Liquid crystal display screen convenient to disassemble and assemble

Abstract

The liquid crystal display screen convenient to disassemble and assemble comprises a display screen body, a mounting plate is arranged on the rear side of the display screen body, a quick assembly mechanism is arranged on the mounting plate, and the quick assembly mechanism comprises a fixing frame, a fixing hole, a fixing sleeve, a fixing rod, a clamping groove, a sliding block, a clamping block, a connecting block, an arc-shaped plate, a tension spring and a locking mechanism. The two fixing frames are installed on the installation plate, the multiple fixing holes are distributed in the fixing frames, the fixing sleeves are installed on the fixing frames, the fixing rods are installed on the rear side of the display screen body, and the clamping grooves are formed in the outer walls of the fixing rods. The clamping blocks are clamped in the clamping grooves through the elastic force of the tension springs, rapid fixing is achieved, in addition, the fixing holes comprise the round holes and the strip-shaped holes, the requirements of different installation positions can be met, and the installation flexibility is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, and more specifically, it relates to a liquid crystal display that is easy to assemble and disassemble. Background Technology

[0002] In modern offices, classrooms, and home entertainment settings, LCD screens have become indispensable display devices. However, because screens typically require mounting on brackets or walls, traditional installation methods often rely on screws, nuts, and other connectors. This method requires tools, is cumbersome, and time-consuming to secure the screen. Once installed, adjusting the screen's position or replacing the device necessitates repeating these tedious steps, which is both time-consuming and can easily damage the screen or bracket. This situation clearly fails to meet users' actual needs for quick installation and adjustment, especially in high-frequency use or frequent relocation scenarios, where traditional installation methods prove particularly inconvenient.

[0003] Furthermore, in application scenarios such as exhibitions and conference presentations where displays need to be frequently replaced or moved, the importance of quick disassembly and assembly is even more prominent. Traditional installation methods cannot achieve efficient disassembly and assembly of displays. The disassembly and assembly process not only consumes manpower and time, but may also lead to insufficient stability of the equipment and potential safety hazards. At the same time, frequent disassembly and assembly operations can easily lead to thread wear or even damage to connectors, reducing the service life of the equipment. These problems have greatly restricted the flexible use of displays. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a liquid crystal display screen that is easy to disassemble and assemble, so as to solve the technical problem mentioned in the background art that the traditional installation method often relies on screws, nuts and other connecting parts, which requires the use of tools and is relatively cumbersome during the installation process.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a liquid crystal display screen that is easy to assemble and disassemble, comprising a display screen body, a mounting plate provided on the rear side of the display screen body, and a quick-assembly mechanism provided on the mounting plate. The quick-assembly mechanism includes a fixing frame, fixing holes, fixing sleeves, fixing rods, slots, sliding blocks, locking blocks, connecting blocks, arc plates, tension springs, and a locking mechanism. Two sets of fixing frames are provided and mounted on the mounting plate, multiple sets of fixing holes are provided and distributed on the fixing frames, fixing sleeves are mounted on the fixing frames, fixing rods are mounted on the rear side of the display screen body, and slots are provided on the fixing rods. The outer wall has multiple sets of sliding blocks that slide on the fixed sleeve. A locking block is installed at the bottom of the multiple sets of sliding blocks, a connecting block is installed at the top of the multiple sets of sliding blocks, and an arc-shaped plate is installed at the bottom of the multiple sets of connecting blocks. Multiple sets of tension springs are installed on the inner side of the multiple sets of arc-shaped plates and connected to the fixed sleeve. The locking mechanism includes a lock hole, a pull plate, a locking rod, an inner ring, and a push spring. The lock hole is located on the multiple sets of locking blocks, the pull plate is located at the top of the fixed sleeve, multiple sets of locking rods are installed on the bottom surface of the pull plate and slidably connected to the fixed sleeve, the inner ring is installed on the outer wall of the multiple sets of locking rods, and multiple sets of push springs are installed on the top surface of the inner ring and connected to the fixed sleeve.

[0008] The present invention is further configured such that the multiple sets of fixing holes are respectively provided with round holes and strip holes. This design not only increases the selectivity of fixing points, but also adapts to the needs of different installation environments, and improves the flexibility and compatibility of installation.

[0009] The present invention is further configured such that a hexagonal block is provided at the top of the fixing rod, and an adapter groove is provided on the inner top surface of the fixing sleeve. The adapter groove engages with the hexagonal block. The engagement of the hexagonal block and the adapter groove ensures the accurate alignment and stability of the fixing rod when it is inserted into the fixing sleeve, avoids offset during the installation process, and improves the reliability and safety of the installation.

[0010] The present invention is further configured such that each of the multiple sets of sliding blocks has a slide bar on its top surface, and each of the multiple sets of slide bars is slidably connected to the fixed sleeve. The slidable connection between the slide bar and the fixed sleeve ensures the smooth movement of the sliding block within the fixed sleeve, improves the smoothness and reliability of the quick-release mechanism, and avoids jamming or deviation during the sliding process.

[0011] The present invention is further configured such that the outer wall of the fixed sleeve is provided with a quick-release mechanism, the quick-release mechanism including a rotating sleeve, an unlocking sleeve, an inclined plate, an arc groove, a sliding rod, and a groove. The rotating sleeve is rotatably mounted on the outer wall of the fixed sleeve, the unlocking sleeve is mounted on the bottom surface of the rotating sleeve, multiple sets of inclined plates are mounted on the outer wall of the unlocking sleeve, the arc groove is located at the connection between the multiple sets of inclined plates and the unlocking sleeve, the sliding rod is mounted on the top surface of the multiple sets of connecting blocks and is slidably connected to the arc groove, and the groove is located on the outside of the multiple sets of inclined plates. This design allows the screen to be disassembled simply by rotating the rotating sleeve, the unlocking sleeve causing the inclined plate to rotate, the sliding rod sliding along the arc groove into the groove, and the sliding rod causing the connecting block and the arc plate to move outward, thereby disengaging the locking block from the locking groove, achieving quick unlocking and improving the convenience and efficiency of disassembly.

[0012] The present invention is further provided that a pull rod is installed on the top surface of the pull plate. The pull rod facilitates the user's operation of the pull plate. The pull rod makes it easier to pull the pull plate, so that the locking rod can be disengaged from the lock hole, thereby unlocking the block and improving the convenience and comfort of operation.

[0013] This utility model is further configured such that a lifting mechanism is provided at the bottom of the mounting plate. The lifting mechanism includes a support rod, a support sleeve, positioning holes, a movable block, a connecting ring, a return spring, and a positioning bolt. The support rod is installed on the outside of the mounting plate, and the support sleeve slides on the outer wall of the support rod. Multiple sets of positioning holes are respectively provided on the outer walls of the support rod and the support sleeve. The movable block slides in the positioning holes provided on the support rod. The connecting ring is installed at the bottom of the movable block. The two ends of the return spring are respectively connected to the inner wall of the support rod and the connecting ring. The positioning bolt is inserted into the positioning holes provided on the support sleeve and the support rod. This design allows users to easily adjust the height of the display screen. By manually adjusting the position of the support sleeve and overcoming the force of the return spring, the movable block is pushed into the support rod. After each adjustment until the positioning hole is aligned, the elastic return of the return spring pulls the movable block into the positioning hole for positioning. After adjustment, the positioning bolt is inserted into the new positioning hole to lock the position of the support sleeve, ensuring that the display screen is stable and reliable in the adjusted position.

[0014] The present invention is further configured such that the lifting mechanism is provided with two sets mounted on the mounting plate, and the bottom end of the two sets of support sleeves is provided with a movable seat. The design of the two sets of lifting mechanisms makes the display screen more stable when adjusting the height, avoids the shaking caused by single-point support, and improves the stability and safety of the adjustment process. The setting of the movable seat further enhances the mobility of the support sleeve, making the display screen more smoothly adjusted in height.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a liquid crystal display screen that is easy to install and disassemble, and has the following beneficial effects:

[0017] 1. The quick-installation mechanism significantly improves the installation efficiency of the LCD screen. The fixing rod can be quickly inserted into the fixing sleeve, and the locking block is engaged in the slot by the elastic force of the tension spring, achieving quick fixation. In addition, the fixing holes include round holes and strip holes, which can adapt to the needs of different installation positions and increase the flexibility of installation. The top of the fixing rod is equipped with a hexagonal block, and the top surface of the fixing sleeve is equipped with an adapter groove. The engagement of the hexagonal block and the adapter groove ensures the stability and alignment of the fixing rod when it is inserted into the fixing sleeve, avoiding displacement during the installation process.

[0018] 2. The design of the locking mechanism further improves the reliability and safety of the quick-release mechanism. After the card block is engaged in the slot, the pull plate drives the locking rod to insert into the lock hole on the card block, thereby locking the card block and preventing it from loosening due to external force or vibration during use. When it is necessary to disassemble the display screen, simply pull the pull plate, the locking rod will exit from the lock hole, and the card block can quickly disengage from the slot under the action of the tension spring, thus achieving quick disassembly.

[0019] 3. The quick-release mechanism design makes the disassembly of the LCD screen more convenient. When it is necessary to disassemble the screen, simply rotate the rotating sleeve, the unlocking sleeve drives the inclined plate to rotate, the slide rod slides along the arc groove into the groove, the slide rod drives the connecting block and the arc plate to move outward, and the locking block disengages from the slot, realizing quick unlocking. At the same time, the top surface of the sliding block is equipped with a slide bar, which slides in connection with the fixed sleeve, ensuring the stable sliding of the sliding block in the fixed sleeve and improving the smoothness of the disassembly process.

[0020] 4. The lifting mechanism design makes the height adjustment of the LCD screen more flexible and convenient. When the height needs to be adjusted, pull out the positioning bolt, and the support sleeve slides along the support rod. By manually adjusting the position of the support sleeve and overcoming the force of the return spring, the movable block is pushed into the support rod. After each adjustment until the positioning hole is aligned, the elastic return of the return spring pulls the movable block into the positioning hole for positioning. After the adjustment is completed, insert the positioning bolt into the new positioning hole to lock the position of the support sleeve and ensure that the display screen is stable and reliable in the adjusted position. In addition, the bottom of the support sleeve is equipped with a movable seat, which makes the display screen more stable when adjusting the height and avoids shaking caused by the unstable sliding of the support sleeve. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a liquid crystal display screen that is easy to assemble and disassemble according to this utility model;

[0022] Figure 2 This is a schematic diagram of the mounting plate in this utility model;

[0023] Figure 3 This is a cross-sectional view of the quick-assembly mechanism in this utility model;

[0024] Figure 4This is a cross-sectional structural diagram of the locking mechanism and the quick-release mechanism in this utility model;

[0025] Figure 5 This is a cross-sectional view of the lifting mechanism in this utility model.

[0026] In the diagram: 1. Display screen body; 2. Mounting plate; 3. Fixing bracket; 4. Fixing hole; 5. Fixing sleeve; 6. Fixing rod; 7. Slot; 8. Sliding block; 9. Locking block; 10. Connecting block; 11. Arc plate; 12. Tension spring; 13. Locking hole; 14. Pull plate; 15. Locking rod; 16. Inner ring; 17. Push spring; 18. Hexagonal block; 19. Adaptor groove; 20. Sliding bar; 21. Rotating sleeve; 22. Unlocking sleeve; 23. Inclined plate; 24. Arc groove; 25. Sliding rod; 26. Groove; 27. Pull rod; 28. Support rod; 29. ​​Support sleeve; 30. Positioning hole; 31. Movable block; 32. Connecting ring; 33. Return spring; 34. Positioning bolt; 35. Moving seat. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5A liquid crystal display screen that is easy to install and disassemble includes a display screen body 1, a mounting plate 2 on the rear side of the display screen body 1, and a quick-installation mechanism on the mounting plate 2. The quick-installation mechanism includes a fixing frame 3, fixing holes 4, fixing sleeves 5, fixing rods 6, slots 7, sliding blocks 8, locking blocks 9, connecting blocks 10, an arc plate 11, a tension spring 12, and a locking mechanism. The fixing frame 3 has two sets mounted on the mounting plate 2, the fixing holes 4 have multiple sets distributed on the fixing frame 3, the fixing sleeves 5 are mounted on the fixing frame 3, the fixing rods 6 are mounted on the rear side of the display screen body 1, the slots 7 are located on the outer wall of the fixing rods 6, the sliding blocks 8 have multiple sets sliding on the fixing sleeves 5, and the locking blocks 9... 9 is installed at the bottom of multiple sets of sliding blocks 8, 10 is installed at the top of multiple sets of sliding blocks 8, 11 is installed at the bottom of multiple sets of connecting blocks 10, and multiple sets of tension springs 12 are installed on the inner side of multiple sets of arc plates 11 and connected to the fixed sleeve 5. The locking mechanism includes a lock hole 13, a pull plate 14, a locking rod 15, an inner ring 16 and a push spring 17. The lock hole 13 is set on multiple sets of locking blocks 9, the pull plate 14 is set at the top of the fixed sleeve 5, multiple sets of locking rods 15 are installed on the bottom surface of the pull plate 14 and are slidably connected to the fixed sleeve 5, the inner ring 16 is installed on the outer wall of multiple sets of locking rods 15, and multiple sets of push springs 17 are installed on the top surface of the inner ring 16 and connected to the fixed sleeve 5.

[0031] The multiple sets of fixing holes 4 are respectively provided with round holes and strip-shaped holes.

[0032] The top of the fixing rod 6 is provided with a hexagonal block 18, and the top surface of the fixing sleeve 5 is provided with an adapter groove 19, which engages with the hexagonal block 18.

[0033] Multiple sets of sliding blocks 8 are provided with sliding strips 20 on their top surfaces, and multiple sets of sliding strips 20 are slidably connected to the fixed sleeve 5.

[0034] The outer wall of the fixed sleeve 5 is provided with a quick-release mechanism, which includes a rotating sleeve 21, an unlocking sleeve 22, an inclined plate 23, an arc groove 24, a sliding rod 25, and a groove 26. The rotating sleeve 21 is rotatably installed on the outer wall of the fixed sleeve 5, the unlocking sleeve 22 is installed on the bottom surface of the rotating sleeve 21, multiple sets of inclined plates 23 are installed on the outer wall of the unlocking sleeve 22, the arc groove 24 is located at the connection between the multiple sets of inclined plates 23 and the unlocking sleeve 22, the sliding rod 25 is installed on the top surface of the multiple sets of connecting blocks 10 and is slidably connected with the arc groove 24, and the groove 26 is located on the outside of the multiple sets of inclined plates 23.

[0035] A tie rod 27 is installed on the top surface of the pull plate 14.

[0036] In this embodiment, when the display screen body 1 needs to be installed, pulling the pull rod 27 moves the pull plate 14, which in turn moves the locking rod 15 outward. Simultaneously, the inner ring 16 compresses multiple sets of push springs 17. At the same time, rotating the rotating sleeve 21 causes the unlocking sleeve 22 to rotate. As the unlocking sleeve 22 rotates, it slides along the guide of the arc groove 24 via the slide rod 25 to the outer wall of the inclined plate 23. The slide rod 25 slides into the groove 26 via the guide of the inclined plate 23 for limiting. Simultaneously, the slide rod 25 moves the connecting block 10 and the arc plate 11 outward, stretching the pull spring 12 and causing the movable block 31 to slide outward along the fixed sleeve 5 via the slide bar 20, pulling the locking block 9 outward. Then, the fixed... The rod 6 is inserted into the fixed sleeve 5 set on the fixed frame 3, and the hexagonal block 18 is engaged with the adapter slot 19. At this time, the slot 7 moves to the inside of the multiple sets of locking blocks 9. The rotating sleeve 21 is rotated in the opposite direction to drive the unlocking sleeve 22 to rotate, so that the sliding rod 25 is disengaged from the groove 26. Then, the arc plate 11 is pulled inward by the multiple sets of tension springs 12. The moving block 31 pushes the locking block 9 to engage in the slot 7. Then, the pull rod 27 is released, and the inner ring 16 is pushed by the multiple sets of push springs 17 to elastically reset. The inner ring 16 drives the multiple sets of locking rods 15 to slide and engage in the locking holes 13 set on the multiple sets of locking blocks 9, locking the multiple sets of locking blocks 9. The multiple sets of quick-installation mechanisms are operated in sequence to complete the quick installation of the display screen body 1.

[0037] Please see Figure 5 As one embodiment of the lifting mechanism: a lifting mechanism is provided at the bottom of the mounting plate 2. The lifting mechanism includes a support rod 28, a support sleeve 29, a positioning hole 30, a movable block 31, a connecting ring 32, a return spring 33, and a positioning bolt 34. The support rod 28 is installed on the outside of the mounting plate 2, and the support sleeve 29 slides on the outer wall of the support rod 28. Multiple sets of positioning holes 30 are provided on the outer walls of the support rod 28 and the support sleeve 29 respectively. The movable block 31 slides in the positioning hole 30 provided on the support rod 28. The connecting ring 32 is installed at the bottom of the movable block 31. The two ends of the return spring 33 are connected to the inner wall of the support rod 28 and the connecting ring 32 respectively. The positioning bolt 34 is inserted into the positioning hole 30 provided on the support sleeve 29 and the support rod 28.

[0038] The lifting mechanism is provided with two sets of supports mounted on the mounting plate 2, and the bottom of the two sets of support sleeves 29 are provided with movable seats 35.

[0039] More specifically, when the height of the display body 1 needs to be adjusted, the user pulls out the positioning bolt 34 and inserts it into the positioning hole 30 on the support rod 28 and the support sleeve 29 to lock the height. After the positioning bolt 34 is pulled out, the support sleeve 29 can slide along the support rod 28. By manually adjusting the position of the support sleeve 29 and overcoming the force of the return spring 33, the movable block 31 is pushed into the support rod 28 to change the height of the display. After each adjustment until the positioning hole 30 is aligned, the elastic return of the return spring 33 pulls the connecting block 10 to drive the movable block 31 to engage in the positioning hole 30 for positioning. After the adjustment is completed, the positioning bolt 34 is inserted into the new positioning hole 30 to lock the position of the support sleeve 29.

[0040] In summary, during the use or operation of the overall equipment: when the display screen body 1 needs to be installed, pulling the pull rod 27 moves the pull plate 14, which in turn moves the locking rod 15 outward. Simultaneously, the inner ring 16 compresses multiple sets of push springs 17. At the same time, rotating the rotating sleeve 21 causes the unlocking sleeve 22 to rotate. As the unlocking sleeve 22 rotates, it slides along the guide of the arc groove 24 via the slide rod 25 to the outer wall of the inclined plate 23. The slide rod 25 slides into the groove 26 for limiting, and simultaneously, the slide rod 25 moves the connecting block 10 and the arc plate 11 outward, stretching the pull spring 12. This causes the movable block 31 to slide outward along the fixed sleeve 5 via the slide bar 20, pulling the locking block 9 outward. Then, the fixing rod 6 is inserted into the fixing sleeve 5 set on the fixing frame 3, and the hexagonal block 18 is engaged with the adapter groove 19. At this time, the slot 7 moves to the inside of the multiple sets of locking blocks 9. The rotating sleeve 21 is rotated in the opposite direction to drive the unlocking sleeve 22 to rotate, so that the sliding rod 25 is disengaged from the groove 26. Then, the arc plate 11 is pulled inward by the multiple sets of tension springs 12. The locking block 9 is engaged in the slot 7 by the movable block 31. Then, the pull rod 27 is released. The inner ring 16 is pushed by the multiple sets of push springs 17 to elastically reset. The inner ring 16 drives the multiple sets of locking rods 15 to slide and engage in the locking holes 13 set on the multiple sets of locking blocks 9 to lock the multiple sets of locking blocks 9. The multiple sets of quick-installation mechanisms are operated in sequence to complete the quick installation of the display screen body 1.

[0041] When the height of the display body 1 needs to be adjusted, the user pulls out the positioning bolt 34 and inserts it into the positioning hole 30 on the support rod 28 and the support sleeve 29 to lock the height. After the positioning bolt 34 is pulled out, the support sleeve 29 can slide along the support rod 28. By manually adjusting the position of the support sleeve 29 and overcoming the force of the return spring 33, the movable block 31 is pushed into the support rod 28 to change the height of the display. After each adjustment until the positioning hole 30 is aligned, the elastic return of the return spring 33 pulls the connecting block 10 to drive the movable block 31 to engage in the positioning hole 30 for positioning. After the adjustment is completed, the positioning bolt 34 is inserted into the new positioning hole 30 to lock the position of the support sleeve 29.

[0042] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A liquid crystal display screen that is easy to install and remove, comprising a display screen body (1), characterized in that: The display screen body (1) is provided with a mounting plate (2) on the rear side. The mounting plate (2) is provided with a quick-installation mechanism. The quick-installation mechanism includes a fixing frame (3), fixing holes (4), fixing sleeves (5), fixing rods (6), slots (7), sliding blocks (8), locking blocks (9), connecting blocks (10), arc plates (11), tension springs (12), and a locking mechanism. The fixing frame (3) is provided with two sets mounted on the mounting plate (2). The fixing holes (4) are provided with multiple sets distributed on the fixing frame (3). The fixing sleeves (5) are mounted on the fixing frame (3). The fixing rods (6) are mounted on the rear side of the display screen body (1). The slots (7) are provided on the outer wall of the fixing rods (6). The sliding blocks (8) are provided with multiple sets sliding on the fixing sleeves (5). The locking blocks (9) are mounted on multiple sets of sliding... At the bottom of the moving block (8), the connecting block (10) is installed on the top of the multiple sets of sliding blocks (8), the arc plate (11) is installed at the bottom of the multiple sets of connecting blocks (10), and the tension spring (12) is provided in multiple sets installed on the inner side of the multiple sets of arc plates (11) and connected to the fixed sleeve (5). The locking mechanism includes a lock hole (13), a pull plate (14), a lock rod (15), an inner ring (16), and a push spring (17). The lock hole (13) is provided on the multiple sets of locking blocks (9), the pull plate (14) is provided at the top of the fixed sleeve (5), the lock rod (15) is provided in multiple sets installed on the bottom surface of the pull plate (14) and slidably connected to the fixed sleeve (5), the inner ring (16) is installed on the outer wall of the multiple sets of lock rods (15), and the push spring (17) is provided in multiple sets installed on the top surface of the inner ring (16) and connected to the fixed sleeve (5).

2. The easily detachable liquid crystal display screen according to claim 1, characterized in that: The multiple sets of fixing holes (4) are respectively provided with round holes and strip holes.

3. The easily detachable liquid crystal display screen according to claim 2, characterized in that: The top of the fixing rod (6) is provided with a hexagonal block (18), and the top surface of the fixing sleeve (5) is provided with an adapter groove (19), which engages with the hexagonal block (18).

4. The easily detachable liquid crystal display screen according to claim 3, characterized in that: multiple groups Each sliding block (8) has a sliding strip (20) on its top surface, and multiple sets of the sliding strips (20) are slidably connected to the fixed sleeve (5).

5. A liquid crystal display screen that is easy to install and disassemble according to claim 4, characterized in that: The outer wall of the fixed sleeve (5) is provided with a quick-release mechanism, which includes a rotating sleeve (21), an unlocking sleeve (22), an inclined plate (23), an arc groove (24), a sliding rod (25), and a groove (26). The rotating sleeve (21) is rotatably installed on the outer wall of the fixed sleeve (5), the unlocking sleeve (22) is installed on the bottom surface of the rotating sleeve (21), the inclined plate (23) is provided with multiple sets installed on the outer wall of the unlocking sleeve (22), the arc groove (24) is provided at the connection between the multiple sets of inclined plates (23) and the unlocking sleeve (22), the sliding rod (25) is installed on the top surface of the multiple sets of connecting blocks (10) and is slidably connected with the arc groove (24), and the groove (26) is provided on the outside of the multiple sets of inclined plates (23).

6. A liquid crystal display screen that is easy to install and disassemble according to claim 5, characterized in that: A pull rod (27) is installed on the top surface of the pull plate (14).

7. A liquid crystal display screen that is easy to install and disassemble according to claim 6, characterized in that: The mounting plate (2) is provided with a lifting mechanism at its bottom end. The lifting mechanism includes a support rod (28), a support sleeve (29), a positioning hole (30), a movable block (31), a connecting ring (32), a return spring (33), and a positioning bolt (34). The support rod (28) is installed on the outside of the mounting plate (2). The support sleeve (29) slides on the outer wall of the support rod (28). The positioning hole (30) is provided in multiple sets respectively on the outer walls of the support rod (28) and the support sleeve (29). The movable block (31) slides in the positioning hole (30) provided on the support rod (28). The connecting ring (32) is installed at the bottom end of the movable block (31). The two ends of the return spring (33) are respectively connected to the inner wall of the support rod (28) and the connecting ring (32). The positioning bolt (34) is inserted into the positioning hole (30) provided on the support sleeve (29) and the support rod (28).

8. A liquid crystal display screen that is easy to install and disassemble according to claim 7, characterized in that: The lifting mechanism is provided with two sets of support sleeves (2) mounted on the mounting plate (2), and the bottom of the two sets of support sleeves (29) are provided with movable seats (35).

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