Steering column for motor vehicles

By introducing threshold torque and torque lock-up connections into the steering system, the problem of sensor connection breakage under overload or failure conditions is solved, ensuring the continuity of sensor function and improving the reliability and safety of the system.

CN116981611BActive Publication Date: 2026-05-26THYSSENKRUPP PRESTA AG +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THYSSENKRUPP PRESTA AG
Filing Date
2022-02-15
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing steering systems, the connection between the steering shaft and the rotary sensor is prone to breakage under overload or malfunction conditions, leading to steering system failure and affecting the reliability and safety of the vehicle.

Method used

Design a steering system in which a rotation limiter has a threshold torque that allows the steering shaft to rotate beyond an end stop when the threshold torque is exceeded, and the steering shaft is connected to a rotary sensor via a torque-locking connection to ensure the continuity of sensor function under overload or fault conditions.

Benefits of technology

Under overload or fault conditions, the connection between the steering shaft and the rotary sensor remains stable, ensuring the continuity of sensor function and improving the reliability and safety of the steering system.

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Abstract

The present invention relates to a steering column (1) for a motor vehicle, the steering column (1) comprising: a steering shaft (23) mounted to be rotatable about a longitudinal axis (L) of the steering shaft (23) relative to a carrier unit (3); a rotation limiter (5) having an end stop for limiting rotation of the steering shaft (23); and a rotary sensor (7) coupled to the steering shaft (23) by means of a torque-locking connection. To allow for greater operational reliability, the present invention proposes that the rotation limiter (5) has a threshold torque, and that, if said threshold torque is exceeded, the steering shaft (23) is allowed to rotate beyond the end stop, the threshold torque being less than the maximum transmission torque of the connection between the steering shaft (23) and the rotary sensor (7).
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