Electric automobile wire harness joint test tool and test method thereof

Abstract

The invention discloses an electric automobile wire harness connector test tool and a test method thereof, and belongs to the technical field of electric automobile wire harness connector test.The electric automobile wire harness connector test tool comprises a bottom plate and a detection box, the detection box is arranged on the upper surface of the bottom plate, a cushion block and a fixing plate are installed on the upper surface of the bottom plate, and a vibration mechanism is arranged on the upper surface of the cushion block; the vibration mechanism comprises a vibration motor installed on the upper surface of the cushion block. Through the vibration mechanism composed of the vibration motor, the rotating disc, the connecting column and the like, the vibration motor drives the rotating disc to rotate, the connecting column drives the connecting rod to push and pull the detection box in a reciprocating mode, bumping and vibration of road conditions in the running process of an electric automobile can be simulated, alternating stress actually borne by a wire harness connector is reproduced, and a test result fits an actual scene; problems of joint loosening, poor contact and the like caused by bumping can be effectively detected, risks of power failure and insulation layer abrasion caused by vibration are checked, key support is provided for reliability verification of the wire harness joint, potential safety hazards in vehicle use are reduced, and use safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicle wiring harness connector testing, and in particular to an electric vehicle wiring harness connector testing tool and a testing method thereof. BACKGROUND

[0002] Under the global new energy transformation tide, the electric vehicle industry is moving towards the stage of large-scale and high-quality development at an explosive speed. With the continuous improvement of users' requirements for vehicle use experience, safety and reliability have surpassed factors such as endurance and price, becoming the core consideration dimension of consumers' vehicle purchase decision, and also the lifeline of the sustainable and healthy development of the entire industry. As the "nerve network" and "energy blood vessel" of the electric vehicle electrical system, the wiring harness shoulders the dual core missions of stabilizing the transmission of high-voltage electric energy to support the operation of key components such as drive motors and battery management systems, and accurately transmitting control signals to ensure the collaborative operation of intelligent modules such as vehicle-mounted chips, sensors, and autonomous driving systems. In the entire wiring harness system, the connector part is the "throat pass", and the precision of the manufacturing process, the durability of the material selection, and the stability of the connection directly determine the efficiency of electric power transmission and the accuracy of signal transmission. Therefore, it can be said that the quality level of the wiring harness connector is a key indicator for measuring the running safety level, performance stability, and service life of the entire electric vehicle, and is also an important technical fulcrum for vehicle manufacturers to achieve product differentiation competition and win user trust.

[0003] During the actual operation of electric vehicles, the continuous jolting and vibration caused by complex road conditions will cause the wiring harness connector to continuously bear alternating stress, and the severe change in temperature will also cause the wiring harness material to expand and contract. The stress and temperature changes under different working conditions will seriously affect the stability and reliability of the wiring harness connector. The existing test tool cannot simulate these actual working conditions, so it is difficult to detect potential problems comprehensively. When the vehicle is driving on a bumpy road, the wiring harness connector that is not detected by the test tool may be loose, which may cause instantaneous power failure, affecting the power output and control performance of the vehicle, and even causing traffic accidents. Under different temperature environments, the wiring harness insulation layer that is not captured by the test tool may soften and wear, which may cause a short circuit and cause serious safety accidents such as vehicle fire. Therefore, the existing test tool cannot accurately simulate actual working conditions and cannot provide reliable protection for the safe operation of electric vehicles, increasing the safety risk of vehicles during use and being not conducive to the healthy development of the electric vehicle industry. SUMMARY

[0004] The purpose of the present application is to solve the problem in the prior art that it is not convenient to simulate the continuous jolting and vibration caused by complex road conditions, which will cause the wiring harness connector to continuously bear alternating stress, and the stress and temperature changes under different working conditions will seriously affect the stability and reliability of the wiring harness connector. A kind of electric vehicle wiring harness connector testing tool and a testing method thereof are provided.

[0005] In order to achieve the above object, the present application adopts the following technical solutions:

[0006] A test tool and test method for an electric vehicle wiring harness connector, comprising a base plate and a detection box, the detection box is arranged on the upper surface of the base plate, the upper surface of the base plate is provided with a pad and a fixed plate, the upper surface of the pad is provided with a vibration mechanism, the vibration mechanism comprises a vibration motor mounted on the upper surface of the pad, the output end of the vibration motor is connected with a turntable, the outer surface of the turntable is provided with a connecting column, the end of the connecting column away from the turntable is connected with a stop block, the outer surface of the stop block is connected with a connecting rod, the outer surface of the connecting rod is connected with a telescopic rod, the outer surface of the telescopic rod is sleeved with a spring, and the telescopic end of the telescopic rod is connected with the outer surface of the detection box.

[0007] Preferably, the outer surface of the detection box is connected with a mounting seat, the end of the connecting rod away from the connecting column is rotatably connected in the inner part of the mounting bracket, the bottom surface of the detection box is connected with a sliding block, and the inner part of the base plate is provided with a sliding groove matched with the sliding block.

[0008] The inner part of the detection box is provided with a refrigeration device, a heating assembly, a temperature monitoring module and a transverse moving mechanism, and the heating assembly comprises a shell arranged in the inner part of the detection box.

[0009] Preferably, the inner part of the shell is provided with a fan and a heating device, the outer surface of the heating device is connected with an electric heating wire, the upper surface of the shell is provided with a filter plate, and the bottom surface of the shell is provided with a strip-shaped hole.

[0010] Preferably, the transverse moving mechanism comprises a first shell arranged in the inner part of the detection box, the inner part of the first shell is provided with a moving motor and a supporting plate, the output end of the moving motor penetrates through the supporting plate and is connected with a first threaded rod, and the end of the first threaded rod away from the moving motor is rotatably connected in the inner part of the first shell.

[0011] Preferably, the outer surface of the first threaded rod is threadedly connected with a first threaded sleeve, the outer surface of the first threaded sleeve is connected with a first limiting block, the upper surface of the shell is provided with a first limiting groove, and the end of the first limiting block away from the first threaded sleeve penetrates through the first limiting groove and is provided with an electric push rod.

[0012] Preferably, the longitudinal moving mechanism comprises a mounting bracket arranged at the output end of the electric push rod, the inner part of the mounting bracket is provided with an electric sliding rail, and the outer surface of the electric sliding rail is slidably connected with a sliding seat.

[0013] Preferably, the outer surface of the sliding seat is connected with a fixing block and a pointer, the upper surface of the mounting frame is provided with a scale stamp matched with the pointer, the outer surface of the fixing block is connected with a clamping mechanism, and the clamping mechanism comprises a second housing mounted on the outer surface of the fixing block.

[0014] Preferably, the second housing is internally provided with a double-shaft motor, two output ends of the double-shaft motor are connected with second threaded rods, one end of each second threaded rod away from the double-shaft motor is rotationally connected to the inside of the second housing, and the outer surface of each second threaded rod is threadedly connected with a second threaded sleeve.

[0015] The outer surface of each second threaded sleeve is connected with a second limiting block, the upper surface of the second housing is provided with two second limiting grooves, and the side of each second limiting block away from the second threaded sleeve is connected to the clamping plate after penetrating through the second limiting groove. The side of each clamping plate away from the second limiting groove is connected with a rubber pad.

[0016] Preferably, the detection box is internally provided with a detection plate, the front surface of the detection box is hingedly connected with a sealing door, the bottom surface of the bottom plate is connected with four supporting legs, and the upper surface of the bottom plate is provided with a control panel.

[0017] A test tool and test method for an electric vehicle wire harness connector, comprising the following steps:

[0018] Step one: start the vibration motor of the vibration mechanism through the control panel, the output end of the vibration motor drives the rotation of the rotating disc, the connecting column on the outer surface of the rotating disc makes a circular motion with the rotating disc, thereby pulling the connecting rod, and the other end is rotationally connected to the mounting frame of the mounting seat on the outer surface of the detection box. Therefore, the circular motion of the connecting column can be converted into the reciprocating pushing and pulling action of the connecting rod on the detection box, simulating the bumping vibration in the vehicle driving.

[0019] Step two: the telescopic rod on the fixing plate expands and contracts synchronously with the movement of the detection box, and the spring on the outer surface thereof is compressed or stretched. On the one hand, the impact force when the detection box moves is absorbed by the elastic buffer of the spring, reducing the wear of the components. On the other hand, through the guiding action of the telescopic rod, the detection box is further prevented from deviating from the track during the vibration process, providing a reliable environment for the performance test of the wire harness connector in the detection box under the vibration working condition.

[0020] Step 3: Start the cooling device and heating component separately via the control panel, and then use the temperature monitoring module to control the temperature. The cooling device uses the low-temperature conditions of an electric vehicle driving in cold regions as a reference. Through the internal compressor cooling cycle, it transfers heat from inside the test chamber to the outside, quickly lowering the temperature inside the chamber to simulate a low-temperature environment. The heating component's internal heating element powers the heating wire, which heats up rapidly. At the same time, the fan runs synchronously, accelerating the airflow inside the casing and distributing heat evenly throughout the test chamber to simulate a high-temperature environment. Meanwhile, the temperature monitoring module constantly collects the temperature data inside the test chamber and feeds it back to the external control panel in real time. If the temperature deviates from the preset value, the control panel immediately adjusts the cooling power of the cooling device or the heating power of the heating component based on the feedback to ensure stable temperature throughout the test and guarantee the accuracy of the test results.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. This electric vehicle wiring harness connector testing fixture and method utilizes a vibration mechanism consisting of a vibration motor, a turntable, and connecting columns. When the vibrating motor drives the turntable to rotate, the connecting columns drive the connecting rod to reciprocately push and pull the test box, simulating the continuous bumps and vibrations caused by complex road conditions during electric vehicle operation. This reproduces the alternating stress experienced by the wiring harness connector in actual operation, making the test results more consistent with real-world usage scenarios. It effectively detects problems such as loosening and poor contact that may occur due to bumps, comprehensively investigates the risk of power outages caused by vibration-induced loosening, and the risk of insulation wear due to long-term stress, providing crucial support for the reliability verification of wiring harness connectors, reducing safety hazards in actual vehicle use, and contributing to improved overall vehicle safety performance.

[0023] 2. The electric vehicle wiring harness connector testing fixture and its testing method utilize the sliding fit between the slider on the bottom surface of the test box and the slide groove on the base plate, combined with the buffering effect of the telescopic rod and spring on the fixed plate. This not only guides the test box to move stably back and forth along a fixed trajectory to avoid test deviation, but also absorbs impact force through the spring to reduce component wear. Furthermore, the rotating connection design between the mounting base and the connecting rod ensures smooth vibration transmission and avoids jamming or damage caused by hard connections. The overall stability and controllability of the structure provide a reliable guarantee for long-term high-frequency testing.

[0024] 3、The electric vehicle wiring harness connector test tool and its testing method, through the refrigeration device, the heating assembly and the temperature monitoring module, can simulate the running conditions of the electric vehicle under different environmental temperatures, the refrigeration device can quickly reduce the temperature in the box to restore the cold scene, the heating assembly can heat the air through the cooperative operation of the fan, the heating device and the heating wire inside the shell, and then uniformly diffuse the heated air through the filter plate, and assist air circulation through the strip-shaped hole to simulate a high-temperature environment, and the temperature monitoring module can also monitor the temperature in the box in real time, ensure the accuracy and stability of the simulated temperature, cover the scenes of thermal expansion, contraction, loosening or insulation layer softening of the wiring harness connector due to temperature changes, and deepen the testing dimension, in addition, the temperature monitoring module and the refrigeration and heating device form an intelligent closed-loop control system, which can feedback temperature data in real time, capture subtle performance changes of the wiring harness connector at a specific temperature, and troubleshoot potential faults in advance, providing accurate and reliable data support for the reliability verification of the electric vehicle wiring harness connector, and helping to improve the safety and stability of the vehicle electrical system. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 An internal structure diagram of an electric vehicle wiring harness connector test tool and its testing method is proposed in the present application;

[0026] Figure 2 A right view of an electric vehicle wiring harness connector test tool and its testing method is proposed in the present application;

[0027] Figure 3 A left view of an electric vehicle wiring harness connector test tool and its testing method is proposed in the present application;

[0028] Figure 4 A three-dimensional structure diagram of a vibration mechanism in an electric vehicle wiring harness connector test tool and its testing method is proposed in the present application;

[0029] Figure 5 An internal structure diagram of a heating assembly in an electric vehicle wiring harness connector test tool and its testing method is proposed in the present application;

[0030] Figure 6 An internal structure diagram of a horizontal moving mechanism in an electric vehicle wiring harness connector test tool and its testing method is proposed in the present application;

[0031] Figure 7 A three-dimensional structure diagram of a vertical moving mechanism in an electric vehicle wiring harness connector test tool and its testing method is proposed in the present application;

[0032] Figure 8 An internal structure diagram of a clamping mechanism in an electric vehicle wiring harness connector test tool and its testing method is proposed in the present application.

[0033] In the figure: 1, bottom plate; 2, detection box; 3, cushion block; 4, vibration mechanism; 401, vibration motor; 402, turntable; 403, connecting column; 404, stop block; 405, connecting rod; 5, mounting seat; 6, fixed plate; 7, telescopic rod; 8, spring; 9, sliding block; 10, sliding groove; 11, refrigeration device; 12, heating assembly; 1201, shell; 1202, fan; 1203, heating device; 1204, heating wire; 1205, filter plate; 1206, strip-shaped hole; 13, temperature monitoring module; 14, longitudinal movement mechanism; 1401, first shell; 1402, moving motor; 1403, support plate; 1404, first threaded rod; 1405, first threaded sleeve; 1406, first limiting block; 1407, first limiting groove; 15, electric push rod; 16, transverse movement mechanism; 1601, mounting frame; 1602, electric sliding rail; 1603, sliding seat; 1604, fixed block; 1605, pointer; 1606, scale flower print; 17, clamping mechanism; 1701, second shell; 1702, double-shaft motor; 1703, second threaded rod; 1704, second threaded sleeve; 1705, second limiting block; 1706, second limiting groove; 1707, clamping plate; 1708, rubber pad; 18, detection plate; 19, sealing door; 20, support leg; 21, control panel. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] Embodiments, refer to Figures 1-8The utility model provides a kind of electric vehicle wire harness connector test tool and its testing method, including bottom plate 1 and detection box 2, wherein bottom plate 1 is as tool base support component, carries detection box 2, cushion block 3, fixed plate 6 and all upper structure, provides stable installation platform for entire tool, detection box 2 is arranged on the upper surface of bottom plate 1, and detection box 2 is the core space of wire harness connector test, for placing wire harness connector to be tested and relevant detection components, while providing closed environment for temperature control test condition, the upper surface of bottom plate 1 is equipped with cushion block 3 and fixed plate 6, the upper surface of cushion block 3 is provided with vibration mechanism 4, vibration mechanism 4 includes vibration motor 401 installed on the upper surface of cushion block 3, the output end of vibration motor 401 is connected with turntable 402, the outer surface of turntable 402 is equipped with connecting column 403, the end of connecting column 403 away from turntable 402 is connected with stop block 404, the outer surface of stop block 404 is connected with connecting rod 405, the outer surface of fixed plate 6 is connected with telescopic rod 7, telescopic rod 7 is equipped with spring 8 on the outer surface, and the telescopic end of telescopic rod 7 is connected with the outer surface of detection box 2, the outer surface of detection box 2 is connected with mounting seat 5, the end of connecting rod 405 away from connecting column 403 is rotatably connected in the inside of mounting frame 1601, the bottom surface of detection box 2 is connected with sliding block 9, and the inside of bottom plate 1 is equipped with sliding slot 10 matched with sliding block 9.

[0036] Further;Detection box 2 is equipped with refrigeration device 11, heating assembly 12, temperature monitoring module 13 and transverse movement mechanism 16 in the inside, wherein refrigeration device 11 adopts prior art, can quickly reduce the temperature in detection box 2, and the low temperature condition of electric vehicle when driving in cold region is reproduced, provides low temperature test condition for the thermal expansion and cold shrinkage of test wire harness connector in low temperature environment, the change of insulating layer toughness and connection stability, and temperature monitoring module 13 real-time acquisition temperature data in detection box 2, and data is fed back to external control panel 21, heating assembly 12 includes shell 1201 installed in the inside of detection box 2, fan 1202 and heating device 1203 are installed in the inside of shell 1201, the outer surface of heating device 1203 is connected with electric heating wire 1204, filter plate 1205 is installed on the upper surface of shell 1201, and strip hole 1206 is set up on the bottom surface of shell 1201.

[0037] Further, the transverse moving mechanism 16 comprises a first shell 1401 installed inside the detection box 2, a moving motor 1402 and a supporting plate 1403 are installed inside the first shell 1401, wherein the moving motor 1402 serves as the power source for transverse movement, the output end of the moving motor 1402 is connected with a first threaded rod 1404 after penetrating through the supporting plate 1403, the supporting plate 1403 supports and limits the output end of the moving motor 1402 and one end of the first threaded rod 1404, preventing the first threaded rod 1404 from deviating or shaking during rotation, ensuring stable threaded transmission, the other end of the first threaded rod 1404 away from the moving motor 1402 is rotationally connected inside the first shell 1401, a first threaded sleeve 1405 is threadedly connected to the outer surface of the first threaded rod 1404, a first limiting block 1406 is connected to the outer surface of the first threaded sleeve 1405, a first limiting groove 1407 is formed on the upper surface of the shell, and an electric push rod 15 is installed at the end of the first limiting block 1406 away from the first threaded sleeve 1405 after penetrating through the first limiting groove 1407, and the output end of the electric push rod 15 is connected with the longitudinal moving mechanism 14.

[0038] Further, the longitudinal moving mechanism 14 comprises a mounting bracket 1601 installed at the output end of the electric push rod 15, an electric slide rail 1602 is installed inside the mounting bracket 1601, a sliding seat 1603 is slidingly connected to the outer surface of the electric slide rail 1602, a fixed block 1604 and a pointer 1605 are connected to the outer surface of the sliding seat 1603, a scale pattern 1606 matched with the pointer 1605 is formed on the upper surface of the mounting bracket 1601, wherein the pointer 1605 and the scale pattern 1606 cooperate to indicate the longitudinal moving distance of the sliding seat 1603 in real time, facilitating the adjustment of the position for different types of plug-in tests, and the outer surface of the fixed block 1604 is connected with the clamping mechanism 17, and the clamping mechanism 17 comprises a second shell 1701 installed on the outer surface of the fixed block 1604.

[0039] Further, the inside of the second shell 1701 is provided with a double-shaft motor 1702, wherein the double-shaft motor 1702 serves as a power source of the clamping action, two output ends of the double-shaft motor 1702 are connected with second threaded rods 1703, one end of each second threaded rod 1703 away from the double-shaft motor 1702 is rotationally connected to the inside of the second shell 1701, the outer surface of each second threaded rod 1703 is threadedly connected with a second threaded sleeve 1704, the outer surface of each second threaded sleeve 1704 is connected with a second limiting block 1705, the upper surface of the second shell 1701 is provided with two second limiting grooves 1706, one side of each second limiting block 1705 away from the second threaded sleeve 1704 is connected to the clamping plate 1707 after penetrating through the second limiting groove 1706, the side of each clamping plate 1707 away from the other clamping plate 1707 is connected with a rubber pad 1708, wherein the rubber pad 1708 is attached to the side of the clamping plate 1707 away from the other clamping plate 1707, on the one hand, the elasticity of the rubber material increases the friction with the wire harness connector, thereby improving the clamping stability and preventing the connector from falling off; on the other hand, the rubber pad 1708 can buffer the clamping force, thereby preventing the hard clamping plate 1707 from directly contacting the wire harness and causing the wire harness insulation layer to wear or the connector to deform, and the rubber pad 1708 can protect the wire harness connector and reduce the test damage.

[0040] Further, the inside of the second shell 1701 is provided with a double-shaft motor 1702, wherein the double-shaft motor 1702 serves as a power source of the clamping action, two output ends of the double-shaft motor 1702 are connected with second threaded rods 1703, one end of each second threaded rod 1703 away from the double-shaft motor 1702 is rotationally connected to the inside of the second shell 1701, the outer surface of each second threaded rod 1703 is threadedly connected with a second threaded sleeve 1704, the outer surface of each second threaded sleeve 1704 is connected with a second limiting block 1705, the upper surface of the second shell 1701 is provided with two second limiting grooves 1706, one side of each second limiting block 1705 away from the second threaded sleeve 1704 is connected to the clamping plate 1707 after penetrating through the second limiting groove 1706, the side of each clamping plate 1707 away from the other clamping plate 1707 is connected with a rubber pad 1708, wherein the rubber pad 1708 is attached to the side of the clamping plate 1707 away from the other clamping plate 1707, on the one hand, the elasticity of the rubber material increases the friction with the wire harness connector, thereby improving the clamping stability and preventing the connector from falling off; on the other hand, the rubber pad 1708 can buffer the clamping force, thereby preventing the hard clamping plate 1707 from directly contacting the wire harness and causing the wire harness insulation layer to wear or the connector to deform, and the rubber pad 1708 can protect the wire harness connector and reduce the test damage.

[0041] A kind of electric vehicle wire harness connector test tool and its testing method, including the following steps:

[0042] Step one: start the vibration motor 401 of vibration mechanism 4 by control panel 21, the vibration motor 401 output end drives rotary table 402 rotation, the connecting column 403 of rotary table 402 outer surface does circular motion with rotary table 402, in turn pulls connecting rod 405, the other end rotationally connects in the mounting frame 1601 of detection box 2 outer surface mounting seat 5, therefore the circular motion of connecting column 403 can be converted into the reciprocating push-pull action of connecting rod 405 to detection box 2, simulates the jolt vibration in the vehicle driving.

[0043] Step two: the telescopic rod 7 on fixed plate 6 is synchronous with the movement of detection box 2 Stretching, the spring 8 on its outer surface is compressed or stretched, on the one hand, the elastic buffer of spring 8 absorbs the impact force when detection box 2 moves, reduces the wear and tear of components, on the other hand, through the guiding effect of telescopic rod 7, further prevent detection box 2 from deviating from the track during vibration, provide reliable environment for the performance test of wire harness connector in detection box 2 inside under vibration condition.

[0044] Step three: start the refrigeration device 11 and heating assembly 12 respectively through the control panel 21, and cooperate with the temperature monitoring module 13 to control the temperature, the refrigeration device 11 is referred to the low-temperature working condition of the electric vehicle driving in the cold region, the heat in the detection box 2 is transferred to the outside through the internal compressor refrigeration cycle, the temperature in the box is rapidly reduced, the low-temperature environment is simulated, and the heating device 1203 in the heating assembly 12 is powered on, the heating wire 1204 rapidly generates heat, at this time, the fan 1202 is synchronously operated, the air flow in the shell 1201 is accelerated, heat is uniformly distributed to each place of the detection box 2, the high-temperature environment is simulated, at the same time, the temperature monitoring module 13 collects the temperature data in the detection box 2 at any time, and feeds back to the external control panel 21 in real time, once the temperature deviates from the preset value, the control panel 21 adjusts the refrigeration power of the refrigeration device 11 or the heating power of the heating assembly 12 according to the feedback, ensures that the temperature is stable during the whole test, and guarantees the accuracy of the test result.

[0045] The working principle of the present application is as follows: first, the vibration parameters, temperature parameters and movement test path are set through the control panel 21, in the environmental simulation link, the temperature control system starts first, if high temperature is simulated, the heating device 1203 of the heating assembly 12 drives the heating wire 1204 to heat, the fan 1202 diffuses heat to the detection box 2 through the filter plate 1205 on the shell 1201, if low temperature is simulated, the refrigeration device 11 is started, the temperature monitoring module 13 collects temperature data in real time and feeds back to the control panel 21, so that the temperature is stably ensured in the preset range, at the same time, the vibration mechanism 4 starts to work, the vibration motor 401 on the cushion block 3 drives the rotating disc 402 to rotate, the connecting column 403 on the outer surface of the rotating disc 402 drives the connecting rod 405 to reciprocatingly push and pull the mounting seat 5 on the outer surface of the detection box 2, so that the detection box 2 moves along the sliding groove 10 of the bottom plate 1 through the bottom sliding block 9 to do reciprocating linear motion, the telescopic rod 7 on the fixed plate 6 and the spring 8 play a buffering and guiding role, so that the detection box 2 is prevented from deviating, the alternating stress borne by the wire harness connector when the vehicle is jolted is simulated, in addition, in the plug-in test, the clamping mechanism 17 is started, the double-shaft motor 1702 in the second shell 1701 drives two second threaded rods 1703 to synchronously rotate, drives the second threaded sleeve 1704 and the second limiting block 1705 to slide along the second limiting groove 1706, so that the two clamping plates 1707 clamp the wire harness connector through the rubber pad 1708, then the plug-in frequency, stroke and other parameters are set through the control panel 21 on the bottom plate 1, the transverse moving mechanism 16 is activated, the clamping mechanism 17 is driven to align the detection plate 18 for testing, by adjusting the position of the electric push rod 15 and the longitudinal moving mechanism 14, different wire harness connectors can be tested according to the needs, the control panel 21 collects displacement data and electrical signals fed back by the detection plate 18 in real time, judges the plug-in stability, after the test is completed, the mechanism is closed, the sealing door 19 is opened, the wire harness is taken out, and the plug-in test is completed.

[0046] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A testing fixture for electric vehicle wiring harness connectors, comprising a base plate (1) and a testing box (2), characterized in that, The detection box (2) is set on the upper surface of the base plate (1). The upper surface of the base plate (1) is equipped with a pad (3) and a fixing plate (6). The upper surface of the pad (3) is provided with a vibration mechanism (4). The vibration mechanism (4) includes a vibration motor (401) installed on the upper surface of the pad (3). The output end of the vibration motor (401) is connected to a turntable (402). The outer surface of the turntable (402) is equipped with a connecting column (403). The end of the connecting column (403) away from the turntable (402) is connected to a stop block (404). The outer surface of the stop block (404) is connected to a connecting rod (405). The outer surface of the fixing plate (6) is connected to a telescopic rod (7). The outer surface of the telescopic rod (7) is fitted with a spring (8). The telescopic end of the telescopic rod (7) is connected to the outer surface of the detection box (2).

2. The electric vehicle wiring harness connector testing fixture according to claim 1, characterized in that, The outer surface of the detection box (2) is connected to the mounting base (5), and the end of the connecting rod (405) away from the connecting column (403) is rotatably connected to the inside of the mounting frame (1601). The bottom surface of the detection box (2) is connected to the slider (9), and the inside of the base plate (1) is provided with a sliding groove (10) that matches the slider (9). The inside of the test box (2) is equipped with a cooling device (11), a heating component (12), a temperature monitoring module (13) and a lateral movement mechanism (16). The heating component (12) includes a housing (1201) installed inside the test box (2).

3. The electric vehicle wiring harness connector testing fixture according to claim 2, characterized in that, A fan (1202) and a heating device (1203) are installed inside the housing (1201). An electric heating wire (1204) is connected to the outer surface of the heating device (1203). A filter plate (1205) is installed on the upper surface of the housing (1201). A strip-shaped hole (1206) is opened on the bottom surface of the housing (1201).

4. The electric vehicle wiring harness connector testing fixture according to claim 2, characterized in that, The lateral movement mechanism (16) includes a first outer shell (1401) inside the detection box (2). A moving motor (1402) and a support plate (1403) are installed inside the first outer shell (1401). The output end of the moving motor (1402) passes through the support plate (1403) and is connected to a first threaded rod (1404). The end of the first threaded rod (1404) away from the moving motor (1402) is rotatably connected inside the first outer shell (1401).

5. The electric vehicle wiring harness connector testing fixture according to claim 4, characterized in that, The outer surface of the first threaded rod (1404) is threaded with a first threaded sleeve (1405), the outer surface of the first threaded sleeve (1405) is connected with a first limiting block (1406), the upper surface of the outer shell is provided with a first limiting groove (1407), the end of the first limiting block (1406) away from the first threaded sleeve (1405) passes through the first limiting groove (1407) and is equipped with an electric push rod (15), the output end of the electric push rod (15) is connected with a longitudinal moving mechanism (14).

6. The electric vehicle wiring harness connector testing fixture according to claim 5, characterized in that, The longitudinal moving mechanism (14) includes a mounting bracket (1601) installed at the output end of the electric push rod (15). An electric slide rail (1602) is installed inside the mounting bracket (1601), and a sliding seat (1603) is slidably connected to the outer surface of the electric slide rail (1602).

7. The electric vehicle wiring harness connector testing fixture according to claim 6, characterized in that, The outer surface of the sliding seat (1603) is connected to a fixing block (1604) and a pointer (1605). The upper surface of the mounting bracket (1601) is provided with a scale pattern (1606) that matches the pointer (1605). The outer surface of the fixing block (1604) is connected to a clamping mechanism (17). The clamping mechanism (17) includes a second outer shell (1701) on which the outer surface of the fixing block (1604) is mounted.

8. The electric vehicle wiring harness connector testing fixture according to claim 7, characterized in that, A dual-axis motor (1702) is installed inside the second housing (1701). Both output ends of the dual-axis motor (1702) are connected to a second threaded rod (1703). The end of each second threaded rod (1703) away from the dual-axis motor (1702) is rotatably connected to the inside of the second housing (1701). A second threaded sleeve (1704) is threadedly connected to the outer surface of each second threaded rod (1703). Each of the second threaded sleeves (1704) has a second limiting block (1705) connected to its outer surface. The upper surface of the second outer shell (1701) has two second limiting grooves (1706). Each of the second limiting blocks (1705) has a side away from the second threaded sleeve (1704) that passes through the second limiting groove (1706) and is connected to the clamping plate (1707). The two clamping plates (1707) have rubber pads (1708) connected to their sides that are close to each other.

9. The electric vehicle wiring harness connector testing fixture according to claim 1, characterized in that, The inside of the testing box (2) is equipped with a testing plate (18), and a sealing door (19) is hinged to the front of the testing box (2). Four support legs (20) are connected to the bottom surface of the base plate (1), and a control panel (21) is installed on the upper surface of the base plate (1).

10. A testing fixture and testing method for electric vehicle wiring harness connectors, based on the testing fixture for electric vehicle wiring harness connectors according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Start the vibration motor (401) of the vibration mechanism (4) through the control panel (21). The output end of the vibration motor (401) drives the turntable (402) to rotate. The connecting column (403) on the outer surface of the turntable (402) moves in a circular motion with the turntable (402), thereby pulling the connecting rod (405). The other end is rotatably connected to the mounting bracket (1601) of the mounting seat (5) on the outer surface of the test box (2). Therefore, the circular motion of the connecting column (403) can be converted into the reciprocating pushing and pulling action of the connecting rod (405) on the test box (2), simulating the bumpy vibration of the vehicle during driving. Step 2: The telescopic rod (7) on the fixed plate (6) extends and retracts synchronously with the movement of the test box (2). The spring (8) on its outer surface is compressed or stretched. On the one hand, the elastic buffer of the spring (8) absorbs the impact force when the test box (2) moves, reducing component wear. On the other hand, the guiding effect of the telescopic rod (7) further prevents the test box (2) from deviating from the trajectory during vibration, providing a reliable environment for the performance testing of the wire harness connector inside the test box (2) under vibration conditions. Step 3: Start the cooling device (11) and heating component (12) respectively through the control panel (21) and then monitor the temperature with the temperature monitoring module (13). The cooling device (11) uses the low temperature conditions of electric vehicles driving in cold regions as a reference. Through the internal compressor cooling cycle, it transfers the heat in the test box (2) to the outside, quickly reduces the temperature inside the box, and simulates a low temperature environment. The heating device (1203) inside the heating component (12) supplies power to the heating wire (1204). The heating wire (1204) heats up quickly. At this time, the fan (1202) runs synchronously to accelerate the air flow in the shell (1201) so that the heat is evenly distributed to all parts of the test box (2) to simulate a high temperature environment. At the same time, the temperature monitoring module (13) collects the temperature data inside the test box (2) at all times and feeds it back to the external control panel (21) in real time. Once the temperature deviates from the preset value, the control panel (21) immediately adjusts the cooling power of the cooling device (11) or the heating power of the heating component (12) according to the feedback to ensure the temperature is stable throughout the test and ensure the accuracy of the test results.

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