Automatic lifting prompter
Through the gear set driven by flexible rack and traction motor, combined with the arc-shaped guide seat and rack storage compartment, the existing teleprompters have been solved, and the precise adjustment and stability of glass height have been achieved. , improves the overall performance of the equipment.
Patent Information
- Application Number
- CN202411234872.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2024-12-24
AI Technical Summary
The existing teleprompter has complex structure and poor stability. The simple traction device leads to inaccurate glass height control and the conduit may be bent, which affects the precise adjustment of glass height.
The first gear set driven by flexible rack and traction motor is used to achieve stable sliding and retracting of the flexible rack through the arc-shaped guide seat and rack storage compartment to avoid bending, and accurately control the glass height with the processor and potentiometer.
It realizes accurate adjustment of glass height, avoids bending, improves the stability and accuracy of glass height, and enhances the stability and convenience of equipment.
Smart Images
Figure CN119182867A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of teleprompters, and in particular relates to an automatic lifting teleprompter. Background Art
[0002] The teleprompter displays the contents of the manuscript through a high-brightness display device, and reflects the contents of the display device onto a special coated glass at a 45-degree angle in front of the camera lens, reflecting the lines so that the speaker can face the camera while reading the speech. The speaker, teleprompter, camera and tripod are supported on the same axis, which creates a sense of intimacy that the speaker always faces the audience and improves the quality of the speech.
[0003] The existing teleprompter has a complex structure, looks bulky overall, and has poor stability. A new teleprompter is needed to solve the above problems.
[0004] In view of the above problems, the utility model patent with the authorization announcement number CN211779859U discloses a speech type teleprompter, including a glass clamp, a telescopic sleeve, a box, a traction device, a display tray and a glass, one end of the glass clamp is connected to the glass; the lower part of the telescopic sleeve is connected to the display tray and the box, and the display tray is located above the box; the traction device is arranged in the box, and a plastic rod is wound on the traction device, and one end of the plastic rod passes through the telescopic sleeve and is connected to the other end of the glass clamp. The traction device includes a hollow wheel, a conduit, a motor and a driving gear, the motor is connected to the box, the hollow wheel is rotatably connected to the box, the driving gear is meshed with the inner ring of the hollow wheel, and the motor shaft of the motor is connected to the driving gear, so that the motor can control the rotation of the hollow wheel through the driving gear; the conduit is fixed between the hollow wheel and the telescopic sleeve, the other end of the plastic rod is wound on the hollow wheel, and one end of the plastic rod passes through the conduit and the telescopic sleeve in sequence and is connected to the other end of the glass clamp.
[0005] Although the above-mentioned prior art provides a solution, its traction device is relatively simple. In the process of driving the telescopic sleeve, the catheter may be bent due to the force, resulting in inaccurate height control of the glass. Therefore, it is necessary to further improve the above-mentioned prior art. Summary of the invention
[0006] The purpose of the present invention is to provide an automatic lifting teleprompter to solve the above problems existing in the prior art.
[0007] In order to achieve the above object, the present invention adopts the following technical solutions:
[0008] An automatic lifting teleprompter comprises a glass clamping plate, a telescopic sleeve rod, a box body, a traction device and a glass installed at one end of the glass clamping plate, the upper part of the telescopic sleeve rod is connected to the glass clamping plate, the lower part of the telescopic sleeve rod is connected to the box body, and the traction device is arranged in the box body; the traction device comprises a flexible rack, a traction motor and a first gear set driven by the traction motor, a rack storage bin is arranged in the box body, a rack receiving opening is arranged on the rack storage bin, an arc-shaped guide seat is arranged between the rack receiving opening and the telescopic sleeve rod, a central shaft is rotatably connected in the rack storage bin, one end of the flexible rack is connected to the central shaft and is rolled up in the rack storage bin outside the central shaft, the other end of the flexible rack passes through the arc-shaped guide seat and is arranged inside the telescopic sleeve rod, and the other end of the flexible rack abuts against the glass clamping plate;
[0009] One end of the first gear set is coaxially connected to the central shaft, and the other end of the first gear set is meshed with the flexible rack, so as to press the flexible rack against the arc guide seat through the other end of the first gear set and drive the flexible rack to slide on the arc guide seat.
[0010] As a preferred technical solution in the present invention, the first gear group includes a first gear arranged at one end thereof and a third gear arranged at the other end thereof, the first gear and the third gear are both meshed with the second gear, the first gear is coaxially connected to the central rotating shaft, the second gear is rotatably connected in the box, the third gear is coaxially connected to the eighth gear, and the third gear and the eighth gear are both installed on the motor shaft of the traction motor, and the eighth gear is meshed with the flexible rack.
[0011] As a preferred technical solution in the present invention, the gear ratio of the eighth gear, the third gear, the second gear and the first gear is 23:19:48:72.
[0012] As a preferred technical solution in the present invention, a second gear group and a potentiometer for controlling the traction motor to stop running are also installed in the box, one end of the second gear group is meshed with a flexible rack, the flexible rack is clamped on the arc guide seat and one end of the second gear group, and the flexible rack can drive one end of the second gear group to rotate when sliding on the arc guide seat; the other end of the second gear group is coaxially connected to the rotating shaft of the potentiometer.
[0013] As a preferred technical solution in the present invention, the second gear group includes a fourth gear located at one end thereof and a seventh gear located at the other end thereof, the fourth gear is meshed with the flexible rack, and the seventh gear is coaxially connected to the rotating shaft of the potentiometer; the fourth gear is meshed with the fifth gear, the seventh gear is meshed with the sixth gear, the fifth gear is coaxially connected to the sixth gear, and the fourth gear, the fifth gear, the sixth gear and the seventh gear are all rotatably connected in the box body; the fourth gear is arranged below the telescopic sleeve, and the other end of the first gear group is arranged at the rack storage opening of the rack storage bin.
[0014] As a preferred technical solution in the present invention, a processor is also provided in the box, and the processor is electrically connected to the potentiometer and the traction motor.
[0015] As a preferred technical solution in the present invention, the glass clamp includes a clamp mounting seat, a clamp, a clamp connecting rod and a vertical adjustment rod. The clamp mounting seat is installed on the upper end of the telescopic sleeve rod, one end of the clamp connecting rod is rotatably connected to the clamp mounting seat, and the other end of the clamp connecting rod is fixedly connected to the clamp, and the glass is installed on the clamp; the upper end of the vertical adjustment rod is movably connected to the middle part of the clamp connecting rod, the lower part of the vertical adjustment rod passes through the clamp mounting seat and is slidably connected to the telescopic sleeve rod, and the lower end of the vertical adjustment rod is abutted against the other end of the flexible rack.
[0016] As a preferred technical solution in the present invention, a limiting hole located below the splint mounting seat is provided in the telescopic sleeve rod, and the lower end of the vertical adjustment rod passes through the limiting hole; an annular limiting plate is fixed on the vertical adjustment rod, and the annular limiting plate is located between the limiting hole and the splint mounting seat, and a spring is also sleeved on the vertical adjustment rod, and the two ends of the spring are respectively connected to the annular limiting plate and the limiting hole, and when the annular limiting plate is abutted against the splint mounting seat or the splint connecting rod is rotated to the maximum angle, the spring is in a stretched state.
[0017] As a preferred technical solution in the present invention, the upper end of the vertical adjustment rod is fixedly connected with a U-shaped seat, the U-shaped seat is rotatably connected with a limiting ring, and the middle part of the clamping plate connecting rod passes through the limiting ring.
[0018] As a preferred technical solution in the present invention, the flexible rack is a nylon rack.
[0019] Beneficial effect: In actual use of the present invention, the forward rotation of the traction motor can drive the first gear group to move in a certain way, and then the other end of the first gear group can drive the flexible rack to slide stably along the arc-shaped guide seat, so that the flexible rack can lift the glass clamping plate to achieve glass height adjustment, and the cooperation between the first gear group and the arc-shaped guide seat can also make the sliding of the flexible rack more stable, avoiding its bending and affecting the precise adjustment of the glass height; conversely, the reverse rotation of the traction motor can drive the first gear group to move in the opposite direction, and then the central shaft can be driven to rotate through one end of the first gear group, so as to achieve the winding of the flexible rack, and the glass clamping plate can also drive the glass to descend. In the process of glass height adjustment, the precise adjustment of the glass height can be achieved through precise control of the traction motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a three-dimensional schematic diagram of the present invention;
[0021] Figure 2 for Figure 1 A magnified schematic diagram of part A;
[0022] Figure 3 This is a main view of the box body of the present invention after being cut away;
[0023] Figure 4 This is a cross-sectional view of the telescopic sleeve rod of the present invention;
[0024] Figure 5 It is a schematic diagram of the first gear set and the second gear set in the invention.
[0025] In the figure: 1-glass clamp; 101-clamp mounting seat; 102-clamp; 103-clamp connecting rod; 104-vertical adjustment rod; 105-annular limit plate; 106-spring; 107-U-shaped seat; 108-limiting ring; 2-telescopic sleeve; 3-box; 301-rack storage bin; 302-arc guide seat; 303-center shaft; 4-traction device; 401-flexible rack; 402-traction motor; 403-first gear; 404-second gear; 405-third gear; 406-potentiometer; 407-fourth gear; 408-fifth gear; 409-sixth gear; 410-seventh gear; 411-eighth gear; 5-glass. DETAILED DESCRIPTION
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.
[0027] Example:
[0028] like Figure 1-Figure 5 As shown, the present embodiment provides an automatic lifting teleprompter, comprising a glass clamp 1, a telescopic sleeve rod 2, a box body 3, a traction device 4 and a glass 5 installed at one end of the glass clamp 1. The installation method of the glass 5 on the glass clamp 1 is the same as that of the box body in the prior art, and no specific limitation is made. The upper part of the telescopic sleeve rod 2 is connected to the glass clamp 1, and the lower part of the telescopic sleeve rod 2 is connected to the box body 3 to ensure the stability of the telescopic sleeve rod 2 and the glass clamp 1. The traction device 4 is arranged in the box body 3; the traction device 4 comprises a flexible rack 401, a traction motor 402 and a first gear set driven by the traction motor 402, a rack storage bin 301 is arranged in the box body 3, a rack receiving and releasing opening is arranged on the rack storage bin 301, which serves as the inlet and outlet of the flexible rack 401, an arc-shaped guide seat 302 is arranged between the rack receiving and releasing opening and the telescopic sleeve rod 2, and the rack storage bin The center shaft 303 is rotatably connected in 301, one end of the flexible rack 401 is connected to the center shaft 303 and is rolled up in the rack storage bin 301 outside the center shaft 303, and then the flexible rack 401 is regularly rolled up, so that the flexible rack 401 can be easily retracted and extended, and the other end of the flexible rack 401 is passed through the arc guide seat 302 and then penetrated into the telescopic sleeve 2. The arc guide seat 302 serves as a limit to ensure the stability of the flexible rack 401 when moving and prevent the flexible rack 401 from bending. The other end of the flexible rack 401 is in contact with the glass clamping plate 1, and then the glass clamping plate 1 is driven to rise by the rise of the other end of the flexible rack 401. After the other end of the flexible rack 401 drops, the glass clamping plate 1 can also drive the telescopic sleeve 2 to contract under the action of gravity, so that the glass clamping plate 1 can drop.
[0029] To further refine, one end of the first gear group is coaxially connected to the central shaft 303, and the rotation of the central shaft 303 can be controlled by the first gear group. The rotation of the central shaft 303 can realize the winding of the flexible rack 401, and the other end of the first gear group is meshed with the flexible rack 401, so as to press the flexible rack 401 against the arc guide seat 302 through the other end of the first gear group and drive the flexible rack 401 to slide on the arc guide seat 302, and then when the traction motor 402 is started, it can be understood that the traction motor 402 rotates forward, and the other end of the first gear group drives the flexible rack 401 to move, so as to realize the lifting of the glass splint 1, and the traction motor 402 reverses to control the central shaft 303 to wind up the flexible rack 401.
[0030] In actual use of the present invention, the forward rotation of the traction motor 402 can drive the first gear group to move in a certain manner, and then the other end of the first gear group can drive the flexible rack 401 to slide stably along the arc guide seat 302, so that the flexible rack 401 can lift the glass clamping plate 1 to achieve height adjustment of the glass 5, and the cooperation between the first gear group and the arc guide seat 302 can also make the sliding of the flexible rack 401 more stable, avoiding its bending and affecting the precise adjustment of the height of the glass 5; conversely, the reverse rotation of the traction motor 402 can drive the first gear group to move in the opposite direction, and then drive the central shaft 303 to rotate through one end of the first gear group, so as to achieve the winding of the flexible rack 401, and also enable the glass clamping plate 1 to drive the glass 5 to descend. In the process of adjusting the height of the glass 5, the precise adjustment of the height of the glass 5 can be achieved by precisely controlling the traction motor 402.
[0031] As a preferred implementation scheme in this embodiment, it needs to be further explained that the first gear group includes a first gear 403 arranged at one end thereof and a third gear 405 arranged at the other end thereof, and the first gear 403 and the third gear 405 are both meshed with the second gear 404, so that the first gear 403 and the third gear 405 can be ensured to always maintain synchronous rotation in the same direction, the first gear 403 is coaxially connected to the central shaft 303, the second gear 404 is rotatably connected in the box body 3, the third gear 405 is coaxially connected with the eighth gear 411, and the third gear 405 and the eighth gear 411 are both installed on the motor shaft of the traction motor 402, and the eighth gear 411 is meshed with the flexible rack 401, the traction motor 402 can control the eighth gear 411 and the first gear 403, thereby easily and stably realizing the retraction and extension of the flexible rack 401.
[0032] As a preferred implementation scheme in this embodiment, it needs to be further explained that the gear ratio of the eighth gear 411, the third gear 405, the second gear 404 and the first gear 403 is 23:19:48:72. Through this gear ratio, the first gear group can stably control the retraction and extension of the flexible rack 401.
[0033] As a preferred implementation scheme in this embodiment, it needs to be further explained that a second gear group and a potentiometer 406 for controlling the traction motor 402 to stop running are also installed in the box body 3. One end of the second gear group is meshed with the flexible rack 401. The flexible rack 401 is clamped on the arc guide seat 302 and one end of the second gear group, and the flexible rack 401 can drive one end of the second gear group to rotate when sliding on the arc guide seat 302; the other end of the second gear group is coaxially connected to the rotating shaft of the potentiometer 406, so that the movement of the flexible rack 401 can be linked to the potentiometer 406, so that the resistance value of the potentiometer 406 changes. When the resistance value of the potentiometer 406 reaches the preset value, it means that the glass 5 has reached the specified height. At this time, the potentiometer 406 is linked to the traction motor 402, so that the traction motor 402 stops running, thereby accurately controlling the height of the glass 5.
[0034] As a preferred implementation scheme in this embodiment, it needs to be further explained that the second gear set includes a fourth gear 407 located at one end thereof and a seventh gear 410 located at the other end thereof, the fourth gear 407 is meshed with the flexible rack 401, and the seventh gear 410 is coaxially connected with the rotating shaft of the potentiometer 406, so that the seventh gear 410 can drive the rotating shaft of the potentiometer 406 to rotate when rotating, thereby realizing the resistance adjustment of the potentiometer 406; the fourth gear 407 is meshed with the fifth gear 408, the seventh gear 410 is meshed with the sixth gear 409, and the fifth gear 40 8 is coaxially connected with the sixth gear 409, the fifth gear 408 and the sixth gear 409 are fixed on the same rotating shaft, the rotating shaft is rotatably connected in the box body 3, and the fourth gear 407, the fifth gear 408, the sixth gear 409 and the seventh gear 410 are all rotatably connected in the box body 3, so that the second gear group forms an overall structure of synchronous action; the fourth gear 407 is arranged below the telescopic sleeve 2, and the other end of the first gear group is arranged at the rack receiving and releasing opening of the rack storage compartment 301, and the two cooperate to limit the flexible rack 401, so that the sliding of the flexible rack 401 is more stable.
[0035] As a preferred implementation scheme in this embodiment, it needs to be further explained that a processor is also provided in the box body 3, and the processor is electrically connected to the potentiometer 406 and the traction motor 402. The resistance value information of the potentiometer 406 is pushed to the processor in real time, and then the traction motor 402 is controlled by the processor. This method is a prior art and will not be further explained in detail.
[0036] As a preferred implementation scheme in this embodiment, it needs to be further explained that the glass clamping plate 1 includes a clamping plate mounting seat 101, a clamping plate 102, a clamping plate connecting rod 103 and a vertical adjustment rod 104. The clamping plate mounting seat 101 is installed on the upper end of the telescopic sleeve rod 2, so that the upper end of the telescopic sleeve rod 2 and the clamping plate mounting seat 101 can move synchronously. When the clamping plate mounting seat 101 rises, it can directly drive the telescopic sleeve rod 2 to unfold. One end of the clamping plate connecting rod 103 is rotatably connected to the clamping plate mounting seat 101, and the other end of the clamping plate connecting rod 103 is fixedly connected to the clamping plate 102. The glass 5 is installed on the clamping plate 102; the vertical adjustment rod 104 The upper end of 04 is movably connected with the middle part of the splint connecting rod 103, the lower part of the vertical adjustment rod 104 passes through the splint mounting seat 101 and is slidably connected in the telescopic sleeve rod 2, the lower end of the vertical adjustment rod 104 abuts against the other end of the flexible rack 401, the flexible rack 401 pushes the vertical adjustment rod 104 upward, and the vertical adjustment rod 104 pushes the splint connecting rod 103 upward at the middle part of the splint connecting rod 103, so that the splint connecting rod 103 is tilted, thereby adjusting the glass 5 to a preset tilt angle, and at the same time, the splint connecting rod 103 drives the telescopic sleeve rod 2 to extend through the splint mounting seat 101, so as to realize the height adjustment of the glass 5.
[0037] As a preferred implementation scheme in this embodiment, it needs to be further explained that a limiting hole located below the clamp mounting seat 101 is provided in the telescopic sleeve rod 2, and the lower end of the vertical adjustment rod 104 passes through the limiting hole; an annular limiting plate 105 is fixed on the vertical adjustment rod 104, and the annular limiting plate 105 is located between the limiting hole and the clamp mounting seat 101, and a spring 106 is also sleeved on the vertical adjustment rod 104, and the two ends of the spring 106 are respectively connected to the annular limiting plate 105 and the limiting hole. When the annular limiting plate 105 is abutted against the clamp mounting seat 101 or the clamp connecting rod 103 is rotated to the maximum angle (the two can be reached synchronously or asynchronously, and can be adjusted according to actual conditions), the spring 106 is in a stretched state, and then when the flexible rack 401 is rolled up, the spring 106 can drive the vertical adjustment rod 104 to move downward, and the vertical adjustment rod 104 drives the glass 5 to reset through the clamp connecting rod 103, which can make the overall volume smaller, and thus more conducive to the storage of the equipment.
[0038] As a preferred implementation scheme in this embodiment, it needs to be further explained that the upper end of the vertical adjustment rod 104 is fixedly connected with a U-shaped seat 107, and the U-shaped seat 107 is rotatably connected with a limiting ring 108. The middle part of the splint connecting rod 103 passes through the limiting ring 108, so that the lifting and lowering of the vertical adjustment rod 104 can flexibly adjust the inclination angle of the splint connecting rod 103.
[0039] As a preferred implementation scheme in this embodiment, it needs to be further explained that the flexible rack 401 is a nylon rack, which has a certain stability and can push the glass splint 1, and has a certain flexibility and can be rolled up in the rack storage bin 301, thereby reducing the overall volume.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An automatic lifting teleprompter, comprising a glass clamping plate (1), a telescopic sleeve rod (2), a box (3), a traction device (4), and a glass (5) installed at one end of the glass clamping plate (1), wherein the upper part of the telescopic sleeve rod (2) is connected to the glass clamping plate (1), the lower part of the telescopic sleeve rod (2) is connected to the box (3), and the traction device (4) is arranged in the box (3); characterized in that: The traction device (4) comprises a flexible rack (401), a traction motor (402) and a first gear set driven by the traction motor (402); a rack storage bin (301) is arranged in the housing (3); a rack storage opening is arranged on the rack storage bin (301); an arc-shaped guide seat (302) is arranged between the rack storage opening and the telescopic sleeve (2); a central shaft (303) is rotatably connected in the rack storage bin (301); one end of the flexible rack (401) is connected to the central shaft (303) and is rolled up in the rack storage bin (301) outside the central shaft (303); the other end of the flexible rack (401) passes through the arc-shaped guide seat (302) and is arranged inside the telescopic sleeve (2); and the other end of the flexible rack (401) is in contact with the glass clamping plate (1); One end of the first gear set is coaxially connected to the central rotating shaft (303), and the other end of the first gear set is meshed with the flexible rack (401), so that the flexible rack (401) is pressed against the arc-shaped guide seat (302) through the other end of the first gear set and drives the flexible rack (401) to slide on the arc-shaped guide seat (302).
2. The automatic lifting teleprompter according to claim 1, characterized in that: The first gear group comprises a first gear (403) arranged at one end thereof and a third gear (405) arranged at the other end thereof, the first gear (403) and the third gear (405) are both meshed with the second gear (404), the first gear (403) is coaxially connected to the central shaft (303), the second gear (404) is rotatably connected in the housing (3), the third gear (405) is coaxially connected to the eighth gear (411), the third gear (405) and the eighth gear (411) are both mounted on the motor shaft of the traction motor (402), and the eighth gear (411) is meshed with the flexible rack (401).
3. The automatic lifting teleprompter according to claim 2, characterized in that: The gear ratio of the eighth gear (411), the third gear (405), the second gear (404) and the first gear (403) is 23:19:48:
72.
4. An automatic lifting teleprompter according to any one of claims 1-3, characterized in that: A second gear set and a potentiometer (406) for controlling the traction motor (402) to stop running are also installed in the box body (3); one end of the second gear set is meshed with a flexible rack (401); the flexible rack (401) is clamped between the arc-shaped guide seat (302) and one end of the second gear set; and the flexible rack (401) can drive one end of the second gear set to rotate when sliding on the arc-shaped guide seat (302); the other end of the second gear set is coaxially connected to the rotating shaft of the potentiometer (406).
5. The automatic lifting teleprompter according to claim 4, characterized in that: The second gear group includes a fourth gear (407) located at one end thereof and a seventh gear (410) located at the other end thereof, the fourth gear (407) is meshed with the flexible rack (401), and the seventh gear (410) is coaxially connected to the rotating shaft of the potentiometer (406); the fourth gear (407) is meshed with the fifth gear (408), the seventh gear (410) is meshed with the sixth gear (409), the fifth gear (408) is coaxially connected to the sixth gear (409), and the fourth gear (407), the fifth gear (408), the sixth gear (409) and the seventh gear (410) are all rotatably connected in the box body (3); the fourth gear (407) is arranged below the telescopic sleeve (2), and the other end of the first gear group is arranged at the rack storage opening of the rack storage bin (301).
6. The automatic lifting teleprompter according to claim 4, characterized in that: A processor is also provided in the box (3), and the processor is electrically connected to the potentiometer (406) and the traction motor (402).
7. An automatic rising and falling teleprompter according to any one of claims 1-3, characterized in that: The glass clamp (1) comprises a clamp mounting seat (101), a clamp (102), a clamp connecting rod (103) and a vertical adjustment rod (104); the clamp mounting seat (101) is mounted on the upper end of the telescopic sleeve rod (2); one end of the clamp connecting rod (103) is rotatably connected to the clamp mounting seat (101); the other end of the clamp connecting rod (103) is fixedly connected to the clamp (102); the glass (5) is mounted on the clamp (102); the upper end of the vertical adjustment rod (104) is movably connected to the middle part of the clamp connecting rod (103); the lower part of the vertical adjustment rod (104) passes through the clamp mounting seat (101) and is slidably connected to the telescopic sleeve rod (2); the lower end of the vertical adjustment rod (104) is in contact with the other end of the flexible rack (401).
8. The automatic lifting teleprompter according to claim 7, characterized in that: A limiting hole located below the clamping plate mounting seat (101) is arranged in the telescopic sleeve rod (2), and the lower end of the vertical adjustment rod (104) passes through the limiting hole; an annular limiting plate (105) is fixed on the vertical adjustment rod (104), and the annular limiting plate (105) is located between the limiting hole and the clamping plate mounting seat (101); a spring (106) is also sleeved on the vertical adjustment rod (104), and the two ends of the spring (106) are respectively connected to the annular limiting plate (105) and the limiting hole; when the annular limiting plate (105) is in contact with the clamping plate mounting seat (101) or the clamping plate connecting rod (103) is rotated to the maximum angle, the spring (106) is in a stretched state.
9. The automatic rising and falling teleprompter according to claim 7, characterized in that: The upper end of the vertical adjustment rod (104) is fixedly connected to a U-shaped seat (107), a limiting ring (108) is rotatably connected inside the U-shaped seat (107), and the middle part of the clamping plate connecting rod (103) passes through the limiting ring (108).
10. The automatic lifting teleprompter according to claim 1, characterized in that: The flexible rack (401) is a nylon rack.