Lifting screen convenient to adjust

Abstract

The lifting screen convenient to adjust comprises a base and an LED display screen, four guide rails are symmetrically and fixedly arranged at the upper end of the base, a slidable lifting block is arranged between every two guide rails, a mounting plate is fixedly arranged at the upper ends of the two lifting blocks, two rotatable threaded rods are arranged on the base in a penetrating mode, and the LED display screen is arranged on the mounting plate. Threaded seats are fixedly arranged on one sides of the two lifting blocks correspondingly, the threaded seats are arranged on the threaded rods in a penetrating mode, a driving mechanism is arranged in the base, the driving mechanism is connected with the two threaded rods so as to drive the two threaded rods to rotate at the same time, and two fixing blocks are symmetrically and fixedly arranged at the lower end of the mounting plate; a rotatable rotating shaft is arranged between the two fixing blocks in a penetrating mode, one side of each fixing block is provided with a limiting mechanism, the two ends of the rotating shaft are connected with the two limiting mechanisms respectively, and the display device has the advantages that the structure is reasonable, and the display height and the display angle are convenient to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting screens, in particular to a lifting screen which is easy to adjust. Background Art

[0002] A screen is an electrical appliance used to display images and colors. It is divided into silver screens and screens, also known as display screens. The screen size is calculated based on the screen diagonal, usually in inches, referring to the length of the screen diagonal. As the name suggests, a lifting screen can be raised and lowered, making it easy to adjust the height of the screen and has a wide range of uses.

[0003] The lifting screens on the market generally only have the function of lifting the LED display screen, but cannot adjust the display angle of the LED display screen at the same time. Therefore, it is impossible to adjust the best projection angle for users to change the viewing angle for different usage occasions, so its function has certain limitations. In view of the above problems, a solution is proposed below. Utility Model Content

[0004] The utility model aims to provide a lifting screen which is easy to adjust and has the advantages that the display height and angle can be easily adjusted.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A lifting screen that is easy to adjust comprises a base and an LED display screen, wherein four guide rails are symmetrically fixed on the upper end of the base, a slidable lifting block is arranged between every two guide rails, a mounting plate is fixed on the upper ends of the two lifting blocks, two rotatable threaded rods are passed through the base, threaded seats are respectively fixed on one side of the two lifting blocks, and the threaded seats are passed through the threaded rods, a driving mechanism is arranged in the base, and the driving mechanism is connected to the two threaded rods to drive the two threaded rods to rotate simultaneously, two fixed blocks are symmetrically fixed on the lower end of the mounting plate, a rotatable rotating shaft is passed between the two fixed blocks, and the LED display screen is connected to the lower side of the rotating shaft, limiting mechanisms are respectively arranged on one side of the two fixed blocks, and the two ends of the rotating shaft are respectively connected to the two limiting mechanisms.

[0007] Preferably, the driving mechanism includes a motor installed on one side of the base, a worm wheel and a worm are provided in the base, and the worm wheel and the worm are meshed with each other, the output shaft of the motor passes through the base and is fixedly connected to one end of the worm, a rotatable rotating rod is passed through the base, and the worm wheel is fixed on the rotating rod, two bevel gears a are fixed on the rotating rod, and two bevel gears b are also provided in the base, the two bevel gears b are respectively meshed with the two bevel gears a, and the lower ends of the two threaded rods are respectively fixedly connected to the upper ends of the two bevel gears b.

[0008] Preferably, the limiting mechanism includes a limiting pin, a rotating wheel is provided on one side of the fixed block, and one end of the rotating shaft is fixedly connected to the rotating wheel, a plurality of limiting grooves are opened on the rotating wheel, and the top end of the limiting pin is located in the limiting groove, a protrusion is fixedly provided on one side of the fixed block, a sliding rod is passed through the protrusion, and the top end of the sliding rod is fixedly connected to the limiting pin, a return spring is passed through the sliding rod, and the return spring is connected between the protrusion and the tail of the sliding rod.

[0009] Preferably, two support seats are fixedly provided on the inner top of the base, each of the support seats is provided with a rotatable rotating block, and the two threaded rods respectively penetrate the support seats and are fixedly connected to the rotating blocks.

[0010] Preferably, a plurality of universal wheels are symmetrically mounted on the lower end of the base, and limiting blocks are respectively fixed on the top ends of the two threaded rods.

[0011] The beneficial effects of the utility model are as follows: the driving mechanism can drive the two threaded rods to rotate simultaneously, so as to drive the two threaded seats to move up and down along the two threaded rods at the same time, and finally drive the two lifting blocks to move up and down respectively along the guide rails, and the up and down movement of the two lifting blocks can drive the mounting plate to move up and down, and finally the height of the LED display screen can be adjusted, thereby realizing the lifting function of the LED display screen, and the rotation of the rotating shaft can be driven to rotate by rotating the LED display screen, and then the rotation of the rotating shaft can be limited by two limit mechanisms to fix the display angle of the LED display screen, and finally the display angle of the LED display screen can be adjusted for easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an embodiment;

[0013] Figure 2 Schematic diagram of the internal structure of the base in the embodiment;

[0014] Figure 3 is a top view of the base in the embodiment;

[0015] Figure 4 It is a partial structural schematic diagram of an embodiment.

[0016] : 1. base; 2. LED display screen; 3. guide rail; 4. lifting block; 5. mounting plate; 6. threaded rod; 7. threaded seat; 8. driving mechanism; 9. fixing block; 10. rotating shaft; 11. limiting mechanism; 12. motor; 13. worm gear; 14. worm; 15. rotating rod; 16. bevel gear a; 17. bevel gear b; 18. limiting pin; 19. rotating wheel; 20. limiting groove; 21. protrusion; 22. sliding rod; 23. reset spring; 24. supporting seat; 25. rotating block; 26. universal wheel; 27. limiting block. DETAILED DESCRIPTION

[0017] The following is only a preferred embodiment of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0018] like Figures 1 to 4 As shown, a lifting screen that is easy to adjust includes a base 1 and an LED display screen 2. The lower end of the base 1 is symmetrically installed with a plurality of universal wheels 26. The plurality of universal wheels 26 facilitate the movement of the entire lifting screen to increase the use range of the lifting screen. The upper end of the base 1 is symmetrically fixed with four guide rails 3, and a slidable lifting block 4 is arranged between every two guide rails 3. The upper ends of the two lifting blocks 4 are fixed with a mounting plate 5. Two rotatable threaded rods 6 are passed through the base 1. One side of the two lifting blocks 4 is respectively fixed with a threaded seat 7, and the threaded seat 7 is passed through the threaded rod 6. A driving mechanism 8 is arranged in the base 1, and the driving mechanism 8 is connected to the two threaded rods 6 to drive the two threaded rods 6 to rotate at the same time. The two threaded rods 6 can be driven to rotate at the same time through the driving mechanism 8, so as to drive the two threaded seats 7 to move up and down along the two threaded rods 6 at the same time, and finally the two lifting blocks 4 can be driven to move up and down along the guide rails 3 respectively. Limiting blocks 27 are fixedly disposed at the top ends of the two threaded rods 6 , respectively. The limiting blocks 27 can prevent the threaded seat 7 from falling off the threaded rod 6 , thereby preventing the lifting block 4 from falling off the guide rail 3 .

[0019] The driving mechanism 8 includes a motor 12 installed on one side of the base 1. A worm wheel 13 and a worm 14 are provided in the base 1, and the worm wheel 13 and the worm 14 are meshed. The output shaft of the motor 12 passes through the base 1 and is fixedly connected to one end of the worm 14. The rotation of the motor 12 can drive the worm 14 to rotate, thereby driving the worm wheel 13 to rotate. A rotatable rotating rod 15 is provided in the base 1, and the worm wheel 13 is fixed on the rotating rod 15. Two bevel gears a16 are fixed on the rotating rod 15. Two bevel gears b17 are also provided in the base 1. The two bevel gears b17 are respectively meshed with the two bevel gears a16. The lower ends of the two threaded rods 6 are respectively fixedly connected to the upper ends of the two bevel gears b17. The rotation of the worm wheel 13 can drive the rotating rod 15 to rotate, thereby driving the two bevel gears a16 to rotate, and finally driving the two bevel gears b17 and the threaded rod 6 to rotate simultaneously.

[0020] Two support seats 24 are also fixedly provided on the inner top of the base 1, and a rotatable rotating block 25 is respectively provided in each support seat 24. Two threaded rods 6 are respectively passed through the support seats 24 and are respectively fixedly connected to the rotating blocks 25. When the two threaded rods 6 rotate, the rotating blocks 25 can be driven to rotate in the support seats 24 to prevent the threaded rods 6 from sinking during rotation, which can support the threaded rods 6.

[0021] Two fixed blocks 9 are symmetrically fixed at the lower end of the mounting plate 5, a rotatable shaft 10 is passed through the two fixed blocks 9, and the LED display screen 2 is connected to the lower side of the shaft 10. The two lifting blocks 4 can move up and down to drive the mounting plate 5 to move up and down, and finally the height of the LED display screen 2 can be adjusted, thereby realizing the lifting function of the LED display screen 2. Limiting mechanisms 11 are respectively provided on one side of the two fixed blocks 9, and the two ends of the shaft 10 are respectively connected to the two limiting mechanisms 11. The rotating shaft 10 can be driven to rotate by rotating the LED display screen 2, and then the rotation of the rotating shaft 10 can be limited by the two limiting mechanisms 11 to fix the display angle of the LED display screen 2, and finally the display angle of the LED display screen 2 can be adjusted for easy use.

[0022] The limiting mechanism 11 includes a limiting pin 18, a rotating wheel 19 is provided on one side of the fixed block 9, and one end of the rotating shaft 10 is fixedly connected to the rotating wheel 19, a plurality of limiting grooves 20 are provided on the rotating wheel 19, and the top of the limiting pin 18 is located in the limiting groove 20, a protrusion 21 is fixedly provided on one side of the fixed block 9, a sliding rod 22 is passed through the protrusion 21, and the top of the sliding rod 22 is fixedly connected to the limiting pin 18, a reset spring 23 is passed through the sliding rod 22, and the reset spring 23 is connected between the protrusion 21 and the tail of the sliding rod 22, and the sliding rod 22 is pulled downward. 2, so that the slide bar 22 drives the limit pin 18 to move downward, so that the top end of the limit pin 18 is out of the limit slot 20, and at this time, the reset spring 23 is stretched to generate elastic force, and then the LED display screen 2 can be rotated, so as to adjust the actual angle of the LED display screen 2, and finally, the slide bar 22 can be driven back to the initial position by the reset effect of the reset spring 23, so as to drive the limit pin 18 to be pushed into the corresponding limit slot 20 again, so as to limit the rotation of the shaft 10, and finally complete the adjustment of the display angle of the LED display screen 2.

[0023] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are 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 in the protection scope of the present invention.

Claims

1. A lifting screen that is easy to adjust, characterized in that: The invention comprises a base (1) and an LED display screen (2), wherein four guide rails (3) are symmetrically fixed on the upper end of the base (1), a slidable lifting block (4) is arranged between every two guide rails (3), a mounting plate (5) is fixed on the upper ends of the two lifting blocks (4), two rotatable threaded rods (6) are passed through the base (1), a threaded seat (7) is fixed on one side of the two lifting blocks (4), and the threaded seat (7) is passed through the threaded rod (6), and a driving mechanism (8) is arranged inside the base (1). ), and the driving mechanism (8) is connected to the two threaded rods (6) so as to drive the two threaded rods (6) to rotate simultaneously, two fixed blocks (9) are symmetrically fixed at the lower end of the mounting plate (5), a rotatable shaft (10) is passed between the two fixed blocks (9), and the LED display screen (2) is connected to the lower side of the shaft (10), a limiting mechanism (11) is respectively provided on one side of the two fixed blocks (9), and the two ends of the shaft (10) are respectively connected to the two limiting mechanisms (11).

2. The adjustable lifting screen according to claim 1, characterized in that: The driving mechanism (8) comprises a motor (12) mounted on one side of a base (1); a worm wheel (13) and a worm (14) are provided in the base (1), and the worm wheel (13) and the worm (14) are meshed with each other; an output shaft of the motor (12) passes through the base (1) and is fixedly connected to one end of the worm (14); a rotatable rotating rod (15) is provided in the base (1), and the worm wheel (13) is fixedly provided on the rotating rod (15); two bevel gears a (16) are fixedly provided on the rotating rod (15); two bevel gears b (17) are further provided in the base (1), and the two bevel gears b (17) are respectively meshed with the two bevel gears a (16); and the lower ends of the two threaded rods (6) are respectively fixedly connected to the upper ends of the two bevel gears b (17).

3. The easily adjustable lifting screen according to claim 2, characterized in that: The limiting mechanism (11) comprises a limiting pin (18), a rotating wheel (19) is provided on one side of the fixed block (9), and one end of the rotating shaft (10) is fixedly connected to the rotating wheel (19), a plurality of limiting grooves (20) are provided on the rotating wheel (19), and the top end of the limiting pin (18) is located in the limiting groove (20), a protrusion (21) is fixedly provided on one side of the fixed block (9), a sliding rod (22) is passed through the protrusion (21), and the top end of the sliding rod (22) is fixedly connected to the limiting pin (18), a return spring (23) is passed through the sliding rod (22), and the return spring (23) is connected between the protrusion (21) and the tail of the sliding rod (22).

4. The easily adjustable lifting screen according to claim 3, characterized in that: Two support seats (24) are fixedly arranged on the inner top of the base (1), and a rotatable rotating block (25) is arranged in each of the support seats (24). The two threaded rods (6) respectively penetrate the support seats (24) and are fixedly connected to the rotating blocks (25).

5. The easily adjustable lifting screen according to claim 4, characterized in that: A plurality of universal wheels (26) are symmetrically mounted on the lower end of the base (1), and limiting blocks (27) are respectively fixed on the top ends of the two threaded rods (6).

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