Steering feel simulation device, steering system, and vehicle

Abstract

The present application belongs to the technical field of vehicles, and discloses a steering feel simulation device, a steering system and a vehicle. The steering feel simulation device comprises a motor, a column, a steering shaft and a speed reduction mechanism. The column is sleeved on the outer periphery of the steering shaft, and the first end of the steering shaft extends out of the column. The end of the column away from the steering shaft in the axial direction is fixedly connected with the shell of the motor. The output shaft of the motor extends into the column, and the speed reduction mechanism is arranged in the column. The output shaft of the motor is in transmission connection with the input end of the speed reduction mechanism, and the output end of the speed reduction mechanism is in transmission connection with the second end of the steering shaft. The speed reduction mechanism can realize speed reduction and torque increase to simulate the steering feel, the axial length of the steering feel simulation device can be effectively reduced, the occupied space of the steering feel simulation device can be reduced, the weight and production cost of the steering feel simulation device can be reduced, and the spatial arrangement of the steering system on the vehicle is facilitated.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more particularly to a steering feel simulation device, a steering system, and a vehicle. Background Technology

[0002] With the development of autonomous driving and multimedia functions in vehicles, steer-by-wire systems have emerged. A steer-by-wire system uses sensors to detect the driver's steering data, then transmits the signals to the vehicle's ECU via a data bus, and receives feedback commands from the steering control system. The steering control system also receives the driver's steering commands from the steering mechanism and obtains wheel information from the steering system, thereby directing the movement of the entire steering system. Steer-by-wire systems eliminate the traditional mechanical connection between the steering wheel and the steering wheels, therefore requiring a steering feel simulation device to mimic the steering feel.

[0003] The steering feel simulation device uses a steering feel simulation motor. The motor outputs corresponding torque according to the ECU's instructions. The torque is transmitted to the steering shaft through a reduction mechanism, thereby transmitting the road impact torque simulated by the motor to the steering wheel to achieve steering feel simulation and provide the driver with road feel.

[0004] Currently, existing steering feel simulation devices typically place a reduction mechanism between the steering feel simulation motor and the column component. The reduction mechanism connects the output shaft of the steering feel simulation motor to the input end of the column component, and the output end of the column component is used to connect with the steering wheel. Although this can simulate steering feel, it has the problems of long axial length and large space occupation, which is not conducive to the spatial layout of the steering system. Summary of the Invention

[0005] The purpose of this invention is to provide a steering feel simulation device, a steering system, and a vehicle to solve the aforementioned problems existing in the prior art steering feel simulation devices.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A steering feel simulation device includes a motor, a column, a steering shaft, and a reduction mechanism; the column is sleeved on the outer periphery of the steering shaft, and the first end of the steering shaft extends out of the column;

[0008] The end of the tubular column that is axially away from the steering shaft is fixedly connected to the housing of the motor;

[0009] The output shaft of the motor extends into the tube column, and the reduction mechanism is disposed inside the tube column;

[0010] The output shaft of the motor is connected to the input end of the reduction mechanism, and the output end of the reduction mechanism is connected to the second end of the steering shaft.

[0011] As a preferred embodiment of the aforementioned steering feel simulation device, the deceleration mechanism includes a deceleration mechanism body and a drive shaft;

[0012] The output shaft of the motor is driven to the input end of the transmission shaft, the output end of the transmission shaft is driven to the input end of the reduction mechanism body, and the output end of the reduction mechanism body is driven to the second end of the steering shaft; or, the output shaft of the motor is driven to the input end of the reduction mechanism body, the output end of the reduction mechanism body is driven to the input end of the transmission shaft, and the output end of the transmission shaft is driven to the second end of the steering shaft.

[0013] As a preferred embodiment of the aforementioned steering feel simulation device, the transmission shaft includes an input shaft and an intermediate shaft. The input shaft and the intermediate shaft are slidably connected along the axial direction, and the input shaft can drive the intermediate shaft to rotate coaxially. The output shaft of the motor is drivenly connected to the input shaft, and the intermediate shaft is also drivenly connected to the input end of the reduction mechanism body.

[0014] As a preferred embodiment of the aforementioned steering feel simulation device, the column includes a first column and a second column. The first column is fixedly connected to the housing of the motor and slidably connected to the second column. The first end of the steering shaft extends out of the second column. The deceleration mechanism body is disposed inside the second column.

[0015] As a preferred embodiment of the aforementioned steering feel simulation device, one end of one of the input shaft and the intermediate shaft is sleeved on the outer circumference of the other, and the one of the input shaft and the intermediate shaft sleeved on the outer circumference is rotatably connected to the inner circumference of the first column and / or the inner circumference of the second column; and / or, the outer circumference of the steering shaft is rotatably connected to the inner circumference of the second column.

[0016] As a preferred embodiment of the aforementioned steering feel simulation device, the input shaft is provided with a first axial sliding limit portion, and the intermediate shaft can abut against the first axial sliding limit portion axially; and / or, the intermediate shaft is provided with a second axial sliding limit portion, and the input shaft can abut against the second axial sliding limit portion axially; and / or, the first column is provided with a third axial sliding limit portion, and the second column can abut against the third axial sliding limit portion axially; and / or, the second column is provided with a fourth axial sliding limit portion, and the first column can abut against the fourth axial sliding limit portion axially.

[0017] As a preferred embodiment of the aforementioned steering feel simulation device, the deceleration mechanism body includes a sun gear, planet gears, a planet carrier, and a gear ring fixedly disposed within the column. The planet gears are rotatably connected to the planet carrier and mesh with both the sun gear and the gear ring. The output end of the drive shaft is fixedly connected to the axle of the sun gear, and the planet carrier is fixedly connected to the steering shaft.

[0018] As a preferred embodiment of the aforementioned steering feel simulation device, the planetary carrier includes a first sub-planetary carrier and a second sub-planetary carrier connected to each other. Both the first sub-planetary carrier and the second sub-planetary carrier are rotatably connected to the planetary gears, and the planetary gears are located between the first sub-planetary carrier and the second sub-planetary carrier.

[0019] The first sub-planetary carrier is rotatably connected to the inner circumference of the gear ring and / or the inner circumference of the column, and the second sub-planetary carrier is fixedly connected to the steering shaft.

[0020] The steering system includes the aforementioned steering feel simulation device.

[0021] The vehicle includes the aforementioned steering feel simulation device or the aforementioned steering system.

[0022] The beneficial effects of this invention are:

[0023] This invention provides a steering feel simulation device. The device includes a motor, a column, a steering shaft, and a reduction mechanism. The column is sleeved around the outer periphery of the steering shaft, with a first end of the steering shaft extending out of the column. One end of the column, axially away from the steering shaft, is fixedly connected to the motor housing. The motor's output shaft extends into the column, and the reduction mechanism is housed within the column. The motor's output shaft is drive-connected to the input end of the reduction mechanism, and the reduction mechanism's output end is drive-connected to the second end of the steering shaft.

[0024] For steering feel simulation devices of the same specifications, the axial length of the column and the axial length of the steering shaft extending out of the column are fixed values. Therefore, this steering feel simulation device, by fixing the end of the column away from the steering shaft along the axial direction to the motor housing, extending the motor output shaft into the column, setting the reduction mechanism inside the column, and setting the motor output shaft to drive the input end of the reduction mechanism, and the output end of the reduction mechanism to drive the second end of the steering shaft, can be understood that the connection structure for driving the motor output shaft to the input end of the reduction mechanism is located inside the column, the reduction mechanism is also located inside the column, and no other structure is set between the column and the motor housing. Under the premise that the axial length of the column and the axial length of the steering shaft extending out of the column are fixed values, the axial length of the steering feel simulation device can be effectively reduced. Specifically, along the axial direction of the column, the axial length of the steering shaft inside the column and / or the extension length of the reduction mechanism can be adaptively shortened according to actual working conditions, so that the connection structure for driving the motor output shaft to the input end of the reduction mechanism is located inside the column, and the reduction mechanism is located inside the column. Therefore, compared with existing technologies, it can not only achieve speed reduction and torque increase through the deceleration mechanism to simulate the feel, but also effectively reduce the axial length of the steering feel simulation device, reduce the space occupied by the steering feel simulation device, reduce the weight and production cost of the steering feel simulation device, and facilitate the spatial layout of the steering system.

[0025] The present invention also provides a steering system including the aforementioned steering feel simulation device. By employing the aforementioned steering feel simulation device, the axial length of the steering feel simulation device can be effectively reduced, the space occupied by the steering feel simulation device can be reduced, and the spatial arrangement of the steering system on the vehicle is beneficial.

[0026] The present invention also provides a vehicle including the aforementioned steering feel simulation device or the aforementioned steering system, which facilitates vehicle assembly and manufacturing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the steering feel simulation device provided in a specific embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional view of a steering feel simulation device provided in a specific embodiment of the present invention;

[0029] Figure 3 This is a partial structural schematic diagram of the steering feel simulation device provided in a specific embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the deceleration mechanism provided in a specific embodiment of the present invention from a first perspective;

[0031] Figure 5This is a schematic diagram of the deceleration mechanism provided in a specific embodiment of the present invention from a second perspective.

[0032] In the picture:

[0033] 1. Electric motor;

[0034] 2. Tubing string; 21. First tubing string; 22. Second tubing string; 221. First sub-tubing string;

[0035] 3. Steering shaft;

[0036] 4. Reduction mechanism; 41. Reduction mechanism body; 411. Sun gear; 412. Planet gear; 4131. First sub-planet carrier; 4132. Second sub-planet carrier; 414. Gear ring; 415. First bearing; 42. Drive shaft; 421. Input shaft; 4211. First axial sliding limit part; 422. Intermediate shaft; 4221. Second axial sliding limit part; 43. Second bearing; 44. Third bearing. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0041] Example 1

[0042] like Figures 1 to 5 As shown, the present invention provides a steering feel simulation device, which includes a motor 1, a column 2, a steering shaft 3, and a reduction mechanism 4. The column 2 is sleeved on the outer periphery of the steering shaft 3, with the first end of the steering shaft 3 extending out of the column 2. The end of the column 2 axially away from the steering shaft 3 is fixedly connected to the housing of the motor 1. The output shaft of the motor 1 extends into the column 2, and the reduction mechanism 4 is disposed within the column 2. The output shaft of the motor 1 is drive-connected to the input end of the reduction mechanism 4, and the output end of the reduction mechanism 4 is drive-connected to the second end of the steering shaft 3.

[0043] For steering feel simulation devices of the same specifications, the axial length of the column 2 and the axial length of the steering shaft 3 extending out of the column 2 are both fixed values. Therefore, this steering feel simulation device, by fixing the end of the column 2 away from the steering shaft 3 along the axial direction to the housing of the motor 1, extending the output shaft of the motor 1 into the column 2, setting the reduction mechanism 4 inside the column 2, and setting the output shaft of the motor 1 to be driven by the input end of the reduction mechanism 4, and the output end of the reduction mechanism 4 to be driven by the second end of the steering shaft 3, it can be understood that the connection structure for the drive connection between the output shaft of the motor 1 and the input end of the reduction mechanism 4 is located inside the column 2, the reduction mechanism 4 is also located inside the column 2, and no other structure is set between the column 2 and the housing of the motor 1, so that under the premise that the axial length of the column 2 and the axial length of the steering shaft 3 extending out of the column 2 are both fixed values, the axial length of the steering feel simulation device can be effectively reduced; specifically, along the axial direction of the column 2, the axial length of the steering shaft 3 inside the column 2 and / or the extension length of the reduction mechanism 4 can be adaptively shortened according to the actual working conditions, so that the connection structure for the drive connection between the output shaft of the motor 1 and the input end of the reduction mechanism 4 is located inside the column 2, and the reduction mechanism 4 is located inside the column 2. Therefore, compared with the existing technology, it can not only achieve deceleration and torque increase through the deceleration mechanism 4 to simulate the feel, but also effectively reduce the axial length of the steering feel simulation device, reduce the space occupied by the steering feel simulation device, reduce the weight and production cost of the steering feel simulation device, and facilitate the spatial arrangement of the steering system on the vehicle.

[0044] Among them, such as Figure 2 and Figure 3As shown, the reduction mechanism 4 includes a reduction mechanism body 41 and a transmission shaft 42.

[0045] Among them, such as Figure 2 and Figure 3 As shown, the output shaft of motor 1 is connected to the input end of transmission shaft 42, the output end of transmission shaft 42 is connected to the input end of reduction mechanism body 41, and the output end of reduction mechanism body 41 is connected to the second end of steering shaft 3. This configuration enables the transmission connection between the output shaft of motor 1 and steering shaft 3, and also achieves speed reduction and torque increase to simulate the feel of driving.

[0046] As an alternative, the output shaft of motor 1 is connected to the input end of the reduction mechanism body 41, the output end of the reduction mechanism body 41 is connected to the input end of the drive shaft 42, and the output end of the drive shaft 42 is connected to the second end of the steering shaft 3. This also achieves a drive connection between the output shaft of motor 1 and the steering shaft 3, and enables speed reduction and torque increase to simulate the feel of the steering wheel.

[0047] Specifically, along the axial direction of the column 2, an installation space is formed inside the column 2 by shortening the axial length of the steering shaft 3 located inside the column 2 and / or shortening the axial length of the transmission shaft 42. The installation space is used to accommodate the connection structure for the transmission connection between the output shaft of the motor 1 and the input end of the reduction mechanism 4, as well as the reduction mechanism body 41.

[0048] In this embodiment, as Figure 2 As shown, preferably, the axial length of the steering shaft 3 within the column 2 is shortened along the axial direction of the column 2 to form the mounting space for the reduction mechanism 4. In other embodiments, the axial length of the drive shaft 42 is shortened along the axial direction of the column 2 to form the mounting space for the reduction mechanism 4. In other embodiments, the axial length of both the steering shaft 3 and the drive shaft 42 within the column 2 is shortened along the axial direction of the column 2 to form the mounting space for the reduction mechanism 4.

[0049] like Figures 1 to 3 As shown, the following detailed descriptions all take the following example: the output shaft of motor 1 is connected to the input end of transmission shaft 42, the output end of transmission shaft 42 is connected to the input end of reduction mechanism body 41, and the output end of reduction mechanism body 41 is connected to the second end of steering shaft 3.

[0050] Among them, such as Figures 2 to 5As shown, the reduction mechanism body 41 includes a sun gear 411, planet gears 412, a planet carrier, and a gear ring 414 fixedly installed in the tube column 2. The planet gears 412 are rotatably connected to the planet carrier and mesh with both the sun gear 411 and the gear ring 414. The output end of the drive shaft 42 is fixedly connected to the axle of the sun gear 411, and the planet carrier is fixedly connected to the steering shaft 3. This arrangement enables speed reduction and torque increase. Specifically, during the rotation of the drive shaft 42 around its own central axis, it drives the sun gear 411 to rotate around its own central axis. The sun gear 411 meshes with the planet gears 412, and the planet gears 412 mesh with the gear ring 414, thereby driving the planet carrier to rotate around the central axis of the sun gear 411, which in turn drives the steering shaft 3 to rotate around its own central axis.

[0051] Optionally, such as Figure 4 and Figure 5 As shown, the planetary carrier includes a first sub-planetary carrier 4131 and a second sub-planetary carrier 4132 connected to each other. Both the first sub-planetary carrier 4131 and the second sub-planetary carrier 4132 are rotatably connected to planet gears 412, and the planet gears 412 are located between the first sub-planetary carrier 4131 and the second sub-planetary carrier 4132. The first sub-planetary carrier 4131 is rotatably connected to the inner circumference of the gear ring 414 and / or the inner circumference of the column 2, and the second sub-planetary carrier 4132 is fixedly connected to the steering shaft 3. By setting the first sub-planetary carrier 4131 to be rotatably connected to the inner circumference of the gear ring 414 and / or the inner circumference of the column 2, the rotational stability and reliability of the planetary carrier can be improved, thereby improving the simulated feel.

[0052] In this embodiment, as Figure 4 and Figure 5 As shown, an exemplary configuration is provided in which the first sub-planet carrier 4131 is rotatably connected to the inner circumference of the gear ring 414. Specifically, the gear ring 414 includes a gear ring portion and a rotating connecting portion connected axially. The gear ring portion meshes with the planet gear 412, and the first sub-planet carrier 4131 is rotatably connected to the inner circumference of the rotating connecting portion. This configuration offers high integration and facilitates the assembly of the reduction mechanism 4 onto the column 2. Further, the first sub-planet carrier 4131 is rotatably connected to the inner circumference of the gear ring 414 via a first bearing 415; the inner ring of the first bearing 415 is fixedly connected to the outer peripheral wall of the first sub-planet carrier 4131, and the outer ring of the first bearing 415 is fixedly connected to the inner peripheral wall of the rotating connecting portion. Alternatively, the outer circumference of the first sub-planet carrier 4131 and the inner circumference of the rotating connecting portion may each have a first annular groove and a first protrusion, with the first protrusion slidably disposed within the first annular groove. In other embodiments, the first sub-planet carrier 4131 is rotatably connected to the inner circumference of the column 2 via a first bearing 415. In other embodiments, the inner circumference of the gear ring 414 and / or the inner circumference of the column 2 are spaced apart from the first subplanet carrier 4131. Etc.

[0053] The specific structure of motor 1 is existing technology, so it will not be described in detail here.

[0054] Example 2

[0055] This embodiment further defines the features based on Embodiment 1:

[0056] like Figures 1 to 3 As shown, the following detailed descriptions all take the following example: the output shaft of motor 1 is connected to the input end of transmission shaft 42, the output end of transmission shaft 42 is connected to the input end of reduction mechanism body 41, and the output end of reduction mechanism body 41 is connected to the second end of steering shaft 3.

[0057] like Figures 1 to 2 As shown, the drive shaft 42 includes an input shaft 421 and an intermediate shaft 422. The input shaft 421 and the intermediate shaft 422 are slidably connected axially, and the input shaft 421 can drive the intermediate shaft 422 to rotate coaxially. The output shaft of the motor 1 is drivenly connected to the input shaft 421. The intermediate shaft 422 is also drivenly connected to the input end of the reduction mechanism body 41. This configuration enables the output shaft of the motor 1 to be drivenly connected to the input end of the reduction mechanism body 41 via the drive shaft 42. Furthermore, by setting the input shaft 421 and the intermediate shaft 422 to be slidably connected axially, the driver can adjust the position of the steering wheel in the vehicle to meet their driving needs, effectively improving the driver's driving comfort and safety. Specifically, during the adjustment of the steering wheel position, the intermediate shaft 422 simultaneously slides axially relative to the input shaft 421 to increase or decrease the axial length of the drive shaft 42. Specifically, the intermediate shaft 422 is connected to the sun gear 411 via a gear-shaft transmission. As the intermediate shaft 422 rotates around its own central axis, it drives the sun gear 411 to rotate around its own central axis. The sun gear 411 meshes with the planet gear 412, and the planet gear 412 meshes with the gear ring 414, thereby driving the planet carrier to rotate around the central axis of the sun gear 411, which in turn drives the steering shaft 3 to rotate around its own central axis.

[0058] In this embodiment, the installation space is formed by shortening the axial length of the steering shaft 3 within the column 2, preferably along the axial direction of the column 2. This effectively increases the sliding travel of the intermediate shaft 422 relative to the input shaft 421 relative to the shortened axial length of the drive shaft 42, thereby further increasing the adjustment range of the steering wheel position and further improving the driver's driving comfort and safety.

[0059] Specifically, one of the intermediate shaft 422 and the input shaft 421 is provided with a first groove extending axially, and the other is provided with a sliding insertion part, which is slidably inserted into the first groove axially; one of the inner peripheral wall of the first groove and the outer peripheral wall of the sliding insertion part is provided with a keyway extending axially, and the other is provided with a key, which engages with the keyway. This enables the input shaft 421 and the intermediate shaft 422 to be slidably connected axially, and the input shaft 421 can drive the intermediate shaft 422 to rotate coaxially.

[0060] In this embodiment, the intermediate shaft 422 is provided with a first groove extending axially, and the inner peripheral wall of the first groove is recessed with a keyway; the input shaft 421 is provided with a sliding insertion part, and the sliding insertion part is a spline shaft. In other embodiments, the intermediate shaft 422 is provided with a sliding insertion part, and the sliding insertion part is a spline shaft; the input shaft 421 is provided with a first groove extending axially, and the inner peripheral wall of the first groove is recessed with a keyway.

[0061] Specifically, the connection methods for the transmission connection between the output shaft of motor 1 and the input shaft 421 include, but are not limited to, using a coupling, using bolts and nuts, or welding.

[0062] Specifically, the connection methods for the fixed connection between the intermediate shaft 422 and the sun gear 411 include, but are not limited to, using a coupling, using bolts and nuts, or welding.

[0063] Furthermore, such as Figure 1 and Figure 2 As shown, the drive column 2 includes a first drive column 21 and a second drive column 22. The first drive column 21 is fixedly connected to the housing of the motor 1 and slidably connected to the second drive column 22. The first end of the steering shaft 3 extends out of the second drive column 22. The reduction mechanism body 41 is disposed inside the second drive column 22. That is, the gear ring 414 is fixedly disposed inside the second drive column 22. This ensures that the intermediate shaft 422 can slide axially relative to the input shaft 421 to increase or decrease the axial length of the transmission shaft 42. Specifically, during the adjustment of the steering wheel's position, the intermediate shaft 422 slides axially relative to the input shaft 421, and the second drive column 22 slides axially relative to the first drive column 21. It can be understood that the connection structure for the transmission connection between the output shaft of the motor 1 and the input shaft 421 is located inside the first drive column 21.

[0064] Specifically, one of the first tubing 21 and the second tubing 22 is provided with a second groove extending axially, and the other is slidably inserted into the second groove axially. This allows the first tubing 21 and the second tubing 22 to be slidably connected. In this embodiment, the first tubing 21 is provided with a second groove, and the second tubing 22 is partially slidably inserted into the first tubing 21 axially.

[0065] Specifically, the second tubing string 22 is an integral tubing string; or, as... Figure 1 and Figure 2 As shown, the second tubular column 22 includes at least two first sub-tubular columns 221 that are fixedly connected in sequence along the axial direction. In this embodiment, the second tubular column 22 is exemplaryly configured to include two first sub-tubular columns 221 that are fixedly connected in sequence along the axial direction. The connection method between any two adjacent first sub-tubular columns 221 includes, but is not limited to, threaded connection, bolted connection, or welding.

[0066] Specifically, such as Figure 1 and Figure 2 As shown, along the axial direction of the first tube column 21, the first tube column 21 is fixedly connected to the end face of the motor 1 housing near the first tube column 21. The methods by which the first tube column 21 is fixedly connected to the end face of the motor 1 housing near the first tube column 21 include, but are not limited to, threaded connection, bolted connection, welding, or integral molding.

[0067] Specifically, the first sub-planet carrier 4131 is rotatably connected to the inner circumference of the gear ring 414 and / or the inner circumference of the tube post 2, that is, the first sub-planet carrier 4131 is rotatably connected to the inner circumference of the gear ring 414 and / or the inner circumference of the second tube post 22.

[0068] It is understandable that, such as Figures 1 to 3 As shown, the output shaft, input shaft 421, intermediate shaft 422, steering shaft 3, first column 21 and second column 22 of motor 1 are all arranged on the same axis.

[0069] Optionally, such as Figure 2 and Figure 3 As shown, one end of one of the input shaft 421 and the intermediate shaft 422 is fitted onto the outer circumference of the other. The one of the input shaft 421 and the intermediate shaft 422 fitted onto the outer circumference is rotatably connected to the inner circumference of the first column 21 and / or the inner circumference of the second column 22; and / or, the outer circumference of the steering shaft 3 is rotatably connected to the inner circumference of the second column 22. The rotatable connection of the one of the input shaft 421 and the intermediate shaft 422 fitted onto the outer circumference to the inner circumference of the first column 21 and / or the inner circumference of the second column 22 can improve the stability and reliability of the synchronous rotation of the input shaft 421 and the intermediate shaft 422 around their own central axis; the rotatable connection of the outer circumference of the steering shaft 3 to the inner circumference of the second column 22 can improve the stability and reliability of the steering shaft 3 rotating around its own central axis.

[0070] In this embodiment, as Figure 2 and Figure 3 As shown, preferably, one of the input shaft 421 and the intermediate shaft 422, which is sleeved on the outer periphery, is rotatably connected to the inner periphery of the second column 22, and the outer periphery of the steering shaft 3 is rotatably connected to the inner periphery of the second column 22. This improves the working performance of the steering feel simulation device.

[0071] In this embodiment, as Figure 2 and Figure 3 As shown, one of the input shafts 421 and intermediate shafts 422, which is sleeved on the outer periphery, is rotatably connected to the inner periphery of the second column 22 via a second bearing 43. Specifically, the outer peripheral wall of the input shaft 421 and intermediate shaft 422 sleeved on the outer periphery is fixedly connected to the inner ring of the second bearing 43, and the inner peripheral wall of the second column 22 is fixedly connected to the outer ring of the second bearing 43. In other embodiments, one of the input shafts 421 and intermediate shafts 422 sleeved on the outer periphery, and the second column 22, have a second annular groove, and the other has a second protrusion, which is slidably disposed within the annular groove.

[0072] In this embodiment, as Figure 2 and Figure 3 As shown, the outer periphery of the steering shaft 3 is rotatably connected to the inner periphery of the second column 22 via a third bearing 44. Specifically, the outer peripheral wall of the steering shaft 3 is fixedly connected to the inner ring of the third bearing 44, and the inner peripheral wall of the second column 22 is fixedly connected to the outer ring of the third bearing 44. In other embodiments, one of the outer periphery of the steering shaft 3 and the inner periphery of the second column 22 is provided with a third annular groove, and the other is provided with a third protrusion, the third protrusion being slidably disposed within the annular groove.

[0073] Optionally, such as Figure 2 and Figure 3 As shown, the input shaft 421 is provided with a first axial sliding limit portion 4211, and the intermediate shaft 422 can abut against the first axial sliding limit portion 4211 along the axial direction; and / or, as Figure 2 As shown, the intermediate shaft 422 is provided with a second axial sliding limit part 4221, and the input shaft 421 can abut against the second axial sliding limit part 4221 along the axial direction; and / or, the first tube column 21 is provided with a third axial sliding limit part, and the second tube column 22 can abut against the third axial sliding limit part along the axial direction; and / or, the second tube column 22 is provided with a fourth axial sliding limit part, and the first tube column 21 can abut against the fourth axial sliding limit part along the axial direction. This arrangement limits the axial sliding stroke of the intermediate shaft 422.

[0074] In this embodiment, as Figure 2 and Figure 3As shown, the input shaft 421 preferably has a first axial sliding limit portion 4211, the intermediate shaft 422 has a second axial sliding limit portion 4221, and the first column 21 has a third axial sliding limit portion. Further, in this embodiment, the first axial sliding limit portion 4211 is a first limiting protrusion protruding from the outer peripheral wall of the input shaft 421, the second axial sliding limit portion 4221 is the inner bottom wall of the first groove, and the third axial limiting portion is a second limiting protrusion protruding from the inner peripheral wall of the first column 21. This configuration effectively limits the axial sliding stroke of the intermediate shaft 422, prevents the intermediate shaft 422 from detaching from the input shaft 421 axially, effectively prevents the second column 22 from detaching from the first column 21 axially, and simplifies the structure and weight of the intermediate shaft 422.

[0075] Example 3

[0076] This embodiment further defines the features based on Embodiment 1:

[0077] The drive shaft includes a connecting shaft (not shown in the figure). The output shaft of motor 1 is axially connected to one end of the connecting shaft, and the other end of the connecting shaft is axially connected to the axle of the sun gear 411. This also allows the output shaft of motor 1 to be axially connected to the input end of the reduction mechanism 4. It is understood that this configuration fixes the position of the steering wheel within the vehicle.

[0078] Specifically, the connection methods for the transmission connection between the output shaft of motor 1 and the connecting shaft include, but are not limited to, coupling connection, bolt connection, or welding.

[0079] Specifically, the connection methods for the axle drive connection between the connecting shaft and the sun gear 411 include, but are not limited to, coupling connection, bolt connection, or welding.

[0080] It is understandable that the connecting shaft and steering shaft 3 are set as coaxial lines.

[0081] Furthermore, the column 2 includes a connecting column (not shown in the figure), one end of which is fixedly connected to the housing of the motor 1 along the axial direction, the first end of the steering shaft 3 extends out of the connecting column, and the gear ring 414 is fixedly disposed inside the connecting column.

[0082] Specifically, along the axial direction of the connecting tube, the connecting tube is fixedly connected to the end face of the motor 1 housing near the connecting tube. The fixed connection between the connecting tube and the end face of the motor 1 housing near the connecting tube can be made by means including but not limited to threaded connection, bolted connection, welding, or integral molding.

[0083] Specifically, the connecting column is a single-piece column; or, the connecting column includes at least two second sub-columns that are fixedly connected sequentially along the axial direction. The connection method between any two adjacent second sub-columns includes, but is not limited to, threaded connection, bolted connection, or welding.

[0084] Specifically, the first sub-planet carrier 4131 is rotatably connected to the inner circumference of the gear ring 414 and / or the inner circumference of the connecting column 2, that is, the first sub-planet carrier 4131 is rotatably connected to the inner circumference of the gear ring 414 and / or the inner circumference of the connecting column.

[0085] Example 4

[0086] This embodiment provides a steering system, which includes the steering feel simulation device described in Embodiment 1; or, the steering system includes the steering feel simulation device described in Embodiment 2; or, the steering system includes the steering feel simulation device described in Embodiment 3. By using the steering feel simulation device described in Embodiment 1, Embodiment 2, or Embodiment 3, the axial length of the steering feel simulation device can be effectively reduced, the space occupied by the steering feel simulation device can be reduced, and the spatial arrangement of the steering system on the vehicle can be facilitated.

[0087] Specifically, the steering system also includes a steering wheel, and the first end of the steering shaft 3 is drive-connected to the steering wheel to simulate steering feel. Specifically, when the steering system includes the steering feel simulation device described in Embodiment 2, the position of the steering wheel within the vehicle can be adjusted; when the steering system includes the steering feel simulation device described in Embodiment 3, the position of the steering wheel within the vehicle cannot be adjusted.

[0088] Specifically, the steering system also includes a controller and a torque sensor for monitoring the real-time torque of the steering shaft 3; both the torque sensor and the motor 1 are communicatively connected to the controller. The controller controls the operation of the motor 1 based on the data monitored by the torque sensor, and the motor 1 drives the input shaft 421 to rotate around its own central axis, so that the steering shaft 3 rotates around its own central axis, providing a simulated feel.

[0089] Example 5

[0090] This embodiment provides a vehicle that includes the steering feel simulation device described in Embodiment 1; or, the vehicle includes the steering feel simulation device described in Embodiment 2; or, the vehicle includes the steering feel simulation device described in Embodiment 3; or, the vehicle includes the steering system of Embodiment 4. This facilitates vehicle assembly and manufacturing.

[0091] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A steering feel simulation device, comprising a motor (1), a column (2), a steering shaft (3), and a reduction mechanism (4); the column (2) is sleeved on the outer periphery of the steering shaft (3), and the first end of the steering shaft (3) extends out of the column (2); characterized in that: The end of the tubular column (2) that is axially away from the steering shaft (3) is fixedly connected to the housing of the motor (1); The output shaft of the motor (1) extends into the tube column (2), and the reduction mechanism (4) is disposed in the tube column (2); The output shaft of the motor (1) is connected to the input end of the reduction mechanism (4), and the output end of the reduction mechanism (4) is connected to the second end of the steering shaft (3).

2. The turning sensation simulating apparatus according to claim 1, wherein The deceleration mechanism (4) includes a deceleration mechanism body (41) and a transmission shaft (42); The output shaft of the motor (1) is connected to the input end of the transmission shaft (42), the output end of the transmission shaft (42) is connected to the input end of the reduction mechanism body (41), and the output end of the reduction mechanism body (41) is connected to the second end of the steering shaft (3); or, the output shaft of the motor (1) is connected to the input end of the reduction mechanism body (41), the output end of the reduction mechanism body (41) is connected to the input end of the transmission shaft (42), and the output end of the transmission shaft (42) is connected to the second end of the steering shaft (3).

3. The steering feel simulation device according to claim 2, characterized in that, The transmission shaft (42) includes an input shaft (421) and an intermediate shaft (422). The input shaft (421) and the intermediate shaft (422) are slidably connected along the axial direction, and the input shaft (421) can drive the intermediate shaft (422) to rotate coaxially. The output shaft of the motor (1) is connected to the input shaft (421), and the intermediate shaft (422) is also connected to the input end of the reduction mechanism body (41).

4. The steering feel simulation device according to claim 3, characterized in that, The column (2) includes a first column (21) and a second column (22). The first column (21) is fixedly connected to the housing of the motor (1) and slidably connected to the second column (22). The first end of the steering shaft (3) extends out of the second column (22). The deceleration mechanism body (41) is disposed inside the second column (22).

5. The steering feel simulation device according to claim 4, characterized in that, One end of the input shaft (421) and the intermediate shaft (422) is sleeved on the outer circumference of the other, and the one of the input shaft (421) and the intermediate shaft (422) sleeved on the outer circumference is rotatably connected to the inner circumference of the first column (21) and / or the inner circumference of the second column (22); and / or, the outer circumference of the steering shaft (3) is rotatably connected to the inner circumference of the second column (22).

6. The steering feel simulation device according to claim 4, characterized in that, The input shaft (421) is provided with a first axial sliding limit part (4211), and the intermediate shaft (422) can abut against the first axial sliding limit part (4211) axially; and / or, the intermediate shaft (422) is provided with a second axial sliding limit part (4221), and the input shaft (421) can abut against the second axial sliding limit part (4221) axially; and / or, the first tube column (21) is provided with a third axial sliding limit part, and the second tube column (22) can abut against the third axial sliding limit part axially; and / or, the second tube column (22) is provided with a fourth axial sliding limit part, and the first tube column (21) can abut against the fourth axial sliding limit part axially.

7. The steering feel simulation device according to any one of claims 2-6, characterized in that, The main body (41) of the reduction mechanism includes a sun gear (411), planet gears (412), a planet carrier, and a gear ring (414) fixedly installed in the column (2). The planet gears (412) are rotatably connected to the planet carrier and mesh with both the sun gear (411) and the gear ring (414). The output end of the drive shaft (42) is fixedly connected to the axle of the sun gear (411), and the planet carrier is fixedly connected to the steering shaft (3).

8. The steering feel simulation device according to claim 7, characterized in that, The planetary carrier includes a first sub-planetary carrier (4131) and a second sub-planetary carrier (4132) connected to each other. Both the first sub-planetary carrier (4131) and the second sub-planetary carrier (4132) are rotatably connected to the planetary gear (412), and the planetary gear (412) is located between the first sub-planetary carrier (4131) and the second sub-planetary carrier (4132). The first sub-planetary carrier (4131) is rotatably connected to the inner circumference of the gear ring (414) and / or the inner circumference of the column (2), and the second sub-planetary carrier (4132) is fixedly connected to the steering shaft (3).

9. A steering system, characterized in that, Includes the steering feel simulation device according to any one of claims 1-8.

10. A vehicle, characterized in that, Includes the steering feel simulation device according to any one of claims 1-8 or the steering system according to claim 9.

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