An automatic testing fixture for vehicle headlight current and voltage

Abstract

This invention discloses an automatic testing fixture for vehicle lamp current and voltage, relating to the technical field of vehicle lamp current testing equipment. It includes a main body, a drive assembly disposed outside the main body, and a placement fixture disposed in front of the drive assembly. The invention is characterized by further including a probe mechanism disposed at the output end of the drive assembly and an adaptive adjustment mechanism disposed outside the probe mechanism. The probe mechanism and the adaptive adjustment mechanism allow for adaptive adjustment of the probe shell's hardness and flexible deformation, thus enabling compatibility with different structural forms of vehicle lamp electrical connectors. This solves the problem of existing testing equipment using rigid linear probes with a single, fixed motion trajectory, which cannot adapt to irregularly shaped connectors with tilt angles or internal bends. It improves the device's adaptability and versatility to different vehicle lamp connectors and avoids wear and damage to the probe-connector contact area caused by rigid insertion, ensuring the reliability and stability of the testing operation.

Description

Technical Field

[0001] This invention relates to the technical field of vehicle lamp current testing equipment, specifically to an automatic testing fixture for vehicle lamp current and voltage. Background Technology

[0002] The automatic testing fixture for vehicle headlight current and voltage is a specialized device for factory testing and performance verification of integrated vehicle headlight assemblies with a front-end housing. Its core workflow is as follows: the integrated headlight assembly is precisely placed and locked into the pre-set fixture position on the equipment to ensure secure positioning without any offset or loosening; then, the equipment activates the cylinder and other drive components, which provide stable and controllable driving force to connect the probes to the electrical connectors of the headlights and transmit test signals through the probes, thereby completing the testing of key performance parameters such as the electrical continuity and signal transmission stability of the headlights.

[0003] When inspecting the combined headlight assembly with integrated front cover, the headlight and the front cover together need to be positioned and clamped in the tooling station. Due to the differences in the overall shape and layout of the headlight, the shell structure design and injection molding process, the electrical connector structure of the headlight varies. Some are conventional standard straight-through interfaces, some have an overall tilt angle, and some have irregular structures with a relatively straight entrance section and a bent internal cavity.

[0004] Existing testing equipment mostly uses linear probes with a cylinder-driven linear feed mode. The probe can only perform rigid linear reciprocating motion, and the motion trajectory is single and fixed. For inclined sockets and irregular sockets with straight inlets and internal bends, it cannot adapt to changes in interface angle and internal orientation, and cannot achieve automatic and smooth alignment and accurate insertion throughout the process. Problems such as insertion deviation, jamming, and incomplete insertion are prone to occur. Often, manual adjustment of alignment and manual insertion and removal are required to complete the test, resulting in a low degree of automation.

[0005] Meanwhile, traditional testing equipment is usually equipped with only a single testing probe, which can only perform connection testing on each car light socket one by one. The whole machine testing process is cumbersome and the operation process is lengthy. Under the condition of mass production, the testing efficiency is low and it is difficult to meet the production needs of large-scale and rapid quality inspection on the assembly line.

[0006] To address the aforementioned issues, there is an urgent need for innovative design based on the existing automatic testing fixtures for vehicle headlight current and voltage. Summary of the Invention

[0007] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide an automatic testing fixture for vehicle headlight current and voltage, thereby solving the problems mentioned in the background art regarding the insufficient adaptability of vehicle headlight testing equipment to irregularly shaped electrical connectors with tilt angles and internal bends, the continued reliance on manual assistance to complete the testing operation, and the low overall testing efficiency caused by the single-probe sequential testing method.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automatic testing fixture for vehicle lamp current and voltage, comprising a body, a drive assembly disposed outside the body, and a placement fixture disposed in front of the drive assembly, characterized in that it further comprises: A probe mechanism located at the output end of the driving component; An adaptive adjustment mechanism located outside the probe mechanism; The probe mechanism includes a pressure plate disposed at the output end of the drive assembly. A connecting cylinder is disposed at the bottom of the outer wall of the pressure plate. A probe housing is disposed at the bottom of the connecting cylinder. A piston chamber is disposed at one end of the probe housing. A piston is disposed at one end of the connecting cylinder. When the probe shell is inserted into the detection port, it can undergo adaptive deformation movement according to the angle inside the detection port; A rigid connecting pipe is provided on one side of the piston chamber, a valve is provided on the inner wall of the rigid connecting pipe, a ball is movably provided on the top of the valve, and a return pipe is provided on the inner wall of the valve.

[0009] Preferably, one end of the connecting cylinder is connected to a telescopic rod. A return spring is provided around the outer wall of the No. 1 telescopic rod. One end of the first telescopic rod is connected to one end of the probe housing.

[0010] Preferably, one end of the rigid connecting pipe is connected to a corrugated pipe; The outer wall of the top ball is connected to a second telescopic rod; The outer wall of the second telescopic rod is surrounded by a compression spring. One end of the second telescopic rod is connected to a connecting plate.

[0011] Preferably, a top block is movably provided on the inner wall of the return pipe; A one-way spring is connected to the bottom of the top block.

[0012] Preferably, the inner wall of the probe housing is provided with gas; The probe shell is made of polyether-type ATPU.

[0013] Preferably, one end of the piston is movably disposed on the inner wall of the piston chamber; The other end of the piston is connected to one end of the connecting cylinder.

[0014] Preferably, the connecting cylinder is hollow; The first telescopic rod is hollow; The connecting cylinder and the first telescopic rod are interconnected through a rigid connecting pipe and a corrugated pipe.

[0015] Preferably, the connecting plate has ventilation openings; The connecting plate is aligned with the inner wall of the valve.

[0016] Preferably, the outer wall of the top block is inclined; One end of the top block is disposed on the inner wall of the return pipe.

[0017] Preferably, the inner wall of the valve is inclined; The ball is attached to the inner wall of the valve.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. The probe mechanism and adaptive adjustment mechanism enable the probe housing's hardness to be adaptively adjusted and its flexible deformation to adapt, thus making it compatible with different structural forms of automotive lamp electrical connectors. This solves the problem of existing testing equipment using rigid linear probes with a single, fixed motion trajectory, which cannot adapt to irregularly shaped connectors with tilt angles and internal bends, easily leading to misalignment, jamming, and incomplete insertion, requiring manual assistance for alignment testing. As the connecting cylinder continues to advance with the drive assembly, the first telescopic rod and the return spring synchronously retract and buffer, driving the piston to smoothly press down along the inner wall of the piston chamber. The gas inside the probe housing is forced out through the valve, causing the probe housing to undergo moderate flexible deformation due to the reduction in internal air pressure. It automatically follows the bending direction inside the connector to complete the entire precise insertion process without manual intervention to adjust the alignment. This improves the device's adaptability and versatility to different automotive lamp connectors, and avoids wear and damage to the contact area between the probe and the connector caused by rigid insertion, ensuring the reliability and stability of the testing operation.

[0019] 2. The probe mechanism and adaptive adjustment mechanism improve the efficiency of vehicle headlight electrical performance testing, enhancing testing efficiency in mass production. This solves the problems of traditional testing equipment requiring manual insertion and removal operations and single-probe sequential testing, which leads to cumbersome processes and lengthy workflows, making it difficult to meet the needs of rapid quality inspection in large-scale production lines. After the headlight assembly integrated with the vehicle front shell is fixed in the placement fixture, the device can automatically complete the entire process of probe feeding, adaptive hardness adjustment, precise connector insertion, test signal transmission, and probe reset, without the need for manual alignment and insertion / removal, effectively shortening the single-station testing cycle. At the same time, multiple probe mechanisms and adaptive adjustment mechanisms are configured to achieve simultaneous testing of multiple electrical connectors, further reducing the overall testing time. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the driving component, probe mechanism and adaptive adjustment mechanism of the present invention.

[0022] Figure 3 This is a bottom view of the structure of the driving component, probe mechanism, and adaptive adjustment mechanism of the present invention.

[0023] Figure 4 This is a partially enlarged schematic diagram of the probe mechanism of the present invention.

[0024] Figure 5 This is an enlarged front view of a portion of the probe mechanism of the present invention; Figure 6 This is a cross-sectional view of the probe mechanism and adaptive adjustment mechanism of the present invention; Figure 7 This is a schematic diagram illustrating the motion principle of the probe mechanism and the adaptive adjustment mechanism of the present invention. Figure 8 This is a schematic diagram of the structure of the valve, top ball, and connecting plate of the present invention; Figure 9 This is a schematic diagram of the structure of the valve, top ball, and connecting plate of the present invention; Figure 10 This is a cross-sectional view of the internal structure of the valve, top ball, and connecting plate of the present invention; Figure 11 This is a front view of the internal structure of the valve, top ball, and connecting plate of the present invention; Figure 12 This is a schematic diagram of the external structure of the connecting cylinder and probe housing of the present invention; Figure 13 This is a bottom view of the external structure of the connecting cylinder and probe housing of the present invention.

[0025] In the diagram: 1. Body; 2. Drive assembly; 3. Probe mechanism; 301. Pressure plate; 302. Connecting cylinder; 303. No. 1 telescopic rod; 304. Return spring; 305. Probe housing; 306. Piston chamber; 307. Piston; 4. Adaptive adjustment mechanism; 401. Rigid connecting pipe; 402. Bellows; 403. Valve; 404. Top ball; 405. No. 2 telescopic rod; 406. Compression spring; 407. Connecting plate; 408. Return pipe; 409. Top block; 410. One-way spring; 5. Fixture placement. Detailed Implementation

[0026] The technical solutions of 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.

[0027] Please see Figures 1 to 13 The present invention provides a technical solution: an automatic testing fixture for vehicle headlight current and voltage, comprising a body 1, a drive assembly 2 disposed outside the body 1, and a placement fixture 5 disposed in front of the drive assembly 2, characterized in that it further comprises: The probe mechanism 3 is located at the output end of the drive component 2; An adaptive adjustment mechanism 4 is located outside the probe mechanism 3; The probe mechanism 3 includes a pressure plate 301 disposed at the output end of the drive assembly 2. A connecting cylinder 302 is disposed at the bottom of the outer wall of the pressure plate 301. A probe housing 305 is disposed at the bottom of the connecting cylinder 302. A piston chamber 306 is disposed at one end of the probe housing 305. A piston 307 is disposed at one end of the connecting cylinder 302. When the probe housing 305 is inserted into the detection port, it can undergo adaptive deformation movement according to the angle inside the detection port; A rigid connecting pipe 401 is provided on one side of the piston chamber 306. A valve 403 is provided on the inner wall of the rigid connecting pipe 401. A top ball 404 is movably provided on the top of the valve 403. A return pipe 408 is provided on the inner wall of the valve 403.

[0028] In this embodiment, the probe mechanism 3 and the adaptive adjustment mechanism 4 enable the hardness of the probe housing 305 to be adaptively adjusted and its flexible deformation to adapt to different structural forms of automotive lamp electrical connectors. This solves the problem that existing testing equipment uses rigid linear probes with a single and fixed motion trajectory, which cannot adapt to irregularly shaped connectors with tilt angles and internal bends, easily leading to misalignment, jamming, and incomplete insertion, requiring manual assistance for alignment testing. When the connecting cylinder 302 continues to advance with the drive assembly 2, the first telescopic rod 303 and the return spring 304 synchronously retract and buffer, driving the piston 307 to smoothly press down along the inner wall of the piston chamber 306. The gas inside the probe housing 305 is compressed and discharged through the valve 403, causing the probe housing 305 to undergo moderate flexible deformation due to the reduction in internal air pressure. It automatically follows the bending direction inside the connector to complete the entire process of precise insertion without manual intervention to adjust the alignment. This not only improves the adaptability and universality of the device to different automotive lamp connectors, but also avoids wear and damage to the contact parts between the probe and the connector caused by rigid insertion, ensuring the reliability and stability of the testing operation.

[0029] One end of the connecting cylinder 302 is connected to a telescopic rod 303; A return spring 304 is provided around the outer wall of the first telescopic rod 303; One end of the telescopic rod 303 is connected to one end of the probe housing 305.

[0030] In this embodiment, the probe mechanism 3 and the adaptive adjustment mechanism 4 improve the efficiency of vehicle headlight electrical performance testing, thereby increasing testing efficiency under mass production conditions. This solves the problems of traditional testing equipment requiring manual assistance in insertion and removal operations and single-probe sequential testing, which leads to cumbersome processes and lengthy workflows, making it difficult to meet the needs of rapid quality inspection in large batches on assembly lines. After the vehicle headlight assembly integrated with the vehicle head shell is fixed as a whole on the placement fixture 5, the device can automatically complete the entire process of probe feeding, adaptive hardness adjustment, precise insertion of connectors, transmission of test signals, and probe reset, without the need for manual intervention in alignment and insertion / removal, effectively shortening the single-station testing cycle. At the same time, multiple sets of probe mechanisms 3 and adaptive adjustment mechanisms 4 are configured to achieve simultaneous testing of multiple electrical connectors, further reducing the overall testing time.

[0031] One end of the rigid connecting pipe 401 is connected to a corrugated pipe 402; The outer wall of the top ball 404 is connected to the second telescopic rod 405; A compression spring 406 is provided around the outer wall of the No. 2 telescopic rod 405; One end of the second telescopic pole 405 is connected to a connecting plate 407.

[0032] In this embodiment, when the driving component 2 drives the probe housing 305 to insert into the socket, in the initial stage, that is, when the probe housing 305 is just inserted into the socket, since the socket is a straight line, the probe housing 305 will be inserted along the straight line. When entering the curved stage, the other end of the probe housing 305 will first contact the curved stage. At this time, the probe housing 305 will generate pressure due to the continuous advancement of the driving component 2. At this time, the probe housing 305 is in a temporary stop stage, while the connecting cylinder 302 continues to press down due to the advancement of the driving component 2. When the connecting cylinder 302 presses down, it will drive the first telescopic rod 303 and the return spring 304 to retract.

[0033] A top block 409 is movably provided on the inner wall of the return pipe 408; A one-way spring 410 is connected to the bottom of the top block 409.

[0034] In this embodiment, the piston 307 also presses downward along the inner wall of the piston chamber 306. Since the probe housing 305 and the inner wall of the piston chamber 306 are filled with gas at this time, the piston 307 will compress the gas when it presses downward along the inner wall of the piston chamber 306. At this time, the gas inside the probe housing 305 will be discharged into the bellows 402 through the valve 403. When the gas impacts the inside of the valve 403, the air pressure will lift the top ball 404. When the top ball 404 is lifted, the second telescopic rod 405 and the compression spring 406 will contract to generate elastic force. At the same time, the gas will be discharged into the bellows 402 after being lifted by the top ball 404.

[0035] Gas is provided on the inner wall of the probe housing 305; The probe housing 305 is made of polyether-type 90ATPU.

[0036] In this embodiment, the second top ball 404 is then continuously impacted and discharged into the connecting cylinder 302 through the bellows 402. Because there is less gas inside the probe housing 305, the probe housing 305 can undergo slight deformation due to the material of the probe housing 305. The continuous downward pressure of the drive component 2 causes one end of the probe housing 305 to be inserted into the detection point inside the socket, so that the inside of the socket can be detected. After the detection is completed, the drive component 2 drives the probe mechanism 3 and the adaptive adjustment mechanism 4 to rise.

[0037] One end of piston 307 is movably disposed on the inner wall of piston chamber 306; The other end of piston 307 is connected to one end of connecting cylinder 302.

[0038] In this embodiment, when the probe housing 305 rises to the straight stage of the socket, the probe housing 305, without the downward pressure and the pressure of the inner wall of the socket, will cause the first telescopic rod 303 and the return spring 304 to reset. Simultaneously, the connecting cylinder 302 will also reset. When the connecting cylinder 302 resets, it will drive the piston 307 to reset. When the piston 307 resets, a negative pressure state will be formed. Through the negative pressure state, the gas on the inner wall of the connecting cylinder 302 will flow back to the bellows 402 through the rigid connecting pipe 401. During the gas recirculation process, it will be discharged into the return pipe 408. The top block 409 set inside the return pipe 408 will be slightly moved downward by the gas impact due to its shape.

[0039] Connecting cylinder 302 is hollow; Telescopic pole No. 1, 303, is hollow; The connecting cylinder 302 and the first telescopic rod 303 are interconnected through the rigid connecting pipe 401 and the corrugated pipe 402.

[0040] In this embodiment, when the connecting cylinder 302 resets, it drives the piston 307 to reset. When the piston 307 resets, a negative pressure state is formed. Through the negative pressure state, the gas on the inner wall of the connecting cylinder 302 flows back to the bellows 402 through the rigid connecting pipe 401. During the gas backflow process, it is discharged into the return pipe 408. The top block 409 set inside the return pipe 408 will be slightly moved downward by the gas impact due to its shape. At this time, the one-way spring 410 will contract to generate elastic force. The gas will be discharged through the return pipe 408 into the return pipe 408 in the bottom valve 403, and finally discharged into the inner wall of the probe housing 305. After the gas on the inner wall of the connecting cylinder 302 is emptied, the one-way spring 410 will drive the top block 409 to reset.

[0041] The connecting plate 407 has ventilation openings; The inner wall of the connecting plate 407 is aligned with that of the valve 403.

[0042] In this embodiment, the connecting cylinder 302 continues to press down due to the advancement of the drive assembly 2. When the connecting cylinder 302 presses down, it will cause the first telescopic rod 303 and the return spring 304 to retract. At the same time, the piston 307 will also press down along the inner wall of the piston chamber 306. Since the probe housing 305 and the inner wall of the piston chamber 306 are filled with gas at this time, the piston 307 will compress the gas when it presses down along the inner wall of the piston chamber 306. At this time, the gas inside the probe housing 305 will be discharged into the bellows 402 through the valve 403. When the gas impacts the inside of the valve 403, the air pressure will lift the top ball 404. When the top ball 404 is lifted, the second telescopic rod 405 and the compression spring 406 will retract to generate elastic force. At the same time, the gas will be discharged into the bellows 402 after being lifted by the top ball 404. Then, it will continue to impact the second top ball 404 and be discharged into the connecting cylinder 302 through the bellows 402.

[0043] The outer wall of the top block 409 is inclined; One end of the top block 409 is located on the inner wall of the return pipe 408.

[0044] In this embodiment, since the inner walls of the probe housing 305 and the piston chamber 306 are filled with gas, when the piston 307 presses down along the inner wall of the piston chamber 306, it will compress the gas. At this time, the gas inside the probe housing 305 will be discharged into the bellows 402 through the valve 403. When the gas impacts the inside of the valve 403, the air pressure will lift the top ball 404. When the top ball 404 is lifted, the second telescopic rod 405 and the compression spring 406 will contract to generate elastic force. At the same time, the gas will be discharged into the bellows 402 after being lifted by the top ball 404. Then, it will continue to impact the second top ball 404 and be discharged into the connecting cylinder 302 through the bellows 402. Because there is less gas inside the probe housing 305, the probe housing 305 can undergo slight deformation due to the material of the probe housing 305.

[0045] The inner wall of valve 403 is inclined; The ball 404 is movable and snapped onto the inner wall of valve 403.

[0046] In this embodiment, after the detection is completed, the drive component 2 drives the probe mechanism 3 and the adaptive adjustment mechanism 4 to rise. When the probe housing 305 rises to the straight stage of the socket, the probe housing 305 will reset due to the absence of downward pressure and the pressure of the inner wall of the socket. The first telescopic rod 303 and the reset spring 304 will also reset synchronously. When the connecting cylinder 302 resets, it will drive the piston 307 to reset. When the piston 307 resets, a negative pressure state will be formed. Through the negative pressure state, the gas on the inner wall of the connecting cylinder 302 will flow back to the bellows 402 through the rigid connecting pipe 401. During the gas recirculation process, it will be discharged into the return pipe 408. The top block 409 set inside the return pipe 408 will be slightly moved downward by the gas impact due to its shape. At this time, the one-way spring 410 will contract to generate elastic force.

[0047] Working principle: When using this automatic testing fixture for vehicle headlight current and voltage, first place the light on the placement fixture 5, fix the light and the front part of the vehicle, and then start the drive component 2. The drive component 2 drives the probe mechanism 3 and the adaptive adjustment mechanism 4 to insert into the socket for testing. However, when testing the socket, due to the difference in process design and some vehicle headlight models, there are some curved sections on the inner wall of the socket. This makes it impossible for the probe to be fully inserted in some sections, requiring manual testing.

[0048] When the driving component 2 drives the probe housing 305 to insert into the socket, in the initial stage, when the probe housing 305 is just inserted into the socket, because the socket is a straight line, the probe housing 305 will insert along the straight line. When entering the curved stage, the other end of the probe housing 305 will first contact the curved stage. At this time, the probe housing 305 will generate pressure due to the continuous advancement of the driving component 2. At this time, the probe housing 305 is in a temporary stop stage, while the connecting cylinder 302 continues to be pressed down due to the advancement of the driving component 2. When the connecting cylinder 302 is pressed down, it will drive the first telescopic rod 303 and the return spring 304 to retract. At the same time, the piston 307 will also be pressed down along the inner wall of the piston chamber 306. Because the probe housing 305 and the inner wall of the piston chamber 306 are filled with gas at this time, the piston 307 will press down along the piston chamber 306. When the inner wall is pressed down, the gas is compressed. At this time, the gas inside the probe housing 305 will be discharged into the bellows 402 through the valve 403. When the gas impacts the inside of the valve 403, the air pressure will lift the top ball 404. When the top ball 404 is lifted, the second telescopic rod 405 and the compression spring 406 will contract to generate elastic force. At the same time, the gas will be discharged into the bellows 402 after being lifted by the top ball 404. Then, it will continue to impact the second top ball 404 and be discharged into the connecting cylinder 302 through the bellows 402. Because there is less gas inside the probe housing 305, the probe housing 305 can be slightly deformed due to the material of the probe housing 305. The continuous downward pressure of the drive component 2 causes one end of the probe housing 305 to be inserted into the detection point inside the socket, so that the inside of the socket can be detected.

[0049] After the test is completed, the drive assembly 2 drives the probe mechanism 3 and the adaptive adjustment mechanism 4 to rise. When the probe housing 305 rises to the straight section of the socket, the probe housing 305, without downward pressure and the pressure from the inner wall of the socket, causes the first telescopic rod 303 and the return spring 304 to return to their original positions. Simultaneously, the connecting cylinder 302 also returns to its original position. When the connecting cylinder 302 returns to its original position, it drives the piston 307 to return to its original position. When the piston 307 returns to its original position, a negative pressure state is created. This negative pressure state allows the gas inside the connecting cylinder 302 to escape through the rigid connecting pipe 4. 01 The gas flows back to the bellows 402. During the gas reflux process, it is discharged into the return pipe 408. The top block 409 inside the return pipe 408 will be slightly moved downward by the gas impact due to its shape. At this time, the one-way spring 410 will contract to generate elastic force. The gas will be discharged through the return pipe 408 into the return pipe 408 in the bottom valve 403, and finally discharged into the inner wall of the probe housing 305. After the gas in the inner wall of the connecting cylinder 302 is emptied, the one-way spring 410 will drive the top block 409 to reset. At this point, the work of the present invention is completed.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic testing fixture for vehicle lamp current and voltage, comprising a body (1), a drive assembly (2) disposed outside the body (1), and a placement fixture (5) disposed in front of the drive assembly (2), characterized in that, Also includes: The probe mechanism (3) is located at the output end of the drive component (2); An adaptive adjustment mechanism (4) is located outside the probe mechanism (3); The probe mechanism (3) includes a pressure plate (301) disposed at the output end of the drive assembly (2). A connecting cylinder (302) is disposed at the bottom of the outer wall of the pressure plate (301). A probe housing (305) is disposed at the bottom of the connecting cylinder (302). A piston chamber (306) is disposed at one end of the probe housing (305). A piston (307) is disposed at one end of the connecting cylinder (302). When the probe housing (305) is inserted into the detection port, it can undergo adaptive deformation movement according to the angle inside the detection port; A rigid connecting pipe (401) is provided on one side of the piston chamber (306), a valve (403) is provided on the inner wall of the rigid connecting pipe (401), a top ball (404) is movably provided on the top of the valve (403), and a return pipe (408) is provided on the inner wall of the valve (403).

2. The automatic testing fixture for vehicle lamp current and voltage according to claim 1, characterized in that: One end of the connecting cylinder (302) is connected to a telescopic rod (303); A return spring (304) is provided around the outer wall of the first telescopic rod (303). One end of the first telescopic rod (303) is connected to one end of the probe housing (305).

3. The automatic testing fixture for vehicle lamp current and voltage according to claim 1, characterized in that: One end of the rigid connecting pipe (401) is connected to a corrugated pipe (402). The outer wall of the top ball (404) is connected to a second telescopic rod (405). The outer wall of the second telescopic rod (405) is surrounded by a compression spring (406). One end of the second telescopic rod (405) is connected to a connecting plate (407).

4. The automatic testing fixture for vehicle lamp current and voltage according to claim 3, characterized in that: The inner wall of the return pipe (408) is movably provided with a top block (409). The bottom of the top block (409) is connected to a one-way spring (410).

5. The automatic testing fixture for vehicle lamp current and voltage according to claim 1, characterized in that: The inner wall of the probe housing (305) is provided with gas; The probe housing (305) is made of polyether-type 90ATPU.

6. The automatic testing fixture for vehicle lamp current and voltage according to claim 1, characterized in that: One end of the piston (307) is movably disposed on the inner wall of the piston chamber (306); The other end of the piston (307) is connected to one end of the connecting cylinder (302).

7. The automatic testing fixture for vehicle lamp current and voltage according to claim 2, characterized in that: The connecting cylinder (302) is hollow; The first telescopic rod (303) is hollow; The connecting cylinder (302) and the first telescopic rod (303) are interconnected through the rigid connecting pipe (401) and the corrugated pipe (402).

8. The automatic testing fixture for vehicle lamp current and voltage according to claim 3, characterized in that: The connecting plate (407) is provided with a ventilation opening; The connecting plate (407) is aligned with the inner wall of the valve (403).

9. The automatic testing fixture for vehicle lamp current and voltage according to claim 4, characterized in that: The outer wall of the top block (409) is inclined; One end of the top block (409) is disposed on the inner wall of the return pipe (408).

10. The automatic testing fixture for vehicle lamp current and voltage according to claim 1, characterized in that: The inner wall of the valve (403) is inclined; The top ball (404) is movably engaged with the inner wall of the valve (403).

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