Eccentric spring friction plate damping mechanism for vehicle-mounted screen

Abstract

The utility model relates to a vehicle-mounted screen eccentric type spring friction plate damping mechanism which comprises an output rotating shaft assembly and a damping assembly, one end of the output rotating shaft assembly is provided with a screen fixing support, and the screen fixing support is used for being connected with a screen; the side, connected with the lower end face of the screen fixing support, of the output rotating shaft assembly is connected with the damping assembly. A magnetic braid is arranged at the other end of the output rotating shaft assembly, and the magnetic braid and the output rotating shaft assembly are arranged in a spaced mode and used for feeding back the rotating angle. The beneficial effects of the utility model are that the output rotating shaft assembly outputs torque to drive the display screen to rotate, and the damping assembly overcomes the torque generated by the acceleration on the screen when the vehicle is braked at a high speed or passes through a deceleration strip and the like in the driving process; the rotation angle of the output rotating shaft assembly is accurately fed back through the magnetic encoder arranged under the output rotating shaft assembly, so that the rotation angle of the screen is controlled, and the position angle of the damping assembly is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted display screens, in particular to an eccentric spring friction plate damping mechanism for a vehicle-mounted screen. Background Art

[0002] The damping of the vehicle display screen on the market currently; when the vehicle is driving and encounters an emergency, sudden braking or going over a speed bump, etc., excessive acceleration will be generated, and the screen damping is needed to provide a torque to overcome the acceleration on the screen, so as to solve the problem of screen deflection or shaking during sudden acceleration or deceleration. However, the damping of the vehicle display screen is currently affected by environmental factors, the torque size is severely attenuated or the damping torque changes greatly due to high and low temperatures, and cannot provide a stable holding torque; at the same time, the damping structure of the existing vehicle display screen cannot provide real-time feedback on the rotation angle, realize the control of the screen rotation angle and the damping rotation angle, and prevent the rotation angle range of the damping from being exceeded. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an eccentric spring friction plate damping mechanism for a vehicle-mounted screen, which solves any of the technical problems mentioned in the background technology. Compared with the existing technology, it can achieve a wider range of damping torque, the damping size is easy to control, the damping torque fluctuates little, is less affected by environmental factors, and has the advantages of long-term use and small torque attenuation.

[0004] The utility model solves the above technical problems with the following technical solutions: an eccentric spring friction plate damping mechanism for a vehicle-mounted screen, comprising: an output rotating shaft assembly and a damping assembly, wherein a screen fixing bracket is arranged at one end of the output rotating shaft assembly, and the screen fixing bracket is used to connect the screen;

[0005] The lower end surface of the screen fixing bracket is connected to the output rotating shaft assembly, and one side of the lower end surface of the screen fixing bracket is connected to the damping assembly;

[0006] A magnetic encoder is arranged at the other end of the output rotating shaft assembly, and the magnetic encoder is arranged at an interval from the output rotating shaft assembly for feeding back the rotation angle.

[0007] The beneficial effects of the utility model are as follows: the output torque of the output rotating shaft assembly drives the vehicle-mounted display screen to rotate, and when the vehicle is driving, when encountering situations such as sudden braking or going over a speed bump, the torque generated by the acceleration on the screen is overcome by the damping assembly, that is, the holding torque is provided by the damping assembly to solve the problem of deflection or shaking of the screen during sudden acceleration; the rotation angle of the output rotating shaft assembly is accurately fed back by the magnetic encoder arranged directly below the output rotating shaft assembly, thereby controlling the rotation angle of the screen, and at the same time ensuring the position angle of the damping assembly to prevent its rotation angle from being too large and exceeding the rotation angle range.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Further, the output rotating shaft assembly comprises: an output rotating shaft, an upper limit ring and a lower limit ring, wherein the upper limit ring and the lower limit ring are respectively sleeved on both sides of the output rotating shaft;

[0010] The output rotating shaft is also provided with a sector gear, and the sector gear is arranged between the upper limit ring and the lower limit ring.

[0011] The beneficial effects of adopting the above further scheme are: connecting the power output end through the fan gear located on the output rotating shaft, outputting the rotational torque to the output rotating shaft, and then driving the output rotating shaft to rotate; maintaining the verticality of the output rotating shaft through the upper limit ring and the lower limit ring, and limiting the up and down movement of the rotating output shaft; and accurately feeding back the rotation angle of the output shaft through the magnetic encoding, thereby controlling the rotation angle of the screen.

[0012] Furthermore, an O-ring is sleeved on the output rotating shaft at the connection between the upper limit ring and the output rotating shaft, and at the connection between the lower limit ring and the output rotating shaft;

[0013] A magnet is arranged at one end of the output rotating shaft away from the screen fixing bracket, and the magnet is arranged opposite to the magnetic encoder at an interval.

[0014] The beneficial effect of adopting the above further solution is that the tolerance generated by the connection is absorbed by the O-ring.

[0015] Furthermore, the damping assembly includes an upper friction block, a damping rotary plate, a lower friction block and a compression spring which are arranged in descending order, and the upper friction block and the lower friction block are both arranged on one side of the length direction of the damping rotary plate.

[0016] The beneficial effect of adopting the above further scheme is: an upper friction block and a lower friction block are arranged at one end of the damping rotating plate, and a compression spring is designed under the lower friction block to control the positive pressure of the upper and lower friction blocks on the damping rotating plate, while controlling the friction coefficient between the upper and lower friction blocks and the damping rotating plate.

[0017] Furthermore, the other side of the damping rotation sheet in the length direction is connected to the screen fixing bracket.

[0018] The beneficial effect of adopting the above further solution is that the damping rotating sheet is fixed on the screen fixing bracket and rotates synchronously therewith.

[0019] Furthermore, it also includes: a motor reduction box module, the motor reduction box module includes a multi-stage transmission gear that is meshed, the motor reduction box module is meshed with the fan gear through an output gear located at the output end, and the motor reduction box module is used to output torque to drive the fan gear to rotate.

[0020] The beneficial effects of adopting the above further scheme are: the motor reduction box module provides torque and a certain speed ratio, transmits the torque and speed from the input end to the output end, and outputs the torque to drive the fan gear to rotate, and finally realizes the transmission of the torque and speed to the output rotating shaft; the driving motor provides driving force to the driving worm, and the four-stage gear assembly is meshed in sequence to ensure the stability and efficiency of power transmission, and the power of the motor can be transmitted to the screen through a larger transmission ratio, driving the screen to rotate.

[0021] Furthermore, it also includes: a housing assembly, the output rotating shaft assembly and the damping assembly are arranged in the housing assembly.

[0022] The beneficial effect of adopting the above further solution is that the housing assembly protects the internal output rotating shaft assembly and the damping assembly, while improving the safety of the overall structure.

[0023] Further, the housing assembly comprises an upper end cover, a box support and a lower end cover which are connected in sequence;

[0024] The box support is provided with a first groove, the first groove extends out of the upper end surface of the upper end cover and is used to place the compression spring and the lower friction block;

[0025] The output rotating shaft sleeve is provided with the upper limit ring which abuts against the upper end cover, and the upper end surface of the output rotating shaft extends out of the upper end surface of the upper end cover;

[0026] The output rotating shaft sleeve is provided with the lower limiting ring which abuts against the box support.

[0027] The beneficial effect of adopting the above further scheme is: by connecting the upper end cover, the box support and the lower end cover in sequence to form a cavity structure, a stable operating environment is provided for the internal output rotating shaft assembly, the damping assembly and the motor reduction box module, reducing the interference of external factors. The D-shaped design provides sufficient space to install and fix the spring and the friction block; the output rotating shaft is positioned in the housing assembly through the upper limit ring and the lower limit ring. This design ensures the stability and reliability of the output rotating shaft and prevents the shaft from shaking or misaligning during operation.

[0028] Furthermore, the damping assembly is fixedly connected to the upper end surface of the upper end cover via a fixing block, a second groove is provided on a side of the fixing block close to the damping assembly, and the upper friction block is assembled in the second groove.

[0029] The beneficial effect of adopting the above further solution is that the design of the second groove allows the upper friction block to be easily assembled in the fixed block, which is convenient for installation and disassembly.

[0030] Furthermore, it also includes: a PCBA control board, the PCBA control board is communicatively connected to the magnetic encoder, and the PCBA control board is electrically connected to the driving motor in the motor reduction box module.

[0031] The beneficial effect of adopting the above further solution is: controlling the input current and voltage and other parameters of the input motor through the PCBA control board, controlling the motor operation, and receiving the rotation angle from the magnetic encoder feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A cross-sectional view of an embodiment of the utility model;

[0033] Figure 2 It is a three-dimensional diagram of an embodiment of the utility model.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1. Fixed block; 2. Upper friction block; 3. Damping rotary plate; 4. Lower friction block; 5. Compression spring; 6. Screen fixing bracket; 7. Motor reducer module; 8. Output rotating shaft; 9. First O-ring; 10. Upper limit ring; 11. Second O-ring; 12. Lower limit ring; 13. Upper end cover; 14. Box bracket; 15. PCBA board; 16. Lower end cover; 17. Magnetic encoding; 18. Output rotating shaft assembly; 19. Damping assembly. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] like Figure 1-2As shown, this embodiment proposes an eccentric spring friction plate damping mechanism for a vehicle-mounted screen, comprising: an output rotating shaft assembly 18 and a damping assembly 19, wherein a screen fixing bracket 6 is arranged at one end of the output rotating shaft assembly 18, and the vehicle-mounted display screen is connected via the screen fixing bracket 6. The output rotating shaft assembly 18 can drive the screen fixing bracket 6 to rotate, thereby driving the vehicle-mounted display screen to rotate; at the same time, the lower end surface of the screen fixing bracket 6 is connected to the output rotating shaft assembly 18, and one side of the lower end surface of the screen fixing bracket 6 is connected to the damping assembly 19, that is, the damping assembly 19 is located on one side of the output rotating shaft assembly 18, so that the damping assembly 19 can directly provide a holding torque to the screen, and the damping assembly 19 is eccentrically arranged relative to the output rotating shaft assembly 18, and the friction force can be adjusted by adjusting the length of the friction arm to determine the size of the damping torque.

[0038] In order to accurately feedback the rotation angle of the output rotating shaft assembly 18, a magnetic encoder 17 is set at the other end of the output rotating shaft assembly 18. The magnetic encoder 17 is spaced apart from the output rotating shaft assembly 18 and is correspondingly set directly below the output rotating shaft 8. The model of the magnetic encoder 17 is: MAQ600GQE-0000-AEC1-Z, which acts as an angle sensor to achieve accurate feedback of the rotation angle of the output rotating shaft assembly 18.

[0039] In this embodiment, the output torque is output by the output rotating shaft assembly 18 to drive the vehicle-mounted display screen to rotate. During the driving of the vehicle, when encountering sudden braking or going over a speed bump, the damping assembly 19 is used to overcome the torque generated by the acceleration on the screen, that is, the damping assembly 19 provides a holding torque to solve the problem of the screen deflecting or shaking during the sudden acceleration process. The magnetic encoder 17 arranged directly below the output rotating shaft assembly 18 is used to accurately feedback the rotation angle of the output rotating shaft assembly 18, thereby controlling the rotation angle of the screen, and at the same time ensuring the position angle of the damping assembly 19 to prevent its rotation angle from being too large and exceeding the rotation angle range.

[0040] like Figure 1-2 As shown, the output rotating shaft assembly 18 includes: an output rotating shaft 8, an upper limit ring 10 and a lower limit ring 12, wherein the output rotating shaft 8 is vertically arranged, and the upper limit ring 10 and the lower limit ring 12 are respectively sleeved on the output rotating shaft 8, and the upper limit ring 10 and the lower limit ring 12 are respectively sleeved on both sides of the output rotating shaft 8; specifically, the upper limit ring 10 and the lower limit ring 12 are respectively arranged at the shoulder positions on both sides of the output rotating shaft 8, and the positioning of the upper limit ring 10 and the lower limit ring 12 is achieved through the shoulder positions, and at the same time, the upper limit ring 10 is arranged above the lower limit ring 12.

[0041] In a preferred embodiment, a sector gear is also provided on the output rotating shaft 8, that is, Figure 2As shown, some gears are designed on the output rotating shaft 8. In the specific setting, the sector gear is close to the upper limit ring 10 and is set on the output rotating shaft 8 below the upper limit ring 10.

[0042] A screen fixing bracket 6 is arranged on the upper end surface of the output rotating shaft 8, wherein the screen fixing bracket 6 is fixed to the upper end surface of the output rotating shaft 8 by screws and polygonal positioning holes. The output rotating shaft 8 is spaced apart from the magnetic encoder 17 just below the lower end surface of the output rotating shaft 8 away from the screen fixing bracket 6. Correspondingly, a magnet corresponding to the magnetic encoder 17 is arranged just below the output rotating shaft 8.

[0043] During the specific working process, the power output end is connected through the fan gear located on the output rotating shaft 8, and the rotational torque is output to the output rotating shaft 8, thereby driving the output rotating shaft 8 to rotate; the upper limit ring 10 and the lower limit ring 12 are used to maintain the verticality of the output rotating shaft 8, and limit the up and down movement of the rotating output shaft; the rotation angle of the output shaft is accurately fed back through the magnetic encoder 17, thereby controlling the rotation angle of the screen.

[0044] like Figure 2 As shown, in a more specific solution, an O-ring is provided at the connection between the inner wall of the upper limit ring 10 and the output rotating shaft 8, and the inner wall of the lower limit ring 12 and the output rotating shaft 8, respectively. The O-ring sleeved at the inner wall of the lower limit ring 12 and the output rotating shaft 8 is defined as the first O-ring 9, and the O-ring sleeved at the inner wall of the upper limit ring 10 and the output rotating shaft 8 is defined as the second O-ring 11; it can be imagined that in order to achieve the connection with the O-ring, an inner concave portion for placing the O-ring is opened at the corresponding position of the output rotating shaft 8. A part of the tolerance is absorbed by the first O-ring 9 and the second O-ring 11, wherein the tolerance is generated by the key connection between the upper limit ring 10 and the output rotating shaft 8, and the lower limit ring 12 and the output rotating shaft 8.

[0045] like Figure 1As shown, the damping assembly 19 includes an upper friction block 2, a damping rotating plate 3, a lower friction block 4 and a compression spring 5 which are arranged in sequence from high to low. In the present embodiment, the damping assembly 19 is arranged parallel to the output rotating shaft 8, that is, it is arranged vertically as a whole; the upper friction block 2 and the lower friction block 4 are D-shaped as a whole, and the length dimension of the damping rotating plate 3 is longer than the length dimensions of the upper friction block 2 and the lower friction block 4, so that during the installation process, the upper friction block 2 and the lower friction block 4 are both arranged on one side of the length direction of the damping rotating plate 3, the upper friction block 2 is arranged on the upper end surface of the damping rotating plate 3, and the lower friction block 4 is arranged on the lower end surface of the damping rotating plate 3, and an installation space is reserved on the other side of the length direction of the damping rotating plate 3, and the other side of the length direction of the damping rotating plate 3 is fixedly connected to the screen fixing bracket 6. Specifically, the damping rotating plate 3 is fixed to the screen fixing bracket 6 by screws, and by fixing the damping rotating plate 3 to the screen fixing bracket 6, the damping rotating plate 3 rotates with the moving screen fixing bracket 6.

[0046] In this embodiment, the damping realization principle is as follows: Figure 1 As shown, the output rotating shaft 8 performs a rotational motion, driving the screen fixing bracket 6 to perform a rotational motion, and the damping rotating plate 3 fixed on the screen fixing bracket 6 performs a synchronous rotational motion therewith. The other end of the damping rotating plate 3 is respectively provided with an upper friction block 2 and a lower friction block, and a compression spring 5 is designed under the lower friction block to control the positive pressure of the upper and lower friction blocks on the damping rotating plate 3. At the same time, the friction coefficient between the upper and lower friction blocks 4 and the damping rotating plate 3 is controlled, so as to control the friction force between the upper and lower friction blocks and the damping rotating plate 3. At the same time, the distance between the action point of the friction force and the rotation center axis is designed in combination with the space, so as to control the damping force arm. By determining the sizes of these three, the size of the damping torque can be determined. The design form of the damping rotating plate 3 enables the friction force to be adjusted by adjusting the length of the friction force arm.

[0047] like Figure 2 As shown, in the preferred embodiment, it also includes: a motor reduction box module 7, the motor reduction box module 7 includes a multi-stage transmission gear that is meshed. Specifically, the motor reduction box module 7 includes: a driving motor, a driving worm, a primary gear assembly, a secondary gear assembly, a third gear assembly and a fourth gear assembly. The driving worm is connected to the motor output shaft of the driving motor, and the driving worm is meshed with the primary gear assembly. Thereafter, the primary gear assembly, the secondary gear assembly, the third gear assembly and the fourth gear assembly are meshed in sequence.

[0048] Specifically, the first-stage gear assembly includes: a first-stage gear shaft and a first-stage double gear, the first-stage double gear is sleeved on the first-stage gear shaft and is transmission-connected to the first-stage gear shaft, wherein the first-stage gear shaft is vertically arranged. In the present application, the first-stage double gear includes: a first-stage bevel gear and a first-stage spur gear, the first-stage bevel gear is arranged below the first-stage spur gear, and is meshed with the driving worm through the first-stage bevel gear located below.

[0049] The secondary gear assembly includes: a secondary gear shaft and a secondary double gear, the secondary double gear is sleeved on the secondary gear shaft and is in transmission connection with the secondary gear shaft. In the present application, the secondary gear shaft is arranged parallel to the primary gear shaft, the secondary double gear includes: a secondary large spur gear and a secondary small spur gear, and the secondary small spur gear is arranged below the secondary large spur gear; the secondary gear assembly is arranged by meshing the secondary large spur gear with the primary spur gear to realize meshing transmission.

[0050] The three-stage gear assembly includes: a three-stage gear shaft and a three-stage gear. The three-stage gear is assembled on the three-stage gear shaft and is transmission-connected to the three-stage gear shaft. The three-stage gear assembly is meshed with the two-stage pinion gear to achieve meshing transmission.

[0051] The four-stage gear assembly includes: a four-stage gear shaft and a four-stage double gear, the four-stage double gear is assembled on the four-stage gear shaft and is connected to the four-stage gear shaft in transmission. In the present application, the four-stage double gear includes: a four-stage spur gear and an output gear, and the four-stage spur gear is located below the output gear. The four-stage gear assembly is meshed with the three-stage gear through the four-stage spur gear. At the same time, the output gear at the output end is meshed with the fan gear to drive the output rotating shaft 8 to rotate.

[0052] In the above scheme, the motor reduction box module 7 provides torque and a certain speed ratio, transmits the torque and speed from the input end to the output end, and outputs the torque to drive the fan gear to rotate, and finally realizes the transmission of the torque and speed to the output rotating shaft 8; the driving motor provides driving force for the driving worm, and the four-stage gear assembly is meshed in sequence to ensure the stability and efficiency of power transmission, and the power of the motor can be transmitted to the screen through a larger transmission ratio, driving the screen to rotate.

[0053] like Figure 2As shown, in this preferred embodiment, it also includes: a housing assembly, the output rotating shaft assembly 18 and the damping assembly 19 are arranged in the housing assembly, and the housing assembly plays a role in protecting the internal output rotating shaft assembly 18 and the damping assembly 19, while improving the safety of the overall structure. Specifically, the housing assembly includes an upper end cover 13, a box support 14 and a lower end cover 16 connected in sequence, and the upper end cover 13, the box support 14 and the lower end cover 16 are connected in sequence to form a cavity structure, and the output rotating shaft assembly 18, the damping assembly 19 and the motor reduction box module 7 are assembled between the upper end cover 13 and the box support 14.

[0054] Correspondingly, a first groove is provided on the box bracket 14, and the first groove is a D-shaped surrounding groove, and the first groove extends out of the upper end surface of the upper end cover 13. During the specific installation process, the compression spring 5 is assembled in the first groove, and a lower friction block 4 is fixed to the upper end of the compression spring 5. By setting the first groove as a D-shaped surrounding groove, the lower friction block 4 can also be assembled in the first groove, thereby realizing positive pressure on the damping rotating plate 3.

[0055] Correspondingly, when the output rotating shaft 8 is installed, the position where the output rotating shaft 8 is sleeved with the upper limit ring 10 abuts against the opening of the upper end cover 13, and the upper end surface of the output rotating shaft 8 extends out of the upper end surface of the upper end cover 13, thereby realizing that the part of the output rotating shaft 8 extending out of the upper end cover 13 is connected to the screen fixing bracket 6. The position where the output rotating shaft 8 is sleeved with the lower limit ring 12 abuts against the opening of the box bracket 14, realizing the positioning of the output rotating shaft 8.

[0056] By connecting the upper end cover 13, the box support 14 and the lower end cover 16 in sequence to form a cavity structure, a stable operating environment is provided for the internal output rotating shaft assembly 18, the damping assembly 19 and the motor reduction box module 7, reducing the interference of external factors. The D-shaped design provides enough space to install and fix the spring and friction block; the output rotating shaft 8 is positioned in the housing assembly through the upper limit ring 10 and the lower limit ring 12. This design ensures the stability and reliability of the output rotating shaft 8 and prevents the shaft from shaking or misaligning during operation.

[0057] like Figure 1-2 As shown, the damping assembly 19 is fixedly connected to the upper end surface of the upper end cover 13 through the fixing block 1. Specifically, a second groove is designed in the fixing block 1, and the opening of the second groove is opened to the side close to the damping assembly 19, so that the upper friction block 2 can be assembled in the second groove, and the fixing block 1 is fixedly connected to the upper end surface of the upper end cover 13 through a fastener. The design of the second groove on the fixing block 1 allows the upper friction block 2 to be easily assembled in the fixing block 1, which is convenient for installation and disassembly.

[0058] like Figure 2As shown, in this preferred embodiment, it also includes: PCBA control board 15, PCBA is the abbreviation of Printed Circuit Board + Assembly in English, also called circuit board, PCBA control board 15 is connected to the drive motor in the motor reduction box module 7, used to input the input current and voltage and other parameters of the motor, and control the motor operation by giving the motor signal, and is also connected to the magnetic encoder 17 through the wire harness communication, so that the rotation angle fed back by the magnetic encoder 17 is transmitted and fed back to the PCBA control board 15. In this embodiment, the PCBA control board 15 is installed below the box bracket 14 through fasteners.

[0059] It should be stated that the control method of the PCBA control board is a prior art. Those skilled in the art can easily think of programming the PCBA control board according to actual needs to achieve corresponding effects, thereby realizing the automatic control work of the embodiment of the utility model, which will not be repeated here.

[0060] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An eccentric spring friction plate damping mechanism for a vehicle-mounted screen, characterized in that: include: An output rotating shaft assembly (18) and a damping assembly (19), wherein a screen fixing bracket (6) is provided at one end of the output rotating shaft assembly (18), and the screen fixing bracket (6) is used to connect a screen; The lower end surface of the screen fixing bracket (6) is connected to the output rotating shaft assembly (18), and one side of the lower end surface of the screen fixing bracket (6) is connected to the damping assembly (19); A magnetic encoder (17) is disposed at the other end of the output rotating shaft assembly (18), the magnetic encoder (17) being spaced apart from the output rotating shaft assembly (18) and being used to provide feedback on the rotation angle; The output rotating shaft assembly (18) comprises: an output rotating shaft (8), an upper limit ring (10) and a lower limit ring (12), wherein the upper limit ring (10) and the lower limit ring (12) are respectively sleeved on two sides of the output rotating shaft (8); The damping assembly (19) comprises an upper friction block (2), a damping rotary plate (3), a lower friction block (4) and a compression spring (5) which are arranged in descending order, and the upper friction block (2) and the lower friction block (4) are both arranged on one side of the damping rotary plate (3) in the length direction.

2. According to claim 1, the eccentric spring friction plate damping mechanism for a vehicle-mounted screen is characterized in that: The output rotating shaft (8) is also provided with a sector gear, and the sector gear is arranged between the upper limit ring (10) and the lower limit ring (12).

3. According to claim 2, the eccentric spring friction plate damping mechanism for a vehicle-mounted screen is characterized in that: An O-ring is sleeved on the output rotating shaft (8) at the connection between the upper limit ring (10) and the output rotating shaft (8), and at the connection between the lower limit ring (12) and the output rotating shaft (8); A magnet is arranged at one end of the output rotating shaft (8) which is away from the screen fixing bracket (6), and the magnet is arranged opposite to the magnetic encoder (17) with a gap therebetween.

4. According to claim 2, the eccentric spring friction plate damping mechanism for a vehicle-mounted screen is characterized in that: The other side of the damping rotation sheet (3) in the length direction is connected to the screen fixing bracket (6).

5. The eccentric spring friction plate damping mechanism for a vehicle-mounted screen according to claim 2 or 3, characterized in that: Also includes: A motor reduction box module (7), the motor reduction box module (7) comprising a meshing multi-stage transmission gear, the motor reduction box module (7) being meshingly arranged with the sector gear via an output gear located at an output end, the motor reduction box module (7) being used to output torque to drive the sector gear to rotate.

6. The eccentric spring friction plate damping mechanism for a vehicle-mounted screen according to claim 2, characterized in that: Also includes: A housing assembly, wherein the output rotating shaft assembly (18) and the damping assembly (19) are arranged in the housing assembly.

7. The eccentric spring friction plate damping mechanism for a vehicle-mounted screen according to claim 6, characterized in that: The housing assembly comprises an upper end cover (13), a box support (14) and a lower end cover (16) which are connected in sequence; The box support (14) is provided with a first groove, the first groove extending out of the upper end surface of the upper end cover (13) is provided for accommodating the compression spring (5) and the lower friction block (4); The output rotating shaft (8) is sleeved with the upper limit ring (10) and abuts against the upper end cover (13), and the upper end surface of the output rotating shaft (8) extends out of the upper end surface of the upper end cover (13); The output rotating shaft (8) is sleeved with the lower limiting ring (12) and abuts against the box support (14).

8. The eccentric spring friction plate damping mechanism for a vehicle-mounted screen according to claim 7, characterized in that: The damping assembly (19) is fixedly connected to the upper end surface of the upper end cover (13) via a fixing block (1); a second groove is provided on a side of the fixing block (1) close to the damping assembly (19); and the upper friction block (2) is assembled in the second groove.

9. The eccentric spring friction plate damping mechanism for a vehicle-mounted screen according to claim 5, characterized in that: Also includes: A PCBA control board (15), the PCBA control board (15) is communicatively connected to the magnetic encoder (17), and the PCBA control board (15) is electrically connected to the drive motor in the motor reduction box module (7).

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