Driving device, multimedia equipment with same and vehicle

Abstract

The utility model discloses a driving device, multimedia equipment with the driving device and a vehicle with the driving device. The rotating shaft is sleeved with the matching shaft sleeve so as to drive the rotating shaft to rotate; and the driving gear is arranged on the rotating shaft in a sleeving mode, and the driving gear is matched with the inclined face of the matched shaft sleeve so as to be suitable for positioning the driving gear in the axial direction and the radial direction. According to the driving device provided by the embodiment of the utility model, the position of the driving gear is limited from the axial direction and the radial direction of the rotating shaft, so that the meshing clearance between the driving gear and other gears is convenient to eliminate, the transmission stability of the driving gear and other gears is convenient to improve, and the noise or abnormal sound generated in the transmission process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of driving, in particular to a driving device and a multimedia device and a vehicle having the driving device. Background Art

[0002] Most of the in-vehicle multimedia devices in the related technologies, such as central control screen, armrest screen, ceiling screen, entertainment screen, camera, etc., have functions such as rotation, flipping, sliding, pitching, and multi-dimensional movement. The movement of the multimedia devices relies on the power output of the driving device. When the multimedia devices are subjected to external forces, there is a possibility of shaking, which will cause a fit gap between the gears of the driving device, affecting the smoothness of the transmission. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a driving device, which is convenient for eliminating the meshing clearance between the driving gear and other gears by limiting the position of the driving gear in the axial and radial directions of the rotating shaft, and is convenient for improving the smoothness of the transmission of the driving gear and other gears, and reducing the noise or abnormal sound generated during the transmission process.

[0004] The utility model also provides a multimedia device having the driving device.

[0005] The utility model also provides a vehicle with the multimedia device.

[0006] According to the first aspect of the present invention, the driving device includes: a rotating shaft; a matching sleeve, which is sleeved on the rotating shaft to drive the rotating shaft to rotate; a driving gear, which is sleeved on the rotating shaft, and the driving gear and the matching sleeve bevel cooperate to be suitable for axially and radially positioning the driving gear.

[0007] The driving device according to the embodiment of the utility model limits the position of the driving gear from the axial and radial directions of the rotating shaft, thereby eliminating the meshing clearance between the driving gear and other gears, improving the smoothness of the transmission of the driving gear and other gears, and reducing the noise or abnormal sound generated during the transmission process.

[0008] In addition, the driving device according to the above embodiment of the utility model may also have the following additional technical features:

[0009] According to some embodiments of the utility model, the inner circumferential wall of the driving gear is provided with an annular first mating surface, the outer circumferential wall of the mating sleeve is provided with an annular second mating surface, and the first mating surface and the second mating surface are bevel-matched.

[0010] According to some embodiments of the present utility model, the mating sleeve cooperates with the rotating shaft key.

[0011] According to some embodiments of the present utility model, a supporting foot is provided on the inner side of the driving gear, and the supporting foot is supported on the rotating shaft to space the driving gear and the rotating shaft in the radial direction of the rotating shaft.

[0012] According to some optional embodiments of the present utility model, the mating sleeve is adapted to contact with the supporting foot to limit the axial position of the mating sleeve.

[0013] According to some embodiments of the utility model, the rotating shaft is provided with a stop protrusion, and the driving gear is clamped between the stop protrusion and the shaft sleeve.

[0014] According to some embodiments of the utility model, the driving device further comprises an elastic stop member, wherein the elastic stop member is connected to the mating sleeve to apply a force to the mating sleeve, wherein the force causes the mating sleeve to have a tendency to move toward the driving gear.

[0015] According to some optional embodiments of the present invention, the elastic stop member is formed as a spring, the outer peripheral wall of the rotating shaft is provided with a fixing portion, and both ends of the elastic stop member are respectively connected to the matching sleeve and the fixing portion.

[0016] According to some specific embodiments of the present invention, the fixing portion is a clamping spring clamped to the rotating shaft.

[0017] In some embodiments, a slot is provided on the rotating shaft, and a plurality of snap-in elastic sheets are provided on the snap spring, and the plurality of snap-in elastic sheets are respectively snap-fitted and fixed in the slot.

[0018] According to some embodiments of the utility model, the driving device further includes: a motor; and a gear set, wherein the gear set cooperates with the motor and the driving gear respectively to drive the driving gear to rotate.

[0019] According to some optional embodiments of the utility model, the gear set includes: a first worm, which is fixed to the output shaft of the motor; a first worm wheel, which is meshed with the first worm to be driven to rotate by the first worm; and a driving gear, which is respectively cooperated with the first worm wheel and the driving gear to drive the driving gear to rotate.

[0020] According to some specific embodiments of the present utility model, the gear set also includes: a second worm, the second worm is fixed to the first worm wheel; a second worm wheel, the second worm wheel is meshed with the second worm to be driven to rotate by the second worm, wherein the driving gear rotates coaxially with the second worm wheel.

[0021] According to some embodiments of the present utility model, the driving device further comprises a housing, the mating sleeve is disposed in the housing, and the rotating shaft is disposed in the housing with a portion extending out of the housing.

[0022] According to a second aspect of the present invention, a multimedia device is provided. The multimedia device includes a multimedia component and a driving device according to the first aspect of the present invention. The driving device is used to drive the multimedia component to rotate.

[0023] By utilizing the driving device according to the embodiment of the first aspect of the utility model, the driving device is used to drive the multimedia component to rotate so as to adjust the position of the multimedia component, thereby enabling the position of the multimedia component to adapt to the needs of the user.

[0024] According to some embodiments of the present invention, the multimedia component is a display screen, a camera, a microphone or a speaker.

[0025] According to a third aspect of the present invention, a vehicle is provided. The vehicle includes the multimedia device according to the second aspect of the present invention.

[0026] According to the vehicle of the embodiment of the utility model, by utilizing the multimedia device according to the embodiment of the second aspect of the utility model and by arranging the multimedia device on the vehicle, it is convenient to improve the interactivity of the vehicle and improve the user experience.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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:

[0029] Figure 1 It is a schematic structural diagram of a driving device according to an embodiment of the utility model.

[0030] Figure 2 It is a structural exploded view of a driving device according to an embodiment of the utility model.

[0031] Figure 3 It is an exploded view of the partial structure of the driving device according to an embodiment of the utility model.

[0032] Figure 4 It is a cross-sectional view of a partial structure of a driving device according to an embodiment of the utility model.

[0033] Figure 5It is a structural schematic diagram of a rotating shaft and a matching sleeve according to an embodiment of the utility model.

[0034] Figure 6 It is a structural cross-sectional view of a rotating shaft and a matching sleeve according to an embodiment of the utility model.

[0035] Figure 7 It is a schematic structural diagram of a matching shaft sleeve according to an embodiment of the utility model.

[0036] Figure 8 It is a structural schematic diagram of a motor and a gear set according to an embodiment of the utility model.

[0037] Fig. 9 It is a structural schematic diagram of a multimedia device according to an embodiment of the utility model.

[0038] Reference numerals: driving device 1, rotating shaft 10, stop protrusion 11, slot 12,

[0039] Matching sleeve 20, second matching protrusion 201, second matching surface 21, driving gear 30, first matching protrusion 301, first matching surface 31, supporting foot 32,

[0040] Elastic stop member 40, retaining spring 50, snap-on spring piece 51, motor 61, output shaft 611, first worm 621, first worm wheel 622, driving gear 63, second worm 641, second worm wheel 642, housing 65, first shell portion 651, second shell portion 652, multimedia device 9, multimedia component 91. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments 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.

[0042] The driving device 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0043] like Figure 1-Figure 8 As shown, the driving device 1 according to the embodiment of the utility model includes a rotating shaft 10 , a matching sleeve 20 and a driving gear 30 .

[0044] The mating sleeve 20 is sleeved on the rotating shaft 10 to drive the rotating shaft 10 to rotate, and the driving gear 30 is sleeved on the rotating shaft 10. The driving gear 30 and the mating sleeve 20 bevels are matched to be suitable for axially and radially positioning the driving gear 30, providing a restraining force for the driving gear 30 in the axial and radial directions of the rotating shaft 10, and then limiting the position of the driving gear 30 in the axial and radial directions of the rotating shaft 10, so as to eliminate the fitting clearance between the driving gear 30 and other gears in the axial direction of the rotating shaft 10, and eliminate the fitting clearance between the driving gear 30 and other gears in the radial direction of the rotating shaft 10, so that the driving gear 30 and other gears can be transmitted stably, which is convenient for improving the smoothness of the transmission of the driving gear 30 and other gears, and reducing the noise or abnormal sound generated during the transmission process.

[0045] Among them, when the driving gear 30 rotates, there is friction between the inclined surface of the driving gear 30 and the inclined surface of the matching sleeve 20, so that the driving gear 30 can drive the matching sleeve 20 to rotate, and the matching sleeve 20 drives the rotating shaft 10 to rotate when rotating, so that the rotating shaft 10 can output torsional force. Specifically, when the driving gear 30 drives the matching sleeve 20 to rotate, there is static friction between the driving gear 30 and the matching sleeve 20.

[0046] In some special cases, the mating sleeve 20 can move axially relative to the rotating shaft 10, and the mating sleeve 20 and the driving gear 30 slide relative to each other. For example, when the output end of the rotating shaft 10 is subjected to a large external torque, the rotating shaft 10 drives the mating sleeve 20 to rotate. At this time, the mating sleeve 20 overcomes the static friction of the inclined surface and slides relative to the driving gear 30. At this time, the mating sleeve 20 will not drive the driving gear 30 to rotate when rotating, so as to avoid the large torque at the rotating shaft 10 from being transmitted to the driving gear 30, thereby facilitating the protection of the driving gear 30 and other gears, and avoiding damage to the driving gear 30 and other gears due to excessive interaction force between the driving gear 30 and other gears.

[0047] Therefore, the driving device 1 according to the embodiment of the utility model limits the position of the driving gear 30 from the axial and radial directions of the rotating shaft 10, so as to eliminate the meshing clearance between the driving gear 30 and other gears, improve the smoothness of the transmission between the driving gear 30 and other gears, and reduce the noise or abnormal sound generated during the transmission process.

[0048] The driving device 1 according to a specific embodiment of the present utility model is described below with reference to the accompanying drawings.

[0049] In some specific embodiments of the present invention, Figure 1-Figure 8 As shown, the driving device 1 includes a rotating shaft 10 , a matching sleeve 20 and a driving gear 30 .

[0050] In some embodiments of the utility model, the inner circumferential wall of the driving gear 30 is provided with an annular first mating surface 31, and the outer circumferential wall of the mating sleeve 20 is provided with an annular second mating surface 21, and the first mating surface 31 and the second mating surface 21 are beveled together. For the convenience of description, the axial direction of the rotating shaft 10 is defined as the first direction, and the radial direction of the rotating shaft 10 is defined as the second direction. When the mating sleeve 20 moves along the first direction, the degree of mating between the first mating surface 31 and the second mating surface 21 is different.

[0051] Specifically, when the mating sleeve 20 is mounted on the rotating shaft 10, the mating sleeve 20 is moved in the first direction toward the direction close to the driving gear 30 and the first mating surface 31 and the second mating surface 21 are mated. At this time, the first mating surface 31 and the second mating surface 21 can be used to limit the position of the driving gear 30 in the first direction and the second direction. At this time, the driving gear 30 drives the mating sleeve 20 to rotate by the static friction between the first mating surface 31 and the second mating surface 21. In some special cases, for example, when the output end of the rotating shaft 10 is subjected to a large external torque, the rotating shaft 10 drives the mating sleeve 20 to rotate. At this time, the mating sleeve 20 overcomes the static friction of the inclined surface mating and slides relative to the driving gear 30. At this time, when the mating sleeve 20 moves in the first direction toward the direction away from the driving gear 30, there is a gap between the first mating surface 31 and the second mating surface 21 to separate the mating of the mating sleeve 20 and the driving gear 30, so as to prevent the mating sleeve 20 from driving the driving gear 30 to rotate and to prevent the torque at the rotating shaft 10 from being transmitted to the driving gear 30.

[0052] In some embodiments, Figure 4 , Figure 7 As shown, the first mating surface 31 and the second mating surface 21 are conical surfaces with the same extension direction, and the central axes of the first mating surface 31 and the second mating surface 21 both extend along the first direction. The driving gear 30 is meshed with the active gear 63 of the driving device 1. When the first mating surface 31 and the second mating surface 21 are in place, the position of the driving gear 30 in the first direction and the second direction can be limited, thereby eliminating the meshing clearance between the driving gear 30 and the active gear 63 along the first direction, and eliminating the meshing clearance between the driving gear 30 and the active gear 63 along the second direction, so that the active gear 63 can smoothly drive the driving gear 30 to rotate, thereby reducing the abnormal sound and noise generated by the driving gear 30 and the active gear 63 during transmission.

[0053] The angle between the extension direction of the first mating surface 31 and the second mating surface 21 and the first direction is greater than 0° and less than 90°. For the convenience of description, the angle between the first mating surface 31 and the second mating surface 21 and the first direction is referred to as the first angle, and the friction force between the first mating surface 31 and the second mating surface 21 is related to the size of the first angle.

[0054] In some cases, for example, when the output end of the rotating shaft 10 is subjected to a large external torque, when the rotating shaft 10 drives the mating sleeve 20 to rotate, when the rotating shaft 10 drives the mating sleeve 20 to rotate, the mating sleeve 20 overcomes the static friction of the inclined surface matching and slides relative to the driving gear 30. At this time, when the mating sleeve 20 moves along the axial direction of the rotating shaft 10, the first mating surface 31 and the second mating surface 21 slide relative to each other, so that the first mating surface 31 and the second mating surface 21 are conical surfaces with the same extension direction, so as to reduce the wear between the first mating surface 31 and the second mating surface 21.

[0055] In some embodiments of the present invention, Figure 5 , Figure 6 As shown, the mating sleeve 20 is key-matched with the rotating shaft 10 to achieve synchronous rotation of the mating sleeve 20 and the rotating shaft 10 and the mating sleeve 20 can move axially relative to the rotating shaft 10. Specifically, the mating sleeve 20 and the rotating shaft 10 are rotated synchronously, so that when the driving gear 30 rotates, the friction between the driving gear 30 and the mating sleeve 20 drives the mating sleeve 20 to rotate. The mating sleeve 20 can drive the rotating shaft 10 to rotate by the key, so that the rotating shaft 10 can output rotational force outward.

[0056] In addition, the mating sleeve 20 is movable relative to the rotating shaft 10 so that when the output end of the rotating shaft 10 is subjected to a large external torque, the rotation of the mating sleeve 20 and the driving gear 30 can be separated. Specifically, by adjusting the degree of bevel fit between the mating sleeve 20 and the driving gear 30, the fit between the mating sleeve 20 and the driving gear 30 can be separated, thereby preventing the torque at the rotating shaft 10 from being transmitted to the driving gear 30.

[0057] The mating sleeve 20 and the rotating shaft 10 may be keyed or splined, or knurled or pinned on the shaft to limit relative rotation but not relative movement. No further restrictions are made here.

[0058] In some embodiments, the inclined surface of the driving gear 30 is an annular first mating surface 31, and the inclined surface of the mating sleeve 20 is an annular second mating surface 21. The mating sleeve 20 and the rotating shaft 10 are split structures. Compared with directly setting the second mating surface 21 on the rotating shaft 10, setting the second mating surface 21 on the mating sleeve 20 is less costly.

[0059] In some embodiments of the present invention, Figure 4As shown, a supporting foot 32 is provided on the inner side of the driving gear 30, and the supporting foot 32 is supported on the rotating shaft 10 to space the driving gear 30 and the rotating shaft 10 in the radial direction of the rotating shaft 10, so as to reduce the contact area between the driving gear 30 and the rotating shaft 10, so as to reduce the friction between the driving gear 30 and the rotating shaft 10, avoid the driving gear 30 directly driving the rotating shaft 10 to rotate, and avoid the rotating shaft 10 directly transmitting the torque to the driving gear 30 when the rotating shaft 10 is subjected to a large external torque, so as to avoid excessive force between the driving gear 30 and other gears, resulting in damage to the driving gear 30 and other gears.

[0060] In some optional embodiments of the present invention, the mating sleeve 20 is adapted to contact with the supporting feet 32 ​​to limit the axial position of the mating sleeve 20 , so as to define the position of the mating sleeve 20 .

[0061] like Figure 4 , Figure 7 As shown, in this embodiment, the driving gear 30 has a first mating protrusion 301 on the side facing the mating sleeve 20, and the mating sleeve 20 has a second mating protrusion 201 on the side facing the driving gear 30. Both the first mating protrusion 301 and the second mating protrusion 201 extend along the axial direction of the rotating shaft 10. The supporting foot 32 is located at one end of the first mating protrusion 301 away from the second mating protrusion 201. The supporting foot 32 extends radially along the rotating shaft 10. The first mating protrusion 301 is located on the outside of the second mating protrusion 201. The inner circumferential surface of the first mating protrusion 301 defines a first mating surface 31, and the outer circumferential surface of the second mating protrusion 201 defines a second mating surface 21. The first mating surface 31 and the second mating surface 21 are annular inclined surfaces with the same extension direction.

[0062] The end of the second mating protrusion 201 stops at the supporting foot 32 to limit the position of the driving gear 30 along the first direction, thereby ensuring the mating of the first mating surface 31 and the second mating surface 21, so that the driving gear 30 can drive the mating sleeve 20 to rotate when rotating, and the mating sleeve 20 can drive the rotating shaft 10 to rotate, so that the rotating shaft 10 can output rotational force outward.

[0063] Among them, in special circumstances, such as when the rotating shaft 10 is subjected to a large external torque, the mating sleeve 20 overcomes the static friction between the first mating surface 31 and the second mating surface 21 and slides along the axial direction of the rotating shaft 10 in the direction away from the driving gear 30. At this time, the first mating surface 31 and the second mating surface 21 are separated, and the end of the second mating protrusion 201 no longer stops at the supporting foot 32 to achieve the separation of the driving gear 30 and the mating sleeve 20. At this time, when the rotating shaft 10 drives the mating sleeve 20 to rotate, the mating sleeve 20 will not transmit the torsional force to the driving gear 30 to avoid the driving gear 30 being damaged by excessive force.

[0064] In some embodiments of the present invention, Figure 4 As shown, the rotating shaft 10 is provided with a stop protrusion 11, and the driving gear 30 is clamped between the stop protrusion 11 and the matching sleeve 20 to limit the axial position of the driving gear 30 on the rotating shaft 10, so that the driving gear 30 can smoothly drive the matching sleeve 20 to rotate when rotating, and the matching sleeve 20 can smoothly drive the rotating shaft 10 to rotate when rotating, so that the rotating shaft 10 can output rotational force.

[0065] In some embodiments of the present invention, Figure 4 As shown, the driving device 1 also includes an elastic stop member 40, which is connected to the mating sleeve 20 to apply a force to the mating sleeve 20. The force causes the mating sleeve 20 to have a tendency to move toward the driving gear 30, so that the mating sleeve 20 and the driving gear 30 are beveled and matched, so that there is friction between the mating sleeve 20 and the driving gear 30, and then when the driving gear 30 rotates, the static friction force can be used to drive the mating sleeve 20 to rotate, and when the mating sleeve 20 rotates, it can drive the rotating shaft 10 to rotate, so that the rotating shaft 10 can output rotational force outward.

[0066] Among them, the elastic stop member 40 drives the matching sleeve 20 to slide in the direction close to the driving gear 30 to limit the position of the driving gear 30 along the first direction and the second direction, thereby eliminating the meshing clearance between the driving gear 30 and other gears, so that the inclined surfaces of the matching sleeve 20 and the driving gear 30 match each other, and then when the driving gear 30 rotates, it can drive the matching sleeve 20 to rotate. When the matching sleeve 20 rotates, it can smoothly drive the rotating shaft 10 to rotate, so that the rotating shaft 10 can output rotational force.

[0067] When the rotating shaft 10 is subjected to a large external torque, the rotating shaft 10 will drive the matching sleeve 20 to rotate. At this time, the matching sleeve 20 overcomes the static friction between the inclined surfaces and the force of the elastic stop member 40 and slides in a direction away from the driving gear 30 to achieve the separation of the matching sleeve 20 and the driving gear 30, so that the driving gear 30 will not rotate with the matching sleeve 20 and the rotating shaft 10, thereby facilitating the reduction of the force acting on the driving gear 30 and facilitating the improvement of the service life of the driving gear 30.

[0068] In some embodiments, the inclined surface of the driving gear 30 is an annular first mating surface 31, and the inclined surface of the mating sleeve 20 is an annular second mating surface 21. The first mating surface 31 and the second mating surface 21 are conical surfaces. When the rotating shaft 10 is subjected to a large external torque, the mating sleeve 20 slides relative to the driving gear 30, which facilitates reducing the wear between the mating sleeve 20 and the driving gear 30.

[0069] In some embodiments, the driving gear 30 is meshed with the active gear 63 of the driving device 1. Since the elastic stop member 40 has a force on the mating sleeve 20 toward the driving gear 30, the first mating surface 31 of the driving gear 30 and the second mating surface 21 of the mating sleeve 20 are matched to position the driving gear 30 in the axial and radial directions of the rotating shaft 10, thereby eliminating the gap between the driving gear 30 and the active gear 63 along the first direction and the second direction. In other words, the elastic stop member 40 can automatically eliminate the gap between the driving gear 30 and the active gear 63. In this way, when the position of the driving device 1 is moved or the driving device 1 is subjected to external force, the gap between the driving gear 30 and the active gear 63 can be automatically eliminated without manually adjusting the position of the driving gear 30.

[0070] Among them, when the rotating shaft 10 is subjected to a large external torque and drives the matching sleeve 20 to rotate, the matching sleeve 20 overcomes the static friction of the inclined surface matching and the elastic stop member 40 and slides relative to the driving gear 30. At this time, there is a gap between the first matching surface 31 and the second matching surface 21 to separate the rotation of the matching sleeve 20 and the driving gear 30, so that the driving gear 30 will not rotate with the matching sleeve 20 and the rotating shaft 10, avoiding the driving gear 30 from rotating when the rotating shaft 10 is subjected to a large external torque, avoiding excessive force between the driving gear 30 and the active gear 63, so as to protect the driving gear 30 and the active gear 63.

[0071] In some optional embodiments of the present invention, Figure 4 As shown, the elastic stop member 40 is formed as a spring, and the outer peripheral wall of the rotating shaft 10 is provided with a fixing portion. The two ends of the elastic stop member 40 are respectively connected to the matching sleeve 20 and the fixing portion to limit the position of the spring so that the spring is in a compressed state, so that the spring can apply a force toward the driving gear 30 to the matching sleeve 20, thereby enabling the matching sleeve 20 and the driving gear 30 to be beveled, and then when the driving gear 30 rotates, it can drive the matching sleeve 20 to rotate, and utilize the matching sleeve 20 to drive the rotating shaft 10 to rotate.

[0072] In some specific embodiments of the present invention, Figure 3 , Figure 4 As shown, the fixing part is a clamping spring 50 clamped on the rotating shaft 10 , which makes it easy to install the fixing part on the rotating shaft 10 or remove the fixing part from the rotating shaft 10 .

[0073] Specifically, when installing the spring on the rotating shaft 10, the spring should be first sleeved on the rotating shaft 10 so that one end of the spring is connected to the matching sleeve 20, and then the spring is compressed, and the retaining spring 50 is clamped on the rotating shaft 10 so that the other end of the spring stops at the retaining spring 50. At this time, the spring is in a compressed state, and the spring has a force on the matching sleeve 20 toward the driving gear 30, so that the matching sleeve 20 and the driving gear 30 are matched with each other on the inclined surface, so that the driving gear 30 can drive the matching sleeve 20 to rotate.

[0074] In some embodiments, Figure 4 As shown, a slot 12 is provided on the rotating shaft 10 , and a plurality of snap-fit ​​springs 51 are provided on the snap spring 50 . The plurality of snap-fit ​​springs 51 are snap-fitted and fixed in the slot 12 respectively, so as to fix the snap spring 50 on the rotating shaft 10 .

[0075] A plurality of spaced-apart snap-in springs 51 are provided on the snap spring 50 , so that the snap-in springs 51 can be deformed, thereby facilitating fixing the snap-in springs 51 in the slots 12 and fixing the snap spring 50 on the rotating shaft 10 .

[0076] In some embodiments of the present invention, Figure 2 , Figure 8 As shown, the driving device 1 also includes a motor 61 and a gear set. The gear set cooperates with the motor 61 and the driving gear 30 respectively to drive the driving gear 30 to rotate. The gear set is used to reduce the rotation speed transmitted from the motor 61 to the driving gear 30 and increase the torque transmitted from the motor 61 to the driving gear 30, so that the driving gear 30 can smoothly drive the matching sleeve 20 to rotate when rotating, and the matching sleeve 20 can drive the rotating shaft 10 to rotate when rotating.

[0077] In some optional embodiments of the present invention, Figure 8 As shown, the gear set includes a first worm 621, a first worm wheel 622 and a driving gear 63. The first worm 621 is fixed to the output shaft 611 of the motor 61. The first worm wheel 622 meshes with the first worm 621 to be driven to rotate by the first worm 621. The driving gear 63 cooperates with the first worm wheel 622 and the driving gear 30 respectively. The first worm 621 and the first worm wheel 622 transmit the output torque of the motor 61 to the driving gear 63 to reduce the rotation speed transmitted from the motor 61 to the driving gear 63 and increase the torque transmitted from the motor 61 to the driving gear 63, so that the driving gear 63 drives the driving gear 30 to rotate, so that the driving gear 30 can drive the matching sleeve 20 to rotate when rotating, and the matching sleeve 20 drives the rotating shaft 10 to rotate.

[0078] In addition, by transmitting the rotation of the motor 61 to the driving gear 63 through the first worm wheel 622 and the first worm 621, the rotation direction of the motor 61 to the driving gear 63 can be changed, which is convenient for realizing the compact arrangement of the gear set and the motor 61, and then it is convenient to reduce the space occupied by the motor 61 and the gear set in the drive device 1, so as to realize the miniaturized design of the drive device 1.

[0079] In some optional embodiments of the present invention, Figure 8 As shown, the gear set also includes a second worm 641 and a second worm wheel 642. The second worm 641 is fixed to the first worm wheel 622. The second worm wheel 642 meshes with the second worm 641 to be driven to rotate by the second worm 641. The driving gear 63 rotates coaxially with the second worm wheel 642. The second worm wheel 642 and the second worm wheel 642 are used to further achieve speed reduction and torque increase, thereby increasing the torque transmitted to the driving gear 30, so that the driving gear 30 can drive the matching sleeve 20 to rotate, and the matching sleeve 20 is used to drive the rotating shaft 10 to rotate.

[0080] Specifically, when the output shaft 611 of the motor 61 drives the first worm 621 to rotate, since the first worm 621 and the first worm wheel 622 are meshed, the first worm 621 drives the first worm wheel 622 to rotate, thereby realizing a first-stage speed reduction and torque increase. Since the second worm 641 is fixed to the first worm wheel 622, when the first worm wheel 622 rotates, it drives the second worm 641 to rotate, and the second worm 641 is meshed with the second worm wheel 642, and the second worm 641 drives the second worm wheel 642 to rotate, thereby realizing a second-stage speed reduction and torque increase. When the second worm wheel 642 rotates, it drives the driving gear 63 to rotate, and the driving gear 63 outputs torque, thereby driving the driving gear 30 to rotate.

[0081] In addition, there is a self-locking force between the first worm 621 and the first worm wheel 622, and there is a self-locking force between the second worm 641 and the second worm wheel 642. When a multimedia component 91 such as a display screen, a camera, a speaker or a microphone is arranged on the rotating shaft 10, the position of the multimedia component 91 can be limited, so that the multimedia component 91 can be self-locked at any position. Specifically, the self-locking force between the first worm 621 and the first worm wheel 622 and the self-locking force between the second worm 641 and the second worm wheel 642 are sufficient to overcome the gravity of the multimedia component 91, so as to limit the position of the rotating shaft 10 when the motor 61 stops working, and then limit the position of the multimedia component 91.

[0082] In some optional embodiments of the present invention, Figure 1 , Figure 2As shown, the driving device 1 also includes a shell 65, and the matching sleeve 20 is arranged in the shell 65 to protect the matching sleeve 20. The rotating shaft 10 is arranged in the shell 65 and a part of it extends out of the shell 65 so that the rotating shaft 10 can output rotational force outward.

[0083] In some embodiments, the shell 65 includes a first shell portion 651 and a second shell portion 652, and the first shell portion 651 and the second shell portion 652 are detachably connected. The first shell portion 651 and the second shell portion 652 jointly define a placement cavity, and the gear group, the motor 61, the matching sleeve 20, the driving gear 30 and a portion of the rotating shaft 10 are located in the placement cavity, so that the shell 65 can be used to protect the gear group, the motor 61, the matching sleeve 20, the driving gear 30 and the rotating shaft 10 to prevent large particles of dust or foreign matter from entering the driving device 1.

[0084] In some specific embodiments of the present invention, a portion of the rotating shaft 10 extending out of the housing 65 is used to install a display screen, a camera, a microphone or a speaker, so as to drive the display screen, the camera, the microphone or the speaker to rotate. When the display screen, the camera, the microphone or the speaker is subjected to a large external torque and drives the rotating shaft 10 to rotate, the rotating shaft 10 drives the matching sleeve 20 to rotate. Since the matching sleeve 20 and the driving gear 30 are matched with the inclined surface and the motor 61 does not drive the driving gear 63 to rotate at this time, the matching sleeve 20 can overcome the static friction between the inclined surfaces and the force of the elastic stop member 40 and slide in a direction away from the driving gear 30, thereby realizing the separation of the matching sleeve 20 and the driving gear 30, so that the torque at the matching sleeve 20 will not be transmitted to the driving gear 30, thereby avoiding the torque at the rotating shaft 10 from being transmitted to the gear set and the motor 61, thereby avoiding damage to the driving gear 30, the gear set and the motor 61.

[0085] Among them, the driving device 1 can drive the display screen, camera, microphone or speaker to rotate in a clockwise direction, and can also drive the display screen, camera, microphone or speaker to rotate in a counterclockwise direction. This can be achieved by simply changing the rotation direction of the output shaft 611 of the motor 61.

[0086] The following describes a multimedia device 9 according to an embodiment of the present utility model. Fig. 9 As shown, the multimedia device 9 according to an embodiment of the present invention includes a multimedia piece 91 and a driving device 1 according to the above embodiment of the present invention, and the driving device 1 is used to drive the multimedia piece 91 to rotate to adjust the position of the multimedia piece 91, so that the position of the multimedia piece 91 can adapt to the needs of the user.

[0087] According to the multimedia device 9 of the embodiment of the utility model, the driving device 1 is used to drive the multimedia component 91 to rotate so as to adjust the position of the multimedia component 91, so that the position of the multimedia component 91 can adapt to the needs of the user.

[0088] In some embodiments of the utility model, the multimedia component 91 is a display screen, a camera, a microphone or a speaker. The driving device can adjust the position of the multimedia component 91 relative to the user by rotating the multimedia component 91, so that the multimedia component 91 is rotated to a position suitable for the user, thereby improving the user's comfort.

[0089] For example, the display screen is a ceiling screen of the vehicle, and the driving device 1 can drive the display screen to rotate so that the display screen can be retracted to the roof when the display screen is not in use to prevent the user from colliding with the display screen. When the display screen is in use, the display screen can be rotated to an unfolded state and the angle of the display screen relative to the vertical direction can be adjusted to improve the viewing comfort of the user.

[0090] The vehicle according to the embodiment of the present invention is described below. The vehicle according to the embodiment of the present invention includes the multimedia device 9 according to the above-mentioned embodiment of the present invention.

[0091] The vehicle according to the embodiment of the utility model, by utilizing the multimedia device 9 according to the above-mentioned embodiment of the utility model and by arranging the multimedia device 9 on the vehicle, can improve the interactivity of the vehicle and improve the user experience.

[0092] Other structures and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0093] In the description of the present utility model, 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 drawings, and are only for the convenience of describing the present utility model 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 utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0094] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0095] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0096] 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 utility model. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0097] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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. A driving device (1), characterized in that: include: A rotating shaft (10); A matching sleeve (20), wherein the matching sleeve (20) is externally mounted on the rotating shaft (10) to drive the rotating shaft (10) to rotate; A driving gear (30) is disposed on the outer shell of the rotating shaft (10); the driving gear (30) and the matching sleeve (20) are matched with each other at inclined surfaces to be suitable for positioning the driving gear (30) in the axial direction and in the radial direction.

2. The drive device (1) according to claim 1, characterized in that The inner peripheral wall of the driving gear (30) is provided with an annular first matching surface (31), and the outer peripheral wall of the matching sleeve (20) is provided with an annular second matching surface (21), and the first matching surface (31) and the second matching surface (21) are matched with each other in an inclined manner.

3. The drive device (1) according to claim 1, characterized in that The matching shaft sleeve (20) is key-matched with the rotating shaft (10).

4. The drive device (1) according to claim 1, characterized in that A supporting foot (32) is provided on the inner side of the driving gear (30), and the supporting foot (32) is supported on the rotating shaft (10) to space the driving gear (30) and the rotating shaft (10) in a radial direction of the rotating shaft (10).

5. The drive device (1) according to claim 4, characterized in that The matching sleeve (20) is adapted to contact the supporting foot (32) to limit the axial position of the matching sleeve (20).

6. The drive device (1) according to claim 1, characterized in that The rotating shaft (10) is provided with a stop protrusion (11), and the driving gear (30) is sandwiched between the stop protrusion (11) and the matching shaft sleeve (20).

7. The drive device (1) according to any one of claims 1 to 6, characterized in that: It also includes an elastic stop member (40), which is connected to the matching sleeve (20) to apply a force to the matching sleeve (20), and the force causes the matching sleeve (20) to have a tendency to move toward the driving gear (30).

8. The drive device (1) according to claim 7, characterized in that The elastic stop member (40) is formed as a spring, the outer peripheral wall of the rotating shaft (10) is provided with a fixing portion, and the two ends of the elastic stop member (40) are respectively connected to the matching shaft sleeve (20) and the fixing portion.

9. The drive device (1) according to claim 8, characterized in that The fixing portion is a clamping spring (50) clamped on the rotating shaft (10).

10. The drive device (1) according to claim 9, characterized in that The rotating shaft (10) is provided with a clamping slot (12), and the clamping spring (50) is provided with a plurality of clamping elastic sheets (51), and the plurality of clamping elastic sheets (51) are respectively clamped and fixed in the clamping slot (12).

11. The drive device (1) according to claim 1, characterized in that Also includes: Motor (61); A gear set, wherein the gear set cooperates with the motor (61) and the driving gear (30) respectively to drive the driving gear (30) to rotate.

12. The drive device (1) according to claim 11, characterized in that The gear set comprises: a first worm gear (621), wherein the first worm gear (621) is fixed to an output shaft (611) of the motor (61); a first worm wheel (622), the first worm wheel (622) meshingly cooperating with the first worm (621) to be driven to rotate by the first worm (621); A driving gear (63), wherein the driving gear (63) cooperates with the first worm gear (622) and the driving gear (30) respectively to drive the driving gear (30) to rotate.

13. The drive device (1) according to claim 12, characterized in that The gear set also includes: a second worm (641), the second worm (641) being fixed to the first worm wheel (622); A second worm wheel (642), the second worm wheel (642) meshes with the second worm (641) to be driven to rotate by the second worm (641), wherein the driving gear (63) rotates coaxially with the second worm wheel (642).

14. The drive device (1) according to claim 1, characterized in that The driving device (1) further comprises a housing (65), the matching sleeve (20) being arranged in the housing (65), and the rotating shaft (10) being arranged in the housing (65) and a part of which protrudes out of the housing (65).

15. A multimedia device (9), characterized in that It comprises a multimedia piece (91) and a driving device (1) according to any one of claims 1 to 14, wherein the driving device (1) is used for driving the multimedia piece (91) to rotate.

16. The multimedia device (9) according to claim 15, characterized in that The multimedia component (91) is a display screen, a camera, a microphone or a speaker.

17. A vehicle, characterized in that: Comprising the multimedia device (9) as claimed in claim 15 or 16.

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