of the second handle 20 drives the second threaded rod 10 to rotate. Through the threaded pair transmission, the connecting plate 11 moves towards the first handle 19. When the connecting plate 11 moves, it drives the anti-loosening baffle 12 to move. The anti-loosening baffle 12 simultaneously drives the third slider 18 to slide in the groove on the U-shaped frame 9, so that the anti-loosening baffle 12 abuts against the first handle 19, forming a physical block. During the test, the vibration energy is absorbed by the baffle, preventing the first threaded rod 5 from accidentally rotating and causing the clamping force to decrease. This design effectively limits the possibility of the handle and threaded rod rotating due to vibration, ensuring that the clamping plate maintains a stable clamping force during the test. It avoids the phenomenon of wire harness slippage caused by the clamping plate loosening.

[0041] In this embodiment, the tester body 1 is manufactured by Shanghai Gaozhi Precision Instruments Co., Ltd., and its model is GNDZ. Its structure, principle and usage are existing technologies and will not be described in detail here.

[0042] The threaded rod in this device requires regular maintenance and lubrication.

[0043] All technical features in this embodiment can be freely combined according to actual needs.

[0044] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A wire harness terminal pull force tool comprising a pull force tester body (1), characterized by, The tester body (1) includes a main body (101), a display screen (102), a terminal fixing seat (103), and a base (104). A first threaded rod (5) is threadedly connected to the base (104). A moving block (6) is rotatably engaged at the other end of the first threaded rod (5). A clamp (7) is fixedly installed on the top of the moving block (6). An mounting seat (8) is fixedly installed on the left side wall of the main body (101). A U-shaped frame (9) is slidably connected to the mounting seat (8). A second threaded rod (10) is rotatably connected to the U-shaped frame (9). A connecting plate (11) is threadedly connected to the second threaded rod (10). An anti-loosening baffle (12) is fixedly installed on the top of the connecting plate (11). The anti-loosening baffle (12) is slidably connected to the U-shaped frame (9). A fixing mechanism is provided on the mounting seat (8).

2. A wire harness terminal pull force tool as set forth in claim 1, wherein, An extension plate (13) is fixedly installed at the bottom of the clamp (7), and a first slider (14) is fixedly installed on the extension plate (13). The first slider (14) is slidably connected in the groove of the side wall of the base (104).

3. A wire harness terminal pull force tool as set forth in claim 1, wherein, A second slider (15) is fixedly installed on the U-shaped frame (9), and the second slider (15) is slidably connected in the groove on the mounting base (8).

4. A wire harness terminal puller as set forth in claim 1, characterized by The bottom of the anti-loosening baffle (12) is fixedly installed with a third slider (18), which is slidably connected in the groove on the U-shaped frame (9).

5. A wire harness terminal puller as set forth in claim 3, characterized by The fixing mechanism includes a fixing pin (17) disposed on the mounting base (8).

6. A wire harness terminal pull force tool as set forth in claim 5, wherein, The second slider (15) has a through groove (16) that matches the fixing pin (17).

7. A wire harness terminal puller as set forth in claim 1, characterized by The first threaded rod (5) has a first throttle (19) fixedly installed at one end.

8. A wire harness terminal puller as set forth in claim 1, characterized by A second throttle (20) is fixedly installed at the end of the second threaded rod (10).

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