Double-column lifter for liquid crystal screen

Abstract

The double-column type lifter comprises a shell, a lifting frame is arranged in an inner cavity of the shell, a double-column lifting mechanism for driving the lifting frame to stably ascend and descend is arranged on one side of the lifting frame, and the liquid crystal screen is arranged at the top of the lifting frame. An angle adjusting mechanism for driving the liquid crystal screen to rotate stably and supporting and fixing the liquid crystal screen is arranged between the lifting frame and the liquid crystal screen, and a disassembling mechanism for disassembling and stably connecting the liquid crystal screen is arranged between the liquid crystal screen and the angle adjusting mechanism. Firstly, through the double-column lifting mechanism, the lifting frame can be sequentially controlled to ascend and descend by starting a first motor, the lifting stability of the lifting frame is improved through cooperation of guide column rods and guide strips on the two sides, the moving position of the liquid crystal screen can be automatically locked through a contact switch, and the moving driving effect is improved; the problems that a traditional single-column structure shakes, is low in load bearing and is prone to damage are solved.

Description

Technical Field

[0001] This invention relates to the field of LCD screen lift technology, and more specifically, to a dual-column lift for LCD screens. Background Technology

[0002] An LCD lift screen is a type of display screen that can be automatically raised and lowered inside a conference table. It mainly consists of a lift mechanism and a display screen. When the display screen is needed, the lift mechanism, hidden inside the conference table, raises the display screen from under the table to the table surface. When the display screen is not in use, the lift mechanism controls the display screen to automatically lower and hide it inside the conference table, thus preventing theft and dust, while maintaining the flatness and aesthetics of the table surface. Traditional lifting devices mostly adopt a single-column lifting structure, which uses only one guide column or ball screw to achieve lifting guidance. During the lifting process, the LCD screen is prone to swaying left and right, resulting in low stability. Moreover, when replacing the LCD screen, the entire device needs to be disassembled before it can be replaced, which is extremely inefficient. During the lifting process, the power cords and signal lines inside the lifting device are dragged along with the lifting frame, which is prone to friction with the shell wall, causing wear on the insulation layer and even leading to lifting jamming failure, affecting the service life. Therefore, a double-column lifting device for LCD screens is proposed. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a dual-column lift for LCD screens to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a dual-column lifting device for an LCD screen, comprising a housing, an inner cavity of the housing being provided with a lifting frame, a dual-column lifting mechanism being provided on one side of the lifting frame for driving the lifting frame to move stably, an LCD screen being provided on the top of the lifting frame, an angle adjustment mechanism being provided between the lifting frame and the LCD screen for driving the LCD screen to rotate stably and for supporting and fixing it, and a disassembly mechanism being provided between the LCD screen and the angle adjustment mechanism for disassembling and stably connecting the LCD screen; The middle part of the lifting frame is equipped with a computer system host and a winding mechanism for winding the connecting wires. The bottom of the lifting frame is equipped with a connecting wire chain for guiding the wires. The bottom of the inner cavity of the housing is equipped with a driving double-column lifting mechanism, an angle adjustment mechanism, and an operating system motherboard for opening and closing the computer system host and the LCD screen.

[0005] In a preferred embodiment, the top of the housing has an outlet, and a dust cover is rotatably connected to the top of the housing. A plurality of magnetic strips are provided on one side edge of the dust cover, and the LCD screen extends through the middle of the outlet to the top of the housing.

[0006] In a preferred embodiment, a switch operator is fixedly connected to the top of the inner cavity of the housing, and a USB port and a switch button are provided on one side of the top of the housing. The switch operator is interconnected with the computer system host and the operating system motherboard, and the connection cable between the computer system host and the operating system motherboard is fixed to the middle of one side of the connection cable chain by a cable tie.

[0007] In a preferred embodiment, the dual-column lifting mechanism includes a support plate fixed to the bottom of the housing cavity, guide rods symmetrically fixed to the top two sides of the support plate, a top plate fixedly connected to the top of the guide rods, and a first motor fixedly connected to the bottom of the support plate, with a ball screw connected to the output end of the first motor.

[0008] In a preferred embodiment, a plurality of studs are fixedly connected to the top of the inner cavity of the housing. The studs penetrate the middle of the top plate and are fitted with nuts. Three guide bars are fixedly connected to one side of the lifting frame. The guide rods and ball screws both penetrate the middle of the corresponding guide bars. The ball screws are threaded to the guide bars. Contact switches are symmetrically fixedly connected to both sides of the top of the lifting frame.

[0009] In a preferred embodiment, the winding mechanism includes a winding box fixed in the middle of the lifting frame. A partition plate is fixedly connected to the middle of the winding box. A rotating shaft is inserted into the middle of the partition plate. A spiral spring is sleeved on one end of the rotating shaft. The two ends of the spiral spring are fixedly connected to the rotating shaft and the wall of the winding box, respectively. The wire between the computer system host and the switch operator passes through the middle of the rotating shaft and is wound around the middle of the rotating shaft. The spiral spring and the wound wire are located on both sides of the partition plate.

[0010] In a preferred embodiment, the angle adjustment mechanism includes end seats fixed on both sides of the top of the lifting frame, a support column rotatably connected to the middle of the end seats, stabilizing connection mechanisms symmetrically arranged at both ends of the bottom of the support column, a support frame fixedly connected to the top of the inner cavity of the lifting frame, a second motor fixedly connected to one side of the support frame, a first bevel gear connected to the output end of the second motor, a second bevel gear arranged on the top of one side of the first bevel gear, a rotating rod fixedly connected to the top of the second bevel gear, and the top of the LCD screen penetrates through the lifting frame and extends to the top of the lifting frame.

[0011] In a preferred embodiment, a U-shaped frame is fixedly connected to the top of the lifting frame at the position of the rotating rod. The top end of the rotating rod is connected to the U-shaped frame through a bearing seat. A lifting slider is sleeved on the top of the rotating rod. Both ends of the U-shaped frame pass through the middle of the lifting slider. A connecting rod is rotatably connected to one end of the lifting slider. A connecting block is rotatably connected to one end of the connecting rod. The connecting block is fixed to the bottom of one side of the support column.

[0012] In a preferred embodiment, the stabilizing connection mechanism includes fixing blocks fixed to both sides of the bottom of the support column. A guide hole is provided in the middle of the fixing block, and a fixing guide rod is inserted into the middle of the guide hole. Fixing seats are symmetrically fixed to both ends of the fixing guide rod, and the fixing seats are fixed to the top of the lifting frame.

[0013] In a preferred embodiment, the splitting mechanism includes insert plates fixed to both sides of the bottom of the LCD screen. A first threaded hole is provided on one side of the insert plate, and a slot is provided on the top of the support column. A connecting hole is provided in the inner cavity of the slot corresponding to the position of the insert plate. The bottom end of the LCD screen is inserted into the middle of the slot, and the insert plate is inserted into the middle of the connecting hole. A second threaded hole is provided on one side of the support column corresponding to the first threaded hole. A fixing bolt is inserted in the middle of the second threaded hole, and one end of the fixing bolt extends into the first threaded hole and is threadedly connected to the first threaded hole. The first threaded hole and the second threaded hole are inclined.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention firstly uses a double-column lifting mechanism, which can sequentially control the lifting frame to rise and fall by starting the first motor. The stability of the lifting frame is improved by the cooperation of the guide rods and guide bars on both sides. Furthermore, the movement position of the LCD screen can be automatically locked by a contact switch, which improves the driving movement effect and solves the problems of "shaking, low load-bearing capacity, and easy damage" of traditional single-column structures. 2. The present invention also features a splitting mechanism that allows the LCD screen to be directly driven to the top of the housing when it needs to be disassembled. The LCD screen can then be removed and replaced by removing the fixing bolts, eliminating the need for overall disassembly. This facilitates maintenance and reduces repair costs. In addition, the slots improve the stability of the LCD screen installation and enhance the connection strength. 3. The present invention also features an angle adjustment mechanism that can automatically drive and adjust the angle of the LCD screen during use. The stable connection mechanism can improve the stability and support strength of the LCD screen during angle adjustment. The winding mechanism and the connecting chain can guide and wind up the connected wires during lifting and moving, effectively organizing the wires and cables, reducing the failure rate of tangling and wear, and extending the service life. In summary, through the interaction of the above-mentioned multiple functions, the stability of the lifting drive, the stability of the angle adjustment, and the support strength can be improved. At the same time, it can facilitate the disassembly and replacement of the LCD screen for maintenance and use, reducing maintenance costs. It can also effectively manage wires and cables, reducing the failure rate of tangling and wear, and extending service life. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram showing the disassembled structure of the housing and lifting frame of the present invention.

[0017] Figure 3 This is a schematic diagram of the housing and lifting frame of the present invention from another angle.

[0018] Figure 4 This is a schematic diagram showing the disassembled structure of the LCD screen and the lifting frame of the present invention.

[0019] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0020] Figure 6 This is a schematic diagram of the cross-sectional structure connecting the fixing base and the support column of the present invention.

[0021] Figure 7 This is a schematic diagram of the split cross-sectional structure of the support column and lifting frame of the present invention.

[0022] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point B in the middle.

[0023] Figure 9 This is a schematic diagram showing the disassembled structure of the winding box and the rotating shaft of the present invention.

[0024] The attached diagram is labeled as follows: 1. Housing; 2. Lifting frame; 3. LCD screen; 4. Operating system motherboard; 5. Computer system host; 6. Connecting chain; 7. Support plate; 8. First motor; 9. Ball screw; 10. Guide rod; 11. Guide bar; 12. Top plate; 13. Stud; 14. USB port; 15. Switch button; 16. Dust cover; 17. Magnetic strip; 18. End seat; 19. Support column; 20. Slot; 21. Connecting hole; 22. Insert plate; 23. First thread. 24. Second threaded hole; 25. Fixing bolt; 26. Fixing seat; 27. Fixing block; 28. Fixing guide rod; 29. ​​Guide hole; 30. Contact switch; 31. Support frame; 32. Second motor; 33. First bevel gear; 34. Rotating rod; 35. Second bevel gear; 36. U-shaped frame; 37. Lifting slider; 38. Connecting rod; 39. Connecting block; 40. Rewinding box; 41. Divider plate; 42. Rotating shaft; 43. Scroll spring; 44. Outlet; 45. Switch operator. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] As attached Figure 1-9 The illustrated dual-column lifter for an LCD screen includes a housing 1. A lifting frame 2 is housed within the inner cavity of the housing 1. A dual-column lifting mechanism is located on one side of the lifting frame 2 to drive its stable lifting. This mechanism controls the stable lifting of the lifting frame 2, improving its stability and preventing swaying. It also prevents mechanical collisions that could damage components and automatically stops the lifting frame 2 once it reaches a designated position. An LCD screen 3 is mounted on the top of the lifting frame 2. An angle adjustment mechanism is located between the lifting frame 2 and the LCD screen 3, driving its stable rotation and providing support. This mechanism automatically controls the rotation of the LCD screen 3 after lifting, adjusting its angle for easier observation and use. It also improves stability during adjustment and enhances the stability after adjustment, while limiting the angle to prevent damage from collisions. A disassembly mechanism is located between the LCD screen 3 and the angle adjustment mechanism for disassembling and stably connecting the LCD screen 3. This mechanism facilitates quick disassembly and replacement of the LCD screen 3 in case of damage, and improves the stability and stability of the combined connection after installation, significantly reducing maintenance costs. The middle of the lifting frame 2 is equipped with a computer system host 5 and a winding mechanism for winding the connecting cables. The winding mechanism can prevent the connecting cables from being dragged, tangled, and rubbed by the lifting adjustment guide rod 10 of the lifting frame 2, thus avoiding cable damage and reducing the failure rate. The bottom of the lifting frame 2 is equipped with a connecting cable chain 6 for guiding the wires. The connecting cable chain 6 guides and limits the wires between the computer system host 5 and the operating system motherboard 4, preventing the wires from being tangled, stuck, or dragged and damaged. The bottom of the inner cavity of the housing 1 is equipped with an operating system motherboard 4 that drives the dual-column lifting mechanism and the angle adjustment mechanism, as well as the opening and closing time of the computer system host 5 and the LCD screen 3. The operating system motherboard 4 can easily control the dual-column lifting mechanism and the angle adjustment mechanism, as well as the opening and closing time of the computer system host 5 and the LCD screen 3, making it convenient for drive control.

[0027] As attached Figure 1-3As shown, the top of the housing 1 has an outlet 44, and a dust cover 16 is rotatably connected to the top of the housing 1. Multiple magnetic strips 17 are provided on one edge of the dust cover 16. The LCD screen 3 extends through the middle of the outlet 44 to the top of the housing 1. A switch operator 45 is fixedly connected to the top of the inner cavity of the housing 1. A USB port 14 and a switch button 15 are provided on one side of the top of the housing 1. The switch operator 45 is interconnected with the computer system host 5 and the operating system motherboard 4. The connection cable between the computer system host 5 and the operating system motherboard 4 is fixed to the middle of one side of the connection cable chain 6 by a cable tie. The dust cover 16 covers the outlet 44 and is magnetically attached to the top of the housing 1 by the magnetic strips 17. The frame is fixed in place, effectively preventing dust and splash water from entering. The magnetic strip 17 allows the dust cover 16 to be easily opened when the LCD screen 3 rises. The switch operator 45 facilitates start-up operation, and the operating system motherboard 4 allows for easy connection to the main control unit, enabling simultaneous control of multiple internal mechanisms within the housing 1. The switch operator 45 integrates a signal processing module to receive control commands from the switch button, remote control, or APP. The USB port 14 supports data transfer and charging, facilitating connection of peripherals such as USB flash drives and mice. The connecting cable chain 6 guides and limits the wires between the operating system motherboard 4 and the computer system host 5, ensuring the lifting frame 2 remains in place while preventing cable tangling.

[0028] As attached Figure 1 , 2 As shown in Figures 3, 4, and 7, the dual-column lifting mechanism includes a support plate 7 fixed to the bottom of the inner cavity of the housing 1. Guide rods 10 are symmetrically fixedly connected to both sides of the top of the support plate 7. A top plate 12 is fixedly connected to the top of the guide rods 10. A first motor 8 is fixedly connected to the bottom of the support plate 7. A ball screw 9 is connected to the output end of the first motor 8. Multiple studs 13 are fixedly connected to the top of the inner cavity of the housing 1. The studs 13 penetrate the middle of the top plate 12 and are fitted with nuts. Three guide bars 11 are fixedly connected to one side of the lifting frame 2. The guide rods 10 and ball screws 9 both penetrate the middle of the corresponding guide bars 11. The ball screws 9 are threadedly connected to the guide bars 11. Contact switches 30 are symmetrically fixedly connected to the top two sides of the frame 2. Starting the first motor 8 controls the rotation of the ball screw 9, which can drive the guide bar 11 to move the lifting frame 2 up and down. The cooperation between the guide bar 11 and the guide rod 10 improves the stability of the lifting frame 2. The cooperation between the top plate 12 and the stud 13 can limit the top of the guide rod 10 and the ball screw 9, improving their stability. The contact switches 30 contact the top wall of the inner cavity of the housing 1, which can sequentially control the first motor 8 to automatically stop and lock, thereby locking the position of the lifting frame 2 and improving the stability and fixation effect of the lifting drive.

[0029] As attached Figure 1 ,2 As shown in Figure 9, the winding mechanism includes a winding box 40 fixed in the middle of the lifting frame 2. A partition plate 41 is fixedly connected to the middle of the winding box 40. A rotating shaft 42 is inserted into the middle of the partition plate 41. A spiral spring 43 is sleeved on one end of the rotating shaft 42. The two ends of the spiral spring 43 are fixedly connected to the rotating shaft 42 and the wall of the winding box 40, respectively. The wire between the computer system host 5 and the switch operator 45 passes through the middle of the rotating shaft 42 and is wound around the middle of the rotating shaft 42. The spiral spring 43 and the wound wire are located on both sides of the partition plate 41. By moving the lifting frame 2 up and down, the distance between the computer system host 5 and the switch operator 45 can be adjusted. The wire located outside the rotating shaft 42 can be pulled to make the rotating shaft 42 rotate and squeeze the spiral spring 43. The tension generated by the return of the spiral spring 43 can automatically wind up the wire when the lifting frame 2 moves upward, avoiding the wire from getting tangled.

[0030] As attached Figure 4-8 As shown, the angle adjustment mechanism includes end seats 18 fixed on both sides of the top of the lifting frame 2. A support column 19 is rotatably connected to the middle of the end seat 18. Stable connection mechanisms are symmetrically arranged at both ends of the bottom of the support column 19. A support frame 31 is fixedly connected to the top of the inner cavity of the lifting frame 2. A second motor 32 is fixedly connected to one side of the support frame 31. A first bevel gear 33 is connected to the output end of the second motor 32. A second bevel gear 35 is arranged on the top of one side of the first bevel gear 33. A rotating rod 34 is fixedly connected to the top of the second bevel gear 35. The top of the LCD screen 3 passes through the lifting frame 2 and extends to the top of the lifting frame 2. A U-shaped frame 36 is fixedly connected to the top of the lifting frame 2 at the position of the rotating rod 34. The top of the rotating rod 34 is connected to the U-shaped frame 36 through a bearing seat. A lifting slider 37 is sleeved on the top of the rotating rod 34. The two ends of the U-shaped frame 36 pass through the middle of the lifting slider 37. One end of the lifting slider 37 rotates... A connecting rod 38 is rotatably connected to one end of the connecting rod 38, and a connecting block 39 is rotatably connected to one side of the bottom of the support column 19. The connecting block 39 is fixed to one side of the bottom of the support column 19. The stabilizing connection mechanism includes fixing blocks 27 fixed to both sides of the bottom of the support column 19. A guide hole 29 is opened in the middle of the fixing block 27, and a fixing guide rod 28 is inserted in the middle of the guide hole 29. Fixing seats 26 are symmetrically fixed to both ends of the fixing guide rod 28. The fixing seats 26 are fixed to the top of the lifting frame 2. By starting the second motor 32, the first bevel gear 33 is controlled to drive the second bevel gear 35 to rotate, so that the rotating rod 34 drives the lifting slider 37 to move up and down and push the connecting rod 38. At this time, the lifting slider 37 can be limited by the two ends of the U-shaped frame 36 to improve the stability of the movement of the lifting slider 37. When the connecting rod 38 is pushed, it will push the connecting block 39, so that the connecting block 39 drives the support column 19 to rotate, thereby driving the LCD screen 3 to rotate and adjusting the rotation angle of the LCD screen 3. At this time, the fixed guide rod 28 can slide inside the guide hole 29 through the stable connection mechanism, which improves the stability and support connection strength of the support column 19 during rotation. The rotation angle of the support column 19 can be limited by the size of the fixed block 27 to ensure that the screen does not move during rotation. When one side wall of the fixed block 27 is in contact with the top wall of the inner cavity of the housing 1, the maximum rotation angle of the support column 19 is limited, which improves the adjustment effect and meets the stability requirements of use in scenarios such as meetings and teaching. As attached Figure 4 , 5 As shown, the splitting mechanism includes insert plates 22 fixed to both sides of the bottom of the LCD screen 3. A first threaded hole 23 is provided on one side of the insert plate 22. A slot 20 is provided on the top of the support column 19. A connecting hole 21 is provided in the inner cavity of the slot 20 corresponding to the position of the insert plate 22. The bottom end of the LCD screen 3 is inserted into the middle of the slot 20, and the insert plate 22 is inserted into the middle of the connecting hole 21. A second threaded hole 24 is provided on one side of the support column 19 corresponding to the position of the first threaded hole 23. A fixing bolt 25 is inserted into the middle of the second threaded hole 24. One end of the fixing bolt 25 extends into the first threaded hole 23 and is threadedly connected to it. The first threaded hole 23 and the second threaded hole 24 are inclined, allowing for... By inserting the bottom of the LCD screen 3 into the slot 20, the left and right displacement and shaking of the LCD screen 3 can be restricted. The insertion plate 22 is inserted into the connecting hole 21 to achieve the initial positioning of the screen body, providing a precise reference for bolt connection and avoiding misalignment during bolt installation. Furthermore, by inserting the fixing bolt 25 into the middle of the second threaded hole 24 and the first threaded hole 23, the LCD screen 3 can be easily removed when the top of the support column 19 is moved to the top of the housing 1. The LCD screen 3 can be disassembled and replaced without the need for complete removal. When fixed, a combined force of "axial clamping force + radial positioning force" can be generated. The axial clamping force ensures a tight fit, while the radial positioning force further restricts the radial movement of the LCD screen 3.

[0031] It should be noted that the operating system motherboard 4, computer system host 5, switch operator 45, and contact switch 30 are all existing technologies. The operating system motherboard 4 includes a motor drive module, a signal acquisition module, and a power management module, etc., which can be set according to actual needs and will not be elaborated on further. The computer system host 5 includes the operating system, internal motherboard, cooling fan, etc., which can be set according to actual needs and will not be elaborated on further. The switch operator 45 includes a signal processing module, a signal receiving module, etc., which can be set according to actual needs and will not be elaborated on further. Furthermore, both the second motor 32 and the first motor 8 described in this application are servo motor drives equipped with encoders, which can achieve precise adjustment of motor drive and brake lock to achieve fixation. This is existing technology and will not be elaborated further. Furthermore, the connecting chain 6 described in this application document is a chain structure, which is the same as the existing chain structure. The two ends of the connecting chain 6 are fixedly connected to one side of the lifting frame 2 and the operating system motherboard 4, respectively. It is a plastic product that can fix and limit the guide of the wire harness. It is existing technology and will not be elaborated further. Meanwhile, the bottom connection wire of the LCD screen 3 described in this application extends through the middle of the insert plate 22 to the top of the lifting frame 2 and is electrically connected to the computer system host 5 in the middle of the lifting frame 2 through the through hole at the top of the lifting frame 2.

[0032] Working principle of the invention: When in use, the device is connected to an external power source through the plug on one side of the operating system motherboard 4. Pressing the switch button 15 controls the device to start. Pressing the switch button 15 again controls the first motor 8 to start through the operating system motherboard 4, which in turn drives the lifting frame 2 and the LCD screen 3 to move upward until the LCD screen 3 pushes open the dust cover 16 and extends out from the outlet 44. At the same time, the winding mechanism will automatically wind up due to the reset of the spiral spring 43 to prevent the cable from slack and sagging. At this time, the connecting chain 6 will automatically unfold to achieve orderly guidance. Until the top of the contact switch 30 is attached to the top of the inner cavity of the housing 1, the first motor 8 will stop, and the height of the lifting frame 2 and the LCD screen 3 will be locked at the same time. Then, the operating system motherboard 4 controls the second motor 32 to start and control the LCD screen 3 to rotate at a fixed angle in sequence, so as to achieve the adjustment and fixation of the angle of the LCD screen 3. During the rotation of the LCD screen 3, the stability of the angle adjustment of the LCD screen 3 can be improved by the stabilizing mechanism. Simultaneously with the start of the first motor 8, the operating system motherboard 4 controls the computer system host 5 and LCD screen 3 to start, which can shorten the boot-up time. When shutting down, press and hold the switch button 15 to control the second motor 32 to start in reverse through the operating system motherboard 4, so that the LCD screen 3 is reset in sequence. Then, control the first motor 8 to rotate in reverse while shutting down the computer system host 5 and the LCD screen 3, until the LCD screen 3 and the lifting frame 2 are reset. As the lifting frame 2 and LCD screen 3 move downwards, the wires inside the winding mechanism will automatically extend due to the pull, and the connecting chain 6 will automatically fold to guide the cables in an orderly manner to avoid tangling. When the LCD screen 3 needs to be replaced or maintained, first move the LCD screen 3 to the highest position, then turn off the power, remove the fixing bolt 25, lift the LCD screen 3 upwards, and disconnect the wire connector to completely remove it. When installing, connect the bottom wire structure of the new LCD screen 3 to the top connector of the lifting frame 2, insert the plug plate 22 into the connecting hole 21, and rotate the fixing bolt 25 to reset it.

[0033] The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments of this disclosure. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-column lift for an LCD screen, comprising a housing (1), characterized in that: The inner cavity of the housing (1) is provided with a lifting frame (2). A double-column lifting mechanism is provided on one side of the lifting frame (2) to drive the lifting frame (2) to lift stably. An LCD screen (3) is provided on the top of the lifting frame (2). An angle adjustment mechanism is provided between the lifting frame (2) and the LCD screen (3) to drive the LCD screen (3) to rotate stably and support it. A disassembly mechanism for disassembling and stably connecting the LCD screen (3) is provided between the LCD screen (3) and the angle adjustment mechanism. The middle part of the lifting frame (2) is provided with a computer system host (5) and a winding mechanism for winding the connecting wire. The bottom of the lifting frame (2) is provided with a connecting wire chain (6) for guiding the wire. The bottom of the inner cavity of the housing (1) is provided with a driving double column lifting mechanism and an angle adjustment mechanism, as well as an operating system motherboard (4) for opening and closing the computer system host (5) and the LCD screen (3).

2. The dual-column lift for an LCD screen according to claim 1, characterized in that: The top of the housing (1) has an outlet (44), and the top of the housing (1) is rotatably connected to a dust cover (16). A plurality of magnetic strips (17) are provided on one side edge of the dust cover (16). The LCD screen (3) extends through the middle of the outlet (44) to the top of the housing (1).

3. The dual-column lift for an LCD screen according to claim 1, characterized in that: A switch operator (45) is fixedly connected to the top of the inner cavity of the housing (1). A USB port (14) and a switch button (15) are provided on one side of the top of the housing (1). The switch operator (45) is connected to the computer system host (5) and the operating system motherboard (4). The connection cable between the computer system host (5) and the operating system motherboard (4) is fixed to the middle of one side of the connection cable chain (6) by a cable tie.

4. A dual-column lift for an LCD screen according to claim 1, characterized in that: The dual-column lifting mechanism includes a support plate (7) fixed at the bottom of the inner cavity of the housing (1). Guide rods (10) are symmetrically fixed on both sides of the top of the support plate (7). A top plate (12) is fixedly connected to the top of the guide rods (10). A first motor (8) is fixedly connected to the bottom of the support plate (7). A ball screw (9) is connected to the output end of the first motor (8).

5. A dual-column lift for an LCD screen according to claim 4, characterized in that: Multiple studs (13) are fixedly connected to the top of the inner cavity of the housing (1). The studs (13) penetrate the middle of the top plate (12) and are fitted with nuts. Three guide bars (11) are fixedly connected to one side of the lifting frame (2). The guide rod (10) and the ball screw (9) both penetrate the middle of the corresponding guide bar (11). The ball screw (9) is threaded to the guide bar (11). Contact switches (30) are symmetrically fixedly connected to both sides of the top of the lifting frame (2).

6. A dual-column lift for an LCD screen according to claim 1, characterized in that: The winding mechanism includes a winding box (40) fixed in the middle of the lifting frame (2). A partition plate (41) is fixedly connected to the middle of the winding box (40). A rotating shaft (42) is inserted in the middle of the partition plate (41). A spiral spring (43) is sleeved on one end of the rotating shaft (42). The two ends of the spiral spring (43) are fixedly connected to the rotating shaft (42) and the wall of the winding box (40), respectively. The wire between the computer system host (5) and the switch operator (45) passes through the middle of the rotating shaft (42) and is wound around the middle of the rotating shaft (42). The spiral spring (43) and the wound wire are located on both sides of the partition plate (41).

7. A dual-column lift for an LCD screen according to claim 1, characterized in that: The angle adjustment mechanism includes end seats (18) fixed on both sides of the top of the lifting frame (2). A support column (19) is rotatably connected to the middle of the end seat (18). Stable connection mechanisms are symmetrically arranged at both ends of the bottom of the support column (19). A support frame (31) is fixedly connected to the top of the inner cavity of the lifting frame (2). A second motor (32) is fixedly connected to one side of the support frame (31). A first bevel gear (33) is connected to the output end of the second motor (32). A second bevel gear (35) is arranged on the top of one side of the first bevel gear (33). A rotating rod (34) is fixedly connected to the top of the second bevel gear (35). The top of the LCD screen (3) passes through the lifting frame (2) and extends to the top of the lifting frame (2).

8. A dual-column lift for an LCD screen according to claim 7, characterized in that: The top of the lifting frame (2) is fixedly connected to the rotating rod (34) with a U-shaped frame (36). The top of the rotating rod (34) is connected to the U-shaped frame (36) through a bearing seat. The top of the rotating rod (34) is fitted with a lifting slider (37). The two ends of the U-shaped frame (36) pass through the middle of the lifting slider (37). One end of the lifting slider (37) is rotatably connected to a connecting rod (38). One end of the connecting rod (38) is rotatably connected to a connecting block (39). The connecting block (39) is fixed to the bottom of one side of the support column (19).

9. A dual-column lift for an LCD screen according to claim 8, characterized in that: The stabilizing connection mechanism includes fixed blocks (27) fixed on both sides of the bottom of the support column (19). A guide hole (29) is provided in the middle of the fixed block (27). A fixed guide rod (28) is inserted in the middle of the guide hole (29). Fixed seats (26) are symmetrically fixed at both ends of the fixed guide rod (28). The fixed seats (26) are fixed on the top of the lifting frame (2).

10. A dual-column lift for an LCD screen according to claim 9, characterized in that: The splitting mechanism includes insert plates (22) fixed on both sides of the bottom of the LCD screen (3). A first threaded hole (23) is provided on one side of the insert plate (22). A slot (20) is provided on the top of the support column (19). A connecting hole (21) is provided in the inner cavity of the slot (20) corresponding to the position of the insert plate (22). The bottom end of the LCD screen (3) is inserted into the middle of the slot (20). The insert plate (22) is inserted into the middle of the connecting hole (21). A second threaded hole (24) is provided on one side of the support column (19) corresponding to the position of the first threaded hole (23). A fixing bolt (25) is inserted in the middle of the second threaded hole (24). One end of the fixing bolt (25) extends into the inside of the first threaded hole (23) and is threadedly connected to the first threaded hole (23). The first threaded hole (23) and the second threaded hole (24) are inclined.

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