Page turning device and broadcast hosting teleprompter
By designing a page turning device for broadcasting and hosting, and using a motor to drive the page turning board to realize automatic page turning of manuscript paper, the problems of easy damage and frequent maintenance of the display screen in the prior art are solved, and the effect of saving costs and improving reading effect is achieved.
Patent Information
- Application Number
- CN202510030750.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-03-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing broadcasting and hosting telescope is prone to wear when using the display screen and glass, and requires frequent maintenance, resulting in waste of funds. At the same time, the display screen is not a necessity when practicing or recording the broadcasting and hosting.
A page turning device is designed, including a fixed assembly and a drive assembly, and the rotation shaft, a page turning rod and a drive plate are driven by a first motor to realize the rotation of the page turning board, thereby completing the page turning of the paper.
It avoids wear and maintenance problems when using the display screen and glass, saves money for purchasing equipment, and reduces the frequency of equipment maintenance, while improving the reading effect of the broadcast host and the effect of broadcast recording or practice.
Smart Images

Figure CN119659203A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of teleprompter devices, in particular to a page turning device and a teleprompter for broadcasting and hosting. Background Art
[0002] The teleprompter is a professional auxiliary device that can help announcers and hosts read manuscripts fluently in front of the camera without having to look down at the script in their hands, thereby improving the professionalism and viewing experience of the program.
[0003] Existing teleprompters for broadcasters and hosts often use a display screen and optical glass to display the script content to the host through the principle of optical reflection. However, the display screen and glass are easily damaged and require frequent maintenance and repair. In addition, when practicing or recording broadcasters and hosts, a display screen is not a rigid requirement. It is entirely possible to use paper manuscripts in conjunction with a page-turning device to achieve the effect of reading the process in front of the camera.
[0004] Therefore, a page turning device and a teleprompter for announcing and hosting are proposed in view of the above problems. Summary of the invention
[0005] In order to make up for the deficiencies of the prior art and solve the problem that display screens and glass are easily worn out during use, require frequent maintenance, and cause waste of funds, the present invention proposes a page turning device and a teleprompter for broadcasting and hosting.
[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the page turning device and the teleprompter for broadcasting and hosting described in the present invention include a first chassis; the top of the first chassis is provided with a fixing component for placing manuscript paper; The fixing assembly includes a rotating shaft arranged at the top of the first chassis, the bottom end of the rotating shaft is connected to a first motor, the first motor is connected to an external power source through a wire, the outer wall of the bottom end of the rotating shaft is provided with a positioning assembly for fixing the position of a page turning plate, the circumference of the rotating shaft is evenly rotatably mounted with a page turning plate, both sides of the page turning plate are fixedly mounted with a clamping device, and the top end of the rotating shaft is provided with a driving assembly for realizing page turning of manuscript paper; The driving assembly comprises a page turning rod arranged at the top end of the rotating shaft, a driving plate is rotatably mounted on the bottom end of the page turning rod away from one end of the rotating shaft, and a torsion spring is arranged at the connection between the page turning rod and the driving plate.
[0007] Preferably, guide blocks are fixedly installed at both ends of the page turning plate close to the rotating shaft, and the guide blocks are slidably installed on the inner wall of the guide groove, and the guide groove is opened on one side of the rotating shaft; the page turning plate can be rotatably connected to the rotating shaft, and the moving trajectory of the page turning plate can be guided and restricted by the guide blocks and the guide groove, so that the rotation of the page turning plate is smoother.
[0008] Preferably, the positioning assembly includes a driving gear arranged on the outer wall of the bottom end of the rotating shaft, a connecting gear is meshingly installed on one side of the driving gear, a positioning gear is meshingly installed on one side of the connecting gear, a positioning groove is opened on the top of the positioning gear, a rolling assembly for smoothing the surface of the manuscript paper is arranged on one side of the positioning groove, a positioning block is abutted against the inner wall of the positioning groove, and the positioning block is slidably installed on the inner wall of the first chassis; it can avoid the problem that the page turning plate deflects when displaying the manuscript paper, affecting the reading effect of the host, and improves the stability and reliability of the page turning device.
[0009] Preferably, a torsion barrier plate is rotatably installed at the top end of the first chassis away from one end of the positioning block, and a torsion spring is provided at the connection between the torsion barrier plate and the first chassis; it can cooperate with the driving plate to limit one of the page turning plates, thereby limiting the page turning plate on the side of the positioning block through the mutual abutment of one end of the page turning plate, thereby further improving the stability of the page turning plate for displaying paper manuscripts.
[0010] Preferably, the rolling assembly includes a pressure sensor and a second motor arranged on one side of the positioning groove, the second motor is fixedly mounted on the inner wall of the first chassis, the second motor is connected to the outside through a wire, a reciprocating screw is fixedly mounted on the output end of the second motor, the reciprocating screw is rotatably mounted on the top of the first chassis, a slider is threadedly mounted on the outer wall of the reciprocating screw, a connecting bent rod is fixedly mounted on one side of the slider, a rotating rod is rotatably mounted on the other end of the connecting bent rod, the rotating rod is slidably mounted on the top of the reset slide groove, and the reset slide groove is opened at the top of the first chassis; when the positioning block leaves the positioning groove and the obstruction to the page turning plate is restored, the manuscript paper on one side of the page turning plate can be squeezed and smoothed.
[0011] Preferably, the distance between the two ends of the positioning groove is greater than the distance between the two ends of the positioning block, so that the positioning block can stay in the positioning groove for a period of time, so that the page turning plate on one side of the positioning block has sufficient time to move to the other side of the positioning block.
[0012] Preferably, the driving gear, connecting gear and positioning gear have the same size; the angular velocity of the positioning gear can be made the same as the angular velocity of the page turning rod, so that the operating frequencies of the driving component and the positioning component remain consistent, thereby improving the stability and reliability of the page turning device.
[0013] A teleprompter for broadcasting and hosting includes a page turning device and a second chassis; the second chassis is fixedly installed on the bottom end of the first chassis, a bracket is fixedly installed on the bottom end of the second chassis, a dustproof focusing plate is fixedly installed on the top end of the second chassis, a top cover is sleeved on the top end of the dustproof focusing plate, a lighting assembly is arranged at the bottom end of the top cover, and a camera device is installed on the top end of the top cover.
[0014] The present invention is beneficial in that: 1. The present invention cooperates with a fixing component and a driving component. When the announcer needs to perform broadcast recording or practice, the manuscript can be fixed by the fixing component, and the first motor can be started when the page needs to be turned. The first motor can be started by remote control, or by an assistant, or the first motor can be set to start intermittently at a fixed frequency, so as to achieve a training effect, so that the first motor drives the page turning plate to rotate through the rotating shaft, the page turning rod and the driving plate, thereby completing the page turning, avoiding the problem of easy wear and tear of the display screen and glass when using, requiring frequent maintenance, and causing waste of funds, saving the capital consumption of purchasing equipment, and reducing the frequency of equipment maintenance; 2. The present invention sets a rolling assembly. When the positioning block leaves the positioning slot and resumes the obstruction to the page turning plate, the pressure sensor senses that the pressure on one side of the positioning slot is zero. At this time, the pressure sensor sends a signal to control the start of the second motor. The second motor drives the rotating rod to rotate to one side of the page turning plate through the reciprocating screw, the slider and the connecting curved rod, and moves on one side of the page turning plate, thereby squeezing and smoothing the manuscript paper on one side of the page turning plate, avoiding the problem of wrinkles on the manuscript paper after bending, which causes a decrease in the reading effect of the host, improves the reading effect of the broadcast host, and thus improves the effect of broadcast recording or practice. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0016] Figure 1 This is a schematic diagram of the main structure of the teleprompter for broadcasting and hosting of the present invention; Figure 2 It is a schematic diagram of the main structure of the page turning device of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the positioning component of the present invention; Figure 4 For the present invention Figure 3 The enlarged view of point A in the middle; Figure 5 For the present invention Figure 3 The enlarged view of point B in the middle; Figure 6 It is a schematic diagram of the cross-sectional structure of the driving component of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle; Figure 8 For the present invention Figure 7 Enlarged view of point D in the middle.
[0017] In the figure: 1. first chassis; 2. rotating shaft; 3. page turning plate; 4. page turning rod; 5. driving plate; 6. guide block; 7. guide groove; 8. driving gear; 9. connecting gear; 10. positioning gear; 11. positioning groove; 12. positioning block; 13. torque blocking plate; 14. pressure sensor; 15. reciprocating screw; 16. slider; 17. connecting curved rod; 18. rotating rod; 19. reset slide groove; 20. second chassis; 21. bracket; 22. dustproof focusing plate; 23. top cover; 24. camera device. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0019] Embodiment 1 See also Figures 1 to 8 As shown, a page turning device and a teleprompter for a broadcast host include a first chassis 1; a fixing component for placing manuscript paper is arranged on the top of the first chassis 1; The fixing assembly includes a rotating shaft 2 arranged at the top of the first chassis 1, the bottom end of the rotating shaft 2 is connected to a first motor, the first motor is connected to an external power supply through a wire, the outer wall of the bottom end of the rotating shaft 2 is provided with a positioning assembly for fixing the position of the page turning plate 3, the circumference of the rotating shaft 2 is evenly rotatably installed with the page turning plate 3, both sides of the page turning plate 3 are fixedly installed with a clamping device, and the top end of the rotating shaft 2 is provided with a driving assembly for realizing the turning of manuscript paper; The driving assembly includes a page-turning rod 4 arranged at the top of the rotating shaft 2, and a driving plate 5 is rotatably installed at the bottom end of the page-turning rod 4 away from one end of the rotating shaft 2. A torsion spring is provided at the connection between the page-turning rod 4 and the driving plate 5, which can abut against the page-turning plate 3 through the driving plate 5, thereby driving the page-turning plate 3 to rotate and turn pages, and when the position of the page-turning plate 3 is fixed, the driving plate 5 abuts against the page-turning plate 3 and can rotate, avoiding the problem of motion interference caused by the abutment between the driving plate 5 and the page-turning plate 3, so that the page-turning rod 4 can continue to rotate.
[0020] See also Figure 2 As shown, guide blocks 6 are fixedly installed at both ends of the page turning plate 3 close to the rotating shaft 2. The guide blocks 6 are slidably installed on the inner wall of the guide groove 7. The guide groove 7 is opened on one side of the rotating shaft 2, so that the page turning plate 3 can be rotatably connected to the rotating shaft 2. The moving trajectory of the page turning plate 3 is guided and restricted by the guide blocks 6 and the guide groove 7, so that the rotation of the page turning plate 3 is smoother.
[0021] To sum up, through the coordination of the fixing component and the driving component, when the announcer needs to record or practice broadcasting, the manuscript can be fixed by the fixing component, and the first motor can be started when the page needs to be turned, wherein the first motor can be started by remote control, or can be operated by an assistant on the side, or the first motor can be set to start intermittently at a fixed frequency, so as to achieve a training effect, so that the first motor drives the page turning plate 3 to rotate through the rotating shaft 2, the page turning rod 4 and the driving plate 5, thereby completing the page turning, avoiding the problem of easy wear and tear of the display screen and glass when using, the need for frequent maintenance, and the waste of funds, saving the capital expenditure for purchasing equipment, and reducing the frequency of equipment maintenance.
[0022] Embodiment 2 See also Figure 3 , Figure 5 and Figure 6 As shown, compared with Example 1, as another embodiment of the present invention, the positioning component includes a driving gear 8 arranged on the outer wall of the bottom end of the rotating shaft 2, one side of the driving gear 8 is meshingly installed with a connecting gear 9, one side of the connecting gear 9 is meshingly installed with a positioning gear 10, the top of the positioning gear 10 is provided with a positioning groove 11, one side of the positioning groove 11 is provided with a rolling component for smoothing the surface of the manuscript paper, the inner wall of the positioning groove 11 is abutted with a positioning block 12, and the positioning block 12 is slidably installed on the inner wall of the first chassis 1. By setting the positioning component, when reading the manuscript, the positioning block 12 abuts against the page turning plate 3, so as to avoid the page turning plate 3 from deflecting when displaying the manuscript, which affects the reading effect, and improves the stability and reliability of the page turning device.
[0023] See also Figure 6 As shown, a torque blocking plate 13 is rotatably installed at the top end of the first chassis 1 away from the positioning block 12, and a torsion spring is provided at the connection between the torque blocking plate 13 and the first chassis 1, which can cooperate with the driving plate 5 to limit one of the page turning plates 3, thereby limiting the page turning plate 3 on the side of the positioning block 12 through the mutual abutment of one end of the page turning plate 3, thereby further improving the stability of the page turning plate 3 for displaying paper manuscripts.
[0024] To summarize, by cooperating with the positioning assembly and the torque blocking plate 13, when the host is reading the manuscript, one of the page turning plates 3 for displaying the manuscript can be fixed and limited by the torque blocking plate 13 and the driving plate 5, so that the other page turning plate 3 for displaying the manuscript can be fixed and limited by the abutment between the page turning plates 3 and the positioning block 12, thereby avoiding the problem that the page turning plate 3 deflects when displaying the manuscript and affects the host's reading effect, thereby improving the stability and reliability of the page turning device.
[0025] See also Figure 3 , Figures 5 to 7As shown, the rolling assembly includes a pressure sensor 14 and a second motor arranged on one side of the positioning groove 11, the second motor is fixedly installed on the inner wall of the first chassis 1, the second motor is connected to the outside through a wire, a reciprocating screw 15 is fixedly installed on the output end of the second motor, the reciprocating screw 15 is rotatably installed on the top of the first chassis 1, a slider 16 is threadedly installed on the outer wall of the reciprocating screw 15, a connecting bent rod 17 is fixedly installed on one side of the slider 16, a rotating rod 18 is rotatably installed on the other end of the connecting bent rod 17, the rotating rod 18 is slidably installed on the top of the reset slide 19, and the reset slide 19 is opened at the top of the first chassis 1. By setting the rolling assembly When the positioning block 12 leaves the positioning slot 11 and resumes the obstruction to the page turning plate 3, the pressure sensor 14 senses that the pressure on one side of the positioning slot 11 is zero. At this time, the pressure sensor 14 sends a signal to control the start of the second motor. The second motor drives the rotating rod 18 to rotate to one side of the page turning plate 3 through the reciprocating screw rod 15, the slider 16 and the connecting curved rod 17, and moves on one side of the page turning plate 3, thereby squeezing and smoothing the manuscript paper on one side of the page turning plate 3, avoiding the problem of wrinkles on the manuscript paper after bending, which causes the host's reading effect to decline, improves the reading effect of the broadcast host, and thus improves the effect of broadcast recording or practice.
[0026] See also Figure 5 As shown, the distance between the two ends of the positioning groove 11 is greater than the distance between the two ends of the positioning block 12, so that the positioning block 12 can stay for a period of time after moving into the positioning groove 11, so that the page turning plate 3 on one side of the positioning block 12 has sufficient time to move to the other side of the positioning block 12, avoiding the problem of motion interference and improving the stability and reliability of the positioning component.
[0027] See also Figure 6 As shown, the driving gear 8, the connecting gear 9 and the positioning gear 10 have the same size, which can make the angular velocity of the positioning gear 10 the same as the angular velocity of the page turning rod 4, so that the operating frequency of the driving component and the positioning component are consistent, thereby improving the stability and reliability of the page turning device.
[0028] A teleprompter for broadcasting and hosting includes a page turning device and a second chassis 20; the second chassis 20 is fixedly installed on the bottom end of the first chassis 1, a bracket 21 is fixedly installed on the bottom end of the second chassis 20, a dustproof focusing plate 22 is fixedly installed on the top end of the second chassis 20, a top cover 23 is sleeved on the top end of the dustproof focusing plate 22, a lighting assembly is arranged at the bottom end of the top cover 23, and a camera device 24 is installed on the top end of the top cover 23.
[0029] Working principle: When it is necessary to perform broadcast recording or practice, the manuscript paper can be placed on one side of the page turning plate 3 in sequence and fixed with a clamping device, and then the top cover 23 is fixed to the top of the dustproof condenser plate 22, and the camera device 24 is fixed to the top of the top cover 23. At this time, the bracket 21 is adjusted to move the page turning plate 3 and the camera device 24 to a suitable position for broadcast recording or practice. At this time, the top of the first chassis 1 is divided into a viewing area and a rotation area; When the page turning plate 3 of the viewing area needs to turn pages, the first motor can be started, so that the first motor drives the rotating shaft 2 to rotate, the rotating shaft 2 drives the page turning rod 4 to rotate, the page turning rod 4 drives the driving plate 5 to rotate, and the driving plate 5 drives the page turning plate 3 to move, so that the page turning plate 3 drives the torque blocking plate 13 to rotate, so that the torque blocking plate 13 no longer blocks the movement of the page turning plate 3, and at the same time the rotating shaft 2 drives the driving gear 8 to rotate, the driving gear 8 drives the connecting gear 9 to rotate, the connecting gear 9 drives the positioning gear 10 to rotate, and the positioning gear 10 drives the positioning slot 11 to rotate, so that the positioning slot 11 moves to the bottom end of the positioning block 12, and the positioning block 12 moves into the positioning slot 11 under the action of gravity, so that the positioning block 12 stops The page turning plate 3 is prevented from moving. At this time, the driving plate 5 drives the page turning plate 3 to move, so that the page turning plate 3 close to one end of the torsion resistance plate 13 drives the page turning plate 3 close to one end of the positioning block 12 to rotate through the mutual contact between the page turning plates 3 in the rotating area. At the same time, the positioning gear 10 drives the positioning groove 11 to rotate, so that the inclined part of the positioning groove 11 abuts against the inclined part of the positioning block 12, thereby driving the positioning block 12 to move away from the positioning groove 11, and limiting the page turning plate 3. At this time, the rotating shaft 2 drives the driving plate 5 to rotate to one side of the page turning plate 3 in the viewing area, so that the driving plate 5 drives the page turning plate 3 to rotate to one side of the torsion resistance plate 13, completing the page turning of the page turning plate 3, so that the new manuscript paper is unfolded in front of the host; When the positioning block 12 completely leaves the positioning groove 11, the pressure sensor 14 senses that the pressure on one side of the positioning groove 11 is zero. At this time, the pressure sensor 14 generates a signal to start the second motor, so that the second motor drives the reciprocating screw 15 to rotate, and the reciprocating screw 15 drives the slider 16 to rotate, and the slider 16 drives the connecting crank 17 to rotate, and the connecting crank 17 drives the rotating rod 18 to rotate until it abuts against the manuscript paper on one side of the page turning plate 3. At this time, the reciprocating screw 15 drives the slider 16 to move, and the slider 16 drives the rotating rod 18 to move through the connecting crank 17, so that the rotating rod 18 squeezes and smoothes the manuscript paper. When the slider 16 moves to one end of the reset slide groove 19 close to the torsion blocking plate 13, the reciprocating screw 15 continues to rotate, driving the slider 16 to move in the direction away from the torsion blocking plate 13, and the slider 16 drives the connecting crank 17 to rotate, and the connecting crank 17 drives the rotating rod 18 to rotate until it abuts against the top of the reset slide groove 19. At this time, the slider 16 drives the rotating rod 18 to move through the connecting crank 17, thereby resetting the rolling assembly.
[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.
Claims
1. A page turning device, characterized in that: It comprises a first chassis (1); a fixing component for placing manuscript paper is arranged at the top of the first chassis (1); The fixing assembly comprises a rotating shaft (2) arranged at the top of the first chassis (1), the bottom end of the rotating shaft (2) is connected to a first motor, the first motor is connected to an external power source via a wire, the outer wall of the bottom end of the rotating shaft (2) is provided with a positioning assembly for fixing the position of a page turning plate (3), the circumference of the rotating shaft (2) is evenly rotatably mounted with a page turning plate (3), both sides of the page turning plate (3) are fixedly mounted with a clamping device, and the top end of the rotating shaft (2) is provided with a driving assembly for realizing page turning of manuscript paper; The driving assembly comprises a page turning rod (4) arranged at the top end of the rotating shaft (2); a driving plate (5) is rotatably mounted on the bottom end of the page turning rod (4) away from one end of the rotating shaft (2); and a torsion spring is arranged at the connection between the page turning rod (4) and the driving plate (5).
2. A page turning device according to claim 1, characterized in that: Guide blocks (6) are fixedly mounted on both ends of the page turning plate (3) close to the rotating shaft (2); the guide blocks (6) are slidably mounted on the inner wall of the guide groove (7); and the guide groove (7) is provided on one side of the rotating shaft (2).
3. A page turning device according to claim 1, characterized in that: The positioning assembly comprises a driving gear (8) arranged on the outer wall of the bottom end of the rotating shaft (2); a connecting gear (9) is meshedly mounted on one side of the driving gear (8); a positioning gear (10) is meshedly mounted on one side of the connecting gear (9); a positioning groove (11) is provided at the top of the positioning gear (10); a rolling assembly for smoothing the surface of manuscript paper is provided on one side of the positioning groove (11); a positioning block (12) is abutted against the inner wall of the positioning groove (11); and the positioning block (12) is slidably mounted on the inner wall of the first chassis (1).
4. A page turning device according to claim 3, characterized in that: A torsion blocking plate (13) is rotatably mounted on the top end of one end of the first chassis (1) away from the positioning block (12), and a torsion spring is provided at the connection between the torsion blocking plate (13) and the first chassis (1).
5. A page turning device according to claim 3, characterized in that: The rolling assembly comprises a pressure sensor (14) and a second motor arranged on one side of the positioning groove (11); the second motor is fixedly mounted on the inner wall of the first chassis (1); the second motor is connected to the outside through a wire; a reciprocating screw (15) is fixedly mounted on the output end of the second motor; the reciprocating screw (15) is rotatably mounted on the top of the first chassis (1); a slider (16) is threadedly mounted on the outer wall of the reciprocating screw (15); a connecting bent rod (17) is fixedly mounted on one side of the slider (16); a rotating rod (18) is rotatably mounted on the other end of the connecting bent rod (17); the rotating rod (18) is slidably mounted on the top of a reset slide groove (19); and the reset slide groove (19) is opened on the top of the first chassis (1).
6. A page turning device according to claim 3, characterized in that: The distance between the two ends of the positioning groove (11) is greater than the distance between the two ends of the positioning block (12).
7. A page turning device according to claim 3, characterized in that: The driving gear (8), the connecting gear (9) and the positioning gear (10) have the same size.
8. A teleprompter for broadcasting and hosting, characterized by: It comprises a page turning device and a second chassis (20) as claimed in claims 1 to 7; the second chassis (20) is fixedly mounted on the bottom end of the first chassis (1), a bracket (21) is fixedly mounted on the bottom end of the second chassis (20), a dustproof focusing plate (22) is fixedly mounted on the top end of the second chassis (20), a top cover (23) is sleeved on the top end of the dustproof focusing plate (22), a lighting assembly is arranged at the bottom end of the top cover (23), and a camera device (24) is installed on the top end of the top cover (23).
Citation Information
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