Vehicle-mounted number plate device and vehicle

Abstract

The utility model provides a vehicle-mounted number plate device and a vehicle, and belongs to the technical field of vehicle-mounted function modules. By means of the vehicle-mounted number plate device, a plurality of telephone numbers can be displayed, different vehicle number plates do not need to be replaced, and using convenience and flexibility are effectively improved. The vehicle-mounted number plate device is integrated on the instrument board body, so that the problem that the number plate is easy to fall off or lose is avoided, and the use reliability is better. The axial driving assembly is matched with the axial adjusting piece to enable the synchronous assemblies to move, and the number of the synchronous assemblies is reduced. The rotating shaft is arranged to be the hollow shaft, the axial adjusting piece and the synchronous assembly are both arranged in the cavity of the rotating shaft, the overall size of the device can be compressed in the radial direction of the rotating shaft, and the overall structural compactness of the device is improved. The circumferential limiting assembly is divided into the circumferential limiting block and the limiting rolling shaft, the combination stability of the circumferential limiting block and the first limiting sliding groove is guaranteed, and meanwhile the circumferential limiting block moves smoothly.

Description

Vehicle license plate device and vehicle Technical Field

[0001] This utility model belongs to the technical field of vehicle-mounted functional modules, specifically relating to a vehicle-mounted license plate device and a vehicle. Background Technology

[0002] A vehicle license plate is a temporary contact information display tool placed near the center console inside a vehicle. It is primarily used by the vehicle owner for emergency or temporary communication with others while parking or driving. Its main uses and scenarios are as follows: When a vehicle's temporary parking may obstruct others (such as occupying a private parking space or blocking a passageway), others can quickly contact the owner to move the vehicle using the contact information on the license plate, avoiding conflicts or malicious damage to the vehicle; when parking in public places such as shopping malls or residential areas, it facilitates emergency contact with management personnel or other vehicle owners; in case of accidents such as scratches, malfunctions, or oil leaks, passersby or traffic police can promptly notify the owner using the license plate; if the vehicle's lights are not turned off, windows are not closed, or items are left behind, others can kindly remind the owner.

[0003] Existing vehicle license plates still have some shortcomings. For example, a license plate can generally only display one number. If the vehicle owner changes the number or the driver, a new license plate is required to update the phone number information, which is not very convenient or flexible. Summary of the Invention

[0004] This utility model provides a vehicle license plate device and vehicle, aiming to solve the problems of limited display capacity, poor ease of use, and low flexibility of existing vehicle license plates.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, embodiments of the present invention provide a vehicle license plate device, comprising:

[0007] The main drive assembly is connected to the instrument panel body and has a rotating shaft;

[0008] Multiple rotating adjustment rings are all sleeved on the outer periphery of the rotating shaft, and each of the rotating adjustment rings has multiple digital display sections distributed along its own circumference. The multiple rotating adjustment rings are distributed along the axial direction of the rotating shaft.

[0009] A synchronization unit is connected to the rotating shaft of the main drive assembly and can rotate synchronously with the rotating shaft. The synchronization unit has a synchronization component, which has a synchronization end that can extend and retract radially along the rotating shaft. The synchronization end can synchronously engage with the rotating shaft and one of the rotating adjustment rings, so that the rotating shaft drives the corresponding rotating adjustment ring to rotate synchronously. The synchronization end can also disengage the rotating shaft and the rotating adjustment ring to block the transmission of torque from the rotating shaft to the rotating adjustment ring.

[0010] Existing vehicle license plates typically display numbers by affixing number stickers to a bracket or by handwriting numbers in a designated writing area on the bracket. This results in a bracket often only being able to display one phone number, severely limiting its ease of use and flexibility.

[0011] To address the aforementioned problems, the solution presented in this application, compared to existing technologies, involves multiple digital display sections arranged circumferentially on a single rotating adjustment ring. A synchronizing end is synchronously engaged with the rotating shaft and the rotating adjustment ring. The main drive assembly rotates the rotating shaft, causing the rotating adjustment ring to rotate synchronously, thus aligning the designated digital display section on the rotating adjustment ring towards the windshield. After one rotating adjustment ring is adjusted to its position, the synchronizing end moves to release the synchronous engagement between the rotating shaft and the rotating adjustment ring. Subsequently, the synchronizing end of the synchronizing assembly synchronizes the rotating shaft with the next rotating adjustment ring, aligning the designated digital display section on that ring towards the windshield. This process is repeated until all designated digital display sections on the rotating adjustment rings are facing the windshield, completing the adjustment. Each designated digital display section forms a designated phone number, which can be viewed by people outside the vehicle through the windshield. This application achieves digital adjustment by rotating the rotating adjustment rings with a rotating shaft. The numbers displayed on each rotating adjustment ring are diverse, thus enabling diverse phone number displays. Multiple phone numbers can be displayed using a single vehicle license plate device, eliminating the need to change different vehicle license plates, effectively improving ease of use and flexibility. Furthermore, in the vehicle license plate device of this application, the main drive assembly is connected to the dashboard body, integrating the vehicle license plate device into the dashboard body. This eliminates the need for personnel to manually place the license plate, avoiding the problem of the license plate easily falling off or being lost, and improving reliability.

[0012] In conjunction with the first aspect, in one possible implementation, the rotating shaft has a first limiting hole, and the rotating adjusting ring has a second limiting hole corresponding to the first limiting hole. The synchronizing end can pass through the first limiting hole and the second limiting hole, so that the rotating shaft and the corresponding rotating adjusting ring can be synchronously engaged. By setting holes that allow the synchronizing end to observe, the synchronous engagement function of the synchronizing end is achieved. The structure of the synchronizing component, rotating shaft, and rotating adjusting ring is relatively simple, the design and manufacturing cost is low, and the control is more convenient, effectively reducing the failure rate.

[0013] In conjunction with the first aspect, in one possible implementation, the synchronization unit further includes:

[0014] An axial adjustment component is movable along the axial direction of the rotating shaft, and the synchronization component is fixed to the axial adjustment component;

[0015] An axial drive assembly is connected to the axial adjustment member in a transmission manner and can drive the axial adjustment member to move axially along the rotation axis;

[0016] A circumferential limiting component is disposed between the axial adjusting member and the rotating shaft, and can limit the displacement of the axial adjusting member in the circumferential direction of the rotating shaft.

[0017] Since the axial drive assembly and the axial adjustment component cooperate to cause the synchronization assembly to move, the number of synchronization assemblies is less than the number of rotary adjustment rings. By using axial displacement, the purpose of having at least two rotary adjustment rings corresponding to the same synchronization assembly can be achieved, which can reduce the number of synchronization assemblies, simplify the structure of the synchronization unit, and reduce the number of parts.

[0018] In some embodiments, the rotating shaft is a hollow shaft, and both the axial adjusting member and the synchronization component are disposed within the cavity of the rotating shaft. The circumferential limiting component is fixed to one of the rotating shaft and the axial adjusting member, and the other of the rotating shaft and the axial adjusting member has a first limiting groove. The circumferential limiting component extends into the first limiting groove and slides within it. The hollow shaft design allows for the built-in synchronization unit, compressing the overall size of the device radially and improving the overall structural compactness of the device. In addition to circumferentially limiting the rotation between the rotating shaft and the axial adjusting member, the circumferential limiting component also acts as a sliding guide in the axial direction of the rotating shaft through the first limiting groove, further enhancing the stability of the axial adjusting member's movement.

[0019] In some embodiments, the circumferential limiting component includes a circumferential limiting block and a limiting roller, wherein the circumferential limiting block is fixed to one of the rotating shaft and the axial adjusting member, and one end extends into the first limiting groove;

[0020] The limiting roller passes through the extended end of the circumferential limiting block and is perpendicular to the axial direction of the rotating shaft. The side wall of the first limiting groove is provided with a second limiting groove. The end of the limiting roller extends into the second limiting groove and rolls with the second limiting groove.

[0021] The circumferential limiting block itself has a large volume, and the contact area between the circumferential limiting block and the first limiting groove is also larger, making the limiting effect of the circumferential limiting block more stable. In order to prevent the circumferential limiting block from coming out of the first limiting groove, a limiting roller is provided, which extends into the second limiting groove, thereby restricting the displacement of the circumferential limiting block in the opening direction of the first limiting groove. In addition, since the limiting roller and the second limiting groove roll together, the sliding friction can be greatly reduced, thereby making the movement of the limiting roller in the second limiting groove smoother.

[0022] In conjunction with the first aspect, in one possible implementation, a radial positioning member is supported between the rotating shaft and the rotating adjusting ring. This radial positioning member is connected to either the rotating shaft or the rotating adjusting ring, ensuring that the rotating adjusting ring remains coaxially fitted around the outer circumference of the rotating shaft. This eliminates the need for limiting structures between the rotating adjusting ring and other peripheral components, not only preserving the rotational movement of the rotating shaft and the rotating adjusting ring but also simplifying the support structure of the rotating adjusting ring and reducing the number of components.

[0023] In some embodiments, multiple radial positioning elements are provided, and these multiple radial positioning elements are evenly distributed circumferentially along the rotation axis. Each radial positioning element is an elastic element and is configured with a preload force that causes the rotating adjusting ring to move radially away from the rotation axis. Because the radial positioning elements are elastic, the precision requirements for the fit between the radial positioning elements and the rotation axis and rotating adjusting ring are relatively low, preventing frictional noise or vibration noise from occurring when the rotation axis is spinning freely, thus improving NVH performance.

[0024] In some embodiments, the radial positioning element is an arc-shaped elastic sheet, with the arc centerline parallel to the axis of the rotating shaft. One end of the radial positioning element is connected to either the rotating shaft or the rotating adjusting ring. The other end of the rotating shaft or the rotating adjusting ring has a limiting groove, which is a V-groove, to accommodate the other end of the radial positioning element. The arc-shaped elastic sheet compresses the size of the radial positioning element circumferentially around the rotating shaft, allowing for a greater number of radial positioning elements and more elastic support points between the rotating shaft and the rotating adjusting ring. This not only improves support reliability but also enhances the vibration damping and noise reduction effect of the radial positioning element. Furthermore, fixing the radial positioning element to the rotating shaft or the rotating adjusting ring and limiting its position through the limiting groove ensures the stability of its position in a static state, thus providing effective support.

[0025] In conjunction with the first aspect, in one possible implementation, the vehicle license plate device further includes a decorative housing connected to the dashboard body, the decorative housing having a display window extending axially along the rotation axis. By providing the decorative housing, the aesthetics of the vehicle license plate device are improved, while also protecting components such as the main drive assembly and synchronization unit.

[0026] Secondly, this utility model embodiment also provides a vehicle including the above-mentioned vehicle license plate device.

[0027] Compared with the prior art, the solution shown in this application, by adopting the above-mentioned vehicle license plate device, achieves the effect of displaying multiple phone numbers through a single device, eliminating the need to change different license plates. This effectively improves convenience and flexibility, and reduces the cost of license plate usage. Furthermore, by integrating the vehicle license plate device into the dashboard, manual placement of the license plates is eliminated, avoiding the problem of license plates easily falling off or being lost. This improves reliability and enhances the user experience. Attached Figure Description

[0028] Figure 1 is a perspective view of the vehicle license plate device provided in an embodiment of the present invention;

[0029] Figure 2 is an assembly perspective view of the main drive assembly, rotating adjustment ring and synchronization unit used in the embodiment of this utility model;

[0030] Figure 3 is a two-dimensional assembly view of the main drive assembly, rotating adjustment ring and synchronization unit used in the embodiment of this utility model;

[0031] Figure 4 is an axial assembly view of the rotating shaft, rotating adjusting ring, and radial positioning component used in the embodiment of this utility model;

[0032] Figure 5 is an enlarged view of part A in Figure 4;

[0033] Figure 6 is an assembly perspective view of the rotating shaft, rotating adjusting ring, radial positioning component and synchronization unit used in the embodiment of this utility model;

[0034] Figure 7 is a perspective view of the synchronization unit used in the embodiment of this utility model;

[0035] Figure 8 is a perspective view of the circumferential limiting component used in the embodiment of this utility model;

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Main drive assembly; 110. Rotary shaft; 120. Main driver; 2. Rotary adjustment ring; 210. Digital display unit; 3. Synchronization unit; 310. Synchronization assembly; 311. Synchronization end; 312. Telescopic drive unit; 313. Telescopic rod; 320. Axial adjustment component; 330. Axial drive assembly; 331. Driven rack; 332. Axial driver; 333. Drive gear; 340. Circumferential limiting assembly; 341. Circumferential limiting block; 342. Limiting roller; 4. First limiting hole; 5. Second limiting hole; 6. First limiting groove; 7. Second limiting groove; 8. Radial positioning component; 9. Limiting groove; 910. First wall surface; 920. Second wall surface; 10. Decorative outer shell; 1010. Display window; 11. Positioning protrusion. Detailed Implementation

[0038] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0040] In the claims, description, and accompanying drawings of this utility model, the terms "upper" and "lower" correspond to the vertical direction of the vehicle body; the terms "front" and "rear" correspond to the front-rear direction of the vehicle body; and the terms "left" and "right" correspond to the left-right direction of the vehicle body. Other directional terms, unless otherwise explicitly defined, such as "vertical," "inner," and "outer," are used to indicate orientation or positional relationships based on the orientation and positional relationships shown in the accompanying drawings. These are merely for the convenience of describing the utility model 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 limiting the specific scope of protection of this utility model.

[0041] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0042] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0043] Please refer to Figures 2 and 3 together. The vehicle license plate device provided by this utility model will now be described. The vehicle license plate device includes a main drive assembly 1, multiple rotating adjustment rings 2, and a synchronization unit 3. The main drive assembly 1 is connected to the instrument panel body and has a rotating shaft 110. The multiple rotating adjustment rings 2 are all sleeved on the outer periphery of the rotating shaft 110, and each rotating adjustment ring 2 has multiple digital display sections 210 distributed along its own circumference. The multiple rotating adjustment rings 2 are distributed along the axial direction of the rotating shaft 110. The synchronization unit 3 is connected to the rotating shaft 110 of the main drive assembly 1 and can rotate synchronously with the rotating shaft 110. The synchronization unit 3 has a synchronization component 310, which has a synchronization end 311 that can extend and retract radially along the rotating shaft 110. The synchronization end 311 can synchronously engage with the rotating shaft 110 and one of the rotating adjustment rings 2, so that the rotating shaft 110 drives the corresponding rotating adjustment ring 2 to rotate synchronously. The synchronization end 311 can also disengage the rotating shaft 110 and the rotating adjustment ring 2 to block the transmission of torque from the rotating shaft 110 to the rotating adjustment ring 2.

[0044] In this embodiment, different digit display units 210 within the same rotating adjustment ring 2 display different numbers. For example, the rotating adjustment ring 2 shown in Figure 4 has nine digit display units 210, which display the numbers "1" to "9" respectively. It should be understood that the number of rotating adjustment rings 2, the number of digit display units 210 on the same rotating adjustment ring 2, and the numbers displayed are set according to the actual needs of the telephone number. For example, Figures 2 and 3 show an embodiment with eleven rotating adjustment rings 2, each with nine digit display units 210.

[0045] In this embodiment, the rotating adjustment ring 2 is a ring-shaped component with a relatively flat outer surface, and the digital display part 210 is a pattern printed on the surface of the rotating adjustment ring 2; or, the surface of the rotating adjustment ring 2 is provided with block-shaped, columnar or other protrusions, as shown in Figures 2 and 3, and the outer end face of the protrusion is the display surface, and different numbers are displayed on each display surface.

[0046] In this embodiment, the main drive assembly 1 includes a main driver 120 and a rotating shaft 110, with the rotating shaft 110 serving as the output shaft of the main driver 120. The main driver 120 can be implemented in ways including, but not limited to, a servo motor, a stepper motor, or a permanent magnet synchronous motor.

[0047] Existing vehicle license plates typically display numbers by affixing number stickers to a bracket or by handwriting numbers in a designated writing area on the bracket. This results in a bracket often only being able to display one phone number, severely limiting its ease of use and flexibility.

[0048] To address the aforementioned issues, the vehicle license plate device provided in this embodiment, compared to existing technologies, features multiple digit display sections 210 arranged circumferentially on the same rotating adjustment ring 2. This allows the synchronization end 311 to synchronously engage with the rotating shaft 110 and the rotating adjustment ring 2. The main drive assembly 1 rotates the rotating shaft 110, causing the rotating adjustment ring 2 to rotate synchronously, thus aligning the designated digit display sections 210 on the rotating adjustment ring 2 towards the windshield. After one rotating adjustment ring 2 is adjusted to its proper position, the synchronization end 311 moves to release the synchronous engagement between the rotating shaft 110 and the rotating adjustment ring 2. Subsequently, the synchronization end 311 of the synchronization assembly 310 synchronizes the rotating shaft 110 with the next rotating adjustment ring 2, aligning the designated digit display sections 210 on that rotating adjustment ring 2 towards the windshield. This process is repeated until all designated digit display sections 210 on the rotating adjustment rings 2 are aligned with the windshield, completing the adjustment. Each designated digit display section 210 forms a designated phone number, which can be viewed by people outside the vehicle through the windshield. This application achieves digital adjustment by rotating the rotating adjustment ring 2 through the rotating shaft 110. Each rotating adjustment ring 2 displays a variety of numbers, thus enabling diverse phone number displays. Multiple phone numbers can be displayed through a single vehicle license plate device, eliminating the need to change different vehicle license plates, effectively improving ease of use and flexibility. Furthermore, in this application's vehicle license plate device, the main drive assembly 1 is connected to the dashboard body, integrating the vehicle license plate device onto the dashboard body. This eliminates the need for manual placement of the license plate, avoiding the problem of the license plate easily falling off or being lost, and improving reliability.

[0049] In some embodiments, the vehicle license plate device further includes a control unit, which is communicatively connected to the main drive assembly 1 and the synchronization assembly 310. The control unit controls the rotation of the rotating shaft 110 by controlling the main drive assembly 1, and controls the radial movement of the synchronization end 311 by controlling the synchronization assembly 310. The communication connection can be implemented using, but is not limited to, wired or wireless connections (e.g., Bluetooth, Wi-Fi), as long as it meets the control requirements. The control unit can be implemented using, but is not limited to, a vehicle computer or a cloud processing platform.

[0050] In a specific embodiment of the control strategy of some control units, in the initial state, each digital display unit 210 in each rotating adjustment ring 2 maintains the initial display state and does not display the actual number information; wherein, the initial state refers to the state when the vehicle is in motion, the initial display state can be that all digital display units 210 facing the windshield on each rotating adjustment ring 2 are "0", all are "1", or other display forms, as long as the actual phone number is not displayed. If the control unit detects that the vehicle has switched to parking mode, it generates an adjustment command. The synchronization component 310, according to the adjustment command, causes the synchronization end 311 to circumferentially lock the first rotating adjustment ring 2 to the rotating shaft 110. The main drive component 1 drives the rotating adjustment ring 2 to rotate through the rotating shaft 110 according to the preset number until the designated digit display 210 faces the windshield. Subsequently, the synchronization end 311 of the synchronization component 310 disengages from the rotating shaft 110 and the rotating adjustment ring 2. The synchronization end 311 of the synchronization component 310 enables the rotating shaft 110 to synchronously engage with the next rotating adjustment ring 2, thereby realizing the rotation adjustment of the rotating adjustment ring 2. The above adjustment steps are repeated until the designated digit display 210 on all rotating adjustment rings 2 faces the windshield, and the number adjustment is completed. At this time, the digit display 210 on each rotating adjustment ring 2 facing the windshield is combined to form the designated telephone number. If the control unit detects that the vehicle has switched from parking to driving, the main control drive assembly 1 and the synchronization unit 3 cooperate to restore the digital display units 210 on each rotary adjustment unit to their initial display state.

[0051] In this embodiment, "the digital display unit 210 facing the windshield" specifically means that the display surface of the corresponding digital display unit 210 is directly facing the windshield, or has a certain angle with the windshield, but can be seen by people outside the vehicle.

[0052] In some specific embodiments of the control strategy of other control units, in the initial state, each digital display unit 210 in each rotating adjustment ring 2 maintains the initial display state and does not display the actual number information. Identification codes are provided at other locations of the vehicle license plate device or on the vehicle body. Persons needing to move their vehicles can scan the identification code using a mobile terminal (e.g., a mobile phone) to access the cloud processing platform. The person needing to move the vehicle then sends a vehicle moving request to the vehicle owner through the cloud processing platform. If the vehicle owner agrees to move the vehicle, they send a pass command to the cloud processing platform. The cloud processing platform then sends an adjustment command to the control unit. The control unit controls the synchronization component 310 according to the adjustment command, causing the synchronization end 311 to circumferentially lock the first rotating adjustment ring 2 to the rotating shaft 110. The main drive component 1 drives the rotating ring 2 through the rotating shaft 110 according to the preset number. The adjustment ring 2 rotates until the designated digital display 210 faces the windshield. Then, the synchronization end 311 of the synchronization component 310 disengages from the rotating shaft 110 and the adjustment ring 2. The synchronization end 311 of the synchronization component 310 enables the rotating shaft 110 to synchronize with the next adjustment ring 2, thereby achieving the rotation adjustment of that adjustment ring 2. The above adjustment steps are repeated until the designated digital display 210 on all the adjustment rings 2 faces the windshield, completing the number adjustment. At this point, the digital display 210s facing the windshield on each adjustment ring 2 combine to form the designated phone number. After the designated phone number is displayed for a certain period (e.g., no more than 10 minutes), the control unit generates a recovery command. The main drive component 1 and the synchronization unit 3 restore the digital display 210 on each adjustment unit to its initial display state according to the recovery command. This effectively ensures that the vehicle owner's phone number information can only be seen by those who need to move the vehicle, thus effectively protecting the security of the vehicle owner's information.

[0053] In addition to the control unit, the rotating adjustment ring 2 is also equipped with a lighting device, and other locations on the vehicle body or other parts of the device are equipped with light sensors. The control unit is also connected in communication with the lighting device and the light sensors. If the ambient light is dim, the light sensor detects this and sends feedback to the control unit, which then controls the lighting device to turn on, increasing the brightness around the digital display unit 210 and making it easier to view the numbers on the digital display unit 210.

[0054] In summary, setting up a control unit has the following beneficial effects: 1) The system can automatically sense the vehicle's status and display information, eliminating the need for manual operation by the owner, improving the user experience, and ensuring timely and effective communication during temporary parking. 2) The information display process is strictly managed, requiring owner confirmation, and only displaying specific information when needed, effectively protecting owner privacy. 3) Through a cloud processing platform, it enables interaction with the owner's mobile terminal (e.g., a mobile phone), achieving remote control and updates of information, meeting diverse usage needs, and improving system flexibility and user satisfaction through intelligent interaction. 4) Advanced environmental sensing technology ensures that information is clearly displayed under various weather conditions, effectively increasing the readability and recognizability of the information.

[0055] In some embodiments, referring to Figure 6, the rotating shaft 110 has a first limiting hole 4, and the rotating adjusting ring 2 has a second limiting hole 5 corresponding to the first limiting hole 4. The synchronizing end 311 can extend outward and pass through the first limiting hole 4 and the second limiting hole 5, so that the rotating shaft 110 and the corresponding rotating adjusting ring 2 are synchronously engaged, achieving the purpose of driving the rotating adjusting ring 2 to rotate synchronously through the rotating shaft 110; the synchronizing end 311 can also retract inward and disengage from the first limiting hole 4 and the second limiting hole 5, so as to release the synchronous engagement state between the rotating shaft 110 and the corresponding rotating adjusting ring 2. In this embodiment, the synchronous engagement function of the synchronizing end 311 is achieved by setting a hole position that allows the synchronizing end 311 to be observed. The structure of the synchronizing component 310, the rotating shaft 110 and the rotating adjusting ring 2 is relatively simple, the design and manufacturing cost is low, and the control is more convenient, which can effectively reduce the failure rate.

[0056] The direction of rotation of the adjusting ring 2 during rotation adjustment is taken as the positive direction of rotation (as shown by the arc arrow in Figure 4), and the direction of rotation of the adjusting ring 2 when it returns to its initial state is taken as the negative direction of rotation (i.e., the direction opposite to the positive direction of rotation). Based on the above embodiment, the distribution of the first limiting hole 4 and the second limiting hole 5 is illustrated as follows:

[0057] 1) The rotating shaft 110 has a first limiting hole 4, which is always aligned with the synchronizing end 311 of the synchronizing assembly 310. The rotating adjusting ring 2 has a second limiting hole 5. When it is necessary to adjust the number displayed on the rotating adjusting ring 2 to the number in a telephone number, the synchronizing end 311 passes through both the first and second limiting holes 5 simultaneously, and the rotating shaft 110 and the rotating adjusting ring 2 rotate synchronously in the positive direction. After adjustment, the synchronizing end 311 is released from the synchronous engagement state, and the rotating shaft 110 rotates to reset in the negative direction, so that the synchronizing end 311 can correspond to the second limiting hole 5 on the next rotating adjusting ring 2. When it is necessary to restore the number displayed on the rotating adjusting ring 2 to the initial display state, the rotating shaft 110 needs to be rotated in the positive direction to align the synchronizing end 311 with the second limiting hole 5. In the synchronous engagement state, the rotating shaft 110 drives the rotating adjusting ring 2 to rotate to reset in the negative direction. After adjustment, the synchronizing end 311 is released from the synchronous engagement state.

[0058] 2) The rotating shaft 110 is provided with a first limiting hole 4, which is always aligned with the synchronizing end 311 of the synchronizing assembly 310. The rotating adjusting ring 2 is provided with the same number of second limiting holes 5 as the digital display section 210, and they correspond one-to-one. When it is necessary to adjust the number displayed on the rotating adjusting ring 2 to the number in the telephone number, the synchronizing end 311 passes through the first limiting hole and one of the second limiting holes 5 simultaneously, and the rotating shaft 110 and the rotating adjusting ring 2 rotate synchronously in the positive direction. After the adjustment is completed, the synchronizing end 311 is released from the synchronous engagement state, and the rotating shaft 110 can be aligned with the second limiting hole 5 on the next rotating adjusting ring 2 without rotating in the negative direction to reset. When it is necessary to restore the number displayed on the rotating adjusting ring 2 to the initial display state, there is no need to adjust the rotation angle of the rotating shaft 110. The synchronizing end 311 can be directly inserted into the first limiting hole 4 and one of the second limiting holes 5. In the synchronous engagement state, the rotating shaft 110 drives the rotating adjusting ring 2 to rotate in the negative direction to reset. After the adjustment is completed, the synchronizing end 311 is released from the synchronous engagement state.

[0059] It should be noted that an angle sensor (such as a Hall sensor) is provided between the rotating shaft 110 and the main drive 120, which can accurately determine the rotation angle of the rotating shaft 110, so as to facilitate the alignment of the synchronization end 311 with the designated second limit hole 5.

[0060] In the embodiment of the first type of synchronization unit 3, the number of synchronization components 310 is the same as that of the rotary adjustment rings 2, and the two correspond one-to-one. When it is necessary to adjust a certain rotary adjustment ring 2, the synchronization end 311 on the corresponding synchronization component 310 is extended outward, and can pass through the first limiting hole 4 and the corresponding second limiting hole 5, without adjusting the position of the synchronization component 310 along the axial direction of the rotation shaft 110. Optionally, the synchronization unit 3 also includes a circumferential limiting member, which is disposed between the synchronization component 310 and the rotation shaft 110, and can limit the displacement of the synchronization component 310 in the circumferential direction of the rotation shaft 110, ensuring that the rotation shaft 110 can drive the synchronization component 310 to rotate synchronously.

[0061] In an embodiment of the second type of synchronization unit 3, referring to Figures 2 to 4, 6 and 7, the synchronization unit 3 further includes an axial adjustment member 320, an axial drive assembly 330 and a circumferential limiting assembly 340; the axial adjustment member 320 can move axially along the rotation shaft 110, and the synchronization assembly 310 is fixed on the axial adjustment member 320; the axial drive assembly 330 is connected to the axial adjustment member 320 and can drive the axial adjustment member 320 to move axially along the rotation shaft 110; the circumferential limiting assembly 340 is disposed between the axial adjustment member 320 and the rotation shaft 110 and can limit the displacement of the axial adjustment member 320 in the circumferential direction of the rotation shaft 110. In this embodiment, since the axial drive component 330 cooperates with the axial adjustment component 320, the synchronization component 310 can be displaced. Therefore, the number of synchronization components 310 is less than the number of rotating adjustment rings 2. The axial displacement achieves the purpose of having at least two rotating adjustment rings 2 corresponding to the same synchronization component 310. Figures 6 and 7 show an embodiment where one synchronization component 310 corresponds to eleven rotating adjustment rings 2. This reduces the number of synchronization components 310, simplifies the structure of the synchronization unit 3, and reduces the number of parts. In addition, the circumferential limiting component 340 is used to achieve circumferential rotation of the synchronization component 310 and the rotating shaft 110, ensuring that the synchronization component 310 is aligned with the first limiting hole 4.

[0062] Based on the synchronization unit 3, which includes an axial drive assembly 330, an axial adjustment component 320, and a circumferential limiting assembly 340, the control unit is communicatively connected to the axial drive assembly 330. If the control unit detects that the vehicle has switched to a parking state, it generates an adjustment command. According to the adjustment command, the synchronization assembly 310 causes the synchronization end 311 to circumferentially lock the first rotating adjustment ring 2 to the rotating shaft 110. The main drive assembly 1 drives the rotating adjustment ring 2 to rotate according to a preset number via the rotating shaft 110 until the designated digital display 210 faces the windshield. Subsequently, the synchronization end 311 of the synchronization assembly 310 disengages from the rotating shaft 110 and the rotating adjustment ring 2, and then moves along the axial direction of the rotating shaft 110 to the position corresponding to the next rotating adjustment ring 2. The above adjustment steps are repeated until the designated digital display 210 on all rotating adjustment rings 2 faces the windshield, and the number adjustment is completed. If the vehicle license plate device has an identification code in another location or on the vehicle body, after the vehicle owner sends a request to move the vehicle through a person who needs the vehicle moved, the control unit controls the synchronization component 310 according to the adjustment command, so that the synchronization end 311 circumferentially locks the first rotating adjustment ring 2 with the rotating shaft 110. The main drive component 1 drives the rotating adjustment ring 2 to rotate through the rotating shaft 110 according to the preset number until the designated number display 210 faces the windshield. Then, the synchronization end 311 of the synchronization component 310 disengages from the rotating shaft 110 and the rotating adjustment ring 2, and moves along the axial direction of the rotating shaft 110 to the position corresponding to the next rotating adjustment ring 2. The above adjustment steps are repeated until the designated number display 210 on all rotating adjustment rings 2 faces the windshield, and the number adjustment is completed.

[0063] Based on the above embodiments, the implementation method of the synchronization component 310 is exemplified as follows:

[0064] 1) The synchronization assembly 310 has a telescopic drive unit 312 and a telescopic rod 313. Referring to Figures 4, 6, and 7, the telescopic rod 313 is connected to the telescopic drive unit 312, and the telescopic rod 313 forms a synchronization end 311. The telescopic drive unit 312 can drive the telescopic rod 313 to reciprocate. The telescopic drive unit 312 can be implemented in ways including, but not limited to, an electric actuator, a telescopic cylinder, or a telescopic hydraulic cylinder. The synchronization assembly 310 is disposed within the rotating shaft 110 to make the overall structure of the vehicle license plate device more compact. Alternatively, the synchronization unit 3 is disposed outside the rotating adjusting ring 2. In this case, the telescopic rod 313 passes sequentially through the second limiting hole 5 on the rotating adjusting ring 2 and the first limiting hole 4 on the rotating shaft 110 to achieve synchronous engagement between the rotating shaft 110 and the rotating adjusting ring 2. If the synchronization unit 3 is disposed within the rotating shaft 110,

[0065] 2) The synchronization component 310 includes a magnetic suction body and a magnetic suction rod. The magnetic suction rod is slidably inserted into the first limiting hole 4 on the rotating shaft 110. The magnetic suction body is an electromagnet. If the electromagnet is energized and generates magnetism, the magnetic suction rod can be moved. If the magnetic suction body is located inside the rotating shaft 110, the electromagnet generates a repulsive force on the magnetic suction rod, pushing the magnetic suction rod out of the first limiting hole 4, with the pushed end extending into the second limiting hole 5. After adjustment, the electromagnet generates an attractive force on the magnetic suction rod, pulling the magnetic suction rod back into the first limiting hole 4, and the synchronization between the rotating shaft 110 and the rotating adjustment ring 2 is released. If the magnetic suction body is located outside the rotating adjustment ring 2, the electromagnet generates an attractive force on the magnetic suction rod, pulling the magnetic suction rod out of the first limiting hole 4, with the pulled end extending into the second limiting hole 5. After adjustment, the electromagnet generates a repulsive force on the magnetic suction rod, pushing the magnetic suction rod back into the first limiting hole 4, and the synchronization between the rotating shaft 110 and the rotating adjustment ring 2 is released.

[0066] In some embodiments, referring to Figures 2 to 6, the rotating shaft 110 is a hollow shaft, and the axial adjustment member 320 and the synchronization component 310 are both disposed in the cavity of the rotating shaft 110. This can compress the overall size of the device in the radial direction of the rotating shaft 110, which is beneficial to improving the overall structural compactness of the device. Based on this, the circumferential limiting component 340 is fixed to one of the rotating shaft 110 and the axial adjustment member 320. The other of the rotating shaft 110 and the axial adjustment member 320 has a first limiting groove 6. The circumferential limiting component 340 extends into the first limiting groove 6 and slides and adapts to the first limiting groove 6. In addition to realizing the circumferential limiting between the rotating shaft 110 and the axial adjustment member 320, the circumferential limiting component 340 can also play a sliding guiding role in the axial direction of the rotating shaft 110 through the first limiting groove 6, which is beneficial to further improve the stability of the movement of the axial adjustment member 320.

[0067] In a specific embodiment of the axial adjustment component 320, the axial adjustment component 320 is a block-shaped component, the length of which is much smaller than the length of the rotating shaft 110. The axial drive assembly 330 includes an axial driver 332 and a lead screw. The lead screw is disposed on the output shaft of the axial driver 332. The axial adjustment component 320 has a screw hole adapted to the lead screw. The axial adjustment component 320 and the rotating shaft 110 are guided by a slide rail structure. The rotation of the lead screw drives the axial adjustment component 320 to reciprocate along the circumference of the rotating shaft 110.

[0068] In another specific embodiment of the axial adjustment component 320, referring to Figures 2 to 7, the axial adjustment component 320 is a movable guide rail extending axially along the rotation shaft 110, with one end extending out of the rotation shaft 110. The axial drive assembly 330 includes a driven rack 331, an axial driver 332, and a driving gear 333. The driven rack 331 is disposed on the movable guide rail and distributed along the length direction of the movable guide rail. The driving gear 333 meshes with the driven rack 331. The output end of the axial driver 332 is connected to the driving gear 333, and the axial driver 332 is fixedly connected to the rotation shaft 110. The driving gear 333 can transmit the torque output by the circumferential driver to the movable guide rail, so that the movable guide rail reciprocates circumferentially along the rotation shaft 110. The axial driver 332 can be implemented in ways including, but not limited to, a servo motor, a stepper motor, etc.

[0069] Optionally, the cross-section of the axial adjusting member 320 is an isosceles trapezoid to accommodate the circular contour of the internal cavity of the rotating shaft 110. A circumferential limiting component 340 is disposed on the large end face of the axial adjusting member 320 to increase the contact area between the two and improve the stability of the contact. Based on this, the arrangement of the driven rack 331 is illustrated below:

[0070] 1) The driven rack 331 is set on the small end face of the axial adjustment member 320. The driven rack 331 can cover the end face. Correspondingly, the driving gear 333 can be set as a cylindrical gear with a width approximately the same as the end face. Without increasing the radial dimension of the driving gear 333, the meshing stability between the driving gear 333 and the driven rack 331 is effectively improved.

[0071] 2) The driven rack 331 is set on the inclined side wall of the axial adjustment member 320, and the axial drive 332 and the drive gear 333 are also set on the corresponding side of the axial adjustment member 320, which can reduce the space occupied by the axial drive assembly 330 in the thickness direction of the axial adjustment member 320 and improve the structural compactness.

[0072] In some embodiments, referring to Figures 7 and 8, the circumferential limiting assembly 340 includes a circumferential limiting block 341 and a limiting roller 342. The circumferential limiting block 341 is fixed to one of the rotating shaft 110 and the axial adjusting member 320, and one end extends into the first limiting groove 6. The limiting roller 342 passes through the extended end of the circumferential limiting block 341 and is perpendicular to the axial direction of the rotating shaft 110. A second limiting groove 7 is provided on the side wall of the first limiting groove 6. The opening direction of the second limiting groove 7 is perpendicular to the opening direction of the first limiting groove 6. The end of the limiting roller 342 extends into the second limiting groove 7 and rolls with the second limiting groove 7. The circumferential limiting block 341 has a large volume, and the contact area between the circumferential limiting block 341 and the first limiting groove 6 is also larger, making the limiting effect of the circumferential limiting block 341 more stable. In order to prevent the circumferential limiting block 341 from coming out of the first limiting groove 6, a limiting roller 342 is provided, which extends into the second limiting groove 7, thereby restricting the displacement of the circumferential limiting block 341 in the opening direction of the first limiting groove 6. In addition, since the limiting roller 342 and the second limiting groove 7 roll together, the sliding friction can be greatly reduced, thereby making the movement of the limiting roller 342 in the second limiting groove 7 smoother.

[0073] Optionally, the circumferential limiting block 341 is provided with a plurality of limiting rollers 342 along the extension direction of the first limiting slide groove 6, so as to expand the contact area between the limiting rollers 342 and the second limiting slide groove 7 and improve the stability of their fit.

[0074] In some embodiments, referring to Figures 3 to 6, a radial positioning member 8 is supported between the rotating shaft 110 and the rotating adjusting ring 2. The radial positioning member 8 is connected to the rotating shaft 110 or the rotating adjusting ring 2 so that the rotating adjusting ring 2 is kept coaxially sleeved on the outer periphery of the rotating shaft 110. This eliminates the need to set a limiting structure between the rotating adjusting ring 2 and other components on the outer periphery, which not only does not affect the rotation of the rotating shaft 110 and the rotating adjusting ring 2, but also simplifies the support structure of the rotating adjusting ring 2 and reduces the number of parts.

[0075] In one implementation of the radial positioning element 8, the radial positioning element 8 is a rigid component, one end of which is fixedly connected to one of the rotating shaft 110 and the rotating adjusting ring 2, and the other end is slidably engaged with the other of the rotating shaft 110 and the rotating adjusting ring 2, thereby achieving coaxial positioning. In this embodiment, one or more radial positioning elements 8 may be provided.

[0076] In another implementation of the radial positioning element 8, as shown in Figures 3 to 6, multiple radial positioning elements 8 are provided, evenly distributed circumferentially along the rotation shaft 110. Each radial positioning element 8 is an elastic element, configured with a preload that causes the rotating adjusting ring 2 to move radially away from the rotation shaft 110. Because the radial positioning element 8 is elastic, the accuracy requirement for its fit with the rotation shaft 110 and the rotating adjusting ring 2 is relatively low. This prevents frictional noise or vibration noise from occurring when the rotation shaft 110 is idling, thus improving NVH performance.

[0077] In some specific implementations of the radial positioning element 8, the radial positioning element 8 is a spring or a rubber column, which can meet the requirements of elastic support performance.

[0078] In some specific implementations of the radial positioning element 8, as shown in Figures 3 to 6, the radial positioning element 8 is an arc-shaped elastic sheet, with the arc centerline of the radial positioning element 8 parallel to the axis of the rotating shaft 110. One end of the radial positioning element 8 is connected to either the rotating shaft 110 or the rotating adjusting ring 2. The other end of the rotating shaft 110 or the rotating adjusting ring 2 has a limiting groove 9 that can accommodate the other end of the radial positioning element 8. The limiting groove 9 is a V-shaped groove. The arc-shaped elastic sheet is a sheet-like component with elasticity, such as a stainless steel sheet. The arc-shaped elastic sheet can compress the size of the radial positioning element 8 in the circumferential direction of the rotating shaft 110, thereby allowing for a greater number of radial positioning elements 8 and more elastic support points between the rotating shaft 110 and the rotating adjusting ring 2. This not only improves the reliability of the support but also enhances the vibration damping and noise reduction effect of the radial positioning element 8. In addition, the radial positioning component 8 is fixed on the rotating shaft 110 or the rotating adjusting ring 2, and the radial positioning component 8 is limited by the limiting groove 9 to ensure the stability of the position of the radial positioning component 8 in the static state, thereby providing effective support.

[0079] The direction of rotation of the adjusting ring 2 during rotation adjustment is taken as the positive direction of rotation (as shown by the arc arrow in Figure 4), and the direction of rotation of the adjusting ring 2 when it returns to its initial state is taken as the negative direction of rotation. In some embodiments, referring to Figures 4 and 5, if one end of the radial positioning member 8 is connected to the inner ring surface of the adjusting ring 2, the radial positioning member 8 is bent and protruded along the positive direction of rotation; the limiting groove 9 is opened on the outer peripheral surface of the rotating shaft 110, with the side wall of the limiting groove 9 facing away from the protruding side of the radial positioning member 8 as the first wall surface 910, and the other side wall surface as the second wall surface 920. With the opening plane of the limiting groove 9 as the reference surface, the inclination of the first wall surface 910 relative to the reference surface is greater than the inclination of the second wall surface 920 relative to the reference surface. When the rotating shaft 110 drives the rotating adjusting ring 2 to adjust in the positive direction, during the adjustment process, the first wall surface 910 abuts against the end of the radial positioning member 8 to prevent the radial positioning member 8 from dislodging from the limiting groove 9, thus ensuring the stability of the relative position between the rotating adjusting ring 2 and the rotating shaft 110. After the adjustment is in place, the adjusting end disengages from the rotating adjusting ring 2, and the rotating shaft 110 rotates back to its original position in the negative direction. During the reset process, the end of the radial positioning member 8 can smoothly slide over the second wall surface 920 and disengage from the limiting groove 9, ensuring the smoothness of the reset rotation of the rotating shaft 110.

[0080] If one end of the radial positioning member 8 is connected to the outer peripheral surface of the rotating shaft 110, the radial positioning member 8 is bent and protruded in the positive spiral direction; the limiting groove 9 is opened on the inner annular surface of the rotating adjusting ring 2, with the side wall of the limiting groove 9 facing away from the protruding side of the radial positioning member 8 as the first wall surface and the other side wall surface as the second wall surface, and with the opening plane of the limiting groove 9 as the reference surface, the inclination of the first wall surface relative to the reference surface is greater than the inclination of the second wall surface relative to the reference surface. In this case, the cooperation method between the radial positioning member 8 and the limiting groove 9 is similar to that in the previous case, and will not be described again here.

[0081] In some embodiments, referring to FIG1, to improve the aesthetics of the vehicle license plate device and to protect components such as the main drive assembly 1 and the synchronization unit 3, the vehicle license plate device also includes a decorative housing 10. The decorative housing 10 is connected to the dashboard body and has a display window 1010 that extends axially along the rotation axis 110. In this embodiment, the width of the display window 1010 is greater than the outer diameter of a single digit display section 210, but smaller than the distance between two adjacent digit display sections 210 on the same rotating adjustment ring 2. It can only display the digit information of a single digit display section 210 on the rotating adjustment ring 2, while blocking the digit information on other digit display sections 210 that do not need to be displayed, thus preventing misreading by people outside the vehicle.

[0082] In some implementations, the decorative housing 10 protrudes upward from the instrument panel body, in which case the display window 1010 opens forward. In other implementations, the decorative housing 10 is flush with the instrument panel body, in which case the display window 1010 opens upward. A mounting slot is provided on the instrument panel body, and the decorative housing 10 is placed in the mounting slot.

[0083] Optionally, for easy display, the decorative shell 10 is provided with an identification code, which is set on the decorative shell 10 by spraying, printing, sticker affixing or other methods.

[0084] Optionally, the display window 1010 may be covered with a transparent cover (e.g., an acrylic cover or a glass cover) to effectively seal the decorative housing 10 and prevent foreign objects from entering the decorative housing 10 or the dashboard body from the display window 1010.

[0085] Optionally, the decorative housing 10 forms an integral sealed housing, with the main drive assembly 1, the rotary adjustment ring 2, and the synchronization unit 3 all sealed and installed within the decorative housing 10. The decorative housing 10 is then connected to the instrument panel body via snap-fit ​​or threaded connections. This achieves both sealed protection for the main drive assembly 1, the rotary adjustment ring 2, and the synchronization unit 3, and also enables modular installation of the vehicle license plate device, shortening installation time.

[0086] Optionally, the decorative housing 10 is provided with a positioning protrusion 11, and the instrument panel body is provided with a positioning groove on the outer periphery of the mounting groove. After the decorative housing 10 is placed on the mounting groove, the positioning protrusion 11 rests in the positioning groove, which plays a role in pre-positioning and facilitates the locking and assembly operation of the decorative housing 10 and the instrument panel body.

[0087] Based on the same inventive concept, this application also provides a vehicle including the above-described vehicle license plate device.

[0088] Compared with existing technologies, the vehicle provided in this embodiment, by adopting the aforementioned vehicle license plate device, achieves the effect of displaying multiple phone numbers through a single device, eliminating the need to change different license plates. This effectively improves convenience and flexibility, and reduces the cost of license plate usage. Furthermore, by integrating the vehicle license plate device into the dashboard, manual placement of the license plates is eliminated, avoiding the problem of license plates easily falling off or being lost. This improves reliability and enhances the user experience.

[0089] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle license plate device, characterized in that, include: A main drive assembly (1) is connected to the instrument panel body and has a rotating shaft (110); multiple rotating adjustment rings (2) are all sleeved on the outer periphery of the rotating shaft (110), and each rotating adjustment ring (2) has multiple digital display sections (210) distributed along its own circumference, and the multiple rotating adjustment rings (2) are distributed along the axial direction of the rotating shaft (110); a synchronization unit (3) is connected to the rotating shaft (110) of the main drive assembly (1) and can rotate synchronously with the rotating shaft (110), and the synchronization unit (3) has a synchronization component. (310) The synchronization component (310) has a synchronization end (311) that can extend and retract radially along the rotation shaft (110); the synchronization end (311) can be synchronously engaged with the rotation shaft (110) and one of the rotation adjustment rings (2) so that the rotation shaft (110) drives the corresponding rotation adjustment ring (2) to rotate synchronously; the synchronization end (311) can also release the engagement state of the rotation shaft (110) and the rotation adjustment ring (2) to block the transmission of torque from the rotation shaft (110) to the rotation adjustment ring (2).

2. The vehicle license plate device as described in claim 1, characterized in that, The rotating shaft (110) has a first limiting hole (4), and the rotating adjusting ring (2) has a second limiting hole (5) corresponding to the first limiting hole (4). The synchronous end (311) can pass through the first limiting hole (4) and the second limiting hole (5) so that the rotating shaft (110) and the corresponding rotating adjusting ring (2) can be synchronously engaged.

3. The vehicle license plate device as described in claim 1, characterized in that, The synchronization unit (3) further includes: an axial adjustment member (320) that can move along the axial direction of the rotating shaft (110), and the synchronization component (310) is fixed on the axial adjustment member (320); an axial drive component (330) that is connected to the axial adjustment member (320) and can drive the axial adjustment member (320) to move along the axial direction of the rotating shaft (110); and a circumferential limiting component (340) that is disposed between the axial adjustment member (320) and the rotating shaft (110) and can limit the displacement of the axial adjustment member (320) in the circumferential direction of the rotating shaft (110).

4. The vehicle license plate device as described in claim 3, characterized in that, The rotating shaft (110) is a hollow shaft, and the axial adjustment component (320) and the synchronization component (310) are both disposed in the cavity of the rotating shaft (110); the circumferential limiting component (340) is fixed to one of the rotating shaft (110) and the axial adjustment component (320), and the other of the rotating shaft (110) and the axial adjustment component (320) is provided with a first limiting groove (6), and the circumferential limiting component (340) extends into the first limiting groove (6) and slides and adapts to the first limiting groove (6).

5. The vehicle license plate device as described in claim 4, characterized in that, The circumferential limiting assembly (340) includes a circumferential limiting block (341) and a limiting roller (342). The circumferential limiting block (341) is fixed to one of the rotating shaft (110) and the axial adjusting member (320), and one end extends into the first limiting groove (6). The limiting roller (342) passes through the extended end of the circumferential limiting block (341) and is perpendicular to the axial direction of the rotating shaft (110). The side wall of the first limiting groove (6) is provided with a second limiting groove (7). The end of the limiting roller (342) extends into the second limiting groove (7) and rolls with the second limiting groove (7).

6. The vehicle license plate device as described in claim 1, characterized in that, A radial positioning member (8) is supported between the rotating shaft (110) and the rotating adjusting ring (2). The radial positioning member (8) is connected to the rotating shaft (110) or the rotating adjusting ring (2) so that the rotating adjusting ring (2) is coaxially sleeved on the outer periphery of the rotating shaft (110).

7. The vehicle license plate device as described in claim 6, characterized in that, The radial positioning element (8) is provided in multiple ways, and the multiple radial positioning elements (8) are evenly distributed along the circumference of the rotation axis (110). The radial positioning element (8) is an elastic element and is configured with a preload force that causes the rotation adjustment ring (2) to move away from the rotation axis (110) radially.

8. The vehicle license plate device as described in claim 7, characterized in that, The radial positioning element (8) is an arc-shaped elastic sheet, and the arc center line of the radial positioning element (8) is parallel to the axis of the rotating shaft (110). One end of the radial positioning element (8) is connected to one of the rotating shaft (110) and the rotating adjusting ring (2). The other of the rotating shaft (110) and the rotating adjusting ring (2) is provided with a limiting groove (9) that can accommodate the other end of the radial positioning element (8). The limiting groove (9) is a V-shaped groove.

9. The vehicle license plate device as described in claim 1, characterized in that, The vehicle license plate device also includes a decorative housing (10) connected to the instrument panel body, the decorative housing (10) having a display window (1010) extending axially along the rotation axis (110).

10. A vehicle, characterized in that, Includes the vehicle license plate device as described in any one of claims 1-9.

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