Seat armrest, seat, vehicle, posture adjustment assembly and seat armrest screen

Abstract

A vehicle (2000), comprising a seat (1000), wherein the seat (1000) comprises a seat armrest (1) and a seat armrest screen (3), the seat armrest screen (3) comprising a posture adjustment assembly (2) for a display screen (200). The seat armrest (1) comprises an armrest main body (100), the posture adjustment assembly (2) and the display screen (200). The armrest main body (100) has a screen mounting surface (110) provided with a storage recess (120). The posture adjustment assembly (2) is arranged on the armrest main body (100). The display screen (200) has a display surface (210) and is mounted on the posture adjustment assembly (2), and the posture adjustment assembly (2) drives the display screen (200) to turn between a storage position and an extension position. When the display screen (200) is in the storage position, the display screen is stored in the storage recess (120), and the display surface (210) is flush with the screen mounting surface (110). When the display screen (200) is in the extension position, at least part of the display screen is located at the outside of the storage recess (120), and the edge of the display surface (210) adjacent to the screen mounting surface (110) constitutes a turned edge (211) which is flush with the screen mounting surface (110). The seat armrest (1) can store and raise the display screen (200), and the movement of the display screen (200) requires a small space.

Description

Seat armrest, seat, vehicle, posture adjustment component, and seat armrest screen

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 31, 2023, with application number 202311127490.7 and entitled “Seat Armrest, Seat, Vehicle, Posture Adjustment Assembly and Seat Armrest Screen,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of vehicles, and in particular to a seat armrest, a seat, a vehicle, a posture adjustment assembly, and a seat armrest screen. Background Art

[0004] The seat armrest in the related art is usually provided with a display screen, and the display screen can be moved relative to the main body of the seat armrest, and the display screen can be raised for user viewing. However, the display screen in the related art requires a large space when stored and raised, which is not conducive to saving space in the car. At the same time, when the display screen is raised, the entire screen will move forward and the position of the flip edge of the screen will sink, affecting the user's viewing experience. Moreover, the gap between the display screen and the main body of the seat armrest will become smaller, which may cause the hand to be pinched, and the overall dustproof and waterproof performance of the seat armrest are poor.

[0005] Public content

[0006] The present disclosure aims to address at least one of the technical problems existing in the prior art. To this end, one objective of the present disclosure is to provide a chair armrest capable of storing and raising a display screen, requiring minimal space for movement, and having advantages such as a small footprint, ease of viewing, and a sleek appearance.

[0007] The present disclosure also provides a seat having the above-mentioned seat armrest.

[0008] The present disclosure also provides a vehicle having the seat.

[0009] The present disclosure also provides a posture adjustment component for a display screen.

[0010] The present disclosure also proposes a seat armrest screen having the above-mentioned posture adjustment assembly for the display screen.

[0011] In order to achieve the above-mentioned purpose, according to the first aspect embodiment of the present disclosure, a chair armrest is proposed, comprising: an armrest body, the armrest body having a screen mounting surface, the screen mounting surface being provided with a storage groove; a posture adjustment component, the posture adjustment component being provided on the armrest body; and a display screen, the display screen having a display surface, the display screen being mounted on the posture adjustment component, the posture adjustment component driving the display screen to flip between a storage position and an extended position; wherein, when the display screen is in the storage position, it is stored in the storage groove, and the display surface is flush with the screen mounting surface; when the display screen is in the extended position, at least a portion of the display screen is located outside the storage groove, and the edge of the display surface adjacent to the screen mounting surface constitutes a flip edge, and the flip edge is flush with the screen mounting surface.

[0012] The seat armrest according to the embodiment of the present disclosure is capable of storing and raising the display screen, and the space required for the movement of the display screen is small, and has the advantages of occupying a small space, being easy to view, and having a flat appearance.

[0013] According to some embodiments of the present disclosure, the flip axis of the display screen coincides with the flip edge of the display surface.

[0014] According to some embodiments of the present disclosure, the posture adjustment component includes: a bracket, the bracket is connected to the display screen, the bracket includes an arc-shaped plate segment, the bracket drives the display screen to flip around the central axis of the arc-shaped plate segment, and the central axis of the arc-shaped plate segment coincides with the flipping edge of the display surface.

[0015] According to some embodiments of the present disclosure, when the display screen is in the storage position, the arc-shaped plate segment is located inside the armrest body.

[0016] According to some embodiments of the present disclosure, the seat armrest further includes: a cover plate, which is mounted on the display screen; wherein, when the display screen is in the storage position, the cover plate is located in the storage slot; when the display screen is in the extended position, the cover plate covers the portion of the bracket extending out of the storage slot.

[0017] According to some embodiments of the present disclosure, the posture adjustment assembly further includes: a slide rail frame, wherein the relative position of the slide rail frame and the armrest body is fixed, the slide rail frame is constructed with an arc-shaped guide cavity, and the arc-shaped plate segment of the bracket can be slidably engaged with the arc-shaped guide cavity to limit the bracket to rotate around the central axis of the arc-shaped plate segment.

[0018] According to some embodiments of the present disclosure, a damping member is provided between the arc-shaped plate segment and the inner wall of the arc-shaped guide cavity, and the damping member is used to apply a damping force to the rotation of the bracket.

[0019] According to some embodiments of the present disclosure, the damping member is disposed on both axial sides of the arc-shaped plate segment.

[0020] According to some embodiments of the present disclosure, the damping member is a damping sleeve, and plug blocks are provided on both axial sides of the arc-shaped plate segment, and the plug blocks are inserted into the damping sleeve; the arc-shaped guide cavity has a first arc-shaped guide wall and a second arc-shaped guide wall, and the first arc-shaped guide wall and the second arc-shaped guide wall are respectively arranged on both sides of the arc-shaped plate segment in the thickness direction of the arc-shaped plate segment, and each of the damping members is respectively in contact with and cooperates with the first arc-shaped guide wall and the second arc-shaped guide wall.

[0021] According to some embodiments of the present disclosure, the posture adjustment assembly also includes: a shell, which is installed on the armrest body; a driving mechanism, which is installed on the shell; and a transmission mechanism, which is respectively connected to the driving mechanism and the bracket through the transmission mechanism, and the driving mechanism drives the bracket to rotate around the central axis of the arc-shaped plate segment to drive the display screen to flip between the storage position and the extended position.

[0022] According to some embodiments of the present disclosure, the transmission mechanism includes: a gear sleeve, which is in transmission connection with the driving mechanism, the outer peripheral surface of the gear sleeve is provided with first meshing teeth, the outer peripheral surface of the arc-shaped plate segment is provided with second meshing teeth, and the first meshing teeth and the second meshing teeth are meshed.

[0023] According to some embodiments of the present disclosure, the transmission mechanism further includes: a gear shaft, the gear sleeve is transmission-connected to the driving mechanism via the gear shaft, and the gear sleeve is sleeved on the gear shaft and rotates synchronously with the gear shaft.

[0024] According to some embodiments of the present disclosure, the transmission mechanism further includes: an axial limiting mechanism, which is provided on the gear shaft and cooperates with the gear sleeve, and the axial limiting mechanism fixes the position of the gear sleeve in the axial direction of the gear shaft.

[0025] According to some embodiments of the present disclosure, the axial limiting mechanism includes: a ring plate, which is arranged on the outer peripheral surface of the gear shaft; a fixing member, which is installed on the gear shaft, and the gear sleeve is limited between the ring plate and the fixing member in the axial direction of the gear shaft.

[0026] According to some embodiments of the present disclosure, the transmission mechanism further includes: an elastic member, which is sleeved on the gear shaft and abuts between the gear sleeve and the fixing member.

[0027] According to some embodiments of the present disclosure, the transmission mechanism further includes: a gasket, which is sleeved on the gear shaft and located between the elastic member and the gear sleeve.

[0028] According to some embodiments of the present disclosure, the transmission mechanism further includes: a transmission block, which is sleeved on the gear shaft, the transmission block is located between the gear sleeve and the ring plate and rotates synchronously with the gear shaft; and a friction plate, the friction plate is provided between the transmission block and the gear sleeve, and the transmission block transmits the rotation of the gear shaft to the gear sleeve through the friction plate.

[0029] According to some embodiments of the present disclosure, one of the ring plate and the transmission block is provided with a slot and the other is provided with a tooth, and the tooth is inserted into the slot to enable the transmission block to rotate synchronously with the gear shaft.

[0030] According to some embodiments of the present disclosure, the plurality of slots are arranged at intervals along the circumference of the ring plate, the plurality of teeth are arranged at intervals along the circumference of the transmission block, and the plurality of teeth are inserted into the plurality of slots in a one-to-one correspondence.

[0031] According to some embodiments of the present disclosure, the transmission mechanism further includes: a transmission block, which is sleeved on the gear shaft, the transmission block is located between the gear sleeve and the ring plate and rotates synchronously with the gear shaft; and a clutch device, which is arranged between the transmission block and the gear sleeve, and the clutch device controls whether power is transmitted between the transmission block and the gear sleeve.

[0032] According to some embodiments of the present disclosure, a groove is provided on the outer circumferential surface of the gear shaft, and the fixing member is a retaining spring, which is clamped in the groove.

[0033] According to some embodiments of the present disclosure, the driving mechanism is a motor, and the posture adjustment assembly also includes a deceleration and torque-increasing mechanism, through which the gear shaft is transmission-connected to the driving mechanism, and the deceleration and torque-increasing mechanism includes: a first-stage worm, which is sleeved on the motor shaft of the motor and driven to rotate by the motor shaft; a first-stage gear, which is mounted on the housing and meshed with the first-stage worm; a second-stage worm, which is mounted on the housing and rotates synchronously with the first-stage gear; and a second-stage gear, which is sleeved on the gear shaft and rotates synchronously with the gear shaft, and the second-stage gear is meshed with the second-stage worm.

[0034] According to some embodiments of the present disclosure, the central axis of the primary worm coincides with the central axis of the motor shaft, the central axis of the primary gear coincides with the central axis of the secondary worm and is perpendicular to the central axis of the primary worm, and the central axis of the secondary gear coincides with the central axis of the gear shaft and is perpendicular to the secondary worm.

[0035] According to some embodiments of the present disclosure, one of the outer circumference of the gear shaft and the inner circumference of the secondary gear is provided with a transmission rib and the other is provided with a transmission groove, and the transmission rib is inserted into the transmission groove to enable the secondary gear to rotate synchronously with the gear shaft.

[0036] According to some embodiments of the present disclosure, a plurality of the transmission ribs are arranged at intervals along the circumference of the gear shaft, a plurality of the transmission grooves are arranged at intervals along the circumference of the secondary gear, and the plurality of the transmission ribs are inserted into the plurality of the transmission grooves in a one-to-one correspondence.

[0037] According to some embodiments of the present disclosure, the transmission rib is provided on the outer circumferential surface of the gear shaft, and the end of the transmission rib facing away from the gear sleeve has a guide portion, and the height of the guide portion gradually decreases in the direction away from the gear sleeve.

[0038] According to some embodiments of the present disclosure, the shell is constructed with a first limiting surface and a second limiting surface; when the display screen is flipped from the extended position to the storage position, the bracket stops at the first limiting surface; when the display screen is flipped from the storage position to the extended position, the bracket stops at the second limiting surface.

[0039] According to some embodiments of the present disclosure, the bracket also includes a limiting folding plate, which is connected to the side of the arc-shaped plate segment away from the display screen in the arc length direction; when the display screen is flipped from the storage position to the extended position, the limiting folding plate stops at the second limiting surface.

[0040] According to some embodiments of the present disclosure, the posture adjustment component also includes: a circuit board, which is mounted on the housing and connected to the driving mechanism; and a potentiometer, which is mounted on the circuit board, and the potentiometer has a detection gear, which engages with the first meshing tooth to detect the rotation angle information of the gear sleeve and save the rotation angle information on the circuit board.

[0041] According to some embodiments of the present disclosure, the shell includes: an upper cover and a lower cover, the upper cover and the lower cover are connected to each other and jointly define a mounting cavity; a mounting frame, the mounting frame and the circuit board are mounted on the lower cover and located in the mounting cavity, the drive mechanism and the transmission mechanism are mounted on the mounting frame; and a slide rail frame, the slide rail frame is mounted on the mounting frame, the slide rail frame and the lower cover are arranged on opposite sides of the mounting frame, and the arc-shaped plate segment cooperates with the slide rail frame to limit the rotation of the bracket around the central axis of the arc-shaped plate segment.

[0042] According to some embodiments of the present disclosure, the seat armrest further includes: a gesture acquisition device, which is connected to the posture adjustment component, and the posture adjustment component drives the display screen to flip between the storage position and the extended position based on the gesture information collected by the gesture acquisition device.

[0043] According to some embodiments of the present disclosure, the seat armrest further includes: a fingerprint acquisition device, which is connected to the posture adjustment component, and the posture adjustment component drives the display screen to flip between the storage position and the extended position based on the fingerprint information collected by the fingerprint acquisition device.

[0044] According to a second aspect of the present disclosure, a seat is provided, comprising the seat armrest according to the first aspect of the present disclosure.

[0045] The seat according to the second aspect embodiment of the present disclosure can store and raise the display screen by utilizing the seat armrest according to the first aspect embodiment of the present disclosure, and the space required for the movement of the display screen is small, and has the advantages of small space occupation, easy viewing and flat appearance.

[0046] According to a third aspect of the present disclosure, a vehicle is provided, comprising the seat according to the second aspect of the present disclosure.

[0047] The vehicle according to the third aspect embodiment of the present disclosure can store and raise the display screen by utilizing the seat according to the second aspect embodiment of the present disclosure, and the space required for the movement of the display screen is small, which has the advantages of small space occupation, easy viewing and flat appearance.

[0048] Additional aspects and advantages of the present disclosure will be given in part in the description that follows and, in part, will be obvious from the description that follows, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0050] FIG1 is a schematic structural diagram of a seat armrest according to an embodiment of the present disclosure;

[0051] FIG2 is a schematic structural diagram of a display screen in a storage position and a posture adjustment assembly according to an embodiment of the present disclosure;

[0052] FIG3 is a schematic structural diagram of a display screen in an extended position and a posture adjustment assembly according to an embodiment of the present disclosure;

[0053] FIG4 is an exploded view of a display screen and a posture adjustment assembly according to an embodiment of the present disclosure;

[0054] FIG5 is a detailed view of point A in FIG4;

[0055] FIG6 is an exploded view of a posture adjustment assembly according to an embodiment of the present disclosure;

[0056] FIG7 is a schematic structural diagram of a clutch device according to an embodiment of the present disclosure;

[0057] FIG8 is a cross-sectional view of a display screen in a stowed position and a posture adjustment assembly according to an embodiment of the present disclosure;

[0058] 9 is a cross-sectional view of a display screen in an extended position and a posture adjustment assembly according to an embodiment of the present disclosure;

[0059] FIG10 is a schematic structural diagram of a transmission mechanism, a deceleration and torque-increasing mechanism, and a circuit board according to an embodiment of the present disclosure;

[0060] FIG11 is a cross-sectional view of a posture adjustment assembly according to an embodiment of the present disclosure;

[0061] FIG12 is an exploded view of a posture adjustment assembly according to another embodiment of the present disclosure;

[0062] 13 is a cross-sectional view of a display screen in a stowed position and a posture adjustment assembly according to another embodiment of the present disclosure;

[0063] 14 is a cross-sectional view of a display screen in an extended position and a posture adjustment assembly according to another embodiment of the present disclosure;

[0064] FIG15 is a schematic structural diagram of a display screen in a storage position and a posture adjustment assembly according to another embodiment of the present disclosure;

[0065] FIG16 is a schematic structural diagram of a display screen in an extended position and a posture adjustment assembly according to another embodiment of the present disclosure;

[0066] FIG17 is a schematic structural diagram of a display screen and a posture adjustment assembly according to another embodiment of the present disclosure;

[0067] FIG18 is a schematic structural diagram of a mounting bracket according to another embodiment of the present disclosure;

[0068] FIG19 is an exploded view of a bracket and a damping member according to another embodiment of the present disclosure;

[0069] FIG20 is an exploded view of a connecting rod and lead screw mechanism according to another embodiment of the present disclosure;

[0070] FIG21 is a cross-sectional view of a display screen and a posture adjustment assembly when the display screen is in a storage position according to yet another embodiment of the present disclosure;

[0071] 22 is a cross-sectional view of a display screen and a posture adjustment assembly when the display screen is in an extended position according to yet another embodiment of the present disclosure;

[0072] FIG23 is a cross-sectional view of a posture adjustment assembly from another perspective according to yet another embodiment of the present disclosure;

[0073] FIG24 is an exploded view of a posture adjustment assembly according to yet another embodiment of the present disclosure;

[0074] FIG25 is a schematic structural diagram of a bracket of a posture adjustment assembly according to another embodiment of the present disclosure;

[0075] FIG26 is a structural diagram of a mounting frame of a posture adjustment assembly according to yet another embodiment of the present disclosure;

[0076] FIG27 is a schematic block diagram of a chair according to an embodiment of the present disclosure;

[0077] FIG28 is a schematic block diagram of a vehicle according to an embodiment of the present disclosure.

[0078] Reference numerals:

[0079] Vehicle 2000, Seat 1000,

[0080] Seat armrest 1, posture adjustment component 2, seat armrest screen 3,

[0081] Armrest body 100, screen installation surface 110, storage slot 120, component to be installed 101,

[0082] Display screen 200, display surface 210, flip edge 211,

[0083] Bracket 300, arc-shaped plate section 310, second meshing teeth 311, insert block 312, damping member 320, mounting groove 321, limiting folding plate 330, flat plate section 340, limiting block 341, first shaft ear 350, second shaft hole 351, second connecting rod shaft 352,

[0084] Screw mechanism 360, screw rod 370, threaded section 371, connecting section 372, first nut 374, first connecting rod shaft 375, bearing 380, second nut 381, nut body 382, ​​receiving ring 383, notch 384, elastic member 385,

[0085] Link mechanism 390, link 391, first connecting plate 392, second connecting plate 393, first shaft hole 394, third shaft hole 395, fifth shaft hole 396, link shaft 397,

[0086] Cover 400,

[0087] Slide rail frame 500, arc-shaped guide cavity 510, first arc-shaped guide wall 511, second arc-shaped guide wall 512,

[0088] Housing 600, first limiting surface 601, second limiting surface 602, upper cover 610, lower cover 620, mounting cavity 630, mounting frame 640, first limiting rib 650, second limiting rib 660, driving mechanism 700,

[0089] Transmission mechanism 800, gear sleeve 810, first meshing teeth 811, fourth shaft hole 812, second shaft ear 813, gear shaft 820, groove 821, transmission rib 822, guide portion 823, ring plate 830, slot 831, fixing member 840, elastic member 850, gasket 860, transmission block 870, locking teeth 871, friction plate 880, axial limiting mechanism 801, clutch device 890,

[0090] Speed ​​reduction and torque increase mechanism 900 , primary worm 910 , primary gear 920 , secondary worm 930 , secondary gear 940 , transmission slot 941 , circuit board 950 , potentiometer 960 , detection gear 961 , fingerprint collection device 970 , and gesture collection device 980 . DETAILED DESCRIPTION

[0091] Embodiments of the present disclosure are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0092] In the description of the present disclosure, 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 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 disclosure and simplifying the description, and do not indicate or imply 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 a limitation to the present disclosure.

[0093] In the description of the present disclosure, "first feature" and "second feature" may include one or more of the features.

[0094] In the description of the present disclosure, “plurality” means two or more.

[0095] In the description of the present disclosure, a first feature being “on” or “under” a second feature may include that the first and second features are in direct contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0096] In the description of the present disclosure, “above”, “above” and “on” 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.

[0097] Hereinafter, a seat armrest 1 according to an embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0098] As shown in FIG. 1 to FIG. 10 , a chair armrest 1 according to an embodiment of the present disclosure includes an armrest body 100 , a posture adjustment assembly 2 and a display screen 200 .

[0099] The armrest body 100 has a screen mounting surface 110, which is provided with a storage slot 120. The posture adjustment assembly 2 is disposed on the armrest body 100. The display screen 200 has a display surface 210, which is mounted on the posture adjustment assembly 2. The posture adjustment assembly 2 drives the display screen 200 to flip between a stowed position and an extended position. In the stowed position, the display screen 200 is housed within the storage slot 120, with the display surface 210 flush with the screen mounting surface 110. In the extended position, at least a portion of the display screen 200 is located outside the storage slot 120, and the edge of the display surface 210 adjacent to the screen mounting surface 110 forms a flip edge 211, which is flush with the screen mounting surface 110.

[0100] The display screen 200 may have multiple extension positions, so that the display screen 200 can hover at different extension positions, and the angle of the extension position of the display screen 200 can be adjusted according to user needs.

[0101] For example, the screen mounting surface 110 can be the top surface of the armrest body 100. In this case, the flip axis of the display screen 200 can extend along the left-right direction of the vehicle, and the rear edge of the display screen 200 along the front-to-back direction of the vehicle forms the flip edge, allowing the display screen 200 to flip from front to back. Alternatively, the screen mounting surface 110 can be a side surface of the armrest body 100. In this case, the flip axis of the display screen 200 can extend along the front-to-back direction of the vehicle, and the upper edge of the display screen 200 along the top-to-bottom direction of the vehicle forms the flip edge, allowing the display screen 200 to flip from bottom to top. Of course, the flip axis and flip direction of the display screen 200 can also be adjusted according to actual needs.

[0102] According to the chair armrest 1 of the embodiment of the present disclosure, a screen mounting surface 110 is provided on the armrest main body 100, and the screen mounting surface 110 is provided with a storage groove 120, wherein the screen mounting surface 110 of the armrest main body 100 can be the upper side surface of the armrest main body 100, and the storage groove 120 can store the display screen 200, and the posture adjustment component 2 is provided on the armrest main body 100, and the display screen 200 has a display surface 210, and the display screen 200 is installed on the posture adjustment component 2, and the posture adjustment component 2 drives the display screen 200 to flip between the storage position and the extended position.

[0103] In this way, the display screen 200 can be switched between the storage position and the extended position. When the user needs to watch the display screen 200, the display screen 200 is flipped to the extended position through the posture adjustment component 2 to facilitate user viewing and improve the user viewing experience. When the user does not need to watch the display screen 200, the display screen 200 is flipped to the storage position through the posture adjustment component 2. This can reduce the space occupied by the display screen 200 to increase the space inside the vehicle. After the display screen 200 is stored in the storage slot 120, the probability of collision with the display screen 200 can be reduced when the display screen 200 is not in use, which is beneficial to protecting the display screen 200 and avoiding damage to the display screen 200.

[0104] It should be noted that the display screen 200 is not limited to being able to hover in the extended position, but can also hover at any position between the stowed position and the extended position. When the display screen 200 is in the extended position, the angle between the screen mounting surface 110 and the display surface 210 can be no less than 60° and no more than 90°. When the display screen 200 is in the stowed position, the angle between the screen mounting surface 110 and the display surface 210 can be 0°.

[0105] Furthermore, when the display screen 200 is in the stowed position, it is stored in the storage slot 120, with the display surface 210 flush with the screen mounting surface 110. This not only improves the storage slot 120's ability to store the display screen 200, but also prevents the display screen 200 from protruding from the screen mounting surface 110, further reducing the chance of collision with the display screen 200 and better protecting the display screen 200. Furthermore, the space occupied by the display screen 200 in the stowed position is minimized. Furthermore, the transition between the display screen 200 and the screen mounting surface 110 is smoother, avoiding a height difference between the two locations. This prevents dust from accumulating at the transition between the display screen 200 and the screen mounting surface 110, making the chair armrest 1 appear cleaner.

[0106] Furthermore, when the display screen 200 is in the extended position, at least a portion of the display screen 200 is positioned outside the storage slot 120, and the edge of the display surface 210 adjacent to the screen mounting surface 110 forms a flip edge 211, which is flush with the screen mounting surface 110. Thus, when the display screen 200 flips from the stored position to the extended position, the flip edge 211 can always remain flush with the screen mounting surface 110. That is, during the process of flipping the display screen 200 from the stored position to the extended position, the position of the flip edge 211 of the display screen 200 remains unchanged. This prevents the entire screen of the display screen 200 from moving forward or downward, improving the rotational stability of the display screen 200 and requiring less space for movement. Furthermore, when the display screen 200 is rotated to the extended position, it is more convenient for the user to view the display screen, thereby improving the viewing experience. Furthermore, the gap between the display screen 200 and the armrest body 100 does not change or changes very little, thereby preventing dust accumulation at the transition point. This improves the appearance of the armrest 1 while preventing hand pinching and providing a better user experience.

[0107] In this way, the chair armrest 1 according to the embodiment of the present disclosure can store and raise the display screen 200, and the space required for the movement of the display screen 200 is small, which has the advantages of small space occupation, easy viewing and flat appearance.

[0108] The following describes, with reference to the accompanying drawings, a posture adjustment assembly 2 for a display screen according to an embodiment of the present disclosure. The posture adjustment assembly 2 is installed on the component to be installed 101. The posture adjustment assembly 2 drives the display screen 200 to flip between a storage position and an extended position relative to the component to be installed 101. The posture adjustment assembly 2 includes a bracket 300. The bracket 300 is connected to the display screen 200. The bracket 300 includes an arc-shaped plate segment 310. The bracket 300 drives the display screen 200 to flip around the central axis of the arc-shaped plate segment 310.

[0109] The posture adjustment assembly 2 for a display screen according to the embodiment of the present disclosure can accommodate and raise the display screen 200 , and the space required for the movement of the display screen 200 is small, thus having the advantages of occupying a small space and being easy to view.

[0110] The following describes the seat armrest screen 3 according to an embodiment of the present disclosure with reference to the accompanying drawings. The seat armrest screen 3 includes a display screen 200 and a posture adjustment component 2 for the display screen according to the above embodiment of the present disclosure. The component 101 to be installed is the armrest body 100, and the posture adjustment component 2 is installed on the armrest body 100. The posture adjustment component 2 drives the display screen 200 to flip between the storage position and the extended position relative to the armrest body 100.

[0111] According to the seat armrest screen 3 of the embodiment of the present disclosure, the display screen 200 can be stored and raised by utilizing the posture adjustment component 2 for the display screen according to the above embodiment of the present disclosure, and the space required for the movement of the display screen 200 is small, which has the advantages of taking up little space and being easy to watch.

[0112] In some specific embodiments of the present disclosure, as shown in FIG. 1 , the flip axis of the display screen 200 coincides with the flip edge 211 of the display surface 210 .

[0113] Specifically, the display screen 200 can be fixed to the posture adjustment assembly 2 and driven to flip by the posture adjustment assembly 2. During the flipping process, the display screen 200 can flip around the flip edge 211 of the display surface 210, and the position of the flip edge 211 can remain unchanged. It is understood that the flip edge 211 of the display surface 210 is a side edge of the upper surface of the display screen 200. This arrangement can prevent the gap between the flip edge 211 and the screen mounting surface 110 from changing or changing in height during the flipping process of the display screen 200, thereby preventing the height of the display screen 200 from decreasing. By maintaining the flip edge 211 and the screen mounting surface 110 flush, the rotational stability of the display screen 200 can be improved.

[0114] In some specific embodiments of the present disclosure, as shown in FIG. 4 , FIG. 5 , FIG. 8 and FIG. 9 , the posture adjustment assembly 2 includes a bracket 300 .

[0115] The bracket 300 is connected to the display screen 200 and includes an arc-shaped plate segment 310 . The bracket 300 drives the display screen 200 to flip around the central axis of the arc-shaped plate segment 310 . The central axis of the arc-shaped plate segment 310 coincides with the flip edge 211 of the display surface 210 .

[0116] That is to say, the display screen 200 of the embodiment of the present disclosure does not need to rotate around a physical axis. Specifically, the display screen 200 can be fixedly connected to the bracket 300. When the bracket 300 rotates, it can drive the display screen 200 to rotate, and the rotation axis of the bracket 300 is set to coincide with the flip edge 211 of the display surface 210. In this way, when the bracket 300 rotates, it can drive the display screen 200 to rotate around the flip edge 211 of the display surface 210, and the position of the flip edge 211 will not change, thereby avoiding changes in the gap between the flip edge 211 and the screen mounting surface 110 of the seat armrest 1. This not only improves the dustproof and waterproof performance of the seat armrest 1, but also makes the connection between the display screen 200 and the screen mounting surface 110 more regular when in the extended position, and the appearance is more beautiful.

[0117] In addition, it can be understood that the bracket 300 moves in an arc shape during the rotation process. By setting the arc-shaped plate segment 310, the area swept by the arc-shaped plate segment 310 during rotation can be smaller. This not only reduces the volume of the bracket 300 and the space required for the bracket 300 during rotation, but also avoids positional interference between the bracket 300 and other components, making the rotation of the bracket 300 more convenient.

[0118] In some specific embodiments of the present disclosure, as shown in FIG8 , when the display screen 200 is in the storage position, the arc-shaped plate segment 310 is located inside the armrest body 100 .

[0119] Specifically, the bracket 300 is connected to the side of the display screen 200 facing away from the display surface 210. When the display screen 200 is in the storage position, the display screen 200 will cover the posture adjustment component 2, that is, the posture adjustment component 2 will be located in the armrest body 100, of course, the bracket 300 is also located in the armrest body 100. In this way, not only can the armrest body 100 be used to block the posture adjustment component 2, making the appearance more beautiful, but also the posture adjustment component 2 can be protected to prevent the user from accidentally colliding with the posture adjustment component 2, thereby preventing the posture adjustment component 2 from being damaged, and the user's riding experience is also better.

[0120] In some specific embodiments of the present disclosure, as shown in FIG. 1 to FIG. 4 , FIG. 8 and FIG. 9 , the chair armrest 1 further includes a cover plate 400 .

[0121] The cover plate 400 is installed on the display screen 200. When the display screen 200 is in the storage position, the cover plate 400 is located in the storage slot 120. When the display screen 200 is in the extended position, the cover plate 400 blocks the portion of the bracket 300 extending out of the storage slot 120.

[0122] Among them, the cover plate 400 can be fixedly installed on the display screen 200, that is, the cover plate 400 can be flipped together with the display screen 200, and the cover plate 400 is connected to the side of the display screen 200 facing away from the display surface 210, so that when the display screen 200 is in the storage position, the cover plate 400 can also be located in the storage groove 120, and then the display screen 200 can be used to cover the cover plate 400, and the cover plate 400 will not be exposed from the armrest body 100, so as to ensure the overall appearance of the seat armrest 1 is neat, and when the display screen 200 is in the extended position, the cover plate 400 can be rotated along with the display screen 200 to extend out of the storage groove 120, and the cover plate 400 can cover the part of the bracket 300 exposed in the storage groove 120, so that the user will not directly observe the bracket 300, the appearance is more beautiful, and the user can be prevented from touching the bracket 300, and the bracket 300 can be prevented from pinching the hand when rotating, which is safer.

[0123] In addition, the cover plate 400 may also be constructed in an arc shape that is compatible with the arc-shaped plate section 310 of the bracket 300 , so that the space occupied by the cover plate 400 may be smaller, making it easier to arrange.

[0124] In some specific embodiments of the present disclosure, as shown in FIG. 4 and FIG. 6 to FIG. 9 , the posture adjustment assembly 2 further includes a slide rail frame 500 .

[0125] The rail frame 500 is fixed relative to the armrest body 100. The rail frame 500 is configured with a curved guide cavity 510. The curved plate segment 310 of the bracket 300 slidably engages with the curved guide cavity 510 to restrict the bracket 300 from rotating about the central axis of the curved plate segment 310. The central axis of the curved plate segment 310 coincides with the flip edge 211 of the display surface 210. Therefore, the curved guide cavity 510 of the rail frame 500 restricts the bracket 300 from rotating about the curved plate segment 310, that is, about the flip edge 211 of the display surface 210.

[0126] That is to say, the position of the slide frame 500 remains unchanged during the flipping process of the display screen 200, and the arc-shaped guide cavity 510 of the slide frame 500 can guide the rotation of the bracket 300. At the same time, the slide frame 500 can also play the role of fixing and supporting the bracket 300, so that the overall structure of the posture adjustment component 2 is more stable, the rotation of the bracket 300 is smoother, and the stability of the rotation of the display screen 200 is further improved. The flipping edge 211 of the display surface 210 will not be offset, and the display screen 200 will have a better fit with the screen mounting surface 110 during the flipping process.

[0127] Furthermore, as shown in FIG5 , a damping member 320 is provided between the arcuate plate segment 310 and the inner wall of the arcuate guide cavity 510. The damping member 320 may be a damping sleeve, a spring, or a damper, and is used to apply a damping force to the rotation of the bracket 300. The addition of the damping member 320 increases the damping force between the bracket 300 and the arcuate guide cavity 510, making the rotation of the bracket 300 smoother and preventing rapid rotation of the bracket 300. This, in turn, allows the display screen 200 to rotate more smoothly, making it easier for the user to adjust the rotation position of the display screen 200. The damping member 320 also absorbs instantaneous impacts on the display screen 200 or the bracket 300, thereby preventing breakage or damage to the bracket 300. Furthermore, the damping member 320 eliminates the gap between the bracket 300 and the slide rail 500, as well as the gap between the teeth of the posture adjustment assembly 2, thereby preventing noise and vibration generated by collision between the bracket 300 and the slide rail 500.

[0128] Furthermore, as shown in FIG5 , damping members 320 are provided on both axial sides of the arcuate plate segment 310. This provides damping force between both axial sides of the arcuate plate segment 310 and the arcuate guide cavity 510, thereby evenly distributing the damping force between the arcuate plate segment 310 and the inner wall of the arcuate guide cavity 510. This further improves the rotational stability of the bracket 300, making the display screen 200 more stable and reliable when flipping, preventing shaking of the display screen 200 and providing a better viewing experience for the user.

[0129] For example, as shown in Figures 5 and 6, the damping member 320 can be a damping sleeve, and a mounting groove 321 can be provided on the side of the damping member 320 facing the arc-shaped plate segment 310, and plug blocks 312 are provided on both axial sides of the arc-shaped plate segment 310. The plug blocks 312 can be inserted into the mounting groove 321 of the damping member 320, thereby achieving the fixation of the damping member 320 and the arc-shaped plate segment 310, wherein the thickness of the damping member 320 can be greater than the thickness of the arc-shaped plate segment 310, and the thickness of the plug blocks 312 can be less than the thickness of the rest of the arc-shaped plate segment 310, and the arc-shaped guide cavity 510 has a first arc-shaped guide wall 511 and a second arc-shaped guide wall 512, which are respectively arranged on both sides of the arc-shaped plate segment 310 in the thickness direction of the arc-shaped plate segment 310, and each damping member 320 is in contact with and cooperates with the first arc-shaped guide wall 511 and the second arc-shaped guide wall 512.

[0130] This facilitates the assembly of the arc-shaped plate segment 310 and the damping member 320. Moreover, after the damping member 320 contacts the inner wall of the arc-shaped guide cavity 510, the arc-shaped plate segment 310 will not directly contact the inner wall of the arc-shaped guide cavity 510, thereby avoiding wear between the arc-shaped plate segment 310 and the arc-shaped guide cavity 510. At the same time, the friction between the bracket 300 and the slide rail bracket 500 can be reduced to facilitate the rotation of the bracket 300.

[0131] Moreover, the arc-shaped guide cavity 510 can guide the two damping members 320 at the same time, reducing the assembly error between the two damping members 320, which is beneficial to reducing the transmission error between the internal gears of the posture adjustment assembly 2, such as the transmission error between the first meshing tooth 811 and the second meshing tooth 311 described below.

[0132] In some specific embodiments of the present disclosure, as shown in FIG. 4 , FIG. 5 , and FIG. 8 - FIG. 11 , the posture adjustment assembly 2 further includes a housing 600 , a driving mechanism 700 , and a transmission mechanism 800 .

[0133] The shell 600 is installed on the armrest body 100, the driving mechanism 700 is installed on the shell 600, and the transmission mechanism 800 is respectively connected to the driving mechanism 700 and the bracket 300. The driving mechanism 700 drives the bracket 300 to rotate around the central axis of the arc-shaped plate segment 310 through the transmission mechanism 800 to drive the display screen 200 to flip between the storage position and the extended position.

[0134] Among them, the driving mechanism 700 can be a motor, and the posture adjustment component 2 can automatically drive the bracket 300 to rotate through the driving mechanism 700, thereby realizing automatic flipping of the display screen 200. Compared with manual flipping of the display screen 200, the operation is more convenient and quick, and the user experience is better.

[0135] In addition, all components of the posture adjustment assembly 2 can be installed in the shell 600, such as the driving mechanism 700, the transmission mechanism 800 and the bracket 300. The bracket 300 can be located in the shell 600 when the display screen 200 is in the storage position, and can be extended from the shell 600 when the display screen 200 is in the extended position.

[0136] For example, the posture adjustment component 2 may have a power-off reset function. When the vehicle loses power, the transmission mechanism 800 will drive the display screen 200 to automatically return to the horizontal state of the storage position.

[0137] In some specific embodiments of the present disclosure, as shown in FIG. 5 - FIG. 6 and FIG. 8 - FIG. 10 , the transmission mechanism 800 includes a gear sleeve 810 .

[0138] The gear sleeve 810 is in transmission connection with the driving mechanism 700 . The outer circumference of the gear sleeve 810 is provided with first meshing teeth 811 . The outer circumference of the arc-shaped plate segment 310 is provided with second meshing teeth 311 . The first meshing teeth 811 and the second meshing teeth 311 are meshed.

[0139] In this way, the posture adjustment component 2 can transmit power to the gear sleeve 810 through the driving mechanism 700 to drive the gear sleeve 810 to rotate, and then transmit power to the arc plate segment 310 through the engagement of the first meshing tooth 811 and the second meshing tooth 311, that is, it can drive the bracket 300 to rotate, so as to realize the flipping, extension and storage of the display screen 200.

[0140] Furthermore, by meshing the first meshing teeth 811 on the outer circumference of the tooth sleeve 810 and the second meshing teeth 311 on the outer circumference of the arc-shaped plate segment 310, power is transmitted. This not only ensures reliable power transmission, but also enables the bracket 300 to stop rotating at any angle. In this way, the display screen 200 can have an extreme extension position, and the display screen 200 can hover at any position between the extreme extension position and the storage position. Specifically, when the display screen 200 flips to an angle, the user can control the drive mechanism 700 to stop running. At this time, the drive mechanism 700 remains stationary, and the position of the tooth sleeve 810 also remains stationary. The tooth sleeve 810 can mesh with the first meshing teeth 811 and the second meshing teeth 311, thereby fixing the position of the arc-shaped plate segment 310. The position of the bracket 300 remains unchanged, thereby fixing the display screen 200. The user can adjust the display screen 200 to hover at multiple angles according to their needs, providing a better user experience.

[0141] In some specific embodiments of the present disclosure, as shown in FIG. 5 and FIG. 10 , the transmission mechanism 800 further includes a gear shaft 820 .

[0142] The gear sleeve 810 is connected to the driving mechanism 700 through the gear shaft 820. The gear sleeve 810 is sleeved on the gear shaft 820 and rotates synchronously with the gear shaft 820. In this way, the driving mechanism 700 can transmit power to the gear sleeve 810 through the gear shaft 820, and then transmit power to the bracket 300 through the gear sleeve 810, thereby driving the display screen 200 to flip.

[0143] In some specific embodiments of the present disclosure, the transmission mechanism 800 further includes an axial limiting mechanism 801 .

[0144] The axial limiting mechanism 801 is provided on the gear shaft 820 and cooperates with the gear sleeve 810. The axial limiting mechanism 801 fixes the position of the gear sleeve 810 in the axial direction of the gear shaft 820. In this way, the axial limiting mechanism 801 can be used to axially limit the gear sleeve 810 in the axial direction of the gear shaft 820, so that the relative position of the gear sleeve 810 and the gear shaft 820 in the axial direction of the gear shaft 820 is fixed, and the gear sleeve 810 will not wobble, which is conducive to more stable power transmission between the gear sleeve 810 and the bracket 300.

[0145] Specifically, the axial limiting mechanism 801 may include a ring plate 830 and a fixing member 840, the ring plate 830 is arranged on the outer peripheral surface of the gear shaft 820, the fixing member 840 is installed on the gear shaft 820, and the gear sleeve 810 is limited between the ring plate 830 and the fixing member 840 in the axial direction of the gear shaft 820.

[0146] In other words, the ring piece 830 and the fixing piece 840 are respectively located at the axial ends of the gear sleeve 810, so that the ring piece 830 and the fixing piece 840 can be used to axially limit the gear sleeve 810, so that the relative positions of the gear sleeve 810 and the gear shaft 820 in the axial direction of the gear shaft 820 are fixed, and the gear sleeve 810 will not shake in position, which is conducive to more stable power transmission between the gear sleeve 810 and the bracket 300.

[0147] Furthermore, as shown in FIG. 5 , the transmission mechanism 800 further includes an elastic member 850 . The elastic member 850 is sleeved on the gear shaft 820 and abuts between the gear sleeve 810 and the fixing member 840 .

[0148] For example, the elastic member 850 can be a spring, which is arranged on the gear shaft 820 and is located between the gear sleeve 810 and the fixing member 840. Moreover, after the transmission mechanism 800 is assembled in place, the elastic member 850 can be in a compressed state, so that the fixing member 840 can press the gear sleeve 810 through the elastic member 850, and then the gear sleeve 810 can be pressed between the fixing member 840 and the ring piece 830, further improving the stability of the position fixation of the gear sleeve 810, making it less likely for the gear sleeve 810 to shake along the axial direction of the gear shaft 820, and the cooperation between the gear sleeve 810 and the bracket 300 is more stable. The transmission mechanism 800 can stably transmit power to the bracket 300, thereby driving the display screen 200 to flip stably.

[0149] In some specific embodiments of the present disclosure, as shown in Figure 5, the transmission mechanism 800 also includes a gasket 860, which is sleeved on the gear shaft 820 and located between the elastic member 850 and the gear sleeve 810. In this way, the elastic member 850 can be stopped against the gear sleeve 810 through the gasket 860. By adding the gasket 860, it is convenient to stop against the elastic member 850. The abutment between the elastic member 850 and the gasket 860 is more stable, and the contact area between the gasket 860 and the gear sleeve 810 is larger, so that the elastic member 850 can reliably press the gear sleeve 810 against the ring piece 830, further improving the axial fixing effect of the gear sleeve 810.

[0150] In some specific embodiments of the present disclosure, as shown in FIG. 5 , the transmission mechanism 800 further includes a transmission block 870 and a friction plate 880 .

[0151] The transmission block 870 is sleeved on the gear shaft 820. The transmission block 870 is located between the gear sleeve 810 and the ring plate 830 and rotates synchronously with the gear shaft 820. The friction plate 880 is located between the transmission block 870 and the gear sleeve 810. The transmission block 870 transmits the rotation of the gear shaft 820 to the gear sleeve 810 through the friction plate 880.

[0152] It should be noted that the friction force between the friction plate 880 and the transmission block 870, as well as the friction force between the friction plate 880 and the gear sleeve 810 are both greater than the driving force required for flipping the display screen 200. In this way, when the display screen 200 is actively driven to flip through the driving mechanism 700, the transmission block 870 can transmit power to the gear sleeve 810 through the friction plate 880, and then drive the gear sleeve 810 to rotate, so as to realize the flipping of the display screen 200.

[0153] When the display screen 200 tends to flip under the action of external force, for example, when the user manually turns the display screen 200 or accidentally collides with the display screen 200, if the external force is greater than the friction between the friction plate 880 and the transmission block 870, or the external force is greater than the friction between the friction plate 880 and the gear sleeve 810, then relative rotation will occur between the gear sleeve 810 and the friction plate 880 or between the friction plate 880 and the transmission block 870, thereby causing the display screen 200 to be pushed to flip by the external force. This arrangement can prevent the display screen 200 from breaking or cracking due to excessive external force after the transmission mechanism 800 locks the display screen 200.

[0154] In some specific embodiments of the present disclosure, as shown in Figure 6, one of the ring piece 830 and the transmission block 870 is provided with a slot 831 and the other is provided with a tooth 871, which is inserted into the slot 831 to enable the transmission block 870 to rotate synchronously with the gear shaft 820.

[0155] For example, the ring piece 830 can be provided with a slot 831 and the transmission block 870 can be provided with a tooth 871. In this way, when the ring piece 830 rotates synchronously with the gear shaft 820, the power can be transmitted to the transmission block 870 through the cooperation of the slot 831 and the tooth 871, so that the transmission block 870 can rotate synchronously with the gear shaft 820. Moreover, through the transmission cooperation of the slot 831 and the tooth 871, the power transmission between the ring piece 830 and the transmission block 870 is more stable and reliable.

[0156] Furthermore, as shown in Figures 5 and 6, multiple slots 831 are spaced apart along the circumference of the ring plate 830, and multiple teeth 871 are spaced apart along the circumference of the transmission block 870, with the multiple teeth 871 correspondingly inserted into the multiple slots 831. Thus, when the ring plate 830 transmits power to the transmission block 870, the circumferential force on the ring plate 830 and the transmission block 870 is more uniform, making the power transmission between the ring plate 830 and the transmission block 870 more stable and reliable, and more effectively preventing the power transmission failure between the ring plate 830 and the transmission block 870. For example, if one of the multiple teeth 871 and the multiple slots 831 is damaged and fails, the cooperation of the remaining multiple teeth 871 and the multiple slots 831 can still ensure power transmission between the ring plate 830 and the transmission block 870.

[0157] In other specific embodiments of the present disclosure, as shown in FIG7 and with reference to FIG5 , the transmission mechanism 800 further includes a transmission block 870 and a clutch device 890. It should be noted that in this embodiment, the transmission mechanism 800 does not include a friction plate 880. In other words, the above-described embodiment in which the transmission mechanism 800 includes the transmission block 870 and the friction plate 880 and the embodiment in which the transmission mechanism 800 includes the transmission block 870 and the clutch device 890 are parallel embodiments.

[0158] The transmission block 870 is sleeved on the gear shaft 820. The transmission block 870 is located between the gear sleeve 810 and the ring plate 830 and rotates synchronously with the gear shaft 820. The clutch device 890 is located between the transmission block 870 and the gear sleeve 810. The clutch device 890 controls whether power is transmitted between the transmission block 870 and the gear sleeve 810.

[0159] Specifically, when the clutch device 890 is engaged, the clutch device 890 can transmit power, that is, the transmission block 870 can transmit power to the gear sleeve 810 through the clutch device 890, and then drive the gear sleeve 810 to rotate, so as to realize the driving mechanism 700 driving the display screen 200 to flip; when the clutch device 890 is disengaged, the power transmission of the clutch device 890 is interrupted, that is, no power is transmitted between the transmission block 870 and the gear sleeve 810. When the display screen 200 is manually flipped, the rotational force of the display screen 200 will not be transmitted to the transmission block 870 through the clutch device 890, thereby protecting the driving mechanism 700.

[0160] In some specific embodiments of the present disclosure, as shown in Figure 5, the outer peripheral surface of the gear shaft 820 is provided with a groove 821, and the fixing member 840 is a retaining spring, which is clamped in the groove 821. Thus, the groove 821 can pre-position the position of the retaining spring, and after the retaining spring is clamped in the groove 821, the axial direction of the gear sleeve 810 can be limited.

[0161] In some specific embodiments of the present disclosure, the driving mechanism 700 is a motor, the posture adjustment assembly 2 also includes a deceleration and torque-increasing mechanism 900, the gear shaft 820 is transmission-connected to the driving mechanism 700 through the deceleration and torque-increasing mechanism 900, and the deceleration and torque-increasing mechanism 900 includes a primary worm 910, a primary gear 920, a secondary worm 930 and a secondary gear 940.

[0162] The first-stage worm 910 is sleeved on the motor shaft of the motor and is driven to rotate by the motor shaft. The first-stage gear 920 is installed on the housing 600 and engages with the first-stage worm 910. The second-stage worm 930 is installed on the housing 600 and rotates synchronously with the first-stage gear 920. The second-stage gear 940 is sleeved on the gear shaft 820 and rotates synchronously with the gear shaft 820. The second-stage gear 940 engages with the second-stage worm 930.

[0163] In this way, when the user needs to rotate the display screen 200, the driving mechanism 700 can be started, and the driving mechanism 700 can drive the first-stage worm 910 to rotate, and the power can be transmitted to the transmission mechanism 800 in sequence through the first-stage worm 910, the first-stage gear 920, the second-stage worm 930 and the second-stage gear 940, and then the display screen 200 is driven to flip through the transmission mechanism 800. In addition, through the gear teeth coordination of the deceleration and torque-increasing mechanism 900, the rotation speed transmitted from the driving mechanism 700 to the transmission mechanism 800 can be effectively reduced, and then the torque transmitted from the driving mechanism 700 to the transmission mechanism 800 can be increased, so that the flipping of the display screen 200 is smoother.

[0164] 5 , the central axis of the primary worm 910 coincides with the central axis of the motor shaft, the central axis of the primary gear 920 coincides with the central axis of the secondary worm 930 and is perpendicular to the central axis of the primary worm 910, and the central axis of the secondary gear 940 coincides with the central axis of the gear shaft 820 and is perpendicular to the secondary worm 930. In this way, the structural layout of the drive mechanism 700, the primary worm 910, the primary gear 920, the secondary worm 930, and the secondary gear 940 is more compact, making the drive mechanism 700, the primary worm 910, the primary gear 920, the secondary worm 930, and the secondary gear 940 occupy less space and easier to arrange.

[0165] In some specific embodiments of the present disclosure, as shown in Figures 5 and 6, one of the outer circumferential surface of the gear shaft 820 and the inner circumferential surface of the secondary gear 940 is provided with a transmission rib 822 and the other is provided with a transmission groove 941, and the transmission rib 822 is inserted into the transmission groove 941 so that the secondary gear 940 rotates synchronously with the gear shaft 820.

[0166] For example, the outer circumference of the gear shaft 820 can be provided with a transmission rib 822 and the inner circumference of the secondary gear 940 can be provided with a transmission groove 941. In this way, when the driving mechanism 700 is operating, the secondary gear 940 can transmit power to the gear shaft 820 through the cooperation of the transmission groove 941 and the transmission rib 822, so that the gear shaft 820 can rotate synchronously with the secondary gear 940. Moreover, through the transmission cooperation of the transmission groove 941 and the transmission rib 822, the power transmission between the secondary gear 940 and the gear shaft 820 is more stable and reliable.

[0167] Furthermore, as shown in FIG5 and FIG6, a plurality of transmission ribs 822 are arranged at intervals along the circumference of the gear shaft 820, a plurality of transmission grooves 941 are arranged at intervals along the circumference of the secondary gear 940, and the plurality of transmission ribs 822 are inserted into the plurality of transmission grooves 941 in a one-to-one correspondence.

[0168] In this way, when the secondary gear 940 transmits power to the gear shaft 820, the circumferential force on the secondary gear 940 and the gear shaft 820 is more uniform, so that the power transmission between the secondary gear 940 and the gear shaft 820 is more stable and reliable, and the power transmission failure between the secondary gear 940 and the gear shaft 820 is more effectively avoided. For example, when one of the multiple transmission ribs 822 and the multiple transmission grooves 941 is damaged and fails, the cooperation of the remaining multiple transmission ribs 822 and the multiple transmission grooves 941 can still ensure the power transmission between the secondary gear 940 and the gear shaft 820.

[0169] In some specific embodiments of the present disclosure, as shown in Figure 6, the transmission rib 822 is provided on the outer peripheral surface of the gear shaft 820, and the end of the transmission rib 822 facing away from the gear sleeve 810 has a guide portion 823, and the height of the guide portion 823 gradually decreases in the direction away from the gear sleeve 810. In this way, when assembling the gear shaft 820 and the secondary gear 940, the guide portion 823 can guide the assembly of the transmission rib 822 and the transmission groove 941, which is conducive to simplifying the assembly steps of the gear shaft 820 and the secondary gear 940 and making the assembly more convenient.

[0170] In some specific embodiments of the present disclosure, as shown in Figures 5, 8 and 9, the shell 600 is constructed with a first limiting surface 601 and a second limiting surface 602. When the display screen 200 is flipped from the extended position to the storage position, the bracket 300 stops at the first limiting surface 601. When the display screen 200 is flipped from the storage position to the extended position, the bracket 300 stops at the second limiting surface 602.

[0171] In this way, it can be determined that the flipping range of the display screen 200 is from the storage position to the extended position, thereby preventing the display screen 200 from being flipped too much and being damaged.

[0172] Furthermore, as shown in Figures 5, 8 and 9, the bracket 300 also includes a limiting folding plate 330, which is connected to the side of the arc-shaped plate segment 310 away from the display screen 200 in the arc length direction. When the display screen 200 is flipped from the storage position to the extended position, the limiting folding plate 330 stops at the second limiting surface 602, so that the positioning is more reliable.

[0173] In some specific embodiments of the present disclosure, as shown in FIG. 10 , the posture adjustment assembly 2 further includes a circuit board 950 and a potentiometer 960 .

[0174] The circuit board 950 is installed on the housing 600 and connected to the driving mechanism 700. The potentiometer 960 is installed on the circuit board 950. The potentiometer 960 has a detection gear 961. The detection gear 961 engages with the first meshing tooth 811 to detect the rotation angle information of the gear sleeve 810 and save the rotation angle information on the circuit board 950.

[0175] Thus, the rotation angle of the bracket 300 can be detected by detecting the gear 961. When the user adjusts the rotation angle of the display screen 200 and saves the angle of the display screen 200, the flip angle of the display screen 200 will correspond to a rotation angle of the bracket 300. At this time, the rotation angle of the bracket 300 can be saved in the potentiometer 960. When the vehicle is started again or the display screen 200 is flipped from the storage position to the extended position again, the bracket 300 can be flipped to the position corresponding to the rotation angle saved by the potentiometer 960, so that the display screen 200 can be automatically flipped to the position corresponding to the flip angle saved by the user. It is more convenient for users to use and there is no need to adjust the flip angle of the display screen 200 every time.

[0176] In some specific embodiments of the present disclosure, as shown in FIG. 4 , FIG. 8 and FIG. 9 , the housing 600 includes an upper cover 610 , a lower cover 620 , a mounting bracket 640 and a slide rail bracket 500 .

[0177] The upper cover 610 and the lower cover 620 are connected to each other and jointly define a mounting cavity 630. The mounting frame 640 and the circuit board 950 are installed on the lower cover 620 and are located in the mounting cavity 630. The driving mechanism 700 and the transmission mechanism 800 are installed on the mounting frame 640. The slide rail frame 500 is installed on the mounting frame 640. The slide rail frame 500 and the lower cover 620 are arranged on opposite sides of the mounting frame 640. The arc-shaped plate segment 310 cooperates with the slide rail frame 500 to limit the rotation of the bracket 300 around the central axis of the arc-shaped plate segment 310.

[0178] In this way, the upper cover 610 and the lower cover 620 can cover the components such as the drive mechanism 700, the transmission mechanism 800, the mounting bracket 640, and the slide rail frame 500, thereby making the appearance of the posture adjustment assembly 2 more beautiful and preventing the user from directly touching the drive mechanism 700 or the transmission mechanism 800, thereby improving safety. At the same time, the posture adjustment assembly 2 can also use the mounting bracket 640 to fix the drive mechanism 700, the transmission mechanism 800, the slide rail frame 500 and other components, thereby making the connection and fixation of the various components of the posture adjustment assembly 2 more stable. In this way, multiple parts are fixed by a single mounting bracket 640, which reduces assembly errors, has a better effect on controlling the center distance of the gears, and can appropriately reduce the noise of the gear transmission.

[0179] In some specific embodiments of the present disclosure, as shown in FIG. 8 and FIG. 9 , the chair armrest 1 further includes a gesture acquisition device 980 .

[0180] The gesture acquisition device 980 is connected to the posture adjustment component 2 , and the posture adjustment component 2 drives the display screen 200 to flip between the storage position and the extended position according to the gesture information collected by the gesture acquisition device 980 .

[0181] For example, the gesture acquisition device 980 can be an infrared sensing module. In this way, the gesture acquisition device 980 can collect the user's gesture information. The user can rely on different gesture information to control the retraction and extension of the posture adjustment component 2, and then control the display screen 200 to be retracted, extended or flipped to different angles. For example, when the user raises his hand, the display screen 200 can rotate upward following the gesture. When the hand drops, the display screen 200 can rotate downward following the gesture, further simplifying the user's operation. The user does not need to switch the position of the display screen 200 by touching the display screen 200 or pressing a button. The operation is more convenient and quick, which is conducive to improving the user's operating experience.

[0182] In some specific embodiments of the present disclosure, as shown in Figures 2 and 3, 8 and 9, the seat armrest 1 further includes a fingerprint collection device 970. The fingerprint collection device 970 can be a touch screen.

[0183] For example, the fingerprint collection device 970 can be exposed from the armrest body 100 to facilitate the collection of user fingerprint information. The fingerprint collection device 970 is connected to the posture adjustment component 2. The posture adjustment component 2 drives the display screen 200 to flip between the storage position and the extended position according to the fingerprint information collected by the fingerprint collection device 970.

[0184] Specifically, when different users save the information of the flip angle of the display screen 200, they can enter the fingerprint through the fingerprint collection device 970. When the user uses the display screen 200 next time, by pressing the finger on the fingerprint collection device 970, the fingerprint collection device 970 can control the posture adjustment component 2 to drive the display screen 200 to flip to the position corresponding to the fingerprint information according to the fingerprint information. That is to say, the display screen 200 can have multiple memory positions, and the multiple memory positions correspond to different fingerprint information respectively. When different users use the display screen 200, the display screen 200 can flip to the flip angle corresponding to the fingerprint information of the user, further improving the user experience.

[0185] Of course, the same user can also enter multiple fingerprints, and the multiple fingerprints can correspond to different flip angles of the display screen 200. When the user presses the fingerprint collection device 970 with different fingers, the fingerprint collection device 970 can control the operation of the posture adjustment component 2 according to the collected fingerprint information to drive the display screen 200 to flip to the position corresponding to the fingerprint of the finger. In this way, the same user can also save multiple flip angles of the display screen 200, which more fully meets the usage needs of different users.

[0186] The following briefly describes the steps of the posture adjustment component 2 driving the display screen 200 to flip:

[0187] First, the user activates the driving mechanism 700, which drives the primary worm 910 to rotate. The primary worm 910 transmits power to the primary gear 920, the secondary worm 930, and the secondary gear 940 in sequence, causing the secondary gear 940 to rotate.

[0188] Then, the secondary gear 940 transmits power to the gear shaft 820 and drives the gear shaft 820 to rotate synchronously, and the ring piece 830 rotates synchronously with the gear shaft 820;

[0189] Finally, the ring plate 830 drives the gear sleeve 810 to rotate through the friction plate 880. The gear sleeve 810 engages with the second meshing teeth 311 of the bracket 300 through the first meshing teeth 811, thereby driving the bracket 300 to rotate. The display screen 200 rotates with the bracket 300, thereby realizing the flipping of the display screen 200.

[0190] The following is a brief description of the assembly steps of the posture adjustment assembly 2 in this embodiment:

[0191] First, connect the drive mechanism 700 and the mounting bracket 640 and secure them with two screws;

[0192] Then, after the secondary gear 940 is sleeved onto the gear shaft 820, the transmission block 870, friction plate 880, gear sleeve 810, gasket 860, and elastic member 850 are sequentially sleeved onto the gear shaft 820, and the fixing member 840 is snapped into the groove 821 of the gear shaft 820 to form a transmission assembly. The assembled transmission assembly is then fixed to the mounting bracket 640.

[0193] Next, fix the lower cover 620, circuit board 950, primary gear 920 and secondary gear 940 to the mounting bracket 640 respectively;

[0194] Then, two damping sleeves are respectively placed on opposite axial sides of the bracket 300, installed in the slide rail frame 500, and then fixed to the mounting frame 640 with screws;

[0195] Finally, the upper cover 610 and the lower cover 620 are fixed, and then the bracket 300 and the cover plate 400 are connected to the display screen 200 in sequence.

[0196] A seat armrest 1 according to another embodiment of the present disclosure will be described below with reference to the accompanying drawings.

[0197] As shown in FIG. 12 to FIG. 20 , the chair armrest 1 according to an embodiment of the present disclosure includes an armrest body 100 , a posture adjustment assembly 2 and a display screen 200 .

[0198] The armrest body 100 has a screen mounting surface 110, which is provided with a receiving slot 120. A posture adjustment assembly 2 is provided on the armrest body 100. The posture adjustment assembly 2 includes a screw mechanism 360 and a connecting rod mechanism 390. The connecting rod mechanism 390 is rotatably connected to the screw mechanism 360. The display screen 200 has a display surface 210. The display screen 200 is mounted on the connecting rod mechanism 390. The screw mechanism 360 drives the connecting rod mechanism 390 along its axial direction to cause the display screen 200 to flip between a stowed position and an extended position. In the stowed position, the display screen 200 is stored in the receiving slot 120, and the display surface 210 is flush with the screen mounting surface 110. In the extended position, at least a portion of the display screen 200 is located outside the receiving slot 120. The edge of the display surface 210 adjacent to the screen mounting surface 110 forms a flip edge 211, which is flush with the screen mounting surface 110.

[0199] The display screen 200 may have multiple extension positions, so that the display screen 200 can hover at different extension positions, and the angle of the extension position of the display screen 200 can be adjusted according to different user needs.

[0200] For example, the screen mounting surface 110 can be the top surface of the armrest body 100. In this case, the flip axis of the display screen 200 can extend along the left-right direction of the vehicle, and the rear edge of the display screen 200 along the front-to-back direction of the vehicle forms the flip edge 211, allowing the display screen 200 to flip from front to back. Alternatively, the screen mounting surface 110 can be a side surface of the armrest body 100. In this case, the flip axis of the display screen 200 can extend along the top-to-bottom direction of the vehicle, and the upper edge of the display screen 200 along the top-to-bottom direction of the vehicle forms the flip edge 211, allowing the display screen 200 to flip from bottom to top. Of course, the flip axis and flip direction of the display screen 200 can also be adjusted according to actual needs.

[0201] According to the chair armrest 1 of the embodiment of the present invention, a screen mounting surface 110 is provided on the armrest body 100, and the screen mounting surface 110 is provided with a storage groove 120, wherein the screen mounting surface 110 of the armrest body 100 can be the upper side surface of the armrest body 100, and the storage groove 120 can store the display screen 200, and the posture adjustment component 2 is provided on the armrest body 100, and the posture adjustment component 2 includes a screw mechanism 360 and a connecting rod mechanism 390, and the connecting rod mechanism 390 is rotatably connected to the screw mechanism 360, and the display screen 200 has a display surface 210, and the display screen 200 is installed on the connecting rod mechanism 390, and the screw mechanism 360 drives the connecting rod mechanism 390 to move along its axial direction to drive the display screen 200 to flip between the storage position and the extended position.

[0202] In this way, the display screen 200 can be switched between the storage position and the extended position. When the user needs to watch the display screen 200, the display screen 200 is flipped to the extended position through the posture adjustment component 2 to facilitate user viewing and improve the user viewing experience. When the user does not need to watch the display screen 200, the display screen 200 is flipped to the storage position through the posture adjustment component 2. This can reduce the space occupied by the display screen 200 to increase the space inside the vehicle. After the display screen 200 is stored in the storage slot 120, the probability of colliding with the display screen 200 when not in use can be reduced, which is beneficial to protecting the display screen 200 and avoiding damage to the display screen 200.

[0203] Moreover, the display screen 200 is driven to flip by the cooperation of the lead screw mechanism 360 and the connecting rod mechanism 390, and the transmission is more stable. The lead screw mechanism 360 and the connecting rod mechanism 390 can occupy a smaller space, which facilitates the installation of the posture adjustment component 2 in the seat armrest 1. The overall volume of the seat armrest 1 will not increase or the increase ratio is small, which is convenient for layout.

[0204] It should be noted that the display screen 200 is not only capable of hovering in the extended position, but can also hover at any position between the storage position and the extended position. When the display screen 200 is in the extended position, the angle between the screen mounting surface 110 and the display surface 210 can be no less than 60° and no more than 90°. When the display screen 200 is in the storage position, the angle between the screen mounting surface 110 and the display surface 210 can be 0°.

[0205] In addition, when the display screen 200 is in the storage position, it is stored in the storage groove 120, and the display surface 210 is flush with the screen mounting surface 110. In this way, not only can the storage effect of the storage groove 120 on the display screen 200 be improved, the display screen 200 will not protrude from the screen mounting surface 110, further reducing the chance of collision with the display screen 200, better protecting the display screen 200, and minimizing the space occupied by the display screen 200 in the storage position. Moreover, the transition between the display screen 200 and the screen mounting surface 110 will be smoother, avoiding the height difference between the transition between the display screen 200 and the screen mounting surface 110, thereby avoiding the accumulation of dust at the transition between the display screen 200 and the screen mounting surface 110, making the appearance of the seat armrest 1 more tidy.

[0206] Furthermore, when the display screen 200 is in the extended position, at least a portion of the display screen 200 is positioned outside the storage slot 120, and the edge of the display surface 210 adjacent to the screen mounting surface 110 forms a flip edge 211, which is flush with the screen mounting surface 110. Thus, when the display screen 200 flips from the stored position to the extended position, the flip edge 211 can always remain flush with the screen mounting surface 110. That is, during the process of flipping the display screen 200 from the stored position to the extended position, the position of the flip edge 211 of the display screen 200 remains unchanged, thus preventing the entire screen of the display screen 200 from moving forward or downward. This improves the rotational stability of the display screen 200, requires less space for movement, and makes it easier for users to view the display screen when it is rotated to the extended position, thereby enhancing the viewing experience. Furthermore, the gap between the display screen 200 and the armrest body 100 does not change or changes very little, thereby preventing dust accumulation at the transition point. This not only makes the chair armrest 1 look cleaner, but also prevents hand pinching and provides a better user experience.

[0207] In this way, the chair armrest 1 according to the embodiment of the present disclosure can not only store and raise the display screen 200, but also requires less space for the movement of the display screen 200, and has the advantages of small space occupation, easy viewing and flat appearance.

[0208] In some specific embodiments of the present disclosure, as shown in FIG. 13 and FIG. 14 , the axial direction of the lead screw mechanism 360 is perpendicular to the flip axis of the display screen 200 .

[0209] Specifically, the connecting rod mechanism 390 is in transmission connection with the lead screw mechanism 360, and the connecting rod mechanism 390 can move axially along the lead screw mechanism 360. When the connecting rod mechanism 390 moves toward one axial end of the lead screw mechanism 360, the connecting rod mechanism 390 can push one end of the display screen 200 upward, thereby causing the display screen 200 to flip from the storage position to the extended position. When the connecting rod mechanism 390 moves toward the other axial end of the lead screw mechanism 360, the connecting rod mechanism 390 can drive one end of the display screen 200 downward, thereby causing the display screen 200 to flip from the extended position to the storage position. Furthermore, this arrangement can reduce the space required for the movement of the lead screw mechanism 360 and the connecting rod mechanism 390, thereby reducing the space required for the movement of the posture adjustment assembly 2, making it easier to assemble the posture adjustment assembly 2 into the armrest body 100 and further reducing the volume of the armrest body 100.

[0210] In some specific embodiments of the present disclosure, as shown in FIG. 2 and FIG. 3 , the flip axis of the display screen 200 coincides with the flip edge 211 of the display surface 210 .

[0211] Thus, the display screen 200 can be fixed to the posture adjustment component 2 and driven to flip through the screw mechanism 360 and the connecting rod mechanism 390, and the display screen 200 can flip around the flip edge 211 of the display surface 210 during the flipping process, and the position of the flip edge 211 can remain unchanged. It can be understood that the flip edge 211 of the display surface 210 is also a side edge of the upper surface of the display screen 200. This setting can avoid the gap change or height difference between the flip edge 211 and the screen mounting surface 110 during the flipping process of the display screen 200, and thus can avoid the height of the display screen 200 from dropping, so that the flip edge 211 and the screen mounting surface 110 can always remain flush, and the rotation stability of the display screen 200 is higher.

[0212] In some specific embodiments of the present disclosure, as shown in FIG. 12 to FIG. 14 , the link mechanism 390 includes a link 391 and a bracket 300 .

[0213] One end of the connecting rod 391 is rotatably connected to the screw mechanism 360, the display screen 200 is installed on the bracket 300, and the other end of the connecting rod 391 is rotatably connected to the bracket 300. The screw mechanism 360 drives one end of the connecting rod 391 to move, so that the other end of the connecting rod 391 drives the bracket 300 to flip, thereby driving the display screen 200 to flip between the storage position and the extended position.

[0214] That is to say, the display screen 200 of the embodiment of the present disclosure may not rotate around a physical axis. Specifically, the display screen 200 may be fixedly connected to the bracket 300, and one end of the connecting rod 391 may be transmission-connected to the screw mechanism 360. When one end of the connecting rod 391 moves along the axial direction of the screw mechanism 360, the other end of the connecting rod 391 may also move radially relative to the screw mechanism 360. That is to say, the other end of the connecting rod 391 may approach or move away from the screw mechanism 360 along the radial direction of the screw mechanism 360, and then the bracket 300 may be driven by the other end of the connecting rod 391 to move toward or away from the screw mechanism 360, thereby driving the display screen 200 to flip between the storage position and the extended position.

[0215] In some specific embodiments of the present disclosure, as shown in FIG. 13 and FIG. 14 , the rotation axes at both ends of the connecting rod 391 are arranged in parallel and perpendicular to the axial direction of the screw mechanism 360 .

[0216] Among them, the rotation axes at both ends of the connecting rod 391 are parallel to the flip axis of the display screen 200, that is, the rotation axes at both ends of the connecting rod 391 are parallel to the flip edge 211 of the display surface 210. In this way, the connecting rod 391 itself will not twist, and the connecting rod 391 can drive the bracket 300 to rotate more stably, thereby improving the stability of the bracket 300 driving the display screen 200 to rotate, and the display screen 200 rotates more smoothly.

[0217] In some specific embodiments of the present disclosure, as shown in Figures 13 to 17, the bracket 300 includes an arc-shaped plate segment 310, and the bracket 300 drives the display screen 200 to flip around the central axis of the arc-shaped plate segment 310, and the central axis of the arc-shaped plate segment 310 coincides with the flip edge 211 of the display surface 210.

[0218] By aligning the rotation axis of the curved plate segment 310 with the flip edge 211 of the display surface 210, the bracket 300 can rotate about the flip edge 211, thereby driving the display screen 200 to rotate about the flip edge 211 of the display surface 210. The position of the flip edge 211 does not change, thereby preventing or minimizing the gap between the flip edge 211 and the screen mounting surface 110 of the armrest 1 from changing. This arrangement not only improves the dustproof and waterproof performance of the armrest 1, but also makes the connection between the display screen 200 and the screen mounting surface 110 more regular when in the extended position, resulting in a more aesthetically pleasing appearance.

[0219] In addition, it can be understood that the bracket 300 moves in an arc shape during the rotation process. By setting the arc-shaped plate segment 310, the area swept by the arc-shaped plate segment 310 during rotation can be smaller. This not only reduces the volume of the bracket 300 and the space required for the bracket 300 during rotation, but also avoids positional interference between the bracket 300 and other components, making the rotation of the bracket 300 more convenient.

[0220] In some specific embodiments of the present disclosure, as shown in Figures 13 to 17, the bracket 300 also includes a flat section 340, which is connected to one side of the arc length direction of the arc-shaped plate section 310, and the display screen 200 is installed on the flat section 340. It can be understood that the display screen 200 is usually also planar. By providing the bracket 300 with the flat section 340 and connecting the display screen 200, the contact area between the flat section 340 and the display screen 200 is larger, which is easier to connect, and the connection between the flat section 340 and the display screen 200 can be more stable.

[0221] In addition, the other end of the connecting rod 391 is rotatably connected to the connection between the flat plate segment 340 and the arc-shaped plate segment 310. This not only facilitates the connection between the connecting rod 391 and the bracket 300, but also allows the connecting rod 391 to be connected to a position close to the center of the bracket 300, making the supporting force more uniform, and further improving the stability of the posture adjustment component 2 in driving the display screen 200 to flip.

[0222] In some specific embodiments of the present disclosure, as shown in FIG13 , when the display screen 200 is in the storage position, the arc-shaped plate segment 310 is located inside the armrest body 100 .

[0223] Specifically, the bracket 300 is connected to the side of the display screen 200 facing away from the display surface 210. When the display screen 200 is in the storage position, the display screen 200 will cover the posture adjustment component 2, that is, the posture adjustment component 2 will be located in the armrest body 100, of course, the bracket 300 is located in the armrest body 100. In this way, not only can the armrest body 100 be used to block the posture adjustment component 2, making the appearance more beautiful, but the armrest body 100 can also be used to protect the posture adjustment component 2 to prevent the user from accidentally colliding with the posture adjustment component 2, thereby avoiding damage to the posture adjustment component 2, and the user's riding experience is also better.

[0224] In some specific embodiments of the present disclosure, as shown in FIG. 1 to FIG. 4 and FIG. 12 to FIG. 14 , the chair armrest 1 further includes a cover plate 400 .

[0225] The cover plate 400 is installed on the display screen 200. When the display screen 200 is in the storage position, the cover plate 400 is located in the storage slot 120. When the display screen 200 is in the extended position, the cover plate 400 blocks the portion of the bracket 300 extending out of the storage slot 120.

[0226] Among them, the cover plate 400 can be fixedly connected to the side of the display screen 200 facing away from the display surface 210, and the cover plate 400 can be flipped together with the display screen 200, so that when the display screen 200 is in the storage position, the cover plate 400 can also be located in the storage groove 120, and then the display screen 200 can be used to cover the cover plate 400, and the cover plate 400 will not be exposed from the armrest body 100, so as to ensure the overall appearance of the seat armrest 1. Cleanliness, and when the display screen 200 is in the extended position, the cover plate 400 can be rotated along with the display screen 200 to extend out of the storage groove 120, and the cover plate 400 can cover the part of the bracket 300 exposed in the storage groove 120, so that the user will not directly observe the bracket 300, the appearance is more beautiful, and the user can be prevented from touching the bracket 300, thereby preventing the bracket 300 from pinching the hand when rotating, which is safer.

[0227] In addition, the cover plate 400 may also be constructed in an arc shape, so that the space occupied by the cover plate 400 can be smaller and it is easier to arrange.

[0228] In some specific embodiments of the present disclosure, as shown in FIG. 12 to FIG. 14 , the posture adjustment assembly 2 further includes a slide rail frame 500 .

[0229] The rail frame 500 is fixed relative to the armrest body 100. The rail frame 500 is configured with a curved guide cavity 510. The curved plate segment 310 slidably engages with the curved guide cavity 510 to restrict the bracket 300 from rotating about the central axis of the curved plate segment 310. The central axis of the curved guide cavity 510 coincides with the flip edge 211 of the display surface 210, and the curved guide cavity 510 restricts the bracket 300 from rotating about the flip edge 211 of the display surface 210.

[0230] That is to say, the position of the slide frame 500 remains unchanged during the flipping process of the display screen 200, and the arc-shaped guide cavity 510 of the slide frame 500 can guide the rotation of the bracket 300 to make the rotation of the bracket 300 more stable. At the same time, the slide frame 500 can also play the role of fixing and supporting the bracket 300, so that the overall structure of the posture adjustment component 2 is more stable, and the rotation of the bracket 300 is smoother, which further improves the stability of the rotation of the display screen 200. The flipping edge 211 of the display surface 210 will not be offset, and the display screen 200 will have a better fit with the screen mounting surface 110 during the flipping process.

[0231] Furthermore, as shown in FIG. 12 and FIG. 18 , a damping member 320 is provided between the arc-shaped plate segment 310 and the inner wall of the arc-shaped guide cavity 510 , and the damping member 320 is used to apply a damping force to the rotation of the bracket 300 .

[0232] Among them, the damping member 320 can be a damping sleeve, a spring or a damper, etc. By adding the damping member 320, the damping force between the bracket 300 and the inner wall of the arc-shaped guide cavity 510 can be increased, so that the rotation of the bracket 300 is smoother, and the bracket 300 is prevented from rotating rapidly, thereby making the rotation of the display screen 200 smoother, and facilitating the user to adjust the rotation position of the display screen 200. At the same time, the damping member 320 can be used to absorb the instantaneous impact on the display screen 200 or the bracket 300, thereby avoiding the bracket 300 from breaking and being damaged. In addition, the damping member 320 can also eliminate the gap between the bracket 300 and the slide rail frame 500 and the gap between the teeth in the posture adjustment component 2, thereby avoiding the noise and vibration noise generated by the collision between the bracket 300 and the slide rail frame 500.

[0233] In some specific embodiments of the present disclosure, as shown in FIG. 12 and FIG. 19 , the damping members 320 are disposed on both axial sides of the arc-shaped plate segment 310 .

[0234] In this way, there is damping force between the axial sides of the arc-shaped plate segment 310 and the arc-shaped guide cavity 510, so that the damping force distribution between the arc-shaped plate segment 310 and the inner wall of the arc-shaped guide cavity 510 is more uniform, further improving the rotation stability of the bracket 300, and the flipping of the display screen 200 is more stable and reliable, avoiding the shaking of the display screen 200, and the user's viewing experience is better.

[0235] For example, the damping member 320 may be a damping sleeve. A mounting groove 321 may be provided on the side of the damping member 320 facing the arcuate plate segment 310. Insert blocks 312 are provided on both axial sides of the arcuate plate segment 310. The insert blocks 312 can be inserted into the mounting groove 321 of the damping member 320 to secure the damping member 320 to the arcuate plate segment 310. The thickness of the damping member 320 may be greater than the thickness of the arcuate plate segment 310, and the thickness of the insert blocks 312 may be less than the thickness of the remaining portion of the arcuate plate segment 310. The arcuate guide cavity 510 includes a first arcuate guide wall 511 and a second arcuate guide wall 512. The first arcuate guide wall 511 and the second arcuate guide wall 512 are provided on either side of the arcuate plate segment 310 in the thickness direction of the arcuate plate segment 310. Each damping member 320 contacts and cooperates with the first arcuate guide wall 511 and the second arcuate guide wall 512, respectively.

[0236] This facilitates assembly of the arcuate plate segment 310 and the damping member 320. Furthermore, after the damping member 320 contacts the first and second arcuate guide walls 511, 512, the arcuate plate segment 310 will not contact the first and second arcuate guide walls 511, 512. This prevents wear between the arcuate plate segment 310 and the first and second arcuate guide walls 511, 512. Furthermore, it reduces friction between the bracket 300 and the slide rail frame 500, facilitating rotation of the bracket 300. Furthermore, the arcuate guide cavity 510 can simultaneously guide both damping members 320, reducing assembly errors between the two damping members 320 and facilitating transmission errors between the gears within the posture adjustment assembly 2.

[0237] In some specific embodiments of the present disclosure, as shown in FIG. 12 , the posture adjustment assembly 2 further includes a housing 600 and a driving mechanism 700 .

[0238] The shell 600 is installed on the armrest body 100, the driving mechanism 700 is installed on the shell 600, the screw mechanism 360 is transmission-connected to the driving mechanism 700, and the driving mechanism 700 drives the bracket 300 to rotate around the central axis of the arc-shaped plate segment 310 through the screw mechanism 360 and the connecting rod 391, so that the display screen 200 is flipped between the storage position and the extended position.

[0239] Among them, the driving mechanism 700 can be a motor, and the posture adjustment component 2 can automatically drive the bracket 300 to rotate through the driving mechanism 700, thereby realizing automatic flipping of the display screen 200. Compared with manual flipping of the display screen 200, the operation is more convenient and quick, and the user experience is better.

[0240] In addition, all components of the posture adjustment assembly 2 can be installed in the shell 600, such as the drive mechanism 700, the screw mechanism 360 and the connecting rod mechanism 390, wherein the bracket 300 can be located in the shell 600 when the display screen 200 is in the storage position, and can be extended out of the shell 600 when the display screen 200 is in the extended position.

[0241] For example, the posture adjustment component 2 may have a power-off reset function. When the vehicle loses power, the posture adjustment component 2 will drive the display screen 200 to automatically return to the horizontal state of the storage position.

[0242] In some specific embodiments of the present disclosure, as shown in FIG12 , the drive mechanism 700 is arranged on one side of the radial direction of the screw mechanism 360. Thus, the drive mechanism 700 and the screw mechanism 360 can be arranged along the radial direction of the screw mechanism 360, and the drive mechanism 700 and the screw mechanism 360 can overlap in the axial direction of the screw mechanism 360. It can be understood that the axial length of the screw mechanism 360 will be greater than its radial length. Such an arrangement can avoid the overall axial length of the drive mechanism 700 and the screw mechanism 360 being too large, thereby helping to reduce the occupied space of the posture adjustment assembly 2. The volume of the posture adjustment assembly 2 can be smaller, which is convenient for arrangement and installation.

[0243] In some specific embodiments of the present disclosure, as shown in FIG. 12 to FIG. 14 and FIG. 20 , the screw mechanism 360 includes a screw rod 370 and a first nut 374 .

[0244] The screw rod 370 is in transmission connection with the driving mechanism 700. The first nut 374 is sleeved on the screw rod 370 and threadedly engaged with the screw rod 370. One end of the connecting rod 391 is rotatably connected to the first nut 374. Thus, when the driving mechanism 700 drives the screw rod 370 to rotate, the threaded engagement between the first nut 374 and the screw rod 370 converts the rotation of the screw rod 370 into linear movement of the first nut 374. The driving mechanism 700 can then drive the screw rod 370 forward and reverse to cause the first nut 374 to move back and forth along the axial direction of the screw rod 370. The end of the connecting rod 391 connected to the display screen 200 can rotate relative to the end of the connecting rod 391 connected to the first nut 374, thereby driving the display screen 200 to flip between the stowed position and the extended position.

[0245] Further, as shown in FIG. 20 , one of the first nut 374 and one end of the connecting rod 391 is provided with a first connecting rod shaft 375 , and the other is provided with a first shaft hole 394 , and the first connecting rod shaft 375 is rotatably engaged with the first shaft hole 394 .

[0246] For example, the first nut 374 may be provided with a first connecting rod shaft 375 and the connecting rod 391 may be provided with a first axial hole 394. In this way, the first connecting rod shaft 375 may extend into the first axial hole 394, allowing the connecting rod 391 to rotate relative to the first nut 374. When the driving mechanism 700 drives the screw rod 370 to rotate, the first nut 374 moves along the axial direction of the screw rod 370, and the connecting rod 391 may rotate relative to the first nut 374 while following the axial movement of the first nut 374 along the screw rod 370. The end of the connecting rod 391 away from the first nut 374 may then be used to push the bracket 300 to rotate, thereby achieving flipping of the display screen 200. Furthermore, this arrangement simplifies the connection structure between the first nut 374 and the connecting rod 391, thereby achieving a fixed connection between the first nut 374 and the connecting rod 391 to prevent separation of the first nut 374 and the connecting rod 391, and also allowing the connecting rod 391 to rotate relative to the first nut 374.

[0247] In some specific embodiments of the present disclosure, as shown in FIG. 20 , one end of the connecting rod 391 is constructed with a first connecting plate 392 and a second connecting plate 393 that are spaced apart.

[0248] The first connecting plate 392 and the second connecting plate 393 are respectively arranged on two radially opposite sides of the first nut 374. The first connecting plate 392 and the second connecting plate 393 are respectively provided with a first axial hole 394. The first nut 374 is respectively provided with a first connecting rod shaft 375 inserted into the corresponding first axial hole 394 on two radially opposite sides.

[0249] In this way, the first connecting plate 392 and the second connecting plate 393 can respectively stop at the radially opposite sides of the first nut 374. The first connecting plate 392 stops at one radial side of the first nut 374, thereby preventing the connecting rod 391 from shifting toward the direction close to the second connecting plate 393. The second connecting plate 393 stops at the other radial side of the first nut 374, thereby preventing the connecting rod 391 from shifting toward the direction close to the first connecting plate 392, thereby making the cooperation between the first connecting rod shaft 375 and the first shaft hole 394 more stable, preventing the connecting rod 391 from disengaging from the first nut 374, and making the connection between the connecting rod 391 and the first nut 374 more stable.

[0250] In addition, it should be noted that the first connecting plate 392 and the second connecting plate 393 have a certain elastic deformation ability, so that when the connecting rod 391 and the first nut 374 are assembled, the first connecting plate 392 and the second connecting plate 393 can be pulled to increase the distance between the first connecting plate 392 and the second connecting plate 393, making it convenient to insert the first connecting rod shaft 375 into the first shaft hole 394 of the first connecting plate 392 and the first shaft hole 394 of the second connecting plate 393 respectively.

[0251] In some specific embodiments of the present disclosure, as shown in FIG20 , a bearing 380 is provided between the outer circumference of the first connecting rod shaft 375 and the inner circumference of the first shaft hole 394. The bearing 380 may be a ball bearing. The addition of the bearing 380 reduces friction between the first connecting rod shaft 375 and the first shaft hole 394, resulting in less resistance when the connecting rod 391 rotates relative to the first nut 374. This not only reduces wear on the connecting rod 391 and the first nut 374, but also makes the rotation of the connecting rod 391 easier, further improving the stability of the rotation of the connecting rod 391. This allows the posture adjustment assembly 2 to more smoothly drive the display screen 200 to flip.

[0252] In some specific embodiments of the present disclosure, as shown in FIG. 12 to FIG. 14 and FIG. 20 , the screw mechanism 360 further includes a second nut 381 and an elastic member 385 .

[0253] The second nut 381 is sleeved on the screw rod 370 and threadably engaged with the screw rod 370 . The elastic member 385 is sleeved on the screw rod 370 and abuts between the first nut 374 and the second nut 381 .

[0254] It is understandable that during the production process, in order to ensure that the first nut 374 can be sleeved onto the screw rod 370 and avoid excessive friction resistance between the first nut 374 and the screw rod 370, there usually needs to be a little gap between the threads of the first nut 374 and the screw rod 370. By adding the second nut 381, and after the first nut 374 and the second nut 381 are stopped by the elastic member 385, the elastic force of the elastic member 385 can make the internal threads of the first nut 374 and the second nut 381 always press against the threads on the screw rod 370, thereby achieving the purpose of eliminating the transmission gap between the screw rod 370 and the first nut 374, and thus avoiding the first nut 374 from shaking in the radial and axial directions relative to the screw rod 370, more effectively avoiding the shaking of the display screen 200, and making the fixing and flipping of the display screen 200 more stable.

[0255] In some specific embodiments of the present disclosure, as shown in FIG. 20 , the second nut 381 includes a nut body 382 and a receiving ring 383 .

[0256] The nut body 382 is sleeved on the screw rod 370 and threadedly engaged with the screw rod 370. The elastic member 385 is stopped between the first nut 374 and the nut body 382. The accommodating ring 383 is connected to the side of the nut body 382 facing the first nut 374 and surrounds the elastic member 385 and the first nut 374.

[0257] By providing a receiving ring 383 on the second nut 381, the receiving ring 383 can accommodate the elastic member 385 and the first nut 374, that is, the first nut 374 and the elastic member 385 can both be located inside the second nut 381, so that the second nut 381 can cover the elastic member 385 and the first nut 374 to protect the elastic member 385 and the first nut 374, and prevent the elastic member 385 from colliding with other components and failing.

[0258] In addition, the peripheral wall of the accommodating ring 383 is provided with a notch 384 extending axially along the accommodating ring 383, and the first connecting rod shaft 375 is movably engaged with the notch 384. In this way, the second nut 381 can use the notch 384 to avoid positional interference between the accommodating ring 383 and the first connecting rod shaft 375.

[0259] Moreover, after the first connecting rod shaft 375 extends into the notch 384, the opposite sides of the notch 384 along the circumference of the accommodating ring 383 can respectively stop at the opposite sides of the radial direction of the first connecting rod shaft 375. When the driving mechanism 700 drives the screw rod 370 to rotate and move the first nut 374 toward the second nut 381, the first nut 374 can push the second nut 381 to move together through the elastic member 385, thereby realizing the flipping of the display screen 200 from the storage position to the extended position (or the flipping of the display screen 200 from the extended position to the storage position), and when the driving mechanism 700 drives the screw rod When 370 rotates to move the first nut 374 away from the second nut 381, since the radially opposite sides of the first connecting rod shaft 375 are respectively stopped on the side walls of the notch 384, the first connecting rod shaft 375 and the second nut 381 cannot rotate relative to each other, that is, the first nut 374 and the second nut 381 will not rotate relative to each other, and the second nut 381 follows the first nut 374 to rotate relative to the screw rod 370, thereby realizing the flipping of the display screen 200 from the extended position to the storage position (or the flipping of the display screen 200 from the storage position to the extended position).

[0260] In some specific embodiments of the present disclosure, as shown in Figure 12, the driving mechanism 700 is a motor, the posture adjustment assembly 2 also includes a deceleration and torque-increasing mechanism 900, the screw rod 370 is transmission-connected to the driving mechanism 700 through the deceleration and torque-increasing mechanism 900, and the deceleration and torque-increasing mechanism 900 includes a primary worm 910, a primary gear 920, a secondary worm 930 and a secondary gear 940.

[0261] The first-stage worm 910 is sleeved on the motor shaft of the motor and is driven to rotate by the motor shaft. The first-stage gear 920 is installed on the housing 600 and meshes with the first-stage worm 910. The second-stage worm 930 is installed on the housing 600 and rotates synchronously with the first-stage gear 920. The second-stage gear 940 is sleeved on the lead screw 370 and rotates synchronously with the gear shaft. The second-stage gear 940 meshes with the second-stage worm 930.

[0262] In this way, when the user needs to rotate the display screen 200, the driving mechanism 700 can be started, and the driving mechanism 700 can drive the first-stage worm 910 to rotate, and the power can be transmitted to the screw mechanism 360 through the first-stage worm 910, the first-stage gear 920, the second-stage worm 930 and the second-stage gear 940 in sequence, and then the display screen 200 is driven to flip through the screw mechanism 360 and the connecting rod mechanism 390. In addition, through the gear teeth coordination of the deceleration and torque-increasing mechanism 900, the rotation speed transmitted by the driving mechanism 700 to the screw mechanism 360 can be effectively reduced, and then the torque transmitted by the driving mechanism 700 to the screw mechanism 360 can be increased, so that the flipping of the display screen 200 is smoother.

[0263] Furthermore, as shown in Figures 12-14, the central axis of the primary worm 910 coincides with the central axis of the motor shaft, the central axis of the primary gear 920 coincides with the central axis of the secondary worm 930 and is perpendicular to the central axis of the primary worm 910, and the central axis of the secondary gear 940 coincides with the central axis of the lead screw 370 and is perpendicular to the secondary worm 930. In this way, the structural layout of the drive mechanism 700, the primary worm 910, the primary gear 920, the secondary worm 930, and the secondary gear 940 is more compact, so that the drive mechanism 700, the primary worm 910, the primary gear 920, the secondary worm 930, and the secondary gear 940 occupy less space and are easier to arrange.

[0264] In some specific embodiments of the present disclosure, as shown in Figures 19 and 20, a screw rod 370 includes a threaded segment 371 and a connecting segment 372 that are connected to each other. The cross-sectional area of ​​the connecting segment 372 is larger than the cross-sectional area of ​​the threaded segment 371. A first nut 374 is sleeved on the threaded segment 371 and threadedly engaged with the threaded segment 371. In this way, the end of the connecting segment 372 facing the threaded segment 371 can stop and limit the first nut 374, preventing the first nut 374 from moving into the connecting segment 372 or even separating from the screw rod 370, thereby making the cooperation between the first nut 374 and the screw rod 370 more stable and reliable.

[0265] In addition, one of the outer circumference of the connecting section 372 and the inner circumference of the secondary gear 940 is provided with a transmission rib 822 and the other is provided with a transmission groove 941. The transmission rib 822 is inserted into the transmission groove 941 so that the secondary gear 940 and the gear shaft 820 rotate synchronously.

[0266] For example, the outer circumference of the connecting section 372 can be provided with a transmission rib 822 and the inner circumference of the secondary gear 940 can be provided with a transmission groove 941. In this way, when the driving mechanism 700 is operating, the secondary gear 940 can transmit power to the screw rod 370 through the cooperation of the transmission groove 941 and the transmission rib 822, so that the screw rod 370 can rotate synchronously with the secondary gear 940. Moreover, through the transmission cooperation of the transmission groove 941 and the transmission rib 822, the power transmission between the secondary gear 940 and the screw rod 370 is more stable and reliable.

[0267] Furthermore, as shown in FIG20 , a plurality of transmission ribs 822 are arranged at intervals along the circumference of the connecting section 372 , a plurality of transmission grooves 941 are arranged at intervals along the circumference of the secondary gear 940 , and the plurality of transmission ribs 822 are inserted into the plurality of transmission grooves 941 in a one-to-one correspondence.

[0268] In this way, when the secondary gear 940 transmits power to the screw rod 370, the circumferential force on the secondary gear 940 and the screw rod 370 is more uniform, making the power transmission between the secondary gear 940 and the screw rod 370 more stable and reliable, and more effectively avoiding failure of the power transmission between the secondary gear 940 and the screw rod 370. For example, if one of the multiple transmission ribs 822 and the multiple transmission grooves 941 is damaged and fails, the cooperation of the remaining multiple transmission ribs 822 and the multiple transmission grooves 941 can still ensure power transmission between the secondary gear 940 and the screw rod 370.

[0269] In some specific embodiments of the present disclosure, as shown in Figure 20, the transmission rib 822 is arranged on the outer peripheral surface of the connecting section 372, and the end of the transmission rib 822 facing away from the threaded section 371 has a guide portion, and the height of the guide portion gradually decreases in the direction away from the threaded section 371. In this way, when assembling the connecting section 372 and the secondary gear 940, the guide portion can guide the assembly of the transmission rib 822 and the transmission groove 941, which is conducive to simplifying the assembly steps of the connecting section 372 and the secondary gear 940 and making the assembly more convenient.

[0270] In some specific embodiments of the present disclosure, as shown in FIG. 18 , the housing 600 is configured with a first limiting surface 601 and a second limiting surface 602 .

[0271] When the display screen 200 is flipped from the extended position to the stowed position, the bracket 300 abuts against the first limiting surface 601. When the display screen 200 is flipped from the stowed position to the extended position, the bracket 300 abuts against the second limiting surface 602. This ensures that the flipping range of the display screen 200 is from the stowed position to the extended position, preventing damage to the display screen 200 caused by excessive flipping.

[0272] In some specific embodiments of the present disclosure, as shown in Figure 18, the shell 600 has a first limiting rib 650 and a second limiting rib 660, the first limiting rib 650 and the second limiting rib 660 are arranged at intervals, the connecting rod 391 is located between the first limiting rib 650 and the second limiting rib 660, the first limiting rib 650 is formed with a first limiting surface 601 and a second limiting surface 602, and the second limiting rib 660 is formed with a first limiting surface 601 and a second limiting surface 602.

[0273] Specifically, the first limiting rib 650 and the second limiting rib 660 are respectively located on opposite radial sides of the screw rod 370. When the display screen 200 is in the storage position, the bracket 300 can simultaneously stop at the first limiting surface 601 of the first limiting rib 650 and the first limiting surface 601 of the second limiting rib 660. When the display screen 200 is flipped to the extended position, the bracket 300 can simultaneously stop at the second limiting surface 602 of the first limiting rib 650 and the second limiting surface 602 of the second limiting rib 660 to achieve the limitation of the display screen 200 in the storage position and the extended position.

[0274] Furthermore, by setting two limiting ribs to limit the bracket 300, the bracket 300 can be prevented from deflecting or shaking after it stops at a single limiting rib, which is beneficial to improving the limiting effect of the bracket 300 and allowing the display screen 200 to remain stable in the stored position and the extended position.

[0275] In some specific embodiments of the present disclosure, as shown in Figures 19 and 20, the bracket 300 is constructed with a first axial ear 350, the first axial ear 350 is provided with a second axial hole 351, and the other end of the connecting rod 391 is provided with a third axial hole 395. The other end of the connecting rod 391 is matched with the second axial hole 351 and the third axial hole 395, so that the second connecting rod shaft 352 is rotatably connected to the bracket 300, and then the bracket 300 can be pushed to rotate along the rotation axis of the arc-shaped plate segment 310 by rotating the connecting rod 391, so that the display screen 200 can be flipped along the flip edge 211 of the display surface 210.

[0276] In addition, when the display screen 200 is flipped from the extended position to the storage position, the first axial ear 350 stops at the first limiting surface 601. In this way, the first axial ear 350 can be used to connect the bracket 300 and the connecting rod 391 to achieve relative rotation of the bracket 300 and the connecting rod 391, and the first axial ear 350 can be used to limit the bracket 300 to achieve the limitation of the display screen 200 in the storage position. Therefore, there is no need to set up an additional structure for limiting the first limiting surface 601, which is conducive to simplifying the structure of the bracket 300.

[0277] Furthermore, as shown in Figures 18 and 19, the bracket 300 also includes a limiting folding plate 330, which is connected to the side of the arc-shaped plate segment 310 away from the display screen 200 in the arc length direction. When the display screen 200 is flipped from the storage position to the extended position, the limiting folding plate 330 stops at the first limiting surface 601, thereby limiting the display screen 200 in the extended position, making the positioning more accurate and reliable, and preventing the display screen 200 from rotating excessively.

[0278] In some specific embodiments of the present disclosure, as shown in FIG. 12 to FIG. 14 , the housing 600 includes an upper cover 610 , a lower cover 620 , a mounting bracket 640 and a slide rail bracket 500 .

[0279] The upper cover 610 and the lower cover 620 are connected to each other and jointly define a mounting cavity 630. The mounting frame 640 and the circuit board are installed on the lower cover 620 and are located in the mounting cavity 630. The drive mechanism 700 and the screw mechanism 360 are installed on the mounting frame 640. The slide rail frame 500 is installed on the mounting frame 640. The slide rail frame 500 and the lower cover 620 are arranged on opposite sides of the mounting frame 640. The arc-shaped plate segment 310 cooperates with the slide rail frame 500 to limit the rotation of the bracket 300 around the central axis of the arc-shaped plate segment 310.

[0280] In this way, the upper cover 610 and the lower cover 620 can cover components such as the drive mechanism 700, the screw mechanism 360, the connecting rod mechanism 390, the mounting frame 640 and the slide rail frame 500, so as to make the appearance of the posture adjustment component 2 more beautiful, and can prevent users from directly touching the drive mechanism 700 or the screw mechanism 360 and the connecting rod mechanism 390, which is safer. At the same time, the posture adjustment component 2 can also use the mounting frame 640 to fix components such as the drive mechanism 700, the screw mechanism 360 and the slide rail frame 500, so as to make the connection and fixation of the various components of the posture adjustment component 2 more stable. In this way, multiple parts are fixed by one mounting frame 640, which reduces assembly errors, has a better effect on controlling the gear center distance, and can appropriately reduce the noise of the gear transmission.

[0281] In some specific embodiments of the present disclosure, as shown in FIG. 13 and FIG. 14 , the chair armrest 1 further includes a gesture acquisition device 980 .

[0282] The gesture acquisition device 980 is connected to the posture adjustment component 2 , and the posture adjustment component 2 drives the display screen 200 to switch between the storage position and the extended position according to the gesture information collected by the gesture acquisition device 980 .

[0283] For example, the gesture acquisition device 980 may be an infrared sensor module. Thus, the gesture acquisition device 980 can collect user gesture information, and the user can use different gesture information to control the retraction and extension of the posture adjustment component 2, thereby controlling the retraction, extension, or flipping of the display screen 200 to different angles. For example, when the user raises their hand, the display screen 200 can rotate upward following the gesture, and when the hand lowers, the display screen 200 can rotate downward following the gesture. This further simplifies user operation, eliminating the need for the user to touch the display screen 200 or press a button to switch the position of the display screen 200. This makes operation more convenient and quick, thereby improving the user's operating experience.

[0284] In some specific embodiments of the present disclosure, the seat armrest 1 further includes a fingerprint collection device, which may be a touch screen.

[0285] The fingerprint collection device is connected to the posture adjustment component 2. The posture adjustment component 2 drives the display screen 200 to switch between the storage position and the extended position according to the fingerprint information collected by the fingerprint collection device.

[0286] Specifically, when different users save information about the flip angle of the display screen 200, they can record their fingerprints through the fingerprint collection device. The next time the user uses the display screen 200, they press their finger against the fingerprint collection device. The fingerprint collection device can then control the posture adjustment component 2 based on the fingerprint information to drive the display screen 200 to flip to a position corresponding to the fingerprint information. In other words, the display screen 200 can have multiple memory locations, each corresponding to different fingerprint information. When different users use the display screen 200, the display screen 200 can flip to the flip angle corresponding to the user's fingerprint information, further improving the user experience.

[0287] Of course, the same user can also enter multiple fingerprints, and the multiple fingerprints can correspond to different flip angles of the display screen 200. When the user presses the fingerprint collection device with different fingers, the fingerprint collection device can control the operation of the posture adjustment component 2 according to the collected fingerprint information to drive the display screen 200 to flip to the position corresponding to the fingerprint of the finger. In this way, the same user can also save multiple flip angles of the display screen 200, which more fully meets the usage needs of different users.

[0288] The following briefly describes the steps of driving the display screen 200 to flip as the posture adjustment component 2 in this embodiment:

[0289] First, the user activates the driving mechanism 700, which drives the primary worm 910 to rotate. The primary worm 910 transmits power to the primary gear 920, the secondary worm 930, and the secondary gear 940 in sequence, causing the secondary gear 940 to rotate.

[0290] Then, the secondary gear 940 transmits power to the screw rod 370 and drives the screw rod 370 to rotate synchronously, and the first nut 374 moves along the axial direction of the screw rod 370;

[0291] Finally, the connecting rod 391 follows the first nut 374 to move along the axial direction of the screw rod 370 and rotate relative to the first nut 374. While moving, the connecting rod 391 pushes the bracket 300 to rotate, and the display screen 200 follows the bracket 300 to rotate, thereby realizing the flipping of the display screen 200.

[0292] The following is a brief description of the assembly steps of the posture adjustment assembly 2 in this embodiment:

[0293] First, connect the primary worm 910 to the drive mechanism 700, then connect the drive mechanism 700 to the mounting bracket 640 and secure them with two screws.

[0294] Then, the secondary gear 940 is mounted on the screw rod 370, and the first nut 374, the elastic member 385, and the second nut 381 are sequentially mounted on the screw rod 370. At this time, the elastic member 385 must be in a certain degree of compression. Then, the first nut 374, the elastic member 385, and the second nut 381 are screwed into the screw rod 370 together.

[0295] Next, the connecting rod 391 is fixed to the first nut 374 through the two bearings 380 and then connected to the mounting bracket 640. The lower cover 620, the first gear 920 and the second worm 930 are then fixed to the mounting bracket 640 in sequence.

[0296] Then, two damping sleeves are respectively placed on opposite axial sides of the bracket 300, installed in the slide rail frame 500, and then fixed to the mounting frame 640 with screws;

[0297] Finally, the upper cover 610 and the lower cover 620 are fixed, and then the bracket 300 and the cover plate 400 are connected to the display screen 200 in sequence.

[0298] Hereinafter, a seat armrest 1 according to yet another embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0299] As shown in FIG. 21 to FIG. 26 , the chair armrest 1 according to an embodiment of the present disclosure includes an armrest body 100 , a posture adjustment assembly 2 and a display screen 200 .

[0300] The armrest body 100 has a screen mounting surface 110, and the screen mounting surface 110 is provided with a storage groove 120. The posture adjustment component 2 is provided on the armrest body 100. The display screen 200 has a display surface 210. The posture adjustment component 2 includes a transmission mechanism 800 and a connecting rod mechanism 390. The connecting rod mechanism 390 is rotatably connected to the transmission mechanism 800. The display screen 200 is installed on the connecting rod mechanism 390. The transmission mechanism 800 drives the connecting rod mechanism 390 to move along its circumference to drive the display screen 200 to flip between the storage position and the extended position.

[0301] When the display screen 200 is in the storage position, it is stored in the storage slot 120, and the display surface 210 is flush with the screen mounting surface 110. When the display screen 200 is in the extended position, at least a portion of the display screen 200 is located outside the storage slot 120, and the edge of the display surface 210 adjacent to the screen mounting surface 110 constitutes a flip edge 211, which is flush with the screen mounting surface 110.

[0302] The display screen 200 may have multiple extension positions, so that the display screen 200 can hover at different extension positions, and the angle of the extension position of the display screen 200 can be adjusted according to user needs.

[0303] For example, the screen mounting surface 110 can be the top surface of the armrest body 100. In this case, the flip axis of the display screen 200 can extend along the left-right direction of the vehicle, with the rear edge of the display screen 200 along the front-to-back direction forming the flip edge, allowing the display screen 200 to flip from front to back. Alternatively, the screen mounting surface 110 can be a side surface of the armrest body 100. In this case, the flip axis of the display screen 200 can extend along the top-to-bottom direction of the vehicle, with the upper edge of the display screen 200 along the top-to-bottom direction forming the flip edge, allowing the display screen 200 to flip from bottom to top. Of course, the flip axis and flip direction of the display screen 200 can also be adjusted according to actual needs.

[0304] According to the chair armrest 1 of the embodiment of the present disclosure, a screen mounting surface 110 is provided on the armrest main body 100, and the screen mounting surface 110 is provided with a storage groove 120, wherein the screen mounting surface 110 of the armrest main body 100 can be the upper side surface of the armrest main body 100, and the storage groove 120 can store the display screen 200, and the posture adjustment component 2 is provided on the armrest main body 100, and the display screen 200 has a display surface 210, and the display screen 200 is installed on the posture adjustment component 2, and the posture adjustment component 2 drives the display screen 200 to flip between the storage position and the extended position.

[0305] In this way, the display screen 200 can be switched between the storage position and the extended position. When the user needs to watch the display screen 200, the display screen 200 is flipped to the extended position through the posture adjustment component 2 to facilitate user viewing and improve the user viewing experience; and when the user does not need to watch the display screen 200, the display screen 200 can be flipped to the storage position through the posture adjustment component 2, which can reduce the space occupied by the display screen 200 to increase the space inside the vehicle, and after the display screen 200 is stored in the storage slot 120, the probability of collision with the display screen 200 can be reduced when the display screen 200 is not in use, which is beneficial to protect the display screen 200 and avoid damage to the display screen 200.

[0306] It should be noted that the display screen 200 is not limited to being able to hover in the extended position; the display screen 200 can hover at any position between the stowed position and the extended position. Specifically, when the display screen 200 is in the extended position, the angle between the screen mounting surface 110 and the display surface 210 can be no less than 60° and no more than 90°. When the display screen 200 is in the stowed position, the angle between the screen mounting surface 110 and the display surface 210 can be 0°.

[0307] In addition, when the display screen 200 is in the storage position, it is stored in the storage groove 120, and the display surface 210 is flush with the screen mounting surface 110. In this way, not only can the storage effect of the storage groove 120 on the display screen 200 be improved, the display screen 200 will not protrude from the screen mounting surface 110, further reducing the probability of collision with the display screen 200, better protecting the display screen 200, and the space occupied by the display screen 200 in the storage position will be reduced as much as possible. Moreover, the transition between the display screen 200 and the screen mounting surface 110 is also smoother, avoiding the height difference between the transition between the display screen 200 and the screen mounting surface 110, thereby avoiding the accumulation of dust at the transition between the display screen 200 and the screen mounting surface 110, making the appearance of the seat armrest 1 more tidy.

[0308] Furthermore, when the display screen 200 is in the extended position, at least a portion of the display screen 200 is positioned outside the storage slot 120, and the edge of the display surface 210 adjacent to the screen mounting surface 110 forms a flip edge 211, which is flush with the screen mounting surface 110. Thus, when the display screen 200 flips from the stored position to the extended position, the flip edge 211 can always remain flush with the screen mounting surface 110. That is, during the process of flipping the display screen 200 from the stored position to the extended position, the position of the flip edge 211 of the display screen 200 remains unchanged, thus preventing the entire screen of the display screen 200 from moving forward or downward. This improves the rotational stability of the display screen 200, requires less space for movement, and makes it easier for users to view the display screen when it is rotated to the extended position, thereby enhancing the viewing experience. Furthermore, the gap between the display screen 200 and the armrest body 100 does not change, or changes very little. This prevents dust from accumulating at the transition point, making the chair armrest 1 more neat in appearance, and preventing hand pinching, thereby improving the user experience.

[0309] In this way, the chair armrest 1 according to the embodiment of the present disclosure can store and raise the display screen 200, and the space required for the movement of the display screen 200 is small, which has the advantages of small space occupation, easy viewing and flat appearance.

[0310] According to some specific embodiments of the present disclosure, as shown in Figures 1 to 4 , the axial direction of the transmission mechanism 800 is arranged parallel to the flip axis of the display screen 200. This can reduce the size of the posture adjustment assembly 2 in a direction perpendicular to the flip axis of the display screen 200, facilitating miniaturization of the posture adjustment assembly 2 and making it suitable for use with an armrest body 100 having a smaller size in the direction perpendicular to the flip axis of the display screen 200.

[0311] In some specific embodiments of the present disclosure, as shown in FIG. 1 to FIG. 4 , the flip axis of the display screen 200 coincides with the flip edge 211 of the display surface 210 .

[0312] Specifically, the display screen 200 can be fixed to the posture adjustment assembly 2 and driven to flip by the posture adjustment assembly 2. During the flipping process, the display screen 200 can flip around the flip edge 211 of the display surface 210, and the position of the flip edge 211 can remain unchanged. It is understood that the flip edge 211 of the display surface 210 is a side edge of the upper surface of the display screen 200. This arrangement can prevent a change in the gap or height difference between the flip edge 211 and the screen mounting surface 110 during the flipping process of the display screen 200, thereby preventing the height of the display screen 200 from decreasing, thereby ensuring that the flip edge 211 and the screen mounting surface 110 remain flush, and the rotational stability of the display screen 200 is enhanced.

[0313] According to some specific embodiments of the present disclosure, as shown in FIG. 21 to FIG. 24 , the link mechanism 390 includes a link 391 and a bracket 300 .

[0314] One end of the connecting rod 391 is rotatably connected to the transmission mechanism 800, the display screen 200 is installed on the bracket 300, and the other end of the connecting rod 391 is rotatably connected to the bracket 300. The transmission mechanism 800 drives one end of the connecting rod 391 to rotate, so that the other end of the connecting rod 391 drives the bracket 300 to flip, thereby driving the display screen 200 to flip between the storage position and the extended position.

[0315] By setting up the bracket 300, the connection area between the posture adjustment component 2 and the display screen 300 can be increased, and the connection reliability between the posture adjustment component 2 and the display screen 300 can be ensured. By setting up the connecting rod 391, the power transmission and displacement between the bracket 300 and the transmission mechanism 800 can be realized, so that the bracket 300 drives the display screen 200 to switch between the storage position and the extended position.

[0316] According to some specific embodiments of the present disclosure, as shown in FIG24 , the rotation axes at both ends of the connecting rod 391 are arranged in parallel and parallel to the axial direction of the transmission mechanism 800. This can reduce the size of the posture adjustment assembly 2 in a direction perpendicular to the flip axis of the display screen 200, facilitating miniaturization of the posture adjustment assembly 2 and thus being suitable for use with an armrest body 100 having a smaller size in the direction perpendicular to the flip axis of the display screen 200.

[0317] According to some specific embodiments of the present disclosure, as shown in Figures 24 and 25, the bracket 300 includes an arc-shaped plate segment 310, and the bracket 300 drives the display screen 200 to flip around the central axis of the arc-shaped plate segment 310, and the central axis of the arc-shaped plate segment 310 coincides with the flip edge 211 of the display surface 210.

[0318] That is to say, the display screen 200 of the embodiment of the present disclosure can rotate around the physical axis without rotating around the physical axis, and the rotation axis of the bracket 300 is set to coincide with the flip edge 211 of the display surface 210. In this way, the bracket 300 can drive the display screen 200 to rotate around the flip edge 211 of the display surface 210 when rotating, and the position of the flip edge 211 will not change, thereby avoiding changes in the gap between the flip edge 211 and the screen mounting surface 110 of the seat armrest 1. This not only improves the dustproof and waterproof performance of the seat armrest 1, but also makes the connection between the display screen 200 and the screen mounting surface 110 more regular when in the extended position, and the appearance is more beautiful.

[0319] In addition, it can be understood that the bracket 300 moves in an arc shape during the rotation process. By setting the arc-shaped plate segment 310, the area swept by the arc-shaped plate segment 310 during rotation can be smaller. This not only reduces the volume of the bracket 300 and the space required for the bracket 300 during rotation, but also avoids positional interference between the bracket 300 and other components, making the rotation of the bracket 300 more convenient.

[0320] According to some specific embodiments of the present disclosure, as shown in Figures 24 and 25, the bracket 300 further includes a flat section 340, which is connected to one side of the arc-shaped plate section 310 in the arc length direction. The display screen 200 is mounted on the flat section 340, and one end of the connecting rod 391 is rotatably connected to the connection between the flat section 340 and the arc-shaped plate section 310. This helps to improve the stability of the bracket 300 during movement, thereby improving the stability of the display screen 200 when moving between the stowed position and the extended position, and reducing the possibility of the display screen 200 shaking.

[0321] According to some specific embodiments of the present disclosure, as shown in FIG. 21 , when the display screen 200 is in the storage position, the arc-shaped plate segment 310 is located inside the armrest body 100 .

[0322] Specifically, the bracket 300 is connected to the side of the display screen 200 facing away from the display surface 210. When the display screen 200 is in the storage position, the display screen 200 will cover the posture adjustment component 2, that is, the posture adjustment component 2 will be located in the armrest body 100, of course, the bracket 300 is also located in the armrest body 100. In this way, not only can the armrest body 100 be used to block the posture adjustment component 2, making the appearance more beautiful, but also the posture adjustment component 2 can be protected to prevent the user from accidentally colliding with the posture adjustment component 2, thereby preventing the posture adjustment component 2 from being damaged, and the user's riding experience is also better.

[0323] In some specific embodiments of the present disclosure, as shown in FIG. 2 to FIG. 4 and FIG. 21 , the chair armrest 1 further includes a cover plate 400 .

[0324] The cover plate 400 is installed on the display screen 200. When the display screen 200 is in the storage position, the cover plate 400 is located in the storage slot 120. When the display screen 200 is in the extended position, the cover plate 400 blocks the portion of the bracket 300 extending out of the storage slot 120.

[0325] Among them, the cover plate 400 can be fixedly installed on the display screen 200, that is, the cover plate 400 can be flipped together with the display screen 200, and the cover plate 400 is connected to the side of the display screen 200 facing away from the display surface 210, so that when the display screen 200 is in the storage position, the cover plate 400 can also be located in the storage groove 120, and then the display screen 200 can be used to cover the cover plate 400, and the cover plate 400 will not be exposed from the armrest body 100, so as to ensure the overall appearance of the seat armrest 1 is neat, and when the display screen 200 is in the extended position, the cover plate 400 can be rotated along with the display screen 200 to extend out of the storage groove 120, and the cover plate 400 can cover the part of the bracket 300 exposed in the storage groove 120, so that the user will not directly observe the bracket 300, the appearance is more beautiful, and the user can be prevented from touching the bracket 300, and the bracket 300 can be prevented from pinching the hand when rotating, which is safer.

[0326] In addition, the cover plate 400 may also be constructed in an arc shape that is compatible with the arc-shaped plate section 310 of the bracket 300 , so that the space occupied by the cover plate 400 may be smaller, making it easier to arrange.

[0327] In some specific embodiments of the present disclosure, as shown in FIG. 21 , FIG. 22 and FIG. 24 , the posture adjustment assembly 2 further includes a slide rail frame 500 .

[0328] The relative position of the slide rail frame 500 and the armrest body 100 is fixed. The slide rail frame 500 is configured with an arcuate guide cavity 510. The arcuate plate segment 310 of the bracket 300 slidably engages with the arcuate guide cavity 510 to restrict the bracket 300 from rotating about the central axis of the arcuate plate segment 310. The central axis of the arcuate plate segment 310 coincides with the flip edge 211 of the display surface 210. In other words, the arcuate guide cavity 510 of the slide rail frame 500 restricts the bracket 300 from rotating about the arcuate plate segment 310, that is, about the flip edge 211 of the display surface 210.

[0329] That is to say, the position of the slide frame 500 remains unchanged during the flipping process of the display screen 200, and the arc-shaped guide cavity 510 of the slide frame 500 can guide the rotation of the bracket 300. At the same time, the slide frame 500 can also play the role of fixing and supporting the bracket 300, so that the overall structure of the posture adjustment component 2 is more stable, the rotation of the bracket 300 is smoother, and the rotation stability of the display screen 200 is further improved. The flipping edge 211 of the display surface 210 will not be offset, and the display screen 200 will have a better fit with the screen mounting surface 110 during the flipping process.

[0330] Furthermore, as shown in Figures 21, 22, and 24, a damping member 320 is provided between the arcuate plate segment 310 and the inner wall of the arcuate guide cavity 510. The damping member 320 may be a damping sleeve, a spring, or a damper, and is used to apply a damping force to the rotation of the bracket 300. The addition of the damping member 320 increases the damping force between the bracket 300 and the arcuate guide cavity 510, making the rotation of the bracket 300 smoother and preventing rapid rotation of the bracket 300. This, in turn, allows for smoother rotation of the display screen 200, making it easier for the user to adjust the rotation position of the display screen 200. The damping member 320 also absorbs instantaneous impacts on the display screen 200 or the bracket 300, thereby preventing breakage or damage to the bracket 300. Furthermore, the damping member 320 eliminates the gap between the bracket 300 and the slide rail 500, as well as the gap between the teeth of the posture adjustment assembly 2, thereby preventing noise and vibration generated by collision between the bracket 300 and the slide rail 500.

[0331] Furthermore, as shown in Figures 21, 22, and 24, damping elements 320 are provided on both axial sides of the arcuate plate segment 310. This provides damping force between both axial sides of the arcuate plate segment 310 and the arcuate guide cavity 510, resulting in a more even distribution of the damping force between the arcuate plate segment 310 and the inner wall of the arcuate guide cavity 510. This further improves the rotational stability of the bracket 300, making the display screen 200 more stable and reliable when flipping, preventing shaking of the display screen 200 and providing a better viewing experience for the user.

[0332] For example, as shown in Figures 21, 22 and 24, the damping member 320 can be a damping sleeve, and a mounting groove 321 can be provided on the side of the damping member 320 facing the arc-shaped plate segment 310, and plug blocks 312 are provided on both axial sides of the arc-shaped plate segment 310. The plug blocks 312 can be inserted into the mounting groove 321 of the damping member 320, thereby achieving the fixation of the damping member 320 and the arc-shaped plate segment 310, wherein the thickness of the damping member 320 can be greater than that of the arc-shaped plate segment 310. 0, and the thickness of the insert 312 can be less than the thickness of the rest of the arc-shaped plate segment 310. The arc-shaped guide cavity 510 has a first arc-shaped guide wall 511 and a second arc-shaped guide wall 512. The first arc-shaped guide wall 511 and the second arc-shaped guide wall 512 are respectively arranged on both sides of the arc-shaped plate segment 310 in the thickness direction of the arc-shaped plate segment 310. Each damping member 320 is in contact with and cooperates with the first arc-shaped guide wall 511 and the second arc-shaped guide wall 512 respectively.

[0333] This facilitates the assembly of the arc-shaped plate segment 310 and the damping member 320. Moreover, after the damping member 320 contacts the inner wall of the arc-shaped guide cavity 510, the arc-shaped plate segment 310 will not contact the inner wall of the arc-shaped guide cavity 510, thereby avoiding wear between the arc-shaped plate segment 310 and the arc-shaped guide cavity 510. At the same time, the friction between the bracket 300 and the slide rail bracket 500 can be reduced, thereby facilitating the rotation of the bracket 300.

[0334] Furthermore, the arc-shaped guide cavity 510 can guide the two damping members 320 at the same time, thereby reducing the assembly error between the two damping members 320 and facilitating the reduction of the transmission error between the gears within the posture adjustment assembly 2 .

[0335] According to some specific embodiments of the present disclosure, as shown in FIG. 21 , FIG. 22 and FIG. 24 , the posture adjustment assembly 2 further includes a housing 600 and a driving mechanism 700 .

[0336] The shell 600 is installed on the armrest body 100, the driving mechanism 700 is installed on the shell 600, and the transmission mechanism 800 is respectively connected to the driving mechanism 700 and the bracket 300. The driving mechanism 700 drives the bracket 300 to rotate around the central axis of the arc-shaped plate segment 310 through the transmission mechanism 800 to drive the display screen 200 to flip between the storage position and the extended position.

[0337] Among them, the driving mechanism 700 can be a motor, and the posture adjustment component 2 can automatically drive the bracket 300 to rotate through the driving mechanism 700, thereby realizing automatic flipping of the display screen 200. Compared with manual flipping of the display screen 200, the operation is more convenient and quick, and the user experience is better.

[0338] In addition, all components of the posture adjustment assembly 2 can be installed in the shell 600, such as the driving mechanism 700, the transmission mechanism 800 and the bracket 300. The bracket 300 can be located in the shell 600 when the display screen 200 is in the storage position, and can be extended from the shell 600 when the display screen 200 is in the extended position.

[0339] For example, the posture adjustment component 2 may have a power-off reset function. When the vehicle loses power, the transmission mechanism 800 will drive the display screen 200 to automatically return to the horizontal state of the storage position.

[0340] According to some specific embodiments of the present disclosure, as shown in Figures 21, 22, and 24, the drive mechanism 700 is disposed at one axial end of the transmission mechanism 800. This reduces the size of the posture adjustment assembly 2 in a direction perpendicular to the flip axis of the display screen 200, facilitating miniaturization of the posture adjustment assembly 2 and making it suitable for use with an armrest body 100 having a smaller size in the direction perpendicular to the flip axis of the display screen 200.

[0341] According to some specific embodiments of the present disclosure, as shown in FIG. 24 , the transmission mechanism 800 includes a gear sleeve 810 .

[0342] The gear sleeve 810 is provided with a fourth shaft hole 812 , and one end of the connecting rod 391 is provided with a fifth shaft hole 396 . One end of the connecting rod 391 is rotatably connected to the gear sleeve 810 via a connecting rod shaft 397 that fits in the fourth shaft hole 812 and the fifth shaft hole 396 .

[0343] In this way, the posture adjustment component 2 can transmit power to the gear sleeve 810 through the driving mechanism 700 to drive the gear sleeve 810 to rotate, and the gear sleeve 810 then transmits power to the arc plate segment 310 through the connecting rod 391, which can drive the bracket 300 to rotate, so as to realize the flipping, extension and storage of the display screen 200.

[0344] According to some specific embodiments of the present disclosure, as shown in FIG24 , the outer circumferential surface of the gear sleeve 810 is provided with second axial lugs 813 spaced apart along the axial direction of the gear sleeve 810. Each second axial lug 813 is provided with a fourth axial hole 812. One end of the connecting rod 391 is positioned between adjacent second axial lugs 813. By positioning one end of the connecting rod 391 between adjacent second axial lugs 813, not only is a transmission connection achieved between the gear sleeve 810 and the connecting rod 391, but the second axial lugs 813 can also position the connecting rod 391 in the axial direction of the gear sleeve, thereby ensuring the relative position between the gear sleeve 810 and the connecting rod 391.

[0345] In some specific embodiments of the present disclosure, as shown in FIG. 24 , the transmission mechanism 800 further includes a gear shaft 820 and a fixing member 840 .

[0346] The gear sleeve 810 is connected to the driving mechanism 700 through the gear shaft 820. The outer peripheral surface of the gear shaft 820 is provided with a ring piece 830. The gear sleeve 810 is sleeved on the gear shaft 820 and rotates synchronously with the gear shaft 820. The fixing part 840 is installed on the gear shaft 820. The gear sleeve 810 is confined between the ring piece 830 and the fixing part 840 in the axial direction of the gear shaft 820.

[0347] In other words, the ring piece 830 and the fixing piece 840 are respectively located at the axial ends of the gear sleeve 810, so that the ring piece 830 and the fixing piece 840 can be used to axially limit the gear sleeve 810, so that the relative positions of the gear sleeve 810 and the gear shaft 820 in the axial direction of the gear shaft 820 are fixed, and the gear sleeve 810 will not shake in position, which is conducive to making the power transmission between the gear sleeve 810 and the bracket 300 more stable.

[0348] Furthermore, as shown in FIG. 24 , the transmission mechanism 800 further includes an elastic member 850 . The elastic member 850 is sleeved on the gear shaft 820 and abuts between the gear sleeve 810 and the fixing member 840 .

[0349] For example, the elastic member 850 can be a spring, which is arranged on the gear shaft 820 and is located between the gear sleeve 810 and the fixing member 840. Moreover, after the transmission mechanism 800 is assembled in place, the elastic member 850 can be in a compressed state, so that the fixing member 840 can press the gear sleeve 810 through the elastic member 850, and then the gear sleeve 810 can be pressed between the fixing member 840 and the ring piece 830, further improving the stability of the position fixation of the gear sleeve 810, making it less likely for the gear sleeve 810 to shake along the axial direction of the gear shaft 820, and the cooperation between the gear sleeve 810 and the bracket 300 is more stable. The transmission mechanism 800 can stably transmit power to the bracket 300, thereby driving the display screen 200 to flip stably.

[0350] In some specific embodiments of the present disclosure, as shown in Figure 24, the transmission mechanism 800 also includes a gasket 860, which is sleeved on the gear shaft 820 and located between the elastic member 850 and the gear sleeve 810. In this way, the elastic member 850 can be stopped against the gear sleeve 810 through the gasket 860. By adding the gasket 860, it is convenient to stop against the elastic member 850. The abutment between the elastic member 850 and the gasket 860 is more stable, and the contact area between the gasket 860 and the gear sleeve 810 is larger, so that the elastic member 850 can reliably press the gear sleeve 810 against the ring piece 830, further improving the axial fixing effect of the gear sleeve 810.

[0351] In some specific embodiments of the present disclosure, as shown in FIG. 24 , the transmission mechanism 800 further includes a transmission block 870 and a friction plate 880 .

[0352] The transmission block 870 is sleeved on the gear shaft 820. The transmission block 870 is located between the gear sleeve 810 and the ring plate 830 and rotates synchronously with the gear shaft 820. The friction plate 880 is located between the transmission block 870 and the gear sleeve 810. The transmission block 870 transmits the rotation of the gear shaft 820 to the gear sleeve 810 through the friction plate 880.

[0353] It should be noted that the friction force between the friction plate 880 and the transmission block 870, as well as the friction force between the friction plate 880 and the gear sleeve 810 are both greater than the driving force required for flipping the display screen 200. In this way, when the display screen 200 is actively driven to flip through the driving mechanism 700, the transmission block 870 can transmit power to the gear sleeve 810 through the friction plate 880, and then drive the gear sleeve 810 to rotate, so as to realize the flipping of the display screen 200.

[0354] When the display screen 200 tends to flip under the action of external force, for example, when the user manually turns the display screen 200 or accidentally collides with the display screen 200, if the external force is greater than the friction between the friction plate 880 and the transmission block 870, or the external force is greater than the friction between the friction plate 880 and the gear sleeve 810, then relative rotation will occur between the gear sleeve 810 and the friction plate 880 or between the friction plate 880 and the transmission block 870, and the display screen 200 will be pushed to flip by the external force. This arrangement can avoid the situation where the display screen 200 is broken or cracked due to excessive external force after the transmission mechanism 800 locks the display screen 200.

[0355] In some specific embodiments of the present disclosure, as shown in Figure 24, one of the ring plate 830 and the transmission block 870 is provided with a slot 831 and the other is provided with a tooth 871, and the tooth 871 is inserted into the slot 831 to enable the transmission block 870 to rotate synchronously with the gear shaft 820.

[0356] For example, the ring piece 830 can be provided with a slot 831 and the transmission block 870 can be provided with a tooth 871. In this way, when the ring piece 830 rotates synchronously with the gear shaft 820, the power can be transmitted to the transmission block 870 through the cooperation of the slot 831 and the tooth 871, so that the transmission block 870 can rotate synchronously with the gear shaft 820. Moreover, through the transmission cooperation of the slot 831 and the tooth 871, the power transmission between the ring piece 830 and the transmission block 870 is more stable and reliable.

[0357] Furthermore, as shown in FIG24 , a plurality of slots 831 are spaced apart along the circumference of the ring piece 830, and a plurality of teeth 871 are spaced apart along the circumference of the transmission block 870, with the plurality of teeth 871 being inserted into the plurality of slots 831 in a one-to-one correspondence. Thus, when the ring piece 830 transmits power to the transmission block 870, the circumferential force on the ring piece 830 and the transmission block 870 is more uniform, making the power transmission between the ring piece 830 and the transmission block 870 more stable and reliable, and more effectively preventing the failure of the power transmission between the ring piece 830 and the transmission block 870. For example, if one of the plurality of teeth 871 and the plurality of slots 831 is damaged and fails, the cooperation of the remaining plurality of teeth 871 and the plurality of slots 831 can still ensure the power transmission between the ring piece 830 and the transmission block 870.

[0358] In some other specific embodiments of the present disclosure, the transmission mechanism 800 further includes a transmission block 870 and a clutch device 890 .

[0359] The transmission block 870 is sleeved on the gear shaft 820. The transmission block 870 is located between the gear sleeve 810 and the ring plate 830 and rotates synchronously with the gear shaft 820. The clutch device 890 is located between the transmission block 870 and the gear sleeve 810. The clutch device 890 controls whether power is transmitted between the transmission block 870 and the gear sleeve 810.

[0360] Specifically, when the clutch device 890 is engaged, the clutch device 890 can transmit power, that is, the transmission block 870 can transmit power to the gear sleeve 810 through the clutch device 890, and then drive the gear sleeve 810 to rotate, so as to realize the driving mechanism 700 driving the display screen 200 to flip; when the clutch device 890 is disengaged, the power transmission of the clutch device 890 is interrupted, that is, no power is transmitted between the transmission block 870 and the gear sleeve 810. When the display screen 200 is manually flipped, the rotational force of the display screen 200 will not be transmitted to the transmission block 870 through the clutch device 890, thereby protecting the driving mechanism 700.

[0361] In some specific embodiments of the present disclosure, as shown in Figure 24, the outer peripheral surface of the gear shaft 820 is provided with a groove 821, and the fixing member 840 is a retaining spring, which is clamped in the groove 821. Thus, the groove 821 can pre-position the position of the retaining spring, and after the retaining spring is clamped in the groove 821, the axial direction of the gear sleeve 810 can be limited.

[0362] In some specific embodiments of the present disclosure, as shown in Figures 4 and 9, the driving mechanism 700 is a motor, the posture adjustment assembly 2 also includes a deceleration and torque-increasing mechanism 900, the gear shaft 820 is transmission-connected to the driving mechanism 700 through the deceleration and torque-increasing mechanism 900, and the deceleration and torque-increasing mechanism 900 includes a primary worm 910, a primary gear 920, a secondary worm 930 and a secondary gear 940.

[0363] The first-stage worm 910 is sleeved on the motor shaft of the motor and is driven to rotate by the motor shaft. The first-stage gear 920 is installed on the housing 600 and engages with the first-stage worm 910. The second-stage worm 930 is installed on the housing 600 and rotates synchronously with the first-stage gear 920. The second-stage gear 940 is sleeved on the gear shaft 820 and rotates synchronously with the gear shaft 820. The second-stage gear 940 engages with the second-stage worm 930.

[0364] In this way, when the user needs to rotate the display screen 200, the driving mechanism 700 can be started, and the driving mechanism 700 can drive the first-stage worm 910 to rotate, and the power can be transmitted to the transmission mechanism 800 in sequence through the first-stage worm 910, the first-stage gear 920, the second-stage worm 930 and the second-stage gear 940, and then the display screen 200 is driven to flip through the transmission mechanism 800. In addition, through the gear teeth coordination of the deceleration and torque-increasing mechanism 900, the rotation speed transmitted from the driving mechanism 700 to the transmission mechanism 800 can be effectively reduced, and then the torque transmitted from the driving mechanism 700 to the transmission mechanism 800 can be increased, so that the flipping of the display screen 200 is smoother.

[0365] Furthermore, the central axis of the primary worm 910 coincides with the central axis of the motor shaft, the central axis of the primary gear 920 coincides with the central axis of the secondary worm 930 and is perpendicular to the central axis of the primary worm 910, and the central axis of the secondary gear 940 coincides with the central axis of the gear shaft 820 and is perpendicular to the secondary worm 930. In this way, the structural layout of the drive mechanism 700, the primary worm 910, the primary gear 920, the secondary worm 930, and the secondary gear 940 is more compact, so that the drive mechanism 700, the primary worm 910, the primary gear 920, the secondary worm 930, and the secondary gear 940 occupy less space and are easier to arrange.

[0366] In some specific embodiments of the present disclosure, as shown in Figure 24, one of the outer circumferential surface of the gear shaft 820 and the inner circumferential surface of the secondary gear 940 is provided with a transmission rib 822 and the other is provided with a transmission groove 941, and the transmission rib 822 is inserted into the transmission groove 941 so that the secondary gear 940 rotates synchronously with the gear shaft 820.

[0367] For example, the outer circumference of the gear shaft 820 can be provided with a transmission rib 822 and the inner circumference of the secondary gear 940 can be provided with a transmission groove 941. In this way, when the driving mechanism 700 is operating, the secondary gear 940 can transmit power to the gear shaft 820 through the cooperation of the transmission groove 941 and the transmission rib 822, so that the gear shaft 820 can rotate synchronously with the secondary gear 940. Moreover, through the transmission cooperation of the transmission groove 941 and the transmission rib 822, the power transmission between the secondary gear 940 and the gear shaft 820 is more stable and reliable.

[0368] Furthermore, as shown in FIG24 , a plurality of transmission ribs 822 are arranged at intervals along the circumference of the gear shaft 820 , a plurality of transmission grooves 941 are arranged at intervals along the circumference of the secondary gear 940 , and the plurality of transmission ribs 822 are inserted into the plurality of transmission grooves 941 in a one-to-one correspondence.

[0369] In this way, when the secondary gear 940 transmits power to the gear shaft 820, the circumferential force on the secondary gear 940 and the gear shaft 820 is more uniform, so that the power transmission between the secondary gear 940 and the gear shaft 820 is more stable and reliable, and the power transmission failure between the secondary gear 940 and the gear shaft 820 is more effectively avoided. For example, when one of the multiple transmission ribs 822 and the multiple transmission grooves 941 is damaged and fails, the cooperation of the remaining multiple transmission ribs 822 and the multiple transmission grooves 941 can still ensure the power transmission between the secondary gear 940 and the gear shaft 820.

[0370] In some specific embodiments of the present disclosure, as shown in Figure 24, the transmission rib 822 is provided on the outer peripheral surface of the gear shaft 820, and the end of the transmission rib 822 facing away from the gear sleeve 810 has a guide portion 823, and the height of the guide portion 823 gradually decreases in the direction away from the gear sleeve 810. In this way, when assembling the gear shaft 820 and the secondary gear 940, the guide portion 823 can guide the assembly of the transmission rib 822 and the transmission groove 941, which is conducive to simplifying the assembly steps of the gear shaft 820 and the secondary gear 940 and making the assembly more convenient.

[0371] In some specific embodiments of the present disclosure, as shown in Figures 21 and 22, Figures 25 and 26, the shell 600 is constructed with a first limiting surface 601 and a second limiting surface 602. When the display screen 200 is flipped from the extended position to the storage position, the bracket 300 stops at the first limiting surface 601. When the display screen 200 is flipped from the storage position to the extended position, the bracket 300 stops at the second limiting surface 602.

[0372] In this way, it can be determined that the flipping range of the display screen 200 is from the storage position to the extended position, thereby preventing the display screen 200 from being flipped too much and being damaged.

[0373] According to some specific embodiments of the present disclosure, as shown in Figures 21, 22, 25, and 26, the housing 600 has a first limiting rib 650 and a second limiting rib 660. The first limiting rib 650 and the second limiting rib 660 are spaced apart, the connecting rod 391 is located between the first limiting rib 650 and the second limiting rib 660, and the first limiting rib 650 and the second limiting rib 660 form a first limiting surface 601. The first limiting rib 650 and the second limiting rib 660 can be provided on the mounting bracket 640 described below. The first limiting rib 650 and the second limiting rib 660 are provided on a side of the mounting bracket 640 close to the display screen 200.

[0374] By setting the first limiting rib 650 and the second limiting rib 660, it can be ensured that the stopping force applied to the bracket 300 in its axial direction is uniform, and the bracket 300 will not be deflected. In addition, the first limiting rib 650 and the second limiting rib 660 are arranged at intervals, leaving sufficient space for the movement of the connecting rod 391, and the first limiting surface 601 will not interfere with the connecting rod 391.

[0375] According to some specific embodiments of the present disclosure, as shown in Figures 21, 22, 25, and 26, the bracket 300 is configured with a limit block 341. When the display screen 200 is flipped from the extended position to the retracted position, the limit block 341 abuts against the first limit surface 601. The limit block 341 is provided on the side of the flat section 340 facing away from the display screen 200. By providing the limit block 341 to cooperate with the first limit surface 601, the reliability of the limit can be improved.

[0376] Furthermore, the bracket 300 further includes a limiting folding plate 330 connected to the side of the arc-shaped plate segment 310 in the arc length direction away from the display screen 200. When the display screen 200 is flipped from the storage position to the extended position, the limiting folding plate 330 abuts against the second limiting surface 602. This provides more reliable positioning.

[0377] According to some specific embodiments of the present disclosure, as shown in FIG. 4 and FIG. 9 , the housing 600 includes an upper cover 610 , a lower cover 620 , a mounting bracket 640 and a slide rail bracket 500 .

[0378] The upper cover 610 and the lower cover 620 are connected to each other and jointly define an installation cavity 630. The installation frame 640 is installed on the lower cover 620 and is located in the installation cavity 630. The driving mechanism 700 and the transmission mechanism 800 are installed on the installation frame 640. The slide rail frame 500 is installed on the installation frame 640. The slide rail frame 500 and the lower cover 620 are arranged on opposite sides of the installation frame 640. The arc plate segment 310 cooperates with the slide rail frame 500 to limit the rotation of the bracket 300 around the central axis of the arc plate segment 310.

[0379] In this way, the upper cover 610 and the lower cover 620 can cover components such as the drive mechanism 700, the transmission mechanism 800, the mounting frame 640 and the slide rail frame 500, so that the appearance of the posture adjustment component 2 is more beautiful, and the user can be prevented from directly touching the drive mechanism 700 or the transmission mechanism 800, which is safer. At the same time, the posture adjustment component 2 can also use the mounting frame 640 to fix components such as the drive mechanism 700, the transmission mechanism 800 and the slide rail frame 500, so that the connection and fixation of the various components of the posture adjustment component 2 are more stable. In this way, multiple parts are fixed by one mounting frame 640, which reduces assembly errors, has a better effect on controlling the gear center distance, and can appropriately reduce the noise of the gear transmission.

[0380] The lower cover 620 and the mounting frame 640 are installed with a circuit board 950 , and the circuit board 950 is connected to the driving mechanism 700 for controlling the operation of the driving mechanism 700 .

[0381] In some specific embodiments of the present disclosure, as shown in FIG. 2 and FIG. 3 , the chair armrest 1 further includes a gesture acquisition device 980 .

[0382] The gesture acquisition device 980 is connected to the posture adjustment component 2 , and the posture adjustment component 2 drives the display screen 200 to flip between the storage position and the extended position according to the gesture information collected by the gesture acquisition device 980 .

[0383] For example, the gesture acquisition device 980 can be an infrared sensing module. In this way, the gesture acquisition device 980 can collect the user's gesture information. The user can rely on different gesture information to control the retraction and extension of the posture adjustment component 2, and then control the display screen 200 to be retracted, extended or flipped to different angles. For example, when the user raises his hand, the display screen 200 can rotate upward following the gesture. When the hand drops, the display screen 200 can rotate downward following the gesture, further simplifying the user's operation. The user does not need to switch the position of the display screen 200 by touching the display screen 200 or pressing a button. The operation is more convenient and quick, which is conducive to improving the user's operating experience.

[0384] In some specific embodiments of the present disclosure, as shown in Figures 21 and 22, the seat armrest 1 further includes a fingerprint collection device 970. The fingerprint collection device 970 can be a touch screen.

[0385] For example, the fingerprint collection device 970 can be exposed from the armrest body 100 to facilitate the collection of user fingerprint information. The fingerprint collection device 970 is connected to the posture adjustment component 2. The posture adjustment component 2 drives the display screen 200 to flip between the storage position and the extended position according to the fingerprint information collected by the fingerprint collection device 970.

[0386] Specifically, when different users save the information of the flip angle of the display screen 200, they can enter the fingerprint through the fingerprint collection device 970. When the user uses the display screen 200 next time, by pressing the finger on the fingerprint collection device 970, the fingerprint collection device 970 can control the posture adjustment component 2 to drive the display screen 200 to flip to the position corresponding to the fingerprint information according to the fingerprint information. That is to say, the display screen 200 can have multiple memory positions, and the multiple memory positions correspond to different fingerprint information respectively. When different users use the display screen 200, the display screen 200 can flip to the flip angle corresponding to the fingerprint information of the user, further improving the user experience.

[0387] Of course, the same user can also enter multiple fingerprints, and the multiple fingerprints can correspond to different flip angles of the display screen 200. When the user presses the fingerprint collection device 970 with different fingers, the fingerprint collection device 970 can control the operation of the posture adjustment component 2 according to the collected fingerprint information to drive the display screen 200 to flip to the position corresponding to the fingerprint of the finger. In this way, the same user can also save multiple flip angles of the display screen 200, which more fully meets the usage needs of different users.

[0388] The following briefly describes the steps of driving the display screen 200 to flip as the posture adjustment component 2 in this embodiment:

[0389] First, the user activates the driving mechanism 700, which drives the primary worm 910 to rotate. The primary worm 910 transmits power to the primary gear 920, the secondary worm 930, and the secondary gear 940 in sequence, causing the secondary gear 940 to rotate.

[0390] Then, the secondary gear 940 transmits power to the gear shaft 820 and drives the gear shaft 820 to rotate synchronously, and the ring piece 830 rotates synchronously with the gear shaft 820;

[0391] Finally, the ring plate 830 drives the gear sleeve 810 to rotate through the friction plate 880 , and the gear sleeve 810 can drive the bracket 300 to rotate, and the display screen 200 rotates along with the bracket 300 , thereby realizing the flipping of the display screen 200 .

[0392] The following is a brief description of the assembly steps of the posture adjustment assembly 2 in this embodiment:

[0393] First, connect the drive mechanism 700 and the mounting bracket 640 and secure them with two screws;

[0394] Then, after the secondary gear 940 is sleeved onto the gear shaft 820, the transmission block 870, friction plate 880, gear sleeve 810, gasket 860, and elastic member 850 are sequentially sleeved onto the gear shaft 820. The fixing member 840 is then snapped into the groove 821 of the gear shaft 820 to form the transmission mechanism 800. The assembled transmission mechanism 800 is then fixed to the mounting bracket 640.

[0395] Next, fix the lower cover 620, the first gear 920, and the second gear 940 to the mounting bracket 640 respectively;

[0396] Then, two damping sleeves are respectively placed on opposite axial sides of the bracket 300, installed in the slide rail frame 500, and then fixed to the mounting frame 640 with screws;

[0397] Finally, the upper cover 610 and the lower cover 620 are fixed, and then the bracket 300 and the cover plate 400 are connected to the display screen 200 in sequence.

[0398] 27 , a seat 1000 according to an embodiment of the present disclosure is shown. The seat 1000 includes the armrest 1 according to the above embodiment of the present disclosure.

[0399] According to the seat 1000 of the embodiment of the present disclosure, the display screen 200 can be stored and raised by utilizing the seat armrest 1 according to the above embodiment of the present disclosure, and the space required for the movement of the display screen 200 is small, which has the advantages of small space occupation, easy viewing and flat appearance.

[0400] 28 , a vehicle 2000 according to an embodiment of the present disclosure is shown. The vehicle 2000 includes the seat 1000 according to the above embodiment of the present disclosure.

[0401] According to the vehicle 2000 of the embodiment of the present disclosure, by utilizing the seat 1000 according to the above embodiment of the present disclosure, the display screen 200 can be stored and raised, and the space required for the movement of the display screen 200 is small, which has the advantages of small space occupation, easy viewing and flat appearance.

[0402] Other structures and operations of the seat armrest 1, seat 1000, vehicle 2000, posture adjustment assembly 2 and seat armrest screen 3 according to the embodiment of the present disclosure are well known to those skilled in the art and will not be described in detail here.

[0403] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0404] Although the embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A chair armrest (1), characterized in that: include: An armrest body (100), the armrest body (100) having a screen mounting surface (110), the screen mounting surface (110) being provided with a storage groove (120); A posture adjustment component (2), wherein the posture adjustment component (2) is arranged on the armrest body (100); as well as A display screen (200), the display screen (200) having a display surface (210), the display screen (200) being mounted on the posture adjustment component (2), the posture adjustment component (2) driving the display screen (200) to flip between a storage position and an extended position; When the display screen (200) is in the storage position, it is stored in the storage groove (120), and the display surface (210) is flush with the screen installation surface (110); when the display screen (200) is in the extended position, at least a portion of the display screen (200) is located outside the storage groove (120), and the edge of the display surface (210) adjacent to the screen installation surface (110) forms a flip edge (211), and the flip edge (211) is flush with the screen installation surface (110).

2. The chair armrest (1) according to claim 1, characterized in that: The flip axis of the display screen (200) coincides with the flip edge (211) of the display surface (210).

3. The chair armrest (1) according to claim 1 or 2, characterized in that: The posture adjustment component (2) comprises: A bracket (300), the bracket (300) being connected to the display screen (200), the bracket (300) comprising an arc-shaped plate segment (310), the bracket (300) driving the display screen (200) to flip around a central axis of the arc-shaped plate segment (310), the central axis of the arc-shaped plate segment (310) being coincident with a flip edge (211) of the display surface (210).

4. The chair armrest (1) according to claim 3, characterized in that: When the display screen (200) is in the storage position, the arc-shaped plate segment (310) is located inside the armrest body (100).

5. The chair armrest (1) according to claim 3 or 4, characterized in that: Also includes: A cover plate (400), the cover plate (400) being mounted on the display screen (200); Wherein, when the display screen (200) is in the storage position, the cover plate (400) is located in the storage slot (120); when the display screen (200) is in the extended position, the cover plate (400) covers the portion of the bracket (300) that extends out of the storage slot (120).

6. The chair armrest (1) according to any one of claims 3 to 5, characterized in that: The posture adjustment component (2) also includes: A slide rail frame (500), wherein the relative position of the slide rail frame (500) and the armrest body (100) is fixed, and the slide rail frame (500) is configured with an arc-shaped guide cavity (510), and the arc-shaped plate segment (310) of the bracket (300) can be slidably matched with the arc-shaped guide cavity (510) to limit the bracket (300) to rotate around the central axis of the arc-shaped plate segment (310).

7. The chair armrest (1) according to claim 6, characterized in that: A damping member (320) is provided between the arc-shaped plate segment (310) and the inner wall of the arc-shaped guide cavity (510), and the damping member (320) is used to apply a damping force to the rotation of the bracket (300).

8. The chair armrest (1) according to claim 7, characterized in that: The damping member (320) is disposed on two axial sides of the arc-shaped plate segment (310).

9. The chair armrest (1) according to claim 8, characterized in that: The damping member (320) is a damping sleeve, and insert blocks (312) are provided on both axial sides of the arc-shaped plate segment (310), and the insert blocks (312) are inserted into the damping sleeve; The arc-shaped guide cavity (510) comprises a first arc-shaped guide wall (511) and a second arc-shaped guide wall (512), wherein the first arc-shaped guide wall (511) and the second arc-shaped guide wall (512) are arranged on both sides of the arc-shaped plate segment (310) in the thickness direction of the arc-shaped plate segment (310), and each of the damping members (320) is respectively in contact with and cooperates with the first arc-shaped guide wall (511) and the second arc-shaped guide wall (512).

10. The chair armrest (1) according to any one of claims 3 to 9, characterized in that: The posture adjustment component (2) also includes: A shell (600), wherein the shell (600) is mounted on the armrest body (100); a driving mechanism (700), the driving mechanism (700) being mounted on the housing (600); and A transmission mechanism (800), the transmission mechanism (800) being transmission-connected to the driving mechanism (700) and the bracket (300) respectively, the driving mechanism (700) driving the bracket (300) to rotate around the central axis of the arc-shaped plate segment (310) through the transmission mechanism (800), so as to drive the display screen (200) to flip between the storage position and the extended position.

11. The chair armrest (1) according to claim 10, characterized in that: The transmission mechanism (800) comprises: A gear sleeve (810), the gear sleeve (810) is drivingly connected to the driving mechanism (700), the outer peripheral surface of the gear sleeve (810) is provided with first meshing teeth (811), the outer peripheral surface of the arc-shaped plate segment (310) is provided with second meshing teeth (311), and the first meshing teeth (811) and the second meshing teeth (311) are meshed.

12. The chair armrest (1) according to claim 11, characterized in that The transmission mechanism (800) further comprises: A gear shaft (820), the gear sleeve (810) is transmission-connected to the driving mechanism (700) via the gear shaft (820), and the gear sleeve (810) is sleeved on the gear shaft (820) and rotates synchronously with the gear shaft (820).

13. The chair armrest (1) according to claim 12, characterized in that The transmission mechanism (800) further comprises: An axial limiting mechanism (801), wherein the axial limiting mechanism (801) is disposed on the gear shaft (820) and cooperates with the gear sleeve (810), and the axial limiting mechanism (801) fixes the position of the gear sleeve (810) in the axial direction of the gear shaft (820).

14. The chair armrest (1) according to claim 13, characterized in that The axial limiting mechanism (801) comprises: A ring plate (830), wherein the ring plate (830) is arranged on the outer peripheral surface of the gear shaft (820); A fixing member (840) is installed on the gear shaft (820), and the gear sleeve (810) is confined between the ring plate (830) and the fixing member (840) in the axial direction of the gear shaft (820).

15. The chair armrest (1) according to claim 14, characterized in that The transmission mechanism (800) further comprises: An elastic member (850) is sleeved on the gear shaft (820) and abuts between the gear sleeve (810) and the fixing member (840).

16. The chair armrest (1) according to claim 15, characterized in that The transmission mechanism (800) further comprises: A gasket (860), wherein the gasket (860) is sleeved on the gear shaft (820) and is located between the elastic member (850) and the gear sleeve (810).

17. The chair armrest (1) according to any one of claims 14 to 16, characterized in that: The transmission mechanism (800) further comprises: A transmission block (870), wherein the transmission block (870) is sleeved on the gear shaft (820), the transmission block (870) is located between the gear sleeve (810) and the ring plate (830) and rotates synchronously with the gear shaft (820); and A friction plate (880), wherein the friction plate (880) is arranged between the transmission block (870) and the gear sleeve (810), and the transmission block (870) transmits the rotation of the gear shaft (820) to the gear sleeve (810) through the friction plate (880).

18. The chair armrest (1) according to claim 17, characterized in that One of the ring plate (830) and the transmission block (870) is provided with a slot (831) and the other is provided with a latch tooth (871), and the latch tooth (871) is inserted into the slot (831) so that the transmission block (870) and the gear shaft (820) rotate synchronously.

19. The chair armrest (1) according to claim 18, characterized in that The plurality of slots (831) are arranged at intervals along the circumference of the ring sheet (830), the plurality of teeth (871) are arranged at intervals along the circumference of the transmission block (870), and the plurality of teeth (871) are inserted into the plurality of slots (831) in a one-to-one correspondence.

20. The chair armrest (1) according to any one of claims 14 to 16, characterized in that: The transmission mechanism (800) further comprises: a transmission block (870), wherein the transmission block (870) is sleeved on the gear shaft (820), the transmission block (870) is located between the gear sleeve (810) and the ring plate (830) and rotates synchronously with the gear shaft (820); and A clutch device (890), wherein the clutch device (890) is disposed between the transmission block (870) and the gear sleeve (810), and the clutch device (890) controls whether power is transmitted between the transmission block (870) and the gear sleeve (810).

21. The chair armrest (1) according to any one of claims 14 to 20, characterized in that: The outer peripheral surface of the gear shaft (820) is provided with a groove (821), and the fixing member (840) is a retaining spring, which is retained in the groove (821).

22. The chair armrest (1) according to any one of claims 12 to 21, characterized in that: The driving mechanism (700) is a motor, the posture adjustment assembly (2) further comprises a speed reduction and torque increase mechanism (900), the gear shaft (820) is transmission-connected to the driving mechanism (700) via the speed reduction and torque increase mechanism (900), and the speed reduction and torque increase mechanism (900) comprises: A primary worm (910), the primary worm (910) being sleeved on a motor shaft of the motor and driven to rotate by the motor shaft; A primary gear (920), the primary gear (920) being mounted on the housing (600) and meshing with the primary worm (910); a secondary worm (930), the secondary worm (930) being mounted on the housing (600) and rotating synchronously with the primary gear (920); and A secondary gear (940), wherein the secondary gear (940) is sleeved on the gear shaft (820) and rotates synchronously with the gear shaft (820), and the secondary gear (940) is meshed with the secondary worm (930).

23. The chair armrest (1) according to claim 22, characterized in that The central axis of the primary worm (910) coincides with the central axis of the motor shaft, the central axis of the primary gear (920) coincides with the central axis of the secondary worm (930) and is perpendicular to the central axis of the primary worm (910), and the central axis of the secondary gear (940) coincides with the central axis of the gear shaft (820) and is perpendicular to the secondary worm (930).

24. The chair armrest (1) according to claim 22 or 23, characterized in that One of the outer circumferential surface of the gear shaft (820) and the inner circumferential surface of the secondary gear (940) is provided with a transmission rib (822) and the other is provided with a transmission groove (941), and the transmission rib (822) is inserted into the transmission groove (941) so that the secondary gear (940) and the gear shaft (820) rotate synchronously.

25. The chair armrest (1) according to claim 24, characterized in that The plurality of transmission ribs (822) are arranged at intervals along the circumference of the gear shaft (820), the plurality of transmission grooves (941) are arranged at intervals along the circumference of the secondary gear (940), and the plurality of transmission ribs (822) are inserted into the plurality of transmission grooves (941) in a one-to-one correspondence.

26. The chair armrest (1) according to claim 24 or 25, characterized in that The transmission rib (822) is arranged on the outer circumferential surface of the gear shaft (820), and the end of the transmission rib (822) facing away from the gear sleeve (810) has a guide portion (823), and the height of the guide portion (823) gradually decreases in a direction away from the gear sleeve (810).

27. The chair armrest (1) according to any one of claims 10 to 26, characterized in that: The housing (600) is configured with a first limiting surface (601) and a second limiting surface (602); When the display screen (200) flips from the extended position to the stored position, the bracket (300) stops at the first limiting surface (601); When the display screen (200) flips from the storage position to the extended position, the bracket (300) stops at the second limiting surface (602).

28. The chair armrest (1) according to claim 27, characterized in that The bracket (300) further comprises a limiting folding plate (330), wherein the limiting folding plate (330) is connected to a side of the arc-shaped plate segment (310) in the arc length direction and away from the display screen (200); When the display screen (200) is flipped from the storage position to the extended position, the limiting folding plate (330) stops at the second limiting surface (602).

29. The chair armrest (1) according to any one of claims 10 to 28, characterized in that: The posture adjustment component (2) also includes: a circuit board (950), the circuit board (950) being mounted on the housing (600) and connected to the driving mechanism (700); and A potentiometer (960) is installed on the circuit board (950), and the potentiometer (960) has a detection gear (961). The detection gear (961) is meshed with the first meshing tooth (811) to detect the rotation angle information of the gear sleeve (810) and store the rotation angle information in the circuit board (950).

30. The chair armrest (1) according to claim 29, characterized in that The housing (600) comprises: Upper cover (610); A lower cover (620), wherein the upper cover (610) and the lower cover (620) are connected to each other and jointly define a mounting cavity (630); a mounting frame (640), the mounting frame (640) and the circuit board (950) being mounted on the lower cover (620) and located in the mounting cavity (630), and the driving mechanism (700) and the transmission mechanism (800) being mounted on the mounting frame (640); and A slide rail frame (500), the slide rail frame (500) is installed on the mounting frame (640), the slide rail frame (500) and the lower cover (620) are arranged on opposite sides of the mounting frame (640), and the arc-shaped plate segment (310) cooperates with the slide rail frame (500) to limit the bracket (300) to rotate around the central axis of the arc-shaped plate segment (310).

31. The chair armrest (1) according to any one of claims 1 to 30, characterized in that: Also includes: A gesture acquisition device (980), wherein the gesture acquisition device (980) is connected to the posture adjustment component (2), and the posture adjustment component (2) drives the display screen (200) to flip between the storage position and the extended position according to the gesture information collected by the gesture acquisition device (980).

32. The chair armrest (1) according to any one of claims 1 to 31, characterized in that Also includes: A fingerprint collection device (970), the fingerprint collection device (970) is connected to the posture adjustment component (2), and the posture adjustment component (2) drives the display screen (200) to flip between the storage position and the extended position according to the fingerprint information collected by the fingerprint collection device (970).

33. A chair (1000), characterized in that: Comprising a chair armrest (1) according to any one of claims 1-32.

34. A vehicle (2000), characterized in that: Comprising a seat (1000) according to claim 33.

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