CN110143171A - Rotating mechanism and vehicle for display terminal - Google Patents

Abstract

The present invention discloses a rotating mechanism for a display terminal and a vehicle having the same. The rotating mechanism for a display terminal according to an embodiment of the present invention includes: a mounting unit, a clutch unit and a driving unit, and the mounting unit is used for mounting a display terminal; the clutch unit includes a first engaging part and a second engaging part, the first engaging part is connected with the mounting unit; the driving unit has a power output member capable of outputting torque, the output part is connected to the The second engagement portion is detachably connected and can transmit torque, and the first engagement portion is coupled and connected to the second engagement portion for power. Therefore, the rotating mechanism can realize automatic rotation of the display terminal, and further can realize any angle rotation or preset angle rotation of the display terminal on the plane where the display screen is located.

Description

Rotating mechanism and vehicle for display terminal

technical field

The present invention relates to the technical field of vehicles, and in particular, to a rotating mechanism for a display terminal and a vehicle.

Background technique

With the continuous improvement of modern automobiles' requirements for entertainment and intelligence, as well as the increasing popularity of mobile devices, the functions and forms of multimedia are becoming more and more abundant. It has become the mainstream trend of future development, but at present, most of the fixing methods of the touch screen are directly fixed to the instrument panel in a single mode of horizontal screen or vertical screen. This form cannot achieve equal-scale, full-screen display when facing image resources such as pictures and videos of different specifications, and also cannot take into account the personal usage habits of different users.

SUMMARY OF THE INVENTION

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention proposes a rotation mechanism for a display terminal, which can realize automatic rotation of the display terminal, thereby enabling the display terminal to rotate at any angle or at a preset angle on the plane where the display screen is located.

The present invention also provides a vehicle with the rotating mechanism.

A rotating mechanism for a display terminal according to an embodiment of the present invention includes: an installation unit, a clutch unit, and a drive unit, where the installation unit is used to install the display terminal; the clutch unit includes a first engagement portion and a second engagement portion, the first engaging part is connected with the mounting unit; the driving unit has a power output member capable of outputting torque, the output part is detachably connected with the second engaging part and can transmit torque, the first The engaging portion is coupled to the second engaging portion in dynamic coupling.

Therefore, the rotating mechanism can realize automatic rotation of the display terminal, and further can realize any angle rotation or preset angle rotation of the display terminal on the plane where the display screen is located.

According to some embodiments of the present invention, the clutch unit is located outside the housing of the drive unit.

According to some embodiments of the present invention, the clutch unit is located at least partially within the mounting unit.

According to some embodiments of the present invention, the mounting unit includes a rotating disk for mounting the display terminal, the rotating disk is connected with the first joint portion, and the rotating disk faces the first joint. One end of a joint portion has a first groove, and the first joint portion is at least partially located in the first groove.

According to some embodiments of the present invention, the second engaging portion is located at least partially within the first groove.

According to some embodiments of the present invention, the mounting unit includes a rotating disk for mounting the display terminal, and the rotating disk is integrally formed with the first joint portion.

According to some embodiments of the present invention, the mounting unit includes a rotating disk for mounting the display terminal, and the first engaging portion is detachably connected to the rotating disk.

According to some embodiments of the present invention, the housing of the driving unit has a radial holding mechanism, and the second engaging portion is relatively rotatably provided on the radial holding mechanism to be positioned at an upper radial position.

According to some embodiments of the present invention, an inner ring is formed on any one of the mounting unit and the housing of the driving unit, and the housing of the driving unit has an outer ring that is hollowly sleeved on the inner ring, The radial retention mechanism includes the outer ring and the inner ring, the outer ring and the inner ring defining an annular cavity, and at least a portion of the second engagement portion is disposed within the annular cavity.

According to some embodiments of the present invention, the casing of the drive unit includes: a casing body and a casing front cover, the casing front cover is connected to the front end of the casing body and has an annular limit ring, the installation The unit has a mounting shaft passing through the housing, the limiting ring is hollowed over the mounting shaft to define an annular cavity, and at least a portion of the second engaging portion is provided in the annular cavity.

According to some embodiments of the present invention, a radial limit bearing is provided between the limit ring and the at least part of the second engaging portion.

According to some embodiments of the present invention, the output part of the driving unit includes an annular output gear, the output gear is connected with the second engaging part, and the output gear is sleeved outside the shaft sleeve.

According to some embodiments of the present invention, the second engaging portion includes an engaging disc for locking with the second engaging portion and a connecting sleeve connected to an end of the engaging disc facing away from the second engaging portion, so The connecting sleeve is connected with the output gear, and the limiting ring is sleeved outside the connecting sleeve.

The rotating mechanism according to an embodiment of the present invention further includes a base, the driving unit is provided between the base and the installation unit, and the installation unit is pivotally connected to the driving unit and the installation unit. on at least one of the bases.

According to some embodiments of the present invention, the mounting unit includes a rotating disk and a mounting shaft connected with the rotating disk, and the rotating disk is pivoted on the driving unit and the base through the mounting shaft.

According to some embodiments of the present invention, the driving unit is provided in the base, and the mounting shaft passes through the base and the driving unit in sequence to connect with the rotating disk.

According to some embodiments of the present invention, the installation shaft is inserted into the installation unit to be clamped with the installation unit, one end of the installation shaft has a plurality of clamping protrusions evenly distributed along the circumferential direction, the base, Each of the power output members has a plurality of slots through which the plurality of snap-fit protrusions pass.

According to some embodiments of the present invention, the installation unit has an installation hole, an inner wall of the installation hole has a plurality of guide grooves and a plurality of locking grooves connected to the ends of the guide grooves, the locking grooves are connected with the The transition of the guide groove is provided with a limiting convex portion, and the clamping convex portion is clamped between the locking groove and the limiting convex portion.

According to some embodiments of the present invention, the guide groove extends along the axial direction of the installation hole, the locking groove extends along the circumferential direction of the installation hole, and each locking groove corresponds to the guide groove one-to-one Connect and form an L shape.

According to some embodiments of the present invention, it further includes an elastic member, one end of the installation shaft is connected with the installation unit and the other end has a stop portion, the elastic member is sleeved on the installation shaft and stops against the installation shaft between the stopper and the end face of the base.

According to some embodiments of the present invention, the base has an installation groove for accommodating the drive unit, the installation groove has an escape through hole through which the installation shaft passes, and an end of the base has a surrounding At the positioning shaft portion outside the avoidance through hole, the elastic member abuts against the end face of the base through an end face bearing sleeved on the positioning shaft portion.

According to some embodiments of the present invention, the mounting shaft is a hollow shaft.

According to some embodiments of the present invention, the mounting shaft is integrally formed with the rotating disk or is detachably connected.

According to some embodiments of the present invention, the mounting unit has a limit post, the base has a limit slot, the limit post is slidably disposed in the limit slot and is adapted to be connected with the limit Both ends of the slot are matched to limit the travel of the mounting unit.

According to some embodiments of the present invention, the first engaging portion includes a plurality of first locking teeth uniformly distributed along the circumferential direction on the end face of the mounting unit, and the second engaging portion includes a plurality of first locking teeth on the power output member. The end faces of the second locking teeth are evenly distributed along the circumferential direction, and the plurality of first locking teeth and the plurality of second locking teeth are distributed in a circumferential direction and locked with each other in the circumferential direction.

According to some embodiments of the present invention, the first locking tooth and the second locking tooth are both trapezoidal, and each of the first locking tooth and the second locking tooth has two flanks respectively. are inclined planes that are close to each other and are symmetrically distributed.

According to some embodiments of the present invention, the drive unit includes: a casing; a drive motor and a reducer, the drive motor is arranged in the casing, and the drive motor has an output shaft; the reducer is at least one A stage transmission mechanism and at least a worm spur-tooth transmission mechanism, the worm spur-tooth transmission mechanism includes an intermeshing worm and a spur gear, the worm is directly or indirectly connected with the output shaft of the drive motor, and the spur gear is formed as a A power output member, the second engaging portion is formed on the spur gear and protrudes out of the casing.

According to some embodiments of the present invention, the casing includes: a casing body and a casing front cover, the casing body is used to install the drive motor and the reducer; the casing front cover is on the casing body The front end of the gear is connected to the casing body, the spur gear is sandwiched between the casing body and the casing front cover in the axial direction, and the first joint portion protrudes forward out of the casing front cover .

A vehicle according to an embodiment of the second aspect of the present invention includes a display terminal and the rotating mechanism, the display terminal being mounted on the mounting unit of the rotating mechanism.

Description of drawings

FIG. 1 is a schematic diagram of a rotating mechanism for a display terminal, a display terminal, and a fixing bracket according to an embodiment of the present invention.

FIG. 2 is a perspective disassembled schematic diagram of a rotating mechanism for a display terminal, a display terminal, and a fixing bracket according to an embodiment of the present invention.

3 is a cross-sectional view of a base for a rotating mechanism of a display terminal according to an embodiment of the present invention.

4 is a rear view of a base for a rotating mechanism of a display terminal according to an embodiment of the present invention.

FIG. 5 is a schematic perspective view of a driving unit for a rotating mechanism of a display terminal according to an embodiment of the present invention.

6 is a front view of a driving unit for a rotating mechanism of a display terminal according to an embodiment of the present invention.

7 is a cross-sectional view of a driving unit for a rotating mechanism of a display terminal according to an embodiment of the present invention.

8 is a schematic perspective view of an installation unit for a rotating mechanism of a display terminal according to an embodiment of the present invention.

9 is a rear view of an installation unit for a rotating mechanism of a display terminal according to an embodiment of the present invention.

10 is a cross-sectional view of an installation unit for a rotating mechanism of a display terminal according to an embodiment of the present invention.

FIG. 11 is a perspective disassembled schematic diagram of a driving unit for a rotating mechanism of a display terminal according to an embodiment of the present invention.

FIG. 12 is a schematic diagram of a display terminal and a fixing bracket for a rotating mechanism of a display terminal according to another embodiment of the present invention.

Reference number:

Rotating mechanism 100, connecting bracket 400, display terminal 300,

The mounting unit 10, the first engaging portion 11, the guide groove 12, the locking groove 13, the limiting protrusion 14, the limiting column 15, the rotary disk 16, the first locking tooth 111, the first groove 18,

Base 20, installation slot 23, avoidance through hole 232, positioning shaft 25, limit slot 26,

The installation shaft 41, the snap-on protrusion 411, the stopper 412, the elastic piece 42, the end bearing 50, the limit ring 60,

mounting hole a, slot b,

Drive unit 30 , casing 31 , casing body 311 , casing front cover 312 , limit ring 312 a , casing rear cover 313 , shaft 313 a , drive motor 32 , reducer 33 , primary worm 331 , primary gear 332 , secondary worm 333, secondary spur gear 334, second engaging portion 334a, engaging disc a1, connecting sleeve a2, second locking tooth 3341, end bearing 34, current limiting circuit board 35.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

The rotating mechanism 100 for the display terminal 300 according to an embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 12 .

As shown in FIGS. 1 and 2 , the rotating mechanism 100 for the display terminal 300 according to the embodiment of the present invention includes: a base 20 , a mounting unit 10 , a driving unit 30 and a mounting shaft 41 .

The base 20 is used to be fixed to the vehicle body, and the installation unit 10 is used to install the display terminal 300, wherein the installation unit 10 can be fixedly connected to the display terminal 300 through the connection bracket 400 provided on the display terminal 300, and the connection bracket 400 can be integrated The back of the display terminal 300 can also be detachably connected to the display terminal 300, and the connecting bracket 400 and the mounting unit 10 can be matched through a uniformly shaped interface, so that display terminals 300 of different models or sizes can be The interface is connected to the installation unit 10, so that the installation unit 10 has better versatility and wider application range.

The mounting unit 10 has a first engaging portion 11, the driving unit 30 is sandwiched between the base 20 and the mounting unit 10 in the axial direction, the driving unit 30 has a power output member capable of outputting torque, and the power output member has a second engaging portion 334a , the installation shaft is pivotably arranged on the base 20 , and the installation shaft is connected with the installation unit 10 , and the first joint portion 11 and the second joint portion 334 a are axially abutted and connected in power coupling.

It should be noted that the dynamic coupling connection between the first engaging portion 11 and the second engaging portion 334a means that the connection between the first engaging portion 11 and the second engaging portion 334a can satisfy the requirement of stable transmission of torque between the two. . That is to say, during the operation of the driving unit 30, the first engaging portion 11 and the second engaging portion 334a always remain relatively stationary.

Therefore, the rotating mechanism can realize the automatic rotation of the display terminal, and then can realize any angle rotation or preset angle rotation of the display terminal on the plane where the display screen is located, and the rotating mechanism realizes modularization, good versatility, and convenient disassembly. Pack.

The clutch unit is located at least partially within the mounting unit 10 . For example, at least part of the first engaging portion 11 or the second engaging portion 334a is located in the rotating disk 16 as described in the above embodiments, which can significantly reduce the overall axial length of the rotating mechanism 100 , make the arrangement more compact and reasonable and the connection more tightly.

The first engaging portion 11 may be connected with the rotating disk 16 through splines or formed as a whole as described in the above-mentioned embodiments. In other optional embodiments, the first engaging portion 11 is configured such that the rotating disk 16 faces the second The end face of the engaging portion 334a, that is, the first locking teeth 111 is formed on the end face, that is, the disk face of the first engaging portion 11 is omitted, so that the weight of the entire rotating mechanism 100 is light. The first locking teeth 111 can be integrally formed on the end face of the rotating disk 16 facing the second engaging portion 334a, or the locking teeth can be detachably connected to the rotating disk 16, which facilitates a simpler structure of the rotating disk 16 and facilitates molding.

The end of the rotating disc 16 facing the first engaging portion 11 of the clutch unit has a first groove 18, and the first engaging portion 11 is at least partially located in the first groove 18, so as to shorten the axial distance of the entire rotating mechanism 100, preferably, As shown in the figure, the entire first engaging portion 11 is located in the first groove 18, the second engaging portion 334a of the clutch unit is at least partially located in the first groove 18, and further, the entire second engaging portion 334a is located in the first concave In the groove 18, the axial distance of the entire rotating mechanism 100 is further shortened, the overall axial length of the rotating mechanism 100 is short, the arrangement is more compact and reasonable, and the connection is tighter.

Of course, the rotating disk 16 can also be integrally formed with the first joint portion 11 , which can reduce the number of parts to be assembled and the assembly process.

The rotating mechanism 100 further includes a base 20, the driving unit 30 is provided between the base 20 and the mounting unit 10, and the mounting unit 10 is pivotally connected to the driving unit 30 and the base. on at least one of the seats 20. In this way, when the screen angle of the display terminal 300 needs to be rotated and switched, the driving unit 30 works and makes the power output member rotate to drive the first engaging portion 11 and the second engaging portion 334a to rotate synchronously, and drive the installation unit 10 to rotate synchronously to achieve the same The display terminal to which the installation unit 10 is fixedly connected is rotated at any angle or at a preset angle on the plane where the display screen is located.

In some embodiments, the mounting unit 10 includes a rotating disk 16 and a mounting shaft 41 connected with the rotating disk 16 , and the rotating disk 16 is pivoted on the driving unit 30 and the base 20 through the mounting shaft 41 . Thereby, the mounting unit 10 and the drive unit 30 are integrated into the base 20 via the mounting shaft. In this way, the base, the installation unit, and the drive unit are connected in series through the installation shaft, which realizes the modularization of the rotating mechanism and has better versatility.

In order to shorten the axial length of the entire rotating mechanism 100 and enhance the compactness of the entire mechanism, the drive unit 30 is arranged in the base 20, and the installation shaft 41 passes through the base 20 and the drive unit 30 in sequence to connect with the rotating disk 16, In order to connect the three in series and maintain a certain positive pressure between each unit, the torque of the power output member can be stably transmitted to the installation unit 10 through the first joint portion 11 and the second joint portion 334a.

Those skilled in the art can set the target rotation angle of the display terminal 300 as required. Specifically, when the target rotation angle is 90 degrees, the drive motor 32 can drive the display terminal 300 to rotate by 90 degrees and perform the rotation of the display terminal 300 after it is in place. The locking mechanism can be additionally provided with a locking mechanism, or the locking function can be integrated on the drive unit 30. For example, the electric installation shaft adopts a transmission mechanism with a self-locking function, which can realize the automatic rotation of the display terminal 300 and provide users with better audio-visual Enjoy and drive or ride experience.

In the specific embodiment shown in FIG. 1 , the drive unit 30 can be embedded in the base 20 , and the installation shaft includes an installation shaft 41 . The installation shaft 41 passes through the base 20 , the drive unit 30 and is inserted into the installation unit 10 in sequence to It is snapped with the mounting unit 10 . In addition, by inserting the mounting shaft 41 through the base 20 and the driving unit 30 in sequence, and then snapping it into the mounting unit 10, the mounting unit 10 and the driving unit 30 can be quickly integrated on the base 20, which is more convenient for disassembly and assembly, and at the same time saves a lot of money. the installation time of the product.

Specifically, one end of the installation shaft 41 has a plurality of snap-fitting protrusions 411 evenly distributed along the circumferential direction, the base 20 and the power output member both have a plurality of slots b for the plurality of snap-on protrusions 411 to pass through, and the mounting unit 10 has a mounting hole a, the inner wall of the mounting hole a has a plurality of guide grooves 12 and a plurality of locking grooves 13 connected to the ends of the guide grooves 12, and a limit protrusion 14 is provided at the transition between the locking grooves 13 and the guide grooves 12 , the latching convex portion 411 is clamped between the locking groove 13 and the limiting convex portion 14 .

Wherein, the snap-on protrusions 411 protrude outward from the cylindrical sidewall of the mounting shaft 41, and each snap-on protrusion 411 is generally trapezoidal. The base 20 and the power output member also have cylindrical sides for snap-on shafts. The through holes through which the walls pass are provided with trapezoidal slots b through which the clamping protrusions 411 pass. The guide groove 12 provides guidance for the insertion of the snap-on protrusions 411 , and the limiting protrusions 14 limit the circumferential position of the snap-on protrusions 411 when the snap-on protrusions 411 enter the locking grooves 13 , so that the mounting shaft 41 is in the When the mounting unit 10 is rotated, the mounting unit 10 can be stably fixed all the time.

In this way, during installation, the snap-on protrusions 411 of the mounting shaft 41 pass through the base 20 and the slot b of the power output member in sequence, and then the snap-on protrusions 411 enter the guide grooves 12 and slide along the guide grooves 12 . After the part 411 moves in place in the axial direction, turn the mounting shaft 41 towards the direction of the locking groove 13 so that the latching protrusion 411 enters the locking groove 13 and slides along the locking groove 13 until it moves to the end of the locking groove 13, At this time, the limiting protrusion 14 and the locking groove 13 jointly limit the locking protrusion 411 . Thus, the above-mentioned simple and compact structure is adopted to realize the integration of the mounting shaft 41 to the base 20 , the mounting unit 10 and the driving unit 30 .

In the specific embodiment shown in FIGS. 8 , 9 and 10 , the guide grooves 12 extend along the axial direction of the mounting hole a, the locking grooves 13 extend along the circumferential direction of the mounting hole a, and each locking groove 13 is connected to the guide The grooves 12 are connected in one-to-one correspondence and form an L-shape. Therefore, when the installation shaft 41 is installed, the fast installation can be achieved by first inserting and then twisting, and the structure of the locking groove 13 is convenient for processing and production.

In order to further enhance the tightness of the connection between the installation shaft and the installation unit 10 , the installation shaft and the first joint portion 11 may be integrally formed. Those skilled in the art can understand that the installation shaft 41 is not limited to be connected to the installation unit 10 in the above-mentioned manner, and the installation shaft 41 can also be connected to the installation unit 10 by other clamping methods or other detachable installation methods.

In the embodiments shown in FIGS. 1 and 2 , in order to further improve the anti-shake and anti-vibration performance of the display terminal 300 , an elastic buffer structure may be provided in the rotating mechanism 100 . Specifically, the rotating mechanism 100 further includes an elastic member 42 . One end of the installation shaft 41 is connected to the installation unit 10 and the other end has a stopper 412 . The elastic member 42 is sleeved on the installation shaft 41 and abuts against the stopper 412 and the stopper 412 . between the end faces of the base 20 .

Therefore, the arrangement of the elastic member 42 can maintain sufficient positive pressure between the first engaging portion 11 and the second engaging portion 334 a and the transmission mechanism of the driving unit 30 itself, so as to reduce the backlash of the transmission mechanism in the driving unit 30 The micro-vibration and gyration of the display terminal 300 during the driving process caused by the existence of the display terminal 300 reduces the risk of blurred image quality and the damage of the transmission system caused by micro-vibration and beating of teeth in the vibration shock, thereby ensuring the anti-shake and anti-vibration performance of the transmission mechanism. .

In addition, it can not only effectively isolate the impact on the display terminal 300 caused by the road impact transmitted to the rotating mechanism 100 through the base 20 , but also isolate the external impact such as excessive pushing and pulling due to the accidental operation of the customer from being transmitted to the drive through the display terminal 300 . The transmission failure caused by the unit 30 effectively protects the driving unit 30 , and further improves the reliability of the rotating mechanism 100 .

Of course, the present invention is not limited to this, and the method of obtaining positive pressure is not limited to the above-mentioned connection method. The installation shaft 41 can also be limited by one end shoulder, and one end by riveting, shaft retaining ring or nut tightening.

As shown in FIG. 3 and FIG. 4 , the base 20 has an installation groove 23 , and the drive unit 30 is embedded in the installation groove 23 with one end abutting against the bottom of the installation groove 23 , and the installation groove 23 has an escape for the installation shaft 41 to pass through. Through hole 232 , the end of casing 31 has positioning shaft portion 25 surrounding the avoidance through hole 232 . Specifically, the elastic member 42 may be a compression spring, and at this time, the positioning shaft portion 25 can function as a spring seat to provide a central positioning for the elastic member 42 . Adding an end bearing 34 between the contact end surface of the spring and the base 20 can not only improve the axial bearing capacity of the rotating mechanism 100 , but also reduce the friction torque loss of the contact end surface of the spring and the base 20 .

In addition, the casing can provide support for the pivoting of the power output member, that is to say, the casing also has a hollow shaft sleeve, the power output member is pivotably sleeved on the hollow shaft sleeve, and the installation shaft is pivotably sleeved on the hollow shaft. inside the set.

In order to facilitate the circuit arrangement of the display terminal 300, the installation shaft 41 is a hollow shaft, and the installation shaft 41, the driving unit 30 and the installation unit 10 together form a hollow hollow structure. In this way, the distributed lines of the rotating mechanism 100 can be concentrated in the hollow structure, so that the line layout is more beautiful and safe.

As shown in FIG. 9 , the mounting unit 10 has a limit post 15 , the base 20 has a limit slot 26 , and the limit post 15 is slidably disposed in the limit slot 26 and is suitable for matching with both ends of the limit slot 26 In order to limit the travel of the installation unit 10 . In this way, the in-position locking function can be realized in combination with the electronic control components. When the display terminal 300 rotates by 90°, the limit post 15 runs to the end of the limit slot 26, the drive motor 32 of the drive unit 30 is locked, the current increases, and the control The system can detect the locked-rotor signal and the gyroscope built in the display terminal 300 transmits an in-position signal, the control system recognizes the in-position, and powers off the drive motor 32, the transmission of the power system is interrupted, and the system is locked in position.

As shown in FIG. 11 , the drive unit 30 includes: a casing 31, a drive motor 32 and a reducer 33, the drive motor 32 is arranged in the casing 31, and the drive motor 32 has an output shaft; the reducer 33 is at least a primary transmission mechanism and At least the worm spur gear transmission mechanism includes a worm gear and a spur gear that mesh with each other, the worm screw is directly or indirectly connected with the output shaft of the drive motor 32, and the second engaging portion 334a is formed on the spur gear and protrudes from the casing. 31 outside.

Specifically, the drive motor 32 is a rotary drive motor 32, the output shaft is a rotatable drive motor 32 shaft capable of outputting torque, at least one of the reducer 33 and the drive motor 32 has a self-locking function, and the reducer 33 can be a first-stage The transmission mechanism can also be a secondary transmission mechanism or a tertiary transmission mechanism, and the transmission mechanism includes at least a worm straight tooth transmission mechanism. In the specific embodiment shown in the figure, when the reducer 33 is a two-stage transmission mechanism, the reducer 33 can be composed of a worm helical gear transmission mechanism and a worm straight gear transmission mechanism, and the worm helical gear transmission mechanism The worm 331 and the first-stage helical gear 332. The worm spur gear transmission mechanism includes a second-stage worm 333 and a second-stage spur gear 334 that mesh with each other. The first-stage worm 331 is connected to the output shaft of the drive motor 32. The gears 332 are coaxially arranged and fixedly connected, and the secondary spur gear 334 is formed as a power output member.

The display terminal 300 needs to rotate at a very slow speed of about 6-10 r/min, which requires the reducer 33 to have a relatively large transmission ratio, about 10-2000. The use of the above-mentioned worm spur gear transmission mechanism has the following advantages: compact structure, small volume, light weight; stable transmission, low noise, high transmission ratio, and obvious deceleration effect.

It can be understood that the drive unit 30 of the present invention is not limited to adopting an electric drive mode, and may also be a pneumatic, hydraulic or magnetic drive mode. The reducer 33 is not limited to the transmission mechanism mentioned in the above specific embodiment, and may also include planetary gears Transmission mechanism, bevel gear transmission mechanism, etc.

In some embodiments, the casing 31 includes: a casing body 311 and a casing front cover 312 . The casing body 311 is used for installing the drive motor 32 and the reducer 33 ; the casing front cover 312 is at the front end of the casing body 311 and the casing body 311 In connection, the spur gear is sandwiched between the casing body 311 and the casing front cover 312 in the axial direction, and the first joint portion 11 extends forwardly out of the casing front cover 312 .

In this way, the front cover 312 of the casing can provide an axial limit for the spur gear; and when the reducer 33 needs to be repaired, the meshing condition of the spur gear and the worm can be observed by removing the front cover 312 of the casing, or the straight gear can be directly replaced. Gear, easy to disassemble.

As shown in FIG. 5 , the casing 31 of the driving unit 30 has a radial holding mechanism, and the second engaging portion 334a is rotatably provided on the radial holding mechanism to limit the position in the radial direction. The radial holding mechanism is used to limit the radial offset of at least part of the rotating mechanism, so as to prevent the rotating mechanism 100 from generating radial offset during operation, so that the rotating mechanism 100 can still maintain stable operation after long-term operation.

In the embodiment shown in FIG. 12 , the casing 31 of the driving unit 30 remains stationary after being installed on the vehicle body. The casing 31 of the driving unit 30 has two outer rings and an inner ring arranged in an empty sleeve. The radial holding mechanism includes The outer ring and the inner ring, the outer ring is sleeved outside the inner ring, the outer ring and the inner ring define an annular cavity, at least part of the second joint part 334a is disposed in the annular cavity, and at least part of the second joint part 334a is sleeved in the annular cavity. The inner ring is outside, the inner ring is used to prevent the second engagement portion 334a from being biased radially inward, the outer ring is sleeved at least partially outside the second engagement portion 334a, and the outer ring is used to prevent the second engagement portion 334a from radially outwards Bias.

Specifically, the casing 31 of the drive unit 30 includes: a casing body 311 , a casing rear cover 313 and a casing front cover 312 , the casing rear cover 313 is connected to the casing body 311 , and the casing rear cover 313 has an annular second The shaft portion 313a, the casing front cover 312 is connected with the front end of the casing body 311, and the casing front cover 312 has an annular limit ring 312a, the limit ring 312a is hollowly sleeved outside the second shaft portion 313a to define an annular cavity, At least a portion of the second engaging portion 334a is disposed within the annular cavity. At least part of the second engaging portion 334a is sleeved outside the second shaft portion 313a, the second shaft portion 313a is used to prevent the second engaging portion 334a from being biased radially inward, and the limit ring 312a is sleeved on the second engaging portion 334a At least part of the outer limit ring 312a is used to prevent the second engaging portion 334a from being biased radially outward.

Of course, the present invention is not limited to this, and in the embodiment shown in FIG. 11 , an inner ring may also be formed on the installation unit. Specifically, the casing 31 of the drive unit 30 includes: a casing body 311 and a casing front cover 312, the casing front cover 312 is connected to the front end of the casing body 311, and the casing front cover 312 has an annular limit ring 312a, which is installed The unit 10 has a mounting shaft 41 passing through the casing, the limiting ring 312a is hollowly sleeved outside the mounting shaft 41 to define an annular cavity, and at least part of the second engaging portion 334a is disposed in the annular cavity. At least a portion of the second engaging portion 334a is sleeved outside the mounting shaft 41, the mounting shaft 41 is used to prevent the second engaging portion 334a from being biased radially inward, and the limit ring 312a is sleeved at least partially outside the second engaging portion 334a , the limiting ring 312a is used to prevent the second engaging portion 334a from being biased radially outward.

The output portion of the driving unit 30 includes an annular output gear, which can be the secondary driven spur gear of the above embodiment, the output gear is connected to the second engaging portion 334a, and the output gear is sleeved outside the second shaft portion 313a. The second engaging portion 334a includes an engaging disc a1 for locking with the second engaging portion 334a, and a connecting sleeve a2 connected to an end of the engaging disc a1 facing away from the second engaging portion 334a, the connecting sleeve a2 is connected to the output gear and limited to The position ring 312a is sleeved outside the connecting sleeve a2. In this way, the radially inner and outer sides of the output gear are also respectively limited by the second shaft portion 313a and the limiting ring 312a, so that the output end of the drive unit 30 is not easily affected by external vibrations during operation, preventing tooth beating.

The radial retaining mechanism may also include a radial limit bearing, which is not shown in the figure. A radial limit bearing is provided between the limit ring and at least part of the second engaging portion 334a. A radial limit bearing is provided, so that the inner ring of the radial limit bearing presses the connecting sleeve, the outer ring of the radial limit bearing presses the limit ring, and the radial limit of the radial holding mechanism is more stable.

According to some embodiments of the present invention, the first engaging portion 11 is formed as a plurality of first locking teeth evenly distributed along the circumferential direction on the end face of the mounting unit 10 , and the second engaging portion 334a is formed as a plurality of first locking teeth along the end face of the power output member The second locking teeth are evenly distributed in the circumferential direction, and the plurality of first locking teeth and the plurality of second locking teeth are distributed in a circumferential direction and locked with each other in the circumferential direction. Thus, the first locking teeth cooperate with the second locking teeth to realize the torque transmission of the power output member to the mounting unit 10 .

Further, the first locking tooth 11118 and the second locking tooth 3341 are both trapezoidal, and the two flanks of the first locking tooth 111 and the second locking tooth 3341 gradually approach from the tooth root to the tooth tip. Specifically, the respective two flanks of each of the first locking teeth 111 and the second locking teeth 3341 are inclined surfaces that are close to each other and are symmetrically distributed. In this way, the first locking teeth 111 and the second locking teeth 3341 are both trapezoidal teeth, which reduces the slippage of the first engaging portion 11 and the first engaging portion 11 caused by excessive torque, enhances the stability of power transmission, and makes the The switching of the electric control display terminal 300 is smoother.

As shown in FIG. 12 , in another embodiment of the present invention, the mounting unit 10 has a first groove 18 into which the second engaging portion 334 a is inserted, and the first engaging portion 11 includes a plurality of first grooves 18 provided in the first engaging portion 11 The second engaging portion 334a includes a plurality of key grooves located on the outer side wall of the power output member, and the key grooves and the key teeth form a spline connection. Therefore, when the driving unit 30 is working, the output torque is directly transmitted to the mounting unit 10 through the second engaging portion 334a and the first engaging portion 11, so that the power output member drives the mounting unit 10 to rotate synchronously, thus realizing the display terminal screen. Automatic rotation.

In order to realize the axial limit of the installation unit 10 and eliminate the transmission gap of the drive unit 30, the following structure can be adopted: the installation shaft 41 can be a rotating shaft integrated on the installation unit 10, and the installation shaft 41 passes through the drive unit 30. The axial position is limited by the limiting retaining ring 60 , the limiting retaining ring 60 is hooping the mounting shaft 41 , and a spring may be provided between the limiting retaining ring 60 and the end of the base 20 .

It should be noted that, the above-mentioned embodiments of the installation unit 10 , the installation shaft, and the drive unit 30 can be combined with each other to form more embodiments of the rotating mechanism 100 .

The structure of the driving unit 30 of the rotating mechanism 100 according to the embodiment of the present invention is described below.

As shown in FIG. 11 , the drive unit 30 includes a drive motor 32 and a reducer 33 , the output shaft of the drive motor 32 is connected to the reducer 33 , and the power output member of the reducer 33 has a second engaging portion 334 a .

The worm spur gear reduction mechanism is adopted, which is compact, small in size, light in weight, stable in transmission and low in noise. The entire reduction mechanism has a flexible layout and is easy to route. It is more suitable for the requirements of compact mechanism space and vehicle weight limit. It can also give users a better driving experience.

The included angle between the axis of the driving worm and the axis of the driven spur gear is an acute angle. The included angle between the axis L1 of the driving worm and the axis L2 of the driven spur gear is an acute angle α, which satisfies: 82°≤α≤88°. Further, 84°≤α≤86°, for example, α=85°, and the size of α is determined according to the helix angle of the driving worm.

That is to say, the driving worm and the driven spur gear are not arranged vertically, which can ensure the good meshing state of the driving worm and the driven spur gear, and the transmission efficiency is higher. The processing of the spur gear is convenient, and the worm gear transmission in the related art is improved to the worm gear spur gear transmission, so as to avoid the problem of poor processing performance of the worm gear.

In some embodiments, the reducer 33 is a first-stage transmission mechanism, and the reducer 33 includes: a first-stage worm 331 and a first-stage gear 332 , the first-stage worm 331 is fixedly connected with the output shaft of the driving motor 32 , and the first-stage worm 331 is connected with The primary gear 332 meshes, and the included angle between the axis of the primary worm 331 and the axis of the primary gear 332 is an acute angle. The included angle between the axis L1 of the primary worm 331 and the axis L2 of the primary gear 332 is α, which satisfies: 82°≤α≤88°. Further, 84°≤α≤86°, for example, α=85°, and the size of α is determined according to the helix angle of the first-stage worm 331 . That is to say, the first-stage worm 331 and the first-stage gear 332 are not vertically arranged, so that the meshing state of the first-stage worm 331 and the first-stage gear 332 can be ensured, and the transmission efficiency is higher. The processing of the spur gear is convenient, and the worm gear transmission in the related art is improved to the worm gear spur gear transmission, so as to avoid the problem of poor processing performance of the worm gear.

In other embodiments, as shown in the figures, the secondary transmission mechanism includes: a primary worm 331 , a primary gear 332 , a secondary worm 333 , and a secondary spur gear 334 .

The output shaft of the drive motor 32 is fixedly connected with the first-stage worm 331 , and the first-stage worm 331 can be integrated outside the output shaft of the drive motor 32 .

The first-stage worm 331 meshes with the first-stage gear 332, the included angle between the axis of the first-stage worm 331 and the axis of the first-stage gear 332 is an acute angle, and the included angle α between the axis L1 of the first-stage worm 331 and the axis L2 of the first-stage gear 332, Satisfaction: 82°≤α≤88°, further, 84°≤α≤86°, for example, α=85°, the size of α is determined according to the helix angle of the first-stage worm 331 . That is to say, the first-stage worm 331 and the first-stage gear 332 are not vertically arranged, so that the meshing state of the first-stage worm 331 and the first-stage gear 332 can be ensured, and the transmission efficiency is higher. The processing of the spur gear is convenient, and the worm gear transmission in the related art is improved to the worm gear spur gear transmission, so as to avoid the problem of poor processing performance of the worm gear.

The second-stage worm 333 and the first-stage gear 332 are coaxially arranged, and the second-stage worm 333 and the first-stage gear 332 are spaced apart from each other in the axial direction. The key is connected to the secondary worm 333 .

The secondary spur gear 334 meshes with the secondary worm 333 . The included angle between the axis of the secondary worm 333 and the axis of the secondary spur gear 334 is an acute angle, and the included angle β between the axis L2 of the secondary worm 333 and the axis L3 of the secondary spur gear 334 satisfies: 82°≤β≤88° , and further, 84°≤β≤86°, for example, β=85°, and the size of β is determined according to the helix angle of the secondary worm 333 . That is to say, the secondary worm 333 and the secondary spur gear 334 are not vertically arranged, which can ensure that the meshing state of the secondary worm 333 and the secondary spur gear 334 is good, and the transmission efficiency is higher. The processing of the spur gear is convenient, and the worm gear transmission in the related art is improved to the worm gear spur gear transmission, so as to avoid the problem of poor processing performance of the worm gear.

The axis of the primary worm 331 and the axis of the secondary spur gear 334 are parallel. The axis of the output shaft of the drive motor 32 is parallel to and spaced apart from the axis of the secondary spur gear 334 . Therefore, the arrangement direction of the drive motor 32 can be realized to be parallel to the output direction of the drive unit 30, which is convenient for assembly design.

The worm spur gear reduction mechanism is adopted, which is compact, small in size, light in weight, stable in transmission and low in noise. The entire reduction mechanism has a flexible layout and is easy to route. It is more suitable for the requirements of compact mechanism space and vehicle weight limit. It can also give users a better driving experience.

The primary gear 332 transmits the high-speed rotation of the primary worm 331 to the secondary worm 333. In order to reduce vibration during transmission, the primary gear 332 can be a plastic part, the primary worm 331, the secondary worm 333, and the secondary spur gear 334 is a metal piece.

The secondary spur gear 334 is connected with the first joint portion 11 to realize power output. For example, the secondary spur gear 334 and the first joint portion 11 are formed as a whole. According to the functional requirements of the secondary spur gear 334 and the first joint portion 11, The two can be made of different materials, the secondary spur gear 334 is made of wear-resistant material, and the first joint 11 is made of self-lubricating material.

In the present application, the movement adopts a planetary gear train or a two-stage worm and helical gear transmission system, so that the rotating mechanism 100 has the following advantages: 1) the mechanism is compact, small in size and light in weight; 2) the transmission is stable and the noise is low; 3) the layout is flexible , for easy routing. It is more suitable for the requirements of compact space of the whole vehicle mechanism and the weight limit of the whole vehicle, and can also give users a better driving experience. Moreover, the unique in-position locking system in this application can effectively isolate the transmission system inside the movement from external shocks, which can not only avoid the micro-vibration of the display screen caused by the internal backlash of the transmission system, etc. It can also avoid the damage to the transmission system caused by external impact, and improve the reliability and life of the system.

The following describes a rotation mechanism 100 of a display screen according to a specific embodiment of the present invention with reference to FIG. 1 . Wherein, the display screen may be a touch screen capable of man-machine interaction.

As shown in FIG. 1 , the connection bracket 400 at the rear of the display screen can be fixedly connected with the rotating disk 16 (that is, the mounting unit 10 in the above embodiment) by means of snaps and two screws; the mounting shaft 41 connects the rotating disk in turn. 16. The movement (drive unit 30 ), the base 20 , the spring (that is, the elastic member 42 ), and the end bearing 34 are connected in series, and are limited by the snap connection with the rotary disk 16 and the shoulder at the rear end of the installation shaft 41 . The axial length of the system keeps a certain positive pressure between the components connected in series to realize the system locking. Here, the axial limit between the components is realized. The method of obtaining the positive pressure can also use one end shoulder in addition to the scheme in this paper. Limit, one end is realized by riveting, shaft retaining ring or nut tightening. The rotary disk 16 and the movement are connected and twisted through the end teeth; the movement and the base 20 are limited by the shaft shoulders and ribs, and are pressed and fixed by the positive pressure between the two. The two are fixedly connected by other fixing methods; an end face bearing 34 is added between the end faces of the spring and the base 20 in contact, so as to improve the axial bearing capacity of the system, it can reduce the friction torque between the spring and the end face of the base 20 during operation. loss. The rear of the rotary disk 16 is provided with a limit post 15, and the end face of the base 20 is designed with a 90° escape track (ie, limit slot 26) at the corresponding position, and the two cooperate to achieve 90° in-position locking.

1) The power transmission route of the rotating system: the core, after decelerating and increasing the torque of the output torque of the driving motor 32, transmits the torque to the rotating disk 16 through the end face teeth of its own power output member, and drives the rotating disk 16 to realize plane rotation, thereby The connecting bracket 400 and the display screen fixed on it are driven to rotate in a plane. When the rotation is 90°, the limit post 15 at the rear of the rotating disk 16 runs to the end of the track, the driving motor 32 is blocked, the current increases, and the control system detects When the locked-rotor signal is reached and the built-in gyroscope of the display screen transmits an in-position signal, the control system recognizes the in-position and powers off the drive motor 32, the transmission of the power system is interrupted, and the system is locked in position;

2) In-position locking and protection system: The in-position locking of this system is guaranteed by the positive pressure exerted by the 07 spring through the 08 end face bearing 34 to the movement and the two toothed connection end faces of the rotary disk 16; the tooth contact surface is large enough The positive pressure of the system can effectively isolate the impact of the road surface transmitted to the system through the base 20 on the display screen, and at the same time, it can also isolate the transmission to the transmission through the display screen due to the accidental operation of the customer (external impact such as excessive push, pull, etc.). The transmission failure caused by the transmission system is effectively protected, and the reliability of the system is further improved. The system does not use the self-locking performance of the worm and helical gears inside the movement to achieve locking, but a separate locking system is designed. The resulting blurred image quality and the risk of damage to the transmission system caused by the vibration and impact of the teeth, thus ensuring the anti-shake and anti-vibration performance of the system.

3) In order to consider the customer's driving experience, the display screen of this system rotates at a very slow speed (about 6-10r/min), which requires the movement to have a larger transmission ratio, about 300-600. The planetary gear reducer 33 or the double worm reduction system of the two-stage worm helical gear can be selected according to the specific structure layout. The hollow structure is designed to facilitate the design of the locking system.

4) The current limiting circuit board 35 is embedded in the rotating system. When the current exceeding the set threshold is detected, the drive motor 32 is powered off, so as to realize the safety anti-pinch and overload protection of the system.

5) In-position and abnormal position control: When the system rotates in place or the display screen encounters external resistance, the anti-pinch indication is activated, all of which depend on the current rise and exceed the design threshold of the current-limiting board. The system will power off the drive motor 32 to achieve this After the drive motor 32 is powered off, the control system will judge whether the display screen is in an abnormal position according to the signal transmitted by the built-in gyroscope of the display screen. If the signal transmitted by the gyroscope indicates that the display screen is in the horizontal screen position or the vertical screen position If the drive motor 32 is powered off, it means that the power is in place. Otherwise, it is determined that the display screen is in an abnormal position. If it is determined that the power of the drive motor 32 is abnormal and the power is blocked, a warning screen will appear to remind the customer to check the foreign objects. The customer chooses to restart the homing.

6) The hollow design of the installation shaft 41 is convenient for wiring, so that the wiring of the wiring harness behind the screen is reasonable and beautiful.

7) This system is a centering rotation system, that is, the rotation center remains unchanged during the rotation process, so the connection bracket 400 with a unified interface can be used to achieve matching and compatibility between terminals of multiple sizes.

8) The system display screen is suspended in the central control, which can make the instrument table more tidy and beautiful.

The rotation mechanism 100 of the display screen of the present application, the system can realize the following functions: 1) automatic switching of the display screen between the two states of horizontal and vertical screen, 2) automatic positioning and locking after rotation in place, 3) system anti-lock Shaking, anti-vibration, 4) system overload protection and safety anti-pinch, 5) multi-size terminal matching compatibility, strong adaptability.

The present invention is mainly used for the rotation mechanism of the display screen; it is also applicable to other electronic products with rotation requirements.

It should be noted that, the above-mentioned embodiments of the installation unit 10 , the installation shaft, and the drive unit 30 can be combined with each other to form more embodiments of the rotating mechanism 100 .

The vehicle according to the second aspect of the present invention includes the display terminal 300 and the installation assembly of the above-mentioned embodiment, the fixing bracket 200 is installed on the body of the vehicle, and the display terminal 300 is installed on the installation unit 10 of the rotating mechanism 100 . Therefore, the vehicle adopts the rotating mechanism 100 for adjusting the display terminal 300 with anti-shake, anti-vibration, anti-pinch, and performance, which can not only realize automatic switching between the horizontal and vertical screens, but also provide users with better operation experience and audio-visual Enjoy; at the same time, the automatic rotation has stable and reliable in-position locking and anti-backlash systems, which can effectively avoid the blurring or vibration damage caused by the screen shake caused by the road impact during driving.

It should be noted that, the above-mentioned display terminal 300 may be a multimedia, navigation, and display screen set inside the vehicle. The display terminal 300 is not limited to being integrated on the vehicle when the vehicle leaves the factory, or it may not be set on the vehicle when the vehicle leaves the factory. The display terminal 300 on the center console of the vehicle but can be applied and integrated in the vehicle.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (29)

1. a rotating mechanism for display terminal, is characterized in that, comprising: an installation unit, the installation unit is used to install the display terminal; a clutch unit, the clutch unit includes a first engagement portion and a second engagement portion, the first engagement portion is connected with the mounting unit; and A drive unit, the drive unit has a power output member capable of outputting torque, the output portion is detachably connected to the second engagement portion and can transmit torque, the first engagement portion and the second engagement portion power Coupling connection. 2 . The actuator for adjusting a display terminal according to claim 1 , wherein the clutch unit is located outside the housing of the driving unit. 3 . 3 . The actuator for adjusting a display terminal according to claim 1 , wherein the clutch unit is at least partially located inside the installation unit. 4 . 4 . The actuator for adjusting a display terminal according to claim 3 , wherein the installation unit comprises a rotating disk, and the rotating disk is used for installing the display terminal, and the rotating disk is connected with the first 4. 4 . A joint portion is connected, and an end of the rotary disk facing the first joint portion has a first groove, and the first joint portion is at least partially located in the first groove. 5 . The actuator for adjusting a display terminal according to claim 4 , wherein the second engaging portion is at least partially located in the first groove. 6 . 6 . The actuator for adjusting a display terminal according to claim 1 , wherein the installation unit comprises a rotating disk, the rotating disk is used for installing the display terminal, and the rotating disk is connected with the first A joint is integrally formed. 7 . The rotating mechanism for adjusting a display terminal according to claim 1 , wherein the mounting unit comprises a rotating disk, and the rotating disk is used for mounting the display terminal, and the first engaging part is connected to the rotating disk. 8 . The rotating discs are detachably connected. 8 . The actuator for adjusting a display terminal according to claim 1 , wherein the housing of the driving unit has a radial retaining mechanism, and the second engaging portion is rotatably provided at the radial direction. 9 . to the retaining mechanism to be positioned at the radial upper limit. 9 . The actuator for adjusting a display terminal according to claim 8 , wherein an inner ring is formed on any one of the mounting unit and the housing of the driving unit, and the housing of the driving unit is formed with an inner ring. 10 . The body has an outer ring hollowed over the inner ring, the radial retention mechanism includes the outer ring and the inner ring, the outer ring and the inner ring define an annular cavity, the second engagement At least part of the portion is disposed within the annular cavity. 10. The actuator for adjusting a display terminal according to claim 9, wherein the casing of the driving unit comprises: a casing body and a casing front cover, the casing front cover and the casing body The front ends are connected to each other and have an annular limiting ring, the mounting unit has a mounting shaft passing through the casing, the limiting ring is hollowly sleeved outside the mounting shaft to define an annular cavity, and the second engagement At least part of the portion is disposed within the annular cavity. 11 . The actuator for adjusting a display terminal according to claim 10 , wherein a radial limit bearing is provided between the limit ring and the at least part of the second joint portion. 12 . 12. The actuator for adjusting a display terminal according to claim 10, wherein the output part of the driving unit comprises an annular output gear, the output gear is connected with the second engaging part, and the The output gear is sleeved outside the shaft sleeve. 13 . The actuator for adjusting a display terminal according to claim 12 , wherein the second engaging portion comprises an engaging plate for locking with the second engaging portion and a distance away from the engaging plate. 14 . A connecting sleeve connected to one end of the second engaging portion, the connecting sleeve is connected with the output gear, and the limiting ring is sleeved outside the connecting sleeve. 14 . The rotating mechanism for a display terminal according to claim 1 , further comprising a base, the driving unit is provided between the base and the installation unit, and the installation unit is pivotable. 15 . is rotatably connected to at least one of the drive unit and the base. 15. The rotating mechanism for a display terminal according to claim 1, wherein the mounting unit comprises a rotating disk and a mounting shaft connected with the rotating disk, and the rotating disk is pivoted at the place through the mounting shaft. on the drive unit and the base. 16 . The rotating mechanism for a display terminal according to claim 15 , wherein the driving unit is arranged in the base, and the mounting shaft passes through the base and the driving unit in sequence to connected to the rotating disc. 17 . The rotating mechanism for a display terminal according to claim 16 , wherein the installation shaft is inserted into the installation unit to be clamped with the installation unit, and one end of the installation shaft has a plurality of edges. 18 . For the clamping protrusions evenly distributed in the circumferential direction, the base and the power output member both have a plurality of slots through which the clamping protrusions pass. 18 . The rotating mechanism for a display terminal according to claim 17 , wherein the installation unit has an installation hole, and the inner wall of the installation hole has a plurality of guide grooves and a plurality of guide grooves connected to the ends of the guide grooves. 19 . A plurality of locking grooves are provided, and the transition between the locking grooves and the guide grooves is provided with a limiting protrusion, and the locking protrusion is clamped between the locking groove and the limiting protrusion. 19. The rotating mechanism for a display terminal according to claim 18, wherein the guide groove extends along the axial direction of the installation hole, and the locking groove extends along the circumferential direction of the installation hole, Each of the locking grooves is connected with the guide grooves in a one-to-one correspondence and forms an L-shape. 20 . The rotating mechanism for a display terminal according to claim 15 , further comprising an elastic member, one end of the installation shaft is connected to the installation unit and the other end has a stopper, the elastic member The outer sleeve is on the mounting shaft and abuts between the stopper and the end face of the base. 21 . The rotating mechanism for a display terminal according to claim 15 , wherein the base has an installation groove for accommodating the driving unit, and the installation groove has a hole for the installation shaft to pass through. 22 . an avoidance through hole, the end of the machine base has a positioning shaft part that surrounds the avoidance through hole, and the elastic piece stops with the end face of the base through an end face bearing sleeved on the positioning shaft part arrive. 22. The rotating mechanism for a display terminal according to claim 15, wherein the installation shaft is a hollow shaft. 23 . The rotating mechanism for a display terminal according to claim 15 , wherein the installation shaft is integrally formed with the rotating disk or is detachably connected. 24 . 24. The rotating mechanism for a display terminal according to claim 16, wherein the installation unit has a limit post, the base has a limit slot, and the limit post is slidably provided on the The limit slot is adapted to cooperate with both ends of the limit slot to limit the travel of the installation unit. 25. The rotating mechanism for a display terminal according to any one of claims 1-24, wherein the first engaging portion comprises a plurality of first locks evenly distributed along the circumferential direction on the end face of the mounting unit locking teeth, the second engaging portion includes a plurality of second locking teeth uniformly distributed along the circumferential direction on the end face of the power output member, the plurality of first locking teeth and the plurality of second locking teeth are Circumferentially distributed and interlocked in the circumferential direction. 26. The rotating mechanism for a display terminal according to claim 25, wherein the first locking teeth and the second locking teeth are both trapezoidal, and each of the first locking teeth and The respective two flanks of the second locking teeth are inclined surfaces that are close to each other and are symmetrically distributed. 27. The rotating mechanism for a display terminal according to any one of claims 1-24, wherein the driving unit comprises: chassis; a drive motor, the drive motor is arranged in the casing, and the drive motor has an output shaft; A reducer, the reducer is at least a first-stage transmission mechanism and includes at least a worm spur-tooth transmission mechanism, the worm spur-tooth transmission mechanism includes a worm and a spur gear that mesh with each other, and the worm is directly or indirectly connected to the drive motor. The output shaft is connected, the spur gear is formed as a power output member, and the second engaging portion is formed on the spur gear and protrudes out of the casing. 28. The rotating mechanism for a display terminal according to claim 27, wherein the casing comprises: a casing for installing the drive motor and the reducer; and The front cover of the casing is connected with the casing body at the front end of the casing body, and the spur gear is sandwiched between the casing body and the casing front cover in the axial direction, so the The first engaging portion protrudes forwardly out of the front cover of the casing. 29. A vehicle comprising: display terminal; and The rotating mechanism according to any one of claims 1-28, wherein the display terminal is mounted on the mounting unit of the rotating mechanism.