For adjusting actuators and vehicles of display terminals

Abstract

The present invention discloses an actuator for adjusting a display terminal and a vehicle having the same, wherein the actuator comprises: a mounting unit, the mounting unit being used to mount the display terminal; a clutch unit, the first engaging portion of the clutch unit being connected to the mounting unit, the second engaging portion of the clutch unit being often mutually locked with the first engaging portion; and a driving unit, the output end of the driving unit being connected to the second engaging portion. According to the actuator for adjusting a display terminal of an embodiment of the present invention, the manual rotating display terminal and the automatic rotating display terminal are coupled into a whole through the clutch unit, and the two screen cutting modes do not interfere with each other.

Description

Technical Field

[0001] The present invention belongs to the technical field of display terminal adjustment, and in particular, relates to an actuator for adjusting a display terminal and a vehicle having the actuator. Background Art

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

[0003] Since the structures of the manual mechanism and the electric mechanism are difficult to integrate, in order to solve the above technical problems, related technologies have developed pure manual or electric mechanisms to rotate the vehicle-mounted display terminal. On the one hand, these mechanisms have complex structures, and on the other hand, it is difficult to take into account manual or electric operation habits. In addition, since the vehicle-mounted display terminal is not fixed, it is very easy to shake with the vibration of the entire vehicle, and there is room for improvement. Summary of the invention

[0004] The present invention aims to solve at least one of the existing technical problems. To this end, the present invention provides an actuator for adjusting a display terminal, wherein the actuator has manual and automatic adjustment functions and the two adjustment modes do not interfere with each other.

[0005] The present invention also provides a vehicle having the above-mentioned actuator.

[0006] According to an embodiment of the first aspect of the present invention, an actuator for adjusting a display terminal includes: a mounting unit, the mounting unit is used to mount the display terminal; a clutch unit, a first engaging portion of the clutch unit is connected to the mounting unit, and a second engaging portion of the clutch unit is often locked with the first engaging portion; and a drive unit, an output end of the drive unit is connected to the second engaging portion.

[0007] According to the actuator for adjusting the display terminal of the embodiment of the present invention, the manual rotating display terminal and the automatic rotating display terminal are coupled into a whole through the clutch unit, and the two screen switching modes do not interfere with each other.

[0008] The vehicle according to the second aspect of the present invention comprises a display terminal and the actuator according to the present invention, wherein the actuator is mounted on the vehicle body, and the display terminal is mounted on the mounting unit of the actuator.

[0009] The vehicle according to the embodiment of the present invention has the same advantages as the above-mentioned actuator over the prior art, which will not be described in detail here.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 is an exploded diagram of an actuator according to an embodiment of the present invention;

[0013] Figure 2 is a side view of an actuator after assembly according to one embodiment of the present invention;

[0014] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0015] Figure 4 is a schematic structural diagram of the integration of a second engaging portion and a secondary driven spur gear according to an embodiment of the present invention;

[0016] Figure 5 is a schematic structural diagram of a first joint portion according to an embodiment of the present invention;

[0017] Figure 6 is a schematic structural diagram of a clutch unit according to an embodiment of the present invention;

[0018] Figure 7 is a schematic structural diagram of a clutch unit according to another embodiment of the present invention;

[0019] Figure 8 is a schematic diagram of the structure of the integrated rotating disk and the mounting shaft according to one embodiment of the present invention;

[0020] Fig. 9 yes Figure 8 Sectional view at the middle BB;

[0021] Fig.10 is a partial schematic diagram of the entire actuator of the shaft string device according to one embodiment of the present invention;

[0022] Fig.11 is a side view of an assembled drive unit according to one embodiment of the present invention;

[0023] Fig.12 is an exploded view of a drive unit according to an embodiment of the present invention;

[0024] Fig.13 is an exploded view of a drive unit according to yet another embodiment of the present invention;

[0025] Fig.14 and Fig.15 Schematic diagrams of angle α and angle β are shown respectively;

[0026] Fig.16 is a schematic structural diagram of a driving unit according to another embodiment of the present invention;

[0027] Fig.17 is an exploded view of a drive unit according to another embodiment of the present invention;

[0028] Fig.18 is an exploded diagram of a clutch unit according to an embodiment of the present invention;

[0029] Fig.19 is an exploded view of a drive unit according to an embodiment of the present invention (showing a radial retaining mechanism).

[0030] Reference numerals:

[0031] Actuator 100,

[0032] Mounting bracket 11, cavity 11a, rotating disk 13, first groove 13a, second groove 13b, limiting groove 14, mounting shaft 15,

[0033] The first joint part 21, the second joint part 23, the oil groove 24, the joint plate 25, the connecting sleeve 26,

[0034] Locking groove 25, locking protrusion 27,

[0035] Drive unit 30, power source 31, primary active worm 32, primary driven spur gear 33, secondary active worm 34, secondary driven spur gear 35, gear end face bearing 36, housing body 37a, housing rear cover 37c, housing upper cover 37d, sleeve 37e, housing front cover 37f, axial limit part 37g, partition 37h, avoidance hole 37j, first cavity 37k, second cavity 37m, sleeve 37n, limit ring 37p, limit stop 38,

[0036] Elastic member 40, elastic member end bearing 41, axial limit member 42,

[0037] Base 50,

[0038] Display terminal 200. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Reference below Figure 1-Figure 19 An actuator 100 for adjusting a display terminal 200 according to an embodiment of the present invention is described. The actuator 100 is used to rotate the display terminal 200, such as switching the display terminal 200 between a horizontal screen and a vertical screen, or rotating the display terminal 200 to other angles. The display terminal 200 may be a touch screen, etc.

[0043] like Figure 1-Figure 3 As shown, the actuator 100 for adjusting the display terminal 200 according to an embodiment of the present invention includes: a mounting unit, a clutch unit, and a driving unit 30.

[0044] The mounting unit is used to mount the display terminal 200 , and the display terminal 200 can be fixedly mounted on the mounting unit or the two can be detachably connected.

[0045] refer to Figure 1 , Figure 3 and Fig. 9 The mounting unit may include: a mounting bracket 11, a rotating disk 13 and a mounting shaft 15.

[0046] The mounting bracket 11 is used to mount the display terminal 200. The mounting bracket 11 and the display terminal 200 (with a corresponding interface structure) are fixedly connected by bolts, or the mounting bracket 11 can be integrated on the back of the display terminal 200. The mounting bracket 11 is connected to the rotating disk 13. The mounting bracket 11 and the rotating disk 13 are fixedly connected by a buckle and two screws. Optionally, the mounting bracket 11 can be detachably mounted on the rotating disk 13.

[0047] like Figure 1 , Figure 3 , Fig. 9 As shown, the rotating disk 13 has a first groove 13 a and a second groove 13 b , and the first groove 13 a and the second groove 13 b are respectively located at two ends of the rotating disk 13 .

[0048] The end of the rotating disk 13 facing the first engaging portion 21 of the clutch unit has a first groove 13a, and the first engaging portion 21 is at least partially located in the first groove 13a to shorten the axial distance of the entire actuator 100. Preferably, as Figure 3 As shown, the entire first engaging portion 21 is located in the first groove 13a, and the second engaging portion 23 of the clutch unit is at least partially located in the first groove 13a. Further, the entire second engaging portion 23 is located in the first groove 13a to further shorten the axial distance of the entire actuator 100. The overall axial length of the actuator 100 is short, the arrangement is more compact and reasonable, and the connection is tighter. The display terminal 200 is connected to the mounting unit 10 through the connecting bracket 11, and the second groove 13b is suitable for accommodating and connecting the bracket 11. Specifically, the connecting bracket 11 can be connected to the rotating disk 13 by at least one of the methods of clamping and bolting. The connecting bracket 11 can be formed into a ring shape and include a plurality of connecting claws distributed in a ring shape, and the plurality of connecting claws can be extended into and plugged into the second groove 13b. In this way, not only does the connecting bracket 11 intrude into the rotating disk 13, but the rotating disk 13 can at least partially extend into the cavity 11a defined by the multiple connecting claws and located behind the display terminal. In this way, the space of the installation unit itself behind the display terminal 200 is reasonably utilized, the overall axial length of the actuator 100 is significantly reduced, the layout is more compact and reasonable, and the connection is tighter.

[0049] like Figure 2 and Figure 3 As shown, the rotating disk 13 is dynamically coupled to the first engaging portion 21, and the rotating disk 13 and the first engaging portion 21 are connected via splines. For example, the end surface of the rotating disk 13 facing away from the display terminal 200 is provided with an internal spline, and the end surface of the first engaging portion 21 facing away from the second engaging portion 23 is provided with an external spline.

[0050] Of course, the rotating disk 13 and the first engaging portion 21 may also be formed integrally, which can reduce the number of parts to be assembled and the number of assembly steps.

[0051] like Fig. 9 As shown, the rotating disk 13 may be in the shape of a disk, and a circular through hole is provided in the middle of the rotating disk 13, that is, the rotating disk 13 is annular, and the mounting shaft 15 extends axially from the inner periphery of the rotating disk 13. The rotating disk 13 is connected to the mounting shaft 15, and the mounting shaft 15 and the rotating disk 13 may be formed as one body. Of course, the mounting shaft 15 and the rotating disk 13 may be split and connected by a clamping structure.

[0052] The mounting shaft 15 passes through the clutch unit and the drive unit 30. The mounting shaft 15 is used to string the various components together. The mounting shaft 15 does not transmit power. When the rotating disk 13 rotates, the mounting shaft can rotate or not. The mounting shaft 15 can be a hollow shaft to reduce weight and facilitate wiring. The clutch unit is located outside the housing of the drive unit 30.

[0053] like Figure 6 and Figure 7 As shown, the clutch unit includes a first engaging portion 21 and a second engaging portion 23. The first engaging portion 21 of the clutch unit is connected to the mounting unit. Power can be transmitted between the first engaging portion 21 and the mounting unit. The second engaging portion 23 of the clutch unit is often locked with the first engaging portion 21. When the second engaging portion 23 of the clutch unit is engaged with the first engaging portion 21, they are locked. The first engaging portion 21 is engaged with the second engaging portion 23 and has multiple engaging positions. The mounting unit is configured to be manually rotated to drive the first engaging portion 21 to switch between multiple engaging positions relative to the second engaging portion 23. When the second engaging portion 23 is engaged with the first engaging portion 21, the clutch unit can transmit torque. The second engaging portion 23 and the first engaging portion 21 have multiple engaging positions. For example, multiple engaging positions are formed on the end faces of the first engaging portion 21 and the second engaging portion 23 that are arranged opposite to each other. The output end of the drive unit 30 is coupled to the second engaging portion 23 in power, and the clutch unit is located outside the housing of the drive unit 30.

[0054] Alternatively, the clutch unit includes a first engaging portion 21 and a second engaging portion 23 with end faces opposite to each other, and one of the two end faces of the first engaging portion 21 and the second engaging portion 23 facing each other has a plurality of locking grooves 25, and the other has at least one locking protrusion 27. The actuator 100 may also include a component for providing an axial preload, each locking protrusion being suitable for engaging with at least two locking grooves 25 under the action of the axial preload so that the second engaging portion 23 and the first engaging portion 21 are at least suitable for engaging at two engaging positions distributed in the circumferential direction. When the engaging position is changed, the second engaging portion 23 and the drive unit 30 remain relatively stationary in the axial direction, the first engaging portion 21 moves in the axial direction in a direction away from the second engaging portion 23, the first engaging portion 21 is connected to the mounting unit, and the output end of the drive unit 30 is connected to the second engaging portion 23.

[0055] When the engagement position is changed, the second engagement portion 23 and the drive unit 30 remain relatively stationary in the axial direction, and the first engagement portion 21 moves in the axial direction away from the second engagement portion 23. Thus, the internal components of the drive unit 30 can be prevented from shaking, so that the drive and transmission of the drive unit 30 are more stable.

[0056] The driving unit 30 may be electrically driven, hydraulically driven, pneumatic, etc.

[0057] like Figure 4 As shown, the clutch unit can be located outside the housing of the drive unit 30. In this way, when the clutch unit is assembled, it is not easy to interfere with the various components of the drive unit 30, and it is not necessary to design a separate installation space for the clutch unit in the housing of the drive unit 30, which can simplify the design. Furthermore, since the first engaging portion 21 and the second engaging portion 23 of the clutch unit will rotate relative to each other in the manual mode, if a part of the clutch unit is arranged in the housing of the drive unit 30, problems such as jamming may occur during the operation of the actuator 100.

[0058] The clutch unit is at least partially located inside the mounting unit. For example, at least part of the first engaging portion 21 or the second engaging portion 23 described in the above embodiment is located inside the rotating disk 13, which can significantly reduce the overall axial length of the actuator 100, making the arrangement more compact and reasonable and the connection tighter.

[0059] The first engaging portion 21 and the second engaging portion 23 are usually locked with each other, and the mounting unit is configured to be manually rotated to drive the first engaging portion 21 to rotatably switch between a plurality of engaging positions relative to the second engaging portion 23 .

[0060] When the driving unit 30 is working, the second engaging portion 23 engages with the first engaging portion 21. It can be understood that under normal conditions, the first engaging portion 21 and the second engaging portion 23 engage with each other under the action of the axial preload force, and torque can be transmitted. The driving force is transmitted along the driving unit 30-second engaging portion 23-first engaging portion 21-rotating disk 13-mounting bracket 11-display terminal 200, thereby rotating the display terminal 200 to achieve rotation of the display terminal 200 or switching between horizontal and vertical screens.

[0061] The first engaging portion 21 and the second engaging portion 23 form a circumferential static friction force under the action of the axial preload force, and the circumferential static friction force forms an opening force for the relative rotation of the first engaging portion 21 and the second engaging portion 23. When the torque applied to the first engaging portion 21 is greater than the opening force, the first engaging portion 21 and the second engaging portion 23 rotate relative to each other to change the engagement position; when the torque applied to the first engaging portion 21 is less than the opening force, the first engaging portion 21 and the second engaging portion 23 remain engaged with each other to transmit the torque.

[0062] Specifically, during the operation of the actuator 100 , when the driving unit 30 is not operating and the torque applied to the first engaging portion 21 is greater than the above-mentioned opening force, the second engaging portion 23 rotates relative to the first engaging portion 21 to change the engaging position.

[0063] For example, a torque is manually applied to the display terminal 200 to rotate it, and the torque is transmitted to the first engaging portion 21 through the mounting unit. Since the driving unit 30 is locked when not working, the driving unit 30 is fixedly connected to the second engaging portion 23. When the torque is not greater than the opening force, the first engaging portion 21 and the second engaging portion 23 remain engaged, and the display terminal 200 does not rotate; when the torque is greater than the opening force, the first engaging portion 21 and the second engaging portion 23 rotate relative to each other from a previous engaging position to another engaging position. When the first engaging portion 21 rotates from the first engaging position to the second engaging position relative to the second engaging portion 23, manual rotation of the display terminal 200 can be achieved.

[0064] According to the actuator 100 for adjusting the display terminal 200 of the embodiment of the present invention, the manual rotating display terminal 200 and the automatic rotating display terminal 200 are coupled into a whole through the clutch unit, and the two screen switching modes do not interfere with each other.

[0065] The specific structural form of the clutch unit according to the embodiment of the present invention is described below.

[0066] The clutch unit of the embodiment of the present invention can be used as a part of the actuator 100 of the adjustment display terminal 200, and is used to output the power output by the drive unit 30 of the actuator 100 to the display terminal 200, thereby coupling the manual function with the automatic drive function.

[0067] In one embodiment of the clutch unit, Figure 4-Figure 6 As shown, the clutch unit includes: a first engaging portion 21 and a second engaging portion 23, the end faces of the first engaging portion 21 and the second engaging portion 23 are arranged opposite to each other, and one of the two end faces of the first engaging portion 21 and the second engaging portion 23 facing each other has a plurality of locking grooves 25, and the other of the two end faces of the first engaging portion 21 and the second engaging portion 23 facing each other has at least one locking protrusion 27.

[0068] For example, the end surface of the first engaging portion 21 is provided with a locking groove 25 , and the end surface of the second engaging portion 23 is provided with a locking protrusion 27 ; or, the end surface of the second engaging portion 23 is provided with a locking groove 25 , and the end surface of the first engaging portion 21 is provided with a locking protrusion 27 .

[0069] Each locking protrusion 27 is adapted to engage with at least two locking grooves 25 so that the second engaging portion 23 is adapted to engage with the first engaging portion 21 at least at two engaging positions in the circumferential direction.

[0070] like Figure 4-Figure 6 As shown, the first engaging portion 21 and the second engaging portion 23 may both be annular, and one end face of the first engaging portion 21 and one end face of the second engaging portion 23 are arranged opposite to each other. An end face of one of the first engaging portion 21 and the second engaging portion 23 is provided with an oil groove 24, and the oil groove 24 is used to store lubricating oil to reduce friction. For example, an end face of one of the first engaging portion 21 and the second engaging portion 23 having the locking groove 25 is provided with an oil groove 24, and there may be multiple oil grooves 24, and specifically, multiple oil grooves 24 are provided between two adjacent locking grooves 25.

[0071] One of the two end surfaces of the first engaging portion 21 and the second engaging portion 23 facing each other has a plurality of locking grooves 25, and the other has at least one locking protrusion 27. At least a portion of the locking protrusion 27 extends into the locking groove 25, and when the side surface of the locking protrusion 27 presses against the side wall of the locking groove 25, the locking protrusion 27 engages with the locking groove 25, so that the first engaging portion 21 and the second engaging portion 23 can be engaged. For example, the end surface of the first engaging portion 21 is provided with a locking groove 25, and the end surface of the second engaging portion 23 is provided with a locking protrusion 27; or, the end surface of the second engaging portion 23 is provided with a locking groove 25, and the end surface of the first engaging portion 21 is provided with a locking protrusion 27. For the convenience of description, the following only takes the end surface of the first engaging portion 21 provided with a locking protrusion 27, and the end surface of the second engaging portion 23 provided with a locking groove 25 as an example for further explanation.

[0072] The first engaging portion 21 can be connected to the rotating disk 13 by splines or formed as one piece as described in the above embodiments. In other optional embodiments, the first engaging portion 21 is configured as the end surface of the rotating disk 13 facing the second engaging portion 23, and the locking protrusion 27 is formed on the end surface, that is, the disk surface of the first engaging portion 21 is omitted, so that the weight of the entire actuator 100 is light. The locking protrusion 27 can be integrally formed on the end surface of the rotating disk 13 facing the second engaging portion 23, or the locking protrusion 27 is detachably connected to the rotating disk 13, so that the structure of the rotating disk 13 is simpler and easier to form.

[0073] The plurality of locking grooves 25 are evenly spaced and arranged along the circumference of the second joint portion 23, and the plurality of locking protrusions 27 are evenly spaced and arranged along the circumference of the first joint portion 21. The number of the locking grooves 25 and the locking protrusions 27 are the same, for example, the number of the locking grooves 25 and the locking protrusions 27 are at least three, for example, four. In the embodiment where the number of the locking grooves 25 and the locking protrusions 27 are both four, without considering the processing error, the angle between the midlines of two adjacent locking grooves 25 is 90°. In the initial state, the plurality of locking protrusions 27 are engaged with the plurality of locking grooves 25 in a one-to-one correspondence. When the first joint portion 21 rotates relative to the second joint portion 23 until a certain locking protrusion 27 is engaged with another adjacent locking groove 25, the rotation of the display terminal can be realized.

[0074] Each locking protrusion 27 is adapted to engage with at least two locking grooves 25 so that the second engaging portion 23 is adapted to engage with the first engaging portion 21 at least at two engaging positions. For example, for a certain locking protrusion 27, the locking protrusion 27 can engage with two locking grooves 25, and the angle between the two locking grooves 25 represents an angle of relative rotation of the first engaging portion 21 and the second engaging portion 23.

[0075] like Fig.18 As shown, the locking grooves 25 include multiple groups, each group includes multiple locking grooves 25, and the locking grooves 25 of different groups are staggered along the circumferential direction. When the first engaging portion 21 and the second engaging portion 23 are engaged in one of the engaging positions, the multiple locking protrusions 27 correspond one-to-one to the multiple locking grooves 25 of one group. When the first engaging portion 21 and the second engaging portion 23 are rotated to the other engaging position, the multiple locking protrusions 27 correspond one-to-one to the multiple locking grooves 25 of the other group, wherein the angle between the axes of the two corresponding locking grooves 25 in the two groups is 90°.

[0076] The number of groups of the locking grooves 25 may correspond to the number of positions of the display terminal 200. For example, when the display terminal 200 includes two positions of the horizontal and vertical screens, the locking grooves 25 are 2 groups. For example, the locking grooves 25 include two groups, each group includes three locking grooves 25 evenly spaced apart along the circumferential direction, and the two groups of the locking grooves 25 are staggered along the circumferential direction. For example, each locking groove 25 of the first group is provided with a locking groove 25 of the second group on both sides. In this way, during each rotation process, each locking protrusion 27 only needs to be engaged with one locking groove 25. The first locking groove 25 and the second locking groove 25 are connected to each other so as to prevent the display terminal 200 from falling into another locking groove 25 and not falling into a non-target locking groove 25 during the rotation. The angle between the locking groove 25 of the first group and one of the two locking grooves 25 of the second group is 90°, and the angle between the locking groove 25 of the first group and the other of the two locking grooves 25 of the second group is 30°. The locking protrusions 27 include three, and the three locking protrusions 27 are evenly spaced apart in the circumferential direction. When the three locking protrusions 27 cooperate with the locking grooves 25 of different groups, the rotation of the display terminal 200 can be realized.

[0077] like Figure 4-Figure 6 As shown, the locking groove 25 and the locking protrusion 27 both have an arc-shaped cross-section, and the root width of the locking protrusion 27 is greater than the width of the top of the locking protrusion 27, the width of the open end of the locking groove 25 is greater than the width of the bottom of the locking groove 25, and the width of the locking protrusion 27 gradually decreases from the root to the top.

[0078] When the arcuate side surface of the locking protrusion 27 is pressed against the arcuate side wall of the locking groove 25, torque can be transmitted between the first engaging portion 21 and the second engaging portion 23; when the torque between the first engaging portion 21 and the second engaging portion 23 is greater than the above-mentioned opening force, the arcuate side surface of the locking protrusion 27 and the arcuate side wall of the locking groove 25 slide relative to each other, and when the locking protrusion 27 is pressed against the end surface of the first engaging portion 21 or the second engaging portion 23, the first engaging portion 21 is disengaged from the second engaging portion 23, and the locking protrusion 27 slides along the end surface of the first engaging portion 21 or the second engaging portion 23 to the other locking groove 25, thereby realizing the rotation of the display terminal 200.

[0079] Due to the provision of the arc-shaped locking groove 25 and the arc-shaped locking protrusion 27, the first engaging portion 21 and the second engaging portion 23 can be disengaged by relative sliding of the arc-shaped surfaces when subjected to a large torque, and are not prone to getting stuck. After the locking groove 25 and the locking protrusion 27 are disengaged, the arc-shaped locking protrusion 27 slides along the end surface of the second engaging portion 23, and the friction between the first engaging portion 21 and the second engaging portion 23 is small, so that it is easy to slide quickly to the next engaging position, and is not prone to getting stuck.

[0080] like Figure 4-Figure 6As shown, when observed along the axial direction of the clutch unit, the locking groove 25 and the locking protrusion 27 are both fan-shaped and concentric with the first engaging portion 21 or the second engaging portion 23, and both the locking groove 25 and the locking protrusion 27 have fan-shaped cross-sections that are concentric with the first engaging portion 21 or the second engaging portion 23. In other words, the width of the locking groove 25 gradually increases from the inside to the outside in the radial direction, and the width of the locking protrusion 27 gradually increases from the inside to the outside in the radial direction. It can be understood that when the first engaging portion 21 and the second engaging portion 23 transmit torque, the outer end is subjected to a large torque. By setting the above structure, the force area of ​​the outer end can be increased, the pressure on the outer end can be reduced, the strength of the outer end can be enhanced, and fracture can be prevented.

[0081] like Figure 4-Figure 6 As shown, the width of at least a portion of the locking protrusion 27 is greater than the width of the open end of the locking groove 25, and at least one side of the locking protrusion 27 is pressed against the corresponding side of the locking groove 25 so that the locking protrusion 27 is engaged with the locking groove 25. This ensures that each locking protrusion 27 is engaged with the corresponding locking groove 25, and when there is a certain error between the actual rotation angle of the display terminal 200 and the design angle, each locking protrusion 27 is engaged with the corresponding locking groove 25, preventing the occurrence of a situation where part of the locking protrusion 27 is not engaged with the corresponding locking groove 25.

[0082] Preferably, the width of the locking groove 25 gradually decreases from the open end to the bottom, and the width of the locking protrusion 27 gradually decreases from the root to the top, and the width of the locking groove 25 at the open end is smaller than the width of the root of the locking protrusion 27. In other words, the central angle of the fan ring at the open end of the locking groove 25 is smaller than the central angle of the fan ring at the root of the locking protrusion 27, and when the first engaging portion 21 and the second engaging portion 23 are engaged, the engagement position of the locking protrusion 27 and the locking groove 25 is related to the circumferential alignment position of the locking protrusion 27 and the locking groove 25.

[0083] It can be understood that, under ideal circumstances (without considering the processing errors of the locking protrusion 27 and the locking groove 25), the equal heights on both sides of each locking boss are respectively pressed against the two side edges of the open end of the locking groove 25; due to processing errors, such as the angle between two adjacent locking bosses is not equal to 90°, the width of each locking boss is different, and some locking bosses and the corresponding locking grooves 25 may be pressed on one side, and at least one side of the locking protrusion 27 is pressed against the corresponding side of the locking groove 25 to enable the locking protrusion 27 to engage with the locking groove 25.

[0084] That is to say, by providing the locking protrusions 27 and locking grooves 25 of the above-mentioned structural form, it can be ensured that each locking protrusion 27 is engaged with the corresponding locking groove 25, and when there is a certain error between the actual rotation angle of the display terminal 200 and the design angle, each locking protrusion 27 remains engaged with the corresponding locking groove 25 to prevent the occurrence of partial locking protrusions 27 and the corresponding locking groove 25 being virtual engaged. On the other hand, a part of the locking protrusion 27 is engaged with the locking groove 25, which facilitates the locking protrusion 27 to slide out of the locking groove 25 during manual operation.

[0085] The depth of the locking groove 25 is smaller than the height of the locking protrusion 27 , so that the strength of the second engaging portion 23 is greater.

[0086] In another embodiment of the clutch unit, Figure 4 , Figure 5 and Figure 7 As shown, the first engaging portion 21 and the second engaging portion 23 may both be annular, and one end surface of the first engaging portion 21 and one end surface of the second engaging portion 23 are arranged opposite to each other. An end surface of one of the first engaging portion 21 and the second engaging portion 23 is provided with an oil groove 24, and the oil groove 24 is used to store lubricating oil to reduce friction.

[0087] One of the two end surfaces of the first engaging portion 21 and the second engaging portion 23 facing each other has a plurality of locking grooves 25, and the other has at least one locking protrusion 27. At least a portion of the locking protrusion 27 extends into the locking groove 25, and when the side surface of the locking protrusion 27 is pressed against the side wall of the locking groove 25, the locking protrusion 27 engages with the locking groove 25, thereby realizing the engagement of the first engaging portion 21 and the second engaging portion 23.

[0088] Each locking protrusion 27 is adapted to engage with at least two locking grooves 25 so that the second engaging portion 23 is adapted to engage with the first engaging portion 21 at least at two engaging positions. For example, for a certain locking protrusion 27, the locking protrusion 27 can engage with two locking grooves 25, and the angle between the two locking grooves 25 represents an angle of relative rotation of the first engaging portion 21 and the second engaging portion 23.

[0089] For example, the end surface of the first engaging portion 21 is provided with a locking groove 25, and the end surface of the second engaging portion 23 is provided with a locking protrusion 27, or the end surface of the second engaging portion 23 is provided with a locking groove 25, and the end surface of the first engaging portion 21 is provided with a locking protrusion 27. For the convenience of description, the following only takes the end surface of the first engaging portion 21 provided with a locking protrusion 27, and the end surface of the second engaging portion 23 provided with a locking groove 25 as an example for further description.

[0090] like Fig.18As shown, the locking grooves 25 include multiple groups, each group includes multiple locking grooves 25, and the locking grooves 25 of different groups are staggered along the circumferential direction. When the first engaging portion 21 and the second engaging portion 23 are engaged in one of the engaging positions, the multiple locking protrusions 27 correspond one-to-one to the multiple locking grooves 25 of one group. When the first engaging portion 21 and the second engaging portion 23 are rotated to the other engaging position, the multiple locking protrusions 27 correspond one-to-one to the multiple locking grooves 25 of the other group, wherein the angle between the axes of two corresponding locking grooves 25 in the two groups of locking grooves 25 is 90°.

[0091] The number of groups of locking grooves 25 can correspond to the number of positions of the display terminal 200 one by one. For example, when the display terminal 200 includes two positions of the horizontal and vertical screens, the locking grooves 25 are 2 groups. Taking the case where the locking grooves 25 include two groups as an example, each group includes three locking grooves 25 evenly spaced apart along the circumferential direction, and the two groups of locking grooves 25 are staggered along the circumferential direction. For example, each locking groove 25 of the first group is provided with a locking groove 25 of the second group on both sides, and the angle between the locking groove 25 of the first group and one of the two locking grooves 25 of the second group is 90°, and the angle between the locking groove 25 of the first group and the other of the two locking grooves 25 of the second group is 30°. The locking protrusions 27 include three, and the three locking protrusions 27 are evenly spaced apart along the circumferential direction. When the three locking protrusions 27 cooperate with the locking grooves 25 of different groups, the rotation of the display terminal 200 can be realized.

[0092] like Figure 4 , Figure 5 and Figure 7 As shown, the locking groove 25 and the locking protrusion 27 both have an arc-shaped cross-section, and the root width of the locking protrusion 27 is greater than the width of the top of the locking protrusion 27, the width of the open end of the locking groove 25 is greater than the width of the bottom of the locking groove 25, and the width of the locking protrusion 27 gradually decreases from the root to the top.

[0093] The locking groove 25 and the locking protrusion 27 are matched with each other in the circumferential direction, that is, the circumferential width of the locking groove 25 is greater than the circumferential width of the locking protrusion 27, the depth of the locking groove 25 is greater than the height of the locking protrusion 27, the width of the open end of the locking groove 25 is greater than the width of the root of the locking protrusion 27, and one side of the locking protrusion 27 presses against one side of the locking groove 25 so that the locking protrusion 27 and the locking groove 25 are engaged. In this way, the same side of the multiple locking protrusions 27 in the circumferential direction presses against one side wall of the corresponding locking groove 25 to realize the engagement of the first engaging portion 21 with the second engaging portion 23.

[0094] When the arcuate side surface of the locking protrusion 27 is pressed against the arcuate side wall of the locking groove 25, torque can be transmitted between the first engaging portion 21 and the second engaging portion 23; when the torque between the first engaging portion 21 and the second engaging portion 23 is greater than the above-mentioned opening force, the arcuate side surface of the locking protrusion 27 and the arcuate side wall of the locking groove 25 slide relative to each other, and when the locking protrusion 27 is pressed against the end surface of the first engaging portion 21 or the second engaging portion 23, the first engaging portion 21 is disengaged from the second engaging portion 23, and the locking protrusion 27 slides along the end surface of the first engaging portion 21 or the second engaging portion 23 to the other locking groove 25, thereby realizing the rotation of the display terminal 200.

[0095] Due to the provision of the arc-shaped locking groove 25 and the arc-shaped locking protrusion 27, the first engaging part 21 and the second engaging part 23 can be disengaged through the relative sliding of the arc-shaped surfaces when subjected to a large torque, and after the locking groove 25 and the locking protrusion 27 are disengaged, the friction between the first engaging part 21 and the second engaging part 23 is small, which facilitates rapid sliding to the next engaging position and is not easy to get stuck.

[0096] like Figure 4 , Figure 5 and Figure 7 As shown, when observed along the axial direction of the clutch unit, the locking groove 25 and the locking protrusion 27 are both fan-shaped and concentric with the first engaging portion 21 or the second engaging portion 23, and both the locking groove 25 and the locking protrusion 27 have fan-shaped cross-sections that are concentric with the first engaging portion 21 or the second engaging portion 23. In other words, the width of the locking groove 25 gradually increases from the inside to the outside in the radial direction, and the width of the locking protrusion 27 gradually increases from the inside to the outside in the radial direction. It can be understood that when the first engaging portion 21 and the second engaging portion 23 transmit torque, the outer end is subjected to a large torque, and the above structure can be provided to enhance the strength of the outer end and prevent breakage.

[0097] In order to ensure that the display terminal 200 is rotated to a target angle when it is manually rotated, for example, the target angle may be 90°, and the display terminal 200 switches between the horizontal and vertical screens, a paired positioning mechanism is provided between the parts fixedly connected to the vehicle body and the rotating parts, for example, a paired positioning mechanism is provided on the housing of the driving unit 30 and the rotating disk 13, so that the display terminal 200 is rotated to a target angle. Two forms of positioning mechanisms are introduced below.

[0098] In one embodiment, the positioning mechanism includes a limit stop 38 and a positioning pin (not shown in the figure). Fig.12As shown, the housing of the drive unit 30 is provided with two limit stops 38, and the two limit stops 38 are spaced apart along the circumference of the housing of the drive unit 30. The angle between the two limit stops 38 is the target angle of rotation, such as 90°. The rotating disk 13 is provided with a positioning pin, which extends toward the housing of the drive unit 30. The positioning pin is suitable for pressing the limit stops 38. In the initial position, the positioning pin presses against one limit stop 38. When the display terminal 200 is rotated, the rotating disk 13 rotates together with the positioning pin until the positioning pin presses against the other limit stop 38, indicating that the display terminal 200 is rotated into place, and the locking groove 25 and the locking protrusion 27 of the first engaging portion 21 and the second engaging portion 23 cooperate to ensure that the first engaging portion 21 and the second engaging portion 23 are always engaged.

[0099] In another embodiment, the positioning mechanism includes a limiting groove 14 and a positioning pin (not shown in the figure), such as Figure 8 As shown, the rotating disk 13 is provided with an arc-shaped limiting groove 14, and the housing of the driving unit 30 is installed with a positioning pin, which extends toward the limiting groove 14. The positioning pin can slide in the limiting groove 14, and the arc of the limiting groove 14 is equal to the target rotation angle of the display terminal 200. The positioning pin is suitable for pressing the end of the limiting groove 14. When the positioning pin rotates from one end of the limiting groove 14 to the other end, it means that the display terminal 200 is rotated into place, and the locking groove 25 and the locking protrusion 27 of the first engaging portion 21 and the second engaging portion 23 can be matched to ensure that the first engaging portion 21 and the second engaging portion 23 are always engaged.

[0100] In some optional embodiments, such as Figure 1 and Figure 3 As shown, the actuator 100 also includes: an elastic member 40, which is elastically pressed between the mounting unit and the driving unit 30 along the axial direction of the clutch unit, so that the driving unit 30, the clutch unit, and the mounting unit are pressed in sequence, and the elastic preload force of the elastic member 40 (i.e., the aforementioned axial preload force) is used to engage the second engaging portion 23 with the first engaging portion 21, and the elastic member 40 can be a spring.

[0101] In the manual mode, a torque is applied to the first engaging portion 21, such as manually rotating the display terminal 200, and a torque is generated between the first engaging portion 21 and the second engaging portion 23. When the torque is greater than the above-mentioned opening force, the locking protrusion 27 gradually disengages from the locking groove 25. After the locking protrusion 27 disengages from the locking groove 25, the second engaging portion 23 and the drive unit 30 are axially immobile relative to the entire vehicle, the elastic member 40 is compressed, the first engaging portion 21 moves axially in a direction away from the second engaging portion 23, and the display terminal 200 also moves axially in a direction away from the second engaging portion 23, that is, the display terminal 200 moves backward (towards the rear of the entire vehicle).

[0102] like Fig.10As shown, the elastic member 40 can be sleeved outside the mounting shaft 15, and an axial limiter 42 is fixed on the mounting shaft 15. The axial limiter 42 can be a snap ring. One end of the elastic member 40 presses against the axial limiter 42, and the other end of the elastic member 40 presses against the drive unit 30. The axial fixed connection between the axial limiter 42, the mounting shaft 15, and the rotating disk 13 limits the axial length of the system. In this way, a certain positive pressure (the pressure is provided by the compression deformation of the elastic member 40) can be maintained between the components connected in series to achieve the locking function of the system. Here, the axial limit between the components is also achieved.

[0103] Preferably, if Fig.10 As shown, the other end of the elastic member 40 is pressed against the housing of the drive unit 30 through the elastic member end face bearing 41, and the elastic member end face bearing 41 can be a thrust bearing. Therefore, when the display terminal 200 rotates, the housing of the drive unit 30 does not move, and the mounting shaft 15 rotates. By setting the elastic member end face bearing 41, the friction between the elastic member 40 and the housing of the drive unit 30 can be significantly reduced. The housing of the drive unit 30 has an axial limit portion 37g, and an annular mounting groove is formed at the axial limit portion 37g. The elastic member end face bearing 41 is installed in the mounting groove and presses against one side of the axial limit portion 37g (the bottom wall of the mounting groove). A part of the elastic member 40 is also located in the mounting groove. In this way, the axial length of the entire actuator 100 is short. At the same time, the first groove 13a, the second groove 13b of the rotating disk and the cavity 11a structure of the mounting bracket 11 are combined with it, so that the arrangement of the entire mechanism is more compact and reasonable and the connection is tighter.

[0104] In addition to the present solution, the method of obtaining positive pressure can also be achieved by limiting the axial limit portion 37g at one end and tightening the other end by riveting, using a shaft clamp or a nut.

[0105] The structure of the driving unit 30 of the actuator 100 according to the embodiment of the present invention is described below.

[0106] like Fig.12 and Fig.13 As shown, the driving unit 30 includes: a power source 31 and a reducer, the output shaft of the power source 31 is connected to the input end of the reducer, the output end of the reducer is connected to the installation unit, or the output end of the reducer is connected to the second joint 23, and the installation unit is driven through the second joint 23 and the first joint 21.

[0107] The power source 31 can be a motor, an oil pump, an air pump, etc., and the reducer can be a gear reducer, a belt drive reducer, or a worm gear transmission mechanism, etc. The reducer can be a single-stage reduction mechanism or a multi-stage reduction mechanism.

[0108] like Figure 12-Figure 17As shown, the driving unit 30 for driving the display terminal to move includes: a power source 31 and a reducer, the reducer includes a driving worm and a driven spur gear, the driving worm is connected to the output shaft of the power source 31, and the driven spur gear is meshed with the driving worm.

[0109] It adopts a worm spur gear reduction mechanism, which is compact, small, light, and has smooth transmission and low noise. The layout of the entire reduction mechanism is flexible and easy to route. It is more suitable for the requirements of compact vehicle structure space and vehicle weight limit, and can also provide users with a better driving experience.

[0110] like Fig.16 and Fig.17 As shown, the output shaft of the power source 31 and the driving worm gear of the reducer can be detachably connected via a connector, the driving worm gear can be pivotally mounted on the housing of the drive unit 30, and the driving worm gear is positioned and matched with the housing of the drive unit 30 in its own axial direction. In other words, the driving worm gear cannot move relative to the housing of the drive unit 30 in the axial direction (without considering the assembly clearance).

[0111] It can be understood that the power source 31 outputs the rotational speed to the active worm gear through this connector. When the power source 31 is damaged, it is only necessary to remove the power source 31 through the connector. Since the active worm gear is axially positioned at the housing of the drive unit 30, when the power source 31 is removed, the meshing of the active worm gear and the gear in the reducer is not affected. The power source 31 and the reducer can be installed and fixed separately, which can weaken the influence of the vibration of the power source 31 on the components in the reducer and prevent the active worm gear from swinging.

[0112] According to the driving unit 30 for driving the movement of the vehicle-mounted display terminal according to the embodiment of the present invention, by providing a connector, the meshing stability of the components in the reducer can be improved, the life of the driving unit 30 can be increased, and the power source 31 can be repaired separately without affecting the meshing of the worm gear.

[0113] like Fig.17 As shown, the connector includes: a first sub-connector 39a and a second sub-connector 39b, the first sub-connector 39a is fixedly connected to the output shaft of the power source 31, the second sub-connector 39b is fixedly connected to the active worm, and the second sub-connector 39b is detachably connected to the first sub-connector 39a.

[0114] During assembly, the first sub-connector 39a and the second sub-connector 39b are axially close to each other to achieve assembly, and after assembly, the first sub-connector 39a and the second sub-connector 39b are circumferentially fixed to transmit torque; during disassembly, the first sub-connector 39a and the second sub-connector 39b are axially separated from each other to achieve disassembly, so that the active worm is not affected during disassembly. Optionally, the first sub-connector 39a and the second sub-connector 39b are engaged by inserting teeth, for example, the first sub-connector 39a is provided with a plurality of insert teeth, and the second sub-connector 39b is provided with a plurality of slots, and the insert teeth correspond to the slots one by one. During disassembly, it is only necessary to disassemble the first sub-connector 39a and the second sub-connector 39b to disengage the insert teeth from the slots.

[0115] The housing of the driving unit 30 is provided with an axial limit support structure, the active worm is supported on the axial limit support structure, and the shaft shoulder of the active worm is arranged opposite to the end face of the axial limit support structure to achieve axial positioning.

[0116] like Fig.16 and Fig.17 As shown, the housing of the driving unit 30 includes: a housing body 37a, a housing front cover 37f, and a housing rear cover 37c.

[0117] The shell body 37a defines a first cavity 37k and a second cavity 37m, and the first cavity 37k and the second cavity 37m are separated by a partition 37h. The power source 31 is installed in the first cavity 37k, and the active worm is installed in the second cavity 37m. The partition 37h is provided with an avoidance hole 37j, and the active worm extends into the first cavity 37k from the avoidance hole 37j and is detachably connected to the output shaft of the power source 31. The partition 37h may be provided with an axial limiting support structure at the avoidance hole 37j. The partition 37h is used to distinguish the two installation cavities, and can realize axial limiting of the active worm to prevent the active worm from shaking when the power source 31 is disassembled. The first cavity 37k is open at one end away from the second cavity 37m, the casing rear cover 37c is connected to the casing body 37a to close the open end of the first cavity 37k, the casing front cover 37f is connected to the casing body 37a to close the open end of the second cavity 37m, the connector is installed in the first cavity 37k, the casing front cover 37f is provided with a shaft sleeve 37n, the driving worm is supported in the shaft sleeve 37n, and the shaft shoulder of the driving worm is arranged opposite to the end face of the shaft sleeve 37n.

[0118] When the power source 31 needs to be repaired, the rear cover 37c of the casing is disassembled, and the power source 31 and the first sub-connector 39a are separated from the second sub-connector 39b as a whole. During the disassembly process, the meshing of the active worm and the driven spur gear is not affected, which can prevent tooth jamming during subsequent use.

[0119] The included angle between the axis of the active worm and the axis of the driven spur gear is an acute angle. The included angle between the axis of the active worm and the axis 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 active worm.

[0120] That is to say, the active worm and the driven spur gear are not arranged vertically, which can ensure that the active worm and the driven spur gear are in good meshing state and have higher transmission efficiency. Spur gears are easy to process, and the worm gear transmission in the related art is improved to worm gear spur gear transmission, thereby avoiding the problem of poor worm gear processing performance.

[0121] In some embodiments, the reducer is a primary transmission mechanism, and the reducer includes: a primary driving worm and a primary driven spur gear, the primary driving worm is connected to the output shaft of the power source 31, the output shaft of the power source 31 and the primary driving worm can be fixedly connected, or the output shaft of the power source 31 and the primary driving worm are detachably connected through a connector. The primary driving worm meshes with the primary driven spur gear, and the angle between the axis of the primary driving worm and the axis of the primary driven spur gear is an acute angle. Fig.14 As shown, the axis L1 of the primary active worm and the axis L2 of the primary driven spur gear are projected onto a projection plane parallel to the two axes, and the angle between the axis of the primary active worm and the axis of the primary driven spur gear 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 primary active worm. In other words, the primary active worm and the primary driven spur gear are not arranged vertically, which can ensure that the meshing state between the primary active worm and the primary driven spur gear is good and the transmission efficiency is higher. The spur gear is easy to process, and the worm gear transmission in the related art is improved to the worm gear spur gear transmission, thereby avoiding the problem of poor worm gear processing performance.

[0122] In other embodiments, Fig.12 and Fig.13 As shown, the reducer is a two-stage transmission mechanism, and the reducer includes: a primary driving worm 32 , a primary driven spur gear 33 , a secondary driving worm 34 , and a secondary driven spur gear 35 .

[0123] Among them, the output shaft of the power source 31 is connected to the first-stage active worm gear 32, the first-stage active worm gear 32 can be integrated outside the output shaft of the power source 31, the output shaft of the power source 31 and the first-stage active worm gear can be fixedly connected, or the output shaft of the power source 31 and the first-stage active worm gear are detachably connected through a connector.

[0124] The primary driving worm 32 is meshed with the primary driven spur gear 33, and the included angle between the axis of the primary driving worm 32 and the axis of the primary driven spur gear 33 is an acute angle, such as Fig.14 As shown, the axis L1 of the primary active worm and the axis L2 of the primary driven spur gear are projected onto a projection plane parallel to the two axes, and the angle α between the axis of the primary active worm 32 and the axis of the primary driven spur gear 33 is obtained, 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 primary active worm 32. In other words, the primary active worm 32 and the primary driven spur gear 33 are not arranged vertically, so that the meshing state of the primary active worm 32 and the primary driven spur gear 33 can be ensured to be good, and the transmission efficiency is higher. The spur gear is easy to process, and the worm gear transmission in the related art is improved to the worm gear spur gear transmission, thereby avoiding the problem of poor worm gear processing performance.

[0125] The secondary driving worm 34 is coaxially arranged with the primary driven spur gear 33, and the secondary driving worm 34 and the primary driven spur gear 33 are axially spaced apart from each other. The secondary driving worm 34 and the primary driven spur gear 33 can be processed as one piece, or the primary driven spur gear 33 can be connected to the secondary driving worm 34 through a spline.

[0126] The secondary driven spur gear 35 meshes with the secondary active worm 34, and the secondary driven spur gear 35 is used to output the driving force of the driving unit 30. The included angle between the axis of the secondary active worm 34 and the axis of the secondary driven spur gear 35 is an acute angle, such as Fig.15 As shown, the axis L3 of the secondary active worm 34 and the axis L4 of the secondary driven spur gear 35 are projected onto a projection plane parallel to the two axes, and the angle β between the axis of the secondary active worm 34 and the axis of the secondary driven spur gear 35 is obtained, which satisfies: 82°≤β≤88°, further, 84°≤β≤86°, for example, β=85°, and the size of β is determined according to the helix angle of the secondary active worm 34. In other words, the secondary active worm 34 and the secondary driven spur gear 35 are not arranged vertically, so that the meshing state of the secondary active worm 34 and the secondary driven spur gear 35 can be ensured to be good, and the transmission efficiency is higher. The spur gear is easy to process, and the worm gear transmission in the related art is improved to the worm gear spur gear transmission, thereby avoiding the problem of poor worm gear processing performance.

[0127] The axis of the primary active worm 32, the axis of the secondary driven spur gear 35, and the axis of the clutch unit are parallel. The axis of the output shaft of the power source 31 is parallel to and spaced from the axis of the secondary driven spur gear 35. Thus, the arrangement direction of the power source 31 can be parallel to the output direction of the drive unit 30, which is convenient for assembly design.

[0128] When the power source 31 is not working, the self-locking function of the worm gear (the self-locking can be triggered when the helix angle of the worm gear is smaller than the friction angle) can be used to realize the clutch function of the overall solution. That is, during manual operation, the reducer self-locks, so that the second coupling part 23 is fixed, thereby allowing the first coupling part 21 to rotate relatively.

[0129] It adopts a worm spur gear reduction mechanism, which is compact, small, light, and has smooth transmission and low noise. The layout of the entire reduction mechanism is flexible and easy to route. It is more suitable for the requirements of compact vehicle structure space and vehicle weight limit, and can also provide users with a better driving experience.

[0130] The primary driven spur gear 33 transmits the high-speed rotation of the primary driving worm 32 to the secondary driving worm 34. In order to reduce the vibration during the transmission process, the primary driven spur gear 33 can be a plastic part, and the primary driving worm 32, the secondary driving worm 34 and the secondary driven spur gear 35 are metal parts.

[0131] The secondary driven spur gear 35 is connected to the second joint part 23 to achieve power output. For example, the secondary driven spur gear 35 and the second joint part 23 are formed as a whole. According to the functional requirements of the secondary driven spur gear 35 and the second joint part 23, the two can be made of different materials. The secondary driven spur gear 35 is made of wear-resistant material, and the second joint part 23 is made of self-lubricating material, such as polyformaldehyde, molybdenum disulfide, boron nitride, etc.

[0132] like Fig.12 and Fig.13 As shown, the driving unit 30 may further include: an output interface, the output interface is connected to the secondary driven spur gear 35, the output interface is used to output the driving force, and the output interface may be the second engaging portion 23 of the clutch unit.

[0133] The output interface and the secondary driven spur gear 35 are both hollow ring-shaped.

[0134] The first engaging part 21, the second engaging part 23 and the secondary driven spur gear 35 are hollow in shape to facilitate wiring and reduce weight. Furthermore, the torque input end and the output end are not on the same axis. The hollow shaft plus the transmission system can process the input and output shafts into parallel axis directions, which is beneficial to the spatial planning of the structure and provides a larger design margin.

[0135] The primary active worm 32 is fixedly connected to the motor shaft, with one end extending from the motor and the other end limited by the housing structure. The primary driven spur gear 33 and the secondary active worm 34 are fixed on the same shaft. Due to space limitations, no bearings are used at both ends but shouldered sleeves with lubrication inside. The secondary driven spur gear 35 is also limited by the housing structure, one end is integrated with the output structure, and the other end is supported by the end bearing. Both the sleeve and the end bearing reduce the friction loss during the rotation process and reduce frictional heat.

[0136] The secondary driven spur gear 35 may be a hollow gear, which can reduce the weight of the entire drive unit 30 on the one hand and facilitate assembly on the other hand.

[0137] like Figure 3 and Fig.12 , Fig.13 As shown, the housing of the driving unit 30 includes: a housing body 37a, a housing rear cover 37c, a housing upper cover 37d, and a housing front cover 37f.

[0138] The power source 31, the primary active worm 32, the primary driven spur gear, and the secondary active worm 34 are all installed on the shell body 37a, and the secondary driven spur gear 35 is installed on the shell cover 37d. The primary driven spur gear and the secondary active worm 34 are fixed on the same shaft. Due to space limitations, bearings are not used at both ends but shouldered sleeves with lubrication inside.

[0139] like Fig.12 As shown, the shell body 37a is a plastic part, and the shell cover 37d is a metal part. It can be understood that the shell body 37a mainly carries high-speed components, and the provision of plastic parts is conducive to shock absorption; the shell cover 37d mainly carries low-speed components and is processed in an integrated manner.

[0140] In some other optional embodiments, reference Fig.13 The shell body 37a and the shell cover 37d can be an integrated part.

[0141] The case back cover 37c is connected to the case body 37a to close the rear end of the case body 37a, the case top cover 37d is connected to the case body 37a, and the case front cover 37f is connected to the case body 37a to close the front end of the case body 37a. The case back cover 37c, the case top cover 37d, the case front cover 37f and the case body 37a can be connected by a clamping structure and a threaded fastener.

[0142] The drive unit 30 is in the whole system, and the housing is subjected to impact loads. The second joint portion 23 is subjected to axial positive pressure and circumferential torque when rotating, which will be transmitted to the housing. Therefore, in order to ensure the stability of the drive unit 30, in addition to the screws and snap connections between the components, the drive unit 30 is also fastened to the base 50 in the actuator 100 by screws to increase the strength of the drive unit 30 and improve its service life.

[0143] The housing of the driving unit 30 has an axial limiting portion, and the end face of the secondary driven spur gear 35 facing away from the display terminal 200 presses against the axial limiting portion, and the end face of the secondary driven spur gear 35 facing away from the second engaging portion 23 presses against the axial limiting portion. Specifically, the housing cover 37d may have an axial limiting portion 37g for limiting the end face of the secondary driven spur gear 35, so that one end face of the secondary driven spur gear 35 is connected to the second engaging portion 23, and the other end face of the secondary driven spur gear 35 presses against the housing cover 37d, thereby ensuring the axial positioning of the secondary driven spur gear 35 and preventing the secondary driven spur gear 35 from hitting the secondary active worm 34.

[0144] The secondary driven spur gear 35 is pressed against the axial limit portion 37g through the gear end bearing 36. The gear end bearing 36 can be a thrust bearing, which can reduce the friction between the secondary driven spur gear 35 and the housing of the drive unit 30 and reduce torque loss. In another structure, an annular groove can be provided on the housing cover 37d for assembling the gear end bearing 36.

[0145] The end face of the secondary driven spur gear 35 facing away from the second engaging portion 23 may be provided with an annular groove, the gear end face bearing 36 is provided in the annular groove, and the gear end face bearing 36 presses against the bottom wall of the annular groove, and at least a part of the axial limiting portion 37g extends into the annular groove. Further, the axial limiting portion 37g may be provided with a deep groove shape, one end face of the axial limiting portion 37g presses against the elastic member end face bearing 41, and the other end face of the axial limiting portion 37g presses against the gear end face bearing 36, and the gear end face bearing 36 is also in the annular groove of the secondary driven spur gear 35, and at least a part of the elastic member 40 may be located in the annular groove of the secondary driven spur gear 35. In this way, the axial length of the entire mechanism can be shortened, space can be saved, and the applicability of the entire mechanism is more extensive. Moreover, from the perspective of structural mechanics, the rigidity of the system is also improved, so that its bending and torsion resistance is enhanced.

[0146] like Figure 3 and Fig.12 As shown, the casing upper cover 37d has a sleeve 37e, the secondary driven spur gear 35 is sleeved outside the sleeve 37e, and the axial limiting portion 37g is located on the outer circumferential surface of the sleeve 37e.

[0147] like Figure 1 , Figure 3 , Fig.19 As shown, the housing of the drive unit 30 has a radial retaining mechanism, and the second engaging portion 23 is relatively rotatably disposed on the radial retaining mechanism to limit the radial position. The radial retaining mechanism is used to limit the radial offset of at least part of the rotating component to prevent the actuator 100 from being radially offset during operation, so that the actuator 100 can still maintain stable operation after long-term operation.

[0148] In some optional embodiments, the shell of the drive unit 30 is installed on the vehicle body and remains stationary. The shell of the drive unit 30 has an outer ring and an inner ring that are arranged in an empty sleeve. The radial retaining mechanism includes an outer ring and an inner ring. The outer ring is sleeved on the inner and outer rings. The outer ring and the inner ring define an annular cavity. At least a portion of the second joining portion 23 is arranged in the annular cavity. At least a portion of the second joining portion 23 is sleeved outside the inner ring. The inner ring is used to prevent the second joining portion 23 from being biased radially inward. The outer ring is sleeved on at least a portion of the second joining portion 23. The outer ring is used to prevent the second joining portion 23 from being biased radially outward.

[0149] In some optional embodiments, such as Fig.19 As shown, the housing of the drive unit 30 includes: a housing body 37a, a housing upper cover 37d and a housing front cover 37f, the housing upper cover 37d is connected to the housing body 37a, and the housing upper cover 37d has an annular sleeve 37e, the housing front cover 37f is connected to the front end of the housing body 37a, and the housing front cover 37f has an annular limiting ring 37p, the limiting ring 37p is sleeved outside the sleeve 37e to define an annular cavity, and at least part of the second engaging portion 23 is arranged in the annular cavity. At least part of the second engaging portion 23 is sleeved outside the sleeve 37e, and the sleeve 37e is used to prevent the second engaging portion 23 from being deflected radially inward, and the limiting ring 37p is sleeved outside at least part of the second engaging portion 23, and the limiting ring 37p is used to prevent the second engaging portion 23 from being deflected radially outward.

[0150] The output part of the drive unit 30 includes a ring-shaped output gear, which can be the secondary driven spur gear 35 described in the above embodiment. The output gear is connected to the second engaging part 23, and the output gear is sleeved outside the sleeve 37e. The second engaging part 23 includes an engaging disc 25 for locking with the first engaging part 21 and a connecting sleeve 26 connected to the end of the engaging disc 25 away from the first engaging part 21. The connecting sleeve 26 is connected to the output gear, and the limiting ring 37p is sleeved outside the connecting sleeve 26. In this way, the radial inner and outer sides of the output gear are also limited by the sleeve 37e and the limiting ring 37p respectively. During the working process, the output end of the drive unit 30 is not easily affected by external vibrations to prevent tooth jamming.

[0151] The radial retaining mechanism may further include a radial limit bearing (not shown in the figure), and a radial limit bearing is provided between the limit ring 37p and at least part of the second joint portion 23. For example, a radial limit bearing may be provided between the limit ring 37p and the connecting sleeve 26. In this way, the inner ring of the radial limit bearing presses against the connecting sleeve 26, and the outer ring of the radial limit bearing presses against the limit ring 37p, so that the radial limitation of the radial retaining mechanism is more stable.

[0152] The mounting unit includes: a mounting shaft 15 , the mounting shaft 15 passes through the clutch unit and the driving unit 30 , and a sleeve 37e is sleeved outside the mounting shaft 15 . The sleeve 37e can limit the mounting shaft 15 radially outward, thereby further enhancing the radial stability of the rotating disk 13 .

[0153] The drive unit 30 in this patent can adopt a planetary gear system or a two-stage worm gear or spur gear transmission system, so that the system has the following advantages: 1) compact structure, small size and light weight; 2) stable transmission, low noise, high transmission ratio and obvious deceleration effect; 3) flexible layout and convenient wiring. It is more suitable for the requirements of compact space and weight limit of the whole vehicle structure, and can also provide users with a better driving experience; 4) The unique in-place locking system in this patent can effectively isolate the transmission system inside the drive unit 30 from external impacts, which can not only avoid the micro-vibration and rotation of the display terminal 200 caused by the internal tooth gap of the transmission system, but also improve the system stability and anti-shake and anti-vibration capabilities, and also avoid the damage of the transmission system to the external impact, and improve the system reliability and life; 5) The present invention is mainly used for the rotation mechanism of the display terminal 200; it is also applicable to other electronic products with rotation requirements; 6) As mentioned above, each component is connected by the mounting shaft 15 in the axial direction. A series of components will produce error superposition (production error, assembly error), which can be easily prevented by spring compression. To minimize the pin gap, the error can be reduced; other improvement measures are to shorten the axial matching size, find the appropriate position from the movement structure, design grooves to retract the spring and other components into the movement, shorten the axial length of the entire mechanism, and reduce the size chain error; 7) As the axial length decreases, the rigidity of the entire system is also increased. Then, when the system is loaded by external force, it has better bending and torsion resistance and is not easy to deform or damage; 8) On the other hand, in addition to increasing the rigidity, the shortened axial length also improves the overall stability and improves the shaking amount; 9) This scheme focuses on the modular design of the automatic manual integrated rotating mechanism. Except for the mounting bracket 11 and the base 50 that match the external structure, the remaining components form a complete module, which can be applied to any model or even other products with rotation function requirements. It has the same interchangeability and versatility as standard parts, which greatly improves the scope of application of the product and can be used for actual production use.

[0154] It can be understood that the automatic rotation is locked by the over-voltage protection when the rotation is in place; the manual rotation is controlled by the locking groove 25 and the locking protrusion 27 of the clutch unit to perform a 90° rotation stroke.

[0155] Functional implementation principle:

[0156] 1) The transmission route of the actuator 100 in the automatic mode: starting from the drive unit 30, the output torque of the motor is decelerated and increased. This solution is implemented by a reducer, and is transmitted to the first coupling part 21 through the second coupling part 23 at its own output end. The first coupling part 21 transmits the torque to the rotating disk 13 through multiple circumferential locking grooves 25 (through the boss structure corresponding to the rotating disk 13), driving the rotating disk 13 to achieve planar rotation, thereby driving the mounting bracket 11 and the display terminal 200 fixed thereon to perform planar rotation. When rotating 90°, the limiting groove 14 on the rotating disk 13 reaches the end and is limited by the positioning pin on the drive unit 30. The motor is blocked and the current increases. The control system detects a blocking signal and the built-in gyroscope of the display terminal 200 transmits an in-position signal. The control system recognizes that it is in position and cuts off the power to the motor. The power system transmission is interrupted and the system is locked in position.

[0157] 2) Transmission route of the rotation system in manual mode: In automatic mode, the second joint part 23 and the first joint part 21 are relatively stationary and rotate together, but in manual mode, the second joint part 23 is locked and fixed because the worm gear spur gear inside the movement has a self-locking function. Therefore, only the first joint part 21 rotates with the rotating disk 13, the mounting bracket 11 and the display terminal 200 as a whole. The torque transmission route starts from the manual rotation of the display terminal 200, through the mounting bracket 11 to the rotating disk 13 and then to the first joint part 21. At this time, the locking function in manual mode is realized through the special structure of the first joint part 21 and the second joint part 23.

[0158] 3) Locking and protection system in place: The locking function in place of this rotating mechanism system in automatic mode is ensured by the positive pressure provided by the compression deformation of the elastic member 40; the sufficiently large system positive pressure between the contact surfaces of each component can effectively isolate the impact of the road surface transmitted from the base 50 to the system from the impact on the display terminal 200, thereby effectively protecting the transmission system and further improving the reliability of the system.

[0159] One end of the automatic mode rotating disk 13 uses an axial limiter 42 to form a retaining wall to compress the elastic member 40, and the other end is a disk body, which acts similarly to a shoulder, and together realizes the locking effect of multiple axial components. This design can effectively prevent the display terminal 200 from trembling and rotating due to the existence of tooth gaps in the drive unit 30, avoiding the visual lingering phenomenon caused by it, and at the same time prevents the risk of transmission system damage caused by micro-trembling and tooth hitting during vibration impact, thereby ensuring the system's anti-shake and anti-vibration performance.

[0160] In manual mode, the clutch unit, the rotating disk 13 and the positioning mechanism on the driving unit realize effective locking of the 90° rotation stroke and avoidance of empty positions. The second joint part 23 is provided with 6 locking grooves 25, 3 in a group, and the angle between the two groups is slightly greater than 90°, and the first joint part 21 is provided with 3 locking protrusions 27, which can be respectively adapted to the two groups of locking grooves 25 of the second joint part 23 at the two end points of the rotation stroke. The cross-sections of the locking grooves 25 and the locking protrusions 27 are arc-shaped, which can achieve clear positioning and take into account a good hand feel. The locking groove 25 is slightly larger than the locking protrusion 27 to reserve an appropriate pre-pressure angle, which can avoid the phenomenon of not being able to be stuck in place due to manufacturing tolerances, reduce the requirements for the clutch unit and position accuracy, and avoid the shaking and instability of components caused by the gap caused by production errors. An oil groove 24 is provided on the end surface of the second joint part 23, which greatly improves the friction state when the first joint part 21 and the second joint part 23 rotate relative to each other, increases the life of the components, and also improves the feel of the user during manual rotation to a certain extent.

[0161] As described above, the key components of the manual mode are the first joint part 21 and the second joint part 23, and the automatic mode is that the two components are temporarily fastened together, and the automatic rotation is realized by the automatic power output by the drive unit 30. The outstanding feature of this solution is that it has two working modes, manual and automatic, which are distinguished by a reasonably designed torque threshold. In terms of structure, the second joint part 23, the key component of the manual mode, is made into the output end of the drive unit 30 to realize the coexistence of the two modes.

[0162] 4) To improve the driving experience of customers, the display terminal 200 of this system rotates at an extremely slow speed (about 6-10r / min), which requires the drive unit 30 to have a large transmission ratio, about 1500-2000. A planetary gear reducer or a double worm reduction system with two-stage worm spur gears can be selected according to the specific structural layout. The overall shaft is designed as a hollow structure to facilitate the design of the locking system.

[0163] 5) This rotating system uses an embedded current limiting circuit board to cut off the power to the motor when a current exceeding the set threshold is detected, thereby achieving safe anti-pinch and overload protection for the system.

[0164] 6) In-place and abnormal position control: When the system is in place at 90° or the display terminal 200 encounters external resistance and the anti-pinch indication is activated, it is achieved by relying on the current rising. When it exceeds the design threshold of the current limiting circuit board of the drive unit 30, the system will power off the motor. After the motor is powered off, the control system will determine whether the display terminal 200 is in an abnormal position based on the signal transmitted by the built-in gyroscope of the display terminal 200. If the signal transmitted by the gyroscope indicates that the display terminal 200 is in a horizontal or vertical position, it means that the motor power is off when it is in place. Otherwise, the display terminal 200 is determined to be in an abnormal position. If the motor power is off when it is abnormal, a warning screen will appear to remind the customer to check for foreign objects. When the resistance disappears, it will restart and return to the original position according to the customer's choice. The abnormal position determination includes manual operation in the automatic operation state. The actual abnormal position feedback processing can be designed according to the customer's requirements to define the software function. The limit locking structure of this solution can fully adapt to different software function definitions (regarding the control of abnormal positions) at the physical level.

[0165] 7) The rotating disk 13 and the mounting shaft 15 are hollow in design to facilitate wiring, so that the wiring harness behind the screen is reasonable and beautiful. The wire outlet has a large rounded corner to prevent cutting.

[0166] 8) This system is a fixed-center rotation system, that is, the rotation center remains unchanged during the rotation process, so the matching and compatibility between terminals of different sizes can be achieved by using a mounting bracket 11 with a unified interface, thereby improving the versatility of the product, saving costs, and facilitating quality control.

[0167] 9) The system display terminal 200 is suspended on the central control, which can make the instrument panel more tidy and beautiful.

[0168] This patent relates to an actuator 100 of a display terminal 200 that can realize manual and automatic rotation of the display terminal 200. The actuator 100 can realize the following functions: 1) automatic switching of the display terminal 200 between the horizontal and vertical screen states; 2) providing manual and automatic rotation modes to enhance the user experience; 3) automatic positioning locking after rotation into position; 4) system anti-shake and anti-vibration; 5) system overload protection and safety anti-pinch; 6) multi-size terminal matching and compatibility, with strong adaptability.

[0169] It should be noted that the above-mentioned embodiments of the mounting unit, the clutch unit, and the driving unit 30 can be combined with each other to form more embodiments of the actuator 100 without conflicting circumstances.

[0170] The invention also discloses a vehicle.

[0171] The vehicle of the embodiment of the present invention includes: a display terminal 200, and an actuator 100 such as any one of the above-mentioned ones, the display terminal 200 is installed on the installation unit of the actuator 100, the actuator 100 is installed on the vehicle body, for example, the shell of the drive unit 30 can be installed on the vehicle body through the base 50, the rotation axis of the display terminal 200 can be the X direction (front and rear direction), and the display terminal 200 can be a vehicle-mounted display terminal, such as a display panel installed on the dashboard.

[0172] In this way, the display terminal 200 of the vehicle in the embodiment of the present invention can be used at multiple angles, for example, it can be switched between the horizontal and vertical screens manually or automatically.

[0173] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does 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.

[0174] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An actuator for adjusting a display terminal, characterized in that: include: An installation unit, the installation unit is used to install the display terminal; A clutch unit, wherein a first engaging portion of the clutch unit is connected to the mounting unit, and a second engaging portion of the clutch unit is often locked with the first engaging portion; a driving unit, wherein an output end of the driving unit is connected to the second joint portion; an elastic member, wherein the elastic member is elastically pressed between the mounting unit and the driving unit along the axial direction of the clutch unit, so that the driving unit, the clutch unit, and the mounting unit are pressed in sequence, and the elastic preload force of the elastic member is used to make the second engaging portion engage with the first engaging portion; The mounting unit includes a rotating disk, and the rotating disk is used to mount the display terminal.

2. The actuator for adjusting the display terminal according to claim 1, characterized in that: The clutch unit is located outside the housing of the driving unit.

3. The actuator for adjusting the display terminal according to claim 1, characterized in that: The clutch unit is at least partially located within the mounting unit.

4. The actuator for adjusting the display terminal according to claim 3, characterized in that: The mounting unit comprises a rotating disk for mounting the display terminal, the rotating disk is connected to the first joint portion, and one end of the rotating 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 the display terminal according to claim 4, characterized in that: The second engaging portion is at least partially located in the first groove.

6. The actuator for adjusting a display terminal according to claim 1, characterized in that: The rotating disk and the first engaging portion are integrally formed.

7. The actuator for adjusting 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 relatively rotatably disposed on the radial retaining mechanism to limit the position in the radial direction.

8. The actuator for adjusting the display terminal according to claim 7, characterized in that: The housing of the driving unit has an outer ring and an inner ring which are arranged in two empty sleeves. The radial retaining mechanism includes the outer ring and the inner ring. The outer ring and the inner ring define an annular cavity. At least a part of the second engaging portion is arranged in the annular cavity.

9. The actuator for adjusting a display terminal according to claim 7, characterized in that: The shell of the drive unit includes: a shell body, a shell upper cover and a shell front cover, the shell upper cover is connected to the shell body and has an annular sleeve, the shell front cover is connected to the front end of the shell body and has an annular limiting ring, the limiting ring is sleeved outside the sleeve to define an annular cavity, and at least part of the second joint portion is arranged in the annular cavity.

10. The actuator for adjusting a display terminal according to claim 9, 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 actuator for adjusting a display terminal according to claim 9, 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 sleeve.

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

13. The actuator for adjusting a display terminal according to claim 9, characterized in that: The installation unit comprises: an installation shaft, the installation shaft passes through the clutch unit and the driving unit, and the sleeve is sleeved outside the installation shaft.

14. The actuator for adjusting a display terminal according to claim 1, characterized in that: The first engaging portion is engaged with the second engaging portion and has a plurality of engaging positions, and the mounting unit is configured to be manually rotated to drive the first engaging portion to rotatably switch between the plurality of engaging positions relative to the second engaging portion.

15. The actuator for adjusting a display terminal according to claim 14, characterized in that: When the engagement position is changed, the second engagement portion and the drive unit remain relatively stationary in the axial direction, and the first engagement portion moves in the axial direction away from the second engagement portion.

16. The actuator for adjusting a display terminal according to claim 14, characterized in that: A plurality of the engaging positions are formed on end surfaces of the first engaging portion and the second engaging portion that are arranged opposite to each other.

17. The actuator for adjusting a display terminal according to claim 14, characterized in that: The end faces of the first engaging portion and the second engaging portion are arranged opposite to each other, and one of the two end faces facing each other has a plurality of locking grooves, and the other has at least one locking protrusion, each of the locking protrusions being suitable for engaging with at least two of the locking grooves so that the second engaging portion is suitable for engaging with the first engaging portion at least in the two engaging positions.

18. The actuator for adjusting a display terminal according to claim 17, characterized in that: The mounting unit includes a rotating disk for mounting the display terminal, the first engaging portion is configured such that the rotating disk faces an end surface of the second engaging portion, and the locking protrusion is formed on the end surface.

19. The actuator for adjusting a display terminal according to claim 18, characterized in that: The locking protrusion is detachably connected to the rotating disk.

20. The actuator for adjusting a display terminal according to claim 17, characterized in that: The locking groove and the locking protrusion both have an arc-shaped cross section.

21. The actuator for adjusting a display terminal according to claim 17, characterized in that: The first engaging portion and the second engaging portion are both in a circular ring shape, and the locking groove and the locking protrusion are both in a sector ring shape that is concentric with the first engaging portion or the second engaging portion.

22. The actuator for adjusting a display terminal according to claim 17, characterized in that: At least one side of the locking protrusion is pressed against a corresponding side of the locking groove so that the locking protrusion is engaged with the locking groove.

23. The actuator for adjusting a display terminal according to claim 22, characterized in that: The width of at least a portion of the locking protrusion is greater than the width of the open end of the locking groove.

24. The actuator for adjusting a display terminal according to claim 23, characterized in that: The width of the locking groove gradually decreases from the open end to the bottom, the width of the locking protrusion gradually decreases from the root to the top, and the width of the locking groove open end is smaller than the width of the root of the locking protrusion.

25. The actuator for adjusting a display terminal according to claim 23, characterized in that: The depth of the locking groove is smaller than the height of the locking protrusion.

26. The actuator for adjusting a display terminal according to claim 23, characterized in that: The locking grooves and the locking protrusions are of the same number and are evenly spaced and arranged along the circumferential direction.

27. The actuator for adjusting a display terminal according to claim 26, characterized in that: There are at least three locking grooves and at least three locking protrusions.

28. The actuator for adjusting a display terminal according to claim 22, characterized in that: The locking groove and the locking protrusion are clearance-matched in the circumferential direction.

29. The actuator for adjusting a display terminal according to claim 28, characterized in that: The width of the open end of the locking groove is greater than the width of the root of the locking protrusion.

30. The actuator for adjusting a display terminal according to claim 28, characterized in that: The depth of the locking groove is greater than the height of the locking protrusion.

31. The actuator for adjusting a display terminal according to claim 28, characterized in that: The locking grooves include multiple groups, and the locking grooves of different groups are staggered along the circumferential direction. When the first engaging portion and the second engaging portion are engaged at one of the engaging positions, the locking protrusions correspond one-to-one to the locking grooves of one group.

32. The actuator for adjusting a display terminal according to claim 31, characterized in that: The angle between the axes of the two corresponding locking grooves in the two groups of locking grooves is 90°.

33. The actuator for adjusting a display terminal according to claim 1, characterized in that: The mounting unit comprises: a mounting bracket, a rotating disk and a mounting shaft, the mounting bracket is connected to the rotating disk, the rotating disk is connected to the mounting shaft, the mounting bracket is used to mount the display terminal, the rotating disk is dynamically coupled to the first engaging portion, the mounting shaft passes through the clutch unit and the driving unit, the elastic member is sleeved outside the mounting shaft, one end of the elastic member presses against an axial limiter fixed to the mounting shaft, and the other end presses against a housing of the driving unit.

34. The actuator for adjusting a display terminal according to claim 33, characterized in that: The other end of the elastic member is pressed against the housing of the driving unit through an elastic member end surface bearing.

35. The actuator for adjusting a display terminal according to claim 33, characterized in that: The mounting bracket is detachably mounted on the rotating disk.

36. The actuator for adjusting a display terminal according to claim 33, characterized in that: The mounting shaft is formed integrally with the rotating disk.

37. The actuator for adjusting a display terminal according to claim 33, characterized in that: The installation shaft is a hollow shaft.

38. The actuator for adjusting a display terminal according to claim 33, characterized in that: The housing of the driving unit and the rotating disk are provided with matching positioning mechanisms so as to enable the display terminal to rotate to a target angle.

39. The actuator for adjusting a display terminal according to claim 38, characterized in that: The target angle is 90°.

40. The actuator for adjusting a display terminal according to claim 38, characterized in that: The housing of the driving unit is provided with two limit stops spaced apart in the circumferential direction, the rotating disk is provided with a positioning pin extending toward the housing of the driving unit, the positioning pin is suitable for pressing against the limit stops, and the positioning mechanism includes the limit stops and the positioning pin.

41. The actuator for adjusting a display terminal according to claim 38, characterized in that: The rotating disk is provided with an arc-shaped limiting groove, the housing of the driving unit is provided with a positioning pin extending toward the limiting groove, the positioning pin is suitable for pressing the end of the limiting groove, and the positioning mechanism includes the limiting groove and the positioning pin.

42. The actuator for adjusting a display terminal according to any one of claims 1 to 41, characterized in that: The driving unit includes: a power source and a reducer, wherein an output shaft of the power source is connected to an input end of the reducer, and an output end of the reducer is connected to the second joint portion.

43. The actuator for adjusting a display terminal according to claim 42, characterized in that: The reducer is a single-stage or multi-stage transmission mechanism.

44. The actuator for adjusting a display terminal according to claim 42, characterized in that: The reducer is a worm gear transmission mechanism.

45. The actuator for adjusting a display terminal according to claim 44, characterized in that: The speed reducer includes a driving worm connected to the power source and a driven spur gear connected to the driving worm.

46. ​​The actuator for adjusting a display terminal according to claim 44, characterized in that: The reducer comprises: A primary active worm gear, the primary active worm gear is fixedly connected to an output shaft of the power source; A primary driven spur gear, the primary driving worm is meshed with the primary driven spur gear, and the primary driven spur gear is connected to the second engaging portion.

47. The actuator for adjusting a display terminal according to claim 46, characterized in that: The included angle between the axis of the primary driving worm and the axis of the primary driven spur gear is an acute angle.

48. The actuator for adjusting a display terminal according to claim 46, characterized in that: The included angle between the axis of the primary active worm and the axis of the primary driven spur gear is α, which satisfies: 82°≤α≤88°.

49. The actuator for adjusting a display terminal according to claim 44, characterized in that: The reducer comprises: A primary active worm gear, the primary active worm gear is fixedly connected to an output shaft of the power source; a primary driven spur gear, the primary driving worm being meshed with the primary driven spur gear; A secondary active worm gear, wherein the secondary active worm gear is coaxially arranged with the primary driven spur gear; A secondary driven spur gear is meshed with the secondary active worm gear, and the secondary driven spur gear is connected to the second engaging portion.

50. The actuator for adjusting a display terminal according to claim 49, characterized in that: The angle between the axis of the primary driving worm and the axis of the primary driven spur gear, and the angle between the axis of the secondary driving worm and the axis of the secondary driven spur gear are both acute angles.

51. The actuator for adjusting a display terminal according to claim 50, characterized in that: The included angle between the axis of the primary active worm and the axis of the primary driven spur gear is α, and the included angle between the axis of the secondary active worm and the axis of the secondary driven spur gear is β, satisfying: 82°≤α≤88°, 82°≤β≤88°.

52. The actuator for adjusting a display terminal according to claim 49, characterized in that: The axis of the primary active worm, the axis of the secondary driven spur gear, and the axis of the clutch unit are parallel.

53. The actuator for adjusting a display terminal according to claim 49, characterized in that: The housing of the driving unit has an axial limiting portion, and the end surface of the secondary driven spur gear facing away from the second engaging portion presses against the axial limiting portion.

54. The actuator for adjusting a display terminal according to claim 49, characterized in that: The first-stage driven spur gear is a plastic part, and the first-stage active worm, the second-stage active worm, and the second-stage driven spur gear are metal parts.

55. The actuator for adjusting a display terminal according to claim 49, characterized in that: The secondary driven spur gear is formed integrally with the second engaging portion.

56. The actuator for adjusting a display terminal according to claim 49, characterized in that: The second engaging portion is made of a self-lubricating material, and the secondary driven spur gear is made of a wear-resistant material.

57. The actuator for adjusting a display terminal according to claim 49, characterized in that: The housing of the drive unit comprises: a shell body, wherein the power source is mounted on the shell body; The casing upper cover is connected to the casing body, the secondary driven spur gear is installed on the casing body, and the casing upper cover has an axial limiting portion for limiting the end face of the secondary driven spur gear.

58. The actuator for adjusting a display terminal according to claim 57, characterized in that: The shell body is a plastic part, and the upper cover of the shell is a metal part.

59. The actuator for adjusting a display terminal according to claim 57, characterized in that: The secondary driven spur gear is pressed against the axial limiting portion via a gear end face bearing.

60. The actuator for adjusting a display terminal according to claim 59, characterized in that: The end face of the secondary driven spur gear is provided with an annular groove, the gear end face bearing is arranged in the annular groove and presses against the bottom wall of the annular groove, and at least a part of the axial limiting portion extends into the annular groove.

61. The actuator for adjusting a display terminal according to claim 57, characterized in that: The casing upper cover is provided with a shaft sleeve, and the secondary driven spur gear is sleeved outside the shaft sleeve.

62. The actuator for adjusting a display terminal according to claim 57, characterized in that: The housing of the drive unit further comprises: A housing rear cover, the housing rear cover is connected to the housing body to close the rear end of the housing body; The casing front cover is connected to the casing body to close the front end of the casing body.

63. A vehicle, characterized in that: include: A display terminal and an actuator as described in any one of claims 1 to 62, wherein the actuator is installed on a vehicle body, and the display terminal is installed on the mounting unit of the actuator.

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