Driving device capable of rotating vehicle-mounted screen

Abstract

The utility model relates to a driving device capable of rotating a vehicle-mounted screen, which comprises a shell, a motor, a transmission assembly and an output main shaft, the motor is connected with the output main shaft through the transmission assembly, the output main shaft is used for being connected with the vehicle-mounted screen, and the transmission assembly comprises a worm in transmission connection with the motor. The connecting piece is arranged on the output shaft of the motor to be connected with the worm for transmission, an existing structure that the output shaft is directly connected with the worm for transmission is replaced, and due to the arrangement of the connecting piece, impact force transmitted to the motor due to axial movement of the worm can be weakened. Noise generated by impact caused by movement of the motor is reduced, and the noise reduction effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted screens, in particular to a driving device capable of rotating a vehicle-mounted screen. Background Art

[0002] With the development of social life and the continuous evolution of consumer demand, people have also put forward higher requirements for the on-board functions of automobiles. More and more cars are equipped with large central control screens. Most of the on-board screens at the beginning were fixed structures for drivers to observe driving data. However, with the continuous intelligence of on-board functions of automobiles, fixed structures can no longer meet user needs, so there is a rotating mechanism for rotatable on-board screens. The rotating mechanism was a manual structure at first, and the manual structure was gradually replaced by an electric structure. The electric structure mainly drives the on-board screen to rotate and adjust the angle through the work of the motor, so that users can have a good viewing angle, which is more convenient to use and does not require manual adjustment, thereby improving the sense of quality and high-end. However, since the electric structure is driven by a motor and transmits power through structures such as worm gears, it will produce certain noise during use, especially the worm will produce axial movement, causing the motor to produce axial impact and generate loud noise, as well as the noise generated by the motor itself, which will bring a poor experience to users. Therefore, how to solve the above noise problem is a problem that needs to be solved urgently. Utility Model Content

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a driving device capable of rotating a vehicle-mounted screen with low noise.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a driving device capable of rotating a vehicle-mounted screen, comprising a housing, a motor, a transmission assembly and an output spindle, wherein the motor is connected to the output spindle via the transmission assembly, and the output spindle is used to connect the vehicle-mounted screen, and the transmission assembly comprises a worm gear connected to the motor, and the output shaft of the motor is connected to the worm gear via a connecting piece.

[0005] Furthermore, the connecting member is provided with a first axial hole connected to the output shaft and a second axial hole connected to the worm, the first axial hole and the second axial hole are coaxially arranged, a first flat position is provided in the first axial hole, and a second flat position is provided in the second axial hole.

[0006] Furthermore, the transmission assembly also includes a primary worm wheel meshing with the worm, a secondary gear meshing with the primary worm wheel, a third gear meshing with the second gear, and a fourth gear meshing with the third gear, and the fourth gear is locked on the output spindle.

[0007] Further, a first mounting position for mounting a first-stage worm gear, a second mounting position for mounting a second-stage gear, a third mounting position for mounting a third-stage gear, and a fourth mounting position for mounting an output main shaft are provided inside the housing.

[0008] Further, a worm mounting position for mounting a worm is provided inside the housing. Both ends of the worm are connected with bearings, and bearing supporting positions for mounting the bearings are provided at both ends of the worm mounting position.

[0009] Further, axial blocking surfaces for blocking axial displacement of the bearings are provided on the bearing supporting positions, and the two axial blocking surfaces face each other.

[0010] Further, a motor mounting position is provided inside the housing. A shock-absorbing sleeve is sleeved outside the motor, and a first limiting housing and a second limiting housing are connected to both ends of the shock-absorbing sleeve.

[0011] Further, a through hole for avoiding a connecting member is provided at the center of the first limiting housing.

[0012] Further, a first blocking portion for axially blocking the first limiting housing and a second blocking portion for axially blocking the second limiting housing are provided inside the motor mounting position.

[0013] Further, the housing includes a detachable base and an upper cover.

[0014] Compared with the prior art, the advantages of the present utility model are as follows: By arranging a connecting member on the output shaft of the motor to connect the worm drive, instead of the existing structure of directly connecting the output shaft to the worm drive, the arrangement of the connecting member can weaken the impact force transmitted from the axial displacement of the worm to the motor, reduce the noise generated by the impact of the motor due to the displacement, and achieve the effect of noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0016] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions that the present utility model can be implemented. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 is a sectional view of the present utility model with the upper cover omitted;

[0019] Figure 3 is an exploded view of the present utility model;

[0020] Figure 4 is a connection schematic diagram of the motor and the transmission component of the present utility model;

[0021] Figure 5 is a structural schematic diagram of the connecting piece of the present utility model;

[0022] Figure 6 is a structural schematic diagram of the connecting piece from another perspective of the present utility model;

[0023] As shown in the figure, 1 is the housing, 1.1 is the first installation position, 1.2 is the second installation position, 1.3 is the third installation position, 1.4 is the fourth installation position, 1.5 is the worm installation position, 1.6 is the supporting connection position, 1.7 is the axial blocking surface, 1.8 is the motor installation position, 1.9 is the first blocking part, 1.10 is the second blocking part, 1.11 is the base, 1.12 is the upper cover, 2 is the motor, 2.1 is the output shaft, 3 is the transmission component, 3.1 is the worm, 3.2 is the first-stage worm gear, 3.3 is the second-stage gear, 3.4 is the third-stage gear, 3.5 is the fourth-stage gear, 4 is the output main shaft, 5 is the connecting piece, 5.1 is the first shaft hole, 5.2 is the second shaft hole, 5.3 is the first flat position, 5.4 is the second flat position, 6 is the bearing, 7 is the shock-absorbing sleeve, 8 is the first limiting shell, 8.1 is the through hole, and 9 is the second limiting shell. Specific embodiments

[0024] The present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. 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 should not be construed as a limitation to the present utility model.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] As Figure 1-6 shown, the present utility model provides a driving device capable of rotating a vehicle-mounted screen, including a housing 1, a motor 2, a transmission assembly 3 and an output main shaft 4. The motor 2 is connected to the output main shaft 4 through the transmission assembly 3. The output main shaft 4 is used to connect to the vehicle-mounted screen. The transmission assembly 3 includes a worm 3.1 that is in transmission connection with the motor 2, and the output shaft 2.1 of the motor 2 is in transmission connection with the worm 3.1 through a connecting member 5.

[0030] In the present utility model, by providing a connecting member 5 on the output shaft 2.1 of the motor 2 to connect and drive the worm 3.1, replacing the existing structure of directly connecting the output shaft to the worm for transmission, the setting of this connecting member 5 can weaken the impact force transmitted from the axial movement of the worm 3.1 to the motor 2, reduce the noise generated by the impact of the motor 2 due to the movement, and achieve the effect of noise reduction.

[0031] Among them, referring to Figure 5 、 6, a first shaft hole 5.1 connected to the output shaft 2.1 and a second shaft hole 5.2 connected to the worm 3.1 are provided on the connecting member 5. The first shaft hole 5.1 and the second shaft hole 5.2 are coaxially arranged. A first flat position 5.3 is provided in the first shaft hole 5.1, and a second flat position 5.4 is provided in the second shaft hole 5.2. The settings of the first flat position 5.3 and the second flat position 5.4 can prevent the output shaft 2.1 and the worm 3.1 from slipping during transmission, realizing stable transmission.

[0032] Among them, referring to Figure 2 , 3 , 4, the transmission assembly 3 further includes a first-stage worm gear 3.2 meshed with the worm 3.1, a second-stage gear 3.3 meshed with the first-stage worm gear 3.2, a third-stage gear 3.4 meshed with the second-stage gear 3.3, and a fourth-stage gear 3.5 meshed with the third-stage gear 3.4. The fourth-stage gear 3.5 is sleeved on the output main shaft 4. The motor 2 works to drive the worm 3.1 through the connecting member 5. The worm 3.1 sequentially drives the first-stage worm gear 3.2, the second-stage gear 3.3, the third-stage gear 3.4, and the fourth-stage gear 3.5. The fourth-stage gear 3.5 drives the output main shaft 4 to rotate, thereby realizing the electric rotation of the vehicle-mounted screen and automatically adjusting the rotation angle to facilitate the user to have a good viewing angle. A first installation position 1.1 for installing the first-stage worm gear 3.2, a second installation position 1.2 for installing the second-stage gear 3.3, a third installation position 1.3 for installing the third-stage gear 3.4, and a fourth installation position 1.4 for installing the output main shaft 4 are provided in the housing 1. The structure is compact and the installation space is effectively utilized.

[0033] Among them, referring to Figure 3 , a worm installation position 1.5 for installing the worm 3.1 is provided in the housing 1. Both ends of the worm 3.1 are connected with bearings 6. Bearing seats 1.6 for installing the bearings 6 are provided at both ends of the worm installation position 1.5. The bearings 6 can play an auxiliary role to make the rotation of the worm 3.1 more stable and smoother.

[0034] Among them, axial blocking surfaces 1.7 for blocking the axial movement of the bearings 6 are provided on the bearing seats 1.6. The two axial blocking surfaces 1.7 face each other. The setting of the axial blocking surfaces 1.7 can limit the movement of the bearings 6, thereby limiting the axial movement of the worm 3.1, further reducing the impact force transmitted to the motor 2 due to the axial movement of the worm 3.1 and reducing noise. In addition, the smaller the gap between the bearings 6 and the axial blocking surfaces 1.7 on the bearing seats 1.6, the smaller the movement space and the smaller the impact noise.

[0035] Among them, referring to Figure 2 , 3, a motor mounting position 1.8 is provided inside the outer shell 1. A shock-absorbing sleeve 7 is sleeved outside the motor 2. The two ends of the shock-absorbing sleeve 7 are connected with a first limiting shell 8 and a second limiting shell 9. The setting of the shock-absorbing sleeve 7 can play a role in shock absorption and noise reduction, and can filter the vibration generated by the motor 2 itself. The first limiting shell 8 and the second limiting shell 9 at both ends of the shock-absorbing sleeve 7 can play an axial limiting role on the motor 2, further restricting the axial movement of the motor 2, reducing the impact sound and lowering the noise. In addition, the first limiting shell 8 and the second limiting shell 9 are connected to both ends of the shock-absorbing sleeve 7 and do not directly contact the motor 2. The vibration of the motor 2 can be filtered through the shock-absorbing sleeve 7, and then the axial limiting of the motor 2 can be realized further, which can better reduce the noise generated by vibration and impact.

[0036] Among them, referring to Figure 3 , a through hole 8.1 for avoiding the connecting piece 5 is provided at the center of the first limiting shell 8.

[0037] Among them, referring to Figure 2 , 3 , a first blocking part 1.9 for axially blocking the first limiting shell 8 and a second blocking part 1.10 for axially blocking the second limiting shell 9 are provided inside the motor mounting position 1.8, which can better limit the axial movement of the motor 2 and reduce the impact sound. In addition, the smaller the contact gap between the first limiting shell 8, the second limiting shell 9 and the first blocking part 1.9, the second blocking part 1.10, the smaller the moving space and the smaller the impact noise.

[0038] Among them, referring to Figure 3 , the outer shell 1 includes a detachable base 1.11 and an upper cover 1.12. The base 1.11 and the upper cover 1.12 are fixedly connected by screws, which is convenient for disassembly and assembly.

[0039] In use, the vehicle-mounted screen is fixed on the output main shaft 4. The motor 2 is started to work. The output shaft 2.1 of the motor 2 drives the worm 3.1 to rotate through the connecting member 5. The worm 3.1 sequentially drives the first-stage worm gear 3.2, the second-stage gear 3.3, the third-stage gear 3.4, and the fourth-stage gear 3.5 in series. The fourth-stage gear 3.5 drives the output main shaft 4 to rotate coaxially, so as to realize the electric rotation of the vehicle-mounted screen. Since axial movement of the worm 3.1 will occur during the transmission between the worm 3.1 and the first-stage worm gear 3.2, and the axial movement of the worm 3.1 will be transmitted back to the motor 2 in the reverse direction, causing the motor 2 to generate an axial impact and emit noise. The setting of the connecting member 5 can weaken the impact force transmitted from the axial movement of the worm 3.1 to the motor 2, reduce the noise generated by the impact of the motor 2 due to the axial movement, and achieve the effect of noise reduction. Moreover, both ends of the worm 3.1 are connected to the bearing 6, and the bearing 6 restricts the axial movement through the axial abutting surface 1.7, thereby restricting the axial movement of the worm 3.1 and further weakening the impact force transmitted from the axial movement of the worm 3.1 to the motor 2 and reducing the noise. In addition, a shock-absorbing sleeve 7 is sleeved outside the motor 2. The setting of the shock-absorbing sleeve 7 can play a role in shock absorption and noise reduction, and can filter the vibration generated by the motor 2 itself. The first limiting shell 8 and the second limiting shell 9 at both ends of the shock-absorbing sleeve 7 can also play an axial limiting role on the motor 2, further restricting the axial movement of the motor 2, reducing the impact sound, and reducing the noise, so as to ensure that users have a better experience when electrically adjusting the rotation angle of the vehicle-mounted screen, and improve the quality and sense of luxury.

[0040] The materials, reagents and experimental equipment involved in the embodiments of the present utility model are all commercially available products that conform to the field of vehicle-mounted screens unless otherwise specified.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A driving device capable of rotating a vehicle-mounted screen, characterized in that: It includes a housing, a motor, a transmission assembly and an output spindle, wherein the motor is connected to the output spindle through the transmission assembly, and the output spindle is used to connect to a vehicle-mounted screen, the transmission assembly includes a worm gear transmission connected to the motor, the output shaft of the motor is transmission connected to the worm gear through a connecting piece, the transmission assembly also includes a primary worm wheel meshing with the worm, a secondary gear meshing with the primary worm wheel, a third gear meshing with the secondary gear, and a fourth gear meshing with the third gear, and the fourth gear is locked on the output spindle.

2. A driving device capable of rotating a vehicle-mounted screen according to claim 1, characterized in that: The connecting member is provided with a first axial hole connected to the output shaft and a second axial hole connected to the worm, the first axial hole and the second axial hole are coaxially arranged, a first flat position is arranged in the first axial hole, and a second flat position is arranged in the second axial hole.

3. The driving device capable of rotating a vehicle-mounted screen according to claim 1, characterized in that: The housing is provided with a first mounting position for mounting a first-stage worm gear, a second mounting position for mounting a second-stage gear, a third mounting position for mounting a third-stage gear and a fourth mounting position for mounting an output main shaft.

4. The driving device capable of rotating a vehicle-mounted screen according to claim 1, characterized in that: A worm mounting position for mounting the worm is arranged in the shell, both ends of the worm are connected with bearings, and both ends of the worm mounting position are provided with supporting positions for mounting the bearings.

5. The driving device capable of rotating a vehicle-mounted screen according to claim 4, characterized in that: The supporting positions are each provided with an axial stop surface for preventing the axial movement of the bearing, and the two axial stop surfaces are arranged facing each other.

6. The driving device capable of rotating a vehicle-mounted screen according to claim 1, characterized in that: A motor installation position is arranged inside the shell, a shock absorbing sleeve is arranged outside the motor, and two ends of the shock absorbing sleeve are connected to a first limiting shell and a second limiting shell.

7. The driving device capable of rotating a vehicle-mounted screen according to claim 6, characterized in that: A through hole for avoiding the connecting member is provided at the center of the first limiting shell.

8. The driving device capable of rotating a vehicle-mounted screen according to claim 6, characterized in that: The motor installation position is provided with a first blocking portion for axially blocking the first limiting shell and a second blocking portion for axially blocking the second limiting shell.

9. The driving device capable of rotating a vehicle-mounted screen according to claim 1, characterized in that: The shell comprises a detachable base and an upper cover.

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