Rotating mechanism for a display terminal and a vehicle

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. The mounting unit is used for mounting the display terminal; the clutch unit includes a first engaging portion and a second engaging portion, and the first engaging portion is connected to the mounting unit; the driving unit has a power output member capable of outputting torque, and the output portion is detachably connected to the second engaging portion and can transmit torque, and the first engaging portion is power-coupled to the second engaging portion. Thus, the rotating mechanism can realize the automatic rotation of the display terminal, and further can realize the rotation of the display terminal at any angle or a preset angle in the plane where the display screen is located.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and more particularly, to a rotating mechanism for a display terminal and a vehicle. Background Art

[0002] With the continuous improvement of the requirements for entertainment and intelligence in modern automobiles, as well as the increasing popularity of mobile devices, the functions and forms of multimedia have become increasingly rich. Multifunctional, large-size touch screens that can be interconnected with mobile phones and computers and connected to the Internet have become the mainstream trend of future development. However, at present, most of the fixing methods of touch screens are directly fixed to the instrument panel in a single mode of horizontal or vertical screen. This form cannot achieve proportional and full-screen display when facing image resources such as pictures and videos of different specifications, and at the same time, it cannot take into account the personal usage habits of different users. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, the present invention provides a rotating mechanism for a display terminal, which can realize the automatic rotation of the display terminal, and further can realize the rotation of the display terminal at any angle or a preset angle in the plane where the display screen is located.

[0004] The present invention also provides a vehicle having the rotating mechanism.

[0005] According to an embodiment of the present invention, the rotating mechanism for a display terminal includes: a mounting unit, a clutch unit, and a driving unit. The mounting unit is used to mount the display terminal. The clutch unit includes a first engaging portion and a second engaging portion. The first engaging portion is connected to the mounting unit. The driving unit has a power output member capable of outputting torque. The output portion is detachably connected to the second engaging portion and can transmit torque. The first engaging portion is power-coupled to the second engaging portion.

[0006] Thus, the rotating mechanism can realize the automatic rotation of the display terminal, and further can realize the rotation of the display terminal at any angle or a preset angle in the plane where the display screen is located.

[0007] According to some embodiments of the present invention, the clutch unit is located outside the housing of the driving unit.

[0008] According to some embodiments of the present invention, at least a part of the clutch unit is located inside the mounting unit.

[0009] According to some embodiments of the present invention, the mounting unit includes a rotating disk, which is used to mount the display terminal. The rotating disk is connected to the first engaging portion, and one end of the rotating disk facing the first engaging portion has a first groove, and at least a part of the first engaging portion is located in the first groove.

[0010] According to some embodiments of the present invention, the second engaging portion is at least partially located in the first groove.

[0011] According to some embodiments of the present invention, the mounting unit includes a rotating disk, the rotating disk is used to mount the display terminal, and the rotating disk is integrally formed with the first engaging portion.

[0012] According to some embodiments of the present invention, the mounting unit comprises a rotating disk, the rotating disk is used to mount the display terminal, and the first engaging portion is detachably connected to the rotating disk.

[0013] According to some embodiments of the present invention, the housing of the drive unit has a radial retaining mechanism, and the second engaging portion is relatively rotatably disposed on the radial retaining mechanism to limit radial positioning.

[0014] According to some embodiments of the present invention, an inner ring is formed on any one of the housings of the mounting unit and the driving unit, the housing of the driving unit has an outer ring that is loosely mounted on the inner ring, the radial retaining mechanism includes the outer ring and the inner ring, the outer ring and the inner ring define an annular cavity, and at least a portion of the second joining portion is disposed in the annular cavity.

[0015] 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 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 at least a portion of the second joint portion is disposed in the annular cavity.

[0016] According to some embodiments of the present invention, a radial limiting bearing is provided between the limiting ring and at least a portion of the second engaging portion.

[0017] According to some embodiments of the present invention, the output portion of the driving unit comprises an annular output gear, the output gear is connected to the second engaging portion, and the output gear is sleeved outside the shaft sleeve.

[0018] According to some embodiments of the present invention, the second engaging portion includes a engaging plate for locking with the second engaging portion and a connecting sleeve connected to one end of the engaging plate facing away from the second engaging portion, the connecting sleeve is connected to the output gear, and the limiting ring is arranged outside the connecting sleeve.

[0019] According to an embodiment of the present invention, the rotating mechanism further includes a base, the driving unit is disposed between the base and the mounting unit, and the mounting unit is pivotally connected to at least one of the driving unit and the base.

[0020] According to some embodiments of the present invention, the mounting unit includes a rotating disk and a mounting shaft connected to the rotating disk, and the rotating disk is pivotally arranged on the driving unit and the base through the mounting shaft.

[0021] According to some embodiments of the present invention, the driving unit is arranged inside the base, and the mounting shaft sequentially passes through the base and the driving unit to be connected to the rotating disk.

[0022] According to some embodiments of the present invention, the mounting shaft is inserted into the mounting unit to be snap-connected to the mounting unit. One end of the mounting shaft has a plurality of snap-protrusions evenly distributed in the circumferential direction, and the base and the power output member both have a plurality of slots for the plurality of snap-protrusions to pass through.

[0023] According to some embodiments of the present invention, the mounting unit has a mounting hole. The inner wall of the mounting hole has a plurality of guiding grooves and a plurality of locking grooves connected to the ends of the guiding grooves. A limiting protrusion is provided at the transition between the locking groove and the guiding groove, and the snap-protrusion is stuck between the locking groove and the limiting protrusion.

[0024] According to some embodiments of the present invention, the guiding grooves extend along the axial direction of the mounting hole, and the locking grooves extend along the circumferential direction of the mounting hole. Each locking groove is connected to a corresponding guiding groove one by one and forms an L shape.

[0025] According to some embodiments of the present invention, an elastic member is further included. One end of the mounting shaft is connected to the mounting unit and the other end has a stop portion. The elastic member is sleeved on the mounting shaft and abuts between the stop portion and the end face of the base.

[0026] According to some embodiments of the present invention, the base has a mounting groove for accommodating the driving unit. The mounting groove has an avoidance through-hole for the mounting shaft to pass through. The end of the base has a positioning shaft portion surrounding the outside of the avoidance through-hole, and the elastic member abuts against the end face of the base through a face bearing sleeved on the positioning shaft portion.

[0027] According to some embodiments of the present invention, the mounting shaft is a hollow shaft.

[0028] According to some embodiments of the present invention, the mounting shaft is integrally formed with or detachably connected to the rotating disk.

[0029] According to some embodiments of the present invention, the mounting unit has a limiting post, and the base has a limiting groove. The limiting post is slidably arranged in the limiting groove and is adapted to cooperate with the two ends of the limiting groove to limit the stroke of the mounting unit.

[0030] According to some embodiments of the present invention, the first engaging portion includes a plurality of first locking teeth evenly distributed circumferentially on the end face of the mounting unit, and the second engaging portion includes a plurality of second locking teeth evenly distributed circumferentially on the end face of the power output member. The plurality of first locking teeth and the plurality of second locking teeth are cross-distributed circumferentially and lock with each other circumferentially.

[0031] According to some embodiments of the present invention, both the first locking teeth and the second locking teeth are trapezoidal, and two respective tooth sides of each of the first locking teeth and the second locking teeth are inclined surfaces that are close to each other and symmetrically distributed.

[0032] According to some embodiments of the present invention, the drive unit includes: a housing; a drive motor and a speed reducer. The drive motor is disposed within the housing and has an output shaft. The speed reducer is at least a one-stage transmission mechanism and at least includes a worm and spur gear transmission mechanism. The worm and spur gear transmission mechanism includes a worm and a spur gear that mesh with each other. The worm is directly or indirectly connected to the output shaft of the drive motor, and the spur gear is formed as a power output member. The second engaging portion is formed on the spur gear and extends outside the housing.

[0033] According to some embodiments of the present invention, the housing includes: a housing body and a front housing cover. The housing body is used to mount the drive motor and the speed reducer. The front housing cover is connected to the housing body at the front end of the housing body. The spur gear is axially sandwiched between the housing body and the front housing cover, and the first engaging portion extends forward outside the front housing cover.

[0034] A vehicle according to an embodiment of the second aspect of the present invention includes: a display terminal and the rotating mechanism, and the display terminal is mounted on the mounting unit of the rotating mechanism. Description of the Drawings

[0035] Figure 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.

[0036] Figure 2 is a three-dimensional exploded 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.

[0037] Figure 3 is a cross-sectional view of a base of a rotating mechanism for a display terminal according to an embodiment of the present invention.

[0038] Figure 4 is a rear view of a base of a rotating mechanism for a display terminal according to an embodiment of the present invention.

[0039] Figure 5Schematic perspective view of a driving unit of a rotation mechanism for a display terminal according to an embodiment of the present invention.

[0040] Figure 6 Front view of a driving unit of a rotation mechanism for a display terminal according to an embodiment of the present invention.

[0041] Figure 7 Cross-sectional view of a driving unit of a rotation mechanism for a display terminal according to an embodiment of the present invention.

[0042] Figure 8 Schematic perspective view of a mounting unit of a rotation mechanism for a display terminal according to an embodiment of the present invention.

[0043] Figure 9 Rear view of a mounting unit of a rotation mechanism for a display terminal according to an embodiment of the present invention.

[0044] Figure 10 Cross-sectional view of a mounting unit of a rotation mechanism for a display terminal according to an embodiment of the present invention.

[0045] Figure 11 Schematic exploded perspective view of a driving unit of a rotation mechanism for a display terminal according to an embodiment of the present invention.

[0046] Figure 12 Schematic view of a rotation mechanism for a display terminal, a display terminal, and a fixing bracket according to another embodiment of the present invention.

[0047] Reference numerals:

[0048] Rotation mechanism 100, connection bracket 400, display terminal 300,

[0049] Mounting unit 10, first engaging portion 11, guiding groove 12, locking groove 13, limiting convex portion 14, limiting post 15, rotating disk 16, first locking tooth 111, first groove 18,

[0050] Base 20, mounting groove 23, avoidance through-hole 232, positioning shaft portion 25, limiting groove 26,

[0051] Mounting shaft 41, clamping convex portion 411, stopping portion 412, elastic member 42, end face bearing 50, limiting retaining ring 60,

[0052] Mounting hole a, slot b,

[0053] Drive unit 30, housing 31, housing body 311, front housing cover 312, limit ring 312a, rear housing cover 313, shaft portion 313a, drive motor 32, speed reducer 33, first-stage worm 331, first-stage gear 332, second-stage worm 333, second-stage spur gear 334, second engaging portion 334a, engaging disc a1, connecting sleeve a2, second locking tooth 3341, end face bearing 34, current-limiting circuit board 35. Detailed implementation mode

[0054] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0055] Refer to the following Figures 1 to 12 Describe in detail the rotating mechanism 100 for the display terminal 300 according to an embodiment of the present invention.

[0056] As Figure 1 And Figure 2 As shown, the rotating mechanism 100 for the display terminal 300 according to an embodiment of the present invention includes: a base 20, a mounting unit 10, a drive unit 30, and a mounting shaft 41.

[0057] The base 20 is used to be fixed to the vehicle body, and the mounting unit 10 is used to mount the display terminal 300. The mounting unit 10 can be fixedly connected to the display terminal 300 through a connection bracket 400 provided on the display terminal 300. The connection bracket 400 can be integrated on the back of the display terminal 300 or detachably connected to the display terminal 300. The connection bracket 400 and the mounting unit 10 can be matched through interfaces with the same shape. In this way, display terminals 300 of different models or different sizes can be connected to the mounting unit 10 through a unified interface. In this way, the mounting unit 10 has better versatility and a wider application range.

[0058] The mounting unit 10 has a first engaging portion 11. The drive unit 30 is axially clamped between the base 20 and the mounting unit 10. The drive unit 30 has a power output member capable of outputting torque. The power output member has a second engaging portion 334a. The mounting shaft is pivotally provided on the base 20, and the mounting shaft is connected to the mounting unit 10 and makes the first engaging portion 11 and the second engaging portion 334a axially abut and be power-coupled.

[0059] It should be noted that the power coupling connection between the first engaging portion 11 and the second engaging portion 334a means that the connection method between the first engaging portion 11 and the second engaging portion 334a can meet the requirement of stable torque transmission between the two. That is to say, during the operation of the drive unit 30, the first engaging portion 11 and the second engaging portion 334a always remain relatively stationary.

[0060] Thus, the rotation mechanism can achieve the automatic rotation of the display terminal, and further can achieve the rotation of the display terminal at any angle or a preset angle in the plane where the display screen is located. Moreover, the rotation mechanism is modular, has good versatility, and is convenient for disassembly and assembly.

[0061] The clutch unit is at least partially located within the mounting unit 10. For example, at least a part of the first engaging portion 11 or the second engaging portion 334a as described in the above embodiment is located within the rotating disk 16, which can significantly reduce the overall axial length of the rotation mechanism 100, make the layout more compact and reasonable, and the connection more tight.

[0062] The first engaging portion 11 can be connected to the rotating disk 16 by splines or formed integrally as described in the above embodiment. In some other alternative embodiments, the first engaging portion 11 is configured as the end face of the rotating disk 16 facing the second engaging portion 334a, that is, the first locking teeth 111 are formed on the end face, which means that the disk surface of the first engaging portion 11 is omitted, so that the entire rotation mechanism 100 is light in weight. 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 are detachably connected to the rotating disk 16, which makes the structure of the rotating disk 16 simpler and convenient for molding.

[0063] One end of the rotating disk 16 facing the first engaging portion 11 of the clutch unit has a first groove 18, and at least a part of the first engaging portion 11 is located within the first groove 18 to shorten the axial distance of the entire rotation mechanism 100. Preferably, as shown in the figure, the entire first engaging portion 11 is located within the first groove 18, and at least a part of the second engaging portion 334a of the clutch unit is located within the first groove 18. Further, the entire second engaging portion 334a is located within the first groove 18 to further shorten the axial distance of the entire rotation mechanism 100. The overall axial length of the rotation mechanism 100 is short, the layout is more compact and reasonable, and the connection is more tight.

[0064] Certainly, the rotating disk 16 can also be integrally formed with the first engaging portion 11, which can reduce the number of parts to be assembled and reduce the assembly process.

[0065] The rotation mechanism 100 further includes a base 20, the driving unit 30 is disposed between the base 20 and the mounting unit 10, and the mounting unit 10 is pivotally connected to at least one of the driving unit 30 and the base 20. Thus, when it is necessary to rotate and switch the screen angle of the display terminal 300, the driving unit 30 works and rotates the power output member to drive the first engaging portion 11 and the second engaging portion 334a to rotate synchronously, driving the mounting unit 10 to rotate synchronously, so as to achieve the rotation of the display terminal fixedly connected to the mounting unit 10 at any angle or a preset angle in the plane where the display screen is located.

[0066] In some embodiments, the mounting unit 10 includes a rotating disk 16 and a mounting shaft 41 connected to the rotating disk 16. The rotating disk 16 is pivotally mounted on the driving unit 30 and the base 20 through the mounting shaft 41. Thus, the mounting unit 10 and the driving unit 30 are integrated onto the base 20 through the mounting shaft. In this way, the base, the mounting unit, and the driving unit are connected in series through the mounting shaft, realizing the modularization of the rotating mechanism and having better versatility.

[0067] To shorten the axial length of the entire rotating mechanism 100 and enhance the compactness of the entire mechanism, the driving unit 30 is disposed inside the base 20, and the mounting shaft 41 sequentially passes through the base 20 and the driving unit 30 to be connected to the rotating disk 16, so that the three are connected in series and a certain positive pressure is maintained between the units, so that the torque of the power output member can be stably transmitted to the mounting unit 10 through the first engaging portion 11 and the second engaging portion 334a.

[0068] Those skilled in the art can set the target rotation angle for the rotation of the display terminal 300 as needed. Specifically, when the target rotation angle is 90 degrees, the driving motor 32 can drive the display terminal 300 to rotate 90 degrees and lock the display terminal 300 after reaching the position. A locking mechanism can be additionally provided, or the locking function can be integrated on the driving unit 30. For example, an electric mounting shaft adopts a transmission mechanism with a self-locking function, which can realize the automatic rotation of the display terminal 300 and provide better audio-visual enjoyment and driving or riding experience for users.

[0069] In Figure 1 In the specific embodiment shown, the driving unit 30 can be embedded in the base 20. The mounting shaft includes a mounting shaft 41. The mounting shaft 41 sequentially passes through the base 20 and the driving unit 30 and is inserted into the mounting unit 10 to be snap-connected to the mounting unit 10. In addition, after the mounting shaft 41 sequentially passes through the base 20 and the driving unit 30 and is snapped into the mounting unit 10, the rapid integration of the mounting unit 10 and the driving unit 30 on the base 20 can be realized, which is more convenient for disassembly and assembly, and significantly saves the installation time of the product.

[0070] Specifically, one end of the mounting shaft 41 has a plurality of circumferentially evenly distributed snap-fit protrusions 411. Both the base 20 and the power output member have a plurality of slots b through which the plurality of snap-fit protrusions 411 pass. The mounting unit 10 has a mounting hole a. The inner wall of the mounting hole a has a plurality of guiding grooves 12 and a plurality of locking grooves 13 connected to the ends of the guiding grooves 12. A limiting protrusion 14 is provided at the transition between the locking groove 13 and the guiding groove 12. The snap-fit protrusion 411 is stuck between the locking groove 13 and the limiting protrusion 14.

[0071] Among them, the clamping convex part 411 protrudes outward from the cylindrical side wall of the mounting shaft 41. Each clamping convex part 411 is generally trapezoidal. The base 20 and the power output member also have through holes for the cylindrical side wall of the clamping shaft part to pass through, and trapezoidal slots b for the clamping convex part 411 to pass through are provided in the through holes. The guiding groove 12 guides the insertion of the clamping convex part 411, and the limiting convex part 14 circumferentially limits the clamping convex part 411 when the clamping convex part 411 enters the locking groove 13, so that the mounting shaft 41 can always be stably fixed to the mounting unit 10 when the mounting unit 10 rotates.

[0072] In this way, during installation, the clamping convex part 411 of the mounting shaft 41 sequentially passes through the slots b of the base 20 and the power output member. Then, the clamping convex part 411 enters the guiding groove 12 and slides along the guiding groove 12. When the clamping convex part 411 moves in place axially, the mounting shaft 41 is rotated towards the direction where the locking groove 13 is located so that the clamping convex part 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 convex part 14 and the locking groove 13 jointly limit the clamping convex part 411. Thus, the above simple and compact structure realizes the integration of the mounting shaft 41 with the base 20, the mounting unit 10, and the driving unit 30.

[0073] In Figure 8 , Figure 9 and Figure 10 In the specific embodiments shown, the guiding groove 12 extends along the axial direction of the mounting hole a, and the locking groove 13 extends along the circumferential direction of the mounting hole a. Each locking groove 13 is connected to the guiding groove 12 in a one-to-one correspondence and forms an L shape. Thus, during the installation of the mounting shaft 41, rapid installation can be achieved by using the method of first inserting and then twisting, and the structure of the locking groove 13 is convenient for processing and production.

[0074] In order to further enhance the tightness of the connection between the mounting shaft and the mounting unit 10, the mounting shaft and the first engaging part 11 can be integrally formed. Those skilled in the art can understand that the mounting shaft 41 is not limited to connecting to the mounting unit 10 in the above manner. The mounting shaft 41 can also be connected to the mounting unit 10 by other clamping methods or other detachable mounting methods.

[0075] In Figure 1 and Figure 2 In the embodiments shown, in order to further improve the anti-shake and anti-vibration performance of the display terminal 300, an elastic buffer structure can be provided in the rotating mechanism 100. Specifically, the rotating mechanism 100 further includes an elastic member 42. One end of the mounting shaft 41 is connected to the mounting unit 10 and the other end has a stop portion 412. The elastic member 42 is sleeved on the mounting shaft 41 and abuts between the stop portion 412 and the end face of the base 20.

[0076] Thus, the arrangement of the elastic member 42 can ensure that there is sufficient positive pressure between the first engaging portion 11 and the second engaging portion 334a, as well as within the transmission mechanism of the driving unit 30 itself, so as to reduce the micro-vibration and rotation of the display terminal 300 during driving caused by the backlash in the transmission mechanism of the driving unit 30, and reduce the risk of image blurring and damage to the transmission system caused by micro-vibration and tooth impact during vibration and shock, thereby ensuring the anti-shake and anti-vibration performance of the transmission mechanism.

[0077] In addition, it can not only effectively isolate the impact of road surface transmitted through the base 20 on the display terminal 300 to the rotating mechanism 100, but also isolate the transmission failure caused by external impacts such as excessive pushing and pulling by accidental operations of customers transmitted through the display terminal 300 to the driving unit 30, effectively protecting the driving unit 30 and further improving the reliability of the rotating mechanism 100.

[0078] Of course, the present invention is not limited thereto. The method of obtaining positive pressure is not limited to the above connection method. The mounting shaft 41 can also be limited by a shaft shoulder at one end and riveted, a shaft retaining ring or tightened with a nut at the other end.

[0079] As Figure 3 and Figure 4 shown, the base 20 has a mounting groove 23. The driving unit 30 is embedded in the mounting groove 23 and one end abuts against the bottom of the mounting groove 23. The mounting groove 23 has an avoidance through hole 232 for the mounting shaft 41 to pass through. The end of the housing 31 has a positioning shaft portion 25 surrounding the avoidance through hole 232. The elastic member 42 abuts against the end face of the base 20 through a face bearing 34 sleeved on the positioning shaft portion 25. Specifically, the elastic member 42 can be a compression spring. At this time, the positioning shaft portion 25 can act as a spring seat to provide central positioning for the elastic member 42. Adding a face bearing 34 between the contact end faces of the spring and the base 20 can not only improve the axial load-bearing capacity of the rotating mechanism 100, but also reduce the frictional torque loss at the contact end faces of the spring and the base 20.

[0080] In addition, the housing can provide support for the pivoting of the power output member. That is to say, the housing also has a hollow shaft sleeve. The power output member is pivotally sleeved on the hollow shaft sleeve, and the mounting shaft is pivotally sleeved inside the hollow shaft sleeve.

[0081] To facilitate the wiring arrangement of the display terminal 300, the mounting shaft 41 is a hollow shaft. The mounting shaft 41, the driving unit 30, and the mounting unit 10 together form a hollow structure. In this way, the external wiring of the rotating mechanism 100 can be concentrated in the hollow structure, making the wiring arrangement more beautiful and safe.

[0082] As Figure 9As shown, the installation unit 10 has a limit post 15, and the base 20 has a limit groove 26. The limit post 15 is slidably disposed in the limit groove 26 and is adapted to cooperate with both ends of the limit groove 26 to limit the stroke of the installation unit 10. In this way, the in-place locking function can be realized in combination with the electric control component. When the display terminal 300 rotates 90°, the limit post 15 runs to the end of the limit groove 26, the drive motor 32 of the drive unit 30 is blocked, the current increases, the control system can detect the blocked signal and the gyroscope built in the display terminal 300 transmits the in-place signal. The control system recognizes the in-place, and cuts off the power supply of the drive motor 32, and the power system transmission is interrupted, and the system is in-place locked.

[0083] As Figure 11 shown, the drive unit 30 includes: a housing 31, a drive motor 32, and a speed reducer 33. The drive motor 32 is disposed in the housing 31, and the drive motor 32 has an output shaft; the speed reducer 33 is at least a first-stage transmission mechanism and at least includes a worm straight-tooth transmission mechanism. The worm straight-tooth transmission mechanism includes a worm and a straight gear that mesh with each other. The worm is directly or indirectly connected to the output shaft of the drive motor 32, and a second engaging portion 334a is formed on the straight gear and extends outside the housing 31.

[0084] 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, and at least one of the speed reducer 33 and the drive motor 32 has a self-locking function. The speed reducer 33 can be a first-stage transmission mechanism, or a second-stage transmission mechanism or a third-stage transmission mechanism. The transmission mechanism at least includes a worm straight-tooth transmission mechanism. In the specific embodiment shown in the figure, when the speed reducer 33 is a second-stage transmission mechanism, the speed reducer 33 can be composed of a worm helical-tooth transmission mechanism and a worm straight-tooth transmission mechanism. The worm helical-tooth transmission mechanism includes a first-stage worm 331 and a first-stage helical gear 332 that mesh with each other. The worm straight-tooth transmission mechanism includes a second-stage worm 333 and a second-stage straight gear 334 that mesh with each other. The first-stage worm 331 is connected to the output shaft of the drive motor 32. The second-stage worm 333 is coaxially disposed and fixedly connected to the first-stage helical gear 332, and the second-stage straight gear 334 is formed as a power output member.

[0085] The display terminal 300 needs to rotate at a very slow speed of about 6 - 10 r / min, which requires the speed reducer 33 to have a relatively large transmission ratio of about 10 - 2000. The above-mentioned worm straight-tooth transmission mechanism has the following advantages: compact structure, small volume, light weight; and smooth transmission, low noise, high transmission ratio, and obvious deceleration effect.

[0086] It can be understood that the drive unit 30 of the present invention is not limited to the electric drive mode, and can also be drive modes such as pneumatic, hydraulic or magnetic drive. The speed reducer 33 is not limited to the transmission mechanisms mentioned in the above specific embodiments, and can also include planetary gear transmission mechanisms, bevel gear transmission mechanisms, etc.

[0087] In some embodiments, the housing 31 includes: a housing body 311 and a front housing cover 312 of the housing. The housing body 311 is used to install the drive motor 32 and the speed reducer 33. The front housing cover 312 of the housing is connected to the housing body 311 at the front end of the housing body 311. The spur gear is axially clamped between the housing body 311 and the front housing cover 312, and the first engaging portion 11 extends forward outside the front housing cover 312.

[0088] In this way, the front housing cover 312 of the housing can provide axial limit for the spur gear. Moreover, when it is necessary to overhaul the speed reducer 33, removing the front housing cover 312 can observe the meshing condition of the spur gear and the worm or directly replace the spur gear, which is convenient for disassembly and assembly.

[0089] As Figure 5 shown, the housing 31 of the drive unit 30 has a radial retaining mechanism, and the second engaging portion 334a is rotatably arranged on the radial retaining mechanism for radial limiting. The radial retaining mechanism is used to limit the radial offset of at least part of the rotating mechanism, preventing the rotating mechanism 100 from having a radial offset during operation. In this way, the rotating mechanism 100 can still maintain stable operation after long-term operation.

[0090] In Figure 12 the shown embodiment, the housing 31 of the drive unit 30 is installed on the vehicle body and remains stationary. The housing 31 of the drive unit 30 has two outer rings and inner rings arranged loosely. The radial retaining 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 engaging portion 334a is arranged in the annular cavity. At least part of the second engaging portion 334a is sleeved outside the inner ring. The inner ring is used to prevent the second engaging portion 334a from being radially offset inward. The outer ring is sleeved outside at least part of the second engaging portion 334a. The outer ring is used to prevent the second engaging portion 334a from being radially offset outward.

[0091] Specifically, the housing 31 of the drive unit 30 includes: a housing body 311, a housing back cover 313 and a housing front cover 312, the housing back cover 313 is connected to the housing body 311, and the housing back cover 313 has an annular second shaft portion 313a, the housing front cover 312 is connected to the front end of the housing body 311, and the housing front cover 312 has an annular limiting ring 312a, the limiting ring 312a is sleeved outside the second shaft portion 313a to define an annular cavity, and at least part of the second joint portion 334a is arranged in the annular cavity. At least part of the second joint portion 334a is sleeved outside the second shaft portion 313a, and the second shaft portion 313a is used to prevent the second joint portion 334a from being biased radially inward, and the limiting ring 312a is sleeved outside at least part of the second joint portion 334a, and the limiting ring 312a is used to prevent the second joint portion 334a from being biased radially outward.

[0092] Of course, the present invention is not limited to this. Figure 11 In the illustrated embodiment, an inner ring may also be formed on the mounting unit. Specifically, the housing 31 of the drive unit 30 includes: a housing body 311 and a housing front cover 312, the housing front cover 312 is connected to the front end of the housing body 311, and the housing front cover 312 has an annular limiting ring 312a, the mounting unit 10 has a mounting shaft 41 passing through the housing, the limiting ring 312a is sleeved outside the mounting shaft 41 to define an annular cavity, and at least a portion 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, and the mounting shaft 41 is used to prevent the second engaging portion 334a from being biased radially inward, and the limiting ring 312a is sleeved outside at least a portion of the second engaging portion 334a, and the limiting ring 312a is used to prevent the second engaging portion 334a from being biased radially outward.

[0093] The output portion of the drive unit 30 includes a ring-shaped output gear, which can be a two-stage driven spur gear of the above-mentioned 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 disk a1 for locking with the second engaging portion 334a and a connecting sleeve a2 connected to one end of the engaging disk a1 away from the second engaging portion 334a, the connecting sleeve a2 is connected to the output gear, and the limiting ring 312a is sleeved outside the connecting sleeve a2. In this way, the radial 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, thereby preventing tooth jamming.

[0094] 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 joint portion 334a. For example, a radial limit bearing may be provided between the limit ring and the connecting sleeve. In this way, the inner ring of the radial limit bearing presses against the connecting sleeve, and the outer ring of the radial limit bearing presses against the limit ring, so that the radial limitation of the radial retaining mechanism is more stable.

[0095] According to some embodiments of the present invention, the first engaging portion 11 is formed as a plurality of first locking teeth uniformly distributed along the circumferential direction on the end surface of the mounting unit 10, and the second engaging portion 334a is formed as a plurality of second locking teeth uniformly distributed along the circumferential direction on the end surface of the power output member, and the plurality of first locking teeth and the plurality of second locking teeth are cross-distributed in the circumferential direction and mutually locked in the circumferential direction. Thus, the first locking teeth and the second locking teeth cooperate together to realize the torque transmission from the power output member to the mounting unit 10.

[0096] Furthermore, the first locking tooth 11118 and the second locking tooth 3341 are both trapezoidal, and the two tooth sides of the first locking tooth 111 and the second locking tooth 3341 gradually approach each other from the tooth root to the tooth top. Specifically, the two tooth sides of each first locking tooth 111 and the second locking tooth 3341 are inclined surfaces that are close to each other and symmetrically distributed. In this way, the first locking tooth 111 and the second locking tooth 3341 are both trapezoidal teeth, which reduces the slippage of the first joint part 11 and the first joint part 11 caused by excessive torque, enhances the stability of power transmission, and makes the switching of the electric control display terminal 300 smoother.

[0097] like Figure 12 As shown, in another embodiment of the present invention, the mounting unit 10 has a first groove 18 for the second engaging portion 334a to be inserted, the first engaging portion 11 includes a plurality of key teeth arranged in the first groove 18, and the second engaging portion 334a includes a plurality of key slots located on the outer side wall of the power output member, and the key slots and the key teeth form a spline connection. Thus, 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 automatic rotation of the display terminal screen.

[0098] In order to achieve axial limitation of the mounting unit 10 and eliminate the transmission clearance of the driving unit 30, the following structure may be adopted: the mounting shaft 41 may be a rotating shaft integrated on the mounting unit 10, the mounting shaft 41 passes through the driving unit 30 and is axially limited by a limiting retaining ring 60, the limiting retaining ring 60 clamps the mounting shaft 41 and a spring may be provided between the limiting retaining ring 60 and the end of the base 20.

[0099] It should be noted that the above-mentioned embodiments of the mounting unit 10 , the mounting shaft, and the driving unit 30 can be combined with each other to form more embodiments of the rotating mechanism 100 without being contradictory.

[0100] The structure of the driving unit 30 of the rotating mechanism 100 according to the embodiment of the present invention will be described below.

[0101] like Figure 11As shown, the drive unit 30 includes a drive motor 32 and a speed reducer 33. The output shaft of the drive motor 32 is connected to the speed reducer 33, and the power output member of the speed reducer 33 has a second engagement portion 334a.

[0102] The worm straight gear reduction mechanism is adopted. This mechanism is compact, small in size, light in weight, and has stable transmission and low noise. The entire reduction mechanism has a flexible layout, is convenient for wiring, and is more suitable for the requirements of the vehicle body mechanism with a compact space and a limited vehicle weight. At the same time, it can also give users a better driving experience.

[0103] The angle between the axis of the driving worm and the axis of the driven straight gear is an acute angle. The angle between the axis L1 of the driving worm and the axis L2 of the driven straight gear is an acute angle α, satisfying: 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.

[0104] That is to say, the driving worm and the driven straight gear are not vertically arranged, which can ensure a good meshing state between the driving worm and the driven straight gear and higher transmission efficiency. The processing of the straight gear is convenient. The worm and worm gear transmission in the related technology is improved to worm and straight gear transmission, thus avoiding the problem of poor machining performance of the worm gear.

[0105] In some embodiments, the speed reducer 33 is a single-stage transmission mechanism, and the speed reducer 33 includes a first-stage worm 331 and a first-stage gear 332. The first-stage worm 331 is fixedly connected to the output shaft of the drive motor 32. The first-stage worm 331 meshes with the first-stage gear 332, and the angle between the axis of the first-stage worm 331 and the axis of the first-stage gear 332 is an acute angle. The angle between the axis L1 of the first-stage worm 331 and the axis L2 of the first-stage gear 332 is α, satisfying: 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, which can ensure a good meshing state between the first-stage worm 331 and the first-stage gear 332 and higher transmission efficiency. The processing of the straight gear is convenient. The worm and worm gear transmission in the related technology is improved to worm and straight gear transmission, thus avoiding the problem of poor machining performance of the worm gear.

[0106] In some other embodiments, as shown in the figure, the two-stage transmission mechanism includes a first-stage worm 331, a first-stage gear 332, a second-stage worm 333, and a second-stage straight gear 334.

[0107] Among them, the output shaft of the drive motor 32 is fixedly connected to the first-stage worm 331, and the first-stage worm 331 can be integrated outside the output shaft of the drive motor 32.

[0108] 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. The included angle α between the axis L1 of the first - stage worm 331 and the axis L2 of the first - stage gear 332 satisfies: 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, which can ensure a good meshing state between the first - stage worm 331 and the first - stage gear 332 and higher transmission efficiency. The spur gear is convenient to process. The worm - gear drive in the related technology is improved to a worm - spur - gear drive, thus avoiding the problem of poor machining performance of the worm gear.

[0109] The second - stage worm 333 is coaxially arranged with the first - stage gear 332. The second - stage worm 333 and the first - stage gear 332 are arranged at an axial interval. The second - stage worm 333 and the first - stage gear 332 can be integrally machined, or the first - stage gear 332 can be connected to the second - stage worm 333 through a spline.

[0110] The second - stage spur gear 334 meshes with the second - stage worm 333. The included angle between the axis of the second - stage worm 333 and the axis of the second - stage spur gear 334 is an acute angle. The included angle β between the axis L2 of the second - stage worm 333 and the axis L3 of the second - stage spur gear 334 satisfies: 82°≤β≤88°. Further, 84°≤β≤86°. For example, β = 85°. The size of β is determined according to the helix angle of the second - stage worm 333. That is to say, the second - stage worm 333 and the second - stage spur gear 334 are not vertically arranged, which can ensure a good meshing state between the second - stage worm 333 and the second - stage spur gear 334 and higher transmission efficiency. The spur gear is convenient to process. The worm - gear drive in the related technology is improved to a worm - spur - gear drive, thus avoiding the problem of poor machining performance of the worm gear.

[0111] The axis of the first - stage worm 331 is parallel to the axis of the second - stage spur gear 334. The axis of the output shaft of the drive motor 32 is parallel to and spaced from the axis of the second - stage spur gear 334. Thus, the arrangement direction of the drive motor 32 can be made parallel to the output direction of the drive unit 30, which is convenient for assembly design.

[0112] The worm - spur - gear reduction mechanism is adopted. This mechanism is compact, small in size, light in weight, and has smooth transmission and low noise. The overall reduction mechanism has a flexible layout, is convenient for wiring, and is more suitable for the requirements of the compact space of the vehicle body and the vehicle weight limit. At the same time, it can also give users a better driving experience.

[0113] The first - stage gear 332 transmits the high - speed rotation of the first - stage worm 331 to the second - stage worm 333. In order to reduce the vibration during transmission, the first - stage gear 332 can be a plastic part, and the first - stage worm 331, the second - stage worm 333, and the second - stage spur gear 334 are metal parts.

[0114] The secondary spur gear 334 is connected to the first joint portion 11 to achieve power output. For example, the secondary spur gear 334 and the first joint portion 11 are formed as a single entity. According to the functional requirements of the secondary spur gear 334 and the first joint portion 11, they can be made of different materials. The secondary spur gear 334 is made of wear-resistant material, and the first joint portion 11 is made of self-lubricating material.

[0115] In this application, the movement mechanism adopts a planetary gear train or a two-stage worm and helical gear transmission system, which enables the rotating mechanism 100 to have the following advantages: 1) Compact structure, small size, and light weight; 2) Smooth transmission and low noise; 3) Flexible layout and convenient wiring. It is more suitable for the requirements of a compact vehicle mechanism space and vehicle weight limit, and can also provide a better driving experience for users. Moreover, the unique in-place locking system in this application can effectively isolate the transmission system inside the movement mechanism from external impacts. It can not only avoid the micro-vibration and rotation of the display screen caused by the tooth clearance inside the transmission system, improve the system stability and anti-shake and anti-vibration capabilities, but also avoid the damage of the external impact to the transmission system, and improve the system reliability and service life.

[0116] The following refers to Figure 1 Describe the rotating mechanism 100 of the display screen according to a specific embodiment of the present invention. Among them, the display screen can be a touch screen capable of human-computer interaction.

[0117] As Figure 1 As shown, the connection bracket 400 behind the display screen can be fixedly connected to the rotating disk 16 (that is, the installation unit 10 in the above embodiment) through a buckle and two screws; the installation shaft 41 sequentially connects the rotating disk 16, the movement mechanism (drive unit 30), the base 20, the spring (that is, the elastic member 42), and the end face bearing 34 in series. By the buckle connection with the rotating disk 16 and the shoulder at the end of the installation shaft 41 itself to limit the axial length of the system, a certain positive pressure is maintained between the series-connected components to achieve system locking. Here, in addition to the method in this article, the method of achieving axial limit between each component and obtaining positive pressure can also be achieved by limiting the shoulder at one end and riveting, shaft retaining ring or tightening the nut at the other end. The rotating disk 16 and the movement mechanism are connected and torque-transmitted through end face teeth; the movement mechanism and the base 20 are limited by shoulders and rib positions and are pressed and fixed through the positive pressure between them. Other fixing methods can also be used to fix them; an end face bearing 34 is added between the end face where the spring contacts the base 20. While improving the axial load-bearing capacity of the system, it can reduce the frictional torque loss at the end face where the spring contacts the base 20 during operation. A limit post 15 is provided at the rear of the rotating disk 16, and a 90° clearance track (that is, the limit groove 26) is designed at the corresponding position on the end face of the base 20. The two cooperate to achieve 90° in-place locking.

[0118] 1) Rotation system power transmission route: The movement mechanism decelerates and increases the torque of the output torque of the driving motor 32, and then transmits the torque to the rotating disk 16 through the end face teeth of its own power output component, driving the rotating disk 16 to achieve planar rotation, thereby driving the connection bracket 400 and the display screen fixedly connected thereto to perform planar rotation. When rotating 90°, the limit post 15 at the rear of the rotating disk 16 runs to the end of the track, the driving motor 32 stalls, the current increases, the control system detects the stall signal and the gyroscope built in the display screen transmits the in-place signal, the control system recognizes the in-place, and performs a power-off process on the driving motor 32, the power system transmission is interrupted, and the system is locked in place;

[0119] 2) In-place locking and protection system: The in-place locking of this system is ensured by the positive pressure applied by the 07 spring through the 08 end face bearing 34 to the two-tooth connection end faces of the movement mechanism and the rotating disk 16; The sufficient system positive pressure between the toothed contact surfaces can effectively isolate the impact of the road surface transmitted through the base 20 on the display screen, and at the same time can also isolate the transmission failure caused by the accidental operation of the customer (external impacts such as excessive pushing and pulling) transmitted through the display screen to the transmission system, thereby effectively protecting the transmission system and further improving the reliability of the system. This system does not utilize the self-locking performance of the worm and helical gear inside the movement mechanism to achieve locking, but a separate locking system is designed. This design can effectively prevent the micro-vibration rotation of the display screen caused by the tooth clearance in the movement mechanism, resulting in blurred image quality, and the risk of damage to the transmission system caused by micro-vibration tooth beating during vibration and impact, thereby ensuring the anti-shake and anti-vibration performance of the system.

[0120] 3) To consider the driving experience of the customer, the display screen of this system rotates at an extremely slow speed (about 6 - 10 r / min), which requires the movement mechanism to have a relatively large transmission ratio, about 300 - 600 or so. The planetary gear train reducer 33 or the double-worm reduction system of two-stage worm and helical gear can be selected according to the specific structural layout, and it is designed as a hollow structure to facilitate the design of the locking system.

[0121] 4) This rotation system realizes the safety anti-pinch and overload protection of the system by embedding a current-limiting circuit board 35 and performing a power-off process on the driving motor 32 when detecting a current exceeding the set threshold.

[0122] 5) In-place and abnormal position control: Whether the system rotates in place or the display screen encounters external resistance to cause the anti-pinch indication to start, it is achieved by relying on the current to rise and exceed the design threshold of the current-limiting small board. The system cuts off the power supply to the drive motor 32. After the drive motor 32 is powered off, the control system will judge whether the display screen is in an abnormal position based on the signal transmitted by the gyroscope built into the display screen. If the signal transmitted by the gyroscope indicates that the display screen is in the landscape or portrait position, it means that the power-off of the drive motor 32 is due to reaching the in-place position. Otherwise, it is determined that the display screen is in an abnormal position, and the power-off of the drive motor 32 is due to abnormal obstruction. Then a warning screen will appear to remind the customer to check for foreign objects. After the resistance disappears, it will be restarted and returned to the original position according to the customer's selection.

[0123] 6) The installation shaft 41 is designed with a hollow structure to facilitate wire routing, making the wire routing behind the screen reasonable and beautiful.

[0124] 7) This system is a fixed-center rotation system, that is, the rotation center remains unchanged during the rotation process. Therefore, by using a connection bracket 400 with a unified interface, the matching and compatibility between multi-size terminals can be achieved.

[0125] 8) The display screen of this system floats above the central control, which can make the instrument panel cleaner and more beautiful.

[0126] The rotation mechanism 100 of the display screen of this application can achieve the following functions: 1) automatic switching between the landscape and portrait states of the display screen, 2) automatic positioning and locking after rotation in place, 3) anti-shake and anti-vibration of the system, 4) overload protection and safety anti-pinch of the system, 5) matching and compatibility of multi-size terminals, with strong adaptability.

[0127] 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.

[0128] It should be noted that the above-mentioned various embodiments regarding the installation unit 10, the installation shaft, and the drive unit 30 can be combined with each other under non-conflicting circumstances to form more embodiments regarding the rotation mechanism 100.

[0129] The vehicle according to the second aspect embodiment of the present invention includes: a display terminal 300 and the installation assembly of the above embodiment. The fixed bracket 200 is installed on the vehicle body, and the display terminal 300 is installed on the installation unit 10 of the rotation mechanism 100. Thus, the vehicle adopts the rotation mechanism 100 of the display terminal 300 with anti-shake, anti-vibration, and anti-pinch performance, which can not only realize the automatic switching between the landscape and portrait states of the screen, providing a better operation experience and audio-visual enjoyment for users; at the same time, the automatic rotation respectively has a stable and reliable in-place locking and backlash elimination system, which can effectively avoid the screen jitter caused by road impact during driving, resulting in blurred images or vibration damage.

[0130] It should be noted that the above display terminal 300 can be a multimedia, navigation, or display screen installed inside a vehicle. The display terminal 300 is not limited to being integrated into the vehicle at the time of factory production. It can also be a display terminal that was not installed on the vehicle's console at the time of factory production but can be applied and integrated into the vehicle.

[0131] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. These terms are only used for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0132] 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 implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0133] In the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated as a whole; it can be a mechanical connection, an electrical connection, or capable of communicating with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. 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 circumstances.

[0134] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0135] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0136] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A rotation mechanism for a display terminal, characterized in that, comprising: a mounting unit for mounting the display terminal; the mounting unit is fixedly connected to the display terminal through a connection bracket provided on the display terminal; a clutch unit including a first engaging portion and a second engaging portion, the first engaging portion being connected to the mounting unit; and a driving unit having a power output member capable of outputting torque, an output portion of the driving unit being detachably connected to the second engaging portion and capable of transmitting torque, the first engaging portion being power-coupled to the second engaging portion; the mounting unit includes a rotating disk for mounting the display terminal, the rotating disk being connected to the first engaging portion, and one end of the rotating disk facing the first engaging portion having a first groove, at least a part of the first engaging portion being located in the first groove; the driving unit is used to drive the mounting unit to drive the display terminal to rotate.

2. The rotation mechanism for a display terminal according to claim 1, characterized in that, the clutch unit is located outside the housing of the driving unit.

3. The rotation mechanism for a display terminal according to claim 1, characterized in that, at least a part of the clutch unit is located inside the mounting unit.

4. The rotation mechanism for a display terminal according to claim 3, characterized in that, at least a part of the second engaging portion is located in the first groove.

5. The rotation mechanism for a display terminal according to claim 1, characterized in that, the mounting unit includes a rotating disk for mounting the display terminal, the rotating disk being integrally formed with the first engaging portion.

6. The rotation mechanism for a display terminal according to claim 1, characterized in that, the mounting unit includes a rotating disk for mounting the display terminal, the first engaging portion being detachably connected to the rotating disk.

7. The rotation mechanism for a display terminal according to claim 1, characterized in that, the housing of the driving unit has a radial retaining mechanism, and the second engaging portion is rotatably provided on the radial retaining mechanism for radial positioning.

8. The rotation mechanism for a display terminal according to claim 7, characterized in that, an inner ring is formed on either the mounting unit or the housing of the driving unit, the housing of the driving unit has an outer ring sleeved on the inner ring, the radial retaining mechanism includes the outer ring and the inner ring, and the outer ring and the inner ring define an annular cavity, at least a part of the second engaging portion being provided in the annular cavity.

9. The rotation mechanism for a display terminal according to claim 8, characterized in that, the housing of the driving unit includes: a housing body and a front cover of the housing, the front cover of the housing being connected to the front end of the housing body and having an annular limiting ring, the mounting unit has a mounting shaft passing through the housing, and the limiting ring is sleeved outside the mounting shaft to define an annular cavity, at least a part of the second engaging portion being provided in the annular cavity.

10. The rotating mechanism for a display terminal according to claim 9, It is characterized in that A radial limiting bearing is provided between the limiting ring and at least a portion of the second engaging portion.

11. The rotating mechanism for a display terminal according to claim 9, It is characterized in that The output part of the driving unit comprises an annular output gear, the output gear is connected to the second engaging part, and the output gear is sleeved outside the shaft sleeve.

12. The rotating mechanism for a display terminal according to claim 11, It is characterized in that The second engaging portion includes an engaging disk for locking with the second engaging portion and a connecting sleeve connected to an end of the engaging disk away from the second engaging portion, the connecting sleeve is connected to the output gear, and the limiting ring is sleeved outside the connecting sleeve.

13. The rotating mechanism for a display terminal according to claim 1, It is characterized in that The utility model further comprises a base, wherein the driving unit is arranged between the base and the mounting unit, and the mounting unit is pivotally connected to at least one of the driving unit and the base.

14. The rotating mechanism for a display terminal according to claim 13, It is characterized in that The mounting unit comprises a rotating disk and a mounting shaft connected to the rotating disk, and the rotating disk is pivotally mounted on the driving unit and the base via the mounting shaft.

15. The rotating mechanism for a display terminal according to claim 14, It is characterized in that The driving unit is arranged in the base, and the installation shaft passes through the base and the driving unit in sequence to be connected with the rotating disk.

16. The rotating mechanism for a display terminal according to claim 15, It is characterized in that The installation shaft is inserted into the installation unit to be snap-fitted with the installation unit. One end of the installation shaft has a plurality of snap-fit ​​protrusions evenly distributed along the circumferential direction. The base and the power output member both have a plurality of slots for the plurality of snap-fit ​​protrusions to pass through.

17. The rotating mechanism for a display terminal according to claim 16, It is characterized in that The mounting unit has a mounting hole, the inner wall of the mounting hole has a plurality of guide grooves and a plurality of locking grooves connected to the ends of the guide grooves, a limiting protrusion is provided at the transition between the locking groove and the guide groove, and the clamping protrusion is clamped between the locking groove and the limiting protrusion.

18. The rotating mechanism for a display terminal according to claim 17, It is characterized in that The guide groove extends along the axial direction of the mounting hole, and the locking groove extends along the circumferential direction of the mounting hole. Each locking groove is connected to the guide groove in a one-to-one correspondence and forms an L shape.

19. The rotating mechanism for a display terminal according to claim 14, It is characterized in that It also includes 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 is sleeved on the installation shaft and stops between the stopper and the end surface of the base.

20. The rotating mechanism for a display terminal according to claim 19, It is characterized in that The base has a mounting groove for accommodating the driving unit. The mounting groove has an avoidance through-hole for the mounting shaft to pass through. An end of the base has a positioning shaft portion surrounding the avoidance through-hole. The elastic member abuts against an end face of the base through a face bearing sleeved on the positioning shaft portion.

21. The rotary mechanism for a display terminal according to claim 14, wherein, the mounting shaft is a hollow shaft.

22. The rotary mechanism for a display terminal according to claim 14, wherein, the mounting shaft is integrally formed with or detachably connected to the rotary disk.

23. The rotary mechanism for a display terminal according to claim 15, wherein, the mounting unit has a limit post, and the base has a limit groove. The limit post is slidably disposed in the limit groove and is adapted to cooperate with two ends of the limit groove to limit the stroke of the mounting unit.

24. The rotary mechanism for a display terminal according to any one of claims 1-23, wherein, the first engaging portion includes a plurality of first locking teeth evenly distributed circumferentially on an end face of the mounting unit. The second engaging portion includes a plurality of second locking teeth evenly distributed circumferentially on an end face of the power output member. The plurality of first locking teeth and the plurality of second locking teeth are cross-distributed circumferentially and are locked to each other circumferentially.

25. The rotary mechanism for a display terminal according to claim 24, wherein, both the first locking teeth and the second locking teeth are trapezoidal. Each of the two tooth sides of each first locking tooth and each second locking tooth are inclined surfaces that are close to each other and symmetrically distributed.

26. The rotary mechanism for a display terminal according to any one of claims 1-23, wherein, the driving unit includes: a housing; a driving motor disposed in the housing. The driving motor has an output shaft; a speed reducer which is at least a one-stage transmission mechanism and at least includes a worm and spur gear transmission mechanism. The worm and spur gear transmission mechanism includes a worm and a spur gear that mesh with each other. The worm is directly or indirectly connected to the output shaft of the driving motor. The spur gear is formed as a power output member, and the second engaging portion is formed on the spur gear and extends out of the housing.

27. The rotary mechanism for a display terminal according to claim 26, wherein, the housing includes: a housing body for mounting the driving motor and the speed reducer; and a front housing cover connected to the housing body at the front end of the housing body. The spur gear is axially clamped between the housing body and the front housing cover, and the first engaging portion extends forward out of the front housing cover.

28. A vehicle, wherein, it includes: a display terminal; and the rotary mechanism according to any one of claims 1-27, and the display terminal is mounted on the mounting unit of the rotary mechanism.

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