A bending resilience testing device for an electrical connection plug

Abstract

The present application relates to the technical fields of electrical element performance test, in particular to a kind of bending resilience performance testing device of electrical connection plug connector, including detection table, the middle part of detection table is provided with conveying assembly, conveying assembly upper end is fixedly connected with carrier plate, and carrier plate is provided with adjusting assembly, adjusting assembly upper end is fixedly installed with three-jaw chuck, test assembly is installed in carrier plate side portion, and test assembly lower end is fixedly connected with detection table, the structure that the adjusting assembly and three-jaw chuck are cooperated with each other is designed in the present application, three-jaw chuck realizes the quick, accurate clamping of electrical connection plug connector, adjusting assembly is driven by the meshing of multiple sets of adjusting gear and rectangular rack, realizes multidirectional adjustment of clamping angle, adapts multi-attitude test of plane bending, lateral bending, torsion composite bending, accurately simulates the complex stress working condition in actual use, while additionally adding temperature-humidity coupling mechanism, further ensure the authenticity and accuracy of test result.

Description

Technical Field

[0001] This invention relates to the field of electrical component performance testing technology, specifically to a device for testing the bending resilience of electrical connection connectors. Background Technology

[0002] Electrical connectors are core components for connecting various electrical equipment and wiring harnesses. Their bending resilience directly determines the stability, contact reliability, and service life of the connection. Plate terminal blocks, as a type of electrical connector, include... Figure 10 As shown, it consists of two parts, an upper part composed of inserts X forming a plug end, and a lower part composed of a hollow cylindrical cable connection part Y. It is widely used in automotive wiring harness terminals, PCB board miniature plugs, and new energy charging piles. During assembly, use, and maintenance, it is often subjected to external forces such as planar bending, lateral bending, and eccentric bending. If the rebound performance is poor, it can easily cause problems such as poor contact, spring fatigue failure, and wire detachment, which can lead to equipment failure.

[0003] Currently, most existing testing devices adopt a fixed clamping structure, which can only perform planar unidirectional bending tests. After a single clamping, they cannot achieve synchronous adjustment or multi-position conversion functions. They cannot simulate the real working conditions of electrical connection plugs under lateral compression, torsion and other external forces encountered in actual use, resulting in a serious disconnect between the test results and actual use scenarios. They cannot comprehensively and accurately evaluate the bending rebound reliability of electrical connection plugs, which in turn causes some electrical connection plugs that pass the single-direction test to fail prematurely in actual use, thus affecting the overall reliability of electrical equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a bending resilience performance testing device for electrical connection connectors. It features a structure where an adjustment component and a three-jaw chuck work together. The three-jaw chuck enables rapid and precise clamping of the electrical connection connectors. The adjustment component, through the meshing transmission of multiple sets of adjusting gears and a rectangular rack, achieves multi-directional adjustment of the clamping angle, adapting to multi-posture testing of planar bending, lateral bending, and torsional composite bending. This accurately simulates complex stress conditions in actual use. Furthermore, a temperature-humidity coupling mechanism is added to further ensure the accuracy of the test results.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a bending resilience performance testing device for electrical connection plugs, including a testing table, a conveying component is provided in the middle of the testing table, a carrying plate is fixedly connected to the upper end of the conveying component, an adjusting component is provided on the carrying plate, a three-jaw chuck is fixedly installed on the upper end of the adjusting component, a testing component is installed on the side of the carrying plate, and the lower end of the testing component is fixedly connected to the testing table. The adjustment component includes a support frame. The support frame is fixedly connected to the upper part of the middle of the loading plate. The support frame is "U" shaped with its opening facing downwards. Vertical shafts are arranged linearly and rotate evenly on the support frame. Each vertical shaft is fixedly connected to an adjustment gear at its lower end. An adjustment unit is provided on the side of the adjustment gear to drive multiple adjustment gears to rotate synchronously, so as to realize the multi-directional bending test function of the electrical connection connector.

[0006] Preferably, the testing platform is provided with a protective cover, which is made of transparent material and is hinged to the testing platform on one side. A handle is installed on the outer wall of the protective cover away from the hinge side.

[0007] Preferably, the conveying assembly includes a positioning box fixedly installed at the upper middle part of the detection table. A servo motor is fixedly installed on the side wall of the end of the positioning box. A threaded rod is fixedly connected to the output shaft of the servo motor. The end of the threaded rod away from the servo motor is rotatably connected to the side wall of the positioning box. A driving block is screwed onto the threaded rod. The driving block is slidably connected to the inner side wall of the positioning box. A limit groove is opened at the upper end of the side wall of the positioning box. The upper side of the driving block extends to the outside of the positioning box and slides with the limit groove.

[0008] Preferably, a humidity controller for adjusting the humidity of the test environment and providing real-time feedback is provided on the side of the carrier plate away from the adjustment unit.

[0009] Preferably, the adjustment unit includes a rectangular rack disposed on the side of the adjustment gear and meshing with it. A support rod is fixedly connected to the middle of the side wall of the rectangular rack away from the adjustment gear. A through hole is opened in the middle of the support rod. A fixed plate is fixedly installed on the load plate on the side of the support rod. A threaded hole is opened on the fixed plate at the position corresponding to the through hole. A "T"-shaped screw passes through the through hole and is connected to the threaded hole. A helical spring is sleeved on the "T"-shaped screw between the support rod and the fixed plate. A limit plate is fixedly installed on the "T"-shaped screw. The limit plate abuts against the side wall of the support rod away from the helical spring.

[0010] Preferably, the lower end of the rectangular rack is symmetrically equipped with a limiting rod, and a concave groove is provided on the loading plate, with the lower end of the limiting rod slidably installed in the concave groove.

[0011] Preferably, the test assembly includes an inverted bracket fixedly connected to the test station. The inverted bracket has an opening facing downwards and an adapter slot is provided on its side wall. A test unit is provided in the adapter slot, and a high-speed camera is installed on the side wall of the inverted bracket corresponding to the test unit.

[0012] Preferably, the testing unit includes a lifting platform installed in the adapter slot, an electric push rod fixedly installed at the lower end of the lifting platform, the bottom of the electric push rod being set on the testing platform, a drive motor fixedly installed on the side wall of the lifting platform, a drive disk fixedly connected to the output shaft of the drive motor, and a force-applying rod fixedly installed on the side wall of the drive disk.

[0013] Preferably, the force-applying rod is covered with a columnar flexible layer, and a pressure sensor that provides feedback on the bending rebound force of the electrical connection plug is disposed inside the columnar flexible layer.

[0014] Preferably, a temperature controller is provided on the C-shaped frame below the high-speed camera for adjusting the test environment temperature and providing real-time feedback.

[0015] The beneficial effects of this invention are: 1. This invention achieves rapid clamping of electrical connection connectors through a three-jaw chuck. The multiple sets of adjusting gears of the adjusting component cooperate with the rectangular rack to drive the electrical connection connectors to achieve multi-directional angle adjustment, adapting to electrical connectors of different specifications. At the same time, it can realize multi-directional testing of electrical connection connectors in plane, lateral, and torsional composite bending, accurately simulating the complex stress conditions in actual use and ensuring the authenticity of test results. 2. The present invention sets a limiting rod and a concave sliding groove structure in the adjustment unit to ensure the smoothness of the adjustment process and avoid jamming or offset during the adjustment process. The set helical spring can provide a clamping force after the adjustment is completed to avoid angle offset during the test. Combined with the temperature-humidity coupling mechanism, the accuracy of the test results is improved. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a first three-dimensional structural schematic diagram of the present invention; Figure 2 In this invention Figure 1 A schematic diagram of the three-dimensional structure after the protective cover has been removed; Figure 3 In this invention Figure 2 A schematic diagram of the 3D structure after removing the test components; Figure 4 This is a schematic diagram of the three-dimensional connection structure between the loading plate, the adjustment component, and the three-jaw chuck in this invention; Figure 5 In this invention Figure 4 A magnified structural diagram at point A; Figure 6 In this invention Figure 4 A magnified structural diagram at point B; Figure 7 This is a schematic diagram of the three-dimensional connection structure between the detection station and the testing components in this invention; Figure 8 This is a three-dimensional structural diagram of the test component in this invention; Figure 9 In this invention Figure 7A magnified structural diagram at point C; Figure 10 This is a schematic diagram of the electrical connection connector in this invention; Figure 11 This is a curve of bending angle, bending force, and springback collected in this invention.

[0018] In the picture: 1. Testing table; 11. Protective cover; 12. Handle; 2. Conveying assembly; 21. Positioning box; 22. Servo motor; 23. Fine-threaded rod; 24. Drive block; 3. Loading plate; 31. Humidity controller; 4. Adjustment assembly; 41. Support frame; 42. Vertical shaft; 43. Adjustment gear; 44. Adjustment unit; 441. Rectangular rack; 4411. Limiting rod; 4412. Concave groove; 442. Support rod; 443. Fixed plate; 444. "T" shaped screw; 445. Helical spring; 446. Limiting plate; 5. Three-jaw chuck; 6. Test components; 61. C-shaped frame; 62. Test unit; 621. Lifting platform; 622. Electric push rod; 623. Drive motor; 624. Drive disk; 625. Force rod; 6251. Columnar flexible layer; 63. High-speed camera; 64. Temperature controller. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Example 1: See Figures 1 to 6 as well as Figure 10 A bending resilience test device for electrical connection connectors includes a test platform 1. A conveying component 2 is provided in the middle of the test platform 1. A carrying plate 3 is fixedly connected to the upper end of the conveying component 2. An adjusting component 4 is provided on the carrying plate 3. A three-jaw chuck 5 is fixedly installed on the upper end of the adjusting component 4.

[0021] The testing table 1 is equipped with a protective cover 11. The protective cover 11 is made of transparent material and is hinged to the testing table 1 on one side. A handle 12 is installed on the outer wall of the protective cover 11 away from the hinge side.

[0022] The conveying assembly 2 includes a positioning box 21 fixedly installed at the upper middle part of the detection table 1. A servo motor 22 is fixedly installed on the side wall of the end of the positioning box 21. A threaded rod 23 is fixedly connected to the output shaft of the servo motor 22. The end of the threaded rod 23 away from the servo motor 22 is rotatably connected to the side wall of the positioning box 21. A drive block 24 is screwed onto the threaded rod 23. The drive block 24 is slidably connected to the inner side wall of the positioning box 21. A limit groove is opened at the upper end of the side wall of the positioning box 21. The upper side of the drive block 24 extends to the outside of the positioning box 21 and slides with the limit groove.

[0023] A humidity controller 31 for adjusting the humidity of the test environment and providing real-time feedback is provided on the side of the carrier plate 3 away from the adjustment unit 44.

[0024] The adjustment component 4 includes a support frame 41. The support frame 41 is fixedly connected to the upper part of the middle of the carrier plate 3. The support frame 41 is "U" shaped and its opening faces downward. Vertical shafts 42 are arranged linearly and rotated evenly on the support frame 41. Each vertical shaft 42 is fixedly connected to the lower end of an adjustment gear 43. An adjustment unit 44 is provided on the side of the adjustment gear 43 to drive multiple adjustment gears 43 to rotate synchronously, so as to realize the multi-directional bending test function of the electrical connection connector.

[0025] The adjustment unit 44 includes a rectangular rack 441 disposed on the side of the adjustment gear 43 and meshing with it. A support rod 442 is fixedly connected to the middle of the side wall of the rectangular rack 441 away from the adjustment gear 43. A through hole is opened in the middle of the support rod 442. A fixed plate 443 is fixedly installed on the load plate 3 on the side of the support rod 442. A threaded hole is opened on the fixed plate 443 at the position corresponding to the through hole. A "T"-shaped screw 444 passes through the through hole and is connected to the threaded hole. A helical spring 445 is sleeved on the "T"-shaped screw 444 between the support rod 442 and the fixed plate 443. A limit plate 446 is fixedly disposed on the "T"-shaped screw 444. The limit plate 446 abuts against the side wall of the support rod 442 away from the helical spring 445.

[0026] The lower end of the rectangular rack 441 is symmetrically equipped with a limiting rod 4411, and the loading plate 3 is provided with a concave groove 4412. The lower end of the limiting rod 4411 is slidably installed in the concave groove 4412.

[0027] In the specific operation, first, the protective cover 11 is opened by manually pulling the handle 12, and the cable connection part Y of the electrical connection plug to be tested is placed into the three-jaw chuck 5 so that the plug X is perpendicular to the horizontal plane of the test table 1. Then, the three-jaw chuck 5 is adjusted to achieve precise clamping of the electrical connection plug, ensuring that the clamping is firm and does not damage the electrical connection plug. Then, the protective cover 11 is closed. According to the test requirements, adjust the humidity controller 31 to set the required ambient humidity. The humidity controller 31 monitors the humidity of the test area in real time and provides feedback and adjustment to ensure the stability of the test environment humidity. When bending tests in different directions are required, before closing the protective cover 11, the "T"-shaped screw 444 is manually rotated. At this time, the "T"-shaped screw 444 will rotate in the threaded hole on the fixed plate 443, thereby driving the support rod 442 and the rectangular rack 441 to move horizontally under the action of the limiting plate 446. The limiting rod 4411 and the concave slide 4412 cooperate with each other to ensure the stable movement of the rectangular rack 441. The meshing of the rectangular rack 441 and the adjusting gear 43 drives the vertical shaft 42 to rotate synchronously. The helical spring 445 is compressed, thereby driving the three-jaw chuck 5 and the electrical connection plug after clamping to rotate, thereby adjusting to the required bending test direction. After the adjustment is completed, the reaction force of the helical spring 445 will drive the support rod 442 to always abut against the limiting plate 446, thereby ensuring that the rectangular rack 441 and the adjusting gear 43 are tightly meshed, avoiding angular deviation during the test. During testing, the servo motor 22 is started, which drives the threaded rod 23 to rotate, thereby causing the drive block 24 to slide along the inner wall of the positioning box 21. The drive block 24 drives the carrier plate 3, the adjustment component 4, the three-jaw chuck 5, and the clamped electrical connection plugs above it to move horizontally towards the test component 6. When the rightmost electrical connection plug moves to the test position, the servo motor 22 pauses briefly. At this time, the test component 6 completes the test process. Then the servo motor 22 continues to run, causing the next electrical connection plug to move to the test position and complete the test. This process continues until all electrical connection plugs have completed the test. During the test, the protective cover 11 can play a safety protection role. Operators can observe the test status through the protective cover 11 to avoid the electrical connection plugs from falling off or breaking and causing safety hazards.

[0028] Example 2: The technical solution is basically the same as that in Embodiment 1, see below. Figures 7 to 11 The difference is that a test component 6 is installed on the side of the carrier plate 3. The lower end of the test component 6 is fixedly connected to the test platform 1. The test component 6 includes a C-shaped frame 61 fixedly connected to the test platform 1. The C-shaped frame 61 has an opening facing downward and an adapter slot is provided on its side wall. A test unit 62 is provided in the adapter slot. A high-speed camera 63 is installed on the side wall of the C-shaped frame 61 corresponding to the test unit 62.

[0029] The test unit 62 includes a lifting platform 621 installed in the adapter slot. An electric push rod 622 is fixedly installed at the lower end of the lifting platform 621. The bottom of the electric push rod 622 is set on the test table 1. A drive motor 623 is fixedly installed on the side wall of the lifting platform 621. The output shaft of the drive motor 623 is fixedly connected to a drive disk 624. A force application rod 625 is fixedly installed on the side wall of the drive disk 624.

[0030] The force-applying rod 625 is covered with a columnar flexible layer 6251, and a pressure sensor that provides feedback on the bending rebound force of the electrical connection plug is provided inside the columnar flexible layer 6251.

[0031] A temperature controller 64 for adjusting the test environment temperature and providing real-time feedback is provided on the I-shaped frame 61 below the high-speed camera 63.

[0032] In actual operation, after the electrical connection connector is moved to the test position, the ambient temperature required for the test is set by the temperature controller 64. The temperature controller 64 monitors the temperature of the test area in real time and provides feedback for adjustment. In conjunction with the humidity controller 31, the test is carried out in a temperature and humidity coupled environment. Then, the electric push rod 622 is started, which drives the lifting platform 621 to move up and down along the adapter slot on the C-shaped frame 61, thereby adjusting the height of the force application rod 625. Then, the drive motor 623 is started, which drives the drive disk 624 to rotate. The drive disk 624 drives the force application rod 625 to make circular motion, so that the force application rod 625 makes precise contact with the free end of the electrical connection connector. The columnar flexible layer 6251 on the outside of the force application rod 625 can prevent damage to the electrical connection connector when force is applied. Finally, the force application rod 625 applies a continuous and stable bending force to the free end of the electrical connection connector to realize the bending test of the electrical connection connector. During the test, the pressure sensor inside the columnar flexible layer 6251 collects bending force data in real time, and the high-speed camera 63 simultaneously captures the bending deformation and springback process of the electrical connector. Through image recognition technology, the changes in bending angle and springback amount are accurately captured, realizing the synchronous acquisition of "bending angle - bending force - springback amount". After the bending test is completed, the drive motor 623 is turned off, the electric push rod 622 drives the lifting platform 621 to reset, the force rod 625 is separated from the electrical connection connector, and the high-speed camera 63 continues to film the springback process of the electrical connection connector until the springback is stable, thus completing the accurate measurement of the springback amount. After the test is completed, the electrical connection connectors are removed, and the next batch of samples is tested.

[0033] The working principle of this invention during use: First, manually pull handle 12 to open the protective cover 11, and place the cable connection part Y of the electrical connection connector to be tested into the three-jaw chuck 5, so that the plug X is perpendicular to the horizontal plane of the test table 1. Then adjust the three-jaw chuck 5 to achieve precise clamping of the electrical connection connector, ensuring that the clamping is firm and does not damage the electrical connection connector. Then close the protective cover 11, and adjust the humidity controller 31 according to the test requirements to set the required ambient humidity. The humidity controller 31 monitors the humidity of the test area in real time and provides feedback and adjustment to ensure the stability of the test environment humidity. Second: During testing, the servo motor 22 is activated, driving the threaded rod 23 to rotate. This causes the drive block 24 to slide along the inner wall of the positioning box 21. The drive block 24 then moves the load plate 3, adjustment assembly 4, three-jaw chuck 5, and the clamped electrical connection connector horizontally towards the test assembly 6. Once the electrical connection connector reaches the test position, the ambient temperature required for the test is set by the temperature controller 64. The temperature controller 64 monitors the temperature of the test area in real time and adjusts accordingly. In conjunction with the humidity controller 31, it achieves testing under a coupled temperature and humidity environment. Subsequently, the electric push rod 622 is activated. The electric push rod 622 drives the lifting platform 621 to move up and down along the fitting through slot on the C-shaped frame 61, thereby adjusting the height of the force application rod 625. Then, the drive motor 623 is started, which drives the drive disk 624 to rotate. The drive disk 624 drives the force application rod 625 to make circular motion, so that the force application rod 625 makes precise contact with the free end of the electrical connection plug. The columnar flexible layer 6251 on the outside of the force application rod 625 can prevent damage to the electrical connection plug during force application. Finally, the force application rod 625 applies a continuous and stable bending force to the free end of the electrical connection plug, realizing the bending test of the electrical connection plug. Third: During the test, the pressure sensor in the columnar flexible layer 6251 collects bending force data in real time, and the high-speed camera 63 simultaneously captures the bending deformation and springback process of the electrical connector. Through image recognition technology, the changes in bending angle and springback amount are accurately captured, realizing the synchronous acquisition of "bending angle - bending force - springback amount". 4. After the bending test is completed, turn off the drive motor 623, the electric push rod 622 drives the lifting platform 621 to reset, the force rod 625 separates from the electrical connection plug, and the high-speed camera 63 continues to film the springback process of the electrical connection plug until the springback is stable, thus completing the accurate measurement of the springback amount. 5. When bending tests are required in different directions, before closing the protective cover 11, manually rotate the "T"-shaped screw 444. At this time, the "T"-shaped screw 444 will rotate in the threaded hole on the fixed plate 443, thereby driving the support rod 442 and the rectangular rack 441 to move horizontally under the action of the limiting plate 446. The limiting rod 4411 and the concave slide 4412 cooperate with each other to ensure the stable movement of the rectangular rack 441. Through the meshing of the rectangular rack 441 and the adjusting gear 43, the vertical shaft 42 is driven to rotate synchronously, and the helical spring 445 is compressed, thereby driving the three-jaw chuck 5 and the electrical connection plug after clamping to rotate, thereby adjusting to the required bending test direction. After the adjustment is completed, the reaction force of the helical spring 445 will drive the support rod 442 to always abut against the limiting plate 446, thereby ensuring that the rectangular rack 441 and the adjusting gear 43 are tightly meshed, avoiding angular deviation during the test.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the bending resilience of electrical connection connectors, comprising a testing platform (1), characterized in that: A conveying assembly (2) is arranged in the middle of the detection table (1), a carrier plate (3) is fixedly connected to the upper end of the conveying assembly (2), an adjusting assembly (4) is arranged on the carrier plate (3), a three-jaw chuck (5) is fixedly installed at the upper end of the adjusting assembly (4), a testing assembly (6) is installed on a side portion of the carrier plate (3), and the lower end of the testing assembly (6) is fixedly connected to the detection table (1); Said adjusting assembly (4) comprises a support frame (41), wherein the upper end of the middle part of the carrier plate (3) is fixedly connected with the support frame (41), and the support frame (41) is in a shape of a Chinese character '匚' with its opening facing downward; vertical shafts (42), wherein the middle part of the support frame (41) is uniformly rotatably provided with the vertical shafts (42) in a linear arrangement; adjusting gears (43), wherein the lower end of each vertical shaft (42) is fixedly connected with one adjusting gear (43); an adjusting unit (44), wherein a side portion of the adjusting gears (43) is cooperatingly provided with the adjusting unit (44) that drives a plurality of adjusting gears (43) to rotate synchronously, so as to realize the multi-directional bending test function of the electrical connecting plug-in.

2. The bending resilience test device for electrical connection connectors according to claim 1, characterized in that: A protective cover (11) is arranged on the detection table (1), the protective cover (11) is made of a transparent material, one side of the protective cover (11) is hinged to the detection table (1), and a handle (12) is installed on the outer wall of the protective cover (11) away from the hinged side.

3. The bending resilience test device for electrical connection connectors according to claim 1, characterized in that: Said conveying assembly (2) comprises a positioning box (21) fixedly installed at the upper end of the middle part of the detection table (1), a servo motor (22) is fixedly installed on the end side wall of the positioning box (21), an output shaft of the servo motor (22) is fixedly connected with a dense threaded rod (23), the end of the dense threaded rod (23) away from the servo motor (22) is rotatably connected to the side wall of the positioning box (21), the dense threaded rod (23) is threadedly connected with a driving block (24), the driving block (24) is slidably connected to the inner side wall of the positioning box (21), a limiting slot is formed at the upper end of the side wall of the positioning box (21), and the upper side portion of the driving block (24) extends to the outside of the positioning box (21) and is slidably matched with the limiting slot.

4. The bending resilience test device for electrical connection connectors according to claim 1, characterized in that: A humidity controller (31) for adjusting the humidity of the test environment and performing real-time feedback is arranged on a side of the carrier plate (3) away from the adjusting unit (44).

5. The bending resilience test device for electrical connection connectors according to claim 1, characterized in that: Said adjusting unit (44) comprises a rectangular rack (441) arranged at a side portion of the adjusting gears (43) and meshed therewith, a supporting rod (442) is fixedly connected to the middle part of the side wall of the rectangular rack (441) away from the adjusting gears (43), a through hole is formed in the middle part of the supporting rod (442), a fixed plate (443) is fixedly installed on the carrier plate (3) at a side portion of the supporting rod (442), a threaded hole is formed at a position corresponding to the through hole on the fixed plate (443), a T-shaped screw (444) penetrates through the through hole and is connected to the threaded hole in a matching manner, a coil spring (445) is sleeved on the T-shaped screw (444) between the supporting rod (442) and the fixed plate (443), a limiting plate (446) is fixedly arranged on the T-shaped screw (444), and the limiting plate (446) abuts against the side wall of the supporting rod (442) away from the coil spring (445).

6. The bending resilience test device for electrical connection connectors according to claim 5, characterized in that: The lower end of the rectangular rack (441) is symmetrically equipped with a limiting rod (4411), and a concave groove (4412) is provided on the loading plate (3). The lower end of the limiting rod (4411) is slidably installed in the concave groove (4412).

7. The bending resilience test device for electrical connection connectors according to claim 1, characterized in that: The test component (6) includes a C-shaped frame (61) fixedly connected to the test station (1). The C-shaped frame (61) has an opening facing downward and an adapter slot is provided on its side wall. A test unit (62) is provided in the adapter slot. A high-speed camera (63) is installed on the side wall of the C-shaped frame (61) corresponding to the test unit (62).

8. The bending resilience test device for electrical connection connectors according to claim 7, characterized in that: The test unit (62) includes a lifting platform (621) installed in the adapter slot. An electric push rod (622) is fixedly installed at the lower end of the lifting platform (621). The bottom of the electric push rod (622) is set on the test table (1). A drive motor (623) is fixedly installed on the side wall of the lifting platform (621). A drive disk (624) is fixedly connected to the output shaft of the drive motor (623). A force rod (625) is fixedly installed on the side wall of the drive disk (624).

9. The bending resilience test device for electrical connection connectors according to claim 8, characterized in that: The force-applying rod (625) is covered with a columnar flexible layer (6251) on the outside, and a pressure sensor that provides feedback on the bending rebound force of the electrical connection plug is provided inside the columnar flexible layer (6251).

10. The bending resilience test device for electrical connection connectors according to claim 7, characterized in that: A temperature controller (64) for adjusting the test environment temperature and providing real-time feedback is provided on the C-shaped frame (61) below the high-speed camera (63).

Images