Plugging durability testing machine

Abstract

The invention relates to the technical field of connector performance detection equipment, and discloses a plugging durability testing machine which comprises a machine body frame, a controller and a testing mechanism in a testing area. A fixing assembly and a driving assembly are arranged between a first support plate and a second support plate of the test mechanism and are respectively used for fixing a plugging piece and a plugging sleeve; the motor box drives the driving assembly to reciprocate in the axial direction to achieve plugging and unplugging. An offset assembly is arranged on one side of the fixing assembly, an air cylinder is used for driving an ejector rod to apply lateral acting force to the inserting and pulling piece, linear driving is converted into rotating torque through an internal ratchet wheel and pawl rotating assembly, and the inserting and pulling piece is driven to rotate by a preset angle around the axis before inserting and pulling. Meanwhile, a multi-dimensional monitoring system is arranged, and the rotation angle, the lateral stress and the electrical performance data are collected. According to the invention, complex working conditions of the plugging member under lateral unbalance loading and different rotation angles can be simulated, an angle-based failure distribution model is established, and the structural strength and contact reliability of the connector are truly evaluated.

Description

Technical Field

[0001] This invention relates to the field of connector performance testing equipment technology, specifically a mating and extraction durability testing machine. Background Technology

[0002] As a key component in electronic devices for transmitting signals and energy, the mating life and contact stability of electrical connectors directly determine the reliability of the entire device. In the research and development and quality inspection of various consumer electronics, automotive electronics, and industrial control equipment, mating durability testing is an essential basic test. It aims to evaluate whether the connector's mechanical structure remains intact and whether its contact resistance is within acceptable limits after undergoing a specified number of mating cycles.

[0003] Most current insertion and extraction testing machines employ a single-dimensional axial drive structure, where a lead screw or crank-slider mechanism drives the male and female connectors to reciprocate along an ideal coaxial line. However, this testing method, based on "ideal alignment," deviates significantly from actual usage scenarios. In practice, users often struggle to ensure perfectly perpendicular insertion of connectors, frequently resulting in tilting angles or lateral compressive forces—the so-called "hard insertion" or "blind insertion" phenomena. Existing testing equipment struggles to simulate this lateral load condition caused by installation errors or improper operation, leading to test results that fail to reflect the true strength of the connector housing under shear force. This can easily result in missed detections of potential issues such as snap-fit ​​breakage or terminal deformation caused by uneven stress.

[0004] Furthermore, in traditional life testing, the test sample is usually stationary, meaning that insertion and removal friction is always concentrated on the same contact trajectory of the terminal plating. However, in real-world applications such as automotive vibration or handheld devices, the force direction on the connector varies randomly, and wear often occurs circumferentially on the contact surface. Existing unidirectional fixed testing methods cannot reproduce the wear distribution across the entire circumference, resulting in biased test data that fails to reveal structural weaknesses at specific angles. While some high-end equipment attempts to incorporate rotation functionality, this often requires additional expensive rotary servo motors and complex control axes, significantly increasing equipment cost and size, and making operation and maintenance more cumbersome, hindering large-scale application in conventional production lines or laboratories. Therefore, how to simultaneously simulate lateral load and automatically switch between multiple angles within a compact mechanical structure, and establish multi-dimensional failure analysis data, is a pressing technical challenge in the connector testing field. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a mating durability testing machine, which solves the problems of existing testing equipment being unable to simulate the non-ideal mating conditions of connectors caused by lateral forces and angular deviations in actual use, as well as the inability to perform full-circumferential uniform wear detection on connectors, resulting in insufficient authenticity of test data and difficulty in accurately locating the structural failure position.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plug-in durability testing machine, comprising a machine frame, a test area provided on the upper part of the machine frame, a controller provided on the right side of the test area, and a test mechanism provided inside the test area. The test mechanism includes a motor housing, a first support plate, and a second support plate. A fixing component and a driving component are respectively installed on opposite sides of the first support plate and the second support plate. The fixing component is used to fix the plug-in component, and the driving component is used to drive the plug-in sleeve to reciprocate along the axial direction to realize the plug-in action. An offset component is provided on one side of the fixing component, which is used to apply a lateral force to the plug-in component before the plug-in engagement action. A rotating component is provided inside the offset component, and the rotating component drives the plug-in component to rotate around its axis by a preset angle through mechanical linkage. A multi-dimensional monitoring system, electrically connected to the controller, is used to collect and correlate rotation angle data of the plug-in component, lateral stress data of the plug-in component, and electrical performance data during plug-in contact.

[0007] Preferably, the fixing component includes a fixing plate, which is installed on the side of the second support plate near the first support plate. A first base is bolted to the side of the fixing plate near the driving component. The first base has an internal thread, and a first bolt post is bolted to the inside of the first base. A rotating cylinder is rotatably connected to the end of the first bolt post, and the plug-in component is inserted into the inside of the rotating cylinder.

[0008] Preferably, an adjustment knob and a micrometer adjustment ruler are respectively provided on both sides of the fixing plate, both of which are used to adjust the vertical height of the fixing plate on the second support plate.

[0009] Preferably, the offset assembly includes a mounting plate, on the side of the mounting plate near the test mechanism a cylinder is mounted, the output end of the cylinder is fixedly connected to a push rod, and one side of the push rod is fixedly connected to a side plate.

[0010] Preferably, four guide rods are provided diagonally between the second support plate and the first support plate, and a motor box is provided on the side of the first support plate away from the second support plate. A linear motor is provided inside the motor box, and the output shaft of the linear motor is fixedly connected to the side wall of the first support plate.

[0011] Preferably, the rotating assembly includes a ratchet fixedly mounted on the outer wall of the rotating cylinder, a rotating seat fixedly connected to the side plate near the ratchet, a pawl mounted inside the rotating seat via a rotating shaft, and a tension spring installed between the bottom of the pawl and the side plate.

[0012] Preferably, the fixing component further includes a water inlet pipe, and a through fluid channel is provided inside the first bolt post. One end of the water inlet pipe is connected to an external water source, and the other end of the water inlet pipe is connected to the fluid channel inside the first bolt post.

[0013] Preferably, the drive assembly includes a second base, the interior of which is bolted with a second bolt post, the plug sleeve is fixedly connected to the end of the second bolt post, and the plug sleeve is coaxially and correspondingly arranged with the plug-in component.

[0014] Preferably, the bottom of the body frame is fixedly connected with multiple support legs, the lower part of the body frame is provided with multiple cabinet doors, a keyboard cabinet is provided directly below the controller, and two observation doors are symmetrically provided at the front end of the test area.

[0015] Preferably, the multidimensional monitoring system includes: A force sensing unit is disposed at the connection between the first bolt post and the first base, and is used to detect the lateral shear force on the insertion and extraction member; An angle counting unit is used to calculate the current rotation angle of the insertion / removal component by detecting the number of cylinder actuations or the rotation position of the ratchet. The data processing module is used to receive and process the lateral shear force, rotation angle and electrical performance data, and establish a plug-in failure distribution model with rotation angle as the coordinate.

[0016] This invention provides an insertion and extraction durability testing machine. It has the following beneficial effects: 1. This invention provides an offset component on the side of the fixed component. The cylinder drives the push rod to apply a lateral thrust to the plug and pull parts before insertion and extraction, causing a preset physical offset of its axis. This changes the limitation of traditional testing machines that can only perform ideal coaxial insertion and extraction. It can realistically simulate the hard insertion and lateral shearing force caused by improper operation, blind insertion or installation errors in actual use, thereby more effectively detecting the shell strength and contact stability of the connector in abnormal alignment.

[0017] 2. This invention utilizes the side plate and ratchet to convert the linear motion of the offset cylinder into the circumferential stepping motion of the ratchet, so that the plug-in component automatically rotates by a fixed angle after each lateral load test. No additional rotary servo motor is required; the cyclic action of load offset, reset, and reversal can be completed with only one drive source. This ensures that the 360-degree circumferential contact surface of the plug-in component can be subjected to lateral force tests under the same conditions, avoiding the bias of test data caused by excessive wear on one side.

[0018] 3. This invention combines a multi-dimensional monitoring system. The force sensing unit integrated at the root of the first bolt column can capture the lateral shear force under offset conditions in real time. With the data association of the angle counting unit, the controller can generate three-dimensional test data including angle, stress and electrical performance. The test results of this invention can intuitively locate the structural weak points of the plug-in component at a specific angle, providing accurate data support for product structural optimization. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 A schematic diagram illustrating the structure of the testing mechanism of this invention; Figure 3 A partial structural diagram of the guide rod of the present invention is provided to highlight its features. Figure 4 for Figure 3 Enlarged view of A in the middle; Figure 5 A partial structural diagram of the fixing plate of the present invention is shown; Figure 6 An exploded view of the side plate of the present invention is provided to highlight its structure. Figure 7 for Figure 5 Enlarged view of B in the middle; Figure 8 This is a schematic diagram of the structure of the second bolted column of the present invention.

[0020] The components include: 1. Body frame; 101. Test area; 102. Cabinet door; 103. Controller; 104. Observation door; 105. Support legs; 106. Keyboard cabinet; 2. Test mechanism; 21. Motor box; 22. First support plate; 23. Second support plate; 24. Guide rod; 25. Fixing assembly; 251. Fixing plate; 252. First base; 253. Adjustment knob; 254. Micrometer adjustment scale; 255. 256. Water inlet pipe; 257. Internal thread; 258. First bolt post; 259. Rotary cylinder; 26. Drive assembly; 261. Second base; 262. Second bolt post; 3. Offset assembly; 301. Mounting plate; 302. Cylinder; 303. Push rod; 304. Side plate; 305. Rotating seat; 306. Pawl; 307. Rotating shaft; 308. Tension spring; 309. Ratchet; 4. Insert / extractor; 5. Insert / extractor sleeve. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 - Appendix Figure 8 This invention provides a plug-in durability testing machine, comprising a frame 1. The frame 1 has a test area 101 at its upper part, a controller 103 on its right side, multiple supports 105 fixedly connected to its bottom, multiple cabinet doors 102 at its lower part, a keyboard cabinet 106 directly below the controller 103, two observation doors 104 symmetrically arranged at the front of the test area 101, and a test mechanism 2 inside the test area 101. The test mechanism 2 includes a motor housing 21, a first support plate 22, and a second support plate 23, which are connected to each other. A fixing component 25 and a driving component 26 are respectively installed on one side of the device. The fixing component 25 is used to fix the plug-in component 4, and the driving component 26 is used to drive the plug-in sleeve 5 to move back and forth along the axial direction to realize the plug-in action. An offset component 3 is provided on one side of the fixing component 25, which is used to apply a lateral force to the plug-in component 4 before the plug-in action. A rotating component is provided inside the offset component 3. The rotating component drives the plug-in component 4 to rotate around its axis by a preset angle through mechanical linkage. A multi-dimensional monitoring system is electrically connected to the controller 103 and is used to collect and associate the rotation angle data of the plug-in component 4, the lateral stress data of the plug-in component 4, and the electrical performance data when plugging and pulling.

[0023] Specifically, the main structure of this device is supported by the frame 1. The test area 101 is located on the upper part of the frame 1, forming an independent working cavity, which facilitates the operator to clamp and debug samples. A controller 103 is embedded in the right panel of the test area 101. The controller 103 serves as the human-machine interface for the entire device, used to set parameters such as insertion and removal speed, number of tests, and off-center load force, and to display the test status in real time.

[0024] To ensure the equipment is placed horizontally and stably, multiple support legs 105 are fixedly connected to the four corners of the bottom of the frame 1. These support legs 105 typically have height adjustment capabilities. The lower space of the frame 1 is designed as a storage or electrical installation compartment, which is enclosed and protected by multiple cabinet doors 102. For ease of data entry and operation, a pull-out keyboard cabinet 106 is designed directly below the controller 103. Furthermore, considering safety and visibility during testing, two observation doors 104 are symmetrically installed at the front of the test area 101. These doors are typically inlaid with transparent materials such as explosion-proof acrylic or tempered glass, allowing researchers to clearly observe the internal mechanical movements without opening the cabinet doors 102. Deep inside the test area 101, the core test mechanism 2 is located. This mechanism mainly consists of a motor housing 21, a first support plate 22, and a second support plate 23 forming a skeletal structure. The first support plate 22 and the second support plate 23 are parallel and vertically aligned. On their opposing inner sidewalls, fixing components 25 and driving components 26 are respectively installed. Specifically, the fixing component 25 is mainly used to install and fix the plug-in component 4 to be tested, and in this embodiment it has a specific degree of rotational freedom. In contrast, the driving component 26 is used to install the plug-in sleeve 5 and is driven by the power source in the motor housing 21 to drive the plug-in sleeve 5 to perform high-precision reciprocating linear motion along the axial direction, thereby simulating the insertion and removal of the connector.

[0025] To simulate harsh insertion and removal conditions in reality, an offset component 3 is specially equipped on one side of the fixed component 25. The function of this component is to break the ideal coaxial insertion and removal state, and to actively apply a fixed lateral force to the insertion / removal component 4 before each insertion / removal action, causing a slight shift in its position or angle. Furthermore, the offset component 3 cleverly integrates a rotating component, which uses the principle of mechanical linkage to convert the lateral driving linear motion into rotational torque, driving the insertion / removal component 4 to rotate around its own axis by a preset angle, such as 15 degrees or 30 degrees each time, thereby realizing the wear test of the insertion / removal component 4 in the full circumference.

[0026] In conjunction with the aforementioned mechanical actions, this embodiment also includes a multi-dimensional monitoring system. This system is electrically connected to the controller 103, forming a closed-loop feedback loop. Its core function is not only counting, but also simultaneously collecting and correlating three sets of key data: first, the current rotation angle data of the plug-in / plug-out component 4, clarifying which direction of the contact point is being tested; second, the lateral stress data borne by the plug-in / plug-out component 4 under offset conditions; and third, the electrical performance data at the moment of plugging / plugging contact. Through comprehensive analysis of these data, the spatial location and stress cause of product failure can be accurately determined.

[0027] Please see the appendix Figure 2 - Appendix Figure 5The fixing component 25 includes a fixing plate 251, which is installed on the side of the second support plate 23 near the first support plate 22. Four guide rods 24 are provided through the diagonal between the second support plate 23 and the first support plate 22. A motor box 21 is provided on the side of the first support plate 22 away from the second support plate 23. A linear motor is provided inside the motor box 21, and the output shaft of the linear motor is fixedly connected to the side wall of the first support plate 22. A first base 252 is bolted to the side of the fixed plate 251 near the drive assembly 26. The first base 252 has an internal thread 256. A first bolt post 257 is bolted to the inside of the first base 252. A rotating cylinder 258 is rotatably connected to the end of the first bolt post 257. The plug-in part 4 is inserted into the inside of the rotating cylinder 258. An adjustment knob 253 and a micrometer adjustment scale 254 are respectively provided on both sides of the fixed plate 251. Both are used to adjust the vertical height of the fixed plate 251 on the second support plate 23. The fixing component 25 also includes a water inlet pipe 255. The inside of the first bolt post 257 is provided with a through fluid channel. One end of the water inlet pipe 255 is connected to an external water source, and the other end of the water inlet pipe 255 is connected to the fluid channel inside the first bolt post 257.

[0028] Specifically, the basic support component of the fixed assembly 25 is the fixed plate 251, which is securely installed on the inner side of the second support plate 23, i.e., the side closest to the first support plate 22, using high-strength bolts. This ensures that the fixed assembly 25 and the opposite drive assembly 26 are on the same axial reference. To construct a stable and parallel motion frame, the first support plate 22 and the second support plate 23 are connected by four high-precision guide rods 24. These four guide rods 24 are rectangularly distributed at the diagonals, not only supporting the frame but, more importantly, providing a precise guiding reference for the reciprocating motion of the drive assembly 26, ensuring the coaxiality of the insertion and extraction actions. A motor housing 21 is installed on the side of the first support plate 22 away from the test center, i.e., away from the second support plate 23. The housing integrates a high-performance linear motor. It should be noted that, to achieve the reciprocating motion of the drive assembly 26, the output shaft of the linear motor passes through the first support plate 22 and is connected to the drive assembly 26 for transmission. Through the precise feed control of the linear motor, the insertion and extraction speed and stroke can be adjusted at the micrometer level.

[0029] On the side of the fixed plate 251 facing the drive assembly 26, a first base 252 is bolted together. This base is the core base that supports the plug-in component 4. The center of the first base 252 has an internal thread 256, which is matched with a first bolt post 257. The first bolt post 257 is screwed into the base through the thread, achieving a stable connection.

[0030] To enable the rotational testing of the insert / removable component 4, a hollow rotating cylinder 258 is rotatably connected to the cantilever end of the first bolt post 257 via a bearing. The insert / removable component 4 to be tested is tightly inserted or snapped into the internal cavity of the rotating cylinder 258, allowing the insert / removable component 4 to rotate freely relative to the first bolt post 257 along with the rotating cylinder 258, while the first bolt post 257 itself remains stationary. Furthermore, to accommodate the centering requirements of samples of different sizes, the fixing plate 251 is designed with a fine-tuning function, with precision adjustment knobs 253 and matching micrometer adjustment scales 254 on both sides. The operator can drive the internal lead screw mechanism by rotating the adjustment knobs 253, causing the fixing plate 251 and the entire fixing assembly 25 to move slightly along the vertical Y-axis on the second support plate 23, and read the values ​​using the micrometer adjustment scale 254, thereby achieving precise calibration of the insertion / removable component center height and eliminating installation errors.

[0031] To further simulate connector performance in humid or liquid environments, the fixing assembly 25 also integrates a fluid testing function, specifically including an externally connected water inlet pipe 255. In conjunction with this, the first bolt post 257 is designed as a hollow structure with a through-flow fluid channel inside its axis. One end of the water inlet pipe 255 is connected to a laboratory water source or a specific medium source such as salt water or oil, while the other end is sealed to the fluid channel inlet inside the first bolt post 257. When testing is required, liquid can enter through the water inlet pipe 255, pass through the first bolt post 257, and be directly injected into the interior of the rotating cylinder 258 and the back cavity of the insertion / removal component 4, thereby enabling live insertion / removal testing after water is injected into the connector, effectively evaluating the product's insulation performance in cases of seal failure or extreme environments.

[0032] Please see the appendix Figure 3 Appendix Figure 6 and attached Figure 7 The offset assembly 3 includes a mounting plate 301. A cylinder 302 is mounted on the side of the mounting plate 301 near the test mechanism 2. A push rod 303 is fixedly connected to the output end of the cylinder 302. A side plate 304 is fixedly connected to one side of the push rod 303. The rotating assembly includes a ratchet 309 fixedly mounted on the outer wall of the rotating cylinder 258. A rotating seat 305 is fixedly connected to the side plate 304 near the ratchet 309. A pawl 306 is mounted inside the rotating seat 305 through a rotating shaft 307. A tension spring 308 is installed between the bottom of the pawl 306 and the side plate 304.

[0033] Specifically, the offset component 3, as the core mechanism for realizing off-center load simulation and automatic rotation, has a precise and compact structural layout. The offset component 3 is fixed to the side of the frame of the test mechanism 2 by a high-rigidity mounting plate 301, ensuring that it maintains a relatively static position relative to the fixed component 25. On the side of the mounting plate 301 facing the center of the test mechanism 2, a power source - cylinder 302 is horizontally mounted. This cylinder 302 is typically a short-stroke, high-thrust standard cylinder, and its direction of action is perpendicular to the axis of the insert 4.

[0034] The piston rod output end of cylinder 302 is fixedly connected to a robust push rod 303 via threads or a coupling. When cylinder 302 extends, push rod 303 directly applies a lateral thrust to the insertion / extraction component 4 or the rotating cylinder 258 it is located, forcing the insertion / extraction component 4 to undergo a slight radial displacement or tilt before insertion / extraction, thus simulating the insertion / extraction condition under lateral force. To achieve the conversion from linear motion to rotational motion, a side plate 304 is rigidly connected to the side or end extension of push rod 303. This side plate 304, as a key intermediary component for mechanical linkage, reciprocates linearly in sync with push rod 303, and its extended end extends to the ratchet 309 of rotating cylinder 258, providing the necessary mechanical displacement input for the subsequent stepping rotation of insertion / extraction component 4.

[0035] A ratchet 309 is coaxially mounted and fixed on the outer circumferential wall of the rotating cylinder 258. The ratchet 309 has evenly distributed unidirectional teeth. A rotating seat 305 is fastened to the side plate 304, which reciprocates with the cylinder 302, on the side closest to the ratchet 309, by screws. This rotating seat 305 provides a stable fulcrum for the pawl 306. Specifically, the pawl 306 is hinged to the rotating seat 305 via a precision pivot 307, allowing the pawl 306 to swing flexibly within a certain angle range around the pivot 307.

[0036] To ensure that the pawl 306 always maintains effective engagement or a reset tendency with the ratchet 309, a tension spring 308 is connected between the bottom end of the pawl 306 and the fixing point of the side plate 304. Working principle description: When the side plate 304 moves forward, the pawl 306 locks in position under the action of the tension spring 308, pushing against one tooth surface of the ratchet 309, driving the rotating drum 258 to rotate; when the side plate 304 retracts, the pawl 306 overcomes the force of the tension spring 308 and slides over the back of the ratchet 309 tooth, completing the reset and preparing for the next engagement.

[0037] Please see the appendix Figure 8 The drive assembly 26 includes a second base 261, with a second bolt post 262 bolted inside the second base 261. The plug sleeve 5 is fixedly connected to the end of the second bolt post 262, and the plug sleeve 5 is coaxially and correspondingly arranged with the plug part 4.

[0038] Specifically, the drive assembly 26, as the active unit for performing the insertion and extraction actions, is structurally designed with a focus on connection stability and alignment accuracy. The main body of this assembly is a block-shaped second base 261, whose bottom is connected to the linear drive mechanism on the side of the first support plate 22 or slidably mounted on the guide rod 24, receiving axial power transmitted by the motor. At the center of the second base 261, a second bolt post 262 is fastened with high-strength bolts. This bolt post extends along the horizontal axis towards the fixed assembly 25, forming the central axis for transmitting the insertion and extraction force.

[0039] At the end of the second bolt post 262, i.e., the end facing the fixing assembly 25, the plug-in sleeve 5 is inserted into the end of the second bolt post 262. To ensure the validity of the test data and prevent accidental damage to the sample, during the installation and commissioning phase, it must be ensured that the plug-in sleeve 5 and the opposite plug-in piece 4 maintain a strict coaxial correspondence. This means that the central axes of both must be located on the same horizontal straight line, ensuring that when the drive assembly 26 moves forward, the plug-in sleeve 5 can accurately complete the insertion action with the plug-in piece 4, and can smoothly disengage when retracting, thereby simulating the standard connector insertion and removal process.

[0040] Please see the appendix Figure 3 - Appendix Figure 7 The multidimensional monitoring system includes: A force sensing unit is located at the connection between the first bolt post 257 and the first base 252, and is used to detect the lateral shear force on the plug-in component 4. An angle counting unit is used to calculate the current rotation angle of the insert 4 by detecting the number of times the cylinder 302 actuates or the rotation position of the ratchet 309. The data processing module is used to receive and process lateral shear force, rotation angle and electrical performance data, and establish a plug-in failure distribution model with rotation angle as the coordinate.

[0041] Specifically, the system first includes a highly sensitive force sensing unit, which is cleverly integrated at the mechanical connection interface between the first bolt post 257 and the first base 252, for example, using a flange-type, piezoelectric, or strain gauge sensor. Since the plug-in component 4 is directly mounted on the first bolt post 257, when the offset assembly applies a lateral thrust or when it is plugged in or removed under non-ideal alignment conditions, the resulting radial force is directly transmitted to this connection point. Therefore, the sensor can detect the lateral shear force value experienced by the plug-in component 4 in real time and accurately, providing direct evidence for evaluating the bending strength of the connector housing and the stress condition of the terminals.

[0042] Secondly, to achieve the tracking of the test orientation, the system is equipped with an angle counting unit. This unit counts using two logics: one is to count the number of extension and retraction movements of cylinder 302 by a sensor installed on the cylinder 302 circuit, and calculate the cumulative rotation angle by combining this with the number of teeth on ratchet 309; the other is to directly install a photoelectric encoder or Hall sensor next to ratchet 309 or rotating cylinder 258 to physically detect its rotation position. Regardless of the method used, this unit can calculate and feedback the current rotation angle of the plug-in component 4 relative to its initial position in real time, such as 0°, 90°, 180°, etc., ensuring that each set of test data corresponds to the specific physical orientation of the product.

[0043] Finally, all the acquired raw signals are aggregated into a data processing module, typically integrated within the controller 103. This module possesses powerful computing capabilities, enabling it to simultaneously receive and process lateral shear forces from sensors, rotation angles from counting units, and electrical performance data such as contact resistance and transient fault monitoring detected by circuits using the Kelvin four-wire method. Based on this multi-source heterogeneous data, the processing module can construct a three-dimensional analysis model—a plug-in failure distribution model with rotation angles as coordinates. Through this model, testers can visually observe on polar coordinate graphs or 3D contour maps which angles the connector experiences the greatest force and at which angles resistance anomalies first occur, thus quickly locating design flaws or manufacturing shortcomings in the product.

[0044] Working principle: The plug-in component 4 to be tested is inserted and fixed inside the rotating cylinder 258 of the fixing assembly 25, and the matching plug-in sleeve 5 is fixedly connected to the end of the second bolt post 262 of the driving assembly 26. The fixing plate 251 is driven to slide on the second support plate 23 by adjusting the knob 253, calibrating the axial height of the first bolt post 257 and the second bolt post 262, so that the plug-in component 4 and the plug-in sleeve 5 are coaxially aligned in the horizontal direction.

[0045] At the start of the test, the controller 103 first drives the cylinder 302 of the offset assembly 3 to extend. The cylinder 302 pushes the push rod 303 and the side plate 304 to move linearly towards the fixed assembly 25. During this process, the end of the push rod 303 directly abuts against the outer wall of the rotating cylinder 258, applying radial thrust to put the insertion / extraction piece 4 in a lateral force state. At the same time, the side plate 304 drives the rotating seat 305 to move, and the pawl 306 on it, under the tension of the tension spring 308, engages in the tooth groove of the ratchet 309 fixed on the outside of the rotating cylinder 258, pushing the ratchet 309, together with the rotating cylinder 258 and the insertion / extraction piece 4, to rotate around the first bolt post 257 by one tooth pitch. When the cylinder 302 retracts, the pawl 306 slides over the back of the teeth of the ratchet 309 to reset, ready for the next action.

[0046] After the plug-in component 4 completes the angle switching and maintains lateral force, the linear motor in the motor housing 21 starts, and its output shaft drives the drive assembly 26 and the plug-in sleeve 5 to make linear feed motion along the guide rod 24 towards the fixing assembly 25. The plug-in sleeve 5 is inserted into the plug-in component 4, which has been rotated into place and is under force, to complete the electrical connection. Then the motor reverses and drives the plug-in sleeve 5 to retract. Throughout this process, the force sensing unit located at the connection between the first bolt post 257 and the first base 252 senses the lateral shear force signal in real time, the angle counting unit records the current rotation position signal, and the multi-dimensional monitoring system synchronously transmits the above mechanical signals and electrical conduction signals to the controller 103 for recording and processing.

[0047] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A insertion and extraction durability testing machine, comprising a machine frame (1) and a multi-dimensional monitoring system, characterized in that, The upper part of the body frame (1) is provided with a test area (101), and a controller (103) is provided on the right side of the test area (101). The test area (101) is provided with a test mechanism (2). The test mechanism (2) includes a motor box (21), a first support plate (22) and a second support plate (23). A fixing component (25) and a driving component (26) are respectively installed on opposite sides of the first support plate (22) and the second support plate (23). The fixing component (25) is used to fix the plug-in component (4), and the driving component (26) is used to drive the plug-in sleeve (5) to move back and forth along the axial direction to realize the plug-in action. An offset component (3) is provided on one side of the fixed component (25) for applying a lateral force to the plug-in component (4) before the plug-in action. A rotating component is provided inside the offset component (3). The rotating component drives the plug-in component (4) to rotate around its axis by a preset angle through mechanical linkage. The multidimensional monitoring system is electrically connected to the controller (103) and is used to collect and associate the rotation angle data of the plug-in component (4), the lateral stress data of the plug-in component (4), and the electrical performance data when plugging and unplugging.

2. The insertion and extraction durability testing machine according to claim 1, characterized in that, The fixing component (25) includes a fixing plate (251), which is installed on the side of the second support plate (23) near the first support plate (22). The fixing plate (251) is bolted to the side of the drive component (26) with a first base (252). The first base (252) has an internal thread (256) inside. The first base (252) is bolted to a first bolt post (257). The end of the first bolt post (257) is rotatably connected to a rotating cylinder (258). The plug-in component (4) is inserted into the inside of the rotating cylinder (258).

3. The insertion and extraction durability testing machine according to claim 2, characterized in that, The fixing plate (251) is provided with an adjustment knob (253) and a micrometer adjustment ruler (254) on both sides, both of which are used to adjust the vertical height of the fixing plate (251) on the second support plate (23).

4. The insertion and extraction durability testing machine according to claim 2, characterized in that, The offset assembly (3) includes a mounting plate (301), on which a cylinder (302) is mounted near the test mechanism (2). A push rod (303) is fixedly connected to the output end of the cylinder (302), and a side plate (304) is fixedly connected to one side of the push rod (303).

5. The insertion and extraction durability testing machine according to claim 1, characterized in that, Four guide rods (24) are provided diagonally between the second support plate (23) and the first support plate (22). A motor box (21) is provided on the side of the first support plate (22) away from the second support plate (23). A linear motor is provided inside the motor box (21), and the output shaft of the linear motor is fixedly connected to the side wall of the first support plate (22).

6. The insertion and extraction durability testing machine according to claim 4, characterized in that, The rotating assembly includes a ratchet (309) fixedly mounted on the outer wall of the drum (258), a rotating seat (305) fixedly connected to the side plate (304) near the ratchet (309), a pawl (306) is mounted inside the rotating seat (305) via a rotating shaft (307), and a tension spring (308) is installed between the bottom of the pawl (306) and the side plate (304).

7. The insertion and extraction durability testing machine according to claim 2, characterized in that, The fixing component (25) also includes a water inlet pipe (255). The first bolt post (257) has a through fluid channel inside. One end of the water inlet pipe (255) is connected to an external water source, and the other end of the water inlet pipe (255) is connected to the fluid channel inside the first bolt post (257).

8. The insertion and extraction durability testing machine according to claim 1, characterized in that, The drive assembly (26) includes a second base (261), and a second bolt post (262) is bolted inside the second base (261). The plug sleeve (5) is fixedly connected to the end of the second bolt post (262), and the plug sleeve (5) is coaxially corresponding to the plug part (4).

9. The insertion and extraction durability testing machine according to claim 1, characterized in that, The bottom of the body frame (1) is fixedly connected with multiple support legs (105), the lower part of the body frame (1) is provided with multiple cabinet doors (102), the keyboard cabinet (106) is provided directly below the controller (103), and two observation doors (104) are symmetrically provided at the front end of the test area (101).

10. The insertion and extraction durability testing machine according to claim 6, characterized in that, The multidimensional monitoring system includes: A force sensing unit is disposed at the connection between the first bolt post (257) and the first base (252) to detect the lateral shear force on the plug-in component (4); An angle counting unit is used to calculate the current rotation angle of the plug-in component (4) by detecting the number of times the cylinder (302) operates or the rotation position of the ratchet (309); The data processing module is used to receive and process the lateral shear force, rotation angle and electrical performance data, and establish a plug-in failure distribution model with rotation angle as the coordinate.

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