Screen overturning transmission device, display device and vehicle

Abstract

The utility model relates to the technical field of vehicle-mounted screens, in particular to a screen overturning transmission device, a display device and a vehicle. The screen overturning transmission device provided by the utility model is connected with a driving mechanism and is used for driving a screen to overturn, and the screen overturning transmission device comprises a screen connecting bracket used for connecting the screen; the screen connecting bracket is sleeved on the main shaft; one end of the elastic component is used for being connected with a driving mechanism of the screen, and a first friction plate is arranged at the other end of the elastic component and abuts against the screen connecting support; the first friction plate can be driven by the driving mechanism and drive the screen connecting support to rotate, and the elastic component rotates synchronously with the first friction plate with the axis of the main shaft as the rotation axis. Under the action of external force, the screen connecting support can overcome the friction resistance of the first friction plate to the screen connecting support to rotate. By means of the screen overturning transmission device, the display screen has the electric overturning function and the manual overturning function at the same time, and the controllability of overturning the display screen is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted screens, and in particular to a screen flip transmission device, a display device and a vehicle. Background Art

[0002] With the rapid development of modern technology, people's requirements for their quality of life are gradually increasing. Therefore, the proportion of people installing on-board display screens in vehicles is also increasing year by year. The on-board display screen can not only allow passengers in the car to watch movies, but also allow the driver to perform route analysis and route selection, so as to provide better travel services for people today.

[0003] Car ceiling-mounted TVs are usually able to flip over, unfold the screen when needed, and store it when not in use, making efficient use of limited space in the car.

[0004] In the existing technology, the screen flip device of the car ceiling TV can generally be turned on and off by manual switch or electric switch, but there are few similar products that can support both electric and manual switch functions. Summary of the invention

[0005] In order to solve or at least partially solve the above technical problems, the present application provides a screen flip transmission device, a display device and a vehicle.

[0006] The first aspect of the present application discloses a screen flipping transmission device, which is connected to a driving mechanism and is used to drive the screen to flip, comprising:

[0007] Screen bracket, used to connect the screen;

[0008] The main shaft and the screen bracket are sleeved on the main shaft;

[0009] An elastic component, one end of which is used to connect to the driving mechanism of the screen, and the other end of which is provided with a first friction sheet, the first friction sheet abutting against the screen-connecting bracket;

[0010] The first friction plate can be driven by the driving mechanism to drive the screen-connecting bracket to rotate, and the elastic component takes the axis of the main shaft as the rotation axis and rotates synchronously with the first friction plate;

[0011] Under the action of external force, the screen-connecting bracket can overcome the friction resistance of the first friction plate to the screen-connecting bracket and rotate.

[0012] Optionally, in the screen flip transmission device as described above, the screen connecting bracket includes:

[0013] A bracket body and a second friction plate connected to the bracket body;

[0014] The first friction plate is in contact with the bracket body through the second friction plate, and the second friction plate can be driven by the first friction plate to rotate, so as to drive the screen-connected bracket to rotate synchronously.

[0015] Optionally, in the screen flip transmission device as described above, it further includes:

[0016] A third friction plate, the third friction plate can rotate with the axis of the main shaft as the rotation axis, and the third friction plate is configured to be transmission-connected with the first friction plate and rotate synchronously;

[0017] The third friction plate and the second friction plate are arranged in sequence along the axis direction of the main shaft;

[0018] Under the action of external force, the screen-connecting bracket can overcome the friction resistance of the first friction plate and the third friction plate to the second friction plate and rotate.

[0019] Optionally, in the screen flip transmission device as described above, the number of the second friction plates is at least two, and the number of the third friction plates is the same as the number of the second friction plates, or the number of the third friction plates is one less than the number of the second friction plates;

[0020] The second friction plate and the third friction plate are alternately arranged in sequence along the axis direction of the main shaft;

[0021] The second friction plate is configured to be pushed by the elastic component and move relative to the screen-connecting bracket along the axis direction of the main shaft;

[0022] The third friction plate is configured to be pushed by the elastic component and move relative to the screen-connecting bracket along the axial direction of the main shaft.

[0023] Optionally, in the screen flip transmission device as described above, the screen connecting bracket includes:

[0024] The bracket body and the mounting seat connected to the bracket body have a guide track arranged along the axis direction of the main shaft on the mounting seat, and the second friction plate is connected to the guide track so as to be able to move relative to the mounting seat along the axis direction of the main shaft.

[0025] Optionally, in the screen flipping transmission device as described above, the main shaft is in transmission connection with the driving mechanism, a first guide groove is provided on the main shaft, and the third friction plate is correspondingly provided with a first guide ridge, and the first guide groove cooperates with the first guide ridge so that the third friction plate can rotate with the main shaft and can move relative to the screen-connecting bracket along the axis direction of the main shaft when pushed; or,

[0026] The screen flipping transmission device also includes: a sleeve part, which is transmission-connected to the driving mechanism, the sleeve part is sleeved on the elastic component and is respectively connected to the first friction plate and the third friction plate, the sleeve part is provided with a second guide groove, the third friction plate is correspondingly provided with a second guide ridge, the second guide ridge cooperates with the second guide groove so that the third friction plate can rotate with the sleeve part, and when pushed, it can move relative to the screen bracket along the axial direction of the main shaft.

[0027] Optionally, the screen flip transmission device as mentioned above includes:

[0028] The return friction plate is connected to the driving mechanism so as to rotate synchronously with the first friction plate;

[0029] The damping friction plate is in contact with the anti-return friction plate and is fixedly arranged;

[0030] The friction between the return friction plate and the damping friction plate is eliminated to increase the rotational damping of the output shaft of the driving mechanism.

[0031] Optionally, in the screen flipping transmission device as described above, the main shaft is in transmission connection with the driving mechanism, and the return friction plate is fixedly connected to the main shaft and rotates coaxially with the main shaft; or,

[0032] The screen flip transmission device also includes:

[0033] The sleeve part is transmission-connected with the driving mechanism, and the return friction plate is fixedly connected to the sleeve part and rotates coaxially with the sleeve part.

[0034] Optionally, the screen flip transmission device as mentioned above further includes:

[0035] a fourth friction plate, connected to the driving mechanism and rotating synchronously with the first friction plate;

[0036] A fixed component abutting against the fourth friction plate;

[0037] The screen-connecting bracket is located between the fourth friction plate and the first friction plate and abuts against the two respectively. The fixing component is used to fix the position of the screen-connecting bracket in the axial direction of the main shaft through the fourth friction plate.

[0038] Optionally, in the screen flip transmission device as described above, the fixing component is a limit clamp, which limits its relative position on the main shaft through a limit groove provided externally; or,

[0039] The fixing part is a nut, which limits its relative position on the main shaft through the threads provided on the main shaft;

[0040] A gasket is also arranged between the fixing component and the fourth friction plate.

[0041] The second aspect of the present application discloses a display device, comprising: a driving mechanism, a display screen, and a screen flipping transmission device as described in the first aspect;

[0042] The display screen is connected to the driving mechanism through a screen flip transmission device.

[0043] Optionally, in the display device as described above, the driving mechanism includes:

[0044] A motor and a gearbox connected to the motor, the gearbox having an output shaft, the output shaft being transmission-connected to the first friction plate, and the gearbox being configured to enable the motor to be in a single-way locking state.

[0045] Optionally, in the display device as described above, one side of the display screen is connected to a driving mechanism through a screen flip transmission device, and the other side is connected to another driving mechanism through a screen flip transmission device. The screen flip transmission device is provided with a back-eliminating mechanism, which is used to increase the damping of the rotation of the output shaft of the driving mechanism connected thereto.

[0046] A third aspect of the present application discloses a vehicle, on which the display device according to the second aspect is installed.

[0047] Compared with the prior art, the present application utilizes the compression amount of the compression elastic component to control the pressure between the friction plates, which is not only conducive to the design and calculation of various parameters during theoretical design, but also can effectively and intuitively control the consistency of performance during product production by controlling the compression amount of the elastic component during actual production and manufacturing. During the use of the product, when the friction plate is slightly worn, the compression amount of the elastic component changes slightly. Due to the characteristics of the spring, the pressure amount will not change suddenly, which can ensure the reliability of the clutch mechanism system. The present application forms a device that can realize the clutch function by alternately arranging the first to fourth friction plates in sequence with the screen bracket. The structure is simple and disassembly, maintenance and replacement of parts are convenient. By arranging damping friction plates and anti-return friction plates to suppress the shaking caused by the internal gear gap of the gearbox, the stability of the screen is improved and the viewing experience is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the implementation of the present application, the following is a brief introduction to the relevant drawings. It is understood that the drawings described below are only used to illustrate some implementations of the present application, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned in this document based on these drawings.

[0049] Figure 1 It is a schematic diagram of the assembly of a screen flip transmission device and a driving mechanism in an implementation mode of the present application;

[0050] Figure 2is a three-dimensional schematic diagram of a screen flip transmission device according to an embodiment of the present application;

[0051] Figure 3 is a three-dimensional schematic diagram of a driving mechanism of an embodiment of the present application;

[0052] Figure 4 is another schematic diagram of a screen flip transmission device according to an embodiment of the present application;

[0053] Figure 5 is an exploded schematic diagram of a screen flip transmission device according to an embodiment of the present application;

[0054] Figure 6 is an exploded schematic diagram of another screen flip transmission device according to an embodiment of the present application;

[0055] Figure 7 is an exploded schematic diagram of a screen flip transmission device with a socket according to an embodiment of the present application;

[0056] Figure 8 is an exploded schematic diagram of another angle of a screen flip transmission device with a socket member according to an embodiment of the present application;

[0057] Fig. 9 It is a schematic diagram of a screen flip transmission device and a screen flip transmission device according to an embodiment of the present application.

[0058] Description of reference numerals:

[0059] A. Screen flip transmission device; B. Driving mechanism; C. Screen flip transmission device;

[0060] 1. Screen-connecting bracket; 101. Bracket body; 102. Second friction plate; 103. Mounting seat; 104. Guide rail;

[0061] 2. spindle; 201. first guide groove; 202. second guide groove;

[0062] 3. Elastic components;

[0063] 4. First friction plate;

[0064] 5. third friction plate; 501. first guide ridge; 502. second guide ridge;

[0065] 6. Eliminate friction plate;

[0066] 7. Damping friction plate;

[0067] 8. Socket fittings;

[0068] 9. Fixed components; 901. Limiting card;

[0069] 10. Fourth friction plate;

[0070] 11. Gasket;

[0071] 12. Motor;

[0072] 13. Gearbox. DETAILED DESCRIPTION

[0073] The present application is described in detail below in conjunction with the accompanying drawings.

[0074] In previous designs, when the car screen is designed with a flip function, it often only supports one flipping method: electric or manual. Manual flipping is not very convenient, and electric flipping is prone to damage when it is directly turned by hand. In the technical field of car screens, the existing technology lacks a reasonable design that can take into account both manual and automatic flipping functions.

[0075] The inventor of the present application analyzed the cause of this problem and believed that the prior art lacks a clutch structure suitable for this field.

[0076] In view of the above problems, the present invention designs a screen flip transmission device. Please refer to the following embodiments:

[0077] Implementation Method 1

[0078] The first embodiment of the present application discloses a screen flipping transmission device A, such as Figure 1 , Figure 2 and Figure 3 As shown, the screen flipping transmission device A is connected to the driving mechanism B and is used to drive the screen to flip, and includes:

[0079] Screen connecting bracket 1, used for connecting the screen;

[0080] The main shaft 2, the screen bracket 1 is sleeved on the main shaft 2;

[0081] An elastic component 3, one end of which is used to connect to the driving mechanism B of the screen, and the other end of which is provided with a first friction sheet 4, which abuts against the screen-connecting bracket 1;

[0082] The first friction plate 4 can be driven by the driving mechanism B to drive the screen-connecting bracket 1 to rotate, and the elastic component 3 takes the axis of the main shaft 2 as the rotation axis and rotates synchronously with the first friction plate 4;

[0083] Under the action of external force, the screen-connecting bracket 1 can overcome the friction resistance of the first friction plate 4 to the screen-connecting bracket 1 and rotate.

[0084] Based on the above technical solution, in an embodiment of the present application, a display device is also proposed, including:

[0085] Driving mechanism B, display screen (not shown) and the aforementioned screen flipping transmission device A;

[0086] The display screen is connected to the driving mechanism B through a screen flip transmission device A.

[0087] Based on the above technical solution, in the implementation mode of the present application, a vehicle is also proposed, on which the display device of the above technical solution is installed.

[0088] Combination Figure 2 As shown, the screen flip transmission device A includes a screen-connecting bracket 1, a main shaft 2 and an elastic component 3. The screen-connecting bracket 1 is connected to the display screen and sleeved on the main shaft 2, and the screen-connecting bracket 1 can drive the screen to pivot around the main shaft 2. One end of the elastic component 3 is connected to the driving mechanism B of the screen, and the other end is provided with a first friction plate 4, and the first friction plate 4 abuts against the screen-connecting bracket 1.

[0089] In simple terms, the elastic component 3 has an elastic modulus and is clamped between the first friction plate 4 and the drive mechanism B in a compressed state. The elastic component 3 applies an elastic force corresponding to the compression amount of the elastic component 3 to the first friction plate 4, so that friction resistance is generated between the first friction plate 4 and the screen bracket 1, and the torsion generated by the weight of the display screen on the screen bracket 1 cannot overcome the friction resistance generated between the first friction plate 4 and the screen bracket 1, that is, the torsion output by the display screen to the screen bracket 1 due to gravity is less than the friction resistance of the first friction plate to the screen bracket. Therefore, under the action of the static friction force, the drive mechanism B drives the first friction plate 4, and the first friction plate 4 can drive the screen bracket 1 to rotate synchronously with the first friction plate 4. At the same time, the elastic component 3 can rotate synchronously with the first friction plate 4 with the axis of the main shaft 2 as the rotation axis. Specifically, when the elastic component 3 rotates together with the main shaft 2, one end of the elastic component 3 can be fixedly connected to the drive mechanism B. At this time, the drive mechanism B drives the elastic component 3 and the main shaft 2 to rotate together at the same time, and the elastic component 3 fixedly connected to the drive mechanism B has structural stability. When the main shaft 2 and the elastic component 3 rotate asynchronously, one end of the elastic component 3 can abut against the driving mechanism B. At this time, the elastic component 3 mainly provides elastic force along the axis direction of the main shaft 2, and can rotate relative to the main shaft 2, and the disassembly and assembly of the elastic component 3 is relatively convenient. When the driving mechanism B starts to operate, the elastic component 3 abutting therewith is driven to rotate, and the first friction plate 4 abutting against the elastic component 3 and the screen-connecting bracket 1 abutting against the first friction plate 4 can rotate synchronously with the elastic component 3 to realize the electrically driven flipping of the display screen.

[0090] By installing an elastic component 3 between the first friction plate 4 and the driving mechanism B, the friction resistance between the first friction plate 4 and the driving mechanism B, and between the first friction plate 4 and the screen-connecting bracket 1 can be controlled by utilizing the compression of the elastic component 3. This not only facilitates the design and calculation of various parameters during theoretical design, but also can intuitively and effectively control the consistency of performance during product production by controlling the compression of the elastic component 3 during actual production and manufacturing. In addition, if the first friction plate 4 is slightly worn during the use of the screen flip transmission device A, the compression of the elastic component 3 will only change slightly accordingly, and its elastic force will not change suddenly, which can ensure the reliability of the screen flip transmission device A.

[0091] In some embodiments, the elastic component 3 can be a spring sleeved on the main shaft 2, and the two ends of the spring are respectively in contact with the drive mechanism B and the first friction plate 4, and the elastic force can be controlled by the expansion and contraction of the spring, so that the friction resistance between the first friction plate 4 and the drive mechanism B and between the first friction plate 4 and the screen-connecting bracket 1 can be adjusted conveniently, and the installation of the spring is also relatively convenient. Optionally, when the elastic component 3 is used as a spring, one end can also be fixedly connected to the drive mechanism B, and the other end can be in contact with the first friction plate 4. When the spring is pressed between the first friction plate 4 and the drive mechanism B, the spring mainly controls the friction resistance between the first friction plate 4 and the screen-connecting bracket 1 through its compression.

[0092] In some other embodiments, the elastic component 3 may be a plurality of springs distributed around the main shaft 2 at a certain angle. For example, the elastic component 3 may include 6 springs, which are arranged at an angle interval of 60° around the same circumference coaxial with the main shaft 2. One end of the 6 springs abuts against the first friction plate 4, and the other end abuts against the driving mechanism B. At the same time, a telescopic sleeve may be provided in the middle of each spring to prevent the spring from radially deviating. The 6 springs can withstand a large load, that is, the 6 springs can be arranged to apply a large pressure to the first friction plate 4.

[0093] When the screen bracket 1 rotates under the action of external force, it can overcome the friction resistance of the first friction plate 4 to the screen bracket 1 and rotate. In some embodiments, the driving mechanism B with a self-locking mechanism is self-locking when it is not in a driving state, that is, the driving mechanism B is self-locking in one direction, and will not be driven when the driving mechanism B is subjected to force from the non-driving end. At this time, if you want to open the display screen, you can choose to apply external force to the display screen, such as manually applying torque to the display screen. When the external force is greater than the friction resistance between the screen bracket 1 and the first friction plate 4, the screen bracket 1 can overcome the friction resistance between the screen bracket 1 and the first friction plate 4 and rotate, thereby realizing the function of manually flipping the display screen.

[0094] Also, see Figure 2 As shown, the screen flip transmission device A also includes:

[0095] The fourth friction plate 10 is connected to the driving mechanism B and rotates synchronously with the first friction plate 4;

[0096] A fixing member 9 abuts against a fourth friction plate 10;

[0097] The screen-connecting bracket 1 is located between the fourth friction plate 10 and the first friction plate 4 and abuts against the two respectively. The fixing component 9 is used to fix the axial position of the screen-connecting bracket 1 on the main shaft 2 through the fourth friction plate 10 .

[0098] The fourth friction plate 10 can be connected to the driving mechanism B in a transmission manner. For example, the fourth friction plate 10 can be sleeved on the main shaft 2, and the main shaft 2 is connected to the driving mechanism B to achieve a transmission connection between the fourth friction plate 10 and the driving mechanism B, and the main shaft 2 can drive the fourth friction plate 10 and the driving mechanism B to rotate synchronously. The fourth friction plate 10 can also be sleeved in the sleeve 8, such as Figure 7 As shown, the sleeve 8 is connected to the drive mechanism B to realize the connection between the fourth friction plate 10 and the drive mechanism B. The sleeve 8 can limit the circumferential rotation of the fourth friction plate 10, so that the fourth friction plate 10 rotates synchronously with the drive mechanism B on the sleeve 8. The specific structure and working method of the sleeve 8 will be further explained in embodiments 5 to 7. In this embodiment, the connection is an indirect connection, and the fourth friction plate 10 is connected to the drive mechanism B through the main shaft 2. In some embodiments, such as Figure 7 As shown, the fourth friction plate 10 can be connected to the driving mechanism B through the socket 8; in other embodiments, the driving mechanism B can include a main shaft 2, in which case the fourth friction plate 10 is directly connected to the driving mechanism B.

[0099] Combination Figure 2 It can be seen that the fourth friction plate 10, the screen bracket 1 and the first friction plate 4 are all sleeved on the main shaft 2, and the three can pivot together around the axis of the main shaft 2. The fourth friction plate 10 and the first friction plate 4 clamp the screen bracket 1 on the main shaft 2. In an optional embodiment, the friction coefficients of the first friction plate 4 and the fourth friction plate 10 can be the same. In this way, the friction forces distributed on the left and right sides of the screen bracket 1 are the same, which can make the two sides of the screen bracket 1 wear synchronously, prevent the situation where the entire screen bracket 1 component is replaced due to excessive wear on one side, and reduce maintenance costs.

[0100] The fixing component 9 is in contact with the fourth friction plate 10, and is used to fasten the fourth friction plate 10 and apply a pressing force to the fourth friction plate 10, so that friction is generated between the fourth friction plate 10 and the connecting screen bracket 1. The connecting screen bracket 1 has a fourth friction plate 10 on one side and a first friction plate 4 on the other side. When an external force is applied to the connecting screen bracket 1, the connecting screen bracket 1 needs to overcome the friction resistance applied to the connecting screen bracket 1 by the fourth friction plate 10 and the first friction plate 4 to rotate. When the driving mechanism B electrically drives the connecting screen bracket 1 to rotate, the torque generated by the deadweight and the vibration of the vehicle on the side of the connecting screen bracket 1 needs to be greater than the sum of the friction resistances of the fourth friction plate 10 and the first friction plate 4, that is, the connecting screen bracket 1 can be driven by the driving mechanism B to flip under the static friction of the fourth friction plate 10 and the first friction plate 4. With the screen-connecting bracket 1 arranged as above, the friction resistance is jointly caused by the fourth friction plate 10 and the first friction plate 4. The friction area of ​​the screen-connecting bracket is larger, and the friction force increases accordingly. This can reduce the requirements for the spring performance and make the clutch structure more stable.

[0101] For display devices, see Figure 2 and Figure 3 As shown, its driving mechanism B includes:

[0102] The motor 12 and the gearbox 13 connected to the motor 12 , the gearbox 13 has an output shaft (not shown), the output shaft is drivingly connected to the first friction plate 4 , and the gearbox 13 is configured to enable the motor 12 to be in a one-way locking state.

[0103] The driving end of the motor 12 is connected to the input end of the gearbox 13, and the output shaft of the gearbox 13 is connected to the first friction plate 4. The rotation of the driving end of the motor 12 can drive the output shaft of the gearbox 13, and the output shaft of the gearbox 13 is subjected to external force, so that the driving end of the motor 12 cannot rotate, thereby realizing the one-way locking state of the motor 12. The motor 12 can change its output speed and torque by adding a gearbox 13. For example, a small motor 12 suitable for use in a screen flip transmission device has a high speed, a small torque, and a low cost. After adding a gearbox, the speed can be reduced and the torque can be increased, and the precise control of the flip angle of the display screen can be realized.

[0104] Further, see Fig. 9 As shown, one side of the display screen is connected to a driving mechanism B through a screen flip transmission device A, and the other side is connected to another driving mechanism B through a screen flip transmission device C. The screen flip transmission device C is provided with a back-eliminating mechanism, which is used to increase the damping of the output shaft rotation of the driving mechanism B connected thereto.

[0105] The screen flip transmission device A and the screen flip transmission device C are arranged on the left and the right to jointly support the gravity of the display screen, and can disperse the driving force for flipping the display screen, reduce the volume of a single device, and save space in the vehicle.

[0106] Implementation Method 2

[0107] This embodiment is a further improvement based on the first embodiment, and its improvement lies in providing an improved structure of a screen flipping transmission device A, specifically:

[0108] See also Figure 4 As shown, the screen-connecting bracket 1 also includes:

[0109] A bracket body 101 and a second friction plate 102 connected to the bracket body 101;

[0110] The first friction plate 4 is in contact with the bracket body 101 through the second friction plate 102 , and the second friction plate 102 can be driven by the first friction plate 4 to rotate, so as to drive the screen-connected bracket 1 to rotate synchronously.

[0111] The second friction plate 102 is connected to the bracket body 101 and abuts against the first friction plate 4. The second friction plate 102 has the same rotation axis as the first friction plate 4 and the bracket body 101. The first friction plate 4 can drive the second friction plate 102 to rotate by abutting against the second friction plate 102, and then drive the screen bracket 1 to rotate together through the second friction plate 102.

[0112] The second friction plate 102 can replace the bracket body 101 to contact the first friction plate 4, eliminating the friction loss of the first friction plate 4 on the bracket body 101. If the second friction plate 102 is worn, the second friction plate 102 can be directly replaced instead of the entire screen bracket 1, thereby enhancing the durability of the screen flip transmission device A and extending its service life.

[0113] Specifically, the second friction plate 102 can be sleeved on the main shaft 2. The bracket body 101 can limit the rotation of the second friction plate 102 relative to the bracket body 101. Conversely, the second friction plate 102 can also drive the bracket body 101 to rotate around the rotation axis. In addition, the second friction plate 102 can be replaced after being worn, and the maintenance of parts is very convenient. In some other embodiments, the bracket body 101 can be integrally formed with the second friction plate 102 to simplify the process design and installation process.

[0114] Further, see Figure 4 As shown, the screen flip transmission device A may also include:

[0115] A third friction plate 5, the third friction plate 5 can rotate with the axis of the main shaft 2 as the rotation axis, and the third friction plate 5 is configured to be transmission-connected with the first friction plate 4 and rotate synchronously;

[0116] The third friction plate 5 and the second friction plate 102 are sequentially arranged along the axis direction of the main shaft 2;

[0117] Under the action of external force, the screen-connecting bracket 1 can overcome the friction resistance of the first friction plate 4 and the third friction plate 5 to the second friction plate 102 and rotate.

[0118] The third friction plate 5 and the first friction plate 4 can be connected and rotate synchronously through the main shaft 2, and the third friction plate 5 and the second friction plate 102 are arranged in sequence along the axis direction of the main shaft 2. In an optional embodiment, the first friction plate 4 and the third friction plate 5 can be fixedly connected to the main shaft 2 to achieve synchronous rotation of the first friction plate 4 and the third friction plate 5.

[0119] In addition, the support body 101 of the screen support 1 is connected to the second friction plate 102, and the second friction plate 102 is in contact with the first friction plate 4 and the third friction plate 5. Under the action of external force, the screen support 1 can overcome the friction resistance of the first friction plate 4 and the third friction plate 5 to the second friction plate 102 and rotate. In other words, when an external force is applied to the screen support 1 and the rotational torque generated by the screen support 1 is greater than the static friction torque applied by the first friction plate 4 and the third friction plate 5 to the second friction plate 102, the screen support 1 can overcome the friction resistance of the first friction plate 4 and the third friction plate 5 to the second friction plate 102 and rotate.

[0120] Further, see Figure 4 As shown, there are at least two second friction plates 102, and the number of the third friction plates 5 is the same as the number of the second friction plates 102, or the number of the third friction plates 5 is one less than the number of the second friction plates 102;

[0121] The second friction plate 102 and the third friction plate 5 are arranged alternately in sequence along the axis direction of the main shaft 2;

[0122] The second friction plate 102 is configured to be pushed by the elastic component 3 and move relative to the screen-connecting bracket 1 along the axis direction of the main shaft 2;

[0123] The third friction plate 5 is configured to be pushed by the elastic component 3 and move relative to the screen-connecting bracket 1 along the axial direction of the main shaft 2 .

[0124] The first friction plate 4, the second friction plate 102, and the third friction plate 5 form a clutch assembly on one side of the bracket body 101 and the abutting part of the third friction plate 5 and the fourth friction plate 10, that is, when the motor 12 drives the main shaft 2 to rotate, the first friction plate 4 and the third friction plate 5 can be driven by the main shaft 2 and drive the second friction plate 102 to rotate through static friction; when external force is applied to the screen connecting mechanism, the second friction plate 102 can overcome the friction force of the first friction plate 4 and the third friction plate 5 and rotate.

[0125] Correspondingly, a second friction plate 102 and a third friction plate 5 can be added to the other side of the abutment part of the bracket body 101 and the third friction plate 5 and the fourth friction plate 10. The fourth friction plate 10, the second friction plate 102 and the third friction plate 5 are arranged in sequence along the axial direction of the main shaft 2, and form a second clutch assembly with the fourth friction plate 10. Similar to the first friction plate 4 and the third friction plate 5, the fourth friction plate 10 can also be arranged to rotate synchronously with the main shaft 2 along the rotation axis of the main shaft 2. Under a constant pressure, the friction force increases with the increase of the friction contact surface. The second friction plate 102 connected to the bracket body 1 contacts the first friction plate 4 and the third friction plate 5 on both sides respectively, increasing the friction contact surface of the first friction plate 4 and the third friction plate 5 with the connecting screen bracket 1, and the friction force on the connecting screen bracket 1 is also increased accordingly, so the performance requirements for the spring can also be relatively low.

[0126] The second friction plate 102 and the third friction plate 5 can be pushed by the elastic component 3 and move relative to the screen-connecting bracket 1 along the axial direction of the main shaft 2. The second friction plate 102 and the third friction plate 5 are sleeved on the main shaft 2 and can freely translate along the axial direction of the main shaft 2. When the second friction plate 102 or the third friction plate 5 has friction loss and produces a slight deformation, the elastic component 3 can adaptively push the second friction plate 102 or the third friction plate 5 to move relative to the screen-connecting bracket 1 to compensate for the slight deformation, and provide a stable elastic resistance force to ensure the stability of the structure of the screen flip transmission device A.

[0127] Implementation Method 3

[0128] This embodiment is a further improvement on the first and second embodiments, and its improvement lies in providing an improved structure of a screen flipping transmission device A, specifically:

[0129] See also Figure 5 As shown, the screen-connecting bracket 1 includes:

[0130] The bracket body 101 and the mounting seat 103 connected to the bracket body 101 , the mounting seat 103 has a guide track 104 arranged along the axial direction of the main shaft 2 , and the second friction plate 102 is connected to the guide track 104 so as to be able to move along the axial direction of the main shaft 2 relative to the mounting seat 103 .

[0131] The mounting seat 103 can be arranged parallel to the main shaft 2, and the mounting seat 103 has a guide track 104 arranged along the axis direction of the main shaft 2. For the second friction plate 102, the connection with the guide track 104 of the mounting seat 103 limits its circumferential movement relative to the bracket body 101, and the second friction plate 102 can move along the axis direction of the main shaft 2 in the guide track 104. Of course, the second friction plate 102 can also be fixedly connected to the guide track 104, and move synchronously with the bracket body 101 along the axis direction of the main shaft 2. The connection between the second friction plate 102 and the bracket body 101 can be bolted, or the connecting pin can be integrally formed on the second friction plate 102.

[0132] Implementation Method 4

[0133] This embodiment is a further improvement based on the first to third embodiments, and the improvement lies in that an improved structure of a screen flipping transmission device A is provided, specifically:

[0134] See also Figure 5 and Figure 6 As shown, the main shaft 2 is transmission-connected with the driving mechanism B, a first guide groove 201 is provided on the main shaft 2, and a first guide ridge 501 is correspondingly provided on the third friction plate 5. The first guide groove 201 cooperates with the first guide ridge 501 so that the third friction plate 5 can rotate with the main shaft 2 and can move relative to the screen bracket 1 along the axial direction of the main shaft 2 when pushed.

[0135] Combination Figure 7 As shown, the cylindrical main shaft 2 can be cut to form a first guide groove 201 along the axial direction, and the second friction plate 102 with a circular hole can be sleeved on the main shaft 2 and rotate around the main shaft 2 in the circumferential direction. A certain gap is left between the circular hole of the second friction plate 102 and the first guide groove 201 of the main shaft 2 due to the first guide groove 201. The third friction plate 5 is provided with a first guide ridge 501, and the first guide ridge 501 can cooperate with the first guide groove 201, so that the hole of the third friction plate 5 can cooperate with the shape of the cross section of the main shaft 2 without leaving a gap, so as to limit the rotation of the third friction plate 5 relative to the main shaft 2 in the circumferential direction. In this way, when the main shaft 2 rotates, the third friction plate 5 will be driven by the main shaft 2 to rotate synchronously, while the second friction plate 102 can rotate relative to the main shaft 2. The first friction plate 4 and the fourth friction plate 10 can be provided with a ridge structure in the same manner as the third friction plate, so that they can cooperate with the main shaft 2 without rotating relative to the main shaft 2. The specific rotation process is:

[0136] When the screen bracket 1 is manually flipped, the main shaft 2 stops rotating, and the first friction plate 4, the third friction plate 5 and the fourth friction plate 10 cooperating with the main shaft 2 also stop rotating. The bracket body 101 is driven by external force to drive the second friction plate 102 to rotate relative to the stationary main shaft.

[0137] When the screen bracket 1 is driven by the driving mechanism B, the main shaft 2 drives the first friction plate 4, the third friction plate 5 and the fourth friction plate 10 cooperating with the main shaft 2 to rotate around its rotation axis, and the bracket body 1 and the second connecting plate 102 are driven to rotate synchronously under the static friction force of the first friction plate 4, the third friction plate 5 and the fourth friction plate 10 abutting against them.

[0138] Implementation Method 5

[0139] This embodiment is a further improvement based on the first to fourth embodiments, and the improvement lies in that an improved structure of a screen flipping transmission device A is provided, specifically:

[0140] See also Figure 7 and Figure 8 As shown, the screen flipping transmission device A also includes: a socket 8, which is transmission-connected to the driving mechanism B, the socket 8 is sleeved on the elastic component 3 and is respectively connected to the first friction plate 4 and the third friction plate 5, a second guide groove 202 is provided on the socket 8, and the third friction plate 5 is correspondingly provided with a second guide ridge 502, the second guide ridge 502 cooperates with the second guide groove 202, so that the third friction plate 5 can rotate with the socket 8, and when pushed, it can move relative to the screen bracket 1 along the axial direction of the main shaft 2.

[0141] In an alternative embodiment, the main shaft 2 may be replaced by a sleeve 8. Figure 5 and Figure 6 As shown, the first friction plate 4 and the third friction plate 5 can be connected inside the sleeve 8 and rotate with the sleeve 8 around the rotation axis of the sleeve 8. Specifically, a second guide groove 202 is provided inside the sleeve 8, and a second guide ridge 502 is provided on the third friction plate 5. The second guide ridge 502 can cooperate with the second guide groove 202 to limit the relative rotation between the third friction plate 5 and the sleeve 8, so that the third friction plate 5 rotates with the sleeve 8, but the third friction plate 5 can still move along the axis direction of the sleeve 8. The sleeve 8 can well protect the internal parts from being squeezed and collided, and can also provide stable structural support for the internal parts.

[0142] Through the above arrangement, the first friction plate 4 and the third friction plate 5 are restricted by the sleeve 8 and cannot rotate around the rotation axis, while the second friction plate 102 can rotate freely along the axis of the main shaft 2 while overcoming the friction between the first friction plate 4 and the third friction plate 5.

[0143] Implementation Method 6

[0144] This embodiment is a further improvement based on the first to fifth embodiments, and the improvement lies in that an improved structure of a screen flipping transmission device A is provided, specifically:

[0145] See also Figure 3 , Figure 4 and Figure 5 As shown, the screen flip transmission device A also includes:

[0146] The return friction plate 6 is connected to the driving mechanism B so as to rotate synchronously with the first friction plate 4;

[0147] The damping friction plate 7 is in contact with the anti-return friction plate 6 and is fixedly arranged;

[0148] The friction plate 6 and the damping friction plate 7 rub against each other to increase the rotation damping of the output shaft of the driving mechanism B.

[0149] The screen flip transmission device A may include a friction plate 6 and a damping friction plate 7. The friction plate 6 is connected to the main shaft 2 and rotates synchronously with the main shaft 2. The damping friction plate 7 is fixed on the inner wall of the output end of the gearbox 13 and abuts against the friction plate 6. The friction plate 6 and the damping friction plate 7 rub to increase the static friction between the main shaft 2 and the gearbox 13. Since a plurality of gear sets are arranged in the gearbox 13, a gear gap is formed between the gears meshing with each other. Therefore, when the vehicle vibrates, the main shaft 2 will shake within the gap range due to the existence of the gear gap, thereby causing the display screen to shake. Since the static friction between the main shaft 2 and the gearbox 13 is increased, the force generated by the vibration of the vehicle cannot overcome the static friction between the main shaft 2 and the gearbox 13, and the main shaft 2 will not rotate, thereby being able to offset the slight shaking of the display screen due to the gear gap. Therefore, after the user adjusts the display screen to a suitable angle as needed, or when the display screen remains in the current position, even if the vehicle vibrates, the display screen will not shake due to the gear gap in the gearbox 13, which is conducive to ensuring the stability of the display device.

[0150] Further, see Figure 3 , Figure 4 and Figure 5 As shown, the main shaft 2 is in transmission connection with the driving mechanism B, and the friction plate 6 is fixedly connected to the main shaft 2 and rotates coaxially with the main shaft 2; or,

[0151] The screen flip transmission device A also includes:

[0152] The sleeve member 8 is transmission-connected to the driving mechanism B, and the return friction plate 6 is fixedly connected to the sleeve member 8 and rotates coaxially with the sleeve member 8.

[0153] The friction plate 6 is fixedly connected to the main shaft 2, so that there is friction between the main shaft 2 and the gearbox 13. When the outside world shakes, the gear clearance inside the gearbox 13 may cause the main shaft to shake. By arranging the friction plate 6 on the main shaft 2, the shaking of the display screen caused by the gear clearance inside the gearbox 13 can be suppressed, thereby improving the stability of the display screen. In an optional embodiment, when the screen flip transmission device uses the socket 8 instead of the main shaft 2 to realize the function, the friction plate 6 can be fixedly connected to the socket 8 and rotate synchronously with the socket, which can also suppress the shaking of the display screen caused by the gear clearance inside the gearbox 13 and improve the structural stability of the display screen.

[0154] Implementation Method 7

[0155] This embodiment is a further improvement based on the first to sixth embodiments, and the improvement lies in that an improved structure of the fixing component 9 is provided, specifically:

[0156] See also Figure 6 , Figure 7 and Figure 8 As shown, the fixing component 9 is a limit clamp 901, which limits its relative position on the main shaft 2 through a limit groove arranged outside; or,

[0157] The fixing component 9 is a nut, which is fixed to the main shaft 2 by means of a thread provided on the main shaft 2.

[0158] A gasket 11 is further provided between the fixing component 9 and the fourth friction plate 10 .

[0159] The fixing member 9 can be installed in a limiting groove provided on the main shaft 2 as a limiting clamp 901, or can be installed on a thread provided on the main shaft 2 as a nut. Figure 6 As shown, when the screen flip transmission device A uses the sleeve 8, the fixing component 9 can also be installed on the sleeve 8 as a baffle to limit the axial movement of the screen-connecting bracket 1. In general, the fixing component 9 can limit the axial movement of the screen-connecting bracket 1, withstand the elastic force from the elastic component 3, and prevent it from being separated from the main shaft 2 or the sleeve 8.

[0160] Finally, it should be noted that those skilled in the art can understand that in order to enable readers to better understand the present application, the embodiments of the present application provide many technical details. However, even without these technical details and various changes and modifications based on the above-mentioned embodiments, the technical solutions claimed for protection by the claims of the present application can be basically realized. Therefore, in practical applications, various changes can be made to the above-mentioned embodiments in form and detail without departing from the spirit and scope of the present application.

Claims

1. A screen flipping transmission device, connected to a driving mechanism and used to drive the screen to flip, characterized in that: include: A screen-connecting bracket, used for connecting the screen; A main shaft, on which the screen-connecting bracket is sleeved; An elastic component, one end of which is used to connect to the driving mechanism of the screen, and the other end of which is provided with a first friction sheet, the first friction sheet abuts against the screen-connecting bracket; The first friction plate can be driven by the driving mechanism to drive the screen-connecting bracket to rotate, and the elastic component uses the axis of the main shaft as the rotation axis and rotates synchronously with the first friction plate; Under the action of external force, the screen-connecting bracket can overcome the friction resistance of the first friction plate to the screen-connecting bracket and rotate.

2. The screen flipping transmission device according to claim 1, characterized in that: The screen-connecting bracket comprises: A bracket body and a second friction plate connected to the bracket body; The first friction plate is in contact with the bracket body through the second friction plate, and the second friction plate can be driven to rotate by the first friction plate to drive the screen-connecting bracket to rotate synchronously.

3. The screen flipping transmission device according to claim 2, characterized in that: Also includes: a third friction plate, the third friction plate being rotatable with the axis of the main shaft as a rotation axis, the third friction plate being arranged to be transmission-connected with the first friction plate and to rotate synchronously; The third friction plate and the second friction plate are sequentially arranged along the axis direction of the main shaft; Under the action of external force, the screen-connecting bracket can overcome the friction resistance of the first friction plate and the third friction plate to the second friction plate and rotate.

4. The screen flipping transmission device according to claim 3, characterized in that: There are at least two second friction plates, and the number of the third friction plates is the same as that of the second friction plates, or the number of the third friction plates is one less than that of the second friction plates; The second friction plate and the third friction plate are arranged alternately in sequence along the axis direction of the main shaft; The second friction plate is configured to be pushed by the elastic component and move relative to the screen-connecting bracket along the axis direction of the main shaft; The third friction plate is configured to be pushed by the elastic component and move relative to the screen-connecting bracket along the axial direction of the main shaft.

5. The screen flipping transmission device according to claim 4, characterized in that: The screen-connecting bracket comprises: A bracket body and a mounting seat connected to the bracket body, wherein the mounting seat has a guide track arranged along the axial direction of the main shaft, and the second friction plate is connected to the guide track so as to be able to move relative to the mounting seat along the axial direction of the main shaft.

6. The screen flipping transmission device according to claim 4, characterized in that: The main shaft is in transmission connection with the driving mechanism, a first guide groove is provided on the main shaft, and a first guide ridge is correspondingly provided on the third friction plate, and the first guide groove cooperates with the first guide ridge so that the third friction plate can rotate with the main shaft, and can move relative to the screen-connecting bracket along the axis direction of the main shaft when being pushed; or, The screen flipping transmission device also includes: a sleeve part, which is transmission-connected to the driving mechanism, the sleeve part is sleeved on the elastic component and is respectively connected to the first friction plate and the third friction plate, the sleeve part is provided with a second guide groove, the third friction plate is correspondingly provided with a second guide ridge, the second guide ridge cooperates with the second guide groove so that the third friction plate can rotate with the sleeve part, and can move relative to the screen-connecting bracket along the axial direction of the main shaft when pushed.

7. The screen flipping transmission device according to claim 1, characterized in that: Also includes: a return friction plate connected to the driving mechanism so as to rotate synchronously with the first friction plate; A damping friction plate is abutted against the back-eliminating friction plate and is fixedly arranged; The back-return friction plate rubs against the damping friction plate to increase the rotation damping of the output shaft of the driving mechanism.

8. The screen flipping transmission device according to claim 7, characterized in that: The main shaft is in transmission connection with the driving mechanism, and the anti-return friction plate is fixedly connected to the main shaft and rotates coaxially with the main shaft; or, The screen flip transmission device also includes: The sleeve member is transmission-connected with the driving mechanism, and the anti-return friction plate is fixedly connected to the sleeve member and rotates coaxially with the sleeve member.

9. The screen flipping transmission device according to any one of claims 1 to 8, characterized in that: Also includes: a fourth friction plate, connected to the driving mechanism and rotating synchronously with the first friction plate; A fixing component abutting against the fourth friction plate; The connecting screen bracket is located between the fourth friction plate and the first friction plate and abuts against the fourth friction plate and the first friction plate respectively. The fixing component is used to fix the position of the connecting screen bracket in the axial direction of the main shaft through the fourth friction plate.

10. The screen flipping transmission device according to claim 9, characterized in that: The fixing component is a limit clamp, which limits its relative position on the main shaft through a limit groove arranged outside; or, The fixing component is a nut, which is limited in its relative position on the main shaft by the thread provided on the main shaft; A gasket is also arranged between the fixing component and the fourth friction plate.

11. A display device, characterized in that: include: A driving mechanism, a display screen and a screen flipping transmission device as claimed in any one of claims 1 to 10; The display screen is connected to the driving mechanism via the screen flipping transmission device.

12. A display device according to claim 11, characterized in that: The driving mechanism comprises: A motor and a gearbox connected to the motor, wherein the gearbox has an output shaft, the output shaft is drivingly connected to the first friction plate, and the gearbox is configured to enable the motor to be in a one-way locking state.

13. The display device according to claim 11, characterized in that: One side of the display screen is connected to a driving mechanism through the screen flip transmission device, and the other side is connected to another driving mechanism through a screen flip transmission device. The screen flip transmission device is provided with a backlash reduction mechanism, which is used to increase the damping of the output shaft rotation of the driving mechanism connected thereto.

14. A means of transport, characterized in that: The vehicle is equipped with a display device according to any one of claims 11 to 13.

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