A testing device for vehicle-mounted display screen and a method of using the same

Abstract

The present application relates to the technical field of display screen pressure resistance test equipment, and particularly provides a test device for vehicle-mounted display screen and a use method thereof, the test device comprising a test table for placing a display screen to be tested, a test head movably arranged above the test table, and a driving assembly for driving the test head to move, the driving assembly comprising a telescopic structure and a driving part for driving the telescopic structure to telescope, the test head being arranged on the telescopic structure, the telescopic structure being configured to drive the test head to telescope along a first direction or telescope along a first direction and then telescope along a second direction, the first direction being perpendicular to the display screen to be tested, and the second direction being parallel to the display screen to be tested. The present application overcomes the limitation of only being able to perform click tests in the prior art, realizes a combined action test of pressing and sliding, enriches test working conditions, improves test comprehensiveness, and provides a more reliable detection means for quality control of vehicle-mounted display screens.

Description

Technical Field

[0001] This invention relates to the field of display screen pressure resistance testing equipment, specifically a testing device for vehicle-mounted displays and its usage method. Background Technology

[0002] During the manufacturing process of automotive LCD displays, multiple performance tests are required. Among them, the pressure resistance test is used to evaluate the structural strength and functional stability of the display under predetermined pressure. As automotive displays develop towards touch integration, users will not only perform click operations in actual use, but also frequently perform interactive actions such as swiping and dragging. This places higher demands on the pressure resistance and scratch resistance of the display surface.

[0003] In the prior art, for example, Chinese invention patent (patent application number: CN202310907794.9) discloses a pressure resistance testing device for vehicle-mounted LCD screens. This testing device uses a bellows drive mechanism to provide working power for the touch pressure testing components. It can effectively control the impact force during simulated click testing, thereby reducing the pressure damage to the display screen. It has a significant advantage in ensuring the functional integrity of vehicle-mounted LCD screens and avoiding direct scrapping.

[0004] However, the existing testing devices still have shortcomings: their touch pressure testing components can only reciprocate up and down in a direction perpendicular to the display surface to simulate point clicking, but cannot drive the test head to slide along the display surface while under pressure. Therefore, it is difficult to simulate user touch operations such as menu swiping and map dragging in actual use. This makes the testing mode of the device relatively simple and unable to cover the complex stress conditions that in-vehicle displays experience in actual interactive scenarios. Consequently, it is difficult to meet the increasingly diverse and multi-stress combination testing needs, resulting in the inability to effectively detect some potential defects such as surface wear, film peeling, or internal circuit fatigue. To address these problems, this invention proposes a testing device for in-vehicle displays and its method of use. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a testing device and method for vehicle display screens. This invention overcomes the limitation of the prior art, which can only perform click tests, and realizes composite action testing of pressing and sliding. This enriches the testing conditions, improves the comprehensiveness of the test, and provides a more reliable testing method for the quality control of vehicle display screens.

[0006] This invention is achieved through the following technical solution: According to one aspect of the present invention, a testing apparatus for an in-vehicle display screen is provided, comprising a test platform for placing the display screen under test, a test head movably disposed above the test platform, and a driving assembly for driving the test head to move. The driving assembly includes a telescopic structure and a driving part for driving the telescopic structure to extend and retract. The test head is disposed on the telescopic structure, and the telescopic structure is configured to drive the test head to extend and retract along a first direction or extend and retract along the first direction and then extend and retract along a second direction. The first direction is perpendicular to the display screen under test, and the second direction is parallel to the display screen under test.

[0007] Optionally, the telescopic structure includes a fixed part, a first telescopic part, a second telescopic part, and a locking part. The first telescopic part is slidably connected to the fixed part along the first direction, the second telescopic part is slidably connected to the first telescopic part along the second direction, the test head is mounted on the second telescopic part, and the locking part is used to lock the second telescopic part to the first telescopic part, so as to selectively restrict or allow the second telescopic part to extend or retract relative to the first telescopic part along the second direction.

[0008] Optionally, the driving part is a fan, the fixed part and the first telescopic part both have air chambers, the air outlet of the fan is connected to the air chamber of the fixed part, the first telescopic part is dynamically sealed to the air chamber of the fixed part, the second telescopic part is dynamically sealed to the air chamber of the first telescopic part, a first elastic element is provided between the first telescopic part and the fixed part, and a second elastic element is provided between the first telescopic part and the second telescopic part. The telescopic structure further includes a guide portion, which is configured to allow the second telescopic portion to extend relative to the first telescopic portion along the second direction after the first telescopic portion extends a length L relative to the fixed portion along the first direction.

[0009] Optionally, the guiding part includes a first air passage and a second air passage. One end of the first air passage is a first air port and the other end is a second air port. The first air port and the second air port are spaced apart on the air cavity of the fixing part along the first direction. The second air passage is disposed in the first telescopic part. One end of the second air passage is connected to the air cavity of the first telescopic part, and the other end has an opening formed on the contact surface of the first telescopic part and the fixing part in a dynamic seal.

[0010] Optionally, the locking part is a valve disposed on the first air passage.

[0011] Optionally, the guiding part further includes a third air passage that connects the air cavity of the fixing part to the outside, and the third air passage is disposed on the fixing part located between the first air port and the second air port.

[0012] Optionally, a first guide member is provided between the fixed part and the first telescopic part, and a second guide member is provided between the first telescopic part and the second telescopic part.

[0013] Optionally, the position of the test head relative to the second telescopic portion in the first direction is adjustable.

[0014] Optionally, the fan is connected to the air chamber of the fixed part through a hose. The drive assembly also includes an intermittent air supply structure, which includes a cam and a mounting bracket. The mounting bracket is fixed to the test bench. The mounting bracket has a limiting part located near the hose. The cam is located on the side of the hose away from the limiting part. The cam is driven to rotate by a motor.

[0015] According to another aspect of the present invention, a method for testing an in-vehicle display screen using the above-described device is provided, comprising the following steps: Step 1: Place the vehicle display screen to be tested on the test platform; Step 2: Determine the test mode. If it is a fixed-point click test, the telescopic structure only needs to drive the test head to extend and retract along the first direction to apply vertical pressure to the display screen and complete the fixed-point click test. If it is a press-slide test, the telescopic structure drives the test head to extend and retract along the first direction and then along the second direction. The test head slides along the surface of the display screen while in the press state to complete the press-slide test. Step 3: Remove the tested vehicle display screen from the test bench.

[0016] Compared with the prior art, the present invention provides a testing device for vehicle-mounted displays and a method for using the same, which has the following beneficial effects: 1. This invention, by mounting the test head on a telescopic structure, allows the test head to extend and retract along a first direction, applying vertical pressure to the display screen for point-to-point clicking tests. Furthermore, the telescopic structure can also extend and retract the test head along the first direction and then along a second direction, enabling the test head to slide horizontally across the display screen surface while under pressure, thus achieving a press-and-slide test. Therefore, this testing device overcomes the limitation of existing testing devices that can only perform click tests, enriching the testing conditions and improving the comprehensiveness of the tests. 2. The telescopic structure of the present invention includes a fixed part, a first telescopic part, a second telescopic part, and a locking part, which can flexibly switch the test mode for the display screen; 3. The conductive part of the present invention includes a first air passage and a second air passage. With the relative movement of the fixing part and the first telescopic part, the "click first, slide later" pressing and sliding test simulation of the test head on the display screen can be effectively realized. 4. The locking part of the present invention is a valve provided on the first air passage. By controlling the opening and closing of the valve, the second telescopic part can be selectively restricted or allowed to extend and retract relative to the first telescopic part in the second direction. 5. By providing a third air passage on the fixed part, the present invention can completely expel the air from the inner cavity of the first telescopic part, thereby ensuring that the second telescopic part is completely reset. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of the testing device for an in-vehicle display screen; Figure 2 for Figure 1 Front view structural diagram; Figure 3 for Figure 1 A schematic diagram of the front sectional structure; Figure 4 for Figure 3 A magnified structural diagram at point A; Figure 5 A schematic diagram of an intermittent gas supply structure; Figure 6 This is a schematic diagram of the telescopic structure and the test head.

[0018] In the diagram: 100, test stand; 200, test head; 210, screw; 220, nut; 300, drive assembly; 310, telescopic structure; 311, fixing part; 3110, first boss; 312, first telescopic part; 3120, second boss; 313, second telescopic part; 314, locking part; 320, drive part; 321, hose; 330, first elastic element; 331, second elastic element; 340, conductive part; 341. First air passage; 3410, First air inlet; 3411, Second air inlet; 342, Second air passage; 343, Third air passage; 350, First guide component; 351, First guide rod; 352, First guide seat; 360, Second guide component; 361, Second guide rod; 362, Second guide seat; 370, Intermittent air supply structure; 371, Cam; 3710, Roller; 372, Mounting bracket; 3720, Limiting part; 400, Display screen. Detailed Implementation

[0019] 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.

[0020] As described in the background section, the existing vehicle LCD screen pressure resistance testing device (patent application number: CN202310907794.9) has the following defects: its touch pressure testing component can only reciprocate up and down in a direction perpendicular to the screen surface to simulate point clicking, but cannot drive the test head to slide along the screen surface in a pressed state. Therefore, it is difficult to simulate the sliding touch operation of users in actual use, such as menu sliding and map dragging. This makes the testing mode of the device relatively simple and cannot cover the complex stress conditions that vehicle screens are subjected to in actual interactive scenarios. As a result, it is difficult to meet the growing demand for diverse and multi-stress combination testing, resulting in some potential defects such as surface wear, film peeling or internal circuit fatigue not being effectively detected.

[0021] To address the above issues, please refer to the following implementation example: Figures 1 to 6 According to one aspect of an embodiment of the present invention, a testing device for an in-vehicle display screen is provided, mainly including a test platform 100 for placing a display screen 400 under test, a test head 200 movably disposed above the test platform 100, and a driving assembly 300 for driving the test head 200 to move. The driving assembly 300 includes a telescopic structure 310 and a driving part 320 for driving the telescopic structure 310 to extend and retract. The test head 200 is disposed on the telescopic structure 310. The telescopic structure 310 is configured to drive the test head 200 to extend and retract along a first direction or extend and retract along the first direction and then extend and retract along a second direction. The first direction is perpendicular to the display screen 400 under test, and the second direction is parallel to the display screen 400 under test. The testing device employing this structure, by mounting the test head 200 on the telescopic structure 310, allows the test head 200 to extend and retract along a first direction, applying vertical pressure to the display screen 400 for point-click testing. Furthermore, the telescopic structure 310 can also extend and retract the test head 200 along the first direction and then along a second direction, enabling the test head 200 to slide horizontally along the surface of the display screen 400 while under pressure, thus achieving a press-and-slide test on the display screen 400. Therefore, this testing device overcomes the limitation of existing testing devices that can only perform click tests, enriching the testing conditions and improving the comprehensiveness of the test.

[0022] In some embodiments, the telescopic structure 310 includes a fixing part 311, a first telescopic part 312, a second telescopic part 313, and a locking part 314. The first telescopic part 312 is slidably connected to the fixing part 311 along a first direction, and the second telescopic part 313 is slidably connected to the first telescopic part 312 along a second direction. The test head 200 is mounted on the second telescopic part 313. The locking part 314 is used to lock the second telescopic part 313 to the first telescopic part 312 to selectively restrict or allow the second telescopic part 313 to extend or retract relative to the first telescopic part 312 along the second direction. Using this telescopic structure 310, when only a point-click test is needed on the display screen 400, the second telescopic part 313 can be locked to the first telescopic part 312 by the locking part 314, restricting the movement of the test head 200 in the second direction. The driving part 320 drives the first telescopic part 312 to extend and retract relative to the fixed part 311 in the first direction to perform a vertical pressure test on the display screen 400. When a press-slide test is needed on the display screen 400, the locking part 314 releases the lock between the first telescopic part 312 and the second telescopic part 313. The driving part 320 drives the first telescopic part 312 to extend and retract relative to the fixed part 311 in the first direction, and then drives the second telescopic part 313 to extend and retract relative to the first telescopic part 312 in the second direction, thereby realizing the press-slide test on the display screen 400.

[0023] In some embodiments, the drive unit 320 is a fan, and both the fixed part 311 and the first telescopic part 312 have air chambers. The air outlet of the fan communicates with the air chamber of the fixed part 311. The first telescopic part 312 is dynamically sealed to the air chamber of the fixed part 311. Specifically, the first telescopic part 312 is L-shaped. The first end of the first telescopic part 312 is a piston structure that extends into the air chamber of the fixed part 311. The second end of the first telescopic part 312 extends from the lower end of the fixed part 311 and extends in a second direction. The air chamber of the first telescopic part 312 is located at the second end of the first telescopic part 312. The second telescopic part 313 is dynamically sealed to the air chamber of the first telescopic part 312. Similar to the first end of the first telescopic part 312, the first end of the second telescopic part 313 is a piston structure that extends into the air chamber of the first telescopic part 312. The second end of the second telescopic part 313 extends from the second end of the first telescopic part 312. The test head 200 is installed at the second end of the second telescopic part 313. A first elastic element 330 is provided between the fixed part 311 and the fixed part 311. The lower end of the fixed part 311 is provided with a first boss 3110 protruding toward the first telescopic part 312. The first elastic element 330 is a compression spring installed between the first boss 3110 and the first end of the first telescopic part 312. A second elastic element 331 is provided between the first telescopic part 312 and the second telescopic part 313. The second end of the first telescopic part 312 is provided with a second boss 3120 protruding toward the second telescopic part 313. The second elastic element 331 is a compression spring installed between the second boss 3120 and the first end of the second telescopic part 313. The telescopic structure 310 also includes a conducting part 340. The conducting part 340 is configured to allow the second telescopic part 313 to extend relative to the first telescopic part 312 in a second direction after the first telescopic part 312 extends a length L relative to the fixed part 311 in a first direction. The length L is the distance that the test head 200 needs to move along the first direction when clicking the display screen 400. In other words, the conductive part 340 allows the first telescopic part 312 and the second telescopic part 313 to extend and retract sequentially, thereby simulating the "click first, slide later" press-and-slide test of the test head 200 on the display screen 400, thus improving the effect of the simulation test. With the above settings, when the display screen 400 needs to be tested, the fan is turned on, the air pressure in the air chamber of the fixed part 311 increases, and under the action of air pressure, the first telescopic part 312 extends relative to the fixed part 311 in the first direction, the first elastic element 330 is deformed by pressure and stores force, and the second telescopic part 313 extends relative to the first telescopic part 312 in the second direction, the second elastic element 331 is deformed by pressure and stores force. After the fan is turned off, the first telescopic part 312 retracts under the elastic force of the first elastic element 330, and the second telescopic part 313 retracts under the elastic force of the second elastic element 331.

[0024] In order to simulate the "click first, slide later" pressing and sliding test of the test head 200 on the display screen 400, in some embodiments, the conductive part 340 includes a first air passage 341 and a second air passage 342. One end of the first air passage 341 is a first air port 3410 and the other end is a second air port 3411. The first air port 3410 and the second air port 3411 are spaced apart on the air cavity of the fixed part 311 along a first direction. The second air passage 342 is disposed on the first telescopic part 312. One end of the second air passage 342 is connected to the air cavity of the first telescopic part 312, and the other end has an opening formed on the contact surface of the first telescopic part 312 and the fixed part 311 in a dynamic seal. When the fan starts, the first telescopic part 312 gradually extends from the lower end of the fixed part 311. During the extension process, the first air passage 341 and the second air passage 342 are not connected. At this time, the airflow cannot enter the air passage of the first telescopic part 312 from the air chamber of the fixed part 311. The fan drives the first telescopic part 312 to move only by wind power. Only when the first telescopic part 312 extends a length L relative to the fixed part 311 in the first direction, the first air passage 341 and the second air passage 342 are connected. The two air passages are connected to form an airflow channel. At this time, the first telescopic part 312 no longer moves. The airflow enters the air chamber of the first telescopic part 312 from the air chamber of the fixed part 311 through the airflow channel, pushing the second telescopic part 313 to move.

[0025] In some embodiments, the locking part 314 is a valve provided on the first air passage 341. When the valve is closed, the airflow generated by the fan cannot enter the air chamber of the second telescopic part 313, which is equivalent to the second telescopic part 313 being locked relative to the first telescopic part 312 in the second direction. When the valve is open, the airflow generated by the fan can enter the air chamber of the second telescopic part 313, thus driving the second telescopic part 313 to move relative to the first telescopic part 312 in the second direction.

[0026] In the above embodiments, when the fan's air pressure disappears, the retraction of the first telescopic part 312 and the second telescopic part 313 will occur simultaneously. At this time, the retraction of the first telescopic part 312 will disconnect the first air passage 341 and the second air passage 342, preventing the air in the inner cavity of the first telescopic part 312 from being discharged, thus preventing the second telescopic part 313 from fully resetting. To solve this problem, in some embodiments, the connecting part 340 further includes a third air passage 343 that connects the air cavity of the fixing part 311 to the outside. The third air passage 343 is disposed on the fixing part 311 located between the first air port 3410 and the second air port 3411. By providing the third air passage 343 on the fixing part 311, the air in the inner cavity of the first telescopic part 312 can be completely discharged, thereby ensuring that the second telescopic part 313 fully resets.

[0027] In some embodiments, a first guide member 350 is provided between the fixed part 311 and the first telescopic part 312. The first guide member 350 includes a first guide rod 351 and a first guide seat 352. The first guide rod 351 is fixed to the fixed part 311, and the first guide seat 352 is fixed to the first telescopic part 312. The first guide rod 351 and the first guide seat 352 are guided and engaged along a first direction. A second guide member 360 is provided between the first telescopic part 312 and the second telescopic part 313. The second guide member 360 includes a second guide rod 361 and a second guide seat 362. The second guide rod 361 is fixed to the second telescopic part 313, and the second guide seat 362 is fixed to the first telescopic part 312. The second guide rod 361 and the second guide seat 362 are guided and engaged along a second direction. By providing the first guide member 350 and the second guide member 360, the stability of the relative movement between the fixed part 311 and the first telescopic part 312, and between the first telescopic part 312 and the second telescopic part 313, can be effectively improved.

[0028] In some embodiments, the position of the test head 200 relative to the second telescopic part 313 in the first direction is adjustable. Specifically, the test head 200 is provided with a screw 210, and the second telescopic part 313 is provided with a mounting hole through which the screw 210 passes. The screw 210 is clamped and fixed to the second telescopic part 313 by two nuts 220. With this configuration, under the same wind pressure, the pressure of the test head 200 on the display screen 400 can be changed by altering the position of the test head 200 relative to the second telescopic part 313 in the first direction, thus meeting testing requirements under different pressures.

[0029] In the above embodiments, the air pressure can be adjusted by turning the fan on and off, but this can easily damage the fan. Therefore, in some embodiments, the fan is connected to the air chamber of the fixed part 311 through the hose 321. The drive assembly 300 also includes an intermittent air supply structure 370, which includes a cam 371 and a mounting bracket 372. The mounting bracket 372 is fixed to the test bench 100. The mounting bracket 372 has a limiting part 3720 near the hose 321. The cam 371 is located on the side of the hose 321 away from the limiting part 3720. The cam 371 is driven to rotate by a motor. By setting the intermittent air supply structure, the motor drives the cam 371 to rotate. The cam 371 repeatedly squeezes the hose 321 used for ventilation, which can change the air pressure output from the fan outlet. Under the elastic force of the first elastic element 330 and the second elastic element 331, the test head 200 can move back and forth along the first direction or the second direction to perform continuous click and slide tests on the display screen 400. In order to reduce the friction between the cam 371 and the hose 321, in some embodiments, a roller 3710 is installed around the outer periphery of the cam 371. The cam 371 makes rolling contact with the hose 321 through the roller 3710, which can reduce the wear on the hose 321.

[0030] According to another aspect of the present invention, a method for testing a vehicle-mounted display screen 400 as described above is provided, comprising the following steps: Step 1: Place the vehicle display screen 400 to be tested on the test platform 100; Step 2: Determine the test mode. If it is a fixed-point click test, the telescopic structure 310 only needs to drive the test head 200 to extend and retract along the first direction to apply vertical pressure to the display screen 400 and complete the fixed-point click test of the display screen 400. If it is a press-slide test of the display screen 400, the telescopic structure 310 drives the test head 200 to extend and retract along the first direction and then along the second direction. The test head 200 slides along the surface of the display screen 400 in the press state to complete the press-slide test of the display screen 400. Step 3: Remove the tested vehicle display screen 400 from the test stand 100.

[0031] 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 testing apparatus for an in-vehicle display screen, comprising a test platform (100) for placing the display screen (400) under test, a test head (200) movably disposed above the test platform (100), and a driving assembly (300) for driving the test head (200) to move, characterized in that, The drive assembly (300) includes a telescopic structure (310) and a drive part (320) for extending and retracting the telescopic structure (310). The test head (200) is disposed on the telescopic structure (310). The telescopic structure (310) is configured to drive the test head (200) to extend and retract along a first direction or extend and retract along the first direction and then extend and retract along a second direction. The first direction is perpendicular to the display screen (400) under test, and the second direction is parallel to the display screen (400) under test.

2. The testing device for vehicle-mounted displays according to claim 1, characterized in that: The telescopic structure (310) includes a fixed part (311), a first telescopic part (312), a second telescopic part (313), and a locking part (314). The first telescopic part (312) is slidably connected to the fixed part (311) along the first direction, and the second telescopic part (313) is slidably connected to the first telescopic part (312) along the second direction. The test head (200) is mounted on the second telescopic part (313). The locking part (314) is used to lock the second telescopic part (313) to the first telescopic part (312) to selectively restrict or allow the second telescopic part (313) to extend or retract relative to the first telescopic part (312) along the second direction.

3. The testing device for vehicle-mounted displays according to claim 2, characterized in that: The drive unit (320) is a fan. The fixed part (311) and the first telescopic part (312) both have air chambers. The air outlet of the fan is connected to the air chamber of the fixed part (311). The first telescopic part (312) is dynamically sealed to the air chamber of the fixed part (311). The second telescopic part (313) is dynamically sealed to the air chamber of the first telescopic part (312). A first elastic element (330) is provided between the first telescopic part (312) and the fixed part (311). A second elastic element (331) is provided between the first telescopic part (312) and the second telescopic part (313). The telescopic structure (310) further includes a guide portion (340), which is configured to allow the second telescopic portion (313) to extend relative to the first telescopic portion (312) in the second direction after the first telescopic portion (312) has extended a length L relative to the fixed portion (311) in the first direction.

4. The testing device for vehicle-mounted displays according to claim 3, characterized in that: The conductive part (340) includes a first air passage (341) and a second air passage (342). One end of the first air passage (341) is a first air port (3410) and the other end is a second air port (3411). The first air port (3410) and the second air port (3411) are spaced apart along the first direction on the air cavity of the fixed part (311). The second air passage (342) is disposed on the first telescopic part (312). One end of the second air passage (342) is connected to the air cavity of the first telescopic part (312), and the other end has an opening formed on the contact surface of the first telescopic part (312) and the fixed part (311) in a dynamic seal.

5. The testing device for vehicle-mounted displays according to claim 4, characterized in that: The locking part (314) is a valve provided on the first air passage (341).

6. The testing device for vehicle-mounted displays and its method of use according to claim 4, characterized in that: The connecting part (340) further includes a third air passage (343) that connects the air chamber of the fixing part (311) to the outside. The third air passage (343) is disposed on the fixing part (311) located between the first air port (3410) and the second air port (3411).

7. The testing device for vehicle-mounted displays according to claim 2, characterized in that: A first guide member (350) is provided between the fixed part (311) and the first telescopic part (312), and a second guide member (360) is provided between the first telescopic part (312) and the second telescopic part (313).

8. The testing device for vehicle-mounted displays according to claim 2, characterized in that: The position of the test head (200) relative to the second telescopic part (313) in the first direction is adjustable.

9. The testing device for vehicle-mounted displays according to claim 3, characterized in that: The fan is connected to the air chamber of the fixed part (311) through a hose (321). The drive assembly (300) also includes an intermittent air supply structure (370). The intermittent air supply structure (370) includes a cam (371) and a mounting bracket (372). The mounting bracket (372) is fixed to the test bench (100). The mounting bracket (372) has a limiting part (3720) located near the hose (321). The cam (371) is located on the side of the hose (321) away from the limiting part (3720). The cam (371) is driven to rotate by a motor.

10. A method for testing a vehicle-mounted display screen using any one of claims 1 to 9, characterized in that, Includes the following steps: Step 1: Place the vehicle display screen (400) to be tested on the test bench (100); Step 2: Determine the test mode. If it is a fixed-point click test, the telescopic structure (310) only needs to drive the test head (200) to extend and retract along the first direction to apply vertical pressure to the display screen (400) and complete the fixed-point click test of the display screen (400). If it is a press-slide test of the display screen (400), the telescopic structure (310) drives the test head (200) to extend and retract along the first direction and then along the second direction. The test head (200) slides along the surface of the display screen (400) in the press state to complete the press-slide test of the display screen (400). Step 3: Remove the tested vehicle display screen (400) from the test stand (100).

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