A harness pull test device

Abstract

The application discloses a kind of wire harness tension test devices, it is related to test equipment technical field, including device shell, the top of device shell is equipped with support frame, and the one end of support frame is provided with screw rod, the outer wall of screw rod is equipped with sleeve, and the outer wall of sleeve is provided with first limit frame, the inner wall of first limit frame is provided with first contact block, and the one end of first contact block is provided with first recess, the one end of support frame is also provided with second limit frame, and the inner wall of second limit frame is provided with second recess.The application is provided by first contact block, second limit frame, effectively improves the stability of terminal in clamping device, significantly improves the work efficiency of detecting wire harness clamping, by the setting of protective cover, when equipment detects wire harness, by driving motor, make protective cover go up and protect around detection, effectively improve the safety of equipment in detection process.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically to a wire harness tensile testing device. Background Technology

[0002] Tensile testing equipment is a precision instrument used to measure the mechanical properties of materials or products under tensile force. By simulating actual stress scenarios, it quantifies key indicators such as the strength, elasticity, and ductility of materials. Tensile testing equipment applies dynamic or static tensile force to the sample through a servo motor or hydraulic system, and simultaneously collects data such as force, displacement, and strain, ultimately generating a stress-to-strain curve.

[0003] The wire harness tensile testing equipment is a mechanical performance testing instrument specifically designed for integrated wire harness assemblies composed of wires, terminals, connectors, and insulation layers. Its core function is to simulate the stress state of the wire harness under installation, use, vibration, or accidental pulling scenarios, and accurately measure key indicators such as the crimping strength of its terminals and wires, connector insertion and extraction force, and tensile strength of the wire harness assembly. This allows for the assessment of the reliability and durability of the wire harness connection, preventing equipment failures caused by wire harness detachment, poor contact, or breakage.

[0004] Existing equipment for wire harness tensile testing often struggles with flat, elongated terminals, such as automotive PCB insert terminals and consumer electronics FPC connector flat terminals. These terminals are typically designed with a thickness of only 0.3-1.2mm and a length much greater than their width. The built-in clamping devices are often generic designs, insufficiently adapted to the specific shape of these terminals. After clamping, slight wobbling occurs due to the small contact area and lack of dedicated positioning and limiting structures. Furthermore, the narrow thickness of these terminals necessitates careful control of clamping force to avoid damaging the tin or gold plating, leading to insufficient clamping stability. Axial slippage or radial displacement can easily occur during fixation. These issues force operators to repeatedly adjust the clamp position, recalibrate the terminal posture, and even attempt multiple times to achieve effective clamping, significantly reducing the efficiency of wire harness clamping for testing. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a wire harness tensile testing device to solve the technical problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wire harness tensile testing device, comprising a device housing, a support frame mounted on the top of the device housing, a screw rod provided at one end of the support frame, a sleeve fitted on the outer wall of the screw rod, a first limiting frame provided on the outer wall of the sleeve, a first contact block provided on the inner wall of the first limiting frame, a first groove provided at one end of the first contact block, a second limiting frame provided at one end of the support frame, a second groove provided on the inner wall of the second limiting frame, a second contact block provided at the bottom of the second groove, and a protective cover provided on the outer wall of the second limiting frame.

[0007] By adopting the above technical solution, the first contact block and the second limiting frame limit the outer wall of the terminal, and multiple sets of positioning rods clamp the outer wall of the terminal, effectively improving the stability of the terminal in the clamping device. This greatly reduces the need for operators to repeatedly adjust the position of the clamp and recalibrate the terminal posture, significantly improving the efficiency of wire harness clamping. Furthermore, the protective cover, driven by a motor, moves upwards to protect the surrounding area when the equipment is testing the wire harness, effectively improving the safety of the equipment during the testing process. Additionally, the transparent acrylic material of the drive motor facilitates close observation of the wire harness by operators, enhancing the practicality of the equipment.

[0008] The invention is further configured such that a slider is movably mounted on the outer wall of the support frame, and the slider is bolted to the first limiting frame.

[0009] Preferably, the slider configuration improves the stability of the first limiting frame during the movement of the screw outer wall and reduces the phenomenon of the first limiting frame shifting.

[0010] The present invention is further configured such that the first contact block is movably mounted on one end of the first limiting frame, and the number of the first contact blocks is two sets, and a positioning rod is provided at one end of the first limiting frame and the first contact block.

[0011] Preferably, the first limiting frame and the positioning rod are threaded together. Rotating the positioning rod causes the first contact block to clamp the terminal, thereby limiting the terminal and improving the stability during the detection process.

[0012] The present invention is further configured such that the first contact blocks are disposed opposite to each other, and the inner wall of the first contact block is provided with a first groove, and the first groove is not connected to the bottom of the first contact block.

[0013] Preferably, the first groove limits the position of the terminal, limiting terminals of different lengths within a certain range, thereby improving the detection efficiency of the equipment.

[0014] The present invention is further configured such that the second contact block is movably sleeved within the second limiting frame, and a positioning rod is provided at the end of the second contact block away from the second groove.

[0015] Preferably, the second limiting frame and the positioning rod are threaded together, and rotating the positioning rod limits the position of the second contact block, and the first limiting frame and the second limiting frame are arranged opposite to each other.

[0016] The present invention is further configured such that a drive motor is provided at the bottom of the screw, and the drive motor is located on the inner wall of the device housing.

[0017] Preferably, the drive motor drives the screw to rotate, thereby moving the first limiting frame to facilitate tension detection of the wire harness.

[0018] The present invention is further configured such that a cavity is provided at the top of the device housing, and a protective cover is installed inside the cavity.

[0019] Preferably, the cavity design facilitates the positioning of the protective cover.

[0020] The present invention is further configured such that the drive motor can also be a dual-head motor, and a drive wheel is provided at the end of the drive motor away from the screw.

[0021] Preferably, the output end of the drive motor is equipped with a drive wheel, and the outer wall of the drive wheel is fitted with a toothed rack, and the other end of the toothed rack is fitted with a driven wheel, thereby improving the utilization rate of the drive motor and saving energy consumption.

[0022] The present invention is further configured such that a toothed rack is fitted on the outer wall of the driving wheel, and a driven wheel is fitted on the other end of the toothed rack, and a lead screw is provided on the top of the driven wheel, and a nut is provided on the outer wall of the lead screw.

[0023] Preferably, a nut is fitted on the outer wall of the lead screw, which causes the connecting rod to move upward, converting kinetic energy and facilitating the retraction of the protective cover. Alternatively, the lead screw is a reciprocating lead screw.

[0024] The invention is further configured such that the nut is threadedly connected to the lead screw, and connecting rods are installed at both ends of the outer wall of the nut, and the other end of the connecting rods is connected to the protective cover. A through hole is provided at the top of the device housing, and a cover plate is installed on the outer wall of the through hole.

[0025] Preferably, the surrounding area is protected during the equipment testing process to reduce the risk of accidental injury to workers caused by flying parts during the tensile process, thereby improving the safety of the equipment. The cover plate is connected to the device housing by a torsion spring, which limits the through hole and also facilitates the retraction of the nut.

[0026] In summary, the present invention has the following main beneficial effects: The present invention, through the setting of a first contact block and a second limiting frame, limits the outer wall of the terminal, and clamps the outer wall of the terminal with multiple sets of positioning rods, which effectively improves the stability of the terminal in the clamping device, greatly reduces the phenomenon of workers repeatedly adjusting the position of the clamp and recalibrating the terminal posture, and significantly improves the work efficiency of testing wire harness clamping.

[0027] This invention, through the setting of a protective cover, allows the protective cover to move upwards via a drive motor to protect the surrounding area when the equipment is inspecting the wire harness, effectively improving the safety of the equipment during the inspection process. Secondly, the drive motor is made of transparent acrylic, which also makes it easier for staff to observe the wire harness at close range, improving the practicality of the equipment. Attached Figure Description

[0028] Figure 1 This is a front perspective view of the present invention; Figure 2 This is a top perspective view of the present invention; Figure 3 This is a front view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 This is a schematic diagram showing the positions of the first limiting frame and the first contact block of the present invention; Figure 6 This is a schematic diagram showing the positions of the second limiting frame and the second contact block of the present invention; Figure 7 This is a schematic diagram showing the connection between the drive motor and the protective cover of the present invention; Figure 8 This is a schematic diagram of the connection between the nut and the connecting rod of the present invention.

[0029] Explanation of reference numerals in the attached figures: 1. Device housing; 2. Support frame; 3. Screw; 4. First limiting frame; 5. Positioning rod; 6. Slider; 7. Sleeve; 8. First contact block; 9. First groove; 10. Second limiting frame; 11. Second groove; 12. Second contact block; 13. Protective cover; 14. Nut; 15. Connecting rod; 16. Toothed rack; 17. Cavity; 18. Cover plate; 19. Drive motor. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The embodiments of the present invention will now be described.

[0032] First embodiment: A wire harness tensile testing device, please refer to Figures 1-8 The device includes a housing 1, a support frame 2 mounted on the top of the housing 1, a screw 3 at one end of the support frame 2, a sleeve 7 fitted on the outer wall of the screw 3, a first limiting frame 4 on the outer wall of the sleeve 7, a first contact block 8 on the inner wall of the first limiting frame 4, a first groove 9 at one end of the first contact block 8, a second limiting frame 10 at one end of the support frame 2, a second groove 11 on the inner wall of the second limiting frame 10, a second contact block 12 at the bottom of the second groove 11, and a protective cover 13 on the outer wall of the second limiting frame 10. Through the arrangement of the first contact block 8 and the second limiting frame 10, the first contact block 8 and the second... The limiting frame 10 limits the outer wall of the terminal, and the multiple sets of positioning rods 5 clamp the outer wall of the terminal, which effectively improves the stability of the terminal in the clamping device, greatly reduces the phenomenon of repeated adjustment of the clamp position and recalibration of the terminal posture by the staff, and significantly improves the working efficiency of the wire harness clamping. With the setting of the protective cover 13, when the equipment is testing the wire harness, the drive motor 19 moves the protective cover 13 upward to protect the surrounding area of ​​the test, which effectively improves the safety of the equipment during the test. Secondly, the drive motor 19 is made of transparent acrylic, which also makes it easy for the staff to observe the wire harness at close range, improving the practicality of the equipment.

[0033] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-4 A slider 6 is movably installed on the outer wall of the support frame 2, and the slider 6 is bolted to the first limiting frame 4. The slider 6 improves the stability of the first limiting frame 4 during the movement of the screw 3 outer wall and reduces the phenomenon of the first limiting frame 4 shifting.

[0034] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5 The first contact block 8 is movably installed at one end of the first limiting frame 4, and there are two sets of the first contact blocks 8. The first limiting frame 4 and the first contact block 8 are provided with a positioning rod 5. The first limiting frame 4 and the positioning rod 5 are threadedly connected. Rotating the positioning rod 5 causes the first contact block 8 to clamp the terminal, thereby limiting the terminal and improving the stability of the detection process.

[0035] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5 The first contact block 8 is arranged opposite to each other, and the inner wall of the first contact block 8 is provided with a first groove 9. The first groove 9 is not connected to the bottom of the first contact block 8. The first groove 9 limits the position of the terminal and limits the terminals of different lengths within a certain range, thereby improving the detection efficiency of the equipment.

[0036] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-6 The second contact block 12 is movably fitted inside the second limiting frame 10, and a positioning rod 5 is provided at the end of the second contact block 12 away from the second groove 11. The second limiting frame 10 and the positioning rod 5 are threadedly connected, and the positioning rod 5 is rotated to limit the position of the second contact block 12. The first limiting frame 4 and the second limiting frame 10 are arranged opposite to each other.

[0037] For details regarding the above embodiments, please refer to [link / reference]. Figure 7 , Figure 8 A drive motor 19 is provided at the bottom of the screw 3, and the drive motor 19 is located on the inner wall of the device housing 1. The drive motor 19 drives the screw 3 to rotate, thereby moving the first limit frame 4, which facilitates the tensile testing of the wire harness.

[0038] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 The top of the device housing 1 is provided with a cavity 17, and a protective cover 13 is installed in the cavity 17. The cavity 17 facilitates the positioning of the protective cover 13.

[0039] Second embodiment: Please refer to Figure 7 , Figure 8 The difference between Embodiment 2 and Embodiment 1 is that, while retaining the features of Embodiment 1, the drive motor 19 is configured as a dual-head motor, and an active wheel is installed at the output end of the drive motor 19. A toothed rack 16 is fitted on the outer wall of the active wheel, and a driven wheel is fitted on the other end of the toothed rack 16. A lead screw is installed on the top of the driven wheel, which causes the lead screw to rotate. A nut 14 is fitted on the outer wall of the lead screw, which in turn causes the nut 14 to drive the connecting rod 15 to move upward, and also causes the protective cover 13 to move upward, thus protecting the surrounding area during the equipment testing process and improving the safety of the equipment.

[0040] In practical operation, this invention: When it is necessary to test the tensile strength of the flat and long terminal wire harness, first place the wire harness on the equipment, and make one set of terminals sleeved in the second groove 11 inside the second limiting frame 10, and another set of terminals placed in the first groove 9 inside the first contact block 8. Then, rotate the positioning rod 5 to limit the position of the first contact block 8, thereby fixing the position of the terminals and effectively improving the stability of the flat and long terminal. Secondly, the connecting wire is located between the first contact block 8 and the second limiting frame 10. Finally, turn on the control button of the equipment to make the drive motor 19 drive the screw 3 to rotate, so that the sleeve 7 drives the first limiting frame 4 to move up the outer wall of the support frame 2, thereby testing the tensile strength of the wire harness. Furthermore, after the wire harness is clamped, the drive motor 19 is a dual-head motor. When the drive motor 19 drives the screw 3 to rotate, it also drives the toothed rack 16 to rotate, which in turn causes the nut 14 to move the connecting rod 15 upward, so that the protective cover 13 is located on the outer wall of the wire harness to protect the area around the wire harness detection, reducing the risk of accidental injury to workers caused by flying parts during the tensioning process. It also eliminates the need for workers to manually place the protective cover 13, thus improving the working efficiency of the testing equipment.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A wire harness tensile testing device, comprising a device housing (1), characterized in that: A support frame (2) is installed on the top of the device housing (1), and a screw (3) is provided at one end of the support frame (2). A sleeve (7) is fitted on the outer wall of the screw (3), and a first limiting frame (4) is provided on the outer wall of the sleeve (7). A first contact block (8) is provided on the inner wall of the first limiting frame (4), and a first groove (9) is provided at one end of the first contact block (8). A second limiting frame (10) is also provided at one end of the support frame (2), and a second groove (11) is opened on the inner wall of the second limiting frame (10). A second contact block (12) is provided at the bottom of the second groove (11), and a protective cover (13) is also provided on the outer wall of the second limiting frame (10).

2. The wire harness tensile testing device according to claim 1, characterized in that: The outer wall of the support frame (2) is movably mounted with a slider (6), and the slider (6) is bolted to the first limiting frame (4).

3. The wire harness tensile testing device according to claim 1, characterized in that: The first contact block (8) is movably installed at one end of the first limiting frame (4), and there are two sets of the first contact blocks (8). A positioning rod (5) is provided at one end of the first limiting frame (4) and the first contact block (8).

4. The wire harness tensile testing device according to claim 1, characterized in that: The first contact blocks (8) are arranged opposite each other, and the inner wall of the first contact block (8) is provided with a first groove (9), and the first groove (9) is not connected to the bottom of the first contact block (8).

5. The wire harness tensile testing device according to claim 1, characterized in that: The second contact block (12) is movably fitted inside the second limiting frame (10), and a positioning rod (5) is provided at the end of the second contact block (12) away from the second groove (11).

6. The wire harness tensile testing device according to claim 1, characterized in that: The bottom of the screw (3) is provided with a drive motor (19), and the drive motor (19) is located on the inner wall of the device housing (1).

7. The wire harness tensile testing device according to claim 1, characterized in that: The top of the device housing (1) is provided with a cavity (17), and a protective cover (13) is installed inside the cavity (17).

8. A wire harness tensile testing device according to claim 6, characterized in that: The drive motor (19) can also be a dual-head motor, and the end of the drive motor (19) away from the screw (3) is provided with a drive wheel.

9. A wire harness tensile testing device according to claim 8, characterized in that: The outer wall of the driving wheel is fitted with a toothed strip (16), and the other end of the toothed strip (16) is fitted with a driven wheel. A lead screw is provided on the top of the driven wheel, and a nut (14) is provided on the outer wall of the lead screw.

10. A wire harness tensile testing device according to claim 9, characterized in that: The nut (14) is threadedly connected to the lead screw, and connecting rods (15) are installed at both ends of the outer wall of the nut (14), and the other end of the connecting rods (15) is connected to the protective cover (13). The top of the device housing (1) is provided with a through hole, and a cover plate (18) is installed on the outer wall of the through hole.

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