Steering-by-wire hand feeling simulator of planetary gear structure

Abstract

The utility model relates to the field of automobile parts, and discloses a steer-by-wire hand feeling simulator with a planetary gear structure. Comprising a shell, a motor mounted on the shell, an inner gear rotationally connected to the inner side of the shell, a rear cover mounted on the shell and an upper sleeve mounted on the rear cover, wherein an output shaft of the motor extends into the shell and is fixedly connected with the axis of a sun gear; the rotating shaft is rotationally connected into the shell and penetrates through and extends to the outer portion of the upper sleeve, the planet carrier is installed on the rotating shaft, the planet shaft is installed on the planet carrier, the planet wheel is rotationally connected to the planet shaft, the sensor is installed on the outer portion of the rotating shaft, and the planet wheel is meshed with a sun wheel. The steering-by-wire hand feeling simulator has the following advantages and effects that planetary gear transmission is used as a speed reduction structure to be applied to the steering-by-wire hand feeling simulator, large space can be saved, the structure is compact, the size and mass are small, and layout is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a wire-controlled steering feel simulator with a planetary gear structure. Background Art

[0002] A series of devices used to change or maintain the direction of a car's movement or reversing is called a car steering system. The function of a car steering system is to control the direction of the car according to the driver's wishes. The car steering system is vital to the car's driving safety, so the parts of the car steering system are called safety parts.

[0003] With the development of steer-by-wire technology in automobile steering systems, it is inevitable that automobile steering systems will shift from electric power steering systems to steer-by-wire technology. Currently, most steer-by-wire steers use a worm gear as a road feel simulator for the reduction mechanism, which has large lateral force and low efficiency. In traditional mechanical connections, various connection mechanisms bring space limitations, causing the entire steering mechanism to occupy a large space. Therefore, a planetary gear structure steer-by-wire feel simulator is proposed. Utility Model Content

[0004] The utility model aims to provide a planetary gear structure wire-controlled steering feel simulator, which has the effect of being easy to open and close.

[0005] The above-mentioned technical purpose of the present utility model is achieved through the following technical solutions: A planetary gear structure wire-controlled steering feel simulator, characterized in that it includes a shell, a motor mounted on the shell, an output shaft of the motor extends to the interior of the shell and is fixedly connected to the axis of the sun gear, an internal gear rotatably connected to the inside of the shell, a rear cover mounted on the shell, an upper sleeve mounted on the rear cover, a rotating shaft rotatably connected to the shell and passing through and extending to the outside of the upper sleeve, a planetary carrier mounted on the rotating shaft, a planetary shaft mounted on the planetary carrier, a planetary wheel rotatably connected to the planetary shaft, and a sensor mounted on the outside of the rotating shaft, the planetary wheel is meshed with the sun gear, the planetary wheel is meshed with the internal gear, and the outside of the steering shaft is also equipped with an angle mechanical limit assembly with one end cooperating with the shell.

[0006] By adopting the above technical solution, when information from sensors such as angle, torque, and vehicle speed is sent to the controller, the controller controls the rotation of the motor, the rotation of the motor drives the rotation of the sun gear, the rotation of the sun gear drives the rotation and revolution of the planetary gears, the planetary gears make circular motion along the internal gears, the rotation of the planetary gears drives the planetary carrier to make circular motion, the rotation of the planetary carrier drives the steering shaft to rotate, the rotation of the steering shaft drives the steering wheel to rotate, and the use of the planetary gear transmission as a deceleration structure in the online steering feel simulator can save a lot of space, have a compact structure, small size and weight, and is convenient for layout.

[0007] When the steering shaft rotates, the mechanical angle limit is driven, and the mechanical angle limit stops rotating at the housing limit, and the steering wheel also stops rotating. The mechanical hard limit increases the driver's driving experience and improves driving safety and stability.

[0008] The present invention is further configured as follows: the angle mechanical limit assembly includes a rotating ring installed outside the rotating shaft, a protrusion installed outside the rotating ring, and a stopper installed on the inner wall of the shell.

[0009] By adopting the above technical solution, the steering shaft rotates and drives the protrusion on the outside of the rotating ring to rotate. The protrusion on the outside of the rotating ring rotates to one side of the stop block on the shell and stops rotating. Similarly, the steering shaft drives the protrusion on the outside of the rotating ring to rotate in the opposite direction and stops rotating after being limited to the other side of the stop block on the shell. The mechanical hard limit enhances the driver's driving experience and improves driving safety and stability.

[0010] The present invention is further configured as follows: the rotating shaft and the planet carrier are connected via a retaining spring.

[0011] By adopting the above technical solution, the stability of the connection between the rotating shaft and the planetary carrier is improved.

[0012] The present invention is further configured as follows: the planetary gears are rotatably connected to the planetary shafts via planetary gear bearings, and no less than three planetary gears are provided and are distributed in an annular shape with equal distances.

[0013] By adopting the above technical solution, the planetary gear bearing improves the stability of the planetary gear rotating on the planetary shaft, and the arrangement of multiple planetary gears is conducive to improving the stability of the planetary carrier rotation.

[0014] The present invention is further configured as follows: a mounting bracket is further installed on the upper sleeve.

[0015] By adopting the above technical solution, the mounting bracket facilitates the installation and fixation of the simulator as a whole.

[0016] The present invention is further configured as follows: a bearing is installed inside the housing, and the housing is rotatably connected to the rotating shaft via the bearing.

[0017] By adopting the above technical solution, the bearing is helpful to improve the rotation stability of the rotating shaft.

[0018] The beneficial effects of the utility model are:

[0019] 1. When information from sensors such as angle, torque, and vehicle speed is sent to the controller, the controller controls the rotation of the motor, which drives the sun gear to rotate, which drives the planetary gears to rotate and revolve, and the planetary gears make circular motion along the internal gears, which drives the planetary carrier to make circular motion, which drives the steering shaft to rotate, which drives the steering wheel to rotate. Using planetary gear transmission as a deceleration structure in a wire-controlled steering feel simulator can save a lot of space, has a compact structure, small size and weight, and is easy to layout.

[0020] 2. When the steering shaft rotates, the mechanical angle limit is driven. The mechanical angle limit rotates to the housing limit and stops rotating. The steering wheel also stops rotating. The mechanical hard limit increases the driver's driving experience and improves driving safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a side sectional view of the planetary gear and the sun gear meshing with each other in the utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 4 It is a side sectional view of the connection between the angle mechanical limit assembly and the rotating shaft of the utility model.

[0026] In the figure, 1. motor; 2. housing; 3. internal gear; 4. sun gear; 5. planetary gear; 6. planetary gear bearing; 7. planetary carrier; 8. retaining spring; 9. bearing; 10. angle mechanical limit assembly; 101. rotating ring; 102. protrusion; 103. slot; 11. sensor; 12. back cover; 13. upper sleeve; 14. mounting bracket; 15. rotating shaft; 16. planetary shaft. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0028] See also Figure 1-4 The utility model provides a planetary gear structure wire-controlled steering feel simulator, characterized in that it includes a housing 2, a motor 1 mounted on the housing 2, an output shaft of the motor 1 extending into the interior of the housing 2 and fixedly connected to the axis of the sun gear 4, an internal gear 3 rotatably connected to the inner side of the housing 2, a rear cover 12 mounted on the housing 2, an upper sleeve 13 mounted on the rear cover 12, a rotating shaft 15 rotatably connected to the interior of the housing 2 and passing through and extending to the outside of the upper sleeve 13, a planetary carrier 7 mounted on the rotating shaft 15, a planetary shaft 16 mounted on the planetary carrier 7, a planetary wheel 5 rotatably connected to the planetary shaft 16, and a sensor 11 mounted on the outside of the rotating shaft 15, the planetary wheel 5 meshing with the sun gear 4, the planetary wheel 5 meshing with the internal gear 3, and an angle mechanical limit assembly 10 with one end engaged with the housing 2 is further mounted on the outside of the steering shaft 15.

[0029] When information from sensors such as angle, torque, and vehicle speed is sent to the controller, the controller controls the motor 1 to rotate. The rotation of the motor 1 drives the sun gear 4 to rotate. The rotation of the sun gear 4 drives the planetary gear 5 to rotate and revolve. The planetary gear 15 makes a circular motion along the internal gear 3. The rotation of the planetary gear 5 drives the planetary carrier 7 to make a circular motion. The rotation of the planetary carrier 7 drives the steering shaft 15 to rotate. The rotation of the steering shaft 15 drives the steering wheel to rotate. Using the planetary gear transmission as a deceleration structure in the wire-controlled steering feel simulator can save a lot of space, has a compact structure, small size and weight, and is convenient for layout.

[0030] When the steering shaft 15 rotates and drives the angle mechanical limit 10, the angle mechanical limit 10 rotates to the limit position of the housing 2 and stops rotating, and the steering wheel also stops rotating. The mechanical hard limit increases the driver's driving experience and improves driving safety and stability.

[0031] The angle mechanical limit assembly 10 includes a rotating ring 101 installed on the outside of the rotating shaft 15, a protrusion 102 installed on the outside of the rotating ring 101, and a stop block 103 installed on the inner wall of the shell 2. The steering shaft 15 rotates to drive the protrusion 102 on the outside of the rotating ring 101 to rotate. The protrusion 102 on the outside of the rotating ring 101 rotates to one side of the stop block 103 on the shell 2 and stops rotating after being limited. Similarly, the steering shaft 15 drives the protrusion 102 on the outside of the rotating ring 101 to rotate in the opposite direction to the other side of the stop block 103 on the shell 2 and stops rotating after being limited. The mechanical hard limit increases the driver's driving experience and improves driving safety and stability.

[0032] The rotating shaft 15 and the planet carrier 7 are connected via a retaining spring 8 , thereby improving the stability of the connection between the rotating shaft 15 and the planet carrier 7 .

[0033] The planetary gears 5 are rotatably connected to the planetary shaft 16 via planetary gear bearings 6. There are no less than three planetary gears 5 distributed in a ring-shaped and equidistant manner. The planetary gear bearings 6 improve the stability of the rotation of the planetary gears 5 on the planetary shaft 16. The arrangement of multiple planetary gears 5 is conducive to improving the stability of the rotation of the planetary carrier 7.

[0034] A mounting bracket 14 is also mounted on the upper sleeve 13 , and the mounting bracket 14 facilitates the installation and fixation of the simulator as a whole.

[0035] A bearing 9 is installed inside the housing 2 , and the housing 2 is rotatably connected to the rotating shaft 15 via the bearing 9 . The bearing 9 is beneficial to improving the rotation stability of the rotating shaft 15 .

Claims

1. A planetary gear structure wire control steering feel simulator, characterized in that: The invention comprises a housing (2), a motor (1) mounted on the housing (2), an output shaft of the motor (1) extending into the interior of the housing (2) and fixedly connected to the axis of the sun gear (4), an internal gear (3) rotatably connected to the inside of the housing (2), a rear cover (12) mounted on the housing (2), an upper sleeve (13) mounted on the rear cover (12), a rotating shaft (15) rotatably connected to the interior of the housing (2) and penetrating and extending to the outside of the upper sleeve (13), a planetary carrier (7) mounted on the rotating shaft (15), a planetary shaft (16) mounted on the planetary carrier (7), a planetary gear (5) rotatably connected to the planetary shaft (16), and a sensor (11) mounted on the outside of the rotating shaft (15), wherein the planetary gear (5) meshes with the sun gear (4), the planetary gear (5) meshes with the internal gear (3), and an angle mechanical limit assembly (10) with one end engaged with the housing (2) is further mounted on the outside of the rotating shaft (15).

2. The planetary gear structure steer-by-wire feel simulator according to claim 1, characterized in that: The angle mechanical limit assembly (10) comprises a rotating ring (101) mounted on the outside of the rotating shaft (15), a protrusion (102) mounted on the outside of the rotating ring (101), and a stopper (103) mounted on the inner wall of the housing (2).

3. The planetary gear structure steer-by-wire feel simulator according to claim 2, characterized in that: The rotating shaft (15) and the planet carrier (7) are connected via a clamping spring (8).

4. The planetary gear structure steer-by-wire feel simulator according to claim 3, characterized in that: The planetary gears (5) are rotatably connected to the planetary shaft (16) via planetary gear bearings (6). No less than three planetary gears (5) are provided and are distributed in an annular shape at equal distances.

5. The planetary gear structure steer-by-wire feel simulator according to claim 4, characterized in that: A mounting bracket (14) is also installed on the upper sleeve (13).

6. The planetary gear structure steer-by-wire feel simulator according to claim 5, characterized in that: A bearing (9) is installed inside the housing (2), and the housing (2) is rotatably connected to a rotating shaft (15) via the bearing (9).

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