Display screen for access control

Abstract

The display screen comprises a display screen body, a protection device is arranged on the outer side of the display screen body, the protection device comprises an installation frame, a protection plate and a fixing base, the installation frame is installed on one side of the fixing base, the protection plate is arranged on the inner side of the installation frame, and quick change devices are installed on the two sides of the installation frame. The quick-change device comprises a mounting sleeve, an outer sleeve, a guide groove, an inner sleeve, a clamping block, a clamping table, a control sleeve, a fixing plate, a guide block and a mounting rod, the outer sleeve is arranged on the outer side of the mounting sleeve, the guide groove is formed in the outer side of the outer sleeve, the inner sleeve is arranged on the inner side of the mounting sleeve, the clamping block is arranged on one side of the clamping table, the guide block is arranged on one side of the fixing plate, and a locking mechanism is arranged on the outer side of the mounting sleeve. The locking mechanism comprises a lock sleeve, a lock rod, a lock groove and a movable spring, the lock sleeve is arranged on the outer side of the mounting sleeve in a sleeving mode through threads, the lock rod is arranged on the side wall of the control sleeve, one end of the lock rod is connected with the control sleeve through the movable spring, and the lock groove is formed in the outer side of the mounting sleeve.

Description

Technical Field

[0001] This utility model relates to the field of door access control display technology, and more specifically, it relates to a door access control display. Background Technology

[0002] In the field of access control systems, the display screen serves as a crucial human-computer interaction interface, and its security and reliability directly affect the normal operation of the entire access control system. However, existing access control display screen designs suffer from numerous technical defects, which are mainly reflected in the following aspects:

[0003] First, the display screen itself is highly fragile. As a precision electronic component, the display screen is easily damaged when subjected to external impact. Once cracks or damage occur, the entire screen must be replaced, and its function cannot be restored through partial repair. Considering that access control display screens are usually installed in high-traffic areas such as building entrances and exits, their working environment is relatively harsh, and they are frequently exposed to various accidental collisions and external impacts. This structural fragility not only greatly shortens the lifespan of the display screen, but also imposes an economic burden of frequent replacements on the user, seriously affecting the normal operation and operating costs of the access control system.

[0004] Secondly, although some manufacturers have attempted to improve the protective performance of the display screen by adding a transparent protective plate inside the mounting frame, this improved design still has obvious shortcomings in practical applications. The most prominent problem is that the disassembly and assembly process of the mounting frame is too complicated, often requiring the use of professional tools. This cumbersome disassembly and assembly method not only increases the difficulty of daily maintenance, but also makes it impossible to replace the protective plate in a timely manner when it is found to be damaged or soiled. This design flaw seriously affects the maintenance efficiency of the equipment, increases maintenance costs, and may also affect the normal use of the display screen due to delayed replacement.

[0005] Furthermore, although some improved designs with quick-release mechanisms have emerged in the market, attempting to improve the replacement efficiency of protective panels by simplifying the disassembly and assembly process of the mounting frame, these designs still have serious flaws in practical applications. Specifically, while these quick-release structures may perform reasonably well in short-term use, their structural design is too simple and lacks necessary reinforcement and anti-loosening mechanisms. During long-term use, especially under frequent operation and external impact, these simple quick-release structures are prone to loosening or even falling off. This lack of structural stability not only leads to the failure of the protective function but may also cause the protective panel to fall off unexpectedly, thereby increasing safety hazards and posing greater risks to the user. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, the present invention provides a door disabling display screen to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a door access control display screen, comprising a display screen, characterized in that: a protective device is provided on the outer side of the display screen, the protective device comprising a mounting frame, a protective plate, and a fixing base, the mounting frame being detachably mounted on one side of the fixing base, the protective plate being made of transparent material and disposed inside the mounting frame, quick-change devices being installed on both sides of the mounting frame, the quick-change device comprising a mounting sleeve, an outer sleeve, a guide groove, an inner sleeve, a locking block, a locking platform, a control sleeve, a fixing plate, a guide block, and a mounting rod, the mounting sleeve being detachably fitted onto the outer side of the mounting rod, the outer sleeve being disposed outside the mounting sleeve, the guide groove being spirally formed on the outer side of the outer sleeve, and the inner sleeve being movably disposed on... Inside the mounting sleeve, the locking platform is fixedly installed inside the mounting sleeve, the locking block is movably installed on one side of the locking platform, the control sleeve is rotatably fitted on the outside of the mounting sleeve, the fixing plate is connected to one side of the control sleeve, a plurality of guide blocks are arranged in a spiral array on one side of the fixing plate, and the guide blocks are slidably installed in the guide groove, the mounting rod is fixedly connected to one side of the fixing seat, and a locking mechanism is provided on the outside of the mounting sleeve. The locking mechanism includes a locking sleeve, a locking rod, a locking groove and a movable spring. The locking sleeve is movably fitted on the outside of the mounting sleeve by threads, the locking rod is slidably installed on the side wall of the control sleeve, one end of the locking rod is connected to the outer wall of the control sleeve by the movable spring, and the other end of the locking rod is inserted into the locking groove. A plurality of locking grooves are opened on the outside of the mounting sleeve.

[0010] The present invention is further configured such that the side wall of the mounting sleeve is provided with a movable groove, a movable block is slidably provided in the movable groove, and the inner wall of the outer sleeve is fixedly connected to the outer wall of the inner sleeve through the movable block.

[0011] The present invention is further configured such that an installation groove is provided on the inner side of the installation rod, a push spring is movably provided in the installation groove, and one side of the locking block is connected to the inner wall of the installation groove through the push spring.

[0012] The present invention is further provided with a guide platform on one side of the card holder, and the guide platform is fixedly installed inside the mounting sleeve. The installation operation is made easier by the guide platform.

[0013] The present invention is further provided with a protective shell on one side of the fixed base, which protects the outside of the quick-change device.

[0014] The present invention is further configured such that slide rails are connected to both sides of the protective shell, and slide grooves are provided on the inner sides of the fixing seat, the mounting frame and the mounting shell. The slide grooves are adapted to the slide rails, and the slide rails and slide grooves play a guiding and limiting function for the protective shell.

[0015] The present invention is further configured such that a fixing frame is fixedly provided on one side of the fixing base, the display screen is detachably installed in the fixing frame, and the display screen is pressed between the mounting frame and the fixing frame. The setting of the fixing frame ensures the stable installation of the display screen and the protective plate.

[0016] The present invention is further configured such that a button is provided on one side of the fixed base, and a mounting shell is detachably provided on the outside of the button, and the mounting shell is detachably mounted on one side of the fixed base.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a door access control display screen, which has the following advantages:

[0019] 1. By installing a protective device on the outside of the display screen, in which the mounting frame and the fixing base are detachably connected, and the transparent protective plate is firmly pressed onto the surface of the display screen through the fixing frame, it not only effectively prevents the display screen from being damaged by external impacts, but also avoids scratches on the surface of the display screen, ensuring the clarity of the displayed content. When the protective plate is damaged, only the protective plate needs to be replaced. This overcomes the technical defects of traditional display screens that are fragile and require complete replacement, significantly extending the service life of the equipment and reducing maintenance costs.

[0020] 2. Through the set quick-change device, the mounting sleeve, outer sleeve, and inner sleeve are connected by the spiral engagement of the guide groove and guide block, and the clever engagement of the locking block and the locking platform, which realizes the quick disassembly and assembly of the mounting frame. When the protective plate needs to be replaced, the rotation of the control sleeve drives the entire mechanism to work together, so that the locking block can be smoothly disengaged from the locking platform under the action of the push spring, thereby conveniently completing the separation of the mounting sleeve and the mounting rod. This completely overcomes the problem of cumbersome disassembly and assembly requiring professional tools in the existing technology, and greatly improves maintenance efficiency.

[0021] 3. Through the locking mechanism, the locking sleeve is threaded to the mounting sleeve, and the locking rod is precisely engaged with the locking groove under the action of the movable spring, forming a reliable multi-locking structure. After the quick-change device is installed, the locking sleeve limits the locking rod, and the locking rod engaged with the locking groove restricts the control sleeve. This fundamentally solves the technical defects of existing quick-disassembly structures that are prone to loosening and falling off, ensuring the stability and safety of the entire protective device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a door access control display screen according to the present invention;

[0023] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention with the protective shell removed;

[0025] Figure 4 This is a cross-sectional structural diagram of the quick-change device and locking mechanism in this utility model;

[0026] Figure 5 for Figure 4 A magnified schematic diagram of the partial structure at point A in the middle;

[0027] Figure 6 This is a schematic diagram of the outer and inner sleeve parts in this utility model.

[0028] In the diagram: 1. Display screen; 2. Mounting frame; 3. Protective plate; 4. Fixing base; 5. Mounting sleeve; 6. Outer sleeve; 7. Guide groove; 8. Inner sleeve; 9. Locking block; 10. Locking platform; 11. Control sleeve; 12. Fixing plate; 13. Guide block; 14. Mounting rod; 15. Locking sleeve; 16. Locking rod; 17. Locking groove; 18. Movable spring; 19. Movable groove; 20. Movable block; 21. Mounting groove; 22. Push spring; 23. Guide platform; 24. Protective shell; 25. Slide rail; 26. Slide groove; 27. Fixing frame; 28. Button; 29. ​​Mounting shell. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Please see Figures 1-6A door access control display screen includes a display screen 1. A protective device is provided on the outer side of the display screen 1. The protective device includes a mounting frame 2, a protective plate 3, and a fixing base 4. The mounting frame 2 is detachably mounted on one side of the fixing base 4. The protective plate 3 is made of transparent material and is located inside the mounting frame 2. Quick-change devices are installed on both sides of the mounting frame 2. The quick-change devices include a mounting sleeve 5, an outer sleeve 6, a guide groove 7, an inner sleeve 8, a locking block 9, a locking platform 10, a control sleeve 11, a fixing plate 12, a guide block 13, and a mounting rod 14. The mounting sleeve 5 is detachably fitted onto the outer side of the mounting rod 14. The outer sleeve 6 is located on the outer side of the mounting sleeve 5. The guide groove 7 is spirally formed on the outer side of the outer sleeve 6. The inner sleeve 8 is movably located inside the mounting sleeve 5. The locking platform 10 is fixedly mounted on the mounting sleeve 5. Inside, the locking block 9 is movably mounted on one side of the locking platform 10, the control sleeve 11 is rotatably mounted on the outside of the mounting sleeve 5, the fixing plate 12 is connected to one side of the control sleeve 11, multiple guide blocks 13 are arranged in a spiral array on one side of the fixing plate 12, and the guide blocks 13 are slidably mounted in the guide groove 7, the mounting rod 14 is fixedly connected to one side of the fixing seat 4, and a locking mechanism is provided on the outside of the mounting sleeve 5. The locking mechanism includes a locking sleeve 15, a locking rod 16, a locking groove 17 and a movable spring 18. The locking sleeve 15 is movably mounted on the outside of the mounting sleeve 5 by threads, the locking rod 16 is slidably mounted on the side wall of the control sleeve 11, one end of the locking rod 16 is connected to the outer wall of the control sleeve 11 through the movable spring 18, and the other end of the locking rod 16 is inserted into the locking groove 17. Multiple locking grooves 17 are opened on the outside of the mounting sleeve 5.

[0033] The side wall of the mounting sleeve 5 has a movable groove 19, and a movable block 20 is slidably disposed in the movable groove 19. The inner wall of the outer sleeve 6 is fixedly connected to the outer wall of the inner sleeve 8 through the movable block 20.

[0034] An installation groove 21 is provided on the inner side of the mounting rod 14, and a push spring 22 is movably installed in the installation groove 21. One side of the locking block 9 is connected to the inner wall of the installation groove 21 through the push spring 22.

[0035] A guide platform 23 is provided on one side of the card holder 10, and the guide platform 23 is fixedly installed inside the mounting sleeve 5.

[0036] A protective shell 24 is provided on one side of the mounting base 4.

[0037] The protective shell 24 is connected to slide rails 25 on both sides. The mounting base 4, the mounting frame 2 and the inner side of the mounting shell 29 are all provided with slide grooves 26, which are adapted to slide rails 25.

[0038] In this embodiment, when the protective plate 3 is damaged and needs to be replaced, firstly, push the protective shell 24 upwards, causing the protective shell 24 to drive the slide rail 25 to slide along the slide groove 26, thereby removing the protective shells 24 on both sides. Then, rotate the locking sleeve 15 clockwise, causing the locking sleeve 15 to move along the threaded line on the outer wall of the mounting sleeve 5. Then, the locking sleeve 15 no longer limits the locking rod 16. Then, rotate the control sleeve 11 clockwise, causing the control sleeve 11 to drive the multiple locking rods 16 sliding on the side wall to move. Then, the side wall of the locking groove 17 will press one end of the locking rod 16. Due to the rounded corner design at the end of the locking rod 16 and the edge of the locking groove 17, one end of the locking rod 16 will slide out of the locking groove 17, and the other end of the locking rod 16 will drive the movable spring 18 to stretch. The control sleeve 11 drives multiple guide blocks 13 to rotate synchronously via the fixed plate 12. The guide blocks 13 then slide along the guide groove 7 on the outer side of the outer sleeve 6. Due to the spiral structure of the guide groove 7, the spiral array arrangement of the guide blocks 13, and the limiting effect of the movable block 20 and the movable groove 19 on the outer sleeve 6, the outer sleeve 6 cannot rotate. The outer sleeve 6 then drives the inner sleeve 8 to slide along the movable groove 19 via the movable block 20. The chamfered structure on the inner side of the inner sleeve 8 contacts the chamfered structure on the outer side of the locking block 9, pressing the locking block 9 inward. The locking block 9 gradually detaches from one side of the locking platform 10 and slides into the mounting groove 21. The locking block 9 also presses against the push spring 22 on one side. When the control sleeve 11 can no longer rotate... The inner sleeve 8 completely presses the locking block 9 into the mounting groove 21, so that the locking block 9 is no longer engaged with the locking platform 10. Then, the mounting sleeve 5 is pulled to one side to remove it from the outside of the mounting rod 14. Then, the push spring 22 pushes the locking block 9 out of the mounting groove 21, so that the locking block 9 is reset. Then, the mounting frame 2 is removed, and the damaged protective plate 3 is removed from one side of the fixed frame 27. Then, the new protective plate 3 is installed on one side of the fixed frame 27. Then, the mounting frame 2 is reinstalled on one side of the fixed base 4, so that the mounting rod 14 passes through the mounting hole opened on the mounting frame 2. Then, the mounting sleeve 5 is put on the outside of the mounting rod 14. During the fitting process, the inner wall of the guide platform 23 presses against the outer wall of the locking block 9, so that the locking block 9 is retracted into the mounting groove 21 and pushes the push spring 22. 2. After the mounting sleeve 5 is fully fitted onto the outside of the mounting rod 14, the control sleeve 11 is rotated in the opposite direction. Then, the control sleeve 11 drives the fixing plate 12 to rotate in reverse. Then, through the cooperation of the guide block 13 and the wire groove, the outer sleeve 6 slides back to its original position. Then, the outer sleeve 6 drives the inner sleeve 8 to slide back to its original position along the movable groove 19 through the movable block 20. Then, the inner wall of the inner sleeve 8 no longer limits the outer side of the locking block 9. Then, the push spring 22 pushes the locking block 9 out of the mounting groove 21, so that the locking block 9 re-engages with the side of the locking platform 10. When the outer sleeve 6 and the inner sleeve 8 are fully reset, the movable spring 18 just drives the locking rod 16 to slide back to its original position, so that one end of the locking rod 16 is reinserted into the original locking groove 17. Then, the locking sleeve 15 is rotated counterclockwise, so that the locking sleeve 15 resets along the thread line.Then, the inner wall of the locking sleeve 15 limits the outer end of the locking rod 16, preventing the locking rod 16 from moving. The locking rod 16 then cooperates with the locking groove 17 to limit the control sleeve 11, preventing it from moving and ensuring the stability of the installation structure. Next, the slide rails 25 on both sides of the protective shell 24 are aligned with the slide groove 26, causing the protective shell 24 to slide along the slide rails 25, thus reinstalling the protective shell 24 onto one side of the fixed base 4, further protecting the quick-change device.

[0039] Please see Figures 1-3 As a further embodiment of the overall equipment: a fixed frame 27 is fixedly provided on one side of the fixed base 4, and the display screen 1 is detachably installed in the fixed frame 27. The display screen 1 is pressed between the mounting frame 2 and the fixed frame 27.

[0040] A button 28 is provided on one side of the fixed base 4, and a mounting shell 29 is detachably provided on the outside of the button 28. The mounting shell 29 is detachably installed on one side of the fixed base 4.

[0041] More specifically, in daily use, the device connects the button 28 and the display screen 1 through the external control module. The display screen 1 is operated through the button 28, reducing damage to the display screen 1. The fixed frame 27 ensures the stable installation of the display screen 1. At the same time, the mounting frame 2 and the fixed frame 27 work together to press the transparent protective plate 3 to one side of the display screen 1, which can effectively prevent damage to the display screen 1 caused by external impacts and other factors, thereby achieving effective protection of the display screen 1 and extending its service life. When the protective plate 3 is damaged, it can be replaced. In addition, the protective plate 3 also prevents scratches on the outside of the display screen 1, ensuring the clarity of the display screen 1.

[0042] In summary, when the protective plate 3 is damaged and needs to be replaced, first push the protective shell 24 upwards, causing the protective shell 24 to slide along the slide rail 25 along the slide groove 26, thereby removing the protective shells 24 on both sides. Then, rotate the locking sleeve 15 clockwise, causing the locking sleeve 15 to move along the threaded line on the outer wall of the mounting sleeve 5. Then, the locking sleeve 15 no longer limits the locking rod 16. Then, rotate the control sleeve 11 clockwise, causing the multiple locking rods 16 sliding on the side wall to move. Then, the side wall of the locking groove 17 will press one end of the locking rod 16. Due to the rounded corner design at the end of the locking rod 16 and the edge of the locking groove 17, one end of the locking rod 16 will slide out of the locking groove 17, and the other end of the locking rod 16 will move... When the movable spring 18 is stretched, the control sleeve 11 will drive multiple guide blocks 13 to rotate synchronously through the fixed plate 12. Then, the guide blocks 13 will slide along the guide groove 7 opened on the outer side of the outer sleeve 6. Due to the spiral structure design of the guide groove 7, the spiral array arrangement of the guide blocks 13, and the limiting effect of the movable block 20 and the movable groove 19 on the outer sleeve 6, the outer sleeve 6 cannot rotate. Then, the outer sleeve 6 will drive the inner sleeve 8 to slide along the movable groove 19 through the movable block 20. Then, the chamfered structure on the inner side of the inner sleeve 8 will contact the chamfered structure on the outer side of the locking block 9. Then, the inner sleeve 8 will press the locking block 9 inward. Then, the locking block 9 will gradually detach from one side of the locking platform 10 and gradually slide into the mounting groove 21. The locking block 9 will also compress the push spring 22 set on one side. When the control sleeve 11 can no longer rotate, the inner sleeve 8 completely presses the locking block 9 into the mounting groove 21, so that the locking block 9 is no longer engaged with the locking platform 10. Then, the mounting sleeve 5 is pulled to one side to remove it from the outside of the mounting rod 14. Then, the push spring 22 will push the locking block 9 out of the mounting groove 21, so that the locking block 9 is reset. Then, the mounting frame 2 is removed, and the damaged protective plate 3 is removed from one side of the fixed frame 27. Then, the new protective plate 3 is installed on one side of the fixed frame 27. Then, the mounting frame 2 is reinstalled on one side of the fixed base 4, so that the mounting rod 14 passes through the mounting hole opened on the mounting frame 2. Then, the mounting sleeve 5 is fitted onto the outside of the mounting rod 14. During the fitting process, the inner wall of the guide platform 23 presses against the outer wall of the locking block 9, so that the locking block 9 is reset. The mounting sleeve 5 is inserted into the mounting groove 21 and presses against the push spring 22. After the mounting sleeve 5 is fully fitted onto the outside of the mounting rod 14, the control sleeve 11 is rotated in the opposite direction. Then, the control sleeve 11 drives the fixing plate 12 to rotate in reverse. Then, through the cooperation of the guide block 13 and the wire groove, the outer sleeve 6 slides back to its original position. Then, the outer sleeve 6 drives the inner sleeve 8 to slide back to its original position along the movable groove 19 through the movable block 20. Then, the inner wall of the inner sleeve 8 no longer limits the outer side of the locking block 9. Then, the push spring 22 pushes the locking block 9 out of the mounting groove 21, so that the locking block 9 re-engages with the side of the locking platform 10. When the outer sleeve 6 and the inner sleeve 8 are fully reset, the movable spring 18 just drives the locking rod 16 to slide back to its original position, so that one end of the locking rod 16 is reinserted into the original locking groove 17. Then, the locking sleeve 15 is rotated counterclockwise.The locking sleeve 15 is reset along the threaded line, and then the inner wall of the locking sleeve 15 limits the outer end of the locking rod 16, preventing the locking rod 16 from moving. The locking rod 16 then cooperates with the locking groove 17 to limit the control sleeve 11, preventing it from moving and ensuring the stability of the installation structure. Then, the slide rails 25 on both sides of the protective shell 24 are aligned with the slide groove 26, causing the protective shell 24 to slide along the slide rails 25 along the slide groove 26. This allows the protective shell 24 to be reinstalled on one side of the fixed base 4, providing further protection for the quick-change device.

[0043] In daily use, the device connects the button 28 and the display screen 1 through the external control module. The display screen 1 is operated through the button 28, reducing damage to the display screen 1. The fixed frame 27 ensures the stable installation of the display screen 1. At the same time, the mounting frame 2 and the fixed frame 27 work together to press the transparent protective plate 3 to one side of the display screen 1, which can effectively prevent damage to the display screen 1 caused by external impacts and other factors, thereby achieving effective protection of the display screen 1 and extending its service life. When the protective plate 3 is damaged, it can be replaced. In addition, the protective plate 3 also prevents scratches on the outside of the display screen 1, ensuring the clarity of the display screen 1.

[0044] 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 door access control display screen, comprising a display screen (1), characterized in that: The display screen (1) is provided with a protective device on its outer side. The protective device includes a mounting frame (2), a protective plate (3), and a fixing seat (4). The mounting frame (2) is installed on one side of the fixing seat (4), and the protective plate (3) is located inside the mounting frame (2). Quick-change devices are installed on both sides of the mounting frame (2). The quick-change device includes a mounting sleeve (5), an outer sleeve (6), a guide groove (7), an inner sleeve (8), a locking block (9), a locking platform (10), a control sleeve (11), a fixing plate (12), a guide block (13), and a mounting rod (14). The outer sleeve (6) is located outside the mounting sleeve (5), and the guide groove (7) is spirally opened on the outer side of the outer sleeve (6). The sleeve (8) is set inside the mounting sleeve (5), the locking block (9) is set on one side of the locking platform (10), the fixing plate (12) is connected to one side of the control sleeve (11), and multiple guide blocks (13) are arranged on one side of the fixing plate (12). A locking mechanism is provided on the outside of the mounting sleeve (5). The locking mechanism includes a locking sleeve (15), a locking rod (16), a locking groove (17), and a movable spring (18). The locking sleeve (15) is threaded onto the outside of the mounting sleeve (5). The locking rod (16) is set on the side wall of the control sleeve (11). One end of the locking rod (16) is connected to the control sleeve (11) through the movable spring (18). Multiple locking grooves (17) are opened on the outside of the mounting sleeve (5).

2. The door disabling display screen according to claim 1, characterized in that: The side wall of the mounting sleeve (5) is provided with a movable groove (19), and a movable block (20) is slidably provided in the movable groove (19). The inner wall of the outer sleeve (6) is fixedly connected to the outer wall of the inner sleeve (8) through the movable block (20).

3. A door disabling display screen according to claim 2, characterized in that: The mounting rod (14) has an mounting groove (21) on its inner side, and a push spring (22) is movably installed in the mounting groove (21). One side of the locking block (9) is connected to the inner wall of the mounting groove (21) through the push spring (22).

4. A door disabling display screen according to claim 3, characterized in that: The card holder (10) is provided with a guide platform (23) on one side, and the guide platform (23) is fixedly installed inside the mounting sleeve (5).

5. A door disabling display screen according to claim 1, characterized in that: The mounting base (4) is provided with a protective shell (24) on one side.

6. A door disabling display screen according to claim 5, characterized in that: The protective shell (24) is connected to slide rails (25) on both sides. The fixing seat (4), the mounting frame (2) and the mounting shell (29) are all provided with slide grooves (26) on their inner sides. The slide grooves (26) are adapted to the slide rails (25).

7. A door disabling display screen according to any one of claims 1-6, characterized in that: A fixing frame (27) is fixedly provided on one side of the fixing base (4), and the display screen (1) is detachably installed in the fixing frame (27). The display screen (1) is pressed between the mounting frame (2) and the fixing frame (27).

8. A door disabling display screen according to claim 7, characterized in that: A button (28) is provided on one side of the fixed base (4), and a mounting shell (29) is detachably provided on the outside of the button (28). The mounting shell (29) is detachably installed on one side of the fixed base (4).

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