Gravity balancing mechanism for display screen, display screen device, and vehicle

Abstract

A vehicle. The vehicle comprises a display screen device, and the display screen device comprises a gravity balancing mechanism for a display screen. The gravity balancing mechanism for a display screen comprises a first transmission member, a second transmission member and an elastic member. The first transmission member is adapted to be in transmission connection with a display screen and rotate along with the display screen. The second transmission member is in transmission fit with the first transmission member, and the second transmission member is driven by the first transmission member to perform linear motion. The elastic member is connected to the second transmission member and is adapted to abut against a mounting carrier of the display screen, and the second transmission member compresses and releases the elastic member by means of the linear motion of the second transmission member.

Description

Gravity balancing mechanism of display screen, display screen device and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on March 21, 2024, with application number 202420561770.2 and entitled “Gravity balancing mechanism for display screen, display screen device and vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of vehicle technology, and in particular to a gravity balancing mechanism of a display screen, a display screen device, and a vehicle. Background Art

[0004] Currently, to enhance entertainment, some vehicles feature ceiling screens that can rotate relative to the roof, effectively allowing them to be stored. To mitigate the effects of gravity when the screen is opened and closed, some ceiling screens incorporate a gravity-balancing mechanism. For example, gravity-balancing rods are positioned on opposite sides of the screen. However, these structures are complex, heavy, and bulky, impacting the overall weight of the display, hindering its installation and use. Furthermore, they increase roof space usage and cost.

[0005] Public content

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide a gravity balancing mechanism for a display screen, which can save space on the roof of a vehicle.

[0007] The present application further proposes a display screen device.

[0008] The present application further proposes a vehicle.

[0009] According to the gravity balancing mechanism of the display screen of the present application, it includes: a first transmission member, which is suitable for being connected to the display screen and rotating with the display screen; a second transmission member, which is in transmission cooperation with the first transmission member, and the second transmission member performs linear motion under the drive of the first transmission member; and an elastic member, which is connected to the second transmission member and is suitable for abutting against the mounting carrier of the display screen, and the second transmission member compresses and releases the elastic member through its own linear motion.

[0010] According to the display screen gravity balancing mechanism of the present application, a first transmission member is connected to the display screen, and a second transmission member is coupled to the first transmission member. This allows the first and second transmission members to move with the display screen as it rotates. Furthermore, an elastic member is provided between the second transmission member and the display screen. This arrangement allows the elastic member to apply an elastic force to the second transmission member, facilitating the opening and closing of the display screen using the gravity balancing mechanism, thereby saving space on the vehicle roof.

[0011] In some examples of the present application, the second transmission member performs linear motion along a tangent line at a point of engagement with the first transmission member.

[0012] In some examples of the present application, the first transmission member and the second transmission member are coupled to each other through a tooth engagement structure.

[0013] In some examples of the present application, the first transmission member is configured as a gear, the second transmission member is configured as a rack, and the gear and the rack are meshed.

[0014] In some examples of the present application, the gear is constructed with a through hole extending through the gear in an axial direction, and the through hole is used to sleeve a rotating shaft of the display screen.

[0015] In some examples of the present application, a limiting protrusion is provided on one end of the second transmission member facing the elastic member, and the end portion of the elastic member is sleeved on the limiting protrusion.

[0016] In some examples of the present application, the elastic member is configured as a coil spring.

[0017] The display screen device according to the present application is characterized by comprising: a display screen and the above-mentioned gravity balancing mechanism of the display screen, wherein the display screen is adapted to be rotatably mounted on a mounting carrier.

[0018] In some examples of the present application, the display screen device further includes: a mounting structure, wherein the mounting structure is suitable for being mounted on a vehicle roof and serving as the mounting carrier, and the display screen is rotatably mounted on the mounting structure.

[0019] In some examples of the present application, the mounting structure is formed with a mounting cavity and a receiving groove for receiving the display screen, and the gravity balancing mechanism is installed in the mounting cavity.

[0020] In some examples of the present application, the mounting structure includes: a fixing plate, which is suitable for being installed on the roof, and the elastic member abuts against the fixing plate; and a top cover, which is installed on the fixing plate, and the top cover and the fixing plate jointly define the accommodating groove and the mounting cavity, and the top cover is provided with a connecting hole connecting the accommodating groove and the mounting cavity, and the display screen is transmitted and cooperated with the first transmission member through the connecting hole.

[0021] In some examples of the present application, the mounting cavity is arranged around the receiving groove.

[0022] In some examples of the present application, the display screen device further includes: an electromagnetic lock, which is provided on the mounting structure and is used to lock the display screen in a current position.

[0023] In some examples of the present application, the display screen device further includes: a driving mechanism, which is mounted on the mounting carrier and located on one side of the display screen, a rotating shaft being provided on the one side of the display screen, and the driving mechanism being in transmission connection with the rotating shaft to drive the display screen via the rotating shaft.

[0024] In some examples of the present application, the driving mechanism includes: a driving member, which is mounted on the mounting carrier; a transmission assembly, which is in transmission connection with the driving member; and a mounting shaft, which is in transmission connection with the transmission assembly, and the mounting shaft is mounted on the rotating shaft and rotates synchronously with the rotating shaft.

[0025] In some examples of the present application, the transmission assembly includes: an input member, which is arranged on the driving shaft of the driving member; and an output member, which is sleeved on the mounting shaft and is in transmission connection with the input member.

[0026] In some examples of the present application, the input member is an input worm, and the output member is an output worm wheel; the transmission assembly further includes: an intermediate worm wheel, which is engaged with the input worm; and an intermediate worm, which is arranged on the intermediate worm wheel and rotates synchronously with the intermediate worm wheel, and the intermediate worm is engaged with the output worm wheel.

[0027] In some examples of the present application, the driving mechanism further includes: a stop assembly, the mounting shaft is provided with a first stop portion, the stop assembly is sleeved on the mounting shaft, the stop assembly and the first stop portion are spaced apart in the axial direction of the mounting shaft, and the output member is stopped between the first stop portion and the stop assembly.

[0028] In some examples of the present application, the stop assembly includes: a stop member, which is mounted on the mounting shaft; a sleeve, which is sleeved on the mounting shaft and located on the side of the stop member facing the output member, and the sleeve is constructed with a second stop portion that stops the output member; and an elastic pressure member, which is sleeved on the sleeve and fits between the stop member and the second stop portion.

[0029] In some examples of the present application, the elastic pressure member is configured as a compression spring, the stop member is a spring retaining ring, the mounting shaft is provided with a stop groove, and the spring retaining ring is engaged in the stop groove.

[0030] In some examples of the present application, the stop assembly further includes: a first gasket, which is arranged between the elastic pressure member and the stop member.

[0031] In some examples of the present application, the driving mechanism further includes: a plane bearing, which is sleeved on the mounting shaft and located on the side of the output member facing the stop assembly; and a second gasket, which is arranged between the plane bearing and the stop assembly.

[0032] In some examples of the present application, the mounting shaft is spline-matched with the rotating shaft.

[0033] In some examples of the present application, the display screen device also includes: a sensor bracket, the sensor bracket is located on the other side of the display screen so as to be arranged on opposite sides of the display screen with the driving mechanism, the sensor bracket is installed on the rotating shaft on the other side of the display screen; and an angular displacement sensor, the angular displacement sensor is arranged on the sensor bracket, and the angular displacement sensor is used to detect the rotation angle of the display screen.

[0034] The vehicle according to the present application includes: the display screen device described above.

[0035] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] FIG1 is an exploded view of a display screen device;

[0038] FIG2 is a schematic structural diagram of a display screen device at a first angle;

[0039] FIG3 is a partial exploded view of the display screen device;

[0040] FIG4 is a schematic structural diagram of the display screen device at a second angle;

[0041] FIG5 is a partial enlarged view of the display screen device;

[0042] FIG6 is a schematic diagram of the structure of the display screen being fully opened;

[0043] FIG7 is a structural diagram of the display screen opening process;

[0044] FIG8 is a schematic diagram of the structure of a fully closed display screen;

[0045] FIG9 is a schematic block diagram of a vehicle according to an embodiment of the present application.

[0046] Figures: 2000, vehicle; 1000, display screen device; 100, display screen; 110, gravity balancing mechanism of display screen; 121, rotating shaft; 122, rotating shaft; 200, first transmission member; 201, through hole; 300, second transmission member; 310, limiting protrusion; 400, elastic member; 500, mounting structure; 510, mounting cavity; 520, receiving groove; 530, fixing plate; 540, top cover; 541, connecting hole; 600, electromagnetic lock; 700, driving mechanism; 710, driving member; 720 , transmission assembly; 721, input member; 722, output member; 723, intermediate worm gear; 724, intermediate worm; 730, mounting shaft; 731, first stop portion; 732, stop groove; 740, stop assembly; 741, stop member; 742, sleeve; 743, elastic pressure member; 744, first gasket; 745, second stop portion; 750, plane bearing; 760, second gasket; 800, sensor bracket; 900, angular displacement sensor. DETAILED DESCRIPTION

[0047] The following describes in detail embodiments of the present application, and the embodiments described with reference to the accompanying drawings are exemplary.

[0048] The following describes a gravity balancing mechanism 110 of a display screen according to an embodiment of the present application with reference to FIG. 1 to FIG. 8 . The gravity balancing mechanism 110 of a display screen is applied in a vehicle.

[0049] As shown in Figures 1 to 8, the gravity balancing mechanism 110 for a display screen according to the present application includes a first transmission member 200, a second transmission member 300, and an elastic member 400. The first transmission member 200 is adapted to be in transmission connection with the display screen 100, and the first transmission member 200 rotates with the display screen 100. The second transmission member 300 is in transmission cooperation with the first transmission member 200, and the second transmission member 300 performs linear motion under the drive of the first transmission member 200. The elastic member 400 is connected to the second transmission member 300, and the elastic member 400 is adapted to abut against the mounting carrier of the display screen 100. The second transmission member 300 compresses and releases the elastic member 400 through its own linear motion.

[0050] It is understandable that the display screen 100 can be a ceiling screen, that is, a display screen arranged on the roof of a vehicle. The first transmission member 200, the second transmission member 300 and the elastic member 400 constitute the main structure of the gravity balance mechanism 110 of the display screen. The transmission cooperation between the first transmission member 200 and the second transmission member 300 can enable the second transmission member 300 to move through the first transmission member 200 when the display screen 100 rotates, and the movement mode of the second transmission member 300 is linear motion, which refers to the form of motion of an object when it moves along a straight line. The second transmission member 300 compresses and releases the elastic member 400 through its own movement, and the changing direction of the elastic member 400 is the movement direction of the second transmission member 300, so that the two do not need to change the direction of movement. Since the directions of the two are consistent, the stability of the cooperation between the two is higher, and the gravity balance mechanism 110 has good operational reliability and a long service life. Moreover, with such an arrangement, the elastic member 400 can occupy a smaller space, which can make the space occupied by the gravity balancing mechanism 110 smaller, which can be beneficial to the arrangement of the gravity balancing mechanism 110, can further facilitate the arrangement of the display screen 100, and can better utilize the space on the vehicle roof.

[0051] Specifically, when the display screen 100 needs to be opened, the display screen 100 rotates under the combined action of gravity and the driving force. At this time, the first transmission member 200 rotates with the display screen 100, thereby driving the second transmission member 300 to move, thereby applying pressure to the elastic member 400. The elastic member 400 then generates a thrust on the second transmission member 300, thereby causing the first transmission member 200 and the mounting shaft 730 to rotate to generate a force in the opposite direction, thereby balancing gravity during the opening process. Moreover, when closing the display screen 100, the opposite force can be reversed to the second transmission member 300 and then transmitted to the display screen 100 through the first transmission member 200, thereby reducing the difficulty of closing and improving the smoothness of closing the display screen 100.

[0052] In addition, compared with the traditional gravity balance bar structure, the gravity balance mechanism 110 of the display screen of the present application has fewer parts, a simpler layout, and lower cost.

[0053] Therefore, by connecting the first transmission member 200 to the display screen 100, the second transmission member 300 cooperates with the first transmission member 200 for transmission, and arranging the elastic member 400 between the second transmission member 300 and the display screen 100, the elastic member 400 can provide elastic force to the second transmission member 300, thereby facilitating the use of the gravity balancing mechanism 110 to balance the gravity of the display screen 100, and the gravity balancing mechanism 110 has good stability for the display screen 100, occupies little space, and can save space on the roof.

[0054] As shown in Figures 4 and 5, the second transmission member 300 performs linear motion along the tangent of the cooperation point with the first transmission member 200. This arrangement can transmit the rotational force of the first transmission member 200 to the second transmission member 300, and the movement stability of the second transmission member 300 along the tangent of the cooperation point with the first transmission member 200 is better, which can prevent it from deviating from the first transmission member 200 and can perform linear motion continuously and stably.

[0055] In addition, as shown in Figures 4 and 5, the first transmission member 200 and the second transmission member 300 are coupled together through a tooth engagement structure. This arrangement facilitates the transmission cooperation between the first transmission member 200 and the second transmission member 300, and the first transmission member 200 and the second transmission member 300 can be limited to each other through the tooth engagement structure, which can ensure the position stability and transmission stability of the two.

[0056] Alternatively, as shown in Figures 4 and 5 , the first transmission member 200 is configured as a gear, and the second transmission member 300 is configured as a rack, with the gear and rack meshing together. This arrangement facilitates transmission coordination between the first transmission member 200 and the second transmission member 300, and the meshing between the gear and rack is stable, further stabilizing the operation of the gravity balancing mechanism 110. Furthermore, the length of the rack corresponds to its direction of motion.

[0057] Furthermore, as shown in Figures 3 and 5 , the gear is constructed with a through-hole 201 extending axially therethrough. The through-hole 201 is adapted to be fitted over the rotating shaft 121 of the display screen 100. It will be appreciated that the through-hole 201 is provided in the middle of the gear, and can be fitted over the rotating shaft 121 of the display screen 100. This arrangement allows the first transmission member 200 to be fitted over the rotating shaft 121 of the display screen 100, thereby connecting the first transmission member 200 to the rotating shaft 121 of the display screen 100 and facilitating the transmission force from the display screen 100 to the first transmission member 200. The provision of the through-hole 201 allows for better integration of the gear into the display screen 100, resulting in a more compact display screen 100 and its surrounding components.

[0058] In addition, as shown in Figure 3, a limiting protrusion 310 is provided on the end of the second transmission member 300 that faces the elastic member 400, and the end of the elastic member 400 is sleeved on the limiting protrusion 310. In other words, the limiting protrusion 310 is provided on the upper end of the second transmission member 300, which facilitates the sleeved sleeve of the lower end of the elastic member 400 on the limiting protrusion 310. This allows the limiting protrusion 310 to limit the lower end of the elastic member 400, ensuring the stability of the positions of the two, and further allowing the elastic member 400 to provide a stable elastic force on the second transmission member 300. The mounting carrier may also be provided with a protrusion structure similar to the limiting protrusion 310, which is also sleeved and matched with the elastic member 400, thereby further improving the positional reliability of the elastic member 400.

[0059] In particular, as shown in FIG3 , the elastic member 400 is constructed as a coil spring, which has a simple structure, low cost, and is easy to cooperate with the second transmission member 300 and the mounting carrier. The coil spring has the functions of vibration absorption, vibration reduction protection, support adjustment, and force transmission.

[0060] As shown in Figures 1 and 2, the display screen device 1000 according to the present application includes a display screen 100 and a display screen gravity balancing mechanism 110 according to the above embodiments. Display screen 100 is adapted to be rotatably mounted on a mounting carrier. It will be appreciated that display screen 100 and display screen gravity balancing mechanism 110 constitute the main structure of display screen device 1000. Display screen gravity balancing mechanism 110 can control the rotation of display screen 100. Display screen 100 is disposed on the mounting carrier, thereby facilitating the opening and closing of display screen 100 by the driver or passenger.

[0061] In addition, as shown in FIG1 , the display screen device 1000 further includes a mounting structure 500. The mounting structure 500 is suitable for installation on a vehicle roof and serves as a mounting carrier. The display screen 100 is rotatably mounted on the mounting structure 500. That is, the mounting structure 500 is located on the vehicle roof and is fixedly connected to the vehicle roof. The display screen 100 is located within the mounting structure 500 when not in use. The display screen 100 can be rotated relative to the mounting structure 500 when in use, thereby saving space occupied by the display screen 100. The mounting structure 500 can form an integral structure with the display screen 100 and then be installed as a whole on the vehicle roof. This simplifies the installation steps of the display screen 100 and reduces the difficulty of installing the display screen 100. The vehicle roof refers to the roof of the vehicle. Of course, the display screen device 1000 can also omit the mounting structure 500, with the vehicle roof serving as the mounting carrier.

[0062] As shown in FIG1 , the mounting structure 500 is formed with a mounting cavity 510 and a receiving groove 520 for receiving the display screen 100, and the gravity balancing mechanism 110 is mounted in the mounting cavity 510. It is understood that the mounting cavity 510 and the receiving groove 520 are formed inside the mounting structure 500. The mounting cavity 510 can provide a mounting space for the gravity balancing mechanism 110 and limit its position, and the receiving groove 520 can provide a placement space for the display screen 100 and allow the display screen 100 to be opened and closed, thereby saving space occupied by the display screen 100.

[0063] As shown in FIG1 , the mounting structure 500 includes a fixing plate 530 and a top cover 540. The fixing plate 530 is adapted for mounting on a vehicle roof. The elastic member 400 abuts the fixing plate 530, and the top cover 540 is mounted on the fixing plate 530. The top cover 540 and the fixing plate 530 together define a receiving groove 520 and a mounting cavity 510. The top cover 540 is provided with a connecting hole 541 connecting the receiving groove 520 and the mounting cavity 510. The display screen 100 is coupled to the first transmission member 200 through the connecting hole 541. In other words, the fixing plate 530 and the top cover 540 constitute the main structure of the mounting structure 500. The fixing plate 530 is connected to the vehicle roof, thereby securing the mounting structure 500 to the vehicle roof and further strengthening the mounting structure 500. The upper end of the elastic member 400 abuts the fixing plate 530, positioning the elastic member 400 between the fixing plate 530 and the second transmission member 300, thereby facilitating the elastic member 400 to provide an elastic force to the second transmission member 300. The top cover 540 is disposed on the fixing plate 530 , so that a receiving groove 520 and an installation cavity 510 are formed between the top cover 540 and the fixing plate 530 , thereby facilitating installation of the display screen 100 and the gravity balancing mechanism 110 in the installation structure 500 .

[0064] In particular, as shown in Figure 1, the installation cavity 510 is arranged around the accommodating groove 520, so that the accommodating groove 520 can be located in the middle of the installation cavity 510. This arrangement facilitates the installation of the display screen 100 in the accommodating groove 520. The gravity balancing mechanism 110 is located on one side of the display screen 100, and the gravity balancing mechanism 110 is located in the installation cavity 510, so that the gravity balancing mechanism 110 can control the rotation of the display screen 100.

[0065] In addition, as shown in FIG2 , the display screen device 1000 also includes an electromagnetic lock 600 , which is disposed on the mounting structure 500 and is used to lock the display screen 100 in its current position. It will be appreciated that the electromagnetic lock 600 is located on the mounting structure 500 and is stored in the receiving slot 520 when the display screen 100 is not in use. This allows the electromagnetic lock 600 to lock the display screen 100, thereby preventing the display screen 100 from shaking during driving. The electromagnetic lock 600 controls the extension and retraction of the lock tongue through electromagnetic force, thereby locking the display screen 100.

[0066] In addition, as shown in Figures 2 and 3, the display screen device 1000 further includes a driving mechanism 700. The driving mechanism 700 is mounted on the mounting carrier and is located on one side of the display screen 100. A rotating shaft 121 is provided on one side of the display screen 100. The driving mechanism 700 is in driving connection with the rotating shaft 121, thereby driving the display screen 100 via the rotating shaft 121. In other words, the driving mechanism 700 is located within the mounting carrier and is located on one side of the display screen 100. The rotating shaft 121 is provided on the side of the display screen 100 closer to the driving mechanism 700, thereby connecting the driving mechanism 700 and the rotating shaft 121, thereby enabling the driving mechanism 700 to provide driving force to the display screen 100 for rotation.

[0067] As shown in FIG3 , the drive mechanism 700 includes a drive member 710, a transmission assembly 720, and a mounting shaft 730. The drive member 710 is mounted on a mounting carrier, the transmission assembly 720 is in transmission connection with the drive member 710, the mounting shaft 730 is in transmission connection with the transmission assembly 720, the mounting shaft 730 is mounted on the rotating shaft 121, and the mounting shaft 730 rotates synchronously with the rotating shaft 121. It is understood that the drive member 710, the transmission assembly 720, and the mounting shaft 730 constitute the main structure of the drive mechanism 700. The drive member 710 is mounted in the mounting carrier, and the mounting shaft 730 is connected to the rotating shaft 121. This arrangement allows the drive member 710, the transmission assembly 720, the mounting shaft 730, and the rotating shaft 121 to be connected in sequence, so that the driving force of the drive member 710 can be transmitted to the display screen 100 through the transmission assembly 720, the mounting shaft 730, and the rotating shaft 121, thereby causing the display screen 100 to rotate.

[0068] As shown in FIG3 , the transmission assembly 720 includes an input member 721 and an output member 722. The input member 721 is disposed on the drive shaft of the driver 710, and the output member 722 is sleeved on the mounting shaft 730. The output member 722 is in transmission connection with the input member 721. In other words, the input member 721 and the output member 722 constitute the main structure of the transmission assembly 720, enabling a single-stage reduction transmission. The input member 721 is disposed near the driver 710 and is connected to the drive shaft, thereby transmitting the driving force of the driver 710 to the transmission assembly 720. The input member 721 and the output member 722 are connected, and the output member 722 is connected to the mounting shaft 730. This allows the driver 710, the input member 721, the output member 722, and the mounting shaft 730 to be connected, thereby transmitting the driving force of the driver 710 to the mounting shaft 730.

[0069] Specifically, as shown in FIG3 , the input member 721 is an input worm, and the output member 722 is an output worm gear. The transmission assembly 720 further includes an intermediate worm gear 723 and an intermediate worm gear 724. The intermediate worm gear 723 meshes with the input worm, and the intermediate worm gear 724 is disposed on the intermediate worm gear 723 and rotates synchronously with the intermediate worm gear 723. The intermediate worm gear 724 meshes with the output worm gear. It is understood that the input worm gear and the output worm gear can be coupled to facilitate transmission of driving force by the transmission assembly 720. The intermediate worm gear 723 and the intermediate worm gear 724 move synchronously, and the intermediate worm gear 723 is coupled to the input worm, so that the input worm gear, the intermediate worm gear 723, the intermediate worm gear 724, and the output worm gear are sequentially coupled to each other, enabling a two-stage reduction transmission, thereby facilitating transmission of the driving force of the driving member 710 to the mounting shaft 730 via the input worm gear, the intermediate worm gear 723, the intermediate worm gear 724, and the output worm gear.

[0070] 3 , the driving mechanism 700 further includes a stopper assembly 740. The mounting shaft 730 is provided with a first stopper 731. The stopper assembly 740 is sleeved on the mounting shaft 730. The stopper assembly 740 and the first stopper 731 are spaced apart in the axial direction of the mounting shaft 730, and the output member 722 is stopped between the first stopper 731 and the stopper assembly 740. In other words, the first stopper 731 is located on the mounting shaft 730, and the stopper assembly 740 is sleeved on the mounting shaft 730, so that the stopper assembly 740 and the first stopper 731 cooperate with each other in a stopper arrangement. Furthermore, the stopper assembly 740 and the first stopper 731 are spaced apart in the axial direction of the mounting shaft 730, so that the output member 722 is located between the stopper assembly 740 and the first stopper 731. This facilitates the transmission of driving force to the mounting shaft 730 via the output member 722, prevents positional variations of the output member 722, and ensures stable power transmission.

[0071] As shown in Figure 3, the stop assembly 740 includes a stop member 741, a sleeve 742 and an elastic pressure member 743. The stop member 741 is installed on the mounting shaft 730. The sleeve 742 is sleeved on the mounting shaft 730 and is located on the side of the stop member 741 facing the output member 722. The sleeve 742 is constructed with a second stop portion 745 that stops the output member 722. The elastic pressure member 743 is sleeved on the sleeve 742 and cooperates between the stop member 741 and the second stop portion 745. It can be understood that the stopper 741, the sleeve 742 and the elastic pressure member 743 constitute the main structure of the stop assembly 740, and the stopper 741 is sleeved on the mounting shaft 730, so that the stopper 741 can block the components on one side of the display screen 100, and the sleeve 742 is passed through the mounting shaft 730, and a second stop portion 745 is provided on the sleeve 742. This arrangement can make the elastic pressure member 743 located between the stopper 741 and the second stop portion 745, so that the stopper 741 and the second stop portion 745 can limit the elastic pressure member 743, thereby preventing other components on one side of the display screen 100 from falling off.

[0072] Specifically, as shown in FIG3 , the elastic pressure member 743 is constructed as a compression spring, the stopper 741 is a spring retaining ring, and the mounting shaft 730 is provided with a retaining groove 732, into which the spring retaining ring is engaged. In other words, the retaining groove 732 can limit the spring retaining ring, and the compression spring is provided on the spring retaining ring, so that the compression spring can provide an elastic force on the stopper 741, thereby preventing other components on one side of the display screen 100 from falling off.

[0073] 3 , the stopper assembly 740 further includes a first gasket 744, which is disposed between the elastic pressure member 743 and the stopper 741. It is understood that the first gasket 744 is located between the elastic pressure member 743 and the stopper 741, thereby preventing wear between the elastic pressure member 743 and the stopper 741, thereby extending the service life of the stopper assembly 740.

[0074] In addition, as shown in FIG3 , the drive mechanism 700 further includes a planar bearing 750 and a second gasket 760. The planar bearing 750 is sleeved on the mounting shaft 730 and is located on the side of the output member 722 facing the stop assembly 740. The second gasket 760 is disposed between the planar bearing 750 and the stop assembly 740. In other words, the planar bearing 750 is sleeved on the output member 722 and is disposed toward the stop assembly 740, thereby reducing friction between the output member 722 and the stop assembly 740 and extending the service life of the output member 722. The second gasket 760 is located between the planar bearing 750 and the stop assembly 740, thereby reducing friction between the planar bearing 750 and the stop assembly 740 and improving the driving effect of the drive mechanism 700 on the display screen 100.

[0075] In particular, as shown in Figure 3, the mounting shaft 730 is splined with the rotating shaft 121. This arrangement can improve the stress-bearing strength between the mounting shaft 730 and the rotating shaft 121, thereby improving the structural strength between the mounting shaft 730 and the rotating shaft 121, and further improving the structural strength between the driving mechanism 700 and the display screen 100.

[0076] In addition, as shown in FIG3 , display screen device 1000 further includes a sensor bracket 800 and an angular displacement sensor 900. The sensor bracket 800 is located on the other side of the display screen 100, so as to be located on opposite sides of the display screen 100 from the drive mechanism 700. The sensor bracket 800 is mounted on the rotating shaft 122 on the other side of the display screen 100. The angular displacement sensor 900 is disposed on the sensor bracket 800 and is used to detect the rotation angle of the display screen 100. It will be appreciated that the sensor bracket 800 is located away from the drive mechanism 700, thereby allowing the sensor bracket 800 and the drive mechanism 700 to be located on opposite sides of the display screen 100 without interfering with each other. The angular displacement sensor 900 is disposed on the sensor bracket 800, providing a mounting location for the sensor bracket 800, thereby enabling the angular displacement sensor 900 to detect the rotation angle of the display screen 100, thereby facilitating control of the angle of the display screen 100 by the driver or passenger.

[0077] Specifically, when the display screen 100 needs to be opened, the display screen 100 rotates under the combined action of gravity and the installation shaft 730. At this time, the first transmission member 200 rotates along with the installation shaft 730, and then drives the second transmission member 300 to move toward the fixed plate 530, thereby applying pressure to the elastic member 400, and the elastic member 400 then generates a thrust on the second transmission member 300, so that the first transmission member 200 and the installation shaft 730 can rotate to generate a force in the opposite direction, thereby balancing gravity during the opening process.

[0078] The vehicle 2000 according to an embodiment of the present application includes the display screen device 1000 of any of the above embodiments, as shown in Figure 9. The display screen device 1000 configured in this way can use gravity to balance the opening and closing of the display screen 100 and save space on the roof.

[0079] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0080] In the description of the present application, "first feature" and "second feature" may include one or more of the features. In the description of the present application, "plurality" means two or more. In the description of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. In the description of the present application, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0081] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0082] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A gravity balancing mechanism (110) for a display screen (100), characterized in that: include: a first transmission member (200), the first transmission member (200) being adapted to be in transmission connection with the display screen (100) and to rotate along with the display screen (100); A second transmission member (300), wherein the second transmission member (300) is in transmission cooperation with the first transmission member (200), and the second transmission member (300) performs linear motion under the drive of the first transmission member (200); and An elastic member (400) is connected to the second transmission member (300) and is suitable for abutting against a mounting carrier of the display screen (100), wherein the second transmission member (300) compresses and releases the elastic member (400) through its own linear movement.

2. The gravity balancing mechanism (110) of the display screen (100) according to claim 1, characterized in that: The second transmission member (300) performs linear motion along a tangent line at a location where the second transmission member (300) cooperates with the first transmission member (200).

3. The gravity balancing mechanism (110) of a display screen according to claim 1 or 2, characterized in that: The first transmission member (200) and the second transmission member (300) are coupled in transmission via a tooth engagement structure.

4. The gravity balancing mechanism (110) of a display screen (100) according to any one of claims 1 to 3, characterized in that: The first transmission member (200) is configured as a gear, and the second transmission member (300) is configured as a rack, and the gear and the rack are meshed.

5. The gravity balancing mechanism (110) of a display screen according to claim 4, characterized in that: The gear structure is provided with a through hole (201) penetrating along the axial direction of the gear, and the through hole (201) is used for sleeve-mounting the rotating shaft (121) of the display screen (100).

6. The gravity balancing mechanism (110) of a display screen according to any one of claims 1 to 5, characterized in that: A limiting protrusion (310) is provided at one end of the second transmission member (300) facing the elastic member (400), and an end portion of the elastic member (400) is sleeved on the limiting protrusion (310).

7. The gravity balancing mechanism (110) of a display screen according to any one of claims 1 to 6, characterized in that: The elastic member (400) is configured as a coil spring.

8. A display screen device (1000), characterized in that: include: A display screen (100), wherein the display screen (100) is adapted to be rotatably mounted on a mounting carrier; and A gravity balancing mechanism (110) for a display screen according to any one of claims 1 to 7.

9. The display screen device (1000) according to claim 8, characterized in that: Also includes: The mounting structure (500) is suitable for being mounted on a vehicle roof and serving as the mounting carrier, and the display screen (100) is rotatably mounted on the mounting structure (500).

10. The display screen device (1000) according to claim 9, characterized in that: The mounting structure (500) is formed with a mounting cavity (510) and a receiving groove (520) for receiving the display screen (100), and the gravity balancing mechanism (110) is mounted in the mounting cavity (510).

11. The display screen device (1000) according to claim 10, characterized in that: The mounting structure (500) comprises: a fixing plate (530), the fixing plate (530) being suitable for being mounted on the vehicle roof, the elastic member (400) being in contact with the fixing plate (530); and A top cover (540), wherein the top cover (540) is mounted on the fixing plate (530), wherein the top cover (540) and the fixing plate (530) jointly define the receiving groove (520) and the mounting cavity (510), and the top cover (540) is provided with a connecting hole (541) connecting the receiving groove (520) and the mounting cavity (510), and the display screen (100) is coupled to the first transmission member (200) through the connecting hole (541).

12. The display screen device (1000) according to claim 10 or 11, characterized in that: The installation cavity (510) is arranged around the accommodating groove (520).

13. The display screen device (1000) according to any one of claims 9 to 12, characterized in that: Also includes: An electromagnetic lock (600) is provided on the mounting structure (500) and is used to lock the display screen (100) at a current position.

14. The display screen device (1000) according to any one of claims 8 to 13, characterized in that: Also includes: A driving mechanism (700) is installed on the installation carrier and is located on one side of the display screen (100). A rotating shaft (121) is provided on the one side of the display screen (100). The driving mechanism (700) is in transmission connection with the rotating shaft (121) so as to drive the display screen (100) via the rotating shaft (121).

15. The display screen device (1000) according to claim 14, characterized in that: The driving mechanism (700) comprises: a driving member (710), the driving member (710) being mounted on the mounting carrier; a transmission assembly (720), the transmission assembly (720) being in transmission connection with the driving member (710); and A mounting shaft (730) is connected to the transmission assembly (720) in a transmission manner. The mounting shaft (730) is mounted on the rotating shaft (121) and rotates synchronously with the rotating shaft (121).

16. The display screen device (1000) according to claim 15, characterized in that: The transmission assembly (720) comprises: an input member (721), the input member (721) being disposed on a driving shaft of the driving member (710); and An output member (722) is sleeved on the mounting shaft (730), and the output member (722) is transmission-connected to the input member (721).

17. The display screen device (1000) according to claim 16, characterized in that: The input member (721) is an input worm, and the output member (722) is an output worm gear; The transmission assembly (720) further includes: an intermediate worm gear (723), the intermediate worm gear (723) being engaged with the input worm; An intermediate worm (724) is provided on the intermediate worm wheel (723) and rotates synchronously with the intermediate worm wheel (723), and the intermediate worm (724) is meshed with the output worm wheel.

18. The display screen device (1000) according to claim 16 or 17, characterized in that: The driving mechanism (700) further comprises: A stop assembly (740), the mounting shaft (730) is provided with a first stop portion (731), the stop assembly (740) is sleeved on the mounting shaft (730), the stop assembly (740) and the first stop portion (731) are spaced apart in the axial direction of the mounting shaft (730), and the output member (722) is stopped between the first stop portion (731) and the stop assembly (740).

19. The display screen device (1000) according to claim 18, characterized in that: The stop assembly (740) includes: a stopper (741), the stopper (741) being mounted on the mounting shaft (730); a sleeve (742), the sleeve (742) being sleeved on the mounting shaft (730) and located on a side of the stopper (741) facing the output member (722), the sleeve (742) being configured with a second stopper (745) for stopping the output member (722); and An elastic pressure piece (743) is sleeved on the sleeve (742) and fitted between the stop piece (741) and the second stop portion (745).

20. The display screen device (1000) according to claim 19, characterized in that: The elastic pressure piece (743) is constructed as a compression spring, the stop piece (741) is a spring retaining ring, the mounting shaft (730) is provided with a retaining groove (732), and the spring retaining ring is clamped into the retaining groove (732).

21. The display screen device (1000) according to claim 19 or 20, characterized in that: The stop assembly (740) further includes: A first gasket (744), the first gasket (744) is arranged between the elastic pressure piece (743) and the stopper (741).

22. The display screen device (1000) according to any one of claims 18 to 21, characterized in that: The driving mechanism (700) further comprises: a plane bearing (750), the plane bearing (750) being sleeved on the mounting shaft (730) and located on a side of the output member (722) facing the stop assembly (740); and A second gasket (760) is provided between the plane bearing (750) and the stopper assembly (740).

23. The display screen device (1000) according to any one of claims 15 to 22, characterized in that: The installation shaft (730) is spline-matched with the rotating shaft (121).

24. The display screen device (1000) according to any one of claims 14 to 23, characterized in that: Also includes: a sensor bracket (800), the sensor bracket (800) being located on the other side of the display screen (100) so as to be disposed on two opposite sides of the display screen (100) with the driving mechanism (700), the sensor bracket (800) being mounted on the rotating shaft (122) on the other side of the display screen (100); and An angular displacement sensor (900) is provided on the sensor bracket (800), and the angular displacement sensor (900) is used to detect the rotation angle of the display screen (100).

25. A vehicle (2000), characterized in that include: The display screen device (1000) according to any one of claims 8 to 24.

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