Steering Casing Resonance for Haptic Signal Transmission
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Solution Overview
Problem
Existing steering arrangements face complexity in transmitting haptic signals to the steering wheel, particularly due to the need for additional components like slip rings or complex friction mechanisms, which may not be reliable in the long term.
Innovation Solution
The steering spindle's casing unit is used as a resonance box to transmit haptic signals generated by a generating device, such as vibrators or piezoelectric oscillators, directly to the steering spindle and wheel, simplifying the construction and ensuring reliable signal transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If slip rings or twisted wires are used to transmit haptic signals to the steering wheel, then signal transmission is achieved, but device complexity increases
Solution Approach 1:
The patent combines the haptic signal transmission function with the existing steering column structure. The generating device is integrated into the steering column, and the haptic signals are transmitted through the steering spindle and steering wheel assembly that already exist in the vehicle, eliminating the need for separate slip rings or twisted wires dedicated solely to haptic signal transmission.
Solution Approach 2:
The steering column components, particularly the steering spindle and steering wheel assembly, serve dual functions: they transmit mechanical steering movements and simultaneously transmit haptic signals to the driver. This multi-functionality eliminates the need for dedicated haptic signal transmission components like slip rings.
2Reliability
If a rechargeable mechanical energy storage device with friction transmission is used, then haptic signals can be transmitted without slip rings, but device complexity increases due to additional components
Solution Approach 1:
The patent merges the haptic signal generation and transmission functions into the existing steering column structure. The generating device is integrated directly into the steering column, and the haptic signals are transmitted through the steering spindle and steering wheel assembly that already exist in the vehicle, eliminating the need for separate friction transmission mechanisms.
Solution Approach 2:
The existing steering column components serve themselves by transmitting both mechanical steering movements and haptic signals. The steering spindle and steering wheel assembly, which already exist for mechanical steering, automatically transmit haptic signals generated by the integrated generating device without requiring additional dedicated transmission components.
3Device complexity
If friction transmission is used to activate the steering spindle, then slip rings are avoided, but reliability is questionable in the long term
Solution Approach 1:
The existing steering column components serve themselves by transmitting both mechanical steering movements and haptic signals. The steering spindle and steering wheel assembly, which already exist for mechanical steering, automatically transmit haptic signals generated by the integrated generating device without requiring additional dedicated transmission components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for efficient and reliable transmission of haptic signals to the driver through the steering wheel, enhancing safety by adapting signal intensity and type based on vehicle state parameters without the need for complex additional components.
Implementation Method 1
it is preferably provided that the casing unit forming the resonance box has a resonance frequency which corresponds to a frequency of the haptic signal that can be generated by the generating device or is at least so close to the frequency of the haptic signal that the casing unit can be set into resonance
Data Source
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AI summary
The invention relates to a steering arrangement (1) for a vehicle (2) having a rotatable steering handle, particularly a steering wheel (3), and a steering shaft (4) rotationally connected thereto, and at least one generator unit (5) for at least one haptic signal, wherein the steering shaft (4) is supported in a casing unit (6) of the steering arrangement (1), wherein the casing unit (6) is connected to the generator unit (5) for at least one haptic signal and is disposed as a transmission unit for transmitting the haptic signal to be generated by the generator unit (5) to the steering shaft (4) between the generator unit (5) and the steering shaft (4).