Display screen test fixture

Abstract

The invention relates to the technical field of display screen testing, and particularly discloses a display screen testing jig which comprises a testing main body and a detection frame, the detection frame is composed of an adjusting support and an optical probe, an inner cavity of the testing main body is slidably connected with a lifting table and provided with an air cylinder, and an inner cavity of the air cylinder is slidably connected with a piston rod. Dust, fingerprints, greasy dirt and the like on the display screen can be thoroughly cleaned through the cleaning assembly, so that test data can truly reflect the actual performance of the display screen, the defect that stains cover the display screen is avoided, and it is guaranteed that the test jig accurately judges the product quality; when the display screen is not cleaned up in the dust removal process, an alarm can be given in time, a worker can take measures in time conveniently, display screens of different specifications can be clamped and fixed through the clamping assembly, and it is guaranteed that the display screens do not shake, shift and the like in the testing process.

Description

Technical Field

[0001] This application relates to the field of display screen testing technology, and in particular to a display screen testing fixture. Background Technology

[0002] In today's rapidly evolving electronic product landscape, the display screen, as a crucial component for human-computer interaction, directly determines the overall quality and market competitiveness of electronic products. Whether it's smartphones, tablets, or various smart wearable devices, the display screen plays a vital role in image display and information transmission. However, during the display screen manufacturing process, due to complex manufacturing processes and differences in raw material properties, some defects are unavoidable, such as bright spots, dark spots, and color deviations. To ensure that products meet quality standards, the display screens must undergo rigorous testing using testing fixtures before leaving the factory.

[0003] The existing technology still has the following problems:

[0004] 1. Existing display screen testing fixtures cannot clean the outer surface of the display screen. During production, transportation, and storage, the surface of the display screen is easily contaminated with various stains such as dust, fingerprints, and oil. If these stains are not removed or are not thoroughly removed, they will significantly interfere with the test results. During optical performance testing, dust and oil will change the light reflection and transmission characteristics of the display screen surface, leading to deviations in the measurement of parameters such as brightness and color accuracy. This will prevent the test data from truly reflecting the actual performance of the display screen. Stains may also cover up defects in the display screen itself, such as minor scratches and bright spots, affecting the accurate judgment of product quality.

[0005] 2. Existing display screen testing fixtures cannot clamp and fix displays of different specifications. If there is no suitable fixture to fix them during testing, the display screen is prone to shaking and displacement, which may cause damage due to collision and squeezing during the test, and also affect the accuracy of the test data. Summary of the Invention

[0006] To overcome the shortcomings of dust and oil stains during optical performance testing, which alter the light reflection and transmission characteristics of the display screen surface, leading to deviations in the measurement of parameters such as brightness and color accuracy, and causing test data to fail to accurately reflect the actual performance of the display screen, and which may also mask defects in the display screen itself, such as minor scratches and bright spots, affecting the accurate judgment of product quality, and the inability of test fixtures to clamp and fix display screens of different specifications, and the tendency for the display screen to shake or shift during testing without suitable clamps, resulting in damage due to collisions and compression during the testing process, and affecting the accuracy of test data, the present invention aims to provide a display screen test fixture to solve the above-mentioned deficiencies.

[0007] This application provides a display screen testing fixture, including a testing body and a testing frame. The testing frame consists of an adjusting bracket and an optical probe. A lifting platform is slidably connected to the inner cavity of the testing body. A cylinder is provided in the inner cavity of the testing body, and a piston rod is slidably connected to the inner cavity of the cylinder. The piston rod is fixedly connected to the bottom end of the lifting platform. A cleaning component is fixedly installed on the upper surface of the lifting platform. The testing frame is provided on the top bottom wall of the testing body. A display screen is provided on the outer surface of the cleaning component. A clamping component is provided in the inner cavity of the cleaning component. The cleaning component includes a support frame. A first threaded rod is rotatably connected to the inner cavity of the support frame. A protective cover is sleeved on the outer surface of the first threaded rod. A first motor is provided on the outer surface of the support frame. A movable frame is slidably connected to the outer surface of the protective cover. A connecting block is fixedly installed on the outer surface of the movable frame. A cleaning mechanism is provided in the inner cavity of the movable frame, and the cleaning mechanisms are evenly arranged on the movable frame. A wiping mechanism is provided on the outer surface of the movable frame, and a dust removal mechanism is provided on the outer surface of the wiping mechanism. A protruding plate is fixedly installed on the outer surface of the support frame.

[0008] Furthermore, the output end of the first motor is sleeved with the first threaded rod, the movable frame and the first threaded rod are connected by threads, the outer surfaces of the movable frame and the support frame are slidably connected, cams are evenly arranged on the top outer surface of the convex plate, the convex plate is located in the inner cavity of the movable frame when the movable frame moves, and the middle part of the connecting block near the cleaning mechanism is hollowed out.

[0009] Furthermore, the cleaning mechanism includes a cleaning block, a limiting sleeve fixedly installed on the inner wall of the cleaning block, a cleaning rod rotatably connected to the inner cavity of the cleaning block, a first sliding rod fixedly installed on the upper surface of the cleaning block, a first spring sleeved on the outer surface of the first sliding rod, a first limiting ring fixedly installed on the outer surface of the first sliding rod, a rack fixedly installed at the top of the first sliding rod, a fixing block fixedly installed on the upper surface of the moving frame, a gear rotatably connected to the inner cavity of the top of the fixing block, a toothed frame slidably connected to the outer surface of the fixing block, a squeezing rod fixedly installed at the top of the toothed frame, and a liquid storage bottle fixedly installed on the upper surface of the moving frame, with a nozzle provided at the top of the liquid storage bottle.

[0010] Furthermore, the limiting sleeve and the cleaning rod are rotatably connected, the first spring is located between the moving frame and the cleaning block, the first slide rod and the moving frame are slidably connected, the lower surface of the first limiting ring and the upper surface of the moving frame are in close contact, the rack and gear mesh, the gear frame and gear mesh, the extrusion rod is located directly above the nozzle and is in contact with the nozzle, the lower surface of the nozzle is provided with a nozzle, and the nozzle is close to the side of the connecting block and protrudes from the outside of the moving frame, and the bottom end of the cleaning rod is in close contact with the upper surface of the display screen.

[0011] Furthermore, the wiping mechanism includes a wiping frame, a floating block slidably connected to the inner cavity of the wiping frame, second slide rods fixedly installed at both ends of the floating block, a second spring sleeved on the outer surface of the second slide rods, a wiping strip fixedly installed at the bottom end of the floating block, a protrusion fixedly installed at one end of the wiping strip, the second slide rod and the wiping frame slidably connected, the wiping strip and the wiping frame slidably connected, the second spring is located between the inner walls of the floating block and the wiping frame, the protrusion and the wiping frame slidably connected, the cam height of the protrusion and the convex plate are flush, and when the moving frame moves, the cam of the protrusion and the convex plate contacts and generates compression, and the lower surface of the wiping strip is in close contact with the upper surface of the display screen.

[0012] Furthermore, the dust removal mechanism includes a dust removal block, a floating rod slidably connected to the inner cavity of the dust removal block, a second limiting ring fixedly installed on the outer surface of the floating rod, a scraper block fixedly installed at the bottom end of the floating rod, a rotating wheel rotatably connected to the end of the floating rod away from the scraper block, an inclined block slidably connected to the inner wall of the top of the dust removal block, a limiting rod fixedly installed on the outer surface of the dust removal block, a third spring sleeved on the outer surface of the limiting rod, a squeezing block fixedly installed at the top of the inclined block, an alarm fixedly installed on the outer surface of the dust removal block, and a button provided on the outer surface of the dust removal block.

[0013] Furthermore, the dust removal mechanism is evenly arranged on the wiping rack, and the dust removal block and the wiping rack are fixedly connected. The bottom end of the dust removal block is in close contact with the upper surface of the display screen, the top end of the rotating wheel is in close contact with the inclined block, the inclined block and the limit rod are slidably connected, the third spring is located between the dust removal block and the inclined block, the squeezing block and the dust removal block are slidably connected, the alarm and the button are electrically connected, and pressing the button controls the alarm to sound an alarm. The squeezing block and the button are in contact, and the lower surface of the second limit ring is in contact with the bottom wall of the dust removal block.

[0014] Furthermore, the clamping assembly includes a support platform, connecting plates fixedly installed on both sides of the bottom end of the support platform, a movable block slidably connected to the outer surface of the connecting plate, a clamping arm fixedly installed at the top of the movable block, the clamping arm protruding above the support platform, a second threaded rod rotatably connected to the inner cavity of the support platform, an adjustment mechanism provided in the middle of the bottom of the support platform, a second motor provided on the upper surface of the connecting plate, the output end of the second motor sleeved with the second threaded rod, the movable block and the second threaded rod being threadedly connected, and the thread directions at both ends of the second threaded rod being opposite, the support platform and the support frame being slidably connected, the movable block and the support frame being slidably connected, the display screen being placed on the upper surface of the support platform, and the two ends of the display screen being clamped and fixed by the clamping arm.

[0015] Furthermore, the adjustment mechanism includes an adjustment block, a third threaded rod rotatably connected to the inner cavity of the adjustment block, a slider slidably connected to the upper surface of the adjustment block, a drive rod fixedly installed on the outer surface of the slider, storage rods fixedly installed at the four corners of the adjustment block, a lifting rod rotatably connected to the inner cavity of the storage rod, a lifting seat fixedly installed at the end of the lifting rod away from the storage rod, and a drive groove opened on the outer surface of the lifting seat.

[0016] Furthermore, the slider and the third threaded rod are connected by threads, the drive groove is set at an angle, the drive rod and the drive groove are slidably connected, the adjusting block and the bottom wall of the support frame are fixedly connected, and the lifting seat and the bottom wall of the support platform are fixedly connected.

[0017] The technical solution provided in this application has at least the following technical effects or advantages:

[0018] 1. By employing cleaning components, this solution effectively addresses the limitations of existing display screen testing fixtures in cleaning the outer surface of the display screen. During production, transportation, and storage, the display screen surface is highly susceptible to dust, fingerprints, oil, and other contaminants. If these contaminants are not removed or are not thoroughly removed, they can significantly interfere with test results. During optical performance testing, dust, fingerprints, and oil can alter the light reflection and transmission characteristics of the display screen surface, leading to deviations in the measurement of parameters such as brightness and color accuracy. This results in test data that cannot accurately reflect the actual performance of the display screen. Furthermore, contaminants may mask inherent defects in the display screen itself, such as minor… Scratches, bright spots, etc., can affect the accurate judgment of product quality. This invention can thoroughly remove dust, fingerprints, and oil stains from the display screen through a cleaning component, preventing dust, fingerprints, and oil stains from altering the light reflection and transmission characteristics of the display screen surface. This ensures the accuracy of measurement data for parameters such as brightness and color accuracy, allowing test data to truly reflect the actual performance of the display screen. It also prevents stains from masking defects in the display screen itself, ensuring the test fixture's accurate judgment of product quality. In addition, it can promptly issue an alarm if any dust adheres to the display screen and is not cleaned properly during the dust removal process, facilitating timely action by staff.

[0019] 2. By employing a clamping component, this invention effectively solves the problem that existing display screen testing fixtures cannot clamp and fix displays of different specifications. Without a suitable clamping fixture during testing, the display screen is prone to shaking or shifting, leading to damage due to collisions or squeezing during the test, and affecting the accuracy of the test data. This invention, through its clamping component, can clamp and fix displays of different specifications, ensuring that the display screen will not shake or shift during testing, thereby avoiding damage due to collisions or squeezing during the test and improving the accuracy of the test data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application;

[0021] Figure 2 This is a schematic diagram of the detection frame structure in Embodiment 1 of this application;

[0022] Figure 3 This is a schematic diagram of the cleaning component structure in Embodiment 1 of this application;

[0023] Figure 4 This is a schematic diagram of the convex plate structure in Embodiment 1 of this application;

[0024] Figure 5 This is a schematic cross-sectional view of the protective cover in Embodiment 1 of this application;

[0025] Figure 6 This is a schematic diagram of the connecting block structure in Embodiment 1 of this application;

[0026] Figure 7 This is a partial cross-sectional structural diagram of the mobile frame in Embodiment 1 of this application;

[0027] Figure 8 This is a schematic diagram of the cross-sectional structure of the cleaning block in Embodiment 1 of this application;

[0028] Figure 9 This is a schematic cross-sectional view of the wiping rack in Embodiment 1 of this application;

[0029] Figure 10 This is a schematic diagram of the dust removal mechanism in Embodiment 1 of this application;

[0030] Figure 11 This is a schematic diagram of the cross-sectional structure of the support in Embodiment 2 of this application;

[0031] Figure 12 This is a schematic diagram of the adjustment mechanism structure in Embodiment 2 of this application.

[0032] In the diagram: 1. Test body; 2. Lifting platform; 3. Cleaning assembly; 31. Support frame; 32. First threaded rod; 33. Protective cover; 34. First motor; 35. Moving frame; 36. Connecting block; 37. Cleaning mechanism; 371. Cleaning block; 372. Limiting sleeve; 373. Cleaning rod; 374. First sliding rod; 375. First spring; 376. First limiting ring; 377. Rack; 378. Fixing block; 379. Gear; 3710. Gear frame; 3711. Squeezing rod; 3712. Liquid storage bottle; 3713. Nozzle; 38. Wiping mechanism; 381. Wiping frame; 382. Floating block; 383. Second sliding rod; 384. Second spring; 385. Wiping strip; 386. Protrusion; 3 9. Dust removal mechanism; 391. Dust removal block; 392. Floating rod; 393. Second limit ring; 394. Dust scraper block; 395. Rotary wheel; 396. Inclined block; 397. Limiting rod; 398. Third spring; 399. Squeezing block; 3910. Alarm; 3911. Button; 310. Protruding plate; 4. Detection frame; 5. Display screen; 6. Clamping assembly; 61. Support platform; 62. Connecting plate; 63. Moving block; 64. Clamping arm; 65. Second threaded rod; 66. Adjustment mechanism; 661. Adjustment block; 662. Third threaded rod; 663. Slider; 664. Drive rod; 665. Storage rod; 666. Lifting rod; 667. Lifting seat; 668. Drive groove; 67. Second motor. Detailed Implementation

[0033] For situations where the outer surface of the display screen cannot be cleaned during testing, this invention uses a cleaning component to thoroughly remove dust, fingerprints, and oil stains from the display screen, preventing these substances from altering the light reflection and transmission characteristics of the display screen surface and ensuring the accuracy of measurement data for parameters such as brightness and color accuracy. Furthermore, for situations where it is impossible to clamp and fix display screens of different sizes, this invention uses a clamping component to clamp and fix display screens of different sizes, ensuring that the display screen will not shake or shift during testing.

[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0035] Example 1:

[0036] Please see Figure 1 and Figure 2As shown, a display screen testing fixture includes a testing body 1 and a testing frame 4. The testing frame 4 consists of an adjusting bracket and an optical probe. The optical probe is responsible for collecting optical signals from the display screen 5. The adjusting bracket supports and adjusts the position of the optical probe to ensure that the probe can be accurately aligned with the testing area of ​​the display screen 5. A lifting platform 2 is slidably connected to the inner cavity of the testing body 1. A cylinder is provided in the inner cavity of the testing body 1, and a piston rod is slidably connected to the inner cavity of the cylinder. The piston rod is fixedly connected to the bottom end of the lifting platform 2. A cleaning component 3 is fixedly installed on the upper surface of the lifting platform 2. The testing frame 4 is provided on the top and bottom wall of the testing body 1. The display screen 5 is provided on the outer surface of the cleaning component 3. A clamping component 6 is provided in the inner cavity of the cleaning component 3. During testing, the display screen 5 is placed on the clamping component 6 for clamping and fixing. The outer surface of the display screen 5 is cleaned by the cleaning component 3 to keep the outer surface of the display screen 5 clean. The operation of the cylinder drives the piston rod to lift the lifting platform 2 so that the display screen 5 fits against the testing frame 4, making it easier for the testing frame 4 to test the display screen 5.

[0037] Please see Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the cleaning component 3 includes a support frame 31, with a first threaded rod 32 rotatably connected to the inner cavity of the support frame 31. A protective cover 33 is fitted onto the outer surface of the first threaded rod 32 to protect it. A first motor 34 is mounted on the outer surface of the support frame 31. A movable frame 35 is slidably connected to the outer surface of the protective cover 33. A connecting block 36 is fixedly mounted on the outer surface of the movable frame 35. A cleaning mechanism 37 is provided in the inner cavity of the movable frame 35, and the cleaning mechanisms 37 are evenly distributed on the movable frame 35. A wiping mechanism 38 is provided on the outer surface of the movable frame 35. The outer surface of the support frame 31 is provided with a dust removal mechanism 39, and a protruding plate 310 is fixedly installed on the outer surface of the support frame 31. The output end of the first motor 34 is sleeved with the first threaded rod 32. The moving frame 35 and the first threaded rod 32 are connected by threads. The outer surfaces of the moving frame 35 and the support frame 31 are slidably connected. Cams are evenly arranged on the top outer surface of the protruding plate 310. When the moving frame 35 moves, the protruding plate 310 is located in the inner cavity of the moving frame 35. The middle part of the connecting block 36 near the cleaning mechanism 37 is hollowed out to facilitate the subsequent spraying of cleaning liquid by the spray nozzle 3713. After cleaning the display screen 5, the moving frame 35 and the display screen 5 are connected as a whole. The gap is fixed so as not to hinder the subsequent testing of the display screen 5. That is, after cleaning, the cleaning component 3 will not obstruct the display screen 5. When cleaning the display screen 5, the display screen 5 is first clamped and fixed on the clamping component 6. At this time, the operation of the first motor 34 drives the first threaded rod 32. The rotation of the first threaded rod 32 drives the moving frame 35 to move on the support frame 31. The movement of the moving frame 35 drives the connecting block 36 to move, thereby driving the cleaning mechanism 37, wiping mechanism 38 and dust removal mechanism 39 to clean the outer surface of the display screen 5. The cleaning mechanism 37 can spray a cleaning agent on areas with large amounts of dust. The cleaning solution enhances the cleaning effect on the display screen 5. The wiping mechanism 38, under the pressure of the protruding plate 310, can repeatedly rub the display screen 5, increasing the friction between the wiping mechanism 38 and the outer surface of the display screen 5, and more effectively removing dust, dirt and other impurities attached to its outer surface. The dust removal mechanism 39 can remove dust, and if the dust is not cleaned, an alarm will be sounded, which is convenient for staff to intervene or maintain manually. Through the cooperation of the cleaning mechanism 37, the wiping mechanism 38 and the dust removal mechanism 39, a three-stage cleaning process is achieved, thereby ensuring that the display screen 5 is clean before testing.

[0038] Please see Figure 6 , Figure 7 and Figure 8As shown, the cleaning mechanism 37 includes a cleaning block 371. A limiting sleeve 372 is fixedly installed on the inner wall of the cleaning block 371. A cleaning rod 373 is rotatably connected to the inner cavity of the cleaning block 371. A first sliding rod 374 is fixedly installed on the upper surface of the cleaning block 371. A first spring 375 is sleeved on the outer surface of the first sliding rod 374. A first limiting ring 376 is fixedly installed on the outer surface of the first sliding rod 374. The first limiting ring 376 is used to limit the first sliding rod 374. Under the elastic force of the first spring 375, the first limiting ring 376 and the moving frame 35 maintain close contact. In this way, the position of the cleaning rod 373 remains relatively stable, which can flexibly limit the cleaning rod 373, so that the cleaning rod 373 and the display screen 5 remain in contact while being able to move upward under pressure. The first sliding rod 374 has a rack 377 fixedly installed at its top end. A fixing block 378 is fixedly installed on the upper surface of the moving frame 35. A gear 379 is rotatably connected to the inner cavity of the top end of the fixing block 378. A gear frame 3710 is slidably connected to the outer surface of the fixing block 378. A squeezing rod 3711 is fixedly installed at the top end of the gear frame 3710. A liquid storage bottle 3712 is fixedly installed on the upper surface of the moving frame 35. The inner cavity of the liquid storage bottle 3712 is used to store cleaning liquid and spray it under the pressure of the nozzle 3713. A nozzle 3713 is provided at the top end of the liquid storage bottle 3712. A limiting sleeve 372 and a cleaning rod 373 are rotatably connected. A first spring 375 is located between the moving frame 35 and the cleaning block 371. The first sliding rod 374 and the moving frame 35 are slidably connected. The lower surface of a limiting ring 376 is in close contact with the upper surface of the movable frame 35. A rack 377 meshes with a gear 379, and a gear frame 3710 meshes with the gear 379. A squeezing rod 3711 is located directly above the nozzle 3713, and the squeezing rod 3711 is in contact with the nozzle 3713. A nozzle is provided on the lower surface of the nozzle 3713, and the nozzle is close to the connecting block 36 and protrudes from the outside of the movable frame 35. The bottom end of the cleaning rod 373 is in close contact with the upper surface of the display screen 5. Thus, when the movable frame 35 moves, it can drive the cleaning rod 373 to roll on the display screen 5. That is, during the movement of the movable frame 35, the cleaning rod 373 rotates within the inner cavity of the cleaning block 371 and moves on the display screen 5, thereby performing preliminary cleaning of the outer surface of the display screen 5. (The limiting sleeve...) 372 is used to limit the cleaning rod 373, allowing the cleaning rod 373 to rotate within the cleaning block 371 when the moving frame 35 moves. When the cleaning rod 373 encounters difficult-to-clean particulate impurities, the cleaning rod 373, under the pressure of the particles, drives the first sliding rod 374 to slide within the moving frame 35 and compress the first spring 375. At this time, the upward movement of the first sliding rod 374 causes the rack 377 to move upward, and the upward movement of the rack 377 causes the gear 379 to rotate within the fixed block 378. The rotation of the gear 379 causes the gear frame 3710 to slide downward within the fixed block 378. At this time, the squeezing rod 3711 exerts a squeezing effect on the nozzle 3713, thereby causing the cleaning liquid in the reservoir 3712 to be sprayed out from the nozzle of the nozzle 3713.This design facilitates targeted spraying of cleaning fluid near hard-to-clean impurities or attachments, enabling subsequent cleaning. After passing over particles or impurities, the cleaning rod 373 quickly and firmly contacts the display screen 5 under the elastic force of the first spring 375, achieving continuous cleaning of the outer surface of the display screen 5.

[0039] Please see Figure 6 and Figure 9 As shown, the wiping mechanism 38 includes a wiping frame 381, a floating block 382 slidably connected to the inner cavity of the wiping frame 381, second slide rods 383 fixedly installed at both ends of the floating block 382, ​​a second spring 384 sleeved on the outer surface of the second slide rods 383, a wiping strip 385 fixedly installed at the bottom end of the floating block 382, ​​a protrusion 386 fixedly installed at one end of the wiping strip 385, the second slide rods 383 and the wiping frame 381 are slidably connected, and the wiping strip 385 and the wiping frame 381 are slidably connected. The second spring 384 is located between the inner walls of the floating block 382 and the wiping rack 381. The protrusion 386 and the wiping rack 381 are slidably connected. The cams of the protrusion 386 and the convex plate 310 are flush. When the moving frame 35 moves, the cams of the protrusion 386 and the convex plate 310 contact and generate pressure. The lower surface of the wiping strip 385 is in close contact with the upper surface of the display screen 5. The movement of the moving frame 35 drives the connecting block 36 to move, and the connecting block 36 drives the wiping rack 381 to move. The moving belt of the wiping rack 381... The wiping strip 385 performs secondary cleaning on the upper surface of the display screen 5. When the wiping frame 381 moves, the protrusion 386 and the cam on the protrusion plate 310 contact and exert a squeezing effect on the protrusion 386, causing the protrusion 386 to drive the wiping strip 385 to slide in the inner cavity of the wiping frame 381. At this time, the floating block 382 and the second slide bar 383 move in the inner cavity of the wiping frame 381 and squeeze the second spring 384. Under the elastic force of the second spring 384, the wiping strip 385 returns to its original position, so that the wiping strip 385 has a reciprocating rubbing effect when cleaning the display screen 5. The reciprocating rubbing increases the friction between the wiping strip 385 and the surface of the display screen 5. This friction can reach deeper into the tiny bumps and gaps on the screen surface, and more effectively remove the dust, dirt and other impurities attached therein. Together with the cleaning liquid sprayed by the liquid storage bottle 3712, it cleans the impurities that the cleaning rod 373 did not clean, so that the outer surface of the display screen 5 is free of dust contamination when testing.

[0040] Please see Figure 5 , Figure 6 and Figure 10As shown, the dust removal mechanism 39 includes a dust removal block 391. A floating rod 392 is slidably connected to the inner cavity of the dust removal block 391. A second limiting ring 393 is fixedly installed on the outer surface of the floating rod 392. A scraping block 394 is fixedly installed at the bottom end of the floating rod 392. A rotating wheel 395 is rotatably connected to the end of the floating rod 392 away from the scraping block 394. An inclined block 396 is slidably connected to the inner wall of the top of the dust removal block 391. A limiting rod 397 is fixedly installed on the outer surface of the dust removal block 391. A third spring 398 is sleeved on the outer surface of the limiting rod 397. A pressing block 399 is fixedly installed at the top of the inclined block 396. An alarm 3910 is fixedly installed on the outer surface of the dust removal block 391. A button 3911 is provided on the outer surface of the dust removal block 391. Dust removal mechanisms 39 are evenly arranged on the wiping rack 381, and dust removal blocks 391 are fixedly connected to the wiping rack 381. The bottom end of the dust removal block 394 is in close contact with the upper surface of the display screen 5. The top end of the rotating wheel 395 is in close contact with the inclined block 396. The inclined block 396 is slidably connected to the limiting rod 397. The third spring 398 is located between the dust removal block 391 and the inclined block 396. The squeezing block 399 is slidably connected to the dust removal block 391. The alarm 3910 and the button 3911 are electrically connected, and pressing the button 3911 controls the alarm 3910 to sound an alarm. The squeezing block 399 and the button 3911 are in contact. The lower surface of the second limiting ring 393 is in contact with the bottom wall of the dust removal block 391. When the wiping rack 381 moves, it drives the dust removal block 391. When the outer surface of the display screen 5 still has dust or the outer surface of the display screen 5 itself has defects, the dust scraper block 394 is used to scrape off the dust on the outer surface of the display screen 5, preventing the cleaning rod 373 and the wiping strip 385 from cleaning the dust. However, the dust only moves to a certain extent, so the dust scraper block 394 is used to push the dust off the outer surface of the display screen 5. When there are still dust particles attached to the outer surface of the display screen 5 or the display screen 5 itself has defects, it will squeeze the dust scraper block 394, causing the floating rod 392 to slide in the inner cavity of the dust removal block 391. The upward movement of the floating rod 392 causes the rotating wheel 395 to move upward. The upward movement of the rotating wheel 395 squeezes the inclined block 396. At this time, the inclined block 396 moves on the limiting rod 397 and drives the squeezing block 396. 9. Simultaneously, the inclined block 396 presses against the third spring 398 during sliding. The movement of the pressing block 399 presses the button 3911, causing the alarm 3910 to sound, reminding staff to take timely measures. The elastic force of the third spring 398 drives the inclined block 396 back to its original position, thereby causing the second limit ring 393 and the bottom wall of the dust removal block 391 to contact. This ensures that the bottom surfaces of the cleaning rod 373, wiping strip 385, and dust removal block 394 are on the same horizontal plane, enabling them to clean the display screen 5. The cleaning mechanism 37, wiping mechanism 38, and dust removal mechanism 39 work together. The cleaning mechanism 37 is used for initial dust removal and sprays cleaning fluid on any remaining dust for subsequent secondary dust removal, and can also perform targeted spot spraying.The wiping mechanism 38 is used for secondary dust removal and can repeatedly rub the display screen 5 during the dust removal process to improve the dust removal effect. The dust removal mechanism 39 is used for final dust removal, pushing away the dust remaining on the outer surface of the display screen 5. At the same time, it can sound an alarm if there are still any adhering substances on the upper surface of the display screen 5. By cleaning the outer surface of the display screen 5 through multiple dust removal mechanisms 39, rapid positioning and troubleshooting can be performed, facilitating manual intervention to observe whether it is dust or an original defect of the display screen 5. This ensures that the display screen 5 under test is in a state free of dust and impurities, so that the test data can truly reflect the actual performance of the display screen 5, avoid stains from masking the defects of the display screen 5 itself, and ensure that the test fixture can accurately judge the product quality.

[0041] Example 2:

[0042] Please see Figure 3 and Figure 11 As shown, the clamping assembly 6 includes a support platform 61. Connecting plates 62 are fixedly installed on both sides of the bottom end of the support platform 61. A movable block 63 is slidably connected to the outer surface of the connecting plate 62. A clamping arm 64 is fixedly installed on the top of the movable block 63, protruding above the support platform 61. In this way, when the support platform 61 is used for support, the clamping arm 64 can clamp and limit the display screen 5 from both sides. A second threaded rod 65 is rotatably connected to the inner cavity of the support platform 61. An adjustment mechanism 66 is provided in the middle of the bottom of the support platform 61. A second motor 67 is provided on the upper surface of the connecting plate 62. The output end of the second motor 67 is sleeved with the second threaded rod 65. The movable block 63 and the second threaded rod 65 are connected by threads, and the threads at both ends of the second threaded rod 65 are in opposite directions. The support platform 61 and the support frame 31 are slidably connected, and the movable block 63 and the support frame are slidably connected. 31. Sliding connection: The display screen 5 is placed on the upper surface of the support platform 61, and the two ends of the display screen 5 are clamped and fixed by the clamping arm 64. When clamping and fixing the display screen 5, the second threaded rod 65 is rotated in the inner cavity of the support platform 61 by controlling the operation of the second motor 67. The rotation of the second threaded rod 65 causes the moving block 63 to slide on the connecting plate 62. At this time, the spacing of the moving block 63 changes, so that the clamping arm 64 clamps and fixes the two sides of the display screen 5. This facilitates clamping and limiting the display screen 5 according to its size and specifications. The adjusting mechanism 66 is used to adjust the height of the support platform 61, that is, to change the support height of the display screen 5, so that the outer surface of the display screen 5 that needs to be cleaned can maintain close contact with the cleaning mechanism 37, the wiping mechanism 38 and the dust removal mechanism 39, while avoiding excessive pressure on the outer surface of the display screen 5.

[0043] Please see Figure 11 and Figure 12As shown, the adjustment mechanism 66 includes an adjustment block 661. A third threaded rod 662 is rotatably connected to the inner cavity of the adjustment block 661. A slider 663 is slidably connected to the upper surface of the adjustment block 661. A drive rod 664 is fixedly installed on the outer surface of the slider 663. A storage rod 665 is fixedly installed at the four corners of the adjustment block 661. A lifting rod 666 is rotatably connected to the inner cavity of the storage rod 665. A lifting seat 667 is fixedly installed at the end of the lifting rod 666 away from the storage rod 665. A drive groove 668 is formed on the outer surface of the lifting seat 667. The slider 663 and the third threaded rod 662 are connected by threads. The drive groove 668 is inclined. The drive rod 664 and the drive groove 668 slide... The adjustable block 661 is fixedly connected to the bottom wall of the support frame 31, and the lifting seat 667 is fixedly connected to the bottom wall of the support platform 61. When adjusting the height of the support platform 61, the slider 663 is driven to slide on the adjustable block 661 by rotating the third threaded rod 662. The sliding of the adjustable block 661 drives the drive rod 664 to slide in the inner cavity of the drive groove 668. At this time, the lifting rod 666 moves in the inner cavity of the storage rod 665 and drives the distance between the lifting seat 667 and the adjustable block 661 to change. As a result, the height of the lifting seat 667 changes and drives the height of the support platform 61 and the distance between the outer surface of the support frame 31 to change, thereby realizing the adjustment of the support height of the support platform 61.

[0044] In summary, during testing, the display screen 5 is held and fixed on the clamping assembly 6. The cleaning assembly 3 cleans the outer surface of the display screen 5 to keep it clean. The operation of the cylinder drives the piston rod to lift the lifting platform 2, so that the display screen 5 fits against the testing frame 4, facilitating testing of the display screen 5 by the testing frame 4. When cleaning the display screen 5, it is first clamped and fixed on the clamping assembly 6. At this time, the operation of the first motor 34 drives the first threaded rod 32. The rotation of the first threaded rod 32 causes the moving frame 35 to move on the support frame 31. The movement of the moving frame 35 causes the connecting block 36 to move, thereby driving the cleaning mechanism 37, wiping mechanism 38 and dust removal mechanism 39 to clean the outer surface of the display screen 5. The cleaning mechanism 37 can spray cleaning liquid on areas with large amounts of dust to improve the cleaning effect of the display screen 5. The wiping mechanism 38 can repeatedly rub the display screen 5 under the pressure of the convex plate 310, increasing the friction between the wiping mechanism 38 and the outer surface of the display screen 5, removing dust and dirt adhering to its outer surface. The cleaning mechanism 39 effectively removes dirt and other impurities, and can scrape off dust. If the dust is not cleaned properly, an alarm will be sounded, allowing for manual intervention or maintenance by staff. The cleaning mechanism 37, wiping mechanism 38, and dust removal mechanism 39 work together to achieve a three-stage cleaning process, ensuring that the display screen 5 is clean before testing. When clamping and fixing the display screen 5, the second motor 67 is controlled to drive the second threaded rod 65 to rotate in the inner cavity of the support platform 61. The rotation of the second threaded rod 65 causes the moving block 63 to slide on the connecting plate 62. At this time, the spacing of the moving block 63 changes, allowing the clamping arm 64 to clamp and fix the two sides of the display screen 5. This facilitates clamping and limiting the display screen 5 according to its size and specifications. The adjusting mechanism 66 is used to adjust the height of the support platform 61, that is, to change the support height of the display screen 5, so that the outer surface of the display screen 5 that needs to be cleaned can maintain close contact with the cleaning mechanism 37, wiping mechanism 38, and dust removal mechanism 39, while avoiding excessive pressure on the outer surface of the display screen 5.

[0045] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0046] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A display screen testing fixture, comprising a testing body (1) and a testing frame (4), wherein the testing frame (4) is composed of an adjustment bracket and an optical probe, characterized in that, The inner cavity of the test body (1) is slidably connected to a lifting platform (2). The inner cavity of the test body (1) is provided with a cylinder. The inner cavity of the cylinder is slidably connected to a piston rod, and the piston rod is fixedly connected to the bottom end of the lifting platform (2). A cleaning component (3) is fixedly installed on the upper surface of the lifting platform (2). A detection frame (4) is provided on the top bottom wall of the test body (1). A display screen (5) is provided on the outer surface of the cleaning component (3). A clamping component (6) is provided in the inner cavity of the cleaning component (3). The cleaning component (3) includes a support frame (31), a first threaded rod (32) is rotatably connected to the inner cavity of the support frame (31), a protective cover (33) is sleeved on the outer surface of the first threaded rod (32), a first motor (34) is provided on the outer surface of the support frame (31), a movable frame (35) is slidably connected to the outer surface of the protective cover (33), a connecting block (36) is fixedly installed on the outer surface of the movable frame (35), a cleaning mechanism (37) is provided in the inner cavity of the movable frame (35), and the cleaning mechanism (37) is evenly arranged on the movable frame (35), a wiping mechanism (38) is provided on the outer surface of the movable frame (35), a dust removal mechanism (39) is provided on the outer surface of the wiping mechanism (38), and a protruding plate (310) is fixedly installed on the outer surface of the support frame (31).

2. The display screen testing fixture as described in claim 1, characterized in that, The output end of the first motor (34) is sleeved with the first threaded rod (32). The movable frame (35) and the first threaded rod (32) are connected by threads. The outer surface of the movable frame (35) and the support frame (31) are slidably connected. Cams are evenly arranged on the top outer surface of the convex plate (310). When the movable frame (35) moves, the convex plate (310) is located in the inner cavity of the movable frame (35). The connecting block (36) is hollowed out in the middle part near the cleaning mechanism (37).

3. The display screen testing fixture as described in claim 1, characterized in that, The cleaning mechanism (37) includes a cleaning block (371), a limiting sleeve (372) fixedly installed on the inner wall of the cleaning block (371), a cleaning rod (373) rotatably connected to the inner cavity of the cleaning block (371), a first sliding rod (374) fixedly installed on the upper surface of the cleaning block (371), a first spring (375) sleeved on the outer surface of the first sliding rod (374), a first limiting ring (376) fixedly installed on the outer surface of the first sliding rod (374), and the top end of the first sliding rod (374) A rack (377) is fixedly installed, a fixing block (378) is fixedly installed on the upper surface of the movable frame (35), a gear (379) is rotatably connected to the inner cavity of the top end of the fixing block (378), a gear frame (3710) is slidably connected to the outer surface of the fixing block (378), a squeezing rod (3711) is fixedly installed at the top end of the gear frame (3710), a liquid storage bottle (3712) is fixedly installed on the upper surface of the movable frame (35), and a nozzle (3713) is provided at the top end of the liquid storage bottle (3712).

4. A display screen testing fixture as described in claim 3, characterized in that, The limiting sleeve (372) and the cleaning rod (373) are rotatably connected. The first spring (375) is located between the moving frame (35) and the cleaning block (371). The first slide rod (374) and the moving frame (35) are slidably connected. The lower surface of the first limiting ring (376) is in close contact with the upper surface of the moving frame (35). The rack (377) and the gear (379) are meshed. The gear frame (3710) and the gear (379) are meshed. The squeezing rod (3711) is located directly above the nozzle (3713) and is in contact with the nozzle (3713). The lower surface of the nozzle (3713) is provided with a nozzle, which is close to the side of the connecting block (36) and protrudes from the outside of the moving frame (35). The bottom end of the cleaning rod (373) is in close contact with the upper surface of the display screen (5).

5. A display screen testing fixture as described in claim 4, characterized in that, The wiping mechanism (38) includes a wiping frame (381), a floating block (382) slidably connected to the inner cavity of the wiping frame (381), second slide rods (383) fixedly installed at both ends of the floating block (382), a second spring (384) sleeved on the outer surface of the second slide rods (383), a wiping strip (385) fixedly installed at the bottom end of the floating block (382), and a protrusion (386) fixedly installed at one end of the wiping strip (385). The second slide rods (383) and the wiping frame (381) slide... The wiping strip (385) and the wiping frame (381) are slidably connected. The second spring (384) is located between the floating block (382) and the inner wall of the wiping frame (381). The protrusion (386) and the wiping frame (381) are slidably connected. The cam height of the protrusion (386) and the cam height of the convex plate (310) are flush. When the moving frame (35) moves, the cam of the protrusion (386) and the cam height of the convex plate (310) contact each other and generate compression. The lower surface of the wiping strip (385) and the upper surface of the display screen (5) are in close contact.

6. A display screen testing fixture as described in claim 1, characterized in that, The dust removal mechanism (39) includes a dust removal block (391), a floating rod (392) is slidably connected to the inner cavity of the dust removal block (391), a second limiting ring (393) is fixedly installed on the outer surface of the floating rod (392), a scraping block (394) is fixedly installed at the bottom end of the floating rod (392), a rotating wheel (395) is rotatably connected to the end of the floating rod (392) away from the scraping block (394), an inclined block (396) is slidably connected to the inner wall of the top end of the dust removal block (391), a limiting rod (397) is fixedly installed on the outer surface of the dust removal block (391), a third spring (398) is sleeved on the outer surface of the limiting rod (397), a squeezing block (399) is fixedly installed at the top end of the inclined block (396), an alarm (3910) is fixedly installed on the outer surface of the dust removal block (391), and a button (3911) is provided on the outer surface of the dust removal block (391).

7. A display screen testing fixture as described in claim 6, characterized in that, The dust removal mechanism (39) is evenly arranged on the wiping rack (381), and the dust removal block (391) and the wiping rack (381) are fixedly connected. The bottom end of the dust removal block (394) is in close contact with the upper surface of the display screen (5), the top end of the rotating wheel (395) is in close contact with the inclined block (396), the inclined block (396) and the limiting rod (397) are slidably connected, and the third spring (398) is located on the dust removal block (394). Between 91) and the inclined block (396), the extrusion block (399) and the dust removal block (391) are slidably connected, the alarm (3910) and the button (3911) are electrically connected, and pressing the button (3911) controls the alarm (3910) to sound an alarm, the extrusion block (399) and the button (3911) are in contact, and the lower surface of the second limiting ring (393) is in contact with the bottom wall of the dust removal block (391).

8. A display screen testing fixture as described in claim 1, characterized in that, The clamping assembly (6) includes a support platform (61), with connecting plates (62) fixedly installed on both sides of the bottom end of the support platform (61). A movable block (63) is slidably connected to the outer surface of the connecting plate (62), and a clamping arm (64) is fixedly installed at the top of the movable block (63). The clamping arm (64) protrudes above the support platform (61). A second threaded rod (65) is rotatably connected to the inner cavity of the support platform (61). An adjustment mechanism (66) is provided in the middle of the bottom of the support platform (61). The connecting plate (62) The upper surface of the support platform (61) is provided with a second motor (67), the output end of the second motor (67) is sleeved with the second threaded rod (65), the moving block (63) and the second threaded rod (65) are connected by threads, and the threads at both ends of the second threaded rod (65) are opposite in direction. The support platform (61) and the support frame (31) are slidably connected, the moving block (63) and the support frame (31) are slidably connected, the display screen (5) is placed on the upper surface of the support platform (61), and the two ends of the display screen (5) are clamped and fixed by the clamping arm (64).

9. A display screen testing fixture as described in claim 8, characterized in that, The adjustment mechanism (66) includes an adjustment block (661), a third threaded rod (662) is rotatably connected to the inner cavity of the adjustment block (661), a slider (663) is slidably connected to the upper surface of the adjustment block (661), a drive rod (664) is fixedly installed on the outer surface of the slider (663), a storage rod (665) is fixedly installed at the four corners of the adjustment block (661), a lifting rod (666) is rotatably connected to the inner cavity of the storage rod (665), a lifting seat (667) is fixedly installed at the end of the lifting rod (666) away from the storage rod (665), and a drive groove (668) is opened on the outer surface of the lifting seat (667).

10. A display screen testing fixture as described in claim 9, characterized in that, The slider (663) and the third threaded rod (662) are connected by threads. The drive groove (668) is inclined. The drive rod (664) and the drive groove (668) are slidably connected. The adjusting block (661) and the bottom wall of the support frame (31) are fixedly connected. The lifting seat (667) and the bottom wall of the support platform (61) are fixedly connected.

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