Adjusting mechanism of display screen, seat assembly and vehicle

Abstract

The invention discloses an adjusting mechanism of a display screen, a seat assembly and a vehicle, the adjusting mechanism of the display screen comprises the display screen and a driving assembly, the driving assembly comprises a rotating arm, a first driving mechanism and a second driving mechanism, the first driving mechanism is connected with the rotating arm to drive the rotating arm to rotate, and the second driving mechanism is connected with the display screen to drive the rotating arm to rotate. The display screen is driven to rotate relative to the rotating arm. According to the adjusting mechanism of the display screen, the rotating arm is driven to rotate through the first driving mechanism, the second driving mechanism is connected with the display screen to drive the display screen to rotate relative to the rotating arm, the display screen can be pushed out and lifted through rotation of the rotating arm, and a space capable of being overturned relative to the rotating arm can be vacated for the display screen; and the overturning angle of the display screen relative to the rotating arm can be further changed through the second driving mechanism, so that the overturning angle of the display screen is larger, the display screen can be kept at a better visual angle, and the use experience feeling of a user can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle equipment, and in particular to an adjustment mechanism for a display screen, a seat assembly, and a vehicle. Background Art

[0002] To enhance the user experience, displays are often placed on the backs of the front seats or on the center console of a vehicle to facilitate viewing by front or rear passengers. However, in these technologies, the tilt angle of the displays is too small, resulting in the displays being unable to meet the different viewing angles of passengers, thus affecting the user experience. This issue remains to be addressed. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide an adjustment mechanism for a display screen, wherein a first drive mechanism drives a rotary arm to rotate, and a second drive mechanism is connected to the display screen to drive the display screen to rotate relative to the rotary arm. The rotation of the rotary arm can push out and lift the display screen, thereby freeing up space for the display screen to flip relative to the rotary arm. The second drive mechanism can further change the flip angle of the display screen relative to the rotary arm, making the flip angle of the display screen larger, thereby maintaining the display screen at a better viewing angle, which is conducive to improving the user experience.

[0004] The present invention provides a seat assembly comprising the adjustment mechanism of the display screen.

[0005] The present invention also provides a vehicle comprising the seat assembly.

[0006] According to the first aspect of the present invention, the adjustment mechanism of the display screen includes: a display screen; a drive assembly including a rotary arm, a first drive mechanism and a second drive mechanism, wherein the first drive mechanism is connected to the rotary arm to drive the rotary arm to rotate, and the second drive mechanism is connected to the display screen to drive the display screen to rotate relative to the rotary arm.

[0007] According to the adjustment mechanism of the display screen in an embodiment of the present invention, the first driving mechanism drives the rotary arm to rotate, and the second driving mechanism is connected to the display screen to drive the display screen to rotate relative to the rotary arm. The rotation of the rotary arm can push out and lift the display screen, thereby freeing up space for the display screen to be flipped relative to the rotary arm; and the second driving mechanism can further change the flipping angle of the display screen relative to the rotary arm, so that the flipping angle of the display screen is larger, thereby keeping the display screen at a better viewing angle, which is beneficial to improving the user experience.

[0008] According to some embodiments of the present invention, the rotation axis between the rotary arm and the first driving mechanism is a first rotation axis, the rotation axis between the display screen and the rotary arm is a second rotation axis, and the second rotation axis is spaced apart from the first rotation axis.

[0009] According to some embodiments of the present invention, the first rotation axis and the second rotation axis are located at two ends of the spiral arm in the length direction.

[0010] According to some embodiments of the present invention, the display screen has an upper side and a lower side, the length of the display screen between the upper side and the lower side is L, the positive projection of the second rotation axis on the display screen is the rotation axis projection, the distance between the rotation axis projection and the upper side is L1, the distance between the rotation axis projection and the lower side of the display screen is L2, and the absolute value of the difference between L2 and L1 is less than 1 / 3L.

[0011] According to some embodiments of the present invention, the absolute value of the difference between L2 and L1 ranges from 0 to 1 / 8L.

[0012] According to some embodiments of the present invention, a connection point between the first driving mechanism and the rotary arm is a driving connection point, and the driving connection point is located between the first rotation axis and the second rotation axis.

[0013] According to some embodiments of the present invention, the projection point of the first rotation axis on the swing arm is the first rotation point, the projection point of the second rotation axis on the swing arm is the second rotation point, and the first rotation point, the second rotation point and the drive connection point are connected in sequence to form a triangle.

[0014] According to some embodiments of the present invention, the maximum rotatable angle of the display screen is greater than 30°.

[0015] According to some embodiments of the present invention, the maximum rotatable angle of the display screen is 50° to 70°.

[0016] According to some embodiments of the present invention, the display screen has an upper flip limit position and a lower flip limit position. When the display screen is in the upper flip limit position, the angle range between the display screen and the vertical direction is 30° to 40°; when the display screen is in the lower flip limit position, the angle range between the display screen and the vertical direction is 20° to 30°.

[0017] According to some embodiments of the present invention, the rotary arm has a storage position, in which the first rotation axis and the second rotation axis are arranged in an up-down direction.

[0018] According to some embodiments of the present invention, in the storage position, the plane where the first rotation axis and the second rotation axis are located is a vertical plane.

[0019] According to some embodiments of the present invention, in the storage position, the second rotation axis is located below the first rotation axis.

[0020] According to some embodiments of the present invention, the rotary arm has a maximum extended position, and in the maximum extended position, the plane where the first rotation axis and the second rotation axis are located is a horizontal plane.

[0021] According to some embodiments of the present invention, within the rotatable angle range of the swing arm, when the swing arm is at any angular position, the second rotation axis is not higher than the first rotation axis.

[0022] According to some embodiments of the present invention, the drive assembly includes a mounting bracket, the first drive mechanism is mounted on the mounting bracket, the swing arm is rotatably connected to the mounting bracket, and the rotation axis between the swing arm and the mounting bracket constitutes the first rotation axis.

[0023] According to some embodiments of the present invention, the first driving mechanism includes a first driving motor, a lead screw, a slider and a connecting rod, the slider is sleeved on the lead screw and threadedly connected to the lead screw, the first driving motor is transmission-connected to the lead screw to drive the lead screw to rotate, one end of the connecting rod is rotatably connected to the slider and the other end of the connecting rod is rotatably connected to the swing arm.

[0024] According to some embodiments of the present invention, the lead screw extends in an up-down direction.

[0025] According to some embodiments of the present invention, the mounting bracket is provided with a slide rail extending in an up-down direction, and the slider is slidably engaged with the slide rail.

[0026] According to some embodiments of the present invention, the first driving mechanism includes a worm wheel and a worm, the worm is connected to the output end of the first driving motor, the worm wheel is fixed to the lead screw and is coaxially arranged with the lead screw, and the worm wheel is engaged with the worm.

[0027] According to some embodiments of the present invention, a limiting boss is provided on the mounting bracket, and the swing arm has a storage position and a maximum expansion position. At the maximum expansion position, the limiting boss abuts against the swing arm to limit the swing arm from continuing to rotate in the direction from the storage position to the maximum expansion position.

[0028] According to some embodiments of the present invention, the mounting bracket includes a mounting box, the first driving mechanism is disposed in the mounting box, and a side of the mounting box close to the display screen is provided with an avoidance opening for avoiding the rotary arm.

[0029] According to some embodiments of the present invention, the first driving mechanism includes a first driving motor, a lead screw, a slider and a connecting rod, the slider is sleeved on the lead screw and threadedly connected to the lead screw, the first driving motor is transmission-connected to the lead screw to drive the lead screw to rotate, one end of the connecting rod is rotatably connected to the slider and the other end of the connecting rod is rotatably connected to the swing arm, and a shielding plate is provided on the slider, and the shielding plate is used to shield the avoidance opening.

[0030] According to some embodiments of the present invention, a control board is provided in the mounting bracket, and the control board is electrically connected to the first driving mechanism, the second driving mechanism, and the display screen.

[0031] According to some embodiments of the present invention, the control board is connected to the display screen via a first connecting line, the control board is connected to the second driving mechanism via a second connecting line, the first connecting line and the second connecting line constitute a connecting wire harness, a wiring channel is provided on the rotary arm, and at least part of the connecting wire harness is routed along the wiring channel.

[0032] According to some embodiments of the present invention, the mounting bracket is provided with a first rotating hole and a second rotating hole, the rotating arm is provided with a first rotating shaft and a second rotating shaft, the first rotating shaft is rotatably accommodated in the first rotating hole, and the second rotating shaft is rotatably accommodated in the second rotating hole, the wiring channel includes a first wiring channel and a second wiring channel, the first wiring channel is formed in the first rotating shaft, and the second wiring channel is formed in the second rotating shaft.

[0033] According to some embodiments of the present invention, a locking member is provided on the mounting bracket, and the rotary arm has a storage position. At the storage position, the locking member cooperates with the rotary arm to lock the rotary arm at the storage position.

[0034] According to some embodiments of the present invention, the locking member includes an electromagnet and a lock tongue, the electromagnet is installed on the mounting bracket, and the lock tongue is movably connected to the electromagnet so that the lock tongue can move between a locked position and an unlocked position. A lock hole is provided on the rotary arm. When the electromagnet is powered off, the lock tongue is in the locked position and extends into the lock hole. When the electromagnet is powered on, the lock tongue is in the unlocked position and disengages from the lock hole.

[0035] According to some embodiments of the present invention, the lock tongue is rotatably connected to the electromagnet, and the lock tongue includes a locking portion. In the locking position, the locking portion is located in the lock hole, and a guide slope is formed on the surface of the locking portion. The guide slope is used to guide the locking portion to be inserted into or disengaged from the lock hole.

[0036] According to some embodiments of the present invention, the driving assembly further includes a damping assembly, and the damping assembly is provided on the output shaft of the second driving mechanism.

[0037] According to some embodiments of the present invention, the damping assembly includes a damping bracket and a damping shaft, the shell of the second driving mechanism is fixed to the back side of the display screen, the output shaft of the second driving mechanism is connected to the damping shaft and is relatively fixed, the damping bracket is sleeved on the outer peripheral side of the damping shaft and the damping shaft and the damping bracket can rotate relative to each other, and the damping bracket is fixed to the swing arm.

[0038] According to some embodiments of the present invention, the damping shaft includes a shaft body and a flange plate, the flange plate is connected to one axial side of the shaft body, the damping bracket is sleeved on the outer peripheral side of the shaft body, the damping assembly includes a first gasket and a nut, the nut is located on the side of the damping bracket away from the second driving mechanism and is threadedly connected to the shaft body, the first gasket is sleeved on the outer peripheral side of the shaft body and is located on both axial sides of the damping bracket, one of the first gaskets is located between the flange plate and the damping bracket, and the other first gasket is located between the nut and the damping bracket.

[0039] According to some embodiments of the present invention, the damping assembly further comprises one or more spring sheets arranged axially along the damping shaft, the spring sheets being sleeved on the outer peripheral side of the shaft body and located on the side of the damping bracket away from the second driving mechanism, and the spring sheets being located between the nut and the first gasket.

[0040] According to the second embodiment of the present invention, the seat assembly includes: a seat having a seat back; an adjustment mechanism according to the first embodiment of the present invention, wherein the first drive mechanism is installed on the seat, and the display screen is located on the back side of the seat back.

[0041] According to the seat assembly of an embodiment of the present invention, the above-mentioned adjustment mechanism is provided, and the first driving mechanism in the adjustment mechanism is used to drive the swing arm to rotate relative to the seat, and the second driving mechanism is connected to the display screen to drive the display screen to rotate relative to the swing arm, and the first rotation axis and the second rotation axis are set apart. The rotation of the swing arm relative to the seat can make the display screen pushed out and raised, so that the display screen moves relative to the seat, and can also make space for the display screen to be flipped relative to the swing arm; and the flipping angle of the display screen relative to the swing arm can be further changed by the second driving mechanism, so that the flipping angle of the display screen relative to the seat is larger, thereby making the display screen maintain a better viewing angle, which is beneficial to improving the user experience.

[0042] According to some embodiments of the present invention, the angle of the chair back relative to the seat of the chair is adjustable.

[0043] A vehicle according to an embodiment of a third aspect of the present invention includes: a seat assembly according to an embodiment of the second aspect of the present invention.

[0044] According to an embodiment of the present invention, the vehicle includes the above-mentioned seat assembly, and the first driving mechanism in the seat assembly is used to drive the swing arm to rotate relative to the seat, and the second driving mechanism is connected to the display screen to drive the display screen to rotate relative to the swing arm, and the first rotation axis and the second rotation axis are set apart. The rotation of the swing arm relative to the seat can make the display screen pushed out and raised, so that the display screen moves relative to the seat, and can also make space for the display screen to be flipped relative to the swing arm; and the second driving mechanism can further change the flipping angle of the display screen relative to the swing arm, so that the flipping angle of the display screen relative to the seat is larger, thereby making the display screen maintain a better viewing angle, which is beneficial to improving the user experience.

[0045] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0047] Figure 1 is a perspective schematic diagram of a seat assembly according to some embodiments of the present invention;

[0048] Figure 2 yes Figure 1 Schematic diagram of the seat and display screen in different states in the seat assembly;

[0049] Figure 3 yes Figure 1 A schematic diagram of the display screen in the adjustment mechanism of the display screen in the storage position;

[0050] Figure 4 yes Figure 3 A cross-sectional view of the display screen in the stowed position;

[0051] Figure 5 yes Figure 1 A cross-sectional view of the display screen in which the arm of the adjustment mechanism is in the maximum extended position and the display screen is in the first angle position;

[0052] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0053] Figure 7 yes Figure 5 A schematic diagram showing that the arm of the adjustment mechanism of the display screen is in the maximum extended position and the display screen is in the first angle position;

[0054] Figure 8 yes Figure 7 A cross-sectional view of the embodiment of the invention when the arm is in the maximum extended position and the display screen is in the first angle position;

[0055] Figure 9 yes Figure 1 A schematic diagram showing that the arm of the adjustment mechanism of the display screen is in the maximum extended position and the display screen is in the second angle position;

[0056] Figure 10 yes Figure 9 A cross-sectional view of the embodiment of the invention with the arm in the maximum extended position and the display screen in the second angle position;

[0057] Figure 11 yes Figure 1 A schematic diagram showing that the arm of the adjustment mechanism of the display screen is in the maximum extended position and the display screen is in the third angle position;

[0058] Figure 12 yes Figure 11 A cross-sectional view showing the arm in the maximum extended position and the display screen in the third angle position;

[0059] Figure 13 yes Figure 11 An exploded view of a portion of the structure of the adjustment mechanism of the display screen;

[0060] Figure 14 yes Figure 13 A schematic diagram of the assembly of the rotary arm and the first drive mechanism in the adjustment mechanism of the display screen, wherein the rotary arm is in the storage position;

[0061] Figure 15 yes Figure 14A schematic diagram of the assembly of the rotary arm and the first drive mechanism in the adjustment mechanism of the display screen, wherein the rotary arm is in the maximum extended position;

[0062] Figure 16 yes Figure 14 A schematic diagram of a locking member in an adjustment mechanism of a display screen;

[0063] Figure 17 yes Figure 13 A schematic diagram of the assembly of the display screen, the second driving mechanism, and the damping component in the adjustment mechanism of the display screen;

[0064] Figure 18 yes Figure 17 Exploded diagram of the damping component in;

[0065] Figure 19 yes Figure 1 Simplified schematic diagram of the projection of the second rotation axis in the adjustment mechanism of the display screen on the display screen.

[0066] Reference numerals:

[0067] 100. Seat assembly;

[0068] 1. Seat; 11. Chair back;

[0069] 200. Regulatory agencies;

[0070] 2. Display screen; 21. Upper side; 22. Lower side; 23. Touch switch; 24. Connecting wire harness;

[0071] 3. Drive assembly; 31. Swing arm; 311. First rotation axis; 312. Second rotation axis; 313. Drive connection point; 314. Wiring channel; 315. First wiring channel; 316. Second wiring channel; 317. First rotating shaft; 318. Second rotating shaft; 319. Lock hole; 320. Swing arm cover; 321. Bearing cover; 322. Bearing bracket;

[0072] 33. First drive mechanism; 331. First drive motor; 332. Lead screw; 333. Slider; 334. Shield; 335. Connecting rod; 336. Worm gear; 337. Worm; 338. First motor bracket;

[0073] 34. Second driving mechanism; 341. Second motor bracket; 342. Housing; 343. Output shaft;

[0074] 35. Mounting bracket; 351. Position-limiting boss; 352. Mounting box; 353. Avoidance opening; 354. Control panel; 355. First rotating hole; 357. Locking member; 358. Electromagnet; 359. Lock tongue; 360. Locking portion; 361. Guide slope; 362. Front housing; 363. Rear housing; 364. Buffer pad; 365. Slide rail; 366. Slide rail bracket;

[0075] 37. Damping assembly; 371. Damping bracket; 372. Damping shaft; 373. Shaft body; 374. Flange plate; 375. First gasket; 376. Nut; 377. Spring leaf. DETAILED DESCRIPTION

[0076] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0077] Reference below Figures 1-19 An adjustment mechanism 200 for a display screen according to an embodiment of the present invention is described.

[0078] Reference Figure 1 、 Figure 12 and Figure 13 According to the display screen adjustment mechanism 200 of the first embodiment of the present invention, the display screen adjustment mechanism 200 includes a display screen 2 and a drive assembly 3. The drive assembly 3 includes a rotary arm 31, a first drive mechanism 33, and a second drive mechanism 34. The first drive mechanism 33 is connected to the rotary arm 31 to drive the rotary arm 31 to rotate. The second drive mechanism 34 is connected to the display screen 2 to drive the display screen 2 to rotate relative to the rotary arm 31.

[0079] The first drive mechanism 33 is connected to the arm 31 to drive the arm 31 to rotate, thereby pushing out and raising the display screen 2 and creating space for the display screen 2 to flip relative to the arm 31. The second drive mechanism 34 is connected to the display screen 2 to drive the display screen 2 to rotate relative to the arm 31, thereby changing the flip angle of the display screen 2 relative to the arm 31, allowing the display screen 2 to flip to a larger angle, thereby maintaining the display screen 2 at an optimal viewing angle, thereby improving the user experience.

[0080] For example, the adjustment mechanism 200 of the display screen can be applied to a vehicle. When the adjustment mechanism 200 of the display screen is installed on the rear side of the seat back 11 of the seat 100, the display screen 2 has a storage position and an extended position. When the display screen 2 is in the storage position, the display screen 2 can be semi-embedded in the back side of the seat back 11. When the display screen 2 is in the extended position, the first drive mechanism 33 drives the swing arm 31 to rotate relative to the seat 1, so that the display screen 2 can be pushed out and raised relative to the seat 1, thereby realizing the flipping of the display screen 2 relative to the seat 1, and the swing arm 31 is raised and extended relative to the seat 1, which can make room for the flipping of the display screen 2. When the swing arm 31 is adjusted to the maximum angle position, it is connected to the display screen 2 through the second drive mechanism 34 to drive the display screen 2 to flip relative to the swing arm 31. The angle of the display screen 2 relative to the swing arm 31 can be adjusted to further adjust the angle of the display screen 2 relative to the seat 1, so that the flipping angle of the display screen 2 relative to the seat 1 is larger, so as to provide the user with a better viewing angle.

[0081] When the seat 1 is flipped at a large angle, the first drive mechanism 33 drives the swing arm 31 to rotate relative to the seat 1, and the second drive mechanism 34 drives the display screen 2 to rotate relative to the swing arm 31, so that the display screen 2 can be flipped at a larger angle relative to the seat 1, and the display screen 2 can still be maintained at a better viewing angle, thereby improving the user experience.

[0082] According to the adjustment mechanism 200 of the display screen in an embodiment of the present invention, the first driving mechanism 33 is used to drive the rotary arm 31 to rotate, and the second driving mechanism 34 is connected to the display screen 2 to drive the display screen 2 to rotate relative to the rotary arm 31. The rotation of the rotary arm 31 can push out and lift the display screen 2, thereby freeing up space for the display screen 2 to be flipped relative to the rotary arm 31; and the second driving mechanism 34 can further change the flipping angle of the display screen 2 relative to the rotary arm 31, so that the flipping angle of the display screen 2 is larger, thereby allowing the display screen 2 to maintain a better viewing angle, which is beneficial to improving the user experience.

[0083] Reference Figure 4 and Figure 13The rotation axis between the swing arm 31 and the first drive mechanism 33 is a first rotation axis 311, and the rotation axis between the display screen 2 and the swing arm 31 is a second rotation axis 312. The second rotation axis 312 is spaced apart from the first rotation axis 311. The first drive mechanism 33 drives the swing arm 31 to rotate, and the second drive mechanism 34 drives the display screen 2 to rotate relative to the swing arm 31. The spacing of the first rotation axis 311 and the second rotation axis 312 allows the display screen 2 to flip over at a greater angle. By adjusting the flip angle of the display screen 2 relative to the swing arm 31, the display screen 2 can be maintained at an optimal viewing angle, thereby improving the user experience. Furthermore, the upward travel of the display screen 2 can be minimized. When the display screen 2 needs to be adjusted to a desired angular position, for example, the first drive mechanism 33 drives the swing arm 31 to rotate, and the second drive mechanism 34 drives the display screen 2 to rotate relative to the swing arm 31 simultaneously. This allows the display screen 2 to be quickly adjusted into position, reducing user waiting time and further improving the user experience.

[0084] Reference Figure 13 and Figure 14 According to some embodiments of the present invention, the first rotation axis 311 and the second rotation axis 312 are located at both ends of the length direction of the rotary arm 31, so that the rotary arm 31 and the display screen 2 can rotate independently and without affecting each other to adjust the position of the display screen 2, and can enable the display screen 2 to obtain a larger angle adjustment space.

[0085] For example, when the angular position of the display screen 2 needs to be adjusted, the position of the swing arm 31 can be adjusted to adjust the height of the positioning display screen 2. The first rotation axis 311 and the second rotation axis 312 are located at both ends of the length direction of the swing arm 31. When the swing arm 31 rotates, space can be made for the display screen 2 to flip over. At the same time, by adjusting the angle of the display screen 2 relative to the swing arm 31 to adjust the display screen 2 to the desired viewing angle, it is beneficial to improve the user experience.

[0086] Reference Figure 4 、 Figure 8 and Figure 19According to some embodiments of the present invention, the display screen 2 has an upper side 21 and a lower side 22, the length of the display screen 2 between the upper side 21 and the lower side 22 is L, the orthographic projection of the second rotation axis 312 on the display screen 2 is the rotation axis projection, the distance between the rotation axis projection and the upper side 21 is L1, the distance between the rotation axis projection and the lower side 22 of the display screen 2 is L2, and the absolute value of the difference between L2 and L1 is less than 1 / 3L. For example, the absolute value of the difference between L2 and L1 can be 0, 1 / 8L, 1 / 6L, 1 / 5L, 1 / 4L, etc. When the absolute value of the difference between L2 and L1 is less than 1 / 3L, the projection of the rotation axis can be close to the center of the display screen 2 in the up and down directions, so that the center of mass of the display screen 2 on both sides of the second rotation axis 312 is more evenly distributed. When the display screen 2 is flipped, the center of mass on both sides of the second rotation axis 312 does not change much, which can reduce or avoid the possibility of serious imbalance and shaking of the display screen 2 during rotation, so that the display screen 2 can be maintained more stably at various angles, thereby improving the user experience.

[0087] For example, if the projection of the rotation axis is located near the lower side 22 of the display screen 2 and the absolute value of the difference between L2 and L1 is greater than 1 / 3L, the distribution of the center of mass of the display screen 2 on both sides of the second rotation axis 312 differs significantly. In this case, applying a certain force causes the display screen 2 to rotate counterclockwise. The greater the acceleration of the applied force, the easier it is for the display screen 2 to flip relative to the swing arm 31. If the acceleration is applied in the opposite direction, the display screen 2 will rotate clockwise. If the direction of the acceleration changes back and forth rapidly, due to the large difference in the distribution of the center of mass of the display screen 2 on both sides of the second rotation axis 312, the display screen 2 will vibrate during rotation, affecting the user's viewing experience. By setting the distance between the projection of the rotation axis and the lower side 22 of the display screen 2 to L2 and the absolute value of the difference between L2 and L1 to less than 1 / 3L, serious imbalance and vibration of the display screen 2 during rotation can be reduced or avoided.

[0088] For example, refer to Figure 19 , with the projection of the rotation axis as the boundary, point a represents the centroid of the portion from the upper side 21 of the display screen 2 to the projection of the rotation axis, and point b represents the centroid of the portion from the lower side 22 of the display screen 2 to the projection of the rotation axis.

[0089] Reference Figure 4 、 Figure 8 and Figure 19According to some embodiments of the present invention, the absolute value of the difference between L2 and L1 ranges from 0 to 1 / 8L. For example, the absolute value of the difference between L2 and L1 can be 0, 1 / 15L, 1 / 12L, 1 / 9L, 1 / 8L, etc. By ensuring that the absolute value of the difference between L2 and L1 is not less than 0, the projection of the rotation axis can be close to the center of the display screen 2 in the vertical direction, so that the center of mass of the display screen 2 on both sides of the second rotation axis 312 is more evenly distributed, reducing or avoiding the jitter of the display screen 2 caused by the displacement of the center of mass during rotation; by ensuring that the absolute value of the difference between L2 and L1 is not greater than 1 / 8L, the projection of the rotation axis can be close to the center of the display screen 2 in the vertical direction, and a certain error is left between the second rotation axis 312 and the center of the display screen 2 in the vertical direction, making the assembly between the swing arm 31 and the display screen 2 more convenient.

[0090] By setting the absolute value of the difference between L2 and L1 to be in the range of 0 to 1 / 8L, the display screen 2 can be more stably maintained at various angles, and the assembly between the rotary arm 31 and the display screen 2 can be more convenient.

[0091] Reference Figure 9 、 Figure 10 and Figure 12 According to some embodiments of the present invention, the connection point between the first driving mechanism 33 and the swing arm 31 is a driving connection point 313, and the driving connection point 313 is located between the first rotation axis 311 and the second rotation axis 312. The driving connection point 313 is located between the first rotation axis 311 and the second rotation axis 312, which can distribute the driving force of the first driving mechanism more evenly to both ends of the swing arm 31 in the longitudinal direction, and helps to balance the center of mass of the swing arm 31 on both sides of the driving connection point 313, so that the swing arm 31 rotates more smoothly, reduces or avoids the possibility of shaking caused by excessive gravity on one side of the swing arm 31, and thus improves the overall stability of the adjustment mechanism 200 of the display screen.

[0092] Reference Figure 8 、 Figure 10 and Figure 12According to some embodiments of the present invention, the projection point of the first rotation axis 311 on the swing arm 31 is the first rotation point, the projection point of the second rotation axis 312 on the swing arm 31 is the second rotation point, and the first rotation point, the second rotation point, and the driving connection point 313 are sequentially connected to form a triangle. By arranging the driving connection point 313 between the first rotation point and the second rotation point, and the first rotation point, the second rotation point, and the driving connection point 313 are not arranged collinearly, the first rotation point, the second rotation point, and the driving connection point 313 form a triangular structure, so that the driving connection point 313 is away from the line connecting the first rotation point and the second rotation point, and the driving connection point 313 is not collinear with the first rotation point and the second rotation point. This can maximize the torque required for the swing arm 31 in the rotation direction, so that the display screen 2 can be flipped more smoothly relative to the swing arm 31. This can prevent the display screen 2 from being unable to flip relative to the swing arm 31 due to insufficient driving force at both ends of the swing arm 31 in the longitudinal direction, and can also prevent damage to the first driving mechanism 33 due to excessive driving force at either end of the swing arm 31 in the longitudinal direction.

[0093] The driving force of the first driving mechanism 33 on the swing arm 31 is effectively dispersed to the first rotation point and the second rotation point, so that when the swing arm 31 rotates, the driving force at the first rotation point and the second rotation point is more uniform, making the swing arm 31 rotate more smoothly, reducing or avoiding the possibility of excessive force on a single point causing stress concentration and generating jitter.

[0094] The excessive concentration of driving force on the first rotation point or the second rotation point may cause the center of mass of the rotary arm 31 to shift, and the rotary arm 31 may easily shake.

[0095] Reference Figure 1 、 Figure 9 and Figure 11 According to some embodiments of the present invention, the maximum rotatable angle of the display screen 2 is greater than 30°. For example, the maximum rotatable angle of the display screen 2 can be 35°, 45°, 50°, 60°, 70°, etc. By allowing the display screen 2 to rotate to a maximum angle greater than 30°, the display screen 2 can be adjusted to maintain a better viewing angle, thereby improving the user experience.

[0096] For example, when the adjustment mechanism 200 of the display screen is installed on the rear side of the backrest 11 of the vehicle seat 100, the display screen 2 can be flipped clockwise or counterclockwise relative to the seat 1. When the seat 1 is flipped forward or backward, the display screen 2 can be flipped clockwise or counterclockwise relative to the seat 1, and the maximum angle at which the display screen 2 can be rotated is greater than 30°, so that the display screen 2 can still maintain a better viewing angle, thereby improving the user experience.

[0097] Reference Figure 9 and Figure 11 According to some embodiments of the present invention, the maximum rotatable angle of the display screen 2 is 50° to 70°. For example, the maximum rotatable angle of the display screen 2 is 50°, 55°, 60°, 65°, 70°, etc. By allowing the display screen 2 to rotate to a maximum angle of not less than 50°, the display screen 2 can maintain a better viewing angle, which is conducive to improving the user experience. By allowing the display screen 2 to rotate to a maximum angle of not more than 70°, the possibility of interference between the display screen 2 and other components when flipped to the maximum angle can be reduced or avoided.

[0098] The maximum rotatable angle of the display screen 2 is 50° to 70°, so that the display screen 2 can maintain a better viewing angle, which is beneficial to improving the user experience and can reduce or avoid the possibility of interference with other components when the display screen 2 is flipped to the maximum angle.

[0099] Reference Figure 1 and Figure 9 According to some embodiments of the present invention, the display screen 2 has an upper flip limit position and a lower flip limit position. When the display screen 2 is in the upper flip limit position, the angle β between the display screen 2 and the vertical direction ranges from 30° to 40°. When the display screen 2 is in the lower flip limit position, the angle α between the display screen 2 and the vertical direction ranges from 20° to 30°.

[0100] For example, when the display screen 2 is in the upper flip limit position, the angle β between the display screen 2 and the vertical direction can be 30°, 33°, 35°, 37°, 40°, etc. By ensuring that the angle β between the display screen 2 and the vertical direction is not less than 30°, the display screen 2 can maintain a better viewing angle; by ensuring that the angle β between the display screen 2 and the vertical direction is not greater than 40°, interference between the display screen 2 and other components when it is in the upper flip limit position can be reduced or avoided.

[0101] For example, when the display screen adjustment mechanism 200 is mounted on the rear side of the seatback 11 of the vehicle seat 100, when the seat 1 is tilted back 20°, the display screen 2 is adjusted to the upper tilt limit position and the angle β between the display screen 2 and the vertical direction is 35°, so that the display screen 2 can maintain a better viewing angle. Of course, the angle β between the display screen 2 and the vertical direction is not limited to this, and the tilt angle of the display screen 2 can be adjusted according to actual needs to improve the user experience.

[0102] For example, when the display screen is in the downward flip limit position, the angle α between the display screen 2 and the vertical direction can be 20°, 23°, 25°, 28°, 30°, etc. By ensuring that the angle α between the display screen 2 and the vertical direction is not less than 20°, the display screen 2 can maintain a better viewing angle; by ensuring that the angle α between the display screen 2 and the vertical direction is not greater than 30°, interference between the display screen 2 and other components when in the downward flip limit position can be reduced or avoided.

[0103] For example, when the display screen adjustment mechanism 200 is mounted on the rear side of the seatback 11 of the vehicle seat 100, when the seat 1 is tilted forward 20°, by adjusting the display screen 2 to the lower limit position and making the angle α between the display screen 2 and the vertical direction 25°, the display screen 2 can still maintain a good viewing angle. Of course, when the display screen 2 is in the lower limit position, the angle α between the display screen 2 and the vertical direction is not limited to this, and the tilt angle of the display screen 2 can be adjusted according to actual needs to improve the user experience.

[0104] Reference Figure 3 and Figure 4 According to some embodiments of the present invention, the swing arm 31 has a stowed position. In the stowed position, the first rotation axis 311 and the second rotation axis 312 are arranged in the vertical direction. In the stowed position, the first rotation axis 311 and the second rotation axis 312 are arranged in the vertical direction, which can fully utilize the vertical space, making the overall structure of the drive assembly 3 compact and reducing the space occupied by the drive assembly 3 in the front-to-back direction. This facilitates a smaller size of the display screen adjustment mechanism 200 in the front-to-back direction and also reduces space occupation.

[0105] Reference Figure 3 and Figure 4 According to some embodiments of the present invention, in the stowed position, the plane on which the first rotation axis 311 and the second rotation axis 312 lie is a vertical plane. In the stowed position, by aligning the plane on which the first rotation axis 311 and the second rotation axis 312 lie, the space occupied by the drive assembly 3 in the front-to-back direction can be minimized, thereby facilitating a smaller size of the display screen adjustment mechanism 200 in the front-to-back direction and minimizing space occupation.

[0106] Reference Figure 2 、 Figure 3 and Figure 4 According to some embodiments of the present invention, in the storage position, the second rotation axis 312 is located below the first rotation axis 311. When the swing arm 31 is rotated from the storage position to the maximum expansion position, the second rotation axis 312 moves upward from below the first rotation axis 311, thereby extending and raising the display screen 2.

[0107] Optionally, the second rotation axis 312 is closer to the display screen 2 than the first rotation axis 311. The plane where the second rotation axis 312 and the first rotation axis 311 are located is a vertical plane, and the second rotation axis 312 is located below the first rotation axis 311. When in the storage position, the display screen 2 can be made as close to the swing arm 31 as possible to reduce the space occupied by the display screen 2 and the driving assembly 3 as a whole in the front-to-back direction.

[0108] For example, when the adjustment mechanism 200 of the display screen is installed on the rear side of the seat back 11 of the vehicle seat 100, the display screen 2 can be semi-embedded in the back side of the seat back 11 when it is in the storage position. When the display screen 2 is in the storage position, the display screen 2 does not extend out of the back side of the seat back 11, which can reduce or avoid the display screen 2 occupying the rear space and affecting the activities of the rear users.

[0109] Reference Figure 10 、 Figure 12 and Figure 13 According to some embodiments of the present invention, the swing arm 31 has a maximum expanded position. At the maximum expanded position, the plane where the first rotation axis 311 and the second rotation axis 312 are located is a horizontal plane. When the swing arm 31 moves from the storage position to the maximum expanded position, the second rotation axis 312 moves from below the first rotation axis 311 to form a horizontal plane with the first rotation axis 311, so that the end of the swing arm 31 close to the second rotation axis 312 can be extended and raised, thereby achieving the extension and raising of the display screen 2, and forming sufficient space between the display screen 2 and the swing arm 31, so that the second driving mechanism 34 can drive the display screen 2 to flip relative to the swing arm 31, and can reduce or avoid interference between the display screen 2 and other components.

[0110] The maximum extended position refers to the position of the rotary arm 31 after it rotates from the storage position to the maximum angle along the set direction.

[0111] Reference Figure 2 、 Figure 10 and Figure 12 According to some embodiments of the present invention, within the rotatable angle range of the swing arm 31, when the swing arm 31 is at any angular position, the second rotation axis 312 is not higher than the first rotation axis 311, which helps to maintain the stability of the swing arm 31, thereby allowing the display screen 2 to be more stably maintained at the set angle position, reducing the instability caused by the excessively high center of mass of the display screen 2 and the drive assembly 3.

[0112] Reference Figure 2 、 Figure 10 and Figure 13According to some embodiments of the present invention, the drive assembly 3 includes a mounting bracket 35, the first drive mechanism 33 is mounted on the mounting bracket 35, the swing arm 31 is rotatably connected to the mounting bracket 35, and the rotation axis between the swing arm 31 and the mounting bracket 35 constitutes a first rotation axis 311. The mounting bracket 35 can support and fix the first drive mechanism 33. The swing arm 31 is rotatably connected to the mounting bracket 35, allowing the swing arm 31 to rotate relative to the mounting bracket 35.

[0113] For example, when the display screen adjustment mechanism 200 is mounted on the rear side of the seat back 11 of a vehicle seat 100, the mounting bracket 35 is detachably mounted on the seat 1, which facilitates maintenance or replacement of the drive assembly 3. The swing arm 31 is rotatably connected to the mounting bracket 35, allowing the swing arm 31 to rotate relative to the mounting bracket 35.

[0114] For example, the first driving mechanism 33 is detachably mounted on the mounting bracket 35 , which can facilitate maintenance or replacement of the first driving mechanism 33 .

[0115] Optionally, a swing arm cover 320 is provided on one side of the swing arm 31 near the chair back 11, and the swing arm cover 320 is threadedly connected to the swing arm 31 via bolts. The bolted threaded connection between the swing arm cover 320 and the swing arm 31 allows for a detachable connection between the swing arm cover 320 and the swing arm 31, making it easier to install other components within the swing arm 31.

[0116] Reference Figure 13-15 According to some embodiments of the present invention, the first drive mechanism 33 includes a first drive motor 331, a lead screw 332, a slider 333, and a connecting rod 335. The slider 333 is sleeved on the lead screw 332 and threadedly connected to the lead screw 332. The first drive motor 331 is rotatably connected to the lead screw 332 to drive the lead screw 332 to rotate. One end of the connecting rod 335 is rotatably connected to the slider 333, and the other end of the connecting rod 335 is rotatably connected to the swing arm 31. The first drive motor 331 is rotatably connected to the lead screw 332, and the operation of the first drive motor 331 can drive the lead screw 332 to rotate. The slider 333 is sleeved on the lead screw 332 and is threadedly connected to the lead screw 332. Rotation of the lead screw 332 drives the slider 333 to slide along the extension direction of the lead screw 332. The threaded connection between the slider 333 and the lead screw 332 simplifies the connection between the slider 333 and the lead screw 332 and enhances the stability of the lead screw 332, allowing the lead screw 332 to be stably maintained at a predetermined position. For example, rotation of the lead screw 332 drives the slider 333 to slide along the extension direction of the lead screw 332, but the slider 333's own upward and downward sliding does not drive the lead screw 332 to rotate. This allows the slider 333 and the lead screw 332 to self-lock, thereby enhancing the stability of the lead screw 332.

[0117] One end of the connecting rod 335 is rotatably connected to the slider 333 and the other end of the connecting rod 335 is rotatably connected to the swing arm 31. The sliding of the slider 333 can drive the connecting rod 335 to rotate, and the rotation of the connecting rod 335 can drive the swing arm 31 to rotate around the first rotation axis 311, thereby realizing the first driving mechanism 33 driving the swing arm 31 to rotate.

[0118] Optionally, a first motor bracket 338 is provided on the outer peripheral side of the first drive motor 331, and the first motor bracket 338 is fixed to the mounting bracket 35. The first motor bracket 338 can support and fix the first drive motor 331. By fixing the first motor bracket 338 to the mounting bracket 35, the first drive motor 331 can be fixedly connected to the mounting bracket 35.

[0119] Reference Figure 13-15 According to some embodiments of the present invention, the lead screw 332 extends in the vertical direction. Since the slider 333 is sleeved on the lead screw 332 and the slider 333 is threadedly connected to the lead screw 332, the lead screw 332 extending in the vertical direction can cause the slider 333 to slide in the vertical direction. The vertical sliding of the slider 333 can drive the connecting rod 335 to move in the vertical direction. The vertical rotation of the connecting rod 335 can drive the rotary arm 31 to rotate in the vertical direction, thereby enabling the first driving mechanism 33 to drive the rotary arm 31 to rotate in the vertical direction, thereby achieving the raising or retracting of the rotary arm 31.

[0120] Reference Figure 13-15 According to some embodiments of the present invention, the mounting bracket 35 is provided with a slide rail 365 extending in the vertical direction, and the slider 333 is slidably engaged with the slide rail 365. The slide rail 365 facilitates the movement of the slider 333 and ensures that the slider 333 slides along a set trajectory, thereby preventing the slider 333 from interfering with or colliding with other devices (e.g., the second drive mechanism 34) during the sliding process.

[0121] Optionally, a slide rail bracket 366 is provided on the mounting bracket 35 , the slide rail 365 is fixed to the slide rail bracket 366 , and the slide rail bracket 366 is threadedly connected to the mounting bracket 35 via bolts.

[0122] Reference Figure 13-15According to some embodiments of the present invention, the first drive mechanism 33 includes a worm gear 336 and a worm 337. The worm 337 is connected to the output end of the first drive motor 331. The worm gear 336 is fixed to the lead screw 332 and is coaxially arranged with the lead screw 332. The worm gear 336 and the worm 337 are meshed. The first drive motor 331 can drive the worm 337 to rotate. Through the meshing of the worm gear 336 and the worm 337, the rotation of the worm 337 can drive the worm gear 336 to rotate. Because the worm gear 336 is fixed to the lead screw 332 and is coaxially arranged with the lead screw 332, the rotation of the worm gear 336 can drive the lead screw 332 to rotate, thereby realizing a drivable connection between the first drive motor 331 and the lead screw 332.

[0123] The worm gear 336 and the lead screw 332 are coaxially arranged to make the worm gear 336 and the lead screw 332 rotate more smoothly.

[0124] Optionally, the first drive motor 331 includes a planetary gearbox connected to the motor shaft of the first drive motor 331. Through the meshing action of the multi-stage gears of the planetary gearbox, the high-speed rotation output of the motor shaft can be initially reduced in speed and torque increased, thereby converting the high-speed, low-torque output of the first drive motor 331 into a low-speed, high-torque output; the worm 337 is connected to the motor shaft after being reduced in speed by the planetary gearbox, and the worm 337 is meshed with the worm wheel 336, thereby achieving a second reduction in speed and torque increase; the rotation of the lead screw 332 drives the slider 333 to slide along the extension direction of the lead screw 332, thereby achieving a third reduction in speed and torque increase. Through the planetary gearbox, the meshing of the worm 337 and the worm wheel 336, and the slider 333 being sleeved on the lead screw 332 and the slider 333 being threadedly connected to the lead screw 332, a three-stage reduction in speed and torque increase power output of the first drive mechanism 33 can be achieved, thereby gradually converting the high-speed, low-torque mechanical energy output by the first drive motor 331 into low-speed, high-torque energy suitable for driving the swing arm 31.

[0125] Reference Figure 10 、 Figure 12 and Figure 15 According to some embodiments of the present invention, a limiting boss 351 is provided on the mounting bracket 35. The swing arm 31 has a stowed position and a maximum extended position. In the maximum extended position, the limiting boss 351 abuts against the swing arm 31 to limit further rotation of the swing arm 31 from the stowed position to the maximum extended position. In the maximum extended position, the limiting boss 351 can limit the swing arm 31 to limit further rotation of the swing arm 31 from the stowed position to the maximum extended position, allowing the swing arm 31 to remain more stably in the maximum extended position, thereby enhancing the overall stability of the swing arm 31 and the display screen 2.

[0126] Optionally, the first drive mechanism 33 includes a first drive motor 331, a screw 332, a slider 333 and a connecting rod 335. The slider 333 is sleeved on the screw 332 and the slider 333 is threadedly connected to the screw 332. The first drive motor 331 and the screw 332 can be transmission-connected to drive the screw 332 to rotate. One end of the connecting rod 335 is rotatably connected to the slider 333 and the other end of the connecting rod 335 is rotatably connected to the swing arm 31. When the swing arm 31 is in the maximum extended position, the limiting boss 351 is abutted against the swing arm 31 to limit the swing arm 31 from continuing to rotate in the direction from the storage position to the maximum extended position, and the connecting rod 335 always applies an upward thrust to the swing arm 31, so that the swing arm 31 is more stably maintained in the maximum extended position.

[0127] Reference Figure 12-14 According to some embodiments of the present invention, the mounting bracket 35 includes a mounting box 352, within which the first drive mechanism 33 is disposed. A clearance opening 353 is provided on the side of the mounting box 352 adjacent to the display screen 2 for circumventing the swing arm 31. The mounting box 352 provides support and protection for the first drive mechanism 33, preventing damage to the first drive mechanism 33 due to external impacts. The clearance opening 353 facilitates the extension and retraction of the swing arm 31 during rotation, and further enhances the overall compactness of the swing arm 31, first drive mechanism 33, and mounting box 352.

[0128] Optionally, the installation box 352 includes a front shell 362 and a rear shell 363 , the front shell 362 and the rear shell 363 are connected by screw threads via bolts, and the first driving mechanism 33 is disposed between the front shell 362 and the rear shell 363 .

[0129] Reference Figure 12 、 Figure 13 and Figure 15 According to some embodiments of the present invention, the first driving mechanism 33 includes a first driving motor 331, a screw 332, a slider 333 and a connecting rod 335. The slider 333 is sleeved on the screw 332 and the slider 333 is threadedly connected to the screw 332. The first driving motor 331 and the screw 332 can be transmission-connected to drive the screw 332 to rotate. One end of the connecting rod 335 is rotatably connected to the slider 333 and the other end of the connecting rod 335 is rotatably connected to the swing arm 31. A shielding plate 334 is provided on the slider 333, and the shielding plate 334 is used to shield the avoidance opening 353. The shielding plate 334 is used to block the avoidance opening 353, which can increase the shielding area of the avoidance opening 353, thereby effectively shielding the internal structure of the installation box 352, avoiding the structure inside the installation box 352 from being directly exposed to the outside, and reducing the possibility of dust or other impurities entering the interior of the installation box 352 through the avoidance opening 353, thereby shielding the internal structure of the installation box 352 and improving the overall aesthetics of the adjustment mechanism 200 of the display screen.

[0130] For example, when the swing arm 31 rotates from the storage position to the maximum extended position, the first drive motor 331 drives the slider 333 to slide upward via the screw 332 so that the swing arm 31 extends and lifts through the avoidance opening 353. At the same time, the slider 333 slides upward to drive the shielding plate 334 to move upward. The shielding plate 334 can block the area below the swing arm 31 at the avoidance opening 353. Through the cooperation of the swing arm 31 and the shielding plate 334, the shielding area of the avoidance opening 353 can be increased, so that the internal structure of the installation box 352 can be effectively shielded, and the structure inside the installation box 352 is prevented from being directly exposed to the outside, and the possibility of dust or other impurities entering the interior of the installation box 352 through the avoidance opening 353 is reduced, thereby shielding the internal structure of the installation box 352 and improving the overall aesthetics of the adjustment mechanism 200 of the display screen.

[0131] For another example, when the swing arm 31 rotates from the maximum extended position to the storage position, the first drive motor 331 drives the slider 333 to slide downward via the screw rod so that the swing arm 31 moves through the avoidance opening 353 to the storage position. At the same time, the downward sliding of the slider 333 can drive the shielding plate 334 to move downward. The downward movement of the shielding plate 334 can reduce the blocking area of the avoidance opening 353, so that the swing arm 31 can move more smoothly through the avoidance opening 353 to the storage position.

[0132] Optionally, an avoidance gap is formed on the shielding plate 334. When the swing arm 31 is in the maximum extended position, at least part of the connecting rod 335 is accommodated in the avoidance gap. The avoidance gap can facilitate at least part of the connecting rod 335 to be accommodated therein, which can reduce or avoid the possibility of interference between the connecting rod 335 and the shielding plate 334 during the rotation of the swing arm 31, and can make the overall structure of the first drive mechanism 33 compact.

[0133] Reference Figure 5 、 Figure 6 and Figure 13 According to some embodiments of the present invention, a control board 354 is provided in the mounting bracket 35, and the control board 354 is electrically connected to the first drive mechanism 33, the second drive mechanism 34, and the display screen 2. By electrically connecting the control board 354 to the first drive mechanism 33, the second drive mechanism 34, and the display screen 2, the control board 354 can supply power to the first drive mechanism 33, the second drive mechanism 34, and the display screen 2 and transmit information.

[0134] Optionally, a touch switch 23 is provided on the control panel 354. When the display screen 2 is in the storage position, the display screen 2 can trigger the touch switch to control the first driving mechanism 33 and the second driving mechanism 34 to stop moving.

[0135] Reference Figure 5 、 Figure 13 and Figure 15According to some embodiments of the present invention, the control board 354 is connected to the display screen 2 via a first connecting line, and the control board 354 is connected to the second drive mechanism 34 via a second connecting line. The first connecting line and the second connecting line constitute a connecting wire harness 24. A wiring channel 314 is provided on the swing arm 31, and at least a portion of the connecting wire harness 24 is routed along the wiring channel 314. The wiring channel 314 can guide the connecting wire harness 24 to be arranged along a set path. The connecting wire harness 24 can be routed along the wiring channel 314 to connect the control board 354 to the display screen 2 and the second drive mechanism 34. While achieving electrical connection between the control board 354, the display screen 2, and the second drive mechanism 34, it can prevent the connecting wire harness 24 from moving out of position when the display screen 2 is flipped, causing abnormal noise, jamming, or interference between the connecting wire harness 24 and other components (such as the first drive mechanism 33) and hindering the movement of other components. It also facilitates the subsequent maintenance and troubleshooting of the connecting wire harness 24.

[0136] For example, when the swing arm 31 rotates and the display screen 2 flips relative to the swing arm 31, by routing at least part of the connecting harness 24 along the wiring channel 314 of the swing arm 31, the connecting harness 24 can be prevented from occupying the moving space of the swing arm 31 and the display screen 2, effectively reducing or avoiding the possibility of movement jamming of the swing arm 31 and the display screen 2 or loosening of the connection of the connecting harness 24.

[0137] Among them, at least part of the connecting wire harness 24 may be routed along the routing channel 314, including the following situations: for example, part of the connecting wire harness 24 may be routed along the routing channel 314; for another example, all of the connecting wire harness 24 may be routed along the routing channel 314.

[0138] Reference Figure 5 、 Figure 14 and Figure 15 According to some embodiments of the present invention, the mounting bracket 35 is provided with a first rotation hole 355 and a second rotation hole. The swing arm 31 is provided with a first rotation shaft 317 and a second rotation shaft 318. The first rotation shaft 317 is rotatably received in the first rotation hole 355, and the second rotation shaft 318 is rotatably received in the second rotation hole. The wiring channel 314 includes a first wiring channel 315 and a second wiring channel 316. The first wiring channel 315 is formed within the first rotation shaft 317, and the second wiring channel 316 is formed within the second rotation shaft 318. The first rotation hole 355 facilitates the reception of the first rotation shaft 317 therein, thereby facilitating the assembly between the swing arm 31 and the mounting bracket 35 and making the overall structure of the swing arm 31 and the mounting bracket 35 compact. The second rotation hole facilitates the reception of the second rotation shaft 318 therein, thereby facilitating the assembly between the swing arm 31 and the mounting bracket 35 and making the overall structure of the swing arm 31 and the mounting bracket 35 compact.

[0139] Since the second rotating shaft 318 is closer to the display screen 2 than the first rotating shaft 317, and the first rotating shaft 317 is closer to the control board 354 than the second rotating shaft 318, a first wiring channel 315 is formed in the first rotating shaft 317, and a second wiring channel 316 is formed in the second rotating shaft 318. At least part of the connecting wire harness 24 is routed along the first wiring channel 315 and the second wiring channel 316, which can indirectly enable the control board 354 to supply power to the display screen 2 and reduce the length of the connecting wire harness 24.

[0140] Optionally, a bearing cover 321 is provided on the outer peripheral side of the first rotating shaft 317, and the bearing cover 321 is fixed to the first rotating hole 355 of the mounting bracket 35. For example, the bearing cover 321 and the mounting bracket 35 can be threadedly connected by bolts. By fixing the bearing cover 321 to the first rotating hole 355 of the mounting bracket 35, the first rotating shaft 317 can be supported and fixed, thereby improving the stability of the first rotating shaft 317.

[0141] Optionally, a bearing bracket 322 is sleeved on the outer circumference of the first rotating shaft 317 , and the bearing bracket 322 is threadedly connected to the mounting bracket 35 via bolts. The bearing bracket 322 can provide support for the first rotating shaft 317 to enhance the stability of the first rotating shaft 317 .

[0142] Reference Figure 3 、 Figure 14 and Figure 16 According to some embodiments of the present invention, a locking member 357 is provided on the mounting bracket 35, and the swing arm 31 has a storage position. In the storage position, the locking member 357 cooperates with the swing arm 31 to lock the swing arm 31 in the storage position. When the swing arm 31 is in the storage position, the locking member 357 cooperates with the swing arm 31 to lock the swing arm 31 in the storage position, which can limit the rotation of the swing arm 31, allowing the swing arm 31 to remain in the storage position more stably, reducing or avoiding the possibility of the swing arm 31 continuing to swing or rotate, thereby allowing the display screen 2 to remain in the storage position more stably, reducing or avoiding the possibility of the display screen 2 making abnormal noise due to continued swinging or rotation, and facilitating enhanced stability of the display screen adjustment mechanism 200.

[0143] Optionally, refer to Figure 12The mounting bracket 35 includes a mounting box 352, and the mounting box 352 includes a front shell 362 and a rear shell 363. The front shell 362 and the rear shell 363 are connected by a threaded bolt. The first driving mechanism 33 is arranged between the front shell 362 and the rear shell 363. A buffer pad 364 is provided on the front shell 362. The buffer pad 364 is bonded to the side of the front shell 362 close to the display screen 2. When the swing arm 31 is in the storage position, the locking member 357 cooperates with the swing arm 31 to lock the swing arm 31 in the storage position. The display screen 2 is in a locked state under the tension of the swing arm 31 and the support force of the buffer pad 364, which can make the display screen 2 remain in the storage position more stably, reducing or avoiding the possibility of the display screen 2 loosening or vibrating and generating abnormal noise.

[0144] For example, the cushion 364 may be a rubber member.

[0145] Reference Figure 1 、 Figure 15 and Figure 16 According to some embodiments of the present invention, the locking member 357 includes an electromagnet 358 and a lock tongue 359. The electromagnet 358 is installed on the mounting bracket 35. The lock tongue 359 is movably connected to the electromagnet 358 so that the lock tongue 359 can move between a locked position and an unlocked position. A lock hole 319 is provided on the rotary arm 31. When the electromagnet 358 is powered off, the lock tongue 359 is in the locked position and the lock tongue 359 extends into the lock hole 319. When the electromagnet 358 is powered on, the lock tongue 359 is in the unlocked position and the lock tongue 359 is disengaged from the lock hole 319. For example, a spring is provided between the electromagnet 358 and the lock tongue 359, one end of the spring is connected to the lock tongue 359, and the other end of the spring is connected to the electromagnet 358. When the electromagnet 358 is powered off, the lock tongue 359 moves in a direction away from the electromagnet 358 under the action of the elastic force of the spring, so that the lock tongue 359 extends into the lock hole 319 to limit the swing arm 31 from continuing to swing or rotate; when the electromagnet 358 is powered on, the electromagnet 358 has a pulling force on the lock tongue 359, and this part of the pulling force can overcome the elastic force of the spring, so that the lock tongue 359 moves in a direction close to the electromagnet 358, so that the lock tongue 359 is separated from the lock hole 319.

[0146] For example, at least a portion of the lock tongue 359 is made of a ferromagnetic material, such as iron. When the electromagnet 358 is energized, the electromagnet 358 exerts a magnetic force on the lock tongue 359. This magnetic force constitutes the aforementioned pulling force, which overcomes the elastic force of the spring and causes the lock tongue 359 to move toward the electromagnet 358, thereby disengaging the lock tongue 359 from the lock hole 319.

[0147] Reference Figure 14-16According to some embodiments of the present invention, the locking tongue 359 is rotatably connected to the electromagnet 358. The locking tongue 359 includes a locking portion 360. In the locked position, the locking portion 360 is located in the locking hole 319. A guide slope 361 is formed on the surface of the locking portion 360. The guide slope 361 is used to guide the locking portion 360 to be inserted into or removed from the locking hole 319. The guide slope 361 can guide the locking portion 360 and can insert the locking portion 360 into or remove the locking portion 360 from the locking hole 319 with relatively small force. It can also reduce the degree of damage caused by the locking portion 360 colliding with the end surface of the locking hole 319 during movement, thereby reducing friction and wear of the locking portion 360 during movement.

[0148] Reference Figure 5 、 Figure 6 and Figure 17 According to some embodiments of the present invention, the driving component 3 further includes a damping component 37, which is disposed on the output shaft 343 of the second driving mechanism 34 and can provide a certain damping force to the second driving mechanism 34. When the flipping torque applied to the display screen 2 exceeds the maximum damping friction torque preset by the damping component 37, the damping force provided by the damping component 37 can limit the further flipping of the display screen 2, so that the display screen 2 can be more stably maintained in the maximum expanded position. For example, the possibility of damage to the second driving mechanism 34 due to excessive flipping of the display screen 2 caused by external violence can be reduced or avoided, which is beneficial to extending the service life of the adjustment mechanism 200 of the display screen.

[0149] Reference Figure 13 、 Figure 17 and Figure 18According to some embodiments of the present invention, the damping assembly 37 includes a damping bracket 371 and a damping shaft 372, the housing 342 of the second driving mechanism 34 is fixed to the back side of the display screen 2, the output shaft 343 of the second driving mechanism 34 is connected to the damping shaft 372, and the output shaft 343 of the second driving mechanism 34 is relatively fixed to the damping shaft 372, the damping bracket 371 is sleeved on the outer peripheral side of the damping shaft 372, and the damping shaft 372 and the damping bracket 371 can rotate relative to each other, and the damping bracket 371 is fixed to the swing arm 31. The damping bracket 371 is sleeved on the outer peripheral side of the damping shaft 372. The damping bracket 371 can support and fix the damping shaft 372, and there is a certain friction between the damping shaft 372 and the damping bracket 371. The damping bracket 371 can rotate along with the damping shaft 372 under the drive of the friction force; and when the flipping torque applied to the display screen 2 exceeds the maximum friction torque preset by the damping assembly 37, the damping bracket 371 slips and rotates relative to the shell 342 of the second drive mechanism 34 to limit the display screen 2 from continuing to flip, thereby playing a certain protective role for the second drive mechanism 34, reducing or avoiding the possibility of damage to the second drive mechanism 34 due to excessive flipping of the display screen 2.

[0150] Optionally, the damping bracket 371 may be fixed to the swing arm 31 by bolts, so that the connection between the damping bracket 371 and the swing arm 31 is simple and has strong stability.

[0151] Optionally, a second motor bracket 341 is provided on the outer peripheral side of the second driving mechanism 34, and the second motor bracket 341 is fixed to the back side of the display screen 2. The second motor bracket 341 can provide support and fixation for the second driving mechanism 34. By fixing the second motor bracket 341 to the back side of the display screen 2, the shell 342 of the second driving mechanism 34 can be fixed to the back side of the display screen 2.

[0152] Reference Figure 13 、 Figure 17 and Figure 18According to some embodiments of the present invention, the damping shaft 372 includes a shaft body 373 and a flange plate 374. The flange plate 374 is connected to one axial side of the shaft body 373. The damping bracket 371 is sleeved on the outer circumference of the shaft body 373. The damping assembly 37 includes a first washer 375 and a nut 376. The nut 376 is located on the side of the damping bracket 371 away from the second driving mechanism 34 and is threadedly connected to the shaft body 373. The first washer 375 is sleeved on the outer circumference of the shaft body 373 and is located on both axial sides of the damping bracket 371. One of the first washer 375 is located between the flange plate 374 and the damping bracket 371, and the other first washer 375 is located between the nut 376 and the damping bracket 371. The flange plate 374 can limit the damping shaft 372, ensuring accurate assembly position between the damping shaft 372 and the damping bracket 371. The nut 376 is threadedly connected to the shaft body 373, which makes the connection between the nut 376 and the damping shaft 372 simple and has strong stability, and the nut 376 can provide a certain tightening force for the damping shaft 372. By adjusting the tightness of the nut 376, the size of the tightening force can be adjusted, and then the size of the maximum friction torque of the damping can be adjusted.

[0153] For example, when the display screen 2 is subjected to external violent flipping and the flipping torque applied to the display screen 2 exceeds the preset maximum damping friction torque, the damping bracket 371 slips and rotates relative to the shell 342 of the second drive mechanism 34 to limit the second drive mechanism 34 from continuing to flip, thereby reducing or avoiding the possibility of damage to the second drive mechanism 34 due to violent rotation.

[0154] One of the first gaskets 375 is located between the flange plate 374 and the damping bracket 371, which can enhance the friction between the damping bracket 371 and the damping shaft 372, so that the movement of the damping shaft 372 can drive the damping bracket 371 to move. The other first gasket 375 is located between the nut 376 and the damping bracket 371, which can enhance the friction between the nut 376 and the damping bracket 371, and can reduce or prevent the possibility of the nut 376 loosening.

[0155] Reference Figure 13 、 Figure 17 and Figure 18According to some embodiments of the present invention, the damping assembly 37 further includes one or more spring plates 377 arranged axially along the damping shaft 372. The spring plates 377 are sleeved around the outer circumference of the shaft body 373 and located on the side of the damping bracket 371 away from the second drive mechanism 34. The spring plates 377 are located between the nut 376 and the first washer 375. The spring plates 377 located between the nut 376 and the first washer 375 can adjust the tightening force applied by the nut 376 to achieve an appropriate maximum friction torque for damping the damping assembly 37. While achieving the maximum angle of the display screen 2, the damping bracket can slip and rotate relative to the housing 342 of the second drive mechanism 34 before the second drive mechanism 34 is damaged, thereby limiting excessive flipping of the second drive mechanism 34 and preventing damage to the second drive mechanism 34 due to violent rotation.

[0156] In the description of the present invention, "plurality" means two or more.

[0157] Reference Figure 1 、 Figure 2 and Figure 12 The seat assembly 100 according to the second embodiment of the present invention includes a seat 1 and an adjustment mechanism 200 according to the first embodiment of the present invention. The seat 1 has a seat back 11, a first drive mechanism 33 is installed on the seat 1, and the display screen 2 is located on the back side of the seat back 11.

[0158] According to the seat assembly 100 of an embodiment of the present invention, the first driving mechanism 33 is used to drive the swing arm 31 to rotate relative to the seat 1, and the second driving mechanism 34 is connected to the display screen 2 to drive the display screen 2 to rotate relative to the swing arm 31, and the first rotation axis 311 and the second rotation axis 312 are set apart. The rotation of the swing arm 31 relative to the seat 1 can make the display screen 2 pushed out and raised, so that the display screen 2 moves relative to the seat 1, and can also make space for the display screen 2 to be flipped relative to the swing arm 31; and the second driving mechanism 34 can further change the flipping angle of the display screen 2 relative to the swing arm 31, so that the flipping angle of the display screen 2 relative to the seat 1 is larger, thereby making the display screen 2 maintain a better viewing angle, which is beneficial to improving the user experience.

[0159] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, the angle of the chair back 11 relative to the seat of the chair 1 is adjustable, so that the angle of the chair back 11 relative to the seat of the chair 1 can be adjusted by the user according to actual needs to meet the different usage requirements of the user and enhance the user experience.

[0160] Optionally, the seat assembly 100 includes a control unit and a posture detector. The control unit is connected to the posture detector and the drive assembly 3. The posture detector is arranged inside the seat back 11 and is used to detect the posture position of the seat back 11. The control unit compares the angle difference between the seat back 11 and the initial setting posture in real time, and sends the angle adjustment instruction of the display screen 2 to the drive assembly 3, so that the display screen 2 can adjust the corresponding angle position of the seat back 11 under different initial setting postures, so as to keep the display screen 2 at a better viewing angle and enhance the user experience.

[0161] For example, when the posture detector detects that the seat back 11 is tilted forward 20°, the control unit can control the drive component 3 to raise the display screen 2 and tilt it down 25°, so that the display screen 2 remains at a better viewing angle; for another example, when the posture detector detects that the seat back 11 is in the initial setting posture, the drive component 3 can be controlled to place the swing arm 31 in the storage position, and then place the display screen 2 in the storage position, which can keep the display screen 2 at a better viewing angle and reduce the occupancy of the rear space; for another example, when the posture detector detects that the seat back 11 is tilted backward 20°, the control unit can control the drive component 3 to raise the display screen 2 and tilt it up 35°, so that the display screen 2 remains at a better viewing angle.

[0162] Optionally, the chair back 11 may include an electric switch and a manual switch to control the angle adjustment of the chair back 11 relative to the seat of the chair 1, and the electric switch is electrically connected to the control unit. When the user adjusts the angle of the chair back 11 relative to the seat of the chair 1 through the electric switch, the angle difference between the chair back 11 and the initial setting posture can be synchronously transmitted to the control unit, and while adjusting the angle of the chair back 11 relative to the seat, the flip angle of the display screen 2 is adjusted; when the user adjusts the angle of the chair back 11 relative to the seat of the chair 1 through the manual switch, the posture position of the chair back 11 is detected by the posture detector, and the control unit compares the angle difference between the chair back 11 and the initial setting posture in real time, and sends the display screen 2 angle adjustment instruction to the drive component 3, so that the display screen 2 can be adjusted accordingly when the chair back 11 is in different initial setting postures, so as to keep the display screen 2 at a better viewing angle and improve the user experience.

[0163] Reference Figure 1 and Figure 2 The vehicle according to the third embodiment of the present invention includes the seat assembly 100 according to the second embodiment of the present invention.

[0164] According to an embodiment of the present invention, the vehicle includes the above-mentioned seat assembly 100, and the first driving mechanism 33 in the seat assembly 100 is used to drive the swing arm 31 to rotate relative to the seat 1, and the second driving mechanism 34 is connected to the display screen 2 to drive the display screen 2 to rotate relative to the swing arm 31, and the first rotation axis 311 and the second rotation axis 312 are set apart. The rotation of the swing arm 31 relative to the seat 1 can make the display screen 2 pushed out and raised, so that the display screen 2 moves relative to the seat 1, and can also make space for the display screen 2 to be flipped relative to the swing arm 31; and the second driving mechanism 34 can further change the flipping angle of the display screen 2 relative to the swing arm 31, so that the flipping angle of the display screen 2 relative to the seat 1 is larger, thereby making the display screen 2 maintain a better viewing angle, which is beneficial to improving the user experience.

[0165] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0166] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0167] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0168] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0169] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0170] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A display screen adjustment mechanism, characterized in that: include: Display screen; The driving assembly includes a rotary arm, a first driving mechanism and a second driving mechanism. The first driving mechanism is connected to the rotary arm to drive the rotary arm to rotate. The second driving mechanism is connected to the display screen to drive the display screen to rotate relative to the rotary arm.

2. The display screen adjustment mechanism according to claim 1, characterized in that: The rotation axis between the rotary arm and the first driving mechanism is a first rotation axis, the rotation axis between the display screen and the rotary arm is a second rotation axis, and the second rotation axis is spaced apart from the first rotation axis.

3. The display screen adjustment mechanism according to claim 2, characterized in that: The first rotation axis and the second rotation axis are located at two ends of the rotary arm in the length direction.

4. The display screen adjustment mechanism according to claim 2, characterized in that: The display screen has an upper side and a lower side, the length of the display screen between the upper side and the lower side is L, the orthographic projection of the second rotation axis on the display screen is the rotation axis projection, the distance between the rotation axis projection and the upper side is L1, the distance between the rotation axis projection and the lower side of the display screen is L2, and the absolute value of the difference between L2 and L1 is less than 1 / 3L.

5. The display screen adjustment mechanism according to claim 4, characterized in that: The absolute value range of the difference between L2 and L1 is 0 to 1 / 8L.

6. The display screen adjustment mechanism according to claim 2, characterized in that: The connection point between the first driving mechanism and the rotary arm is a driving connection point, and the driving connection point is located between the first rotation axis and the second rotation axis.

7. The display screen adjustment mechanism according to claim 6, characterized in that: The projection point of the first rotation axis on the swing arm is the first rotation point, the projection point of the second rotation axis on the swing arm is the second rotation point, and the first rotation point, the second rotation point and the drive connection point are connected in sequence to form a triangle.

8. The display screen adjustment mechanism according to claim 1, characterized in that: The maximum rotatable angle of the display screen is greater than 30°.

9. The display screen adjustment mechanism according to claim 8, characterized in that: The maximum rotatable angle of the display screen is 50° to 70°.

10. The display screen adjustment mechanism according to claim 8, characterized in that: The display screen has an upper flip limit position and a lower flip limit position. When the display screen is in the upper flip limit position, the angle between the display screen and the vertical direction ranges from 30° to 40°; when the display screen is in the lower flip limit position, the angle between the display screen and the vertical direction ranges from 20° to 30°.

11. The display screen adjustment mechanism according to claim 2, characterized in that: The rotary arm has a storage position, in which the first rotation axis and the second rotation axis are arranged in a vertical direction.

12. The display screen adjustment mechanism according to claim 11, characterized in that: In the storage position, the plane where the first rotation axis and the second rotation axis lie is a vertical plane.

13. The display screen adjustment mechanism according to claim 11, characterized in that: In the storage position, the second rotation axis is located below the first rotation axis.

14. The display screen adjustment mechanism according to claim 13, characterized in that: The rotary arm has a maximum extended position. At the maximum extended position, the plane where the first rotation axis and the second rotation axis lie is a horizontal plane.

15. The display screen adjustment mechanism according to claim 2, characterized in that: Within the rotatable angle range of the swing arm, when the swing arm is at any angular position, the second rotation axis is not higher than the first rotation axis.

16. The display screen adjustment mechanism according to claim 2, characterized in that: The driving assembly includes a mounting bracket, the first driving mechanism is mounted on the mounting bracket, the swing arm is rotatably connected to the mounting bracket, and the rotation axis between the swing arm and the mounting bracket constitutes the first rotation axis.

17. The display screen adjustment mechanism according to claim 16, characterized in that: The first driving mechanism includes a first driving motor, a lead screw, a slider and a connecting rod. The slider is sleeved on the lead screw and is threadedly connected to the lead screw. The first driving motor is transmission-connected to the lead screw to drive the lead screw to rotate. One end of the connecting rod is rotatably connected to the slider and the other end of the connecting rod is rotatably connected to the swing arm.

18. The display screen adjustment mechanism according to claim 17, characterized in that: The lead screw extends in an up-down direction.

19. The display screen adjustment mechanism according to claim 18, characterized in that: The mounting bracket is provided with a slide rail extending in an up-down direction, and the slider is slidably matched with the slide rail.

20. The display screen adjustment mechanism according to claim 19, characterized in that: The first driving mechanism includes a worm wheel and a worm, the worm is connected to the output end of the first driving motor, the worm wheel is fixed to the lead screw and is coaxially arranged with the lead screw, and the worm wheel is engaged with the worm.

21. The display screen adjustment mechanism according to claim 16, characterized in that: The mounting bracket is provided with a limiting boss, and the swing arm has a storage position and a maximum expansion position. At the maximum expansion position, the limiting boss abuts against the swing arm to limit the swing arm from continuing to rotate in the direction from the storage position to the maximum expansion position.

22. The display screen adjustment mechanism according to claim 16, wherein: The mounting bracket includes a mounting box, the first driving mechanism is arranged in the mounting box, and a side of the mounting box close to the display screen is provided with an avoidance opening for avoiding the rotary arm.

23. The display screen adjustment mechanism according to claim 22, characterized in that: The first driving mechanism includes a first driving motor, a lead screw, a slider and a connecting rod. The slider is sleeved on the lead screw and is threadedly connected to the lead screw. The first driving motor is transmission-connected to the lead screw to drive the lead screw to rotate. One end of the connecting rod is rotatably connected to the slider and the other end of the connecting rod is rotatably connected to the swing arm. A shielding plate is provided on the slider, and the shielding plate is used to shield the avoidance opening.

24. The display screen adjustment mechanism according to claim 16, wherein: A control board is provided in the mounting bracket, and the control board is electrically connected to the first driving mechanism, the second driving mechanism and the display screen.

25. The display screen adjustment mechanism according to claim 24, characterized in that: The control board is connected to the display screen via a first connecting line, and the control board is connected to the second driving mechanism via a second connecting line. The first connecting line and the second connecting line constitute a connecting wire harness. A wiring channel is provided on the rotary arm, and at least part of the connecting wire harness is routed along the wiring channel.

26. The display screen adjustment mechanism according to claim 25, characterized in that: The mounting bracket is provided with a first rotating hole and a second rotating hole, the rotating arm is provided with a first rotating shaft and a second rotating shaft, the first rotating shaft can be rotatably accommodated in the first rotating hole, the second rotating shaft can be rotatably accommodated in the second rotating hole, the wiring channel includes a first wiring channel and a second wiring channel, the first wiring channel is formed in the first rotating shaft, and the second wiring channel is formed in the second rotating shaft.

27. The display screen adjustment mechanism according to claim 16, characterized in that: The mounting bracket is provided with a locking piece, and the swing arm has a storage position. At the storage position, the locking piece cooperates with the swing arm to lock the swing arm at the storage position.

28. The display screen adjustment mechanism according to claim 27, characterized in that: The locking member includes an electromagnet and a lock tongue. The electromagnet is installed on the mounting bracket. The lock tongue is movably connected to the electromagnet so that the lock tongue can move between a locked position and an unlocked position. A lock hole is provided on the rotary arm. When the electromagnet is powered off, the lock tongue is in the locked position and extends into the lock hole. When the electromagnet is powered on, the lock tongue is in the unlocked position and disengages from the lock hole.

29. The display screen adjustment mechanism according to claim 28, characterized in that: The lock tongue is rotatably connected to the electromagnet, and the lock tongue includes a locking portion. In the locked position, the locking portion is located in the lock hole, and a guide slope is formed on the surface of the locking portion. The guide slope is used to guide the locking portion to be inserted into or disengaged from the lock hole.

30. The display screen adjustment mechanism according to any one of claims 1 to 29, characterized in that: The driving assembly further includes a damping assembly, which is arranged on the output shaft of the second driving mechanism.

31. The display screen adjustment mechanism according to claim 30, characterized in that: The damping assembly includes a damping bracket and a damping shaft. The shell of the second driving mechanism is fixed to the back side of the display screen. The output shaft of the second driving mechanism is connected to the damping shaft and is relatively fixed. The damping bracket is sleeved on the outer peripheral side of the damping shaft and the damping shaft and the damping bracket can rotate relative to each other. The damping bracket is fixed to the swing arm.

32. The display screen adjustment mechanism according to claim 31, characterized in that: The damping shaft includes a shaft body and a flange plate, the flange plate is connected to one axial side of the shaft body, the damping bracket is sleeved on the outer peripheral side of the shaft body, the damping assembly includes a first gasket and a nut, the nut is located on the side of the damping bracket away from the second driving mechanism and is threadedly connected to the shaft body, the first gasket is sleeved on the outer peripheral side of the shaft body and is located on both axial sides of the damping bracket, one of the first gaskets is located between the flange plate and the damping bracket, and the other first gasket is located between the nut and the damping bracket.

33. The display screen adjustment mechanism according to claim 32, characterized in that: The damping assembly also includes one or more spring sheets arranged axially along the damping shaft. The spring sheets are sleeved on the outer peripheral side of the shaft body and located on the side of the damping bracket away from the second driving mechanism. The spring sheets are located between the nut and the first washer.

34. A seat assembly, characterized in that include: A seat having a backrest; According to the adjustment mechanism according to any one of claims 1-33, the first drive mechanism is installed on the seat, and the display screen is located on the back side of the chair back.

35. The seat assembly of claim 34, wherein: The angle of the chair back relative to the seat of the chair is adjustable.

36. A vehicle, characterized in that: include: A seat assembly according to claim 34 or 35.

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