Vehicle-mounted display screen transmission device, display screen and vehicle

Abstract

According to the vehicle-mounted display screen transmission device, the display screen and the vehicle, a single-motor driving scheme is adopted, the double actions of sliding and overturning of the display screen are achieved through the transmission mode of double sliding execution pieces and a double-connecting-rod mechanism and the transmission design of a pulley-inhaul cable, that is, double-action cooperation is achieved through a single driving source, and the display screen is driven by the single driving source. In the whole movement process, track controllability is achieved through self-constraint of a mechanical structure, the movement process is precise and coherent, continuous adjustability of overturning and translation is guaranteed, action switching is smooth without pause, and the requirement for continuous adjustment stability of different angles and distances is met. Therefore, the structural design can replace a traditional multi-motor independent driving scheme, precise control over two-dimensional movement by a single driving source is achieved through time sequence cooperation of a mechanical structure, the overall framework of the driving system is simplified, the film watching distance and angle can be flexibly adjusted, and the requirements of customers with different ranks and heights are met.

Description

Technical Field

[0001] This invention relates to the field of vehicle display technology, and more particularly to a vehicle display transmission device, a display screen, and a vehicle. Background Technology

[0002] As people's material needs continue to grow, more and more consumers are choosing to buy vehicles with in-vehicle rotating screens. With the continuous upgrading of users' needs for the in-vehicle experience, the size of in-vehicle entertainment screens has shown a significant growth trend: from the early 15.6-inch ceiling-mounted screen to 21.4 inches, and the sliding screen size has been expanded to 30 inches, which directly reflects the increasing trend of user demand.

[0003] In the current market for rear-seat entertainment screens in vehicles, most products employ a single movement mechanism of flipping or sliding, which is insufficient to meet user needs. Furthermore, a few high-end models feature a dual-action mode that combines sliding and flipping, and a small number of dual-action entertainment screen products are still under development. To further optimize the in-car viewing experience and provide the best viewing angle for users in different seats and of varying heights, the industry has gradually promoted the development of dual-action entertainment screens that include left / right / forward / backward sliding and flipping. However, from the perspective of the drive solutions for these products, existing dual-action (sliding and flipping) entertainment screens generally use a combination of dual motors or more, achieving the flipping and sliding actions of the display screen through separate drives. This structural design and control logic are overly complex, hindering the installation, removal, and maintenance of the display screen, and resulting in high costs for both motor hardware and control logic. This poses significant cost pressures in the increasingly competitive new energy vehicle market.

[0004] Therefore, it is of great significance to design an in-vehicle display screen that can achieve both sliding and flipping actions through a single motor drive system. Summary of the Invention

[0005] To overcome the technical problem of complex structural design caused by the need for dual-motor or multi-motor drive schemes in traditional vehicle-mounted displays as described above, this invention provides a vehicle-mounted display transmission device, a display screen, and a vehicle. This vehicle-mounted display transmission device can realize the sliding and flipping actions of the display screen through a single motor drive system, which can be used with large screens and can also flexibly adjust the viewing distance to meet the needs of customers of different heights.

[0006] The technical solution adopted by this invention to solve its problem is: A vehicle-mounted display screen transmission device, comprising: Two sliding guide members, the two sliding guide members being parallel to each other and both extending along a first direction; Two first sliding actuators and two second sliding actuators, wherein one of the first sliding actuators and the second sliding actuator are slidably disposed on one of the sliding guides, and the other of the first sliding actuators and the second sliding actuator are slidably disposed on the other sliding guide; when the second sliding actuator is in the self-locking position, there is resistance between the second sliding actuator and the sliding guide. Two linkage mechanisms, one end of which is hinged to the first sliding actuator and the other end of which is hinged to the second sliding actuator, with a display screen disposed between the two linkage mechanisms; A driving mechanism is used to drive the first sliding actuator to slide on the sliding guide; When the first sliding actuator and the second sliding actuator are not in contact, the driving mechanism can drive the first sliding actuator to move closer to or further away from the second sliding actuator. The second sliding actuator remains in a fixed position under the resistance, and the linkage mechanism rotates to cause the display screen to flip. When the first sliding actuator and the second sliding actuator are in contact, the driving mechanism can drive the first sliding actuator and the second sliding actuator to slide simultaneously in a first direction to cause the display screen to translate.

[0007] In the above scheme, the movement process of the vehicle display screen transmission device can be divided into two cases: In the first scenario: when the first and second sliding actuators are not in contact, the second sliding actuator is in a self-locking position, where there is resistance between it and the sliding guide. When the drive mechanism operates, it can drive the first sliding actuator to slide towards or away from the second sliding actuator. The second sliding actuator remains in place due to the resistance, causing the linkage mechanism between the two sliding actuators to rotate. This, in turn, causes the display screen mounted on the linkage mechanism to flip. This flipping action can be divided into a flipping-to-open action and a flipping-to-close action depending on the direction of the flipping. Furthermore, the flipping angle of the display screen can be adjusted according to the movement distance of the second sliding actuator to meet the viewing needs of different angles.

[0008] The second scenario: When the first sliding actuator slides to contact the second sliding actuator, the display screen flips open to its final position. At this point, if the drive mechanism continues to drive the first sliding actuator in its original rotation direction, the first sliding actuator can push the second sliding actuator to slide simultaneously in the first direction, with the sliding direction being the direction in which the second sliding actuator moves away from the first sliding actuator. During this process, because the first and second sliding actuators are in close contact, the linkage mechanism between them does not rotate, but only moves synchronously with the two sliding actuators, thereby causing the display screen mounted on the linkage mechanism to perform a translational movement in the first direction.

[0009] When the second sliding actuator moves to a self-locking position away from the initial state, if the drive mechanism reverses, it can drive the first sliding actuator to slide back. The first sliding actuator drives the second sliding actuator to slide through the linkage mechanism. The linkage mechanism only moves synchronously with the two sliding actuators, thereby causing the display screen mounted on the linkage mechanism to perform a translational movement in the first direction. Based on this, the front and rear positions of the display screen can be adjusted after the screen is opened to meet the viewing needs of customers with different seats and different heights.

[0010] As a preferred embodiment, the linkage mechanism includes a first link and a second link, one end of the first link and one end of the second link are hinged together, the other end of the first link is hinged together with the first sliding actuator, and the other end of the second link is hinged together with the second sliding actuator; a display screen is disposed between the two first links or the two second links.

[0011] In the above solution, the linkage mechanism adopts a hinged design between the first and second links, forming a closed-loop structure with two links and three hinge points. The two ends of each link are hinged to two sliding actuators, and the display screen is mounted symmetrically on the two links. Based on this structural design, on the one hand, the multi-degree-of-freedom characteristics of the hinge nodes allow the flipping motion to better conform to a circular trajectory. Combined with the linear motion of the first sliding actuator, this achieves mechanical coupling between flipping and translation, avoiding motion interference. On the other hand, the symmetrical distribution of the two links forms a stable load-bearing structure, which can evenly distribute the weight of the large screen. Compared to a single-link design, this significantly improves the load-bearing capacity and meets the rigid requirements of large screen usage. Simultaneously, the modular double-link design facilitates length adjustment according to screen size, enhancing the versatility of the solution and further optimizing adaptability for vehicle installation.

[0012] As a preferred embodiment, when the first sliding actuator slides toward or away from the second sliding actuator, the first link and the second link rotate relative to each other, thereby causing the display screen to flip.

[0013] In the above scheme, when the first sliding actuator approaches or moves away from the second sliding actuator, it can directly drive the relative rotation between the two linkages, forming a precise transmission with mechanical coupling. This allows the flip angle to be linearly related to the displacement of the first sliding actuator, enabling the display screen to be continuously adjustable from 0 to 90°, precisely matching the viewing angle of users of different heights and in different positions.

[0014] As a preferred embodiment, when the first sliding actuator slides towards the second sliding actuator, the linkage mechanism drives the display screen to perform an opening and flipping action; when the first sliding actuator slides away from the second sliding actuator, the linkage mechanism drives the display screen to perform a closing and flipping action.

[0015] In the above solution, the sliding direction of the first sliding actuator precisely corresponds to the screen opening / closing flip action, achieving a closed-loop mechanical action logic. When the first sliding actuator approaches the second sliding actuator, the linkage mechanism is driven to retract, causing the display screen to open and flip. The action progresses gradually with the displacement of the sliding actuator, and the opening angle can be controlled as needed (e.g., stopping at any angle from 0° to 90°). When the first sliding actuator moves away from the second sliding actuator, the linkage mechanism simultaneously extends, driving the display screen to close and flip, ensuring the screen accurately returns to its initial retracted state. Simultaneously, the screen opening / closing flip action is linearly correlated with the movement of the first sliding actuator, resulting in a smooth and shock-free flipping process. This ensures both the accuracy of the viewing angle when the screen is open and the space storage efficiency when the screen is closed, further enhancing the stability of the mechanism's operation.

[0016] As a preferred embodiment, in any state, the positions of the two first sliding actuators correspond to those of the two sliding guides in the first direction, and the positions of the two second sliding actuators correspond to those of the two sliding guides in the first direction.

[0017] In the above solution, by maintaining the height symmetry of the first and second sliding actuators on the dual sliding guides, it is possible to ensure that the force on both sides of the display screen is balanced, avoiding tilting or twisting of the display screen due to height differences after installation. At the same time, during the flipping and translation process, the symmetrical structure ensures that the linkage mechanism is subjected to uniform force, reduces local mechanical stress, ensures the stability of the large screen, and makes the movement trajectory more precise, reducing the risk of jamming.

[0018] As a preferred embodiment, the driving mechanism drives the two first sliding actuators to slide at equal speeds on the sliding guide.

[0019] In the above scheme, the drive mechanism ensures that the sliding speeds of the two first sliding actuators are equal, which can achieve complete synchronization of the movement on both sides of the display screen, avoid unilateral overload or trajectory deviation caused by speed difference, and ensure that the screen always maintains a stable posture during flipping and translation, further improving operational reliability.

[0020] As a preferred embodiment, the self-locking position is provided with a slot, and the second sliding actuator is provided with a spring ball. When the second sliding actuator is in the self-locking position, the spring ball is engaged in the slot, so that there is resistance between the second sliding actuator and the sliding guide.

[0021] In the above scheme, the spring ball engages with the slot to form a mechanical lock. Through the physical cooperation of the two, a stable and controllable resistance is provided for the initial state, ensuring that when the first and second sliding actuators are not in contact, only the first sliding actuator moves independently while the second sliding actuator remains stationary, providing precise resistance constraint for the display screen flipping action. When the first sliding actuator contacts and drives the second sliding actuator to slide, the spring is compressed, causing the ball to disengage from the slot, and the first resistance disappears, realizing a mechanically triggered switch from flipping to translational movement. The action transition is reliable and has a fast response speed. At the same time, the spring buffer structure in the spring ball reduces rigid collisions between the slot and the ball, reducing the wear rate of both. Compared with the continuous sliding non-positioning mode, the multi-level resistance nodes set in this scheme allow users to perceive position switching through mechanical feedback, without relying on an electronic control system, reducing operational complexity and failure risk.

[0022] As a preferred embodiment, the self-locking position includes an initial self-locking position and several stage self-locking positions; when the second sliding actuator is located in the initial self-locking position, there is a first resistance between the second sliding actuator and the sliding guide; when the second sliding actuator is located in the stage self-locking position, there is a second resistance between the second sliding actuator and the sliding guide; the hinge of the linkage mechanism has rotational resistance, which is less than the first resistance and greater than the second resistance.

[0023] In the above scheme, the rotational resistance, the first resistance, and the second resistance are designed in a graded manner to achieve orderly switching between each action stage. Specifically, when the first sliding actuator and the second sliding actuator are not in contact, and the second sliding actuator is in the initial self-locking position, because the rotational resistance at the linkage hinge is less than the first resistance experienced by the second sliding actuator, when the first sliding actuator is driven, the linkage mechanism rotates first (achieving flipping), while the second sliding actuator remains stationary due to the first resistance, ensuring that the flipping action is completed smoothly and independently. When the first and second sliding actuators come into contact, the translational movement phase begins. The first sliding actuator pushes the second sliding actuator to sequentially translate along a preset direction to the subsequent self-locking position. When moving in the opposite direction, because the second resistance provided by the initial self-locking position is less than the rotational resistance of the linkage mechanism, the linkage mechanism maintains a fixed posture due to the greater rotational resistance, preventing accidental flipping. Therefore, the first sliding actuator pulls the second sliding actuator back through the linkage mechanism until the second sliding actuator returns to its initial self-locking position. At this point, the second sliding actuator is again subjected to the first resistance and remains stationary, while the first sliding actuator continues to move. The linkage mechanism rotates, realizing the flipping action of the display screen. Based on this, through a purely mechanical resistance-graded design, the independence of the flipping and translational phases is ensured, while interference during phase switching is eliminated, improving the reliability and accuracy of the mechanism's operation.

[0024] As a preferred embodiment, the initial self-locking position is provided with a first slot, the stage self-locking position is provided with a second slot, and the second sliding actuator is provided with a spring ball; when the second sliding actuator is in the initial self-locking position, the spring ball is engaged in the first slot, so that there is a first resistance between the second sliding actuator and the sliding guide; when the second sliding actuator is in the stage self-locking position, the spring ball is engaged in the second slot, so that there is a second resistance between the second sliding actuator and the sliding guide.

[0025] In the above scheme, the spring ball engages with the first slot to form a mechanical lock. Through the physical cooperation of the two, a stable and controllable first resistance is provided for the initial state, ensuring that when the first and second sliding actuators are not in contact, only the first sliding actuator moves independently while the second sliding actuator remains stationary, providing precise resistance constraint for the display screen flipping action. When the first sliding actuator contacts and drives the second sliding actuator to slide, the spring is compressed, causing the ball to disengage from the first slot, the first resistance disappears, and a mechanically triggered switch from flipping to translational movement is achieved. The action transition is reliable and has a fast response speed. At the same time, the spring buffer structure in the spring ball reduces the rigid collision between the first slot and the ball, reducing the wear rate of both.

[0026] Meanwhile, the sliding guide's several second slots cooperate with the spring balls of the second sliding actuator to form a multi-level positioning structure. When the spring balls are engaged in different second slots, the second resistance can achieve segmented locking and self-locking of the second sliding actuator on the translation path. Based on the above structural design, the display screen can be stably stopped at multiple preset positions during translation, accurately matching the viewing distance needs of users with different car seats (such as front and rear seats) and different heights, avoiding display screen position shifts and shaking caused by vehicle movement, and improving usage stability.

[0027] Compared to the continuous sliding non-positioning mode, the multi-level resistance nodes in this solution allow users to perceive position changes through mechanical feedback, eliminating the need for an electronic control system and reducing operational complexity and the risk of failure. Furthermore, the spacing between the slots can be designed as needed, enhancing the mechanism's adaptability to diverse usage scenarios. The second slot and the first slot form a complete mechanical constraint system of "initial locking - multi-level translational positioning," further optimizing motion controllability and user experience.

[0028] As a preferred embodiment, the depth of the second card slot is less than the depth of the first card slot.

[0029] In the above design, the structural design where the second slot is less deep than the first slot essentially achieves resistance gradation between the first resistance, second resistance, and rotational resistance through differences in physical structure. Because the first slot is deeper, it forms a stronger engagement with the spring ball, ensuring sufficient stability of the first resistance of the second sliding actuator in the initial state and preventing accidental movement due to external forces during the flipping phase. The shallower second slot reduces the engagement force, making the second resistance less than the first resistance. This satisfies the positioning requirements during translation while reducing the operational effort required to switch positions, ensuring reliable differentiation between different stages of action.

[0030] As a preferred embodiment, the rotational resistance is the preload at the hinge of the linkage mechanism; or, the hinge of the linkage mechanism is provided with a friction damping structure to give the linkage mechanism rotational resistance.

[0031] Among them, the scheme that provides rotational resistance through preload at the hinge requires no additional components. The resistance value can be flexibly set by adjusting the bolt tightness and interference fit, adapting to the weight requirements of different sized displays. The structure is extremely simple and low-cost, and can be quickly calibrated during assembly. The scheme that adopts a friction damping structure provides stable resistance through special damping components (such as friction plates and damping rings). Its damping coefficient is less affected by temperature and vibration, and its performance degradation rate is low after long-term use. It can maintain the consistency of rotational resistance and can maintain smooth rotation during the flipping phase and attitude locking during the translation phase for a long time.

[0032] Both of the above solutions can accurately match the requirements of resistance grading, ensuring orderly switching between the flipping and translation stages, avoiding motion interference, and improving the stability and durability of the mechanism, providing flexible and adaptable technical options for different application scenarios.

[0033] As a preferred embodiment, on any one of the sliding guide members, the number of the second slots is at least three, and they are arranged sequentially at intervals along the first direction; the spacing between the second slots is equal; or, the spacing between the second slots is unequal.

[0034] In the above solution, the multi-slot design provides multiple levels of translation positioning points, covering the full range of adjustment needs from near to far, avoiding limitations in viewing distance adaptation caused by insufficient positioning points. When the spacing of the second slots is set to equal, uniform gradient adjustment can be achieved, allowing users to predict the position based on linear logic, making operation more intuitive. When the spacing of the second slots is set to unequal, the slots can be densely arranged for high-frequency usage scenarios (such as regular rear seating positions or temporary front viewing), while being sparsely arranged in non-high-frequency areas, precisely meeting the usage needs of different users.

[0035] As a preferred embodiment, the driving mechanism further includes an actuator, which includes a cable and a plurality of pulleys. The cable passes through the plurality of pulleys in sequence and is fixedly connected to two first sliding actuators. The driving mechanism is used to drive the two first sliding actuators to slide synchronously on the sliding guide via the actuator.

[0036] As a preferred embodiment, the drive mechanism further includes a take-up reel, and the cable includes a first cable and a second cable; the take-up reel is wound with the outwardly extending first cable, one end of the first cable is connected to one of the first sliding actuators after passing through a plurality of pulleys, and the other end of the first cable is connected to another first sliding actuator after passing through a plurality of pulleys; one end of the second cable is connected to one of the first sliding actuators, and the other end is connected to another first sliding actuator after passing through a plurality of pulleys; by rotating the take-up reel, the two first sliding actuators can be driven to slide synchronously on the sliding guide.

[0037] In the above scheme, the drive mechanism adopts a take-up reel drive design, and synchronously drives the two first sliding actuators through the first and second cables of the actuator. When the take-up reel rotates, the first cable, guided by a pulley, pulls one of the first sliding actuators to slide. Then, this first sliding actuator drives the other first sliding actuator to slide through the second cable. The steering action of the pulley can flexibly adapt to the layout requirements of the confined space in the vehicle, ensuring balanced force on the cable and avoiding overload on one side, thereby ensuring that the sliding speed of the two sliding actuators is strictly consistent, and enhancing the symmetry of the flipping and translational movements. Compared with rigid transmissions such as gears and lead screws, cable transmission has the advantages of lightweight structure and flexible layout. It works synergistically with the single-motor drive scheme to achieve linear adjustment of the displacement of the sliding actuators, high action accuracy, reduced space occupation, low friction loss in the transmission process, high transmission efficiency, and enhanced reliability and adaptability of the overall mechanism.

[0038] As a preferred embodiment, the pulleys include a first pulley, a second pulley, a third pulley, a fourth pulley, a fifth pulley, and a sixth pulley. One end of the first cable is connected to one of the first sliding actuators after passing through the first pulley, and the other end of the first cable is connected to another first sliding actuator after passing through the second pulley and the third pulley. One end of the second cable is connected to one of the first sliding actuators, and after passing through the fourth pulley, the fifth pulley, and the sixth pulley, the other end is connected to another first sliding actuator.

[0039] In the above scheme, the pulley mechanism achieves high-precision synchronous driving of two first sliding actuators through a closed cable design with multiple pulleys. When the take-up reel rotates, the first cable, guided by the first pulley, pulls one of the first sliding actuators to slide. Then, this first sliding actuator drives the other first sliding actuator to slide synchronously through the second cable. This achieves equal displacement and synchronous speed, eliminating unilateral lag or offset problems, ensuring that the display screen maintains stable posture during flipping and translation, and avoiding structural stress concentration caused by differences in movement on both sides.

[0040] Preferably, the guiding effect of the six pulleys ensures that the cable transmission direction aligns with the direction of the sliding guide (i.e., the first direction), reducing frictional interference between the cable and other components and improving drive efficiency. Furthermore, the closed cable design avoids the risk of loosening, and the smooth rotation of the pulleys allows for more precise motion response of the sliding actuators. This layout makes full use of the limited space inside the vehicle, optimizing the cable path through pulley steering. It achieves coordinated action of the two sliding actuators without the need for additional synchronization mechanisms, further simplifying the structure, reducing costs, and forming a highly efficient combination with the single-motor drive scheme, enhancing the overall reliability and stability of the mechanism.

[0041] As a preferred embodiment, the pulley further includes a seventh pulley through which the first cable and / or the second cable pass, and the seventh pulley is used to adjust the tension of the first cable and / or the second cable.

[0042] As a preferred embodiment, the drive mechanism further includes a motor and a helical gear, the output end of the motor is connected to a worm gear, the worm gear meshes with the helical gear, and the helical gear is fixedly connected to the take-up reel.

[0043] In the above scheme, the drive mechanism adopts a motor-worm gear-helical gear drive combination, forming a high-efficiency drive chain with the take-up reel-cable system, which can significantly enhance the stability of the mechanism's operation. The meshing of the worm gear and helical gear has a natural self-locking characteristic, preventing the take-up reel from rotating in the opposite direction due to external forces (such as vehicle bumps), ensuring reliable locking of the sliding actuator position and preventing accidental displacement of the display screen. Simultaneously, the worm gear drive can achieve a large reduction ratio, converting the high-speed output of the motor into low-speed, precise rotation of the take-up reel, improving the displacement control accuracy of the sliding actuator, and allowing for more refined adjustment of the flip angle and translation distance.

[0044] Based on the same design concept, the present invention also provides a display screen that uses the above-mentioned vehicle display screen transmission device, the display screen including a display screen body, the display screen body being installed between the two linkage mechanisms.

[0045] In the above technical solution, the double-link mechanism stably supports the display screen body from both sides, evenly distributing the stress generated by the screen's weight to the sliding guides and actuators on both sides, preventing deformation or damage caused by excessive force at a single point. Simultaneously, the synchronized movement of the two linkages ensures the display screen body maintains a stable posture during flipping and translation, reducing swaying or shifting and improving viewing stability. This installation method, along with the drive and transmission mechanisms, forms a modular combination, facilitating mass assembly and subsequent maintenance, further enhancing the reliability and adaptability of the display screen product.

[0046] Based on the same design concept, the present invention also provides a vehicle with the above-mentioned display screen, wherein the display screen is installed inside the vehicle.

[0047] In the above technical solution, the display screen is installed inside the vehicle, which can fully adapt to the small space inside the vehicle. Through flipping and sliding adjustment, it can accurately meet the viewing needs of passengers in different rows in the front and rear and users of different heights. The transmission mechanism operates stably, without redundant space occupation, and does not interfere with driving safety, effectively enhancing the practicality and comfort of in-vehicle entertainment.

[0048] In summary, the vehicle-mounted display screen transmission device, display screen, and vehicle provided by the present invention have at least the following technical advantages compared to existing solutions: 1) This invention employs a single-motor drive scheme, utilizing a transmission method involving dual sliding guides, dual sliding actuators, and a dual linkage mechanism to achieve both sliding and flipping actions of the display screen. Specifically, it achieves coordinated dual actions through a single drive source. Under the action of the drive mechanism, through the cooperation of the dual sliding actuators and the dual linkage mechanism, in the first stage, the drive mechanism drives the first sliding actuator to move independently, while the second sliding actuator remains stationary due to initial resistance, allowing the linkage mechanism to rotate independently and achieve display screen flipping. When the first and second sliding actuators contact each other, the second stage begins, where the synchronized movement of the dual sliding actuators drives the linkage mechanism to translate, completing the display screen's translational action. This design replaces the traditional multi-motor independent drive scheme, achieving precise control of two-dimensional motion from a single drive source through the sequential coordination of mechanical structures. This simplifies the overall architecture of the drive system, ensures the coordination of the dual actions, and allows for flexible adjustment of viewing distance and angle to meet the needs of customers with different seating positions and heights.

[0049] 2) This invention achieves seamless action transitions through the mechanical switching of the contact states of the sliding actuators. During the display screen flipping phase, the force balance is achieved by the independent sliding of the first sliding actuator and the initial resistance of the second sliding actuator, allowing the linkage mechanism to rotate stably along a preset trajectory, ensuring precise adjustment of the flipping angle. During the display screen translation phase, the two sliding actuators move in close contact and synchronously, while the linkage mechanism maintains a relatively fixed posture and translates with the sliding actuators, avoiding any jamming or deviation in the action. Based on this, the entire motion process achieves controllable trajectory through the self-constraint of the mechanical structure, ensuring precise and continuous motion. This guarantees both the continuous adjustability of flipping and translation, and the smooth, uninterrupted switching of actions, meeting the stability requirements for continuous adjustment at different angles and distances.

[0050] 3) The single-motor drive design directly reduces the space occupied by a single drive mechanism. Combined with a compact dual-sliding guide-dual-sliding actuator-dual-linkage assembly, the overall mechanism occupies significantly less space than traditional multi-motor solutions, making it particularly suitable for the confined installation environment of the rear seats. During installation and maintenance, the modular sliding guide and actuator can be disassembled individually, reducing the difficulty of inspection and maintenance. In terms of cost, in addition to saving on motor hardware costs, the single drive source eliminates the need for complex multi-motor collaborative control algorithms. The simplified control logic significantly reduces software development costs. Simultaneously, the reduced range of motion decreases the risk of interference with other components in the vehicle, providing structural feasibility for mounting large displays (such as a 30-inch display).

[0051] 4) This invention precisely covers different usage scenarios through a wide range of adjustable flip angles and translation distances. For users in different rear seats, the viewing distance can be adjusted by sliding the display screen; for people of different heights, the display screen flip angle can be adjusted from 0-90° to match the eye level, making it flexible and adaptable to various scenarios. Combined with the large screen design, it not only meets users' visual needs for a large screen, but also eliminates the distance adaptation problem brought about by the large screen through mechanical adjustment, solving the limitations of traditional fixed screens or single-action screens in multiple vehicle scenarios. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the vehicle-mounted display screen transmission device of the present invention; Figure 2 This is a schematic diagram of the structure of the sliding guide and the sliding actuator of the present invention; Figure 3 This is a schematic diagram of the linkage mechanism of the present invention; Figure 4 This is a schematic diagram of the linkage mechanism and the display screen body of the present invention; The meanings of the reference numerals in the attached figures are as follows: 1. Sliding guide; 11. First slot; 12. Second slot; 2. First sliding actuator; 3. Second sliding actuator; 31. Spring ball; 4. Linkage mechanism; 41. First link; 42. Second link; 5. Motor; 51. Worm gear; 52. Helical gear; 6. Take-up reel; 61. First cable; 62. Second cable; 71. First pulley; 72. Second pulley; 73. Third pulley; 74. Fourth pulley; 75. Fifth pulley; 76. Sixth pulley; 77. Seventh pulley; 8. Display screen; 81. Display screen body. Detailed Implementation

[0053] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0054] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0056] See Figure 1 As shown, in the technical solution of the present invention, the transmission device of the vehicle display screen 8 includes two sliding guides 1, two first sliding actuators 2, two second sliding actuators 3, and two linkage mechanisms 4.

[0057] Two sliding guide members 1 are parallel to each other and extend along a first direction. They provide rigid guide tracks for the sliding actuators through a symmetrical double-track layout, constraining the sliding actuators to slide only in a preset direction, ensuring the synchronicity of movement on both sides, and preventing the display screen 8 from shifting. Furthermore, the rigid support of the two sliding guide members 1 can bear the weight of the large screen, improving the overall stability of the mechanism.

[0058] One of the first sliding actuators 2 and the second sliding actuator 3 is slidably disposed on one of the sliding guides 1, and the other first sliding actuator 2 and the second sliding actuator 3 are slidably disposed on the other sliding guide 1. When the second sliding actuator 3 is in the self-locking position, there is resistance between the second sliding actuator 3 and the sliding guide 1. The second sliding actuator 3 remains stationary or maintains its position relative to the sliding guide 1 due to the resistance, ensuring that at least one link of the linkage mechanism 4 can rotate around the first sliding actuator 2 when it slides. After the first sliding actuator 2 slides to contact the second sliding actuator 3, the second sliding actuator 3 overcomes the resistance and achieves translation. The switching of the action phase can be achieved by utilizing the resistance.

[0059] One end of the linkage mechanism 4 is hinged to the first sliding actuator 2, and the other end is hinged to the second sliding actuator 3. The two linkage mechanisms 4 are used to set the display screen 8. Two kinds of movements can be realized by driving the first sliding actuator 2: when the first sliding actuator 2 slides alone, the linkage mechanism 4 rotates to complete the flipping of the display screen 8; when the two sliding actuators move together, the linkage mechanism 4 translates with the sliding actuator to realize the position adjustment of the display screen 8.

[0060] The transmission device of the vehicle display screen 8 also includes a drive mechanism, which drives the first sliding actuator 2 to slide on the sliding guide 1. Specifically, when the first sliding actuator 2 and the second sliding actuator 3 are not in contact, the drive mechanism can drive the first sliding actuator 2 to slide towards or away from the second sliding actuator 3, while the second sliding actuator 3 remains in place under a first resistance, and the linkage mechanism 4 rotates to cause the display screen 8 to flip. When the first sliding actuator 2 and the second sliding actuator 3 are in contact, the drive mechanism can drive the first sliding actuator 2 and the second sliding actuator 3 to slide simultaneously in a first direction, causing the display screen 8 to perform a translational movement.

[0061] Optionally, the sliding guide 1 described in this application can be a slide rail, slide rod, guide rail, slide groove, or other structure; the first sliding actuator 2 and the second sliding actuator 3 can be a slider, slide table, slide plate, or other structure that can slide and cooperate with the sliding guide 1.

[0062] Specifically, based on the above structural design, the movement process of the vehicle-mounted display screen 8 transmission device of the present invention can be divided into at least the following two stages: The first sliding actuator 2 and the second sliding actuator 3 are not in contact, and the second sliding actuator 3 is in a self-locking position, where there is resistance between the second sliding actuator 3 and the sliding guide 1. When the drive mechanism is working, it can drive the first sliding actuator 2 to slide towards or away from the second sliding actuator 3. The second sliding actuator 3 remains unchanged under the action of resistance, thereby causing the linkage mechanism 4 between the first sliding actuator 2 and the second sliding actuator 3 to rotate, which in turn causes the display screen 8 mounted on the linkage mechanism 4 to flip.

[0063] More specifically, the aforementioned flipping action can be divided into a flipping-to-open action and a flipping-to-close action, depending on the direction of the flipping. Furthermore, the flipping angle of the display screen 8 can be adjusted according to the moving distance of the second sliding actuator 3, thereby meeting the viewing needs of different angles.

[0064] When the first sliding actuator 2 slides to contact the second sliding actuator 3, the display screen 8 flips open to the position. At this time, if the drive mechanism continues to drive the first sliding actuator 2, it can push the second sliding actuator 3 or drive the second sliding actuator 3 to slide simultaneously in the first direction through the lever mechanism. During this process, since the first sliding actuator 2 and the second sliding actuator 3 keep moving synchronously, the linkage mechanism 4 between them does not rotate, but only moves synchronously with the two sliding actuators, thereby causing the display screen 8 installed on the linkage mechanism 4 to perform a translational movement in the first direction.

[0065] Based on this, the position of the display screen 8 can be adjusted forward and backward or left and right after it is opened (depending on the installation direction of the display screen 8), so as to meet the viewing needs of customers with different car seats and different heights.

[0066] Therefore, this invention achieves coordinated flipping and translational movements through a single drive source. Under the action of the drive mechanism, and through the cooperation of two sliding actuators and a double linkage mechanism 4, when the first sliding actuator 2 and the second sliding actuator 3 are not in contact, the linkage mechanism 4 rotates independently to flip the display screen 8; when the first sliding actuator 2 contacts the second sliding actuator 3, the linkage mechanism 4 translates to complete the translational movement of the display screen 8. This design replaces the traditional multi-motor 5 independent drive scheme, achieving precise control of two-dimensional motion by a single drive source through the timing coordination of mechanical structures. This simplifies the overall architecture of the drive system, ensures the coordination of the two movements, and allows for flexible adjustment of viewing distance and viewing angle to meet the needs of customers with different seating positions and heights.

[0067] Furthermore, by relying on the mechanical switching of the contact state between the first sliding actuator 2 and the second sliding actuator 3, seamless connection between flipping and translational movements is achieved. During the flipping phase, the force balance is formed by the individual sliding of the first sliding actuator 2 and the initial resistance of the second sliding actuator 3, ensuring accurate flipping angle. During the translational phase, the two sliding actuators move synchronously, and the linkage mechanism 4 no longer rotates, avoiding jamming and deviation. The overall movement is self-constrained by each mechanical structure, with a controllable and smooth trajectory, meeting the continuous adjustment needs of different angles and distances. In addition, the single-motor 5 drive scheme significantly reduces space occupation, and the compact combination of double sliding guide 1-double sliding actuator-double linkage is suitable for the confined environment inside the vehicle. The modular structure facilitates assembly, disassembly, and maintenance, saves on the hardware cost of the motor 5, and eliminates the need for complex multi-motor 5 collaborative control algorithms, reducing software development costs. It also reduces the risk of interference with other components in the vehicle, making it feasible to install large displays such as 30 inches.

[0068] Ultimately, this invention precisely covers diverse scenarios through a wide range of adjustable flip angles (at least 0-90°) and translation distances. The viewing distance can be adjusted for users in different vehicle seats, and the eye level can be matched to different height groups. Combined with a large-screen design, it not only meets the visual needs of large sizes but also eliminates the distance adaptation problem, solving the limitations of traditional fixed screens or single-action screens in multiple vehicle scenarios.

[0069] See Figure 1 As shown, in a preferred embodiment, when the first sliding actuator 2 slides towards the second sliding actuator 3, the linkage mechanism 4 drives the display screen 8 to perform an opening and flipping action. Conversely, when the first sliding actuator 2 slides away from the second sliding actuator 3, the linkage mechanism 4 drives the display screen 8 to perform a closing and flipping action.

[0070] Specifically, the sliding direction of the first sliding actuator 2 establishes a precise correspondence with the screen opening / closing flip action, forming a closed loop of mechanical action logic. When the first sliding actuator 2 approaches the second sliding actuator 3, the linkage mechanism 4 is driven to retract, causing the display screen 8 to complete the screen opening flip. The flipping action progresses gradually with the displacement of the sliding actuator and can stop at any angle between 0° and 90° as needed. When the first sliding actuator 2 moves away from the second sliding actuator 3, the linkage mechanism 4 simultaneously unfolds, driving the display screen 8 to perform the screen closing flip, ensuring that the screen accurately returns to its initial stored state. At the same time, the screen opening / closing action is linearly related to the movement of the first sliding actuator 2, and the flipping process is smooth and shock-free. This ensures the accuracy of the viewing angle when the screen is open and improves the space storage efficiency when the screen is closed, further enhancing the stability of the mechanism's operation.

[0071] Example 1 In a preferred embodiment of the present invention, a specific structural design scheme for the linkage mechanism 4 is provided.

[0072] See Figure 3 and Figure 4 As shown, in this embodiment, the linkage mechanism 4 includes a first link 41 and a second link 42. One end of the first link 41 and one end of the second link 42 are hinged together, and the other end of the first link 41 is hinged to the first sliding actuator 2. The other end of the second link 42 is hinged to the second sliding actuator 3. The display screen 8 is positioned between the two first links 41.

[0073] In the above scheme, the linkage mechanism 4 forms a three-hinge-point closed-loop structure through the hinge design of the first link 41 and the second link 42. The two ends of the first link 41 and the second link 42 are respectively rotatably connected to the first sliding actuator 2 and the second sliding actuator 3. The display screen 8 is stably mounted between the two linkage mechanisms 4, forming a mechanically balanced load-bearing system. The two-link, three-hinge-point design gives the linkage mechanism 4 multi-degree-of-freedom motion characteristics, so that the flipping action of the display screen 8 strictly follows the preset arc trajectory, and at the same time forms a precise mechanical coupling with the linear sliding of the first sliding actuator 2. When the first sliding actuator 2 translates along the sliding guide 1, the link automatically changes the direction of motion through the hinge point rotation, which not only ensures the coordination of the ratio of the flipping angle to the translation distance, but also completely avoids the mutual interference of the two actions.

[0074] Preferably, the display screen 8 is disposed on the first link 41 near the first sliding actuator 2.

[0075] See Figure 3 and Figure 4 As shown, in a preferred embodiment, when the first sliding actuator 2 slides toward or away from the second sliding actuator 3, the first link 41 and the second link 42 rotate relative to each other, thereby causing the display screen 8 to flip.

[0076] Specifically, when the first sliding actuator 2 approaches or moves away from the second sliding actuator 3, it directly pulls the two connecting rods to rotate relative to each other, forming a precise transmission relationship of mechanical coupling. This transmission makes the flip angle of the display screen 8 strictly linearly related to the displacement of the first sliding actuator 2. For every fixed distance the sliding actuator moves, the screen flips by the corresponding angle proportionally, thereby achieving continuous stepless adjustment from 0 to 90°.

[0077] Based on this, whether it's the low line of sight for children in the back, the eye-level angle for adults, or the upward angle needed for temporary viewing in the front, all can be precisely matched through the subtle movements of the sliding actuators. This linear mechanical transmission requires no electronic calibration, ensuring both intuitive adjustment and precise coverage of the line of sight angles for users of different heights and in different seats.

[0078] Example 2 In another preferred embodiment of the present invention, a specific structural design scheme for two first sliding actuators 2 and two second sliding actuators 3 on a sliding guide 1 is provided.

[0079] See Figure 1 As shown, in the technical solution of this embodiment, in any state, the positions of the two first sliding actuators 2 in the first direction of the two sliding guides 1 correspond to each other, and the positions of the two second sliding actuators 3 in the first direction of the two sliding guides 1 correspond to each other. That is, the positions of the two first sliding actuators 2 and the two second sliding actuators 3 on the two sliding guides 1 correspond to each other respectively.

[0080] In the above scheme, the highly symmetrical design of the first sliding actuator 2 and the second sliding actuator 3 on the dual sliding guide 1 ensures uniform force distribution on both sides of the display screen 8 from the source. During static installation, screen tilting or structural distortion caused by height differences can be completely avoided, ensuring the accuracy of initial assembly. During dynamic operation, whether the display screen 8 is flipping or translating, the symmetrical structure ensures that the force state of the linkage mechanism 4 on both sides is completely consistent, greatly reducing the risk of local mechanical stress concentration. The above design not only enhances the load-bearing stability of the large-size display screen 8, but also improves the consistency and accuracy of the motion trajectory through symmetrical constraints, effectively reducing problems such as jamming and offset, and ensuring the structural reliability and smooth operation of the mechanism in all scenarios from static assembly to dynamic operation.

[0081] Further, see Figure 3 and Figure 4 As shown, the driving mechanism drives the two first sliding actuators 2 to slide at the same speed on the sliding guide 1.

[0082] By setting the two first sliding actuators 2 to slide at equal speeds, the speeds of the first sliding actuator 2 sliding alone and the first sliding actuator 2 driving the second sliding actuator 3 to slide are equal, thereby achieving complete synchronization of the movement on both sides of the display screen 8. This avoids unilateral overload or trajectory deviation caused by speed difference, ensuring that the screen remains stable during flipping and translation, and further improving the reliability of the operation of the display screen 8.

[0083] Example 3 In another preferred embodiment of the present invention, a specific structural design scheme is provided regarding how to enable the display screen 8 to achieve multi-level resistance nodes at different positions during translation.

[0084] See Figure 1 and Figure 2As shown, in this embodiment, the self-locking position is provided with a slot, and the second sliding actuator 3 is provided with a spring ball 31. When the second sliding actuator 3 is in the self-locking position, the spring ball 31 is engaged in the slot, so that there is resistance between the second sliding actuator 3 and the sliding guide 1. The spring ball 31 includes a spring or spring buffer structure disposed inside the sliding actuator and a ball that abuts against the spring or spring buffer structure. Part of the ball's structure is exposed on the outside of the second sliding actuator 3.

[0085] In the above scheme, the physical engagement of the spring ball 31 and the slot forms a reliable mechanical locking structure: when the spring ball 31 is engaged in the slot, the cooperation between the two provides a stable and controllable resistance to the self-locking position. This resistance constraint precisely defines the action logic—when the first sliding actuator 2 and the second sliding actuator 3 are not in contact, the second sliding actuator 3 is firmly fixed due to the resistance, and only the first sliding actuator 2 can slide independently along the sliding guide 1, providing a stable reference support for the flipping action of the display screen 8, ensuring that there will be no deviation due to the accidental displacement of the second sliding actuator 3 during the flipping angle adjustment. When the first sliding actuator 2 slides to contact the second sliding actuator 3 and continuously applies a pushing force, or when the first sliding actuator 2 applies a pulling force to the second sliding actuator 3 through the pull rod mechanism, the spring buffer structure is compressed and deformed, the spring ball 31 smoothly disengages from the slot, the resistance disappears instantly, and a mechanical trigger-type switch from flipping to translational movement is realized.

[0086] During this process, the elastic buffer design of the spring ball 31 can effectively resolve the rigid collision when the slot and the ball come into contact, significantly reduce the instantaneous impact force, avoid component wear during long-term use, extend the service life of the mechanism, and take into account both the accuracy of the action and the durability of the structure.

[0087] See Figure 1 As shown, in a preferred embodiment, the self-locking position includes an initial self-locking position and several stage self-locking positions; when the second sliding actuator 3 is in the initial self-locking position, there is a first resistance between the second sliding actuator 3 and the sliding guide 1; when the second sliding actuator 3 is in the stage self-locking position, there is a second resistance between the second sliding actuator 3 and the sliding guide 1; the hinge of the linkage mechanism 4 has rotational resistance, which is less than the first resistance and greater than the second resistance.

[0088] In the above preferred scheme, by precisely designing the rotational resistance, the first resistance, and the second resistance in a hierarchical manner, a purely mechanical motion stage control logic can be constructed, achieving orderly switching between the flipping and translation processes. The resistance relationship among the three is clear: the rotational resistance at the linkage joint is less than the first resistance experienced by the second sliding actuator 3, but greater than the first resistance experienced by the second sliding actuator 3. Specifically, as follows: When the first sliding actuator 2 and the second sliding actuator 3 are not in contact, this resistance level plays a crucial role. When the first sliding actuator 2 is driven to slide, due to the smaller rotational resistance, the linkage mechanism 4 will preferentially rotate around the hinge point, driving the display screen 8 to complete the flipping action; while the second sliding actuator 3, due to the greater first resistance, always remains stationary, providing a stable reference for the flipping, ensuring that the flipping angle is precise and controllable, and the process is smooth and without shaking.

[0089] When the first sliding actuator 2 and the second sliding actuator 3 come into contact, the system automatically switches to the translational movement stage. The first sliding actuator 2 pushes the second sliding actuator 3 to translate sequentially along a preset direction to the subsequent self-locking position. When moving in the opposite direction, since the second resistance provided by the initial self-locking position is less than the rotational resistance of the linkage mechanism 4, the linkage mechanism 4 maintains a fixed posture due to the greater rotational resistance, thus avoiding accidental flipping. Therefore, the first sliding actuator 2 pulls the second sliding actuator 3 back through the linkage mechanism 4 until the second sliding actuator 3 returns to the initial self-locking position. At this time, the second sliding actuator 3 is again subjected to the first resistance and remains stationary, while the first sliding actuator 2 continues to move. The linkage mechanism 4 rotates to realize the flipping action of the display screen 8.

[0090] The aforementioned resistance grading design requires no intervention from electronic sensors or control algorithms. It not only strictly distinguishes the action boundaries between flipping and translation, but also eliminates action interference during stage switching, greatly improving the reliability and accuracy of the mechanism's operation and ensuring smooth and uninterrupted action throughout the entire process.

[0091] See Figure 1 As shown, in another preferred embodiment, the initial self-locking position is provided with a first slot 11, the stage self-locking position is provided with a second slot 12, and the second sliding actuator 3 is provided with a spring ball 31; when the second sliding actuator 3 is in the initial self-locking position, the spring ball 31 is engaged in the first slot 11, so that there is a first resistance between the second sliding actuator 3 and the sliding guide 1; when the second sliding actuator 3 is in the stage self-locking position, the spring ball 31 is engaged in the second slot 12, so that there is a second resistance between the second sliding actuator 3 and the sliding guide 1.

[0092] In the aforementioned preferred embodiment, the spring ball 31 forms a mechanical lock when it engages with the first slot 11. Through the physical cooperation between the two, a stable and controllable first resistance is provided for the initial state. The several second slots 12 on the sliding guide 1 and the spring ball 31 of the second sliding actuator 3 form a multi-level positioning structure with precise engagement. Its core function is to achieve segmented locking on the translational path and self-locking upon reaching the desired position through physical engagement. When the spring ball 31 slides with the second sliding actuator 3 to different positions of the second slot 12, the engagement relationship between the two generates a stable second resistance, precisely fixing the display screen 8 in a preset position. This design can cover the full range of adjustment needs from the front to the rear seats of the vehicle. For example, whether it is a 1.5-meter-tall child or a 1.9-meter-tall adult, they can find the optimal viewing distance by switching gears, completely solving the pain point of traditional fixed screens being unable to be adjusted.

[0093] In vehicle driving scenarios, the aforementioned mechanical locking structure exhibits significant advantages: even when traversing bumpy roads, the tight engagement of the spring ball 31 with the first slot 11 and the second slot 12 effectively suppresses the displacement and jitter of the display screen 8, ensuring that the positioning stability guarantees a consistently clear and stable image on the display screen 8. Compared to the non-positioning mode of continuous sliding, this solution's multi-level resistance nodes provide clear mechanical feedback (such as a "click" sound and tactile changes) to indicate to the user that gear shifting is complete, eliminating the need for electronic sensors or control systems throughout the process. This not only reduces operational complexity but also minimizes the risk of positioning failure due to circuit malfunctions to zero.

[0094] In addition, the spring ball 31, together with the first slot 11 and multiple second slots 12, forms a complete mechanical constraint system of "initial lock - multi-level translation positioning". The mechanical control is realized throughout the entire process from flipping start to translation position. This not only improves the adaptability of the mechanism to diverse scenarios, but also optimizes the user experience through intuitive operation feedback, providing reliable structural support for the flexible adjustment of the vehicle screen.

[0095] Furthermore, see Figure 1 As shown, the depth of the second slot 12 is less than the depth of the first slot 11. Specifically, the essence of this design is to construct a precise resistance grading system through the difference in physical dimensions. Because the first slot 11 is deeper, it can form a stronger mechanical engagement with the spring ball 31, providing stable and sufficient first resistance. This ensures that the second sliding actuator 3 will not be accidentally moved due to external forces such as vehicle bumps during the flipping phase, providing a reliable benchmark for the flipping action. The second slot 12 is shallower, and the engagement force is weakened accordingly, so the second resistance is naturally less than the first resistance. This satisfies the positioning requirements during translation and reduces the operational effort required for gear shifting. This structural difference can achieve resistance grading through mechanical characteristics without additional control components, ensuring clear action boundaries during the flipping and translation phases and improving the reliability of the mechanism's operation.

[0096] Optionally, the rotational resistance is the preload at the hinge of the linkage mechanism 4 (e.g., the preload at the hinge of the first link 41 and the second link 42). Specifically, the solution of providing rotational resistance with the preload at the hinge requires no additional components. The resistance value can be flexibly set by adjusting the bolt tightness, interference fit, etc., to adapt to the weight requirements of different sized displays 8. The structure is extremely simple and low-cost, and can be quickly calibrated during assembly.

[0097] Optionally, the linkage mechanism 4 is provided with a friction damping structure at the hinge (e.g., a friction damping structure installed at the hinge of the first link 41 and the second link 42) to give the linkage mechanism 4 rotational resistance. Specifically, the scheme using a friction damping structure provides stable resistance through dedicated damping components (such as friction plates or damping rings). Its damping coefficient is less affected by temperature and vibration, has a low performance degradation rate after long-term use, can maintain the consistency of rotational resistance, and can maintain smooth rotation during the flipping phase and attitude locking during the translation phase for a long time.

[0098] Overall, both of the above-mentioned options can accurately match the resistance grading requirements, ensuring the orderly switching between the flipping and translation stages of the display screen 8. This avoids interference with the movement and improves the stability and durability of the mechanism, providing flexible and adaptable technical options for different usage scenarios.

[0099] Specifically, the friction damping structure at the hinge of linkage mechanism 4 provides stable and controllable rotational resistance. After precise adjustment, its damping coefficient can be strictly matched with the mechanical requirements of different stages of flipping and translation, thereby ensuring that the linkage mechanism 4 rotates smoothly without jamming during the flipping stage and can firmly lock the posture without deviation during the translation stage. Even with long-term high-frequency use, it can still maintain the initial resistance accuracy, providing continuous and stable mechanical support for the orderly switching of action stages and further enhancing the reliability of mechanism operation.

[0100] It is worth mentioning that, compared to elastic elements, the resistance value of friction damping structures is minimally affected by the environment and usage time, and will not decrease or fluctuate due to cumulative deformation, thus having a significant advantage.

[0101] See Figure 1 As shown, in another preferred embodiment, the number of second slots 12 on any sliding guide 1 is at least three, and they are arranged sequentially at intervals along the first direction. By providing multiple second slots 12, a multi-level translational positioning system covering near to far distances can be constructed, solving the limitation on viewing distance adaptation caused by insufficient positioning points, and meeting the full range of adjustment needs from easily accessible front rows to comfortable viewing in the rear rows.

[0102] Optionally, the spacing of the second slot 12 is set to be equal.

[0103] When the spacing of the second slots 12 is equal, a uniform gradient adjustment mode can be formed, allowing users to predict the movement position of the display screen 8 based on linear logic. For example, each 15cm slide corresponds to a different adjustment level, making the operation intuitive and easy to learn, especially suitable for scenarios requiring consistent adjustment precision.

[0104] Optionally, the spacing of the second slot 12 can be set to be unequal.

[0105] When the spacing of the second card slot 12 is unequal, it can be arranged differently according to the frequency of use. For example, the card slots can be densely arranged in high-frequency scenarios such as regular sitting posture in the back row and temporary movie watching in the front row (e.g., one every 10cm), and sparsely arranged in low-frequency areas such as the edges (e.g., one every 20cm). This ensures that the adjustment of commonly used positions is accurate, while avoiding redundant positioning points that increase the complexity of operation. This allows for precise matching of the diverse needs of different users, improving adjustment efficiency and experience.

[0106] Example 4 In another preferred embodiment of the present invention, a specific structural design scheme for the drive mechanism is provided.

[0107] See Figure 1 As shown, in this embodiment, the driving mechanism further includes an execution mechanism, which comprises a cable and multiple pulleys. The cable passes sequentially through the multiple pulleys and is fixedly connected to two first sliding actuators 2. The driving mechanism is used to drive the two first sliding actuators 2 to slide synchronously on the sliding guide 1 via the execution mechanism.

[0108] Specifically, the drive mechanism also includes a take-up reel 6, and the cables include a first cable 61 and a second cable 62. The take-up reel 6 is wound with the outwardly extending first cable 61. One end of the first cable 61 passes through several pulleys and connects to one of the first sliding actuators 2, while the other end of the first cable 61 passes through several pulleys and connects to another first sliding actuator 2. One end of the second cable 62 is connected to one of the first sliding actuators 2, and after passing through several pulleys, the other end connects to the other first sliding actuator 2. During operation, rotating the take-up reel 6 causes the two first sliding actuators 2 to slide synchronously on the sliding guide 1.

[0109] In the above scheme, the drive mechanism adopts a take-up reel 6 drive design, which, combined with the actuator, constructs a high-efficiency cable transmission system to synchronously drive the two first sliding actuators. When the take-up reel 6 rotates, the first cable 61, guided by a pulley, pulls one of the first sliding actuators along the sliding guide 1. This first sliding actuator 2 then pulls the other first sliding actuator 2 synchronously through the second cable 62, and under the guidance of the pulley, the two first sliding actuators 2 slide in the same direction. Therefore, the steering action of the pulley can flexibly adjust the cable path according to the narrow space of the vehicle, avoiding interference with the vehicle's internal piping and body frame, and can evenly distribute the tension, preventing unilateral overload, ensuring that the sliding speed of the two sliding actuators is strictly consistent, fundamentally guaranteeing the symmetry of the flip angle and translation distance, and eliminating the risk of display screen tilting.

[0110] Furthermore, compared to rigid transmission methods such as gears and lead screws, the cable-pulley transmission adopted in this solution has the following advantages: significantly reduced structural weight, and flexible layout following the direction of the sliding guide 1 (i.e., the first direction); combined with a single motor drive, it can convert the rotational motion output by the motor into linear displacement of the two sliding actuators, achieving millimeter-level adjustment accuracy; during the transmission process, the rolling friction between the two cables and the pulleys replaces rigid meshing, significantly reducing friction loss and significantly improving transmission efficiency. Therefore, the cable transmission system and the single motor solution work synergistically, reducing space occupation while enhancing the linear controllability of displacement adjustment, and greatly improving the reliability and adaptability of the overall mechanism in a vehicle environment.

[0111] See Figure 1 As shown, in a preferred embodiment, the pulleys include a first pulley 71, a second pulley 72, a third pulley 73, a fourth pulley 74, a fifth pulley 75, and a sixth pulley 76. One end of a first cable 61 is connected to one of the first sliding actuators 2 after passing through the first pulley 71, and the other end of the first cable 61 is connected to another first sliding actuator 2 after passing through the second pulley 72 and the third pulley 73. One end of a second cable 62 is connected to one of the first sliding actuators 2, and after passing through the fourth pulley 74, the fifth pulley 75, and the sixth pulley 76, it is connected to another first sliding actuator 2.

[0112] In the above scheme, a high-precision synchronous transmission system is constructed through a closed cable design, achieving equal-volume driving of the two first sliding actuators 2. Specifically, the first pulley 71, the fifth pulley 75, and the fourth pulley 74 are preferably distributed on both sides of one of the sliding guides 1, and the second pulley 72, the sixth pulley 76, and the third pulley 73 are preferably distributed on both sides of the other sliding guide 1.

[0113] In actual operation, the take-up reel 6 rotates, and the first cable 61, guided by the first pulley 71, pulls one of the first sliding actuators 2 to slide along the sliding guide 1. The first sliding actuator 2 then pulls the other first sliding actuator 2 to move synchronously through the second cable 62. Under the guidance of the fourth pulley 74, the fifth pulley 75, and the sixth pulley 76, the two first sliding actuators slide in the same direction.

[0114] Meanwhile, the precise guidance of the pulleys ensures that the transmission direction of the cable closely matches the direction of the sliding guide 1, cleverly avoiding components such as pipes and trim panels inside the vehicle. This significantly reduces frictional interference between the cable and surrounding structures, lowers energy loss, and improves drive efficiency. The closed cable design forms a ring transmission through fixed ends, maintaining tension at all times and eliminating the risk of loosening or slipping. This layout is well-suited to the confined space inside the vehicle. By optimizing the cable path through multi-directional pulley steering, millisecond-level coordinated action of the two sliding actuators can be achieved without additional synchronization mechanisms such as gear meshing. This not only eliminates complex transmission components and reduces manufacturing costs but also forms a highly efficient linkage with the single-motor drive scheme, enhancing the overall mechanism's operational stability and environmental adaptability from both structural simplification and power synergy perspectives.

[0115] In one alternative configuration, the first pulley 71 and the fifth pulley 75 can be located on the same side and have the same center of rotation; the second pulley 72 and the sixth pulley 76 can also be located on the same side and have the same center of rotation. Examples include an embedded pulley structure (a large pulley contains a smaller pulley, both with the same center of rotation, but their rotational movements do not interfere with each other), or a staggered pulley structure (pulleys can be of equal or unequal size, arranged alternately, both with the same center of rotation, but their rotational movements do not interfere with each other).

[0116] In a preferred embodiment, the pulley further includes a seventh pulley 77, through which the first cable 61 and / or the second cable 62 pass, and the seventh pulley 66 is used to adjust the tension of the first cable 61 and / or the second cable 62.

[0117] See Figure 1 As shown, in another preferred embodiment, the drive mechanism further includes a motor 5 and a helical gear 52. The output end of the motor 5 is connected to a worm gear 51, which meshes with the helical gear 52. The helical gear 52 is fixedly connected to the take-up reel 6.

[0118] In the above scheme, the drive mechanism adopts a multi-stage drive combination of motor 5-worm gear 51-helical gear 52, forming a highly efficient and coordinated drive chain with the take-up reel 6-cable transmission system, achieving enhanced stability across the entire link from power output to the execution end. The meshing structure of worm gear 51 and helical gear 52 has a built-in mechanical self-locking characteristic—when motor 5 stops driving, the static friction of the meshing tooth surfaces can completely offset external forces (such as the impact of vehicle bumps or the reverse torque caused by the weight of the display screen 8), preventing the take-up reel 6 from unexpectedly rotating in the opposite direction. This ensures that the sliding actuator can be firmly locked in any position, and even when traversing rough terrain, the display screen 8 will not shift, demonstrating high reliability in position locking.

[0119] Meanwhile, the worm gear 51-helical gear 52 transmission can achieve a large reduction ratio, which can accurately convert the high-speed rotation of the motor 5 into the low-speed rotation of the take-up reel 6. Combined with the linear transmission characteristics of the cable, it significantly improves the displacement control accuracy of the sliding actuator and the flip angle accuracy of the display screen 8, allowing users to find the most comfortable viewing angle within the 0-90° flip range and full-stroke translation, thus improving the overall operational stability and adjustment fineness of the mechanism.

[0120] The following is attached Figure 1 Taking the shown perspective as an example, the working process and principle of the transmission device of the vehicle display screen 8 of the present invention are introduced: First, the motor 5 is started. The motor 5 drives the helical gear 52 to rotate through the worm gear 51 at its output end, which in turn drives the take-up reel 6 to rotate counterclockwise. Correspondingly, the take-up reel 6 pulls the first sliding actuator 2 on the left side along the first sliding guide 1 on the left side through the first pull cable 61 on the left side. The first pull cable 61 on the right side is retracted to the take-up reel 6. The first sliding guide 1 drives the first sliding guide 1 on the right side to move upward synchronously through the second pull cable 62.

[0121] At this time, the first sliding actuator 2 and the second sliding actuator 3 are not in contact. The second sliding actuator 3 is in the initial self-locking position and its position remains unchanged. The movement of the first sliding actuator 2 causes the linkage mechanism 4 to rotate, which in turn drives the display screen 8 mounted on the linkage mechanism 4 to perform a preset direction flipping action (a flipping and opening action). When the first sliding actuator 2 slides to contact the second sliding actuator 3, the display screen 8 flips and opens to the correct position. If the take-up reel 6 continues to rotate counterclockwise, it can push the second sliding actuator 3 to slide upward simultaneously through the first sliding actuator 2. During this process, since the first sliding actuator 2 and the second sliding actuator 3 are in close contact with each other, the linkage mechanism 4 between them does not rotate and is in a fully retracted state. The linkage mechanism 4 only moves synchronously with the two sliding actuators, thereby driving the display screen 8 mounted on the linkage mechanism 4 to perform an upward translational action until the first sliding actuator 2 and the second sliding actuator 3 move to the uppermost stage self-locking position.

[0122] The motor 5 is started in reverse. The motor 5 drives the helical gear 52 to rotate through the worm gear 51 at its output end, which in turn drives the take-up reel 6 to rotate clockwise. Correspondingly, the take-up reel 6 pulls the first sliding actuator 2 on the right side along the first sliding guide 1 on the right side through the first pull cable 61 on the right side. The first pull cable 61 on the left side is retracted to the take-up reel 6. The first sliding guide 1 drives the first sliding guide 1 on the left side to move downward synchronously through the second pull cable 62.

[0123] At this point, the first sliding actuator 2 and the second sliding actuator 3 do not separate (because the rotational resistance is greater than the second resistance). The second sliding actuator 3 leaves the stage self-locking position and slides downward synchronously with the first sliding actuator 2. The display screen 8 maintains its open posture and slides downward synchronously with the two sliding actuators. During this process, the linkage mechanism 4 only moves synchronously with the two sliding actuators, thereby causing the display screen 8 mounted on the linkage mechanism 4 to perform a downward translational movement. Until the second sliding actuator 3 slides to the initial self-locking position, if the take-up reel 6 continues to rotate clockwise, the second sliding actuator 3 will no longer continue to move downward (because the rotational resistance is less than the first resistance), while the first sliding actuator 2 continues to move downward, causing the linkage mechanism 4 to rotate, thereby causing the display screen 8 mounted on the linkage mechanism 4 to perform a preset direction flipping action (a flipping screen-closing action). When the first sliding actuator 2 slides to the maximum distance between the second sliding actuator 3, the display screen 8 flips and closes in place. Preferably, the motor 5, the take-up reel 6, the first pulley 71, the second pulley 72, the third pulley 73, the fourth pulley 74, the fifth pulley 75, and the sixth pulley 76 are all mounted on the mounting base, which is installed inside the vehicle body.

[0124] Example 5 Based on the same design concept, the present invention also provides an embodiment of a display screen 8, which uses the vehicle display screen 8 transmission device of the above embodiment.

[0125] See Figure 4 As shown, in the technical solution of this embodiment, the display screen 8 includes a display screen body 81, which is installed between two linkage mechanisms 4.

[0126] In the above technical solution, the double-link mechanism 4 of the transmission device of the vehicle display screen 8 adopts a symmetrical support structure, which stably supports the display screen body 81 from both sides, and can evenly distribute the stress generated by the weight of the large screen to the sliding guide 1 and sliding actuator on both sides. This stress distribution mode can avoid single-point stress concentration, significantly reduce the risk of structural deformation or component damage caused by excessive local load, and is especially suitable for the rigid support requirements of large-size screens.

[0127] During dynamic operation, the linkage mechanisms 4 on both sides achieve fully synchronized movement through mechanical coupling, ensuring that the display screen 8 maintains a stable posture during flipping, adjustment, and translation. This effectively reduces shaking and offset during vehicle travel or operation, significantly improving the stability of the viewing image. Simultaneously, the dual linkage mechanism 4 forms a modular integrated design with the drive and transmission systems. Each component can be pre-installed independently and quickly assembled, simplifying mass production processes and facilitating component replacement during later maintenance. This further enhances the adaptability of the display screen 8 across different vehicle models and its long-term reliability.

[0128] Example 6 Based on the same design concept, the present invention also provides an embodiment of a vehicle that uses the display screen 8 of the above embodiment.

[0129] In this embodiment, the display screen 8 is installed inside the vehicle.

[0130] In the above technical solution, the display screen 8 is installed inside the vehicle, which can be precisely adapted to the layout of the small space inside the vehicle. The display screen 8 has a two-way adjustment function of flip angle and translation distance, which can specifically meet the viewing needs of passengers in different rows in the front and rear of the vehicle and people of different heights. Whether it is the low viewing angle of children or the comfortable viewing distance of adults, it can be precisely matched through mechanical adjustment.

[0131] Furthermore, the in-vehicle display screen has strong operational stability and no redundant space occupation, which avoids encroaching on the passenger or storage space in the vehicle and does not interfere with driving operation and driving safety. Under the premise of ensuring safety, it effectively improves the practical value of the in-vehicle entertainment system and the comfort of the user experience.

[0132] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A vehicle-mounted display screen transmission device, characterized in that, include: Two sliding guide members are provided, which are parallel to each other and both extend along a first direction. The sliding guide members are provided with several self-locking positions. Two first sliding actuators and two second sliding actuators, wherein one of the first sliding actuators and the second sliding actuator are slidably disposed on one of the sliding guides, and the other of the first sliding actuators and the second sliding actuator are slidably disposed on the other sliding guide; when the second sliding actuator is in the self-locking position, there is resistance between the second sliding actuator and the sliding guide. Two linkage mechanisms, one end of which is hinged to the first sliding actuator and the other end of which is hinged to the second sliding actuator, with a display screen disposed between the two linkage mechanisms; A driving mechanism is used to drive the first sliding actuator to slide on the sliding guide; When the first sliding actuator and the second sliding actuator are not in contact, the driving mechanism can drive the first sliding actuator to move closer to or further away from the second sliding actuator, and the position of the second sliding actuator remains unchanged under the action of the resistance. The linkage mechanism drives the display screen to flip. When the first sliding actuator and the second sliding actuator are in contact, the driving mechanism can drive the first sliding actuator and the second sliding actuator to slide simultaneously in a first direction, so that the display screen performs a translational movement.

2. The vehicle-mounted display screen transmission device according to claim 1, characterized in that, The linkage mechanism includes a first link and a second link. One end of the first link and one end of the second link are hinged together. The other end of the first link is hinged together with the first sliding actuator, and the other end of the second link is hinged together with the second sliding actuator. A display screen is set between the two first links.

3. The vehicle-mounted display screen transmission device according to claim 2, characterized in that, When the first sliding actuator slides toward or away from the second sliding actuator, the first link and the second link rotate relative to each other, thereby causing the display screen to flip.

4. The vehicle-mounted display screen transmission device according to claim 1, characterized in that, When the first sliding actuator slides toward the direction of the second sliding actuator, the linkage mechanism drives the display screen to perform an opening and flipping action; when the first sliding actuator slides away from the second sliding actuator, the linkage mechanism drives the display screen to perform a closing and flipping action.

5. The vehicle-mounted display screen transmission device according to claim 1, characterized in that, In any state, the positions of the two first sliding actuators correspond to those of the two sliding guides in the first direction, and the positions of the two second sliding actuators correspond to those of the two sliding guides in the first direction.

6. The vehicle-mounted display screen transmission device according to claim 5, characterized in that, The driving mechanism drives the two first sliding actuators to slide at equal speeds on the sliding guide.

7. The vehicle-mounted display screen transmission device according to claim 1, characterized in that, The self-locking position is provided with a slot, and the second sliding actuator is provided with a spring ball. When the second sliding actuator is in the self-locking position, the spring ball is engaged in the slot, so that there is resistance between the second sliding actuator and the sliding guide.

8. The vehicle-mounted display screen transmission device according to claim 1, characterized in that, The self-locking position includes an initial self-locking position and several stage self-locking positions; when the second sliding actuator is in the initial self-locking position, there is a first resistance between the second sliding actuator and the sliding guide; when the second sliding actuator is in the stage self-locking position, there is a second resistance between the second sliding actuator and the sliding guide; the hinge of the linkage mechanism has rotational resistance, which is less than the first resistance and greater than the second resistance.

9. The vehicle-mounted display screen transmission device according to claim 8, characterized in that, The initial self-locking position is provided with a first slot, and the stage self-locking position is provided with a second slot. The second sliding actuator is provided with a spring ball. When the second sliding actuator is in the initial self-locking position, the spring ball is engaged in the first slot, so that there is a first resistance between the second sliding actuator and the sliding guide. When the second sliding actuator is in the stage self-locking position, the spring ball is engaged in the second slot, so that there is a second resistance between the second sliding actuator and the sliding guide.

10. The vehicle-mounted display screen transmission device according to claim 9, characterized in that, The depth of the second card slot is less than the depth of the first card slot.

11. The vehicle-mounted display screen transmission device according to claim 8, characterized in that, The rotational resistance is the preload at the hinge of the linkage mechanism; or, the hinge of the linkage mechanism is provided with a friction damping structure so that the linkage mechanism has the rotational resistance.

12. The vehicle-mounted display screen transmission device according to claim 9, characterized in that, On any one of the sliding guide members, the number of the second slots is at least three, and they are arranged sequentially at intervals along the first direction; the spacing between the second slots is equal; or, the spacing between the second slots is unequal.

13. The vehicle-mounted display screen transmission device according to claim 1, characterized in that, The driving mechanism includes an actuator, which includes a cable and multiple pulleys. The cable passes through the multiple pulleys in sequence and is fixedly connected to two first sliding actuators. The driving mechanism is used to drive the two first sliding actuators to slide synchronously on the sliding guide through the actuator.

14. The vehicle-mounted display screen transmission device according to claim 13, characterized in that, The drive mechanism further includes a take-up reel, and the cable includes a first cable and a second cable. The take-up reel is wound with the first cable extending outward. One end of the first cable is connected to one of the first sliding actuators after passing through several pulleys, and the other end of the first cable is connected to another first sliding actuator after passing through several pulleys. One end of the second cable is connected to one of the first sliding actuators, and after passing through several pulleys, the other end is connected to another first sliding actuator. By rotating the take-up reel, the two first sliding actuators can be driven to slide synchronously on the sliding guide.

15. The vehicle-mounted display screen transmission device according to claim 14, characterized in that, The pulleys include a first pulley, a second pulley, a third pulley, a fourth pulley, a fifth pulley, and a sixth pulley. One end of the first cable is connected to one of the first sliding actuators after passing through the first pulley, and the other end of the first cable is connected to another first sliding actuator after passing through the second pulley and the third pulley. One end of the second cable is connected to one of the first sliding actuators, and after passing through the fourth pulley, the fifth pulley, and the sixth pulley, the other end is connected to another first sliding actuator.

16. The vehicle-mounted display screen transmission device according to claim 15, characterized in that, The pulley also includes a seventh pulley, through which the first cable and / or the second cable pass, and the seventh pulley is used to adjust the tension of the first cable and / or the second cable.

17. The vehicle-mounted display screen transmission device according to claim 14, characterized in that, The drive mechanism also includes a motor and a helical gear. The output end of the motor is connected to a worm gear, which meshes with the helical gear. The helical gear is fixedly connected to the take-up reel.

18. A display screen using the vehicle-mounted display screen transmission device according to any one of claims 1-17, characterized in that, The display screen includes a display screen body, which is mounted between the two linkage mechanisms.

19. A vehicle employing the display screen of claim 18, characterized in that, The display screen is installed inside the vehicle.

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