CN216520368U - Screen adjusting device, display device and vehicle - Google Patents

Abstract

The utility model relates to the technical field of display, and discloses a screen adjusting device, a display device and a vehicle, wherein the screen adjusting device comprises a base, a threaded pipe fitting, a first driving device and a screen mounting support, the screen mounting support is rotatably connected to the base, the first driving device is rotatably mounted on the base, a first output shaft of the first driving device is provided with a first external thread, the threaded pipe fitting is provided with a first internal thread matched with the first external thread, the threaded pipe fitting is in threaded connection with the first output shaft, the threaded pipe fitting is rotatably connected with the screen mounting support, when a screen is adjusted, the first output shaft is rotated to drive the threaded pipe fitting to move on the first output shaft so as to drive the screen mounting support connected with the threaded pipe fitting to rotate, so that the screen on the screen mounting support is finally driven to rotate, and the angle adjustment of the screen is realized. In addition, the position adjustment of the screen can be combined to obtain good screen viewing effect.

Description

Screen adjusting device, display device and vehicle

Technical Field

The utility model relates to the technical field of display, in particular to a screen adjusting device, a display device and a vehicle.

Background

Currently, display devices are applied to more and more occasions, but the screen of the display device is generally fixed, which causes inconvenience for users, for example, the screen is generally set in a vehicle, the existing screen is generally set at a middle position in front of a driving seat and a co-driving seat and is generally fixed, but the fixedly set screen cannot be adjusted in angle, which causes poor user experience.

SUMMERY OF THE UTILITY MODEL

An object of an embodiment of the present invention is to provide a screen adjusting apparatus, a display apparatus, and a vehicle, which are capable of adjusting an angle of a screen.

In order to solve the above technical problem, an embodiment of the present invention provides a screen adjusting device, including a base, a threaded pipe, a first driving device, and a screen mounting bracket;

the screen mounting bracket is rotatably connected to the base, and the first driving device is rotatably mounted on the base; the first driving device comprises a first output shaft, the first output shaft is provided with a first external thread, the threaded pipe fitting is provided with a first internal thread matched with the first external thread, and the threaded pipe fitting is in threaded connection with the first output shaft; the threaded pipe fitting is rotatably connected with the screen mounting bracket.

Preferably, the rotation axis of the screen mounting bracket is parallel to the rotation axis of the first driving device rotating around the base, and the rotation axis of the first output shaft is perpendicular to the rotation axis of the screen mounting bracket and the rotation axis of the first driving device rotating around the base.

Preferably, the first driving device further comprises a first motor worm gear mechanism, and the first output shaft is connected with the first motor worm gear mechanism.

Preferably, the first motor, the worm gear and the worm mechanism include a first motor, a first worm gear and a first worm, the first motor is connected to the first worm, the first worm is engaged with the first worm gear, the first output shaft is mounted on the first worm gear, and a lead angle of the first worm is smaller than an equivalent friction angle between meshing gear teeth of the first worm and the first worm gear.

As a preferred scheme, the screen adjusting device further comprises a supporting seat, a threaded bracket, a guide rod and a second driving device; the second driving device is fixedly arranged on the supporting seat and comprises a second output shaft, the second output shaft is provided with a second external thread, the threaded support is provided with a second internal thread matched with the second external thread, and the threaded support is in threaded connection with the second output shaft; the threaded support is fixedly connected to the base; the base is connected with the guide rod in a sliding manner; the guide rod and the supporting seat are of an integrally formed structure, or the guide rod is fixedly connected with the supporting seat.

Preferably, the second output shaft of the second drive device is parallel to the guide rod.

Preferably, the second driving device further comprises a second motor worm and gear mechanism, and the second output shaft is connected with the second motor worm and gear mechanism.

Preferably, the second motor, the worm gear and the worm mechanism include a second motor, a second worm gear and a second worm, the second motor is connected to the second worm, the second worm is engaged with the second worm gear, the second output shaft is mounted on the second worm gear, and a lead angle of the second worm is smaller than an equivalent friction angle between meshing gear teeth of the second worm and the second worm gear.

Preferably, the screen adjusting device further comprises a third driving device, and the third driving device is used for adjusting the pitch angle of the screen mounting bracket.

In order to solve the same technical problem, an embodiment of the present invention further provides a display device, including a screen and the screen adjusting device, where the screen is mounted on the screen mounting bracket.

In order to solve the same technical problem, the embodiment of the utility model also provides a vehicle comprising the display device.

The vehicle further comprises a control device, and the control device is used for controlling the screen adjusting device to drive the screen to move.

Compared with the prior art, the embodiment of the utility model has the beneficial effects that: the embodiment of the utility model provides a screen adjusting device, which comprises a base, a threaded pipe fitting, a first driving device and a screen mounting bracket, wherein the screen mounting bracket is rotatably connected to the base, the first driving device is rotatably mounted on the base, a first output shaft of the first driving device is provided with a first external thread, the threaded pipe fitting is provided with a first internal thread matched with the first external thread, the threaded pipe fitting is in threaded connection with the first output shaft, the threaded pipe fitting is rotatably connected with the screen mounting bracket, when the screen adjusting device is used, a screen is mounted through the screen mounting bracket, when the screen is adjusted, the threaded pipe fitting in threaded connection with the first output shaft is driven to move on the first output shaft by rotating the first output shaft of the first driving device so as to drive the screen mounting bracket connected with the threaded pipe fitting to rotate, and finally, the screen on the screen mounting bracket is driven to rotate, and realizing the angle adjustment of the screen. Meanwhile, the embodiment of the utility model also correspondingly provides a display device and a vehicle.

Drawings

Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the utility model;

FIG. 2 is a schematic view of another angle of the display device according to the first embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural diagram of a display device according to a second embodiment of the utility model;

fig. 5 is a schematic structural diagram of another angle of the display device according to the second embodiment of the utility model;

FIG. 6 is an enlarged view of a portion of FIG. 5 at B;

fig. 7 is a schematic structural diagram of a touch module according to a first embodiment of the utility model;

wherein, 1, a screen; 2. a base; 3. a threaded fitting; 4. a first driving device; 41. a first output shaft; 42. a first motor worm gear mechanism; 5. a screen mounting bracket; 6. a supporting seat; 7. a threaded support; 8. a second driving device; 81. a second output shaft; 82. a second motor worm gear mechanism; 9. a guide rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1 to 3, a screen adjusting apparatus according to an embodiment of the present invention includes a base 2, a threaded pipe 3, a first driving device 4, and a screen mounting bracket 5;

the screen mounting bracket 5 is rotatably connected to the base 2, and the first driving device 4 is rotatably mounted on the base 2; the first driving device 4 comprises a first output shaft 41, the first output shaft 41 is provided with a first external thread, the threaded pipe fitting 3 is provided with a first internal thread matched with the first external thread, and the threaded pipe fitting 3 is in threaded connection with the first output shaft 41; the threaded fitting 3 is rotatably connected to the screen mounting bracket 5.

In the embodiment of the utility model, when the screen adjusting device is used, the screen 1 is installed through the screen installation support 5, when the screen 1 is adjusted, the first output shaft 41 of the first driving device 4 is rotated to drive the threaded pipe fitting 3 in threaded connection with the first output shaft 41 to move on the first output shaft 41 so as to drive the screen installation support 5 connected with the threaded pipe fitting 3 to rotate, so that the screen 1 on the screen installation support 5 is finally driven to rotate, the angle adjustment, such as left-right swinging, of the screen 1 is realized, different screen positions and angles can be given to different drivers and passengers, and the problem of differentiation of requirements of different people on view, operation, dazzling prevention and the like is solved.

It should be noted that the screen 1 only needs to have a display function, and for example, the screen may be a vehicle-mounted screen, a mobile phone, a tablet computer, and the like, which is not described herein in further detail. In the embodiment of the present invention, a screen adjustment device provided by the present invention is described by taking a vehicle-mounted screen as an example.

As shown in fig. 3, the rotation axis of the screen mounting bracket 5 is parallel to the rotation axis of the first driving device 4 rotating around the base 2, and the rotation axis of the first output shaft 41 is perpendicular to the rotation axis of the screen mounting bracket 5 and the rotation axis of the first driving device 4 rotating around the base 2, respectively. Illustratively, the screen mounting bracket 5 may be rotatably connected to the base 2 by a rotation shaft, and further, the threaded pipe 3 may serve as another rotation shaft of the screen mounting bracket 5, and the two rotation shafts are arranged in parallel. In addition, in an embodiment, the housing of the first driving device 4 may also be rotatably connected to the base 2 through a rotating shaft. Of course, the screen mounting bracket 5 and the first driving device 4 may also be rotatably connected to the base 2 by other manners, which will not be further described herein.

As shown in fig. 3, the first driving device 4 further includes a first motor worm gear 42, and the first output shaft 41 is connected to the first motor worm gear 42. Specifically, the first motor worm gear mechanism 42 includes a first motor, a first worm gear, and a first worm, the first motor is connected to the first worm, the first worm is engaged with the first worm gear, the first output shaft 41 is mounted on the first worm gear, and a lead angle of the first worm is smaller than an equivalent friction angle between the first worm and an engaged gear of the first worm gear. In a specific implementation, the first motor, the first worm wheel and the first worm may be disposed in a housing of the first driving device 4.

The embodiment of the utility model adopts a worm and gear technology, the technology is mature, the motor worm and gear mechanism is low in price, good in reliability, stable in transmission, low in noise and capable of reversely self-locking, and the motor worm and gear mechanism can be self-locked, so that the motor worm and gear mechanism is safer, more stable and more reliable.

It should be noted that, the movement and rotation (including but not limited to front-back, left-right, and up-down movement, including but not limited to rotation around front-back, left-right, and up-down axes) of the screen 1 in each direction can also be realized by adjusting the individual structures, for example, when the base 2 is installed on a slide rail assembly, the movement of the screen 1 along the preset direction can be realized, which will not be further described herein.

Correspondingly, the embodiment of the utility model also provides a display device, which comprises a screen 1 and the screen adjusting device, wherein the screen 1 is arranged on the screen mounting bracket 5.

Correspondingly, the embodiment of the utility model also provides a vehicle comprising the display device.

In an alternative embodiment, the vehicle further comprises a control device for controlling the screen adjustment device to drive the screen 1 to move. In the embodiment of the present invention, the movement of the screen 1 can be conveniently controlled by the control means.

In an optional embodiment, the screen 1 has an adjustment interface, and the adjustment interface is provided with a first preset key; the control device is used for:

and when the first preset key is detected to be triggered, controlling the screen adjusting device to drive the screen 1 to recover to the default position.

In the specific implementation, the screen 1 is provided with an adjusting interface, and the screen can be moved through keys in the screen. In this embodiment, the first preset key realizes "one-key homing", for example, by clicking the first preset key, the screen 1 may be controlled to be restored to a default position, and the default position may be set according to an actual use requirement, which is not further described herein.

In an optional implementation mode, the screen is provided with an adjusting interface, and the adjusting interface is provided with a second preset key; the control device is used for:

when detecting that the second preset key is pressed for a long time, recording the current position of the screen 1 as a memory position;

and when the second preset key is detected to be pressed for a short time, controlling the screen adjusting device to drive the screen 1 to move to the memory position.

In this embodiment, the second preset key is used as a "memory key", for example, by pressing the second preset key for a long time, the current position can be memorized, and when the second preset key is pressed for a short time, the screen 1 can be controlled to move to the position.

Referring to fig. 7, in an optional implementation, the vehicle further includes a steering wheel, a touch module is disposed on the steering wheel, and the touch module includes at least one touch key; the control device is used for:

responding to an activation instruction, and activating the touch module;

and when the touch key is triggered, controlling the screen adjusting device to drive the screen 1 to move according to a control instruction corresponding to the touch key.

In this embodiment, activating the touch module activates the adjustment screen function of the steering wheel, for example, the adjustment screen function of the steering wheel may be activated by voice wake-up, or the adjustment screen function of the steering wheel may be activated synchronously when the user clicks the screen 1 to enter the adjustment interface. The touch keys in this embodiment can control the keys of the screen 1 to swing forward, backward, leftward, rightward, and the like, respectively. In addition, the touch key can also be a memory key, the current position can be memorized by pressing the memory key for a long time, and the screen 1 can be controlled to move to the position when the memory key is pressed for a short time.

In an alternative embodiment, the control device is configured to:

recognizing a current gesture;

determining a gesture control instruction corresponding to the current gesture according to the current gesture and a mapping relation between a preset gesture and a gesture control instruction;

and controlling the screen adjusting device to drive the screen 1 to move according to the gesture control instruction corresponding to the current gesture.

In specific implementation, the gesture can be detected through equipment such as a shooting device, and a signal acquired by the shooting device is sent to the control device for recognition. In the embodiment of the present invention, the preset gesture may be a static hand gesture or a continuous motion of the hand. In a specific application, a control instruction corresponding to a preset gesture may be preconfigured, and when the preset gesture is detected during use, the screen adjusting device is controlled to drive the screen 1 to move according to the control instruction corresponding to the preset gesture. Illustratively, when a hand gesture in which 1 finger points to the left and the other fingers are closed is detected, the screen adjusting device is controlled to drive the screen 1 to turn to a left limit position. For another example, when detecting that the open palm moves to the left, the screen adjusting device is controlled to drive the screen 1 to rotate to the left, and when the palm stops moving, the screen adjusting device is controlled to drive the screen 1 to stop. Of course, the number of the preset gestures is not limited, and the specific gestures of the preset gestures may be set according to actual use requirements, which is not further described herein.

In an alternative embodiment, the control device is configured to:

recognizing a current voice signal;

determining a voice control instruction corresponding to the current voice signal according to the current voice signal and a mapping relation between a pre-configured voice signal and the voice control instruction;

and controlling the screen adjusting device to drive the screen 1 to move according to the voice control instruction corresponding to the current voice signal.

In a specific implementation, a voice signal may be detected by a microphone or the like, and a signal collected by the microphone is sent to the control device for recognition. The driver, the co-driver or other passengers can control the screen adjusting device to drive the screen 1 to move through voice, and the user experience is greatly improved. In addition, the position of the user who utters the voice can be identified through the sound zone identification technology, and when the user needs to watch the screen 1, the screen 1 is controlled to move to a better watching position through the voice.

Illustratively, when a voice instruction sent by a user in a passenger driving area is detected, controlling the screen adjusting device to drive the screen to move from a first position to a second position; the second position is a position of the screen 1 facing the passenger compartment;

and controlling the screen adjusting device to drive the screen 1 to move to the first position in response to the end of the interaction.

In a specific implementation, a switch may be disposed on the screen 1, the switch controls the sound zone control screen function, when the sound zone control screen function is turned on, if a user in the copilot area inputs a voice instruction, the screen 1 automatically rotates to a second position at the current first position, i.e., a position facing the copilot area, and a specific angle of the second position may be set according to an actual use requirement, which is not further described herein. After the voice interaction is finished, the screen adjusting device is controlled to drive the screen 1 to move to the position before the instruction is received, i.e. the first position, and of course, the screen 1 may also be controlled to move after the voice interaction is finished for a preset time, which is not described herein any more.

In an alternative embodiment, the control device is configured to:

identifying a user when it is detected that the user enters a driving area;

determining a user memory position corresponding to a user according to a mapping relation between the user and a user memory position which is stored in advance;

controlling the screen adjusting device to drive the screen 1 to move to a user memory position corresponding to the user;

and controlling the screen 1 to display a preset welcome picture.

In the embodiment of the utility model, the user can be identified through the camera, and certainly, the user can also be identified through a card swiping mode and the like. Illustratively, when a user enters a vehicle, the screen 1 controls the screen 1 to move to a user memory position corresponding to the user according to a pre-configured mapping relationship between the user and the user memory position, the mapping relationship between the user and the user memory position can be set by the user, for example, by triggering a preset "memory key" to record a current user and a current position, and the user can adjust the position of the screen 1 to the last time when using the vehicle next time. Similarly, a seat memory function, a steering wheel memory function and the like can be further arranged on the vehicle, so that a user can directly use the seat position and the steering wheel position when the vehicle is used last time without readjustment.

In an alternative embodiment, the control device is configured to:

detecting human eyes and determining the gazing direction of the human eyes;

and controlling the screen adjusting device to drive the screen to move according to the human eye gazing direction.

In practical application, the person in the vehicle can adjust the sitting posture of the person in the vehicle, and the watching effect of the screen can be changed along with the change of the sitting posture. In the embodiment of the utility model, the shooting device can be adopted to track human eyes, the shooting device sends the collected signals to the control device for recognition, the control device automatically adjusts the angle and the position of the screen 1 according to the recognized gaze direction of the human eyes, illustratively, when a driver adjusts the sitting posture, the sight line of the driver changes, and at the moment, the control device controls the screen adjusting device to drive the screen to move, so that the driver obtains a good watching effect, the screen does not need to be adjusted manually, the user experience is greatly improved, and the driving safety of the driver is improved.

Example two

As shown in fig. 4 to 6, the screen adjusting device of the present embodiment is different from the first embodiment in that the screen adjusting device of the present embodiment further includes a supporting base 6, a threaded bracket 7, a guide rod 9 and a second driving device 8; the second driving device 8 is fixedly installed on the supporting seat 6, the second driving device 8 comprises a second output shaft 81, the second output shaft 81 is provided with a second external thread, the threaded support 7 is provided with a second internal thread matched with the second external thread, and the threaded support 7 is in threaded connection with the second output shaft 81; the threaded support 7 is fixedly connected to the base 2; the base 2 is connected with the guide rod 9 in a sliding manner. The guide rod 9 and the support seat 6 are independent structures and are fixedly connected with each other, or the guide rod 9 and the support seat 6 are integrally formed.

In the embodiment of the present invention, the base 2 serves as a sliding platform, the guide rod 9 plays a guiding and supporting role, and the guide rod 9 is arranged in parallel with the second output shaft 81. In the specific implementation, by rotating the second output shaft 81 of the second driving device 8, the threaded bracket 7 in threaded connection with the second output shaft 81 is driven to move on the second output shaft 81, so as to drive the base 2 to move along the axial direction of the second output shaft 81, and finally drive the screen 1 to move back and forth. In practical use, the screen 1 can be independently adjusted in position such as front-back movement, the screen 1 can be independently adjusted in angle such as left-right swinging, and the screen can be further adjusted in position and angle in combination to meet the requirements of users on sight, manual operation, screen glare prevention and the like.

In the embodiment shown in fig. 6, the second driving device 8 can be fixedly connected to the supporting base 6 through a housing of the supporting base.

As shown in fig. 6, the second driving device 8 further includes a second motor worm gear 82, and the second output shaft 81 is connected to the second motor worm gear 82. Specifically, the second motor worm and gear mechanism 82 includes a second motor, a second worm gear and a second worm, the second motor is connected to the second worm, the second worm is engaged with the second worm gear, the second output shaft 81 is mounted on the second worm gear, and a lead angle of the second worm is smaller than an equivalent friction angle between meshing gear teeth of the second worm and the second worm gear. In a specific implementation, the second motor, the second worm wheel and the second worm may be disposed in a housing of the second driving device 8.

The embodiment of the utility model adopts a worm and gear technology, the technology is mature, the motor worm and gear mechanism is low in price, good in reliability, stable in transmission, low in noise and capable of reversely self-locking, and the motor worm and gear mechanism can be self-locked, so that the motor worm and gear mechanism is safer, more stable and more reliable.

In an alternative embodiment, the screen adjustment device further comprises a third driving device (not shown in the figures) for adjusting the pitch angle of the screen mounting bracket 5. For example, the third driving device may be connected to the supporting base 6, and drive the supporting base 6 to drive the screen 1 on the screen mounting bracket 5 to adjust the pitch angle. For another example, the third driving device is disposed between the screen mounting bracket 5 and the screen 1, and when the pitch angle of the screen 1 needs to be adjusted, the third driving device can drive the screen 1 to adjust the pitch angle. Of course, the screen 1 may also be driven by other methods to adjust the pitch angle, which will not be described herein.

It should be noted that, the movement and rotation (including but not limited to front-back, left-right, and up-down movement, including but not limited to rotation around front-back, left-right, and up-down axes) of the screen 1 in each direction can also be realized by adjusting the individual structure, for example, when the supporting base 6 is installed on a sliding rail assembly, the movement of the screen 1 along the preset direction can be realized, which will not be further described herein.

Other structures and working principles of this embodiment are the same as those of the first embodiment, and will not be further described herein.

Compared with the prior art, the embodiment of the utility model has the beneficial effects that: the embodiment of the utility model provides a screen adjusting device, which comprises a base 2, a threaded pipe fitting 3, a first driving device 4 and a screen mounting bracket 5, wherein the screen mounting bracket 5 is rotatably connected to the base 2, the first driving device 4 is rotatably mounted on the base 2, a first output shaft 41 of the first driving device 4 is provided with a first external thread, the threaded pipe fitting 3 is provided with a first internal thread matched with the first external thread, the threaded pipe fitting 3 is in threaded connection with the first output shaft 41, the threaded pipe fitting 3 is rotatably connected with the screen mounting bracket 5, when the screen adjusting device is used, a screen 1 is mounted through the screen mounting bracket 5, when the screen 1 is adjusted, the threaded pipe fitting 3 in threaded connection with the first output shaft 41 is driven to move on the first output shaft 41 by rotating the first output shaft 41 of the first driving device 4 so as to drive the screen mounting bracket 5 connected with the threaded pipe fitting 3 to rotate, thereby finally drive screen 1 on the screen installing support 5 and rotate, realize the angle modulation of screen 1, in addition, can also combine the position control to the screen, and then can give different screen position and the angle of different drivers and passenger, solve the differentiation problem of the demand such as different people's the field of vision, operation, anti-dazzling. Meanwhile, the embodiment of the utility model also correspondingly provides a display device and a vehicle.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (19)

1. A screen adjusting device is characterized by comprising a base, a threaded pipe fitting, a first driving device and a screen mounting bracket;

the screen mounting bracket is rotatably connected to the base, and the first driving device is rotatably mounted on the base; the first driving device comprises a first output shaft, the first output shaft is provided with a first external thread, the threaded pipe fitting is provided with a first internal thread matched with the first external thread, and the threaded pipe fitting is in threaded connection with the first output shaft; the threaded pipe fitting is rotatably connected with the screen mounting bracket.

2. A screen adjustment apparatus as defined in claim 1, wherein the axis of rotation of the screen mounting bracket is parallel to the axis of rotation of the first drive means about the base, and the axis of rotation of the first output shaft is perpendicular to the axis of rotation of the screen mounting bracket and the axis of rotation of the first drive means about the base, respectively.

3. The screen adjustment apparatus of claim 1, wherein the first drive further comprises a first motor worm gear mechanism, the first output shaft being coupled to the first motor worm gear mechanism.

4. The screen adjusting apparatus as recited in claim 3, wherein the first motor worm gear mechanism includes a first motor, a first worm wheel, and a first worm, the first motor is connected to the first worm, the first worm is engaged with the first worm wheel, the first output shaft is mounted on the first worm wheel, and a lead angle of the first worm is smaller than an equivalent friction angle between engaging teeth of the first worm and the first worm wheel.

5. The screen adjusting apparatus as claimed in any one of claims 1 to 4, wherein the screen adjusting apparatus further comprises a support base, a screw bracket, a guide rod and a second driving means; the second driving device is fixedly arranged on the supporting seat and comprises a second output shaft, the second output shaft is provided with a second external thread, the threaded support is provided with a second internal thread matched with the second external thread, and the threaded support is in threaded connection with the second output shaft; the threaded support is fixedly connected to the base; the base is connected with the guide rod in a sliding manner; the guide rod and the supporting seat are of an integrally formed structure, or the guide rod is fixedly connected with the supporting seat.

6. A screen adjustment device as defined in claim 5, wherein the second output shaft of the second drive means is parallel to the guide rod.

7. The screen adjustment apparatus of claim 5, wherein the second drive further comprises a second motor worm gear mechanism, the second output shaft being coupled to the second motor worm gear mechanism.

8. The screen adjustment apparatus as recited in claim 7, wherein the second motor worm gear mechanism includes a second motor, a second worm gear, and a second worm, the second motor is connected to the second worm, the second worm is engaged with the second worm gear, the second output shaft is mounted on the second worm gear, and a lead angle of the second worm is smaller than an equivalent friction angle between engaging teeth of the second worm and the second worm gear.

9. The screen adjustment apparatus of any one of claims 1-4, wherein the screen adjustment apparatus further comprises a third drive means for adjusting a pitch angle of the screen mounting bracket.

10. A display device comprising a screen and a screen adjustment device as claimed in any one of claims 1 to 9, the screen being mounted on the screen mounting bracket.

11. A vehicle characterized by comprising the display device according to claim 9.

12. The vehicle of claim 11, further comprising a control device for controlling the screen adjustment device to drive the screen to move.

13. The vehicle of claim 12, characterized in that the screen has an adjustment interface provided with a first preset key; the control device is used for:

and when the first preset key is detected to be triggered, controlling the screen adjusting device to drive the screen to recover to the default position.

14. The vehicle of claim 12, characterized in that the screen has an adjustment interface provided with a second preset key; the control device is used for:

when the second preset key is detected to be pressed for a long time, recording the current position of the screen as a memory position;

and when the second preset key is detected to be pressed for a short time, controlling the screen adjusting device to drive the screen to move to the memory position.

15. The vehicle of claim 12, further comprising a steering wheel, wherein the steering wheel is provided with a touch module, and the touch module comprises at least one touch key; the control device is used for:

responding to an activation instruction, and activating the touch module;

and when the touch key is triggered, controlling the screen adjusting device to drive the screen to move according to a control instruction corresponding to the touch key.

16. The vehicle of claim 12, characterized in that the control device is configured to:

recognizing a current gesture;

determining a gesture control instruction corresponding to the current gesture according to the current gesture and a mapping relation between a preset gesture and a gesture control instruction;

and controlling the screen adjusting device to drive the screen to move according to the gesture control instruction corresponding to the current gesture.

17. The vehicle of claim 12, characterized in that the control means is configured to:

recognizing a current voice signal;

determining a voice control instruction corresponding to the current voice signal according to the current voice signal and a mapping relation between a pre-configured voice signal and the voice control instruction;

and controlling the screen adjusting device to drive the screen to move according to the voice control instruction corresponding to the current voice signal.

18. The vehicle of claim 12, characterized in that the control means is configured to:

identifying a user when it is detected that the user enters a driving area;

determining a user memory position corresponding to a user according to a mapping relation between the user and the user memory position configured in advance;

controlling the screen adjusting device to drive the screen to move to a user memory position corresponding to the user;

and controlling the screen to display a preset welcome picture.

19. The vehicle of claim 12, characterized in that the control means is configured to:

detecting human eyes and determining the gazing direction of the human eyes;

and controlling the screen adjusting device to drive the screen to move according to the human eye gazing direction.

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