Deflection device

Abstract

The utility model relates to a deflection device, which is used for rotating a display screen and comprises a driving component, a transmission component connected with the driving component, a rotating shaft component connected with the transmission component and a damping component used for providing friction damping for the rotating shaft component, the rotating shaft component comprises a main shaft, one end of the main shaft is connected with the display screen, and the other end of the main shaft is connected with the display screen. The driving assembly can drive the transmission assembly to drive the main shaft to rotate, the damping assembly comprises a damping sleeve and a plurality of clamping pieces, the damping sleeve is arranged on the main shaft in a relatively rotating and sleeving mode, the clamping pieces are clamped on the damping sleeve in a stacked mode, and the clamping pieces can enable the inner surface of the damping sleeve to be in pressing fit with the outer circumferential face of the main shaft. The deflection device designed by the utility model is good in stability and can effectively prevent the display screen from shaking or shaking.

Description

Technical Field

[0001] This utility model relates to the field of vehicle display screen rotation technology, and in particular to a deflection device. Background Technology

[0002] With the rapid development of intelligent cockpits in automobiles, multiple displays are installed inside the car's driver's cab. Among them, the central control display on the dashboard is used most frequently. In order to accommodate both the driver and passenger seats and enhance the technological feel of the intelligent cockpit, the central control display is designed to be able to tilt left and right. Generally, an electric tilting device drives the central control display to tilt left and right within a certain angle range. However, due to the assembly gaps between components and wear and tear after long-term use, the stability of the central control display deteriorates. During the car's operation or when controlling the tilting of the display, the display may shake or vibrate, affecting the user experience. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to design a deflection device that offers good stability and effectively prevents the display screen from shaking or jittering.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] Design a deflection device for rotating a display screen, including a drive assembly, a transmission assembly connected to the drive assembly, a rotating shaft assembly connected to the transmission assembly, and a damping assembly for providing frictional damping to the rotating shaft assembly. The rotating shaft assembly includes a main shaft, one end of which is connected to the display screen. The drive assembly can drive the transmission assembly to rotate the main shaft. The damping assembly includes a damping sleeve that is rotatably sleeved on the main shaft, and a plurality of clamping members stacked and clamped on the damping sleeve. The clamping members can press the inner surface of the damping sleeve tightly against the outer peripheral surface of the main shaft.

[0006] The deflection device of the scheme provides stable friction damping by sleeving the damping assembly on the main shaft, so as to improve the stability of the rotation of the main shaft and reduce the jitter thereof; when the main shaft is stationary, the damping assembly tightly holds the main shaft, which can effectively prevent the free rotation of the main shaft caused by external factors, thereby ensuring the stability of the display screen. Specifically, one end of the main shaft can be connected to the back of the display screen through the connecting structure, and the display screen is deflected left and right by the reciprocating rotation of the main shaft around its axis. The rotation of the main shaft is driven and controlled by the driving assembly and the transmission assembly. The damping sleeve is sleeved on the main shaft, and the inner surface of the damping sleeve is tightly pressed against the outer surface of the main shaft by a plurality of clamping members, and the damping sleeve is fixed. When the main shaft rotates, a friction force is generated between the damping sleeve and the main shaft, thereby providing damping force for the main shaft, and effectively preventing the main shaft from moving during rotation. In addition, the pressure between the damping sleeve and the main shaft can be adjusted by increasing or decreasing the number of clamping members, thereby changing the friction force between the damping sleeve and the main shaft and changing the size of the friction damping. At the same time, the friction force between the damping sleeve and the main shaft is relatively stable due to the elasticity of the clamping members, and is less affected by changes in environmental temperature, thereby avoiding the influence of changes in environmental temperature on the stability of the friction damping.

[0007] Further, the housing is provided, and the driving assembly, the transmission assembly, the shaft assembly and the damping assembly are arranged in the housing.

[0008] The housing plays a protective role. The housing includes upper and lower parts. After the driving assembly, the transmission assembly, the shaft assembly and the damping assembly are assembled into the housing, the upper and lower parts of the housing are connected and fixed by fasteners. A through hole is formed in the housing at a position corresponding to the main shaft. One end of the main shaft connected to the display screen extends out of the through hole to facilitate connection with the display screen.

[0009] Further, the housing is provided with a limiting cavity, and the damping sleeve is fixedly arranged in the limiting cavity.

[0010] The damping sleeve is fixedly arranged in the limiting cavity, and the limiting fit of the two parts keeps the damping sleeve stationary when the main shaft rotates, thereby causing relative rotation between the two parts.

[0011] Further, the limiting cavity is provided with a limiting groove, and the outer periphery of the damping sleeve is provided with a limiting protrusion embedded in the limiting groove.

[0012] The outer periphery of the damping sleeve is provided with a plurality of limiting protrusions in the axial direction, and the limiting cavity is provided with a limiting groove corresponding to the limiting protrusion. When the housing is arranged on the damping sleeve, the limiting protrusion is embedded in the limiting groove to limit the rotation of the damping sleeve.

[0013] Further, the shaft assembly further includes bearings sleeved on both ends of the main shaft, and the housing is provided with a bearing seat for mounting the bearings.

[0014] By setting bearings at both ends of the main shaft, rotation of the main shaft around its axis can be assisted, wear can be reduced, and service life can be prolonged. In addition, a ring groove is formed at the position where the main shaft and the bearing are connected, and a rubber ring can be installed at the position of the ring groove. The rubber ring can further realize interference fit between the two, improve the sealing performance, and also play the role of shock absorption, buffering and noise reduction.

[0015] Further, the rotating shaft assembly further comprises a wear-resistant gasket, a friction plate and an elastic member which are sequentially sleeved on the main shaft, the main shaft is provided with an abutting surface, and the elastic member can press the friction plate against the wear-resistant gasket so that the wear-resistant gasket abuts against the abutting surface.

[0016] The elastic member can adopt a ring-shaped wave spring, one side of the wave spring abuts against the shell, and the other side abuts against the friction plate. The wave spring presses the friction plate against the wear-resistant gasket by elastic force, and then makes the wear-resistant gasket abut against the abutting surface, so as to provide axial force, eliminate axial clearance of the main shaft during assembly, and avoid abnormal noise caused by movement of the main shaft during rotation.

[0017] Further, the driving assembly comprises a driving motor, and an output end of the driving motor is connected with a worm.

[0018] In the scheme, the driving force is in the form of a motor drive, the driving motor is driven to rotate by a control device, and then the main shaft is driven to rotate by the speed reduction and torque increase of the transmission assembly.

[0019] Further, the rotating shaft assembly further comprises a swing arm gear sleeved on the main shaft, and the swing arm gear is connected with an output end of the transmission assembly.

[0020] In the scheme, the driving connection between the main shaft and the transmission assembly is realized through the swing arm gear. A round hole is formed at one end of the swing arm gear, the swing arm gear is fixedly sleeved on the main shaft, and the teeth at the other end are meshed and connected with the output end of the transmission assembly.

[0021] Further, the transmission assembly comprises a plurality of gear sets arranged in meshing, the transmission assembly is meshed and connected with the swing arm gear through the gear at the output end, and the transmission assembly is meshed and connected with the worm through the gear at the input end.

[0022] The transmission assembly adopts a plurality of gear sets to form a speed reduction device, which can reduce speed and increase torque, ensure stability and efficiency of power transmission, and has compact layout, which is beneficial to miniaturization design of the device.

[0023] Further, an angle control assembly for monitoring and controlling the rotation angle of the display screen is further included.

[0024] The angle control assembly adopts a magnetic angle encoder assembly, and the rotation angle of the main shaft is measured and controlled through the magnetic angle encoder assembly, so that the deflection angle of the display screen is accurately controlled.

[0025] Compared with the prior art, the display screen deflection device has the following beneficial effects:

[0026] The deflection device of the present application provides stable friction damping by sleeving a damping assembly on the main shaft to improve the stability of the rotation of the main shaft and reduce its jitter; when the main shaft is stationary, the damping assembly tightly grips the main shaft to effectively prevent the main shaft from freely rotating due to external factors, thereby ensuring the stability of the display screen. Specifically, one end of the main shaft can be connected to the back of the display screen through a connecting structure, and the display screen is deflected left and right by the reciprocating rotation of the main shaft around its axis. The rotation of the main shaft is driven and controlled by the driving assembly and the transmission assembly. A damping sleeve is sleeved on the main shaft, and the inner surface of the damping sleeve is pressed tightly against the outer surface of the main shaft by a plurality of clamping elements, and the damping sleeve is fixed. When the main shaft rotates, friction is generated between the damping sleeve and the main shaft, thereby providing damping force for the main shaft and effectively preventing the main shaft from moving during rotation. In addition, the pressure between the damping sleeve and the main shaft can be adjusted by increasing or decreasing the number of clamping elements, which can change the friction between the damping sleeve and the main shaft, thereby changing the size of the friction damping. At the same time, the friction between the damping sleeve and the main shaft is relatively stable due to the elasticity of the clamping elements, and is less affected by changes in environmental temperature, thereby avoiding the influence of changes in environmental temperature on the stability of the friction damping. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is an exploded view of the structure of the deflection device of an embodiment of the present application.

[0028] Figure 2 It is a sectional view of the deflection device of an embodiment of the present application.

[0029] Figure 3 It is a structure diagram of the upper half of the shell of an embodiment of the present application.

[0030] Figure 4 It is a driving connection diagram of the driving assembly, transmission assembly and shaft assembly of an embodiment of the present application.

[0031] Figure 5 It is an assembly exploded view of the shaft assembly and the damping assembly of an embodiment of the present application.

[0032] Illustrations: 1. Outer shell; 11. Limiting cavity; 12. Limiting groove; 13. Bearing seat; 2. Drive assembly; 21. Drive motor; 22. Worm gear; 3. Transmission assembly; 31. First-stage gear; 32. Second-stage gear; 33. Third-stage gear; 4. Shaft assembly; 41. Main shaft; 42. Bearing; 43. Wear-resistant pad; 44. Friction plate; 45. Elastic element; 46. Swing arm gear; 411. Abutting surface; 5. Damping assembly; 51. Damping sleeve; 52. Clamping element; 511. Limiting protrusion; 6. Angle control assembly. Detailed Implementation

[0033] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0034] like Figures 1 to 5 As shown, this embodiment provides a deflection device for rotating a display screen, including a housing 1, a drive assembly 2, a transmission assembly 3 connected to the drive assembly 2, a rotating shaft assembly 4 connected to the transmission assembly 3, and a damping assembly 5 for providing frictional damping to the rotating shaft assembly 4. The drive assembly 2, transmission assembly 3, rotating shaft assembly 4, and damping assembly 5 are all disposed inside the housing 1, which serves a protective function. The housing 1 comprises upper and lower parts. After the drive assembly 2, transmission assembly 3, rotating shaft assembly 4, and damping assembly 5 are assembled into the housing 1, the upper and lower parts of the housing 1 are connected and fixed by fasteners. The rotating shaft assembly 4 includes a main shaft 41. A through hole is opened in the outer shell 1 at the position corresponding to the main shaft 41. One end of the main shaft 41 that is connected to the display screen extends out from the through hole and is connected to the display screen. The driving assembly 2 can drive the transmission assembly 3 to drive the main shaft 41 to rotate. The damping assembly 5 includes a damping sleeve 51 that is rotatably sleeved on the main shaft 41 and a plurality of clamping members 52 stacked and clamped on the damping sleeve 51. The clamping members 52 can press and fit the inner surface of the damping sleeve 51 against the outer peripheral surface of the main shaft 41. In this embodiment, the clamping members 52 are C-shaped retaining rings.

[0035] like Figures 2 to 5 As shown, the outer shell 1 has a limiting cavity 11, and the damping sleeve 51 is fixedly installed in the limiting cavity 11. The limiting cavity 11 has a limiting groove 12, and the outer peripheral surface of the damping sleeve 51 has a limiting protrusion 511 that is embedded in the limiting groove 12. The outer peripheral surface of the damping sleeve 51 has multiple limiting protrusions 511 along the axial direction. The limiting cavity 11 has a limiting groove 12 that corresponds one-to-one with the limiting protrusion 511. When the outer shell 1 is placed on the damping sleeve 51, the limiting protrusion 511 is embedded in the limiting groove 12 to restrict the rotation of the damping sleeve 51. Through the limiting cooperation between the two, when the main shaft 41 rotates, the damping sleeve 51 remains stationary, and thus the two rotate relative to each other.

[0036] As shown in Figure 2 and Figure 5 , the rotating shaft assembly 4 further comprises bearings 42 sleeved on both ends of the main shaft, and the shell 1 is provided with bearing positions 13 for mounting the bearings 42. By arranging the bearings 42 on both ends of the main shaft 41, the rotation of the main shaft 41 around the axis can be assisted, the wear can be reduced, and the service life can be prolonged. In addition, a ring groove is arranged at the position where the main shaft 41 is connected with the bearing 42, and a rubber ring can be mounted at the position of the ring groove. The interference fit between the main shaft 41 and the bearing 42 is further realized by the rubber ring, the sealing performance is improved, and the rubber ring also has the functions of shock absorption, buffering and noise reduction. The bearing position 13 is provided with an abutting surface, one end of the bearing 42 abuts on the abutting surface, and the axial limiting effect is achieved, so that the axial movement of the main shaft 41 can be effectively avoided, and the abnormal sound can be reduced.

[0037] As shown in Figure 2 and Figure 5 , the rotating shaft assembly 4 further comprises a wear-resistant gasket 43, a friction plate 44 and an elastic member 45 which are sequentially sleeved on the main shaft 41, and the main shaft 41 is provided with an abutting surface 411. The elastic member 45 can press the friction plate 44 against the wear-resistant gasket 43 so that the wear-resistant gasket 43 abuts on the abutting surface 411. The elastic member 45 can adopt a ring-shaped wave spring. One side of the wave spring abuts on the shell 1, and the other side abuts on the friction plate 44. The friction plate 44 is pressed against the wear-resistant gasket 43 by the elastic force, and then the wear-resistant gasket 43 abuts on the abutting surface 411, so as to provide an axial force, eliminate the axial gap of the main shaft 41 during assembly, and avoid abnormal sound caused by the movement of the main shaft 41 during rotation.

[0038] As shown in Figure 4 , the driving assembly 2 comprises a driving motor 21, and the output end of the driving motor 21 is connected with a worm 22. The worm 22 is connected with the input end of the transmission assembly 3. The driving force is in the form of motor driving. The driving motor 21 drives the worm 22 to rotate through the control device, and then drives the main shaft 41 to rotate through the speed reduction and torque increase of the transmission assembly 3. The driving motor 21 is fixed on the shell 1, and a shock pad is wrapped around the driving motor 21. The driving motor 21 is separated from the shell 1 by the shock pad, so as to reduce the noise of the driving motor 21 and the resonance and sympathy with the shell 1.

[0039] As shown in Figure 4 and Figure 5 , the rotating shaft assembly 4 further comprises a swing arm gear 46 sleeved on the main shaft 41, and the swing arm gear 46 is connected with the output end of the transmission assembly 3. The driving connection between the main shaft 41 and the transmission assembly 3 is realized through the swing arm gear 46. The swing arm gear 46 is provided with a circular hole at one end, is fixedly sleeved on the main shaft 41, and the teeth at the other end are meshed and connected with the output end of the transmission assembly 3.

[0040] As shown in Figure 4As shown, the transmission assembly 3 comprises a plurality of meshing gear sets, adopts a plurality of gear to form a speed reducer, can reduce speed and increase torque, ensures the stability and efficiency of power transmission, and the layout is compact, which is beneficial to realize the miniaturization design of the device. In the embodiment, the plurality of gear sets is a three-stage gear transmission, comprising a first gear 31, a second gear 32 and a third gear 33 which are meshed with each other, wherein the first gear 31 is meshed with the worm 22 connected with the output end of the driving motor 21, and the third gear 33 is meshed with the swing arm gear 46 sleeved on the main shaft 41.

[0041] As shown in Figure 1 and Figure 4 It also includes an angle control assembly 6 for monitoring the rotation angle of the display screen. The angle control assembly 6 adopts a magnetic angle encoder assembly to measure and control the rotation angle of the main shaft 41, and then accurately control the deflection angle of the display screen. The angle control assembly 6 is connected with the transmission assembly 3, specifically, the angle control assembly 6 comprises a signal gear meshed with the third gear 33, a magnet is arranged below the signal gear, and an angle encoder plate is arranged in the interval of the magnet. The rotation of the signal gear changes the magnetic field generated by the magnet, the sensor on the angle encoder plate senses the change of the magnetic field, and the rotation angle is obtained through the processing of the related module and fed back to the control device. Compared with the way of arranging the control assembly 6 on the main shaft 41, the angle control of the present scheme is more accurate. In the embodiment, the control device includes a control circuit board, and the driving of the driving motor 21 is controlled by the control circuit board. The control technology of the control circuit board is prior art, and will not be described in detail here.

[0042] The deflection device of the embodiment provides stable frictional damping by sleeving the damping assembly 5 on the main shaft 41, so that the rotation stability of the main shaft 41 is improved and the jitter of the main shaft 41 is reduced when the main shaft 41 rotates; the damping assembly 5 tightly holds the main shaft 41, so that the free rotation of the main shaft 41 caused by external factors is effectively prevented when the main shaft 41 is stationary, and the stability of the display screen is ensured. Specifically, one end of the main shaft 41 is connected to the back of the display screen through a connecting structure, the display screen is deflected left and right by the reciprocating rotation of the main shaft 41 around its axis, and the rotation of the main shaft 41 is driven and controlled by the driving assembly 2 driving the transmission assembly 3. The damping sleeve 51 is sleeved on the main shaft 41, and the inner surface of the damping sleeve 51 and the outer surface of the main shaft 41 are tightly pressed and fitted through a plurality of clamping pieces 52, and the damping sleeve 51 is fixed. When the main shaft 41 rotates, a frictional force is generated between the damping sleeve 51 and the main shaft 41, thereby providing a damping force for the main shaft 41, and effectively preventing the main shaft 41 from moving during rotation. In addition, the pressure between the damping sleeve 51 and the main shaft 41 can be adjusted by increasing or decreasing the number of clamping pieces 52, so as to change the frictional force between the damping sleeve 51 and the main shaft 41, and thereby change the size of the frictional damping. At the same time, because of the elasticity of the clamping pieces 52, the frictional force between the damping sleeve 51 and the main shaft 41 is relatively stable, and is less affected by changes in environmental temperature, thereby avoiding the influence of changes in environmental temperature on the stability of the frictional damping.

[0043] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In addition, the terms "first", "second", and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0045] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A deflection device for rotating a display screen, characterized by The application relates to a display screen driving device, which comprises a driving assembly, a transmission assembly connected with the driving assembly, a rotating shaft assembly connected with the transmission assembly, and a damping assembly for providing frictional damping for the rotating shaft assembly, wherein the rotating shaft assembly comprises a main shaft, one end of the main shaft is connected with a display screen, the driving assembly can drive the transmission assembly to rotate the main shaft, the damping assembly comprises a damping sleeve oppositely sleeved on the main shaft and a plurality of clamping pieces stacked and clamped on the damping sleeve, and the clamping pieces can make the inner surface of the damping sleeve tightly contact with the outer circumferential surface of the main shaft.

2. Deflection device according to claim 1, characterized in that The application further comprises a shell, and the driving assembly, the transmission assembly, the rotating shaft assembly and the damping assembly are arranged in the shell.

3. Deflection device according to claim 2, characterized in that The shell is provided with a limiting cavity, and the damping sleeve is fixedly arranged in the limiting cavity.

4. Deflection device according to claim 3, characterized in that The limiting cavity is provided with a limiting groove, and the outer circumferential surface of the damping sleeve is provided with a limiting protrusion embedded in the limiting groove.

5. The deflection device of claim 2, wherein, The rotating shaft assembly further comprises bearings sleeved on both ends of the main shaft, and the shell is provided with bearing positions for mounting the bearings.

6. The deflection device of claim 1, wherein The rotating shaft assembly further comprises wear-resistant gaskets, friction plates and elastic pieces which are sequentially sleeved on the main shaft, and the main shaft is provided with a resisting surface, and the elastic piece can make the friction plate tightly press the wear-resistant gasket so that the wear-resistant gasket abuts against the resisting surface.

7. The deflection device of claim 1, wherein The driving assembly comprises a driving motor, the output end of the driving motor is connected with a worm, and the worm is connected with the input end of the transmission assembly.

8. Deflection device according to claim 7, characterized in that The rotating shaft assembly further comprises a swing arm gear sleeved on the main shaft, and the swing arm gear is connected with the output end of the transmission assembly.

9. Deflection device according to claim 8, characterized in that The transmission assembly comprises a plurality of meshed transmission gear sets, the transmission assembly is meshed and connected with the swing arm gear through the gear at the output end, and the transmission assembly is meshed and connected with the worm through the gear at the input end.

10. The deflection device of claim 1, wherein, The application further comprises an angle control assembly for monitoring and controlling the rotating angle of the display screen.

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