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 driving gear sleeves the rotating shaft; and the positioning assembly has a positioning state, and in the positioning state, the positioning assembly is configured to be matched with the driving gear and the rotating shaft so as to position and adjust the axial position of the driving gear. According to the driving device provided by the embodiment of the utility model, the axial position of the driving gear is positioned and adjusted, 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 can eliminate the meshing clearance between the driving gear and other gears by positioning and adjusting the axial position of the driving gear, thereby 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 driving gear, the driving gear is outermostly disposed on the rotating shaft; a positioning assembly, the positioning assembly has a positioning state, and in the positioning state the positioning assembly is configured to cooperate with the driving gear and the rotating shaft respectively to position and adjust the axial position of the driving gear.

[0007] The driving device according to the embodiment of the utility model locates and adjusts the axial position of the driving gear, thereby facilitating elimination of 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 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, one of the rotating shaft and the driving gear is provided with a positioning groove; the positioning assembly includes a positioning member and an elastic member, the elastic member is provided at the other of the rotating shaft and the driving gear, and the elastic member is connected to the positioning member to apply a force to the positioning member that cooperates with the positioning groove.

[0010] According to some optional embodiments of the utility model, in the positioning state, the positioning member cooperates with the positioning groove, and the positioning assembly also has a released state, in which the positioning member is disengaged from the positioning groove so that the driving gear can move axially relative to the rotating shaft.

[0011] According to some optional embodiments of the present utility model, the positioning groove is formed as an arc surface, and the positioning member and the arc surface of the positioning groove match.

[0012] According to some optional embodiments of the present invention, the driving device further includes an adjusting member, and the adjusting member cooperates with the elastic member to adjust the elasticity of the elastic member.

[0013] According to some specific embodiments of the present utility model, the adjusting member cooperates with the rotating shaft and another thread of the driving gear.

[0014] According to some embodiments of the utility model, a mating protrusion is provided on the outer peripheral wall of the rotating shaft, and in the positioning state, the positioning assembly respectively cooperates with the mating protrusion and the driving gear.

[0015] According to some optional embodiments of the utility model, the driving device also includes an elastic stop member, which is arranged on the side of the driving gear away from the mating protrusion, and the elastic stop member cooperates with the driving gear to apply a force to the driving gear, and the force makes the driving gear have a tendency to move toward the mating protrusion so that the positioning assembly maintains the positioning state.

[0016] According to some specific embodiments of the present utility model, 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 driving gear and the fixing portion.

[0017] In some embodiments, the fixing portion is a clip connected to the rotating shaft.

[0018] In some examples, a slot is provided on the rotating shaft, and a plurality of snap-in springs are provided on the snap spring at intervals, and the plurality of snap-in springs are snap-fitted and fixed in the slot.

[0019] 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.

[0020] 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.

[0021] According to some specific embodiments of the present invention, the gear set also includes: a second worm, which is fixed to the first worm wheel; a second worm wheel, which 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.

[0022] According to some embodiments of the present utility model, the driving device further includes a housing, the driving gear is disposed in the housing, and the rotating shaft is disposed in the housing with a portion extending out of the housing.

[0023] 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.

[0024] 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.

[0025] According to some embodiments of the present invention, the multimedia component is a display screen, a camera, a microphone or a speaker.

[0026] 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.

[0027] The vehicle according to the embodiment of the utility model, by utilizing the multimedia device according to the embodiment of the first aspect of the utility model and by arranging the multimedia device on the vehicle, facilitates improving the interactivity of the vehicle and improving the user experience.

[0028] 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

[0029] 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:

[0030] Figure 1 It is a schematic structural diagram of a driving device according to an embodiment of the utility model.

[0031] Figure 2 It is a structural exploded view of a driving device according to an embodiment of the utility model.

[0032] Figure 3 It is an exploded view of a partial structure of a driving device in one embodiment of the utility model.

[0033] Figure 4 It is a cross-sectional view of a partial structure of a driving device according to an embodiment of the utility model.

[0034] Figure 5 It is a schematic structural diagram of a driving gear and a positioning member according to an embodiment of the utility model.

[0035] Figure 6 It is a cross-sectional view of a partial structure of a driving device according to another embodiment of the utility model.

[0036] Figure 7 It is a structural schematic diagram of a motor and a gear set according to an embodiment of the utility model.

[0037] Figure 8 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, matching protrusion 11, slot 12, second matching hole 13,

[0039] driving gear 30, matching portion 31, gear portion 32, elastic stop member 40, snap spring 50, snap spring 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 housing portion 651, second housing portion 652,

[0040] Gasket 71 , adjusting member 72 , positioning groove 73 , positioning assembly 80 , positioning member 81 , elastic member 82 , multimedia device 9 , multimedia member 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 7 As shown, the driving device 1 according to the embodiment of the present utility model includes a rotating shaft 10 , a driving gear 30 and a positioning assembly 80 .

[0044] The driving gear 30 is externally mounted on the rotating shaft 10, and the positioning assembly 80 has a positioning state. In the positioning state, the positioning assembly 80 is configured to cooperate with the driving gear 30 and the rotating shaft 10 respectively to position and adjust the axial position of the driving gear 30, and then limit the position of the driving gear 30 after adjusting the axial position of the driving gear 30, so as to eliminate the meshing clearance between the driving gear 30 and other gears in the axial direction of the rotating shaft 10, improve the smoothness of the transmission of the driving gear 30 and other gears, and reduce the noise or abnormal sound generated during the transmission process.

[0045] Specifically, when the positioning assembly 80 is in the positioning state, the driving gear 30 can drive the rotating shaft 10 to rotate through the positioning assembly 80 when rotating, so that the rotating shaft 10 can output a rotational force outward.

[0046] According to the driving device 1 of the embodiment of the utility model, by positioning and adjusting the axial position of the driving gear 30, it is convenient to eliminate the meshing clearance between the driving gear 30 and other gears, thereby improving the smoothness of the transmission between the driving gear 30 and other gears and reducing the noise or abnormal sound generated during the transmission process.

[0047] The driving device 1 according to a specific embodiment of the present utility model is described below with reference to the accompanying drawings.

[0048] In some specific embodiments of the present invention, Figure 1-Figure 7 As shown, the driving device 1 includes a rotating shaft 10 , a driving gear 30 and a positioning assembly 80 .

[0049] In some embodiments of the present invention, Figure 4 , Figure 6 As shown, one of the rotating shaft 10 and the driving gear 30 is provided with a positioning groove 73, and the positioning assembly 80 includes a positioning member 81 and an elastic member 82. The elastic member 82 is provided at the other of the rotating shaft 10 and the driving gear 30. The elastic member 82 is connected to the positioning member 81 to apply a force to the positioning member 81 that cooperates with the positioning groove 73, so as to use the elasticity of the elastic member 82 itself to fine-tune the axial position of the driving gear 30, thereby eliminating the meshing clearance between the driving gear 30 and other gears in the axial direction of the rotating shaft 10.

[0050] In some optional embodiments of the present invention, when the positioning assembly 80 is in a positioning state, the positioning member 81 cooperates with the positioning groove 73 to utilize the positioning member 81 to achieve the cooperation between the driving gear 30 and the rotating shaft 10. At this time, when the driving gear 30 rotates, due to the action force between the positioning member 81 and the positioning groove 73, the driving gear 30 drives the rotating shaft 10 to rotate through the positioning assembly 80, so that the rotating shaft 10 can output rotational force outward.

[0051] The positioning assembly 80 also includes a released state. In the released state, the positioning member 81 and the positioning groove 73 are disengaged so that the driving gear 30 can move axially relative to the rotating shaft 10. At this time, the driving gear 30 will not drive the rotating shaft 10 to rotate, and accordingly, the rotating shaft 10 will not drive the driving gear 30 to rotate, so as to avoid that when the rotating shaft 10 is subjected to a large external torque, the force will be transmitted between the driving gear 30 and other gears, so as to avoid damage due to excessive force between the driving gear 30 and other gears.

[0052] Specifically, when the rotating shaft 10 is subjected to a large external torque, at the moment when the rotating shaft 10 rotates, the positioning groove 73 has a large force on the positioning member 81, and the positioning member 81 can overcome the force of the elastic member 82 and move in the direction away from the positioning groove 73. At this time, the positioning member 81 and the positioning groove 73 are disengaged, and the positioning assembly 80 is switched to the released state. At this time, the rotating shaft 10 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.

[0053] Among them, the positioning component 80 is switched from the positioning state to the released state. When the rotating shaft 10 is subjected to a large torque from the external force, the positioning component 80 is disengaged from at least one of the driving gear 30 and the rotating shaft 10, so that the positioning component 80 is switched to the released state. Alternatively, the driving device 1 also includes a switching structure, and the switching structure can be activated by external control. For example, the switching structure can be controlled by voice, buttons, gestures, etc., and the switching structure drives the positioning component 80 to switch between the positioning state and the released state. Of course, other methods can also be used to control the positioning component 80 to switch between the positioning state and the released state, and no excessive restrictions are made here.

[0054] In some optional embodiments of the present invention, Figure 5 As shown, the positioning groove 73 is formed as an arc surface, and the positioning member 81 and the arc surface of the positioning groove 73 cooperate with each other, which makes it easy to reduce the friction between the positioning member 81 and the positioning groove 73, thereby reducing the wear between the positioning member 81 and the positioning groove 73, and at the same time facilitates the switching of the positioning assembly 80 between the positioning state and the released state.

[0055] Specifically, when the positioning assembly 80 is in the positioning state, the positioning piece 81 is located in the positioning groove 73. When the positioning assembly 80 is in the released state, the positioning piece 81 moves out of the positioning groove 73, so that the positioning groove 73 is formed into an arc-shaped surface. This makes it convenient for the positioning piece 81 to move into or out of the positioning groove 73, thereby facilitating the switching of the positioning assembly 80 between the positioning state and the released state, and at the same time facilitating the reduction of the wear on the positioning piece 81 and the positioning groove 73 when the positioning assembly 80 is switched between the positioning state and the released state.

[0056] In some embodiments, the positioning member 81 is a sphere, and the cooperation between the sphere and the arc surface can simultaneously constrain the degrees of freedom of the driving gear 30 in multiple directions. The spherical curvature of the positioning member 81 and the positioning groove 73 has a certain degree of matching, so that the force between the positioning member 81 and the positioning groove 73 is uniform and stress concentration is not easy to occur, thereby facilitating a significant improvement in the system stiffness.

[0057] Among them, the higher the matching degree of the spherical curvature of the positioning member 81 and the positioning groove 73, the higher the rigidity of the contact point, the smaller the stress, and the less likely it is to deform. The positioning member 81 is a sphere because the spherical shape has high strength, wear resistance, and good impact resistance.

[0058] In other embodiments, the positioning member 81 may also be a cylindrical, conical, spindle-shaped, elliptical, etc., which can be radially rolled and has a certain shape that can impose constraints on the positioning groove 73. The corresponding positioning groove 73 may be a cylindrical surface, a conical surface, a spindle-shaped surface, an elliptical surface, etc., and the effect is the same. When the positioning member 81 is an axially asymmetric shape such as a spindle-shaped, a cone-shaped, etc., its smaller end should be installed at the end that is separated from the positioning groove 73. In short, the assembly direction should be conducive to the separation of the positioning member 81 from the positioning groove 73, so as to facilitate the realization of the clutch function.

[0059] In some optional embodiments of the present invention, Figure 4 As shown, the driving device 1 also includes an adjusting member 72, which cooperates with the elastic member 82 to adjust the elasticity of the elastic member 82, and then adjusts the force between the positioning member 81 and the positioning groove 73. On the one hand, it is used to fine-tune the axial position of the driving gear 30, and on the other hand, it can adjust the critical force between the positioning member 81 and the positioning groove 73 when the positioning assembly 80 switches from the positioning state to the released state.

[0060] In some specific embodiments of the present invention, Figure 4 , Figure 6 As shown, the adjusting member 72 cooperates with the rotating shaft 10 and another thread in the driving gear 30 . By rotating the adjusting member 72 , the compression amount of the elastic member 82 can be adjusted, thereby adjusting the acting force between the positioning member 81 and the positioning groove 73 .

[0061] like Figure 3 , Figure 4 As shown, in this embodiment, the rotating shaft 10 has a mating protrusion 11, and the mating protrusion 11 has a plurality of first mating through holes, and the plurality of first mating through holes are arranged at intervals along the circumference of the mating protrusion 11. The side of the driving gear 30 facing the mating protrusion 11 is a plane, and a plurality of arc surfaces are provided on the plane. An elastic member 82 is provided in each first mating through hole, and a positioning member 81 is provided on the side of the first mating through hole facing the arc surface.

[0062] Among them, when the positioning assembly 80 is in a positioning state, multiple first matching through holes correspond one by one to the arc surface, a part of the positioning member 81 is located in the first matching through hole, and the other part is located in the arc surface. At this time, when the driving gear 30 rotates, the driving gear 30 can drive the positioning member 81 in the arc surface to rotate together and drive the rotating shaft 10 to rotate, so that the rotating shaft 10 can output rotational force outward.

[0063] When the rotating shaft 10 is subjected to a large external torque and rotates, the rotating shaft 10 drives the positioning member 81 to rotate. At this time, the positioning member 81 moves out from the arc surface to the plane, and the positioning member 81 overcomes the force of the elastic member 82 and moves into the first matching through hole. At this time, the positioning assembly 80 switches to the released state, and the positioning member 81 disengages from the arc surface. The rotating shaft 10 will not drive the driving gear 30 to rotate, 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.

[0064] Of course, in addition to applying torque to the rotating shaft 10 to switch the positioning assembly 80 to the released state, other methods may also be used to switch the positioning assembly 80 to the released state, and no further restrictions are imposed herein.

[0065] In some embodiments, Figure 4 As shown, the adjustment member 72 is arranged on the side of the first mating through hole that is away from the arc surface. The adjustment member 72 is threadedly matched with the inner wall of the first mating through hole. When the adjustment member 72 is rotated, the amount of extension of the adjustment member 72 into the first mating through hole can be adjusted, and then the compression amount of the elastic member 82 can be adjusted, thereby changing the force applied by the elastic member 82 to the positioning member 81. On the one hand, the axial position of the driving gear 30 can be limited and the axial position of the driving gear 30 can be fine-tuned. On the other hand, the critical force between the positioning member 81 and the positioning groove 73 can be adjusted when the positioning assembly 80 is switched from the positioning state to the released state.

[0066] In some examples, such as Figure 4As shown, the driving device 1 also includes an elastic stop member 40, which is arranged on the side of the driving gear 30 away from the elastic member 82, wherein the driving gear 30 is clamped between the elastic stop member 40 and the positioning member 81. When the force of the elastic member 82 on the positioning member 81 is reduced, under the action of the elastic stop member 40, the driving gear 30 moves along the axial direction of the rotating shaft 10 toward the mating protrusion 11. When the force of the elastic member 82 on the driving gear 30 increases, the driving gear 30 can overcome the elastic stop member 40 and move along the axial direction of the rotating shaft 10 toward the mating protrusion 11, so as to fine-tune the position of the driving gear 30 along the axial direction of the rotating shaft 10, thereby eliminating the meshing clearance between the driving gear 30 and other gears in the axial direction of the rotating shaft 10.

[0067] like Figure 6 As shown, in this embodiment, the rotating shaft 10 has a mating protrusion 11, and the side of the mating protrusion 11 facing the driving gear 30 is a plane, and a plurality of arcuate surfaces are provided on the plane, and the plurality of arcuate surfaces are arranged at intervals along the circumference of the mating protrusion 11. The driving gear 30 includes a mating portion 31 and a gear portion 32, and the mating portion 31 is located on the side of the gear portion 32 facing the mating protrusion 11, and a plurality of second mating through holes are provided on the mating portion 31, and an elastic member 82 is provided in each second mating through hole, and a positioning member 81 is arranged on the side of the second mating through hole facing the arcuate surface.

[0068] Among them, when the positioning assembly 80 is in the positioning state, multiple first matching through holes correspond one by one to the arc surface, a part of the positioning member 81 is located in the second matching through hole, and the other part is located in the arc surface. At this time, when the driving gear 30 rotates, the driving gear 30 can drive the positioning member 81 in the second matching through hole to rotate together and drive the rotating shaft 10 to rotate, so that the rotating shaft 10 can output rotational force outward.

[0069] When the rotating shaft 10 is subjected to a large external torque and rotates, the rotating shaft 10 drives the arc surface to rotate. At this time, the positioning member 81 moves out from the arc surface to the plane, and the positioning member 81 overcomes the force of the elastic member 82 and moves into the second matching through hole. At this time, the positioning assembly 80 switches to the released state. Since the positioning member 81 is disengaged from the arc surface, the rotating shaft 10 will not drive the driving gear 30 to rotate, 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.

[0070] Of course, in addition to applying torque to the rotating shaft 10 to switch the positioning assembly 80 to the released state, other methods may also be used to switch the positioning assembly 80 to the released state, and no further restrictions are imposed herein.

[0071] In some embodiments, Figure 6 As shown, the adjustment member 72 is arranged on the side of the second mating through hole that is away from the arc surface. The adjustment member 72 is threadedly matched with the inner wall of the second mating through hole. When the adjustment member 72 is rotated, the amount of extension of the adjustment member 72 into the second mating through hole can be adjusted, and then the compression amount of the elastic member 82 can be adjusted, thereby changing the force applied by the elastic member 82 to the positioning member 81. On the one hand, the axial position of the driving gear 30 can be limited and the axial position of the driving gear 30 can be fine-tuned. On the other hand, the critical force between the positioning member 81 and the positioning groove 73 can be adjusted when the positioning assembly 80 is switched from the positioning state to the released state.

[0072] In some examples, such as Figure 6 As shown, the driving device 1 also includes an elastic stop member 40, which is arranged on the side of the driving gear 30 away from the mating protrusion 11, wherein when the force of the elastic member 82 on the positioning member 81 is reduced, the force between the mating protrusion 11 and the positioning member 81 is reduced. At this time, under the action of the elastic stop member 40, the driving gear 30 moves along the axial direction of the rotating shaft 10 toward the mating protrusion 11; when the force of the elastic member 82 on the positioning member 81 is increased, the driving gear 30 can overcome the elastic stop member 40 and move along the axial direction of the rotating shaft 10 toward the direction away from the mating protrusion, so as to fine-tune the axial position of the driving gear 30 along the rotating shaft 10, thereby eliminating the meshing clearance between the driving gear 30 and other gears in the axial direction of the rotating shaft 10.

[0073] In some embodiments of the present invention, Figure 4 As shown, the outer peripheral wall of the rotating shaft 10 is provided with a mating protrusion 11. In the positioning state, the positioning assembly 80 respectively cooperates with the mating protrusion 11 and the driving gear 30. When the driving gear 30 rotates, the driving gear 30 drives the mating protrusion 11 to rotate through the positioning assembly 80, and then drives the rotating shaft 10 to rotate, so that the rotating shaft 10 can output rotational force outward.

[0074] In some optional embodiments of the present invention, Figure 4 , Figure 6 As shown, the driving device 1 also includes an elastic stop member 40, which is arranged on the side of the driving gear 30 away from the mating protrusion 11. The elastic stop member 40 cooperates with the driving gear 30 to apply a force to the driving gear 30. The force makes the driving gear 30 have a tendency to move toward the mating protrusion 11 so that the positioning assembly 80 maintains a positioning state, so that the positioning assembly 80 keeps mating with the driving gear 30 and the mating protrusion 11, and then when the driving gear 30 rotates, it can smoothly drive the rotating shaft 10 to rotate, so that the rotating shaft 10 can output rotational force outward.

[0075] In addition, the elastic stop member 40 is used to realize the automatic switching of the positioning assembly 80 from the released state to the positioned state. Specifically, when the rotating shaft 10 is subjected to a large external torque causing the positioning assembly to switch from the positioned state to the released state, when the external force disappears, under the action of the elastic stop member 40, the driving gear 30 moves toward the direction close to the mating protrusion 11, so that the positioning groove 73 and the positioning member 81 approach each other and re-mate, thereby switching the positioning assembly 80 to the positioned state.

[0076] Of course, when the driving device 1 is displaced or vibrates, causing the driving gear 30 to be displaced, when the external force disappears, the driving gear 30 can be driven to automatically reset under the action of the elastic stop member 40 to eliminate the matching clearance between the driving gear 30 and other gears.

[0077] In some embodiments, the positioning assembly 80 includes a plurality of positioning members 81, and one of the mating protrusion 11 and the driving gear 30 is provided with a plurality of positioning grooves 73, the plurality of positioning grooves 73 are evenly spaced along the circumference of the rotating shaft 10, and the plurality of positioning members 81 are spaced along the circumference of the rotating shaft 10 on the other of the mating protrusion 11 and the driving gear 30.

[0078] Among them, when the positioning assembly 80 switches from the released state to the positioned state, the positioning member 81 needs to be moved back into the mating groove 73. At this time, the rotation angle of the positioning member 81 relative to the mating groove 73 is related to the distribution density of the mating groove 73. The distribution density of the mating groove 73 can be determined according to the sensitivity of the relative position of the output shaft 10 and the driving gear 30.

[0079] In some specific embodiments of the present invention, Figure 4 , Figure 6 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 driving gear 30 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 exert a force on the driving gear 30, so that the driving gear 30 has a tendency to move toward the mating protrusion 11 so that the positioning assembly 80 maintains a positioning state, so that the positioning assembly 80 keeps mating with the driving gear 30 and the mating protrusion 11, and then when the driving gear 30 rotates, it can smoothly drive the rotating shaft 10 to rotate, so that the rotating shaft 10 can output rotational force outward.

[0080] In some embodiments, 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 .

[0081] The elastic stop member 40 is formed as a spring, and the position of the spring is limited by a retaining spring 50. When the driving device 1 vibrates, the spring can absorb part of the vibration to achieve a buffering and shock-absorbing effect.

[0082] 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 driving gear 30, 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 applies a force to the driving gear 30, so that the driving gear 30 has a tendency to move toward the mating protrusion 11 so that the positioning assembly 80 maintains a positioning state.

[0083] In some examples, such as Figure 3 , Figure 6 As shown, a slot 12 is provided on the rotating shaft 10 , and a plurality of snap-fit ​​springs 51 are provided at intervals on the snap spring 50 . The plurality of snap-fit ​​springs 51 are snap-fitted and fixed in the slot 12 to fix the snap spring 50 on the rotating shaft 10 .

[0084] 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 .

[0085] In some embodiments of the present invention, Figure 3 As shown, a gasket 71 is provided between the driving gear 30 and the elastic stop member 40. The gasket 71 is used to separate the contact between the driving gear 30 and the elastic stop member 40, thereby reducing the wear on the driving gear 30 and the elastic stop member 40. When the driving gear 30 and the elastic stop member 40 rotate relative to each other, if the ends of the driving gear 30 and the elastic stop member 40 are in direct contact, mutual wear will occur between the driving gear 30 and the elastic stop member 40. Providing the gasket 71 between the driving gear 30 and the elastic stop member 40 can reduce the wear on the driving gear 30 and the elastic stop member 40.

[0086] Specifically, when the output end of the rotating shaft 10 is subjected to a large external torque and the positioning assembly 80 is switched to the released state, when the rotating shaft 10 rotates, the rotating shaft 10 will drive the elastic stop member 40 and the fixed part to rotate but will not drive the driving gear 30 to rotate. Relative rotation occurs between the driving gear 30 and the elastic stop member 40. By providing a gasket 71 between the driving gear 30 and the elastic stop member 40, the wear on the driving gear 30 and the elastic stop member 40 can be reduced.

[0087] In some embodiments of the present invention, Figure 2 , Figure 7As 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 rotating shaft 10 to rotate through the positioning assembly 80 when rotating.

[0088] In some optional embodiments of the present invention, Figure 7 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 to drive the driving gear 30 to rotate.

[0089] Among them, 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 rotating shaft 10 to rotate through the positioning assembly 80 when rotating.

[0090] 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.

[0091] In some specific embodiments of the present invention, Figure 7 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 drives the rotating shaft 10 to rotate through the positioning assembly 80.

[0092] 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.

[0093] 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.

[0094] In some embodiments of the utility model, the driving device 1 also includes a shell 65, and the driving gear 30 is disposed in the shell 65 to protect the driving gear 30. The rotating shaft 10 is disposed in the shell 65 and a portion extends out of the shell 65 so that the rotating shaft 10 can output rotational force outward.

[0095] In some embodiments, Figure 2 As shown, 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 driving gear 30 and a part 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 driving gear 30 and the rotating shaft 10 to prevent large particles of dust or foreign matter from entering the driving device 11.

[0096] The housing 65 is used to limit the positions of the first worm 621 , the first worm wheel 622 , the second worm 641 , the second worm wheel 642 and the driving gear 63 , so as to reduce assembly errors and clearances between gears, thereby improving transmission stability.

[0097] In some specific embodiments of the present invention, a portion of the rotating shaft 10 extending out of the shell 65 is used to install multimedia components 91 such as a display screen, a camera, an audio system or a microphone, so as to drive the multimedia components 91 such as the display screen, a camera, an audio system or a microphone to rotate. When the multimedia components 91 such as the display screen, a camera, an audio system or a microphone are subjected to a large external torque and drive the rotating shaft 10 to rotate, the positioning assembly 80 switches to a released state. At this time, the torque at the rotating shaft 10 will not be transmitted to the driving gear 30, thereby preventing the torque at the rotating shaft 10 from being transmitted to the gear set and the motor 61, thereby preventing damage to the driving gear 30, the gear set and the motor 61.

[0098] Among them, the driving device 1 can drive the multimedia components 91 such as the display screen, camera, audio or microphone to rotate in the clockwise direction, and can also drive the multimedia components 91 such as the display screen, camera, audio or microphone to rotate in the counterclockwise direction. This can be achieved by simply changing the rotation direction of the output shaft 611 of the motor 61.

[0099] The following describes a multimedia device 9 according to an embodiment of the present utility model. Figure 8 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] The vehicle according to the embodiment of the utility model, by utilizing the multimedia device 9 according to the above embodiment of the utility model, is provided with the multimedia device 9 on the vehicle, so as to improve the interactivity of the vehicle and improve the user experience.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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 driving gear (30), wherein the driving gear (30) is externally mounted on the rotating shaft (10); A positioning assembly (80), wherein the positioning assembly (80) has a positioning state, in which the positioning assembly (80) is configured to cooperate with the driving gear (30) and the rotating shaft (10) respectively to position and adjust the axial position of the driving gear (30).

2. The drive device (1) according to claim 1, characterized in that One of the rotating shaft (10) and the driving gear (30) is provided with a positioning groove (73); The positioning assembly (80) comprises a positioning member (81) and an elastic member (82), wherein the elastic member (82) is arranged on the other of the rotating shaft (10) and the driving gear (30), and the elastic member (82) is connected to the positioning member (81) to apply a force to the positioning member (81) to cooperate with the positioning groove (73).

3. The drive device (1) according to claim 2, characterized in that In the positioning state, the positioning member (81) cooperates with the positioning groove (73), and the positioning assembly (80) also has a release state, in which the positioning member (81) is disengaged from the positioning groove (73) so that the driving gear (30) can move axially relative to the rotating shaft (10).

4. The drive device (1) according to claim 2, characterized in that The positioning groove (73) is formed as an arc surface, and the positioning piece (81) and the positioning groove (73) are matched with each other in the arc surface.

5. The drive device (1) according to claim 2, characterized in that: It also includes an adjusting member (72), wherein the adjusting member (72) cooperates with the elastic member (82) to adjust the elasticity of the elastic member (82).

6. The drive device (1) according to claim 5, characterized in that The adjusting member (72) is threadably matched with the other of the rotating shaft (10) and the driving gear (30).

7. The drive device (1) according to claim 1, characterized in that The outer peripheral wall of the rotating shaft (10) is provided with a matching protrusion (11), and in the positioning state, the positioning assembly (80) is respectively matched with the matching protrusion (11) and the driving gear (30).

8. The drive device (1) according to claim 7, characterized in that The invention also includes an elastic stop member (40), wherein the elastic stop member (40) is arranged on a side of the driving gear (30) away from the mating protrusion (11), and the elastic stop member (40) cooperates with the driving gear (30) to apply a force to the driving gear (30), wherein the force causes the driving gear (30) to have a tendency to move toward the mating protrusion (11) so that the positioning assembly (80) maintains the positioning state.

9. The drive device (1) according to claim 8, 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 driving gear (30) and the fixing portion.

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

11. The drive device (1) according to claim 10, 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 springs (51) at intervals, and the plurality of clamping springs (51) are clamped and fixed in the clamping slot (12).

12. The driving device (1) according to any one of claims 1 to 11, further comprising: 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.

13. The drive device (1) according to claim 12, 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.

14. The drive device (1) according to claim 13, 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).

15. The drive device (1) according to claim 1, characterized in that The driving device (1) further comprises a housing (65), the driving gear (30) 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).

16. 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 15, wherein the driving device (1) is used for driving the multimedia piece (91) to rotate.

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

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

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