CN-121973844-A - Steering column adjusting device and vehicle

CN121973844ACN 121973844 ACN121973844 ACN 121973844ACN-121973844-A

Abstract

The invention discloses a steering column adjusting device and a vehicle, the device comprises a supporting component, a telescopic component, a driving unit and a motion transmission and restraint mechanism. When the intelligent control system of the vehicle sends out the dip angle adjustment instruction, when the linear driving output end of the driving unit is driven to generate displacement, the telescopic assembly is driven to slide relative to the supporting assembly, so that the axial position adjustment of the steering column is realized, and the linear driving output end synchronously drives the driving unit, the supporting assembly and the telescopic assembly to rotate around the rotating connection point of the supporting assembly relative to the vehicle body under the restraint of the motion transmission and restraint mechanism, so that the dip angle adjustment of the steering column is realized. The device not only realizes the rapid and accurate position reconstruction of the steering column in various driving modes, meets the requirements of automatic driving storage, active safety avoidance and the like, and promotes the active safety performance and man-machine interaction experience of the vehicle in the intelligent networking environment.

Inventors

Zuo Yongxian
ZHANG PENG
Ma Wuwen
Wang Lidao
MU HUIQIU

Assignees

比亚迪股份有限公司
汕尾比亚迪实业有限公司

Dates

Publication Date: 20260505
Application Date: 20260309

Claims (10)

1. A steering column adjustment device, characterized in that the device constitutes an adjustable body portion of a steering column and comprises: A support assembly configured to be rotatably coupled with respect to the vehicle body; the telescopic assembly is sleeved with the supporting assembly and is configured to slide relative to the supporting assembly along the axis direction of the telescopic assembly; the driving unit comprises a driving source and a linear driving output end driven by the driving source, the driving source is connected with the supporting component, and the linear driving output end is in driving connection with the telescopic component; The linear driving output end is provided with at least one hinging point fixed relative to the position of the vehicle body, a driving connecting point connected with the linear driving output end or a part synchronously moving with the linear driving output end is configured, the linear driving output end is configured to drive the telescopic assembly to slide relative to the supporting assembly when the linear driving output end generates displacement, so that the axial position of the steering column is adjusted, the movement of the linear driving output end is geometrically constrained by the movement transmitting and restraining mechanism, and the driving unit, the supporting assembly and the telescopic assembly are driven to rotate around the rotating connecting point of the supporting assembly relative to the vehicle body, so that the inclination angle adjustment of the steering column relative to the vehicle body is realized.
2. A steering column adjustment device according to claim 1, wherein the motion transmitting and restraining mechanism is a link transmission mechanism configured as any one of a single link member, a link group made up of a plurality of link members, or a rigid frame structure having a plurality of connection fulcrums.
3. The steering column adjustment device according to claim 2, wherein the link transmission mechanism is configured as a single link member including two oppositely disposed fixed arms and an intermediate arm fixedly connected between the two fixed arms, the distal ends of the two fixed arms being respectively configured as the at least one hinge point and being respectively hinged to the vehicle body or both side brackets of the vehicle body such that the single link member can swing with respect to the vehicle body; The linear driving output end is hinged to the middle arm, or a transverse shaft is supported between the two fixed arms, the linear driving output end is hinged to the transverse shaft, and when the linear driving output end moves, the single connecting rod component is pushed to rotate around the hinge axis of the two fixed arms through relative rotation of the hinge position.
4. The steering column adjustment device according to claim 2, wherein the link transmission mechanism includes a main link member and a pair of auxiliary link members; The main connecting rod component comprises two fixed arms which are oppositely arranged and an intermediate arm which is fixedly connected between the two fixed arms, wherein the tail ends of the two fixed arms of the main connecting rod component are respectively constructed into first hinge points and are respectively hinged to two sides of the supporting component; The pair of auxiliary connecting rods are respectively positioned on two side brackets of the vehicle body, one end of each auxiliary connecting rod component is constructed to be a second hinge point and fixedly hinged on the vehicle body or a corresponding side bracket of the vehicle body, and the other end of each auxiliary connecting rod component is constructed to be a third hinge point and hinged on the main connecting rod component, wherein when the linear driving output end moves, the main connecting rod component is driven to move under the constraint of the pair of auxiliary connecting rods, and then the supporting component is driven to perform inclination angle adjustment relative to the vehicle body.
5. A steering column adjustment device according to claim 3 or 4, wherein the support assembly is provided with a guide structure, and the intermediate arm or the transverse shaft hinged to the linear drive output end is in guide fit with the guide structure and slidably restrained in the guide structure; Wherein the direction of movement of the linear drive output is coincident with the direction of extension of the guide structure such that the linear drive output is configured to drive movement of the linkage transmission mechanism only in its axial direction.
6. The steering column adjustment device of claim 1, further comprising a body bracket configured to be fixedly mounted on a body of a vehicle; the rear end part of the supporting component is rotationally connected with the vehicle body bracket to serve as a rotation center of inclination angle adjustment, one end of the motion transmission and restraint mechanism is hinged with the front end part of the vehicle body bracket to form a fixed supporting point relative to the vehicle body, and the other end of the motion transmission and restraint mechanism or a part synchronously moving along with the motion transmission and restraint mechanism is rotationally connected with the linear driving output end to drive the supporting component and the telescopic component to swing around the rotation center under the displacement of the linear driving output end.
7. The steering column adjusting device according to claim 1, wherein the linear driving output end is in driving connection with the telescopic assembly through a connecting bracket, an adjusting hole in the direction perpendicular to the axis of the telescopic assembly is formed in the connecting bracket, and the linear driving output end is slidably arranged in the adjusting hole through a connecting piece in a penetrating manner; The extension length of the adjusting hole is configured to allow the linear driving output end to generate displacement fine adjustment relative to the connecting bracket along the direction perpendicular to the axis of the telescopic assembly in the process of moving along the axial direction of the linear driving output end so as to compensate inclination deviation between the axial direction of the telescopic assembly and the axis of the linear driving output end.
8. A steering column adjustment device according to claim 7, in which the drive source is connected to the support assembly in a hinged manner such that the drive source can rotate relative to the support assembly about the hinge; The driving source swings around the hinge point to adaptively adjust the output axis angle of the driving source when the steering column is subjected to inclination adjustment, and meanwhile, the linear driving output end slides in the adjusting hole to compensate radial position deviation generated by swinging.
9. A steering column adjustment device according to claim 1, characterized in that the drive source is connected to the support assembly in a hinged manner such that the drive source can rotate relative to the support assembly about the hinge, and/or The driving source is connected to the rear end part of the supporting component, the linear driving output end extends out of the front end of the driving source and extends along the axial direction of the telescopic component, and the driving unit is located on one side above or one side below the supporting component.
10. A vehicle comprising a steering wheel and a steering column adjustment device according to any one of claims 1 to 9, the steering wheel being connected to the telescopic assembly.

Description

Steering column adjusting device and vehicle Technical Field The invention relates to the technical field of intelligent network connection automobile technology and active safety control of vehicles, in particular to a steering column adjusting device and a vehicle. More particularly, the invention relates to an adjusting device capable of responding to an intelligent control instruction of a whole vehicle and realizing dynamic reconstruction of the position of a steering mechanism through the whole layout of a driving structure, which is used for optimizing human-computer interaction experience. Background With the evolution of intelligent networking automobile technology, vehicles are gradually provided with L3 level and above automatic driving capability. Among them, the steering column is required to have a capability of performing dynamic position adjustment according to a driving mode (manual/automatic), a driver state, and a collision risk. For example, in the automatic driving mode, the steering wheel needs to retract or change the inclination angle automatically to enlarge the driving space, and in the collision early warning stage, the steering wheel needs to be adjusted to the optimal safe position quickly to match with the airbag deployment. However, the existing steering column adjusting device has significant limitation in application to the above intelligent scene that the driving layout is stiff, usually a dual-motor independent driving system is adopted, one motor is used for driving the telescopic mechanism, the other motor is used for driving the dip angle adjusting mechanism, and two complete driving systems (comprising two motors, two sets of reduction gear sets and corresponding control circuits) are required to be configured. When the steering column needs to be subjected to large-range inclination angle adjustment or telescopic reset according to intelligent instructions, two independent driving systems need more complex wiring harness arrangement and control logic, so that the adjustment speed and accuracy are severely limited, and the requirements of an intelligent system on millisecond response and smoothness cannot be met. The dual motor arrangement results in an overall steering column that is bulky. This not only compresses the deployment space of the intelligent cabin, but also hinders the integration of other intelligent sensors (e.g. driver monitoring cameras, gesture recognition modules). In addition, the conventional device cannot adaptively follow the change in the posture of the steering column during adjustment. Under the intelligent regulation working condition of long-term high frequency, the abrasion of the transmission part is easy to be aggravated and even invalid, and the reliability and the service life of the intelligent driving auxiliary system are influenced. Accordingly, there is a need to develop a steering position adjustment actuator that provides high response, high reliability, and compact safety for intelligent networked automobiles. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the steering column adjusting device, when the intelligent control system of the vehicle sends an adjusting instruction, the single driving unit is matched with the motion transmission and constraint mechanism, so that the axial position adjustment and the inclination angle adjustment of the steering column are synchronously realized, the rapid and accurate position reconstruction of a steering wheel (steering column) in various driving modes is realized, and the man-machine interaction experience in an intelligent network environment is improved. The invention further proposes a vehicle. According to an embodiment of the first aspect of the present invention, the apparatus constitutes an adjustable body portion of a steering column and includes a support assembly configured to be rotatably connected with respect to a vehicle body, a telescopic assembly in telescoping engagement with the support assembly and configured to slide with respect to the support assembly in an axial direction thereof, a drive unit including a drive source and a linear drive output driven by the drive source, the drive source being connected with the support assembly, the linear drive output being in driving connection with the telescopic assembly, a motion transmitting and restraining mechanism having at least one hinge point fixed with respect to a position of the vehicle body and configured with a drive connection point connected with the linear drive output or a member synchronously movable therewith, and configured such that, when displacement of the linear drive output occurs, the telescopic assembly is driven to slide with respect to the support assembly to effect adjustment of an axial position of the steering column, and movement of the linear drive output is constrained by geometr