A kind of terminal anti-tension detection device

Abstract

The utility model provides a kind of wiring terminal tensile resistance detection device, it is related to wiring harness tensile resistance detection equipment field, including operation platform and tensile resistance detector. Terminal fixed mechanism, wiring harness fixed mechanism and auxiliary limit stop are sequentially equipped on operation platform, terminal fixed mechanism is connected with tensile resistance detector, and tensile resistance detector and auxiliary limit stop are respectively arranged in the length direction of operation platform two ends;Wiring harness fixed mechanism includes upper pressing plate and lower pressing plate, and wiring harness groove is equipped between upper pressing plate and lower pressing plate, the inner wall of wiring harness groove is attached to flexible contact pad, and upper pressing plate is moved along vertical direction to realize cooperation with lower pressing plate and clamps wiring harness, effectively avoid any mechanical damage to wiring harness surface;Auxiliary limit stop is arranged on the moving path of wiring harness fixed mechanism, for limiting the movement limit position of wiring harness fixed mechanism, ensure that wiring harness fixed mechanism moves within the safe stroke range, prevent equipment structure damage or test data distortion due to excessive displacement.

Description

Technical Field

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

[0002] As a key component in electrical connections, the tensile strength of terminal blocks directly affects the safety and reliability of electrical systems. In industrial production, automobile manufacturing, and home appliance assembly, the connection strength between terminal blocks and wire harnesses is an important indicator of product quality control, thus requiring tensile strength testing using specialized equipment.

[0003] Existing technologies for terminal tensile strength testing devices have several shortcomings. Traditional testing equipment often uses rigid clamping structures to fix wire harnesses, which can easily damage the insulation layer during testing. This is especially true for delicate electronic wire harnesses, where excessive clamping can lead to insulation breakage and affect the accuracy of the test results. Furthermore, the fixing mechanisms of most devices have poor adaptability, failing to meet the testing requirements of different specifications of wire harnesses and terminals, necessitating frequent changes of tooling fixtures and reducing testing efficiency. In addition, existing devices generally lack effective limiting and protective structures. When a wire harness or terminal breaks during testing, the moving parts are prone to colliding with other parts of the equipment due to inertia, not only damaging the equipment but also posing safety hazards. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of the present invention is to provide a terminal tensile strength testing device to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model is as follows: a terminal tensile strength testing device, including an operating table and a tensile strength detector, wherein a terminal fixing mechanism, a wire harness fixing mechanism and an auxiliary limiting block are sequentially provided on the operating table, the terminal fixing mechanism is connected to the tensile strength detector, and the tensile strength detector and the auxiliary limiting block are respectively set at both ends of the length direction of the operating table; The wire harness fixing mechanism includes an upper pressure plate and a lower pressure plate. A wire harness groove is provided between the upper pressure plate and the lower pressure plate. A flexible contact pad is attached to the inner wall of the wire harness groove. The upper pressure plate moves vertically to cooperate with the lower pressure plate to clamp the wire harness. The auxiliary limiting block is disposed on the moving path of the wire harness fixing mechanism to limit the moving limit position of the wire harness fixing mechanism.

[0006] Furthermore, it also includes a drive mechanism, which is connected to the operating table; The driving mechanism includes a drive motor and a transmission screw. The transmission screw is horizontally arranged at the lower part of the operating table, and its two ends are rotatably connected to the operating table through bearing seats. The drive motor is fixed to the outer side of the end of the operating table, and its output shaft is connected to one end of the transmission screw through a coupling, which is used to drive the wire harness fixing mechanism to move along the length direction of the operating table.

[0007] Furthermore, the terminal fixing mechanism includes a support frame, a clamping plate, an adjusting bolt, and a support rod. The support frame is connected to the tensile detector via a connecting rod, and the support frame is mounted on the operating table via the support rod. The opposite sidewalls of the support frame are provided with threaded holes. The adjusting bolts pass through the threaded holes, and one end of the bolts extending into the support frame abuts against the outer sidewall of the clamping plate. The two adjusting bolts cooperate with the two sides of the clamping plate to form a space for clamping the wire harness terminal.

[0008] Furthermore, the wire harness fixing mechanism also includes a fixing frame, a screw, and a slider. The lower part of the slider is threadedly connected to the transmission screw, and the upper part passes through the slide rail on the upper surface of the operating table and is connected to the fixing frame. The lower pressure plate is fixed to the bottom inside the fixing frame. The top of the fixed frame is provided with a threaded hole, the screw passes through the threaded hole, an adjusting wheel is fixed at its top end, and the bottom end is connected to the upper pressure plate. The screw drives the upper pressure plate to move vertically.

[0009] Furthermore, the upper part of the wire harness groove is located on the lower surface of the upper pressure plate, and the lower part of the wire harness groove is located on the upper surface of the lower pressure plate, the two together forming the wire harness groove.

[0010] Furthermore, the upper pressure plate is L-shaped, with its horizontal surface connected to the upper surface of the lower pressure plate and its vertical surface connected to the side surface of the lower pressure plate. The upper pressure plate and the lower pressure plate fit together to clamp the wire harness.

[0011] Furthermore, the auxiliary limiting block is detachably connected to one end of the slide rail on the upper surface of the operating table, and a buffer rubber layer is attached to the side facing the wire harness fixing mechanism, the thickness of the buffer rubber layer being 3-5mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The inner wall of the wire harness groove is equipped with a flexible contact pad made of silicone, which has excellent resistance to compression deformation and provides a sufficient coefficient of friction, thus ensuring a stable and reliable clamping while effectively avoiding any mechanical damage to the surface of the wire harness.

[0013] The auxiliary positioning block is used to mechanically limit the movement range of the wire harness fixing mechanism, ensuring that the wire harness fixing mechanism moves within a safe stroke range and preventing damage to the equipment structure or distortion of test data due to excessive displacement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the terminal tensile strength testing device according to an embodiment of the present invention; Figure 2 This is a front view schematic diagram of the terminal tensile strength testing device according to an embodiment of the present utility model; Figure 3 This is a top view schematic diagram of the terminal tensile strength testing device according to an embodiment of the present utility model; Figure 4 for Figure 1 Schematic diagram of the center harness fixing mechanism; Figure 5 for Figure 4 Schematic diagram of the AA section; Figure 6 for Figure 1 Schematic diagram of the middle terminal fixing mechanism.

[0015] In the picture: 1. Tensile tester; 11. Connecting rod; 2. Terminal fixing mechanism; 21. Bearing frame; 22. Clamping plate; 23. Adjusting bolt; 24. Support rod; 3. Wire harness fixing mechanism; 31. Adjusting wheel; 32. Screw; 33. Fixing frame; 34. Upper pressure plate; 35. Wire harness groove; 36. Lower pressure plate; 37. Sliding block; 4. Auxiliary limit stop; 5. Drive mechanism; 51. Drive motor; 52. Transmission screw; 6. Operating table.

[0016] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0019] like Figures 1-6 As shown, in some embodiments, a terminal tensile strength testing device includes an operating platform 6 and a tensile strength detector 1. The operating platform 6 is sequentially provided with a terminal fixing mechanism 2, a wire harness fixing mechanism 3, and an auxiliary limiting block 4. Specifically, the terminal fixing mechanism 2 is connected to the tensile strength detector 1 to form a force transmission channel; the tensile strength detector 1 and the auxiliary limiting block 4 are respectively arranged at both ends of the operating platform 6 along its length to form a symmetrical and balanced layout.

[0020] The wire harness fixing mechanism 3 adopts an upper and lower pressure clamping design, including an upper pressure plate 34 and a lower pressure plate 36. A wire harness groove 35 is provided between the upper pressure plate 34 and the lower pressure plate 36. The inner surface of the wire harness groove 35 is fitted with a flexible contact pad. This buffer pad is made of silicone material, which has excellent resistance to compression deformation and provides a sufficient coefficient of friction, thereby ensuring a stable and reliable clamping while effectively avoiding any mechanical damage to the wire harness surface. The upper pressure plate 34 moves vertically to achieve smooth vertical lifting and lowering movement. Together with the surface-finished lower pressure plate 36, it can achieve precise clamping and fixing of wire harnesses of different diameters. The clamping force can be steplessly adjusted according to testing requirements.

[0021] The auxiliary limit block 4 is fixedly installed on the moving trajectory of the wire harness fixing mechanism 3. Its main function is to mechanically limit the moving range of the wire harness fixing mechanism 3, ensure that the wire harness fixing mechanism 3 moves within the safe travel range, and prevent damage to the equipment structure or distortion of test data due to excessive displacement.

[0022] Furthermore, in some embodiments, the detection device also includes a drive mechanism 5, which is mechanically connected to the main frame of the operating platform 6 in a stable and reliable manner. Specifically, the drive mechanism 5 consists of a drive motor 51 and a transmission screw 52. The transmission screw 52 is arranged horizontally and parallel to each other, and is installed on the lower part of the operating platform 6. Its two ends are connected to the support side plates of the operating platform 6 through bearing seats to form a low-friction connection that allows free rotation. This design not only ensures the smoothness of the transmission process, but also effectively suppresses vibration and noise. The drive motor 51 is fixedly installed with a flange and is mounted on the outer end of the operating platform 6. Its power output shaft is connected to the input end of the transmission screw 52 through a coupling.

[0023] This design enables the drive motor 51 to precisely control the movement trajectory of the wire harness fixing mechanism 3 through a closed-loop control system, allowing it to move smoothly and linearly along the guide rail of the operating table 6 without gaps. This meets the tensile strength testing requirements of the wiring terminals, greatly improving the applicability and testing reliability of the testing device.

[0024] Furthermore, in some embodiments, the terminal fixing mechanism 2 includes a support frame 21, a clamping plate 22, an adjusting bolt 23, and a support rod 24. The support frame 21 is rigidly connected to the tension detector 1 via a connecting rod 11 to ensure the accuracy of force transmission; at the same time, the bottom of the support frame 21 is provided with support rods 24, which slide against the upper surface of the operating table 6.

[0025] Specifically, the support frame 21 serves as the main support structure of the terminal fixing mechanism 2, and its upper surface is provided with a mounting groove, in which the clamping plate 22 is installed. Threaded holes are provided on the opposite sidewalls of the support frame 21, and these threaded holes form a precise threaded engagement with the adjusting bolts 23.

[0026] Specifically, the adjusting bolt 23 passes through the threaded hole, and one end of its front end extends into the bearing frame 21 and abuts against the outer wall of the clamping plate 22. By synchronously adjusting the adjusting bolts 23 arranged symmetrically on both sides, the clamping end of the clamping plate 22 can be moved. The terminals of the wire harness are fixed by the clamping end. By finely adjusting the screw depth of the adjusting bolts 23 on both sides, the terminal part can be stably clamped, ensuring that the terminal will not slip or shift at any angle when axial tension is applied, thereby ensuring the accuracy and reliability of the test data.

[0027] Furthermore, in some embodiments, the wire harness fixing mechanism 3 also includes a fixing frame 33, a screw 32, and a slider 37. The lower part of the slider 37 forms a high-precision threaded connection with the transmission lead screw 52. This design effectively avoids backlash errors during transmission, ensuring transmission accuracy during testing. The upper part passes through a slide rail on the upper surface of the operating table 6 and is fixedly connected to the fixing frame 33, ensuring the stability of the overall structure. The lower pressure plate 36 is fixed inside the bottom of the fixing frame 33, forming a stable support platform.

[0028] Specifically, the top center of the fixing frame 33 has a threaded hole, forming a threaded transmission structure with the screw 32. The top of the screw 32 is equipped with an adjusting wheel 31, facilitating torque application by the operator; the bottom end is connected to the upper surface of the upper pressure plate 34 via a bearing. When the adjusting wheel 31 is rotated clockwise or counterclockwise, the screw 32 drives the upper pressure plate 34 to make precise linear movements in the vertical direction through the precision threaded transmission, thereby achieving precise adjustment of the distance between the upper pressure plate 34 and the lower pressure plate 36, ensuring stable clamping of wire harnesses of different diameters.

[0029] Furthermore, in some embodiments, the wire harness groove 35 adopts a split design, consisting of upper and lower parts. Specifically, the upper part of the wire harness groove 35 is located on the lower surface of the upper pressure plate 34, and is machined to form a groove structure that matches the wire harness; the lower part of the wire harness groove 35 is located on the upper surface of the lower pressure plate 36, and is also machined to form a corresponding groove structure. When the upper pressure plate 34 and the lower pressure plate 36 are pressed together during the testing process, these two precisely matched groove parts can be perfectly aligned, thus forming a complete wire harness groove 35. This split design not only ensures the accurate positioning of the wire harness during the testing process, but also effectively prevents the wire harness from shifting or sliding under force, ensuring the accuracy and reliability of the tensile strength test.

[0030] Furthermore, in some embodiments, the upper pressure plate 34 adopts an L-shaped structure design. Specifically, the upper pressure plate 34 is composed of mutually perpendicular horizontal and vertical surfaces forming an integral structure. During actual assembly, the horizontal surface of the upper pressure plate 34 is tightly connected to the upper surface of the lower pressure plate 36, while the vertical surface of the upper pressure plate 34 forms a stable connection with the side surface of the lower pressure plate 36. This unique L-shaped structure design allows the upper pressure plate 34 to achieve all-around contact with the lower pressure plate 36, thereby forming a reliable clamping force during wire harness testing. This ensures that the wire harness remains stable and fixed during tensile testing, effectively improving the accuracy and reliability of the test results.

[0031] Furthermore, in some embodiments, the auxiliary limiting block 4 is detachably connected to one end of the slide rail on the upper surface of the operating table 6 via bolts. A buffer rubber layer is tightly adhered to the working surface of the auxiliary limiting block 4 facing the wire harness fixing mechanism 3. This buffer rubber layer is made of wear-resistant and anti-aging material, and its thickness is precisely designed and controlled within the range of 3-5mm. This effectively absorbs the impact force during the testing process while ensuring the reliability of the limiting function. The buffer rubber layer significantly improves the protection of the wire harness during testing and avoids potential damage from direct contact with metal parts.

[0032] The usage process of this utility model is as follows: 1. Wire harness fixing Select the appropriate wire harness slot 35 according to the diameter of the wire harness to be tested. Place the terminal at one end of the wire harness between the two clamping plates 22 of the terminal fixing mechanism 2, and tighten the adjusting bolts 23 on both sides to slowly bring the clamping plates 22 closer to the terminal until the flexible rubber pad is tightly attached to the terminal surface. Be careful to control the clamping force to ensure that the terminal is firmly fixed, but avoid over-clamping and damaging the terminal.

[0033] Place the other end of the wire harness into the corresponding wire harness slot 35 on the lower pressure plate 36, and rotate the adjusting wheel 31 to move the screw 32 downward, so that the upper pressure plate 34 slowly presses onto the wire harness. When a certain resistance is felt, stop rotating the adjusting wheel 31. At this time, the wire harness is firmly clamped, and the flexible contact pad is completely in contact with the surface of the wire harness, which plays a protective role.

[0034] Check the wiring harness for secure fastening: Ensure the wiring harness axis is aligned with the length of the worktable 6, and that there is no twisting or offset; gently pull both ends of the wiring harness to confirm that it is securely fastened and not loose.

[0035] II. Tensile Test Turn on the control switches of the tensile detector 1 and the drive motor 51, and set the detection parameters, such as a tensile speed of 50 mm / min and a maximum tensile force limit of 2000 N.

[0036] Start the drive motor 51, which drives the transmission screw 52 to rotate clockwise. Under the action of the thread, the slider 37 moves along the operating table 6 away from the terminal fixing mechanism 2, and the wire harness is gradually stretched. The tension detector 1 collects tension data in real time and displays it on the display screen.

[0037] During the testing process, closely observe the condition of the wiring harness and the operation of the equipment. If any abnormal deformation of the wiring harness or abnormal noises are found in the equipment, the testing should be stopped immediately, the cause investigated, and the fault rectified.

[0038] When the tension reaches the preset limit or the wiring harness breaks, the drive motor 51 automatically stops running. If the wiring harness breaks, the slider 37 will continue to move a certain distance due to inertia. At this time, the auxiliary positioning block 4 will block the slider 37, and the buffer rubber layer will absorb the impact energy to avoid damage to the equipment.

[0039] III. Post-Detection Processing Record tensile test data, including maximum tensile force value, fracture location, and other information.

[0040] The reverse start drive motor 51 is activated to return the slider 37 to its initial position.

[0041] Loosen the adjusting bolt 23 and adjusting wheel 31, remove the tested wire harness, and clean the debris from the surface of the equipment.

[0042] Turn off the power to the equipment and perform routine maintenance, such as cleaning the slide rails and checking the tightness of the bolts, to ensure that the equipment is in good condition.

[0043] 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.

[0044] Although embodiments of the present 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 present invention.

Claims

1. A terminal tensile strength testing device, comprising an operating table (6) and a tensile strength detector (1), characterized in that, The operating table (6) is provided with a terminal fixing mechanism (2), a wire harness fixing mechanism (3) and an auxiliary limiting block (4) in sequence. The terminal fixing mechanism (2) is connected to the tension detector (1). The tension detector (1) and the auxiliary limiting block (4) are respectively set at both ends of the length direction of the operating table (6). The wire harness fixing mechanism (3) includes an upper pressure plate (34) and a lower pressure plate (36). A wire harness groove (35) is provided between the upper pressure plate (34) and the lower pressure plate (36). The inner wall of the wire harness groove (35) is fitted with a flexible contact pad. The upper pressure plate (34) moves vertically to cooperate with the lower pressure plate (36) to clamp the wire harness. The auxiliary limiting block (4) is set on the moving path of the wire harness fixing mechanism (3) to limit the moving limit position of the wire harness fixing mechanism (3).

2. The terminal tensile strength testing device according to claim 1, characterized in that, It also includes a drive mechanism (5), which is connected to the operating table (6); The drive mechanism (5) includes a drive motor (51) and a transmission screw (52). The transmission screw (52) is horizontally arranged at the lower part of the operating table (6), and its two ends are rotatably connected to the operating table (6) through bearing seats. The drive motor (51) is fixed to the outer side of the end of the operating table (6), and its output shaft is connected to one end of the transmission screw (52) through a coupling, for driving the wire harness fixing mechanism (3) to move along the length direction of the operating table (6).

3. The terminal tensile strength testing device according to claim 1, characterized in that, The terminal fixing mechanism (2) includes a bearing frame (21), a clamping plate (22), an adjusting bolt (23) and a support rod (24). The bearing frame (21) is connected to the tension detector (1) through a connecting rod (11). The bearing frame (21) is mounted on the operating table (6) through the support rod (24). The opposite sidewalls of the support frame (21) are provided with threaded holes. The adjusting bolt (23) passes through the threaded holes, and one end of it extends into the support frame (21) and abuts against the outer sidewall of the clamping plate (22). The two adjusting bolts (23) cooperate with the two sides of the clamping plate (22) to form a space for clamping the wire harness terminal.

4. The terminal tensile strength testing device according to claim 2, characterized in that, The wire harness fixing mechanism (3) also includes a fixing frame (33), a screw (32) and a slider (37). The lower part of the slider (37) is threadedly connected to the transmission screw (52), and the upper part passes through the slide rail on the upper surface of the operating table (6) and is connected to the fixing frame (33). The lower pressure plate (36) is fixed to the bottom inside the fixing frame (33). The fixed frame (33) has a threaded hole at the top, the screw (32) passes through the threaded hole, the top end of which is fixed with an adjusting wheel (31), and the bottom end is connected to the upper pressure plate (34). The screw (32) drives the upper pressure plate (34) to move vertically.

5. The terminal tensile strength testing device according to claim 4, characterized in that, The upper part of the wire harness groove (35) is located on the lower surface of the upper pressure plate (34), and the lower part of the wire harness groove (35) is located on the upper surface of the lower pressure plate (36). The two parts cooperate to form the wire harness groove (35).

6. The terminal tensile strength testing device according to claim 4, characterized in that, The upper pressure plate (34) is L-shaped. The horizontal surface of the upper pressure plate (34) is connected to the upper surface of the lower pressure plate (36), and the vertical surface of the upper pressure plate (34) is connected to the side surface of the lower pressure plate (36). The upper pressure plate (34) and the lower pressure plate (36) fit together to clamp the wire harness.

7. The terminal tensile strength testing device according to claim 1, characterized in that, The auxiliary limiting block (4) is detachably connected to one end of the slide rail on the upper surface of the operating table (6), and a buffer rubber layer is attached to the side facing the wire harness fixing mechanism (3), the thickness of the buffer rubber layer being 3-5mm.

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