CN217374636U - Steering column assembly, steer-by-wire system and vehicle - Google Patents
Steering column assembly, steer-by-wire system and vehicle Download PDFInfo
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- CN217374636U CN217374636U CN202221559553.7U CN202221559553U CN217374636U CN 217374636 U CN217374636 U CN 217374636U CN 202221559553 U CN202221559553 U CN 202221559553U CN 217374636 U CN217374636 U CN 217374636U
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Abstract
The present disclosure relates to a steering column assembly, steer-by-wire system and vehicle, the steering column assembly includes: a steering column for fixed connection coaxially with a steering wheel, an actuating mechanism for outputting torque to the steering column, and a planetary transmission arranged to transmit torque between the steering column and the actuating mechanism, the planetary transmission comprising: the sun gear is coaxially and fixedly connected with the steering column, a rotating shaft of the sun gear is coaxially and fixedly connected with the output end of the actuating mechanism, the gear ring is coaxially arranged with the sun gear, the planet gear is meshed between the sun gear and the gear ring, and the planet carrier is connected with the rotating shaft of the planet gear, wherein one of the gear ring and the planet carrier is coaxially and fixedly connected with the steering column. Through the technical scheme, the steering column assembly, the steer-by-wire system and the vehicle provided by the disclosure can solve the technical problem that the steering column is large in size and not easy to be used in compact vehicle models.
Description
Technical Field
The present disclosure relates to the field of vehicle technology, and in particular, to a steering column assembly, a steer-by-wire system, and a vehicle.
Background
In a steering system of the related art, a steering column located in a cab and a steering gear located on a chassis are mechanically connected by adopting an intermediate shaft, the steering column is mostly in a traditional C-EPS steering column structure, wherein a worm and gear speed reducing mechanism is adopted as the speed reducing mechanism, and the axis of a motor and a turbine are arranged in a non-coaxial mode. The steering column, which is composed of the motor, the worm wheel and the worm, has a large size and is not easy to be used in a vehicle with compact arrangement space.
SUMMERY OF THE UTILITY MODEL
To overcome the problems in the related art, the present disclosure provides a steering column assembly, a steer-by-wire system, and a vehicle.
According to a first aspect of embodiments of the present disclosure, there is provided a steering column assembly comprising: a steering column for fixed connection coaxially with a steering wheel, an actuating mechanism for outputting torque to the steering column, and a planetary transmission arranged to transmit the torque between the steering column and the actuating mechanism, the planetary transmission comprising: the sun gear is coaxially arranged with the steering column, a rotating shaft of the sun gear is coaxially and fixedly connected with an output end of the actuating mechanism, the gear ring is coaxially arranged with the sun gear, the planet gear is meshed between the sun gear and the gear ring, and the planet carrier is connected with the rotating shaft of the planet gear, wherein one of the gear ring and the planet carrier is coaxially and fixedly connected with the steering column.
Optionally, the steering column includes a steering shaft and a housing sleeved outside the steering shaft, the steering shaft can rotate relative to the housing, and a first end of the steering shaft is used for being coaxially and fixedly connected with the steering wheel.
Optionally, the planet carrier is fixedly connected coaxially with a second end of the steering shaft opposite to the first end, and the ring gear is fixedly connected with the housing.
Optionally, a first output shaft coaxial with the steering shaft is arranged on the planet carrier, and the first output shaft is fixedly connected with the second end coaxially.
Optionally, the ring gear is fixedly connected coaxially with a second end of the steering shaft opposite to the first end, and the carrier is fixedly connected with the housing.
Optionally, a second output shaft is coaxially disposed on the gear ring, and the second output shaft is coaxially and fixedly connected with the second end.
Optionally, the actuating mechanism includes a motor, the motor includes a rotor and a stator, the sun gear is fixedly connected and coaxially disposed with the rotor, and the ring gear or the planet carrier is fixedly connected with the stator.
Optionally, the steering column assembly further comprises an angle signal sensor or a torque signal sensor, a collapsing mechanism, and a column adjusting mechanism.
According to a second aspect of the embodiments of the present disclosure, there is provided a steer-by-wire system including: the steering column is connected with the steering wheel, the controller is connected with the actuating mechanism, the steering gear is used for driving wheels to steer, and the steering gear is in communication connection with the steering column assembly.
According to a third aspect of the embodiments of the present disclosure, there is provided a vehicle including the steer-by-wire system in the foregoing technical solution.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in the steering column assembly provided by the disclosure, the planetary transmission mechanism and the steering column are coaxially arranged, so that the structure is compact. In addition, because the planetary transmission mechanism has the advantages of more meshing teeth, smooth operation and low noise, compared with other speed reduction transmission mechanisms with the same speed reduction ratio, the planetary transmission mechanism has a more compact structure and a smaller volume, and compared with other speed reduction transmission mechanisms with the same size, the planetary transmission mechanism has a larger speed reduction ratio and a smaller specification of an optional actuating mechanism, so that the overall size of the steering column assembly is favorably reduced, and the steering column assembly is suitable for being arranged in a vehicle with smaller space; the steer-by-wire system provided by the present disclosure has the same technical effects as the steering column assembly in the above technical solution, and is not described herein in detail in order to avoid unnecessary repetition; the vehicle provided by the present disclosure has the same technical effects as the steer-by-wire system in the above technical solutions, and is not described herein in detail to avoid unnecessary repetition.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram of a steering column assembly according to an exemplary embodiment.
FIG. 2 is a schematic diagram of a steering column assembly according to another exemplary embodiment.
Fig. 3 is a schematic structural diagram illustrating a steer-by-wire system according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the present disclosure, the use of directional terms such as "inner and outer" means inner and outer relative to the profile of the corresponding component part itself, unless otherwise specified. The terms "first," "second," and the like, as used in this disclosure, are intended to distinguish one element from another, and not necessarily for sequential or importance.
According to a first aspect of the embodiments of the present disclosure, there is provided a steering column assembly, which, referring to fig. 1 to 3, may include a steering column 1, an actuating mechanism 3 and a planetary gear mechanism 2, wherein the steering column 1 is configured to be coaxially and fixedly connected with a steering wheel 4, the actuating mechanism 3 is configured to output a torque to the steering column 1, specifically, the actuating mechanism 3 outputs a required torque to the steering column 1 according to a command of a controller 5 described below so that the torque can be fed back to a driver through the steering wheel 4, the planetary gear mechanism 2 may be configured to transmit the torque between the steering column 1 and the actuating mechanism 3, the planetary gear mechanism 2 may be coaxially disposed with the steering column 1, specifically, the planetary gear mechanism 2 may include a sun gear 21, a ring gear 22, a planet gear 23 and a planet carrier 24, wherein the sun gear 21 is coaxially disposed with the steering column 1, the rotation shaft of the sun gear 21 is fixedly connected coaxially with the output of the actuating mechanism 3, so that torque is input to the planetary transmission mechanism 2 through the sun gear 21, the ring gear 22 is arranged coaxially with the sun gear 21, the planetary gears 23 are engaged between the sun gear 21 and the ring gear 22, and the planet carrier 24 is connected with the rotation shaft of the planetary gears 23, wherein one of the ring gear 22 and the planet carrier 24 is fixedly connected coaxially with the steering column 1, so as to output the torque to the steering column 1.
Through the technical scheme, in the steering column assembly provided by the disclosure, the planetary transmission mechanism 2 and the steering column 1 are coaxially arranged, and the structure is compact. In addition, because the planetary transmission mechanism 2 has the advantages of large number of meshing teeth, smooth operation and low noise, compared with other speed reduction transmission mechanisms with the same speed reduction ratio, the structure of the planetary transmission mechanism 2 is more compact and the volume is smaller, compared with other speed reduction transmission mechanisms with the same size, the speed reduction ratio of the planetary transmission mechanism 2 is larger, the specification of the selectable actuating mechanism 3 is smaller, the overall size of the steering column assembly is favorably reduced, and the steering column assembly is suitable for being arranged in a vehicle with smaller space.
Referring to fig. 1 and 2, the steering column 1 may include a steering shaft 11 and a housing 12 disposed outside the steering shaft 11, the steering shaft 11 and the planetary gear mechanism 2 may be coaxially disposed, the steering shaft 11 is rotatable around a central axis relative to the housing 12, a first end of the steering shaft 11 is configured to be coaxially and fixedly connected to the steering wheel 4, and a second end of the steering shaft 11 opposite to the first end is configured to be connected to the planetary gear mechanism 2.
Referring to fig. 1, in an exemplary embodiment of the present disclosure, a planet carrier 24 may be used as an output end of the planetary gear mechanism 2, the planet carrier 24 may be fixedly connected coaxially with the second end of the steering shaft 11, and the ring gear 22 may be fixedly connected with the housing 12, so that the ring gear 22 is kept stationary with respect to the sun gear 21 and the planet carrier 24. At this time, the reduction ratio i of the planetary gear mechanism 2 is 1+ Z ring /Z sun Wherein Z is ring Number of teeth, Z, of ring gear 22 sun The number of teeth of the sun gear 21.
In order to enable the carrier 24 to be fixedly connected coaxially with the steering shaft 11, as shown in fig. 1, the carrier 24 may be provided with an output shaft 25 coaxial with the steering shaft 11, and the output shaft 25 may be fixedly connected coaxially with the second end of the steering shaft 11.
Referring to fig. 2, in another exemplary embodiment of the present disclosure, the ring gear 22 may be used as an output of the planetary gear mechanism 2, the ring gear 22 may be fixedly connected coaxially with the second end of the steering shaft 11, and the planet carrier 24 may be fixedly connected with the housing 12, such that the planet carrier 24 is kept stationary relative to the sun gear 21 and the planet carrier 24. At this time, the reduction ratio i-Z of the planetary transmission mechanism 2 is set to ring /Z sun Wherein Z is ring Number of teeth, Z, of ring gear 22 sun The number of teeth of the sun gear 21.
In order to fixedly connect the ring gear 22 coaxially with the steering shaft 11, referring to fig. 2, an output shaft 25 may be coaxially provided on the ring gear 22, the output shaft 25 may also be coaxially with the steering shaft 11, and the output shaft 25 may be fixedly connected coaxially with the second end of the steering shaft 11.
Referring to fig. 1 and 2, the actuating mechanism 3 may include an electric motor, the electric motor may include a rotor 31 and a stator 32, the sun gear 21 may be fixedly connected and coaxially disposed with the rotor 31, that is, the rotor 31, the planetary gear mechanism 2, and the steering column 1 may be coaxially disposed, and the ring gear 22 or the planet carrier 24 may be fixedly connected with the stator 32 to be stationary with respect to the sun gear 21.
Referring to fig. 1 and 2, the planetary transmission mechanism 2 may include a plurality of planetary wheels 23, and the plurality of planetary wheels 23 may be arranged in an array around the central axis of the sun wheel 21 to improve the transmission smoothness of the planetary transmission mechanism 2.
Furthermore, the steering column assembly may also contain mechanisms and/or components not shown below, such as an angle signal sensor or a torque signal sensor, which may be in communication with the steering gear 6 described below, a collapse mechanism for absorbing energy from collapse, a column adjustment mechanism for adjusting the position of the steering column 1 so that the height and position of the steering wheel 4 can be adapted to drivers of different sizes, and the like.
According to a second aspect of the embodiments of the present disclosure, there is provided a steer-by-wire system, which may include, as shown in fig. 3, a steering wheel 4, a steering column assembly, a controller 5 and a steering gear 6, wherein the steering column assembly may be the steering column assembly in the above technical solution, the steering column 1 may be fixedly connected coaxially with the steering wheel 4, the controller 5 is connected with the actuating mechanism 3 so that the actuating mechanism 3 can output a required torque to the steering column 1 according to a command of the controller 5, the steering gear 6 is used for driving wheel steering, and the steering gear 6 may be connected with the steering column assembly in communication so as to control steering of wheels according to rotation of the steering column assembly.
Through the technical scheme, the steer-by-wire system provided by the disclosure has the same technical effects as the steering column assembly in the technical scheme, and unnecessary repetition is avoided, so that no repeated description is provided herein.
According to a third aspect of the embodiments of the present disclosure, there is provided a vehicle including the steer-by-wire system in the foregoing technical solution.
Through the above technical solution, the vehicle provided by the present disclosure has the same technical effects as the steer-by-wire system in the above technical solution, and is not described herein again in order to avoid unnecessary repetition.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A steering column assembly, comprising:
a steering column for connection with a steering wheel,
an actuating mechanism for outputting torque to the steering column, an
A planetary drive mechanism configured to transfer the torque between the steering column and the actuating mechanism, the planetary drive mechanism comprising:
the sun wheel is coaxially arranged with the steering column, a rotating shaft of the sun wheel is coaxially and fixedly connected with the output end of the actuating mechanism,
a ring gear disposed coaxially with the sun gear,
a planet wheel meshed between the sun wheel and the gear ring, an
A planet carrier connected with the rotating shaft of the planet wheel,
wherein one of the ring gear and the carrier is fixedly connected coaxially with the steering column.
2. A steering column assembly according to claim 1 in which the steering column comprises a steering shaft and a housing surrounding the steering shaft, the steering shaft being rotatable relative to the housing, the first end of the steering shaft being adapted to be fixedly connected coaxially with the steering wheel.
3. A steering column assembly according to claim 2 in which the planet carrier is fixedly connected coaxially with a second end of the steering shaft opposite the first end, and the ring gear is fixedly connected with the housing.
4. A steering column assembly according to claim 3 in which a first output shaft is provided on the planet carrier coaxially with the steering shaft, the first output shaft being fixedly connected coaxially with the second end.
5. The steering column assembly of claim 2, wherein the ring gear is fixedly connected coaxially with a second end of the steering shaft opposite the first end, and the planet carrier is fixedly connected with the housing.
6. A steering column assembly according to claim 5 in which a second output shaft is coaxially disposed on the ring gear and fixedly connected coaxially with the second end.
7. The steering column assembly of claim 1, wherein the actuation mechanism comprises an electric motor including a rotor and a stator, the sun gear being fixedly coupled to and coaxially disposed with the rotor, and the ring gear or the planet carrier being fixedly coupled to the stator.
8. The steering column assembly of claim 1, further comprising an angle or torque signal sensor, a collapse mechanism, a column adjustment mechanism.
9. A steer-by-wire system, comprising:
a steering wheel is arranged on the steering wheel,
the steering column assembly of any of claims 1-8, the steering column coupled with the steering wheel,
a controller connected to the actuating mechanism,
and the steering gear is used for driving wheels to steer and is in communication connection with the steering column assembly.
10. A vehicle characterized by comprising the steer-by-wire system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221559553.7U CN217374636U (en) | 2022-06-20 | 2022-06-20 | Steering column assembly, steer-by-wire system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221559553.7U CN217374636U (en) | 2022-06-20 | 2022-06-20 | Steering column assembly, steer-by-wire system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217374636U true CN217374636U (en) | 2022-09-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221559553.7U Active CN217374636U (en) | 2022-06-20 | 2022-06-20 | Steering column assembly, steer-by-wire system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217374636U (en) |
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2022
- 2022-06-20 CN CN202221559553.7U patent/CN217374636U/en active Active
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