Fixed shaft rotation adjusting mechanism
By designing a fixed-axis rotation adjustment mechanism, using damping devices and motor drives, the problems of small rotation angle and high complexity of the existing automobile screen rotation mechanism are solved, and the arbitrary swing angle of the automobile screen is realized, which improves passenger comfort and Application prospects.
Patent Information
- Application Number
- CN202310838106.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-10
- Publication Date
- 2025-01-10
AI Technical Summary
The existing car screen rotation mechanism has problems such as small rotation angle, large number of parts, high mechanism complexity and large volume, and cannot achieve arbitrary rotation, affecting the comfort of passengers.
A fixed-axis rotation adjustment mechanism is designed, including a rotating shaft, a housing, a damping device and a motor. The friction resistance is provided through the damping device, which limits the rotation shaft movement, and uses the motor to drive the rotating shaft to rotate about the fixed axis, simplifying the mechanism structure. , reduces the number of parts and achieves arbitrary swing angle.
It realizes any swing angle rotation of the car screen, simplifies the mechanism structure, reduces complexity and volume, improves the viewing experience of passengers, and has broad application prospects.
Smart Images
Figure CN119283779A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to automobile screen rotation, and more particularly to a fixed-axis rotation adjustment mechanism. Background Art
[0002] The known rotating mechanism is used to realize the rotation adjustment of the car screen. In the prior art, the screen of the central control screen in the car is usually unable to rotate. The known rotating screen has a small rotation angle, and there are problems such as a large number of parts, high complexity of the mechanism, and large size. Summary of the invention
[0003] In order to solve the problems in the prior art that the rotating screen cannot rotate arbitrarily and the mechanism is complicated, the present invention provides a fixed-axis rotation adjustment mechanism.
[0004] According to the fixed-axis rotation adjustment mechanism of the present invention, it includes a rotating shaft, a shell, a damping device and a motor, wherein the damping device is arranged in the axial direction between the rotating shaft and the shell, the shell for supporting the rotating shaft is fixedly connected to the outer shell of the motor, the output shaft of the motor is connected to the rotating shaft to drive the rotating shaft to rotate around the fixed axis through the torque output of the motor, the rotating shaft has a rotating shaft damping mating surface, the shell has a shell inner hole, and the damping device provides friction resistance between the shell inner hole and the rotating shaft damping mating surface to provide the damping required in the circumferential direction when the rotating shaft rotates in the shell, while limiting the axial movement of the rotating shaft.
[0005] Preferably, the damping device is a damping ring.
[0006] Preferably, the fixed-axis rotation adjustment mechanism further comprises a cover plate, and the rotating shaft is riveted to the cover plate; the rotating shaft has a rotating shaft riveted surface, and the lower end surface of the cover plate and the rotating shaft riveted surface achieve zero contact.
[0007] Preferably, the rotating shaft comprises a rotating shaft riveting head extending from the rotating shaft riveting surface, the rotating shaft riveting head is formed by riveting and deforming the front rivet head, and the front rivet head is anti-rotationally matched with the riveting hole of the cover plate.
[0008] Preferably, the fixed-axis rotation adjustment mechanism further comprises a bushing sleeved on the rotating shaft, which is used for lubricating and supporting the rotating shaft to rotate on the housing.
[0009] Preferably, the bushing includes an integrally formed bushing body and a bushing flange; the rotating shaft has an outer cylindrical surface of the rotating shaft, the shell has a shell bushing hole, and the two sides of the bushing body respectively fit the shell bushing hole and the outer cylindrical surface of the rotating shaft in the assembled state; the rotating shaft has a rotating shaft step surface, the shell has a shell upper step surface, and the two sides of the bushing flange respectively fit the rotating shaft step surface and the shell upper step surface in the assembled state.
[0010] Preferably, the fixed-axis rotation adjustment mechanism further includes a clamping device for limiting the axial movement of the rotating shaft.
[0011] Preferably, the rotating shaft has a rotating shaft limiting groove, the shell has a shell lower end surface, and the clamping device is located between the shell lower end surface and the rotating shaft limiting groove.
[0012] Preferably, a plurality of annular grooves are formed on the damping mating surface of the rotating shaft, which are used to store grease when the rotating shaft rotates relative to the housing, thereby reducing the friction between the rotating shaft and the housing.
[0013] Preferably, the output shaft of the motor is spline-matched with the rotating shaft, and the rotating shaft is fixedly connected to the screen.
[0014] The fixed-axis rotation adjustment mechanism according to the present invention has a small number of parts and a small mechanism complexity, and can realize rotation around a fixed axis (such as a vertical Z axis) with an arbitrary swing angle, thereby achieving a more comfortable viewing experience for vehicle passengers and having broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is an overall effect diagram of the fixed-axis rotation adjustment mechanism according to the present invention.
[0016] Figure 2 yes Figure 1 An exploded view of a fixed-axis rotation adjustment mechanism according to a preferred embodiment of the present invention.
[0017] Figure 3 yes Figure 2 Partial assembly cross-sectional view of the fixed-axis rotation adjustment mechanism.
[0018] Figure 4 yes Figure 2 Schematic diagram of the structure of the rotating shaft of the fixed-axis rotation adjustment mechanism.
[0019] Figure 5 yes Figure 2 A first structural schematic diagram of a housing of a fixed-axis rotation adjustment mechanism.
[0020] Figure 6 yes Figure 2 A second structural schematic diagram of the housing of the fixed-axis rotation adjustment mechanism.
[0021] Figure 7 yes Figure 2 Schematic diagram of the structure of the bushing of the fixed-axis rotation adjustment mechanism.
[0022] Figure 8 yes Figure 2 A schematic structural diagram of the clamping device of the fixed-axis rotation adjustment mechanism.
[0023] Fig. 9 yes Figure 1 An exploded view of a fixed-axis rotation adjustment mechanism according to another preferred embodiment of the present invention.
[0024] Fig.10 yes Fig. 9 Partial assembly cross-sectional view of the fixed-axis rotation adjustment mechanism.
[0025] Fig.11 yes Fig. 9 Schematic diagram of the structure of the rotating shaft of the fixed-axis rotation adjustment mechanism.
[0026] Fig.12 yes Fig. 9 A first structural schematic diagram of a housing of a fixed-axis rotation adjustment mechanism.
[0027] Fig.13 yes Fig. 9 A second structural schematic diagram of the housing of the fixed-axis rotation adjustment mechanism.
[0028] Fig.14 yes Fig. 9 Schematic diagram of the structure of the upper bushing of the fixed-axis rotation adjustment mechanism.
[0029] Fig.15 yes Fig. 9 Schematic diagram of the structure of the lower bushing of the fixed-axis rotation adjustment mechanism. DETAILED DESCRIPTION
[0030] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings and described in detail.
[0031] like Figure 1 As shown, the fixed axis rotation adjustment mechanism A according to the present invention is used to rotationally adjust the screen 7. In this embodiment, the vertical Z direction perpendicular to the horizontal plane XY defines a fixed axis, and the screen 7 rotates around the fixed axis. In other embodiments, the fixed axis can also form other angles with the horizontal plane XY.
[0032] Example 1
[0033] like Figure 2 and Figure 3 As shown, according to a preferred embodiment of the present invention, the fixed-axis rotation adjustment mechanism A is an integrated rotating screen, including a rotating shaft 1, a housing 2 and a motor 6, wherein the rotating shaft 1 and the screen 7 (see Figure 1 ) is fixedly connected, the housing 2 is used to support the rotating shaft 1 and is fixedly connected to the housing of the motor 6, the output shaft 61 of the motor 6 is splined with the rotating shaft 1, and the rotating shaft 1 can directly drive the screen 7 to rotate through the torque output of the motor 6. It should be understood that the spline fit here is only an example and not a limitation, and the output shaft 61 of the motor 6 can be directly engaged with the rotating shaft 1 in any other form. In this way, through the high-precision Hall motor, the output shaft 61 directly drives the screen 7 to rotate bidirectionally around the Z axis, eliminating the encoder or potentiometer at the end of the gear box of the traditional mechanism for feedback calibration. While ensuring accuracy, the structure is simple, the dimensional chain control links are few, and the mechanism reliability is high.
[0034] like Figure 4 As shown, the rotating shaft 1 is a stepped column structure, and its outer peripheral surface includes a rotating shaft step surface 1.1, a rotating shaft outer cylindrical surface 1.2, a rotating shaft damping matching surface 1.3 and a rotating shaft limiting groove 1.4. In addition, the bottom of the rotating shaft 1 has a rotating shaft mounting hole 1.5, and the output shaft 61 of the motor 6 (see Figure 2 ) is inserted into the rotating shaft mounting hole 1.5 for installation.
[0035] Back to Figure 2 The housing 2 is a variable diameter cylindrical structure, and the lugs extending from the outer peripheral surface thereof are fixedly mounted on the housing of the motor 6 by bolts, for example. Figure 5 As shown, the upper portion of the housing 2 has a housing upper step surface 2.1 and a housing bushing hole 2.2. Figure 6 As shown, the housing 2 further comprises a housing inner hole 2.3 and a housing lower end surface 2.4.
[0036] Back to Figure 2 The fixed axis rotation adjustment mechanism A also includes a bushing 3 which is sleeved on the rotating shaft 1 and is used to lubricate and support the rotating shaft 1 to rotate above the housing 2. Figure 7 As shown, the cross section of the bushing 3 is L-shaped, and includes a bushing body 3.1 and a bushing flange 3.2. Figure 3 In the assembled state, one side of the bushing flange 3.2 is in contact with the step surface 1.1 of the rotating shaft, and the other side is in contact with the upper step surface 2.1 of the shell; one side of the bushing body 3.1 is in contact with the bushing hole 2.2 of the shell, and the other side is in contact with the outer cylindrical surface 1.2 of the rotating shaft; in this way, the bushing 3 is sandwiched between the rotating shaft 1 and the shell 2, playing the role of supporting the rotating shaft 1 to rotate smoothly.
[0037] Back to Figure 2 The fixed axis rotation adjustment mechanism A also includes a clamping device 4, which is used to limit the axial movement of the rotating shaft 1. Figure 8 As shown, the clamping device 4 is a fractured ring having an inner ring 4.1 and an end face 4.2. Figure 3 In the assembled state, the clamping device 4 is located between the lower end surface 2.4 of the housing and the rotating shaft limiting groove 1.4, its inner ring 4.1 is placed in the rotating shaft limiting groove 1.4, and its end surface 4.2 is in contact with the lower end surface 2.4 of the housing.
[0038] Back to Figure 2 The fixed-axis rotation adjustment mechanism A further comprises a damping device 5 arranged in the axial direction between the rotating shaft 1 and the housing 2, which is used to provide the damping required in the circumferential direction when the rotating shaft 1 rotates in the housing 2. Figure 3In the assembled state, the damping device 5 is a damping ring, which is located between the inner hole 2.3 of the housing and the damping mating surface 1.3 of the rotating shaft to provide a certain friction resistance. In this way, the embedded damping device 5 can ensure that the screen 7 has a certain preload force during the swinging process, prevent the screen 7 from shaking, improve the stability of the mechanism, and limit the axial movement of the rotating shaft 1. In addition, the simplified damping device 5 can make the screen 7 have excellent modal capabilities.
[0039] The specific assembly process of the fixed-axis rotation adjustment mechanism A includes: the bushing 3 is placed in the bushing hole 2.2 of the housing, the damping device 5 is sleeved on the rotating shaft damping mating surface 1.3, the rotating shaft 1 equipped with the damping device 5 is pressed into the housing inner hole 2.3 from top to bottom as a whole, the clamping device 4 is installed in the rotating shaft limit groove 1.4 of the rotating shaft 1, the output shaft 61 of the motor 6 is sleeved into the rotating shaft mounting hole 1.5, the housing of the motor 6 and the housing 2 are fixedly connected, and the screen 7 is connected to the rotating shaft mounting hole 1.6 (see Figure 2 )Firm connection.
[0040] Example 2
[0041] like Fig. 9 and Fig.10 As shown, according to another preferred embodiment of the present invention, the fixed-axis rotation adjustment mechanism A is a riveted rotating screen, including a cover plate 11, a rotating shaft 10, a housing 20 and a motor 60, wherein the cover plate 11 and the screen 7 (see Figure 1 ), the rotating shaft 10 is connected to the cover plate 11 by riveting, the housing 20 is used to support the cover plate 11 and the rotating shaft 10 and is connected to the housing of the motor 60, the output shaft 610 of the motor 60 is splined with the rotating shaft 10, and the rotating shaft 10 can directly drive the cover plate 11 and the screen 7 thereon to rotate through the torque output of the motor 60. It should be understood that the riveting connection here is only an example and not a limitation, and the rotating shaft 10 can also be engaged with the cover plate 11 in other forms.
[0042] like Fig.11 As shown, the rotating shaft 10 is a stepped column structure, and its outer peripheral surface includes a rotating shaft riveting head 1.10, a rotating shaft riveting surface 1.20, a rotating shaft damping mating surface 1.30, a rotating shaft outer cylindrical surface 1.40 and a rotating shaft bottom surface 1.50 in sequence. The rotating shaft 10 and the cover plate 11 are fixedly connected to each other by riveting. In fact, the rotating shaft riveting head 1.10 extends from the rotating shaft riveting surface and is formed by riveting and deformation of the pre-deformation rivet head 1.60. The pre-deformation rivet head 1.60 (before riveting) and the riveting hole 11.1 of the cover plate 11 (see Fig. 9 ) cooperate with each other, and their common hexagonal features can prevent relative rotation. It should be understood that the hexagonal features are only used as examples and not as limitations, and anti-rotation linkage structures in other forms can also be applied here. Fig.10 In the assembled state, the lower end surface 11.2 of the cover plate 11 (see Fig. 9 ) achieves zero contact with the rotating shaft riveting surface 1.20. In addition, the rotating shaft 10 also has a rotating shaft bottom 1.70. By limiting the rotating shaft bottom 1.70 and applying a certain riveting force on its top, the rivet head 1.60 before deformation can generate the rotating shaft riveting head 1.10 after riveting. In addition, a plurality of annular grooves 1.80 are provided on the rotating shaft damping mating surface 1.30, which are used to store grease when the rotating shaft 10 rotates relative to the housing 20, thereby reducing the friction of the rotating shaft 10 relative to the housing 20. In addition, the rotating shaft 10 also has a rotating shaft mounting hole 1.90, and the output shaft 610 of the motor 60 (see Fig. 9 ) is inserted into the rotating shaft mounting hole 1.90 for installation.
[0043] Back to Fig. 9 The housing 20 is a variable diameter cylindrical structure, and the lugs extending from the outer peripheral surface thereof are fixedly mounted on the housing of the motor 60 by bolts, for example. Fig.12 As shown, the upper portion of the housing 20 has a housing upper step surface 2.10 and a housing upper bushing hole 2.20. Fig.13 As shown, the housing 20 has a housing inner hole 2.30, a housing lower bushing hole 2.40 and a housing lower step surface 2.50.
[0044] Back to Fig. 9 The fixed axis rotation adjustment mechanism A further includes an upper bushing 30, which is used to lubricate and support the rotating shaft 10 to rotate above the housing 20. Fig.14 As shown, the cross section of the upper bushing 30 is L-shaped, and includes a bushing body 3.10 and a bushing flange 3.20. Fig.10 In the assembled state, the bushing body 3.10 is fitted with the bushing hole 2.20 on the housing; one side of the bushing flange 3.20 is fitted with the step surface 2.10 on the housing, and the other side is fitted with the lower end surface 11.2 of the cover plate 11 (see Fig. 9 ) to eliminate the shaking caused by the rotation of the screen 7.
[0045] Back to Fig. 9 The fixed axis rotation adjustment mechanism A further comprises a lower bushing 40 which is sleeved on the rotating shaft 10 and is used to eliminate the axial clearance between the rotating shaft 10 and the housing 20. Fig.15 As shown, the cross section of the lower bushing 40 is L-shaped, and includes a bushing body 4.10 and a bushing flange 4.20. Fig.10 In the assembled state, one side of the bushing body 4.10 is in contact with the lower bushing hole 2.40 of the shell, and the other side is in contact with the outer cylindrical surface 1.40 of the rotating shaft; one side of the bushing flange 4.20 is in contact with the bottom surface 1.50 of the rotating shaft, and the other side is in contact with the lower step surface 2.50 of the shell; in this way, the lower bushing 40 is sandwiched between the rotating shaft 10 and the shell 20, playing the role of supporting the rotating shaft 10 to rotate smoothly.
[0046] Back to Fig. 9 The fixed-axis rotation adjustment mechanism A further includes a damping device 50 arranged in the axial direction between the rotating shaft 10 and the housing 20, which is used to provide the damping required in the circumferential direction when the rotating shaft 10 rotates in the housing 20. Fig.10 In the assembled state, the damping device 50 is a damping ring, which is located between the inner hole 2.30 of the housing and the damping mating surface 1.30 of the rotating shaft to provide a certain friction resistance and limit the axial movement of the rotating shaft 10.
[0047] The specific assembly process of the fixed-axis rotation adjustment mechanism A includes: the upper bushing 30 is placed in the upper bushing hole 2.20 of the shell, the damping device 50 is sleeved on the damping mating surface 1.30 of the rotating shaft, the lower bushing 40 is placed on the outer cylindrical surface 1.40 of the rotating shaft, the rotating shaft 10 (before riveting) equipped with the damping device 50 and the lower bushing 40 is integrally pressed into the inner hole 2.30 of the shell, the cover plate 11 is sleeved on the rotating shaft 10 that has not been riveted, and a certain riveting force is applied until the deformation front rivet head 1.60 at the top is deformed to form the rotating shaft riveting head 1.10, the output shaft 610 of the motor 60 is sleeved into the rotating shaft mounting hole 1.90, the motor 60 and the shell of the shell 20 are fixedly connected, and the screen 7 is connected to the rotating shaft mounting hole 11.3 (see Fig. 9 )Firm connection.
[0048] The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The above embodiment of the present invention can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the description of the present invention fall within the scope of protection of the claims of the present invention. The contents not described in detail in the present invention are all conventional technical contents.
Claims
1. A fixed axis rotation adjustment mechanism, characterized in that: The fixed-axis rotation adjustment mechanism includes a rotating shaft, a shell, a damping device and a motor, wherein the damping device is arranged in the axial direction between the rotating shaft and the shell, the shell for supporting the rotating shaft is fixedly connected to the outer shell of the motor, the output shaft of the motor is connected to the rotating shaft to drive the rotating shaft to rotate around the fixed axis through the torque output of the motor, the rotating shaft has a rotating shaft damping mating surface, the shell has a shell inner hole, and the damping device provides friction resistance between the shell inner hole and the rotating shaft damping mating surface to provide the damping required in the circumferential direction when the rotating shaft rotates in the shell, while limiting the axial movement of the rotating shaft.
2. The fixed-axis rotation adjustment mechanism according to claim 1, characterized in that: The damping device is a damping ring.
3. The fixed-axis rotation adjustment mechanism according to claim 1, characterized in that: The fixed-axis rotation adjustment mechanism also includes a cover plate, and the rotating shaft is riveted to the cover plate; the rotating shaft has a rotating shaft riveting surface, and the lower end surface of the cover plate and the rotating shaft riveting surface achieve zero contact.
4. The fixed-axis rotation adjustment mechanism according to claim 3, characterized in that: The rotating shaft comprises a rotating shaft riveting head extending from the rotating shaft riveting surface. The rotating shaft riveting head is formed by riveting and deforming the front rivet head. The front rivet head is anti-rotationally matched with the riveting hole of the cover plate.
5. The fixed-axis rotation adjustment mechanism according to claim 1, characterized in that: The fixed-axis rotation adjustment mechanism also includes a bushing which is sleeved on the rotating shaft and is used for lubricating and supporting the rotating shaft to rotate on the housing.
6. The fixed-axis rotation adjustment mechanism according to claim 5, characterized in that: The bushing includes an integrally formed bushing body and a bushing flange; the rotating shaft has an outer cylindrical surface of the rotating shaft, the shell has a shell bushing hole, and the two sides of the bushing body respectively fit the shell bushing hole and the outer cylindrical surface of the rotating shaft in the assembled state; the rotating shaft has a rotating shaft step surface, the shell has a shell upper step surface, and the two sides of the bushing flange respectively fit the rotating shaft step surface and the shell upper step surface in the assembled state.
7. The fixed-axis rotation adjustment mechanism according to claim 1, characterized in that: The fixed-axis rotation adjustment mechanism also includes a clamping device, which is used to limit the axial movement of the rotating shaft.
8. The fixed-axis rotation adjustment mechanism according to claim 7, characterized in that: The rotating shaft has a rotating shaft limiting groove, the shell has a shell lower end surface, and the clamping device is located between the shell lower end surface and the rotating shaft limiting groove.
9. The fixed-axis rotation adjustment mechanism according to claim 1, characterized in that: A plurality of annular grooves are provided on the damping mating surface of the rotating shaft, which are used to store grease when the rotating shaft rotates relative to the housing, thereby reducing the friction between the rotating shaft and the housing.
10. The fixed-axis rotation adjustment mechanism according to claim 1, characterized in that: The output shaft of the motor is spline-matched with the rotating shaft, and the rotating shaft is fixedly connected with the screen.