Compression resistance detection device for LCD (Liquid Crystal Display) screen

Abstract

The utility model relates to the technical field of compression resistance detection devices, and discloses a compression resistance detection device for an LCD (liquid crystal display) screen, which solves the problems that the existing compression resistance detection device needs to be divided into two steps for clamping and detecting the LCD screen and cannot be synchronously controlled, the operation procedures are increased, and the detection efficiency is reduced. A supporting frame is fixedly installed on one side of the top of the workbench, a hydraulic cylinder is fixedly installed on the top of the supporting frame, two containing frames are fixedly installed in the middle of the top of the workbench, lower cushion plates are fixedly installed on the tops of the two containing frames, and upper cushion plates are arranged above the two lower cushion plates. Protective pads are fixedly installed on the sides, close to each other, of the two upper base plates and the two lower base plates, the transmission end of the hydraulic cylinder extends into the supporting frame and is fixedly provided with a pressing head, and a control panel is fixedly installed on the front portion of the workbench. The pressure resistance detection device can synchronously clamp and detect the LCD screen, so that the operation procedures are reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of pressure resistance testing devices, specifically a pressure resistance testing device for an LCD screen. Background Technology

[0002] The LCD screen pressure resistance testing device is a specialized device used to evaluate the pressure resistance performance of LCD screens. It can simulate pressure loading from different directions and rates, and monitor the pressure value and screen deformation in real time to assess the structural strength, deformation characteristics, and potential damage risk of the screen under pressure. This device is widely used in consumer electronics, automotive displays, aerospace, and other fields. In the consumer electronics field, it can ensure the reliability of screens in devices such as mobile phones and computers. In the automotive display field, it can ensure the pressure resistance performance of in-vehicle screens in complex environments. In the aerospace field, it rigorously tests the pressure resistance performance of high-precision display devices to meet the safety and stability requirements under extreme usage conditions.

[0003] Existing patent (publication number: CN222719779U) discloses a pressure resistance testing device for LCD screens. This device provides stable clamping when performing pressure resistance testing on LCD screens, and the clamping range can be adjusted according to the specific size of the LCD screen, thereby improving the efficiency of the device in testing LCD screens. However, the clamping and testing of the LCD screen by this pressure resistance testing device need to be divided into two steps, which cannot be controlled simultaneously, thus increasing the operation steps and reducing the testing efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a pressure resistance testing device for LCD screens, which effectively solves the problem that the existing pressure resistance testing devices require two separate steps for clamping and testing the LCD screen, and cannot be controlled synchronously, which increases the operation process and reduces the testing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure resistance testing device for an LCD screen, comprising a workbench, a support frame fixedly installed on one side of the top of the workbench, a hydraulic cylinder fixedly installed on the top of the support frame, two placement frames fixedly installed in the middle of the top of the workbench, a lower pad fixedly installed on the top of each of the two placement frames, an upper pad provided above each of the two lower pads, and protective pads fixedly installed on the sides of the two upper pads and the two lower pads that are close to each other, the transmission end of the hydraulic cylinder extending into the interior of the support frame and fixedly installed with a pressure head, a control panel fixedly installed at the front of the workbench, a pressure sensor fixedly installed at the bottom of the pressure head, the pressure sensor being electrically connected to the control panel via a flexible wire, a transmission assembly provided on one side of the pressure head, the transmission assembly being connected to the two upper pads in a transmission manner, when the hydraulic cylinder drives the pressure head to move downward, it outputs power to the two upper pads through the transmission assembly, causing the two upper pads to move downward to fix the LCD screen, and causing the pressure head to press down synchronously to test the LCD screen.

[0006] Preferably, the transmission assembly includes a support arm, which is fixedly installed on one side of the pressure head. A connecting rod is fixedly installed at one end of the support arm, and a transmission rack is fixedly installed at the bottom of the connecting rod. The lower part of the transmission rack extends into the interior of the worktable, and a transmission pinion is meshed with one side of the transmission rack. Both ends of the transmission pinion are rotatably connected to the inner bottom of the worktable through positioning seats.

[0007] Preferably, the lower part of the transmission gear column is meshed with a push rack, a connecting block is fixedly installed at one end of the lower part of the push rack, a limit slide is fixedly installed at the bottom of the connecting block, a limit groove is opened in the middle of the bottom of the worktable, and the limit slide is slidably installed inside the limit groove.

[0008] Preferably, one end of the push rack is closely attached to the connecting frame, and four insert rods are fixedly installed on the top of the connecting frame. The four insert rods are movably inserted into the upper part of the worktable. A connecting plate is fixedly installed between the tops of two insert rods on the same side. A return spring is sleeved on the upper part of the surface of each of the four insert rods, and the two ends of the four return springs are fixedly connected to the connecting plate and the worktable, respectively.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the operator places the LCD screen on two lower pads, and then starts the hydraulic cylinder to drive the pressure head to move down. When the pressure head moves down, it drives the connecting rod to move down through the support arm. When the connecting rod moves down, it drives the transmission rack to move down. When the transmission rack moves down, it drives the transmission gear column to rotate along the two positioning seats. When the transmission gear column rotates, it drives the pushing rack to move. When the pushing rack moves, it drives the limiting slide bar to slide inside the limiting slide groove through the connecting block, which increases the stability of the pushing rack when it moves.

[0010] When the pushing rack moves, it compresses the connecting frame downwards. This downward movement of the connecting frame, via four insert rods, causes two connecting plates to move downwards, simultaneously compressing four return springs. These return springs provide the two connecting plates with elastic restoring capabilities. As the two connecting plates move downwards, they also cause two upper pads to move downwards, pressing firmly against the LCD screen. Four protective pads effectively protect the LCD screen. Simultaneously, the hydraulic cylinder continuously drives the pressure head to press down on the LCD screen. Pressure sensors detect the pressure data and transmit it to the control panel for display. Because the front end of the pushing rack is inclined and the rear end is horizontal, the pushing rack can continue to move after compressing the two upper pads, maintaining downward pressure on them. This allows for synchronous fixing and pressure detection. This pressure testing device can simultaneously clamp and test the LCD screen, reducing operational steps and improving testing efficiency. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0012] In the attached diagram:

[0013] Figure 1 This is a schematic diagram of the pressure resistance testing device for the LCD screen of this utility model. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the internal structure of the workbench of this utility model. Figure 1 ;

[0015] Figure 3 This is a schematic diagram of the internal structure of the workbench of this utility model. Figure 2 ;

[0016] Figure 4 This is a schematic diagram of the pressure resistance testing device for the LCD screen of this utility model. Figure 2 ;

[0017] In the diagram: 1. Workbench; 2. Support frame; 3. Hydraulic cylinder; 4. Placement rack; 5. Upper pad; 6. Protective pad; 7. Support arm; 8. Transmission rack; 9. Pressure head; 10. Transmission pinion; 11. Positioning seat; 12. Push rack; 13. Limiting slide bar; 14. Limiting slide groove; 15. Connecting frame; 16. Insert rod; 17. Connecting plate; 18. Return spring; 19. Lower pad; 20. Control panel; 21. Connecting rod; 22. Connecting block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Depend on Figures 1 to 4 The present invention includes a workbench 1, a support frame 2 fixedly installed on one side of the top of the workbench 1, a hydraulic cylinder 3 fixedly installed on the top of the support frame 2, two placement racks 4 fixedly installed in the middle of the top of the workbench 1, a lower pad 19 fixedly installed on the top of each of the two placement racks 4, an upper pad 5 provided above each of the two lower pads 19, and protective pads 6 fixedly installed on the sides of the two upper pads 5 and the two lower pads 19 that are close to each other. The transmission end of the hydraulic cylinder 3 extends into the interior of the support frame 2 and a pressure head 9 is fixedly installed thereon. A control panel 20 is fixedly installed at the front of the workbench 1, and a pressure sensor is fixedly installed at the bottom of the pressure head 9. The pressure sensor is electrically connected to the control panel 20 through a flexible wire. A transmission component is provided on one side of the pressure head 9. The transmission component is connected to the two upper pads 5 through a transmission mechanism. When the hydraulic cylinder 3 drives the pressure head 9 to move downward, it will output power to the two upper pads 5 through the transmission component, so that the two upper pads 5 move downward to fix the LCD screen, and the pressure head 9 presses down synchronously to detect the LCD screen.

[0020] In use, the operator places the LCD screen on the two lower pads 19, and then activates the hydraulic cylinder 3 to move the pressure head 9 downward. As the pressure head 9 moves downward, it drives the two upper pads 5 to move downward through the transmission component to press the LCD screen. The four protective pads 6 can effectively protect the LCD screen. At the same time, the hydraulic cylinder 3 will continuously drive the pressure head 9 to press down on the LCD screen. The pressure sensor will detect the pressure data and transmit it to the control panel 20 for display. This allows the pressure resistance testing device to clamp and test the LCD screen simultaneously, thereby reducing the operation steps and improving the testing efficiency.

[0021] The transmission assembly includes a support arm 7, which is fixedly installed on one side of the pressure head 9. A connecting rod 21 is fixedly installed at one end of the support arm 7, and a transmission rack 8 is fixedly installed at the bottom of the connecting rod 21. The lower part of the transmission rack 8 extends into the interior of the worktable 1, and a transmission pinion 10 is meshed on one side of the transmission rack 8. Both ends of the transmission pinion 10 are rotatably connected to the inner bottom of the worktable 1 through a positioning seat 11.

[0022] The lower part of the transmission gear 10 is meshed with a push rack 12. A connecting block 22 is fixedly installed at one end of the lower part of the push rack 12. A limit slide 13 is fixedly installed at the bottom of the connecting block 22. A limit slide groove 14 is opened in the middle of the bottom of the worktable 1. The limit slide 13 is slidably installed inside the limit slide groove 14.

[0023] The hydraulic cylinder 3 is activated to drive the pressure head 9 to move downward. When the pressure head 9 moves downward, it drives the connecting rod 21 to move downward through the support arm 7. When the connecting rod 21 moves downward, it drives the transmission rack 8 to move downward. When the transmission rack 8 moves downward, it drives the transmission pinion 10 to rotate along the two positioning seats 11. When the transmission pinion 10 rotates, it drives the pushing rack 12 to move. When the pushing rack 12 moves, it drives the limiting slide 13 to slide inside the limiting slide groove 14 through the connecting block 22, which increases the stability of the pushing rack 12 when it moves.

[0024] One end of the push rack 12 is closely attached to the connecting frame 15. Four insert rods 16 are fixedly installed on the top of the connecting frame 15, and the four insert rods 16 are movably inserted into the upper part of the worktable 1. A connecting plate 17 is fixedly installed between the tops of two insert rods 16 on the same side. A return spring 18 is sleeved on the upper part of the surface of each of the four insert rods 16. The two ends of the four return springs 18 are fixedly connected to the connecting plate 17 and the worktable 1 respectively.

[0025] When the push rack 12 moves, it will squeeze the connecting frame 15 to move down. When the connecting frame 15 moves down, it will drive the two connecting plates 17 to move down through the four insert rods 16 and squeeze the four return springs 18 at the same time. The four return springs 18 enable the two connecting plates 17 to have the ability to elastically return. When the two connecting plates 17 move down, they will drive the two upper pads 5 to move down and press the LCD screen.

[0026] Because the front end of the pushing rack 12 is inclined and the rear end is horizontal, the pushing rack 12 can continue to move after the two upper pads 5 are pressed down, and maintain the downward pressure of the two upper pads 5, thereby achieving synchronous fixing and pressure detection.

Claims

1. A pressure resistance testing device for an LCD screen, comprising a worktable (1), characterized in that: A support frame (2) is fixedly installed on one side of the top of the workbench (1). A hydraulic cylinder (3) is fixedly installed on the top of the support frame (2). Two placement racks (4) are fixedly installed in the middle of the top of the workbench (1). A lower pad (19) is fixedly installed on the top of each of the two placement racks (4). An upper pad (5) is provided above each of the two lower pads (19). A protective pad (6) is fixedly installed on the side of the two upper pads (5) and the two lower pads (19) that are close to each other. The transmission end of the hydraulic cylinder (3) extends into the interior of the support frame (2) and is fixed. A pressure head (9) is installed, and a control panel (20) is fixedly installed at the front of the workbench (1). A pressure sensor is fixedly installed at the bottom of the pressure head (9). The pressure sensor is electrically connected to the control panel (20) via a flexible wire. A transmission assembly is provided on one side of the pressure head (9). The transmission assembly is connected to two upper pads (5). When the hydraulic cylinder (3) drives the pressure head (9) to move down, it will output power to the two upper pads (5) through the transmission assembly, so that the two upper pads (5) move down to fix the LCD screen, and the pressure head (9) presses down synchronously to detect the LCD screen.

2. The pressure resistance testing device for an LCD screen according to claim 1, characterized in that: The transmission assembly includes a support arm (7), which is fixedly installed on one side of the pressure head (9). A connecting rod (21) is fixedly installed at one end of the support arm (7). A transmission rack (8) is fixedly installed at the bottom of the connecting rod (21). The lower part of the transmission rack (8) extends into the interior of the worktable (1), and a transmission pinion (10) is meshed on one side of the transmission rack (8). Both ends of the transmission pinion (10) are rotatably connected to the inner bottom of the worktable (1) through a positioning seat (11).

3. The pressure resistance testing device for an LCD screen according to claim 2, characterized in that: The lower part of the transmission gear column (10) is meshed with a push rack (12), and a connecting block (22) is fixedly installed at one end of the lower part of the push rack (12). A limiting slide (13) is fixedly installed at the bottom of the connecting block (22). A limiting groove (14) is opened in the middle of the bottom of the worktable (1), and the limiting slide (13) is slidably installed inside the limiting groove (14).

4. The pressure resistance testing device for an LCD screen according to claim 2, characterized in that: One end of the push rack (12) is closely attached to the connecting frame (15). Four insert rods (16) are fixedly installed on the top of the connecting frame (15), and the four insert rods (16) are respectively movably inserted into the upper part of the workbench (1). A connecting plate (17) is fixedly installed between the tops of two insert rods (16) on the same side. A return spring (18) is sleeved on the upper part of the surface of each of the four insert rods (16). The two ends of the four return springs (18) are respectively fixedly connected to the connecting plate (17) and the workbench (1).

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