LCD liquid crystal display screen testing device

Abstract

The utility model discloses an LCD liquid crystal display screen testing device. The LCD liquid crystal display screen testing device comprises a main body structure; a strength test structure; and a fixing mechanism; the main body structure comprises a bottom plate, a bracket arranged on the bottom plate and a top plate at the top of the bracket; the strength testing structure comprises a hydraulic cylinder and a detection head driven by the hydraulic cylinder; the fixing mechanism comprises two sets of bosses symmetrically arranged on the bottom plate, an adjusting screw rod and a bearing plate, the adjusting screw rod is installed on the bosses in a threaded mode, a handle is welded to one end of the adjusting screw rod, the other end of the adjusting screw rod is rotatably installed on the bearing plate, and the bearing plate is arranged in an L shape. Through cooperation of the lead screw and the motor, the detection head can be displaced, multi-point testing and scratch testing can be carried out, the LCD can be comprehensively detected, the detection result is more accurate, and it is ensured that products have good quality.

Description

Technical Field

[0001] The utility model relates to the technical field of LCD liquid crystal display screen testing equipment, in particular to an LCD liquid crystal display screen testing device. Background Art

[0002] LCD is a display technology widely used in many devices such as TVs, computer monitors, tablets, smartphones, etc. LCD technology creates images by using liquid crystal materials and a backlight system. The liquid crystal material changes its light transmittance under the action of an electric field, thereby controlling the light points and colors on the screen, while the backlight system provides light source for the liquid crystal material.

[0003] After the LCD display screen is produced and processed, it needs to be tested to ensure that the product is qualified. After searching, the Chinese patent application number is: CN201820813407.X discloses a computer display screen strength test device, including a body, the top of the body is fixedly sleeved with a long rod, one end of the long rod passes through the body and extends to the top of the body, the number of the long rods is two, and a cross bar located above the body is fixedly installed between the two long rods. By rotating the knob, the threaded rod drives the clamp rod to move downward through the bearing, so that the bottom of the clamp rod cooperates with the top of the short rod to make the display screen more stable. When the display screen is fixed between the clamp rod and the top of the top block, the top of the top block will limit the bottom of the display screen. When the pressure block squeezes the display screen, the display screen is more easily damaged, thereby obtaining more accurate data, thereby preventing loosening when testing the strength of the display screen, thereby causing errors in data analysis, and increasing the practicality of the test device.

[0004] The above technical solution still has defects. When performing strength testing on a display screen, only a single-point pressure test can be performed. When additional points need to be tested, the position of the display screen needs to be adjusted, which is inconvenient to use and reduces the test efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide an LCD liquid crystal display screen testing device. The device has a simple structure and is easy to use. Through the cooperation of a hydraulic cylinder and a detection head, a pressure test can be performed on a single point on the surface of the display screen. At the same time, through the cooperation of a screw rod and a motor, the detection head can be displaced to perform both multi-point testing and scratch testing. The LCD liquid crystal display screen can be tested more comprehensively, and the test results are more accurate, thereby ensuring that the product has good quality, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A LCD liquid crystal display screen testing device, comprising:

[0008] Main structure;

[0009] Strength testing structure;

[0010] and a fixing mechanism for fixing an LCD liquid crystal display screen;

[0011] Wherein, the main structure includes a bottom plate, a bracket arranged on the bottom plate and a top plate on the top of the bracket;

[0012] The strength testing structure includes a hydraulic cylinder mounted on the top plate and a detection head driven by the hydraulic cylinder;

[0013] The fixing mechanism includes two groups of bosses symmetrically arranged on the base plate, an adjusting screw and a bearing plate, the adjusting screw is threadedly mounted on the boss, a handle is welded to one end of the adjusting screw, and the other end of the adjusting screw is rotatably mounted on the bearing plate, and the bearing plate is arranged in an L shape.

[0014] Preferably, the lower end of the hydraulic rod of the hydraulic cylinder passes through the top plate and is fixedly connected to a lifting box, a screw is rotatably installed inside the lifting box, a motor is fixedly installed on one side outer wall of the lifting box, and the screw is driven by the motor.

[0015] Preferably, a slide is installed on the screw rod, a fixing sleeve is welded to the bottom of the slide, a slot is provided at the bottom of the fixing sleeve, the detection head is inserted into the slot and fixed by a pin rod, and pin holes are correspondingly provided on the fixing sleeve and the detection head.

[0016] Preferably, slide bars are symmetrically welded on both sides of the slide seat, and slide grooves are symmetrically opened on both side walls of the lifting box, and the slide bars are slidably inserted in the slide grooves.

[0017] Preferably, a bearing seat is embedded in the middle of the side wall of the bearing plate, and the end of the adjusting screw is inserted and fixed to the inner ring of the bearing of the bearing seat.

[0018] Preferably, two groups of limiting rods are symmetrically arranged on the side wall of the bearing plate, and the limiting rods are slidably inserted into the bosses.

[0019] Preferably, two groups of guide rods are symmetrically arranged on the top of the lifting box, and the guide rods are slidably inserted into the top plate.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model sets a strength testing mechanism including a hydraulic cylinder and a detection head on the top plate, the hydraulic cylinder drives a lifting box, a screw rod is installed in the lifting box, the screw rod is driven by a motor, and the detection head is installed in a fixed sleeve at the bottom of a slide seat on the screw rod. The device has a simple structure and is easy to use. The hydraulic cylinder cooperates with the detection head to perform pressure testing on a single point on the surface of the display screen. At the same time, the detection head can be displaced by cooperating with the screw rod and the motor to perform multi-point testing as well as scratch testing. The LCD display screen can be tested more comprehensively, so that the test result is more accurate, thereby ensuring that the product has good quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the lifting box of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the detection head of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the load-bearing plate of the utility model.

[0026] In the figure: 1. bottom plate; 2. bracket; 3. top plate; 4. hydraulic cylinder; 5. lifting box; 6. screw; 7. motor; 8. slide seat; 9. fixing sleeve; 10. detection head; 11. slide groove; 12. slide rod; 13. guide rod; 14. slot; 15. pin hole; 16. boss; 17. adjusting screw; 18. bearing plate; 19. bearing seat; 20. limit rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-4 , the utility model provides a technical solution:

[0029] A LCD liquid crystal display screen testing device, comprising:

[0030] The main structure includes a bottom plate 1, a bracket 2 disposed on the bottom plate 1, and a top plate 3 on the top of the bracket 2;

[0031] Strength testing structure;

[0032] The strength test structure includes a hydraulic cylinder 4 mounted on a top plate 3 and a detection head 10 driven by the hydraulic cylinder 4;

[0033] The lower end of the hydraulic rod of the hydraulic cylinder 4 penetrates the top plate 3 and is fixedly connected to the lifting box 5. A screw rod 6 is rotatably installed inside the lifting box 5. A motor 7 is fixedly installed on the outer wall of one side of the lifting box 5, and the screw rod 6 is driven by the motor 7. A slide 8 is installed on the screw rod 6. A fixed sleeve 9 is welded to the bottom of the slide 8. A slot 14 is provided at the bottom of the fixed sleeve 9. The detection head 10 is inserted into the inside of the slot 14 and fixed by a pin rod. Pin holes 15 are correspondingly provided on the fixed sleeve 9 and the detection head 10. Slide rods 12 are symmetrically welded on both sides of the slide 8. Slide grooves 11 are symmetrically provided on the two side walls of the lifting box 5. The slide rods 12 are slidably inserted into the inside of the slide grooves 11. Two sets of guide rods 13 are symmetrically provided on the top of the lifting box 5, and the guide rods 13 are slidably inserted into the top plate 3.

[0034] In actual use, the LCD screen is positioned by the fixing mechanism on the bottom plate 1, and the hydraulic cylinder 4 is started to drive the lifting box 5 to move downward until the detection head 10 contacts the surface of the screen and applies the test pressure, and then a single-point test can be performed.

[0035] When multi-point testing is required, the hydraulic cylinder 4 is started to lift the detection head 10, and the slide 8 on the screw rod 6 of the start motor 7 can drive the detection head 10 to move. After moving to the specified position, the hydraulic cylinder 4 is started again to make the detection head 10 contact the specified point, so as to perform a multi-point pressure test;

[0036] When a scratch test is required, the hydraulic cylinder 4 is started to drive the lifting box 5 to move downward until the detection head 10 contacts the display screen and applies appropriate pressure. At this time, the motor 7 is started to make the slide 8 drive the detection head 10 to move on the display screen, and the display screen can be scratch tested.

[0037] In order to ensure the accuracy of the test, a pressure sensor is installed on the L-shaped supporting plate 18 for supporting the display screen to accurately control the pressure applied to the display screen, which is common knowledge in the art and will not be elaborated here;

[0038] A displacement sensor is installed on the detection head 10 and works together with the pressure sensor to measure the displacement change of the display screen during the force application process, thereby evaluating the elasticity and deformation degree of the display screen. This is common knowledge in the art and will not be elaborated here.

[0039] In addition, by installing and fixing the detection head 10 and the fixing sleeve 9 through the pin rod, the detection head 10 can be quickly and conveniently installed and replaced. The detection end of the detection head 10 can be set to a wedge shape, a circle, etc. according to actual needs, so as to simulate different test scenarios.

[0040] A fixing mechanism for fixing an LCD display screen;

[0041] The fixing mechanism includes two groups of bosses 16, an adjusting screw 17 and a bearing plate 18 symmetrically arranged on the bottom plate 1. The adjusting screw 17 is threadedly mounted on the boss 16. A handle is welded to one end of the adjusting screw 17. The other end of the adjusting screw 17 is rotatably mounted on the bearing plate 18. The bearing plate 18 is arranged in an L shape. A bearing seat 19 is embedded in the middle of the side wall of the bearing plate 18. The end of the adjusting screw 17 is plugged and fixed to the inner ring of the bearing seat 19. Two groups of limiting rods 20 are symmetrically arranged on the side wall of the bearing plate 18. The limiting rods 20 are slidably plugged into the boss 16.

[0042] By setting a fixing mechanism including a convex strip, an adjusting screw 17 and a bearing plate 18 on the bottom plate 1, in actual use, the two sides of the display screen are placed on two sets of L-shaped bearing plates 18 for bearing, and then the strength testing mechanism is started for testing;

[0043] In addition, the distance between the two groups of supporting plates 18 can be adjusted by the handle, so that it can be flexibly adapted according to the size of the LCD liquid crystal display screen, which greatly improves the applicability of the device and has a high practical value.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A LCD liquid crystal display screen testing device, characterized in that: include: Main structure; Strength testing structure; and a fixing mechanism for fixing an LCD liquid crystal display screen; The main structure comprises a bottom plate (1), a bracket (2) arranged on the bottom plate (1), and a top plate (3) on top of the bracket (2); The strength testing structure comprises a hydraulic cylinder (4) installed on a top plate (3) and a detection head (10) driven by the hydraulic cylinder (4); The fixing mechanism comprises two groups of bosses (16) symmetrically arranged on the bottom plate (1), an adjusting screw (17) and a bearing plate (18); the adjusting screw (17) is threadedly mounted on the boss (16); a handle is welded to one end of the adjusting screw (17); the other end of the adjusting screw (17) is rotatably mounted on the bearing plate (18); and the bearing plate (18) is arranged in an L shape.

2. The LCD display screen testing device according to claim 1, characterized in that: The lower end of the hydraulic rod of the hydraulic cylinder (4) passes through the top plate (3) and is fixedly connected to a lifting box (5); a screw rod (6) is rotatably mounted inside the lifting box (5); a motor (7) is fixedly mounted on an outer wall of one side of the lifting box (5); and the screw rod (6) is driven by the motor (7).

3. The LCD display screen testing device according to claim 2, characterized in that: A slide seat (8) is mounted on the screw rod (6), a fixing sleeve (9) is welded to the bottom of the slide seat (8), a slot (14) is arranged at the bottom of the fixing sleeve (9), the detection head (10) is inserted into the slot (14) and fixed by a pin rod, and pin holes (15) are correspondingly provided on the fixing sleeve (9) and the detection head (10).

4. The LCD display screen testing device according to claim 3, characterized in that: Slide rods (12) are symmetrically welded on both sides of the slide seat (8), and slide grooves (11) are symmetrically opened on both side walls of the lifting box (5), and the slide rods (12) are slidably inserted into the inside of the slide grooves (11).

5. The LCD display screen testing device according to claim 1, characterized in that: A bearing seat (19) is embedded in the middle of the side wall of the bearing plate (18), and the end of the adjusting screw (17) is plugged and fixed to the inner ring of the bearing of the bearing seat (19).

6. The LCD display screen testing device according to claim 1, characterized in that: Two groups of limiting rods (20) are symmetrically arranged on the side wall of the bearing plate (18), and the limiting rods (20) are slidably inserted into the boss (16).

7. The LCD display screen testing device according to claim 2, characterized in that: Two groups of guide rods (13) are symmetrically arranged on the top of the lifting box (5), and the guide rods (13) are slidably plugged into the top plate (3).

Images