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Steering wheel unit for generating feedback force on steering wheel of electromechanical steering system

A steering system, steering wheel technology, applied in electric steering mechanism, mechanical steering mechanism, steering control mounted on the car, etc., to achieve the effect of compact structure, reduce current demand, and save structure space

Pending Publication Date: 2021-03-23
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the prior art mentioned above, this solution requires more construction space in the transverse direction with respect to the steering wheel axis

Method used

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  • Steering wheel unit for generating feedback force on steering wheel of electromechanical steering system
  • Steering wheel unit for generating feedback force on steering wheel of electromechanical steering system
  • Steering wheel unit for generating feedback force on steering wheel of electromechanical steering system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] according to figure 1 , an electromechanical steering system for a motor vehicle essentially consists of a steering wheel unit 1 in a cylinder-shaped housing 2 of which a steering wheel shaft 3 is rotatably mounted. A steering wheel 4 for operation by a driver is attached to the distal end of the steering wheel shaft 3 .

[0026] Via an electrical connection 5 , the steering wheel unit 1 is connected by means of an electronic control unit 6 to a steering actuator unit 7 , which in the exemplary embodiment is designed electromechanically. Steering actuator unit 7 is used to convert the steering signal predetermined electrically by steering wheel unit 1 by means of control device 6 into a mechanical adjustment of the steering angle of wheels 8 a and 8 b of axle 9 that can be steered there.

[0027] figure 2 A cross-sectional view of the steering wheel unit 1 taken along a section A-A is shown. Arranged in the middle is a pin 11 of the compensating element 10 , on whic...

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PUM

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Abstract

The invention relates to a steering wheel unit for an electromechanical steering system of a motor vehicle, wherein the steering wheel unit comprises a force generating device for applying a mechanical feedback force to a steering wheel to feed back a current steering and / or driving state to a driver, and a compensation element for generating an additional feedback force depending on the current transverse force acting on the motor vehicle. The force generating device is provided with an internal gear rotating in the same direction as the steering wheel, a first radial spring and a second radial spring, and the first radial spring and the second radial spring are connected with the internal gear and a shell of the steering wheel unit respectively and apply force to the steering wheel through the internal gear. Therefore, a feedback force, which can be generated on the steering wheel, for feeding back a steering state dependent on a wheel steering angle to a driver increases with an increase in the adjustment of the steering wheel deviating from straight travel; the compensation element is connected with a steering shaft through a compensation element pinion and applies additional feedback force to the steering wheel according to the transverse force.

Description

technical field [0001] The invention relates to a steering wheel unit for an electromechanical steering system of a motor vehicle. Furthermore, the invention relates to an electromechanical steering system comprising such a steering wheel unit. Background technique [0002] The field of application of the invention extends to so-called steer-by-wire motor vehicle systems in which there is no direct mechanical coupling between the steering wheel and the steering wheels of the motor vehicle. Instead, the steering angle of the steering wheel and optionally also the rotational speed of the steering wheel and / or the torque exerted on the steering wheel are detected by suitable sensor systems and transmitted in the form of electrical adjustment values ​​to the electromechanical steering wheel actuation A steering wheel actuator unit converts an electrically predetermined turn signal into a mechanical adjustment of the steering angle of the wheels of the steerable axle. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D5/00B62D1/04
CPCB62D5/04B62D5/0403B62D5/006B62D1/04
Inventor M·阿基姆D-G·迪马M-C·科斯塔凯M·科瓦奇A·胡苏M-N·韦莱亚
Owner SCHAEFFLER TECH AG & CO KG
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