Steering Assist Device Gear Wheel Sensor Integration
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Solution Overview
Problem
Existing steering assist devices for motor vehicles require significant installation space for sensors, which hinders compact construction and precise control of the backup drive.
Innovation Solution
Integration of a sensor element into the gear wheel, interacting with a sensor counter element fixed in space, allows for a compact design and precise detection of steering parameters, enabling reliable operation of the backup drive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are placed in a separate sensor housing installed in the range of the wheel-side steering shaft, then the steering parameters can be detected, but the installation space requirement increases and the construction becomes less compact
Solution Approach 1:
The patent combines the sensor element with the gear wheel by integrating it directly into the gear wheel structure. This merging eliminates the need for a separate sensor housing and reduces the overall installation space while maintaining detection accuracy. The sensor element is positioned to interact with the sensor counter element on the steering-wheel-side steering shaft, enabling compact construction without sacrificing measurement precision.
2Reliability
If a separate sensor housing is used to encase the sensor elements, then the sensors can be protected and positioned, but the device complexity and installation space increase
Solution Approach 1:
The patent merges the sensor element with the gear wheel, eliminating the need for a separate sensor housing. The sensor element is integrated directly into the gear wheel structure, which provides both protection and positioning functions. This reduces device complexity while maintaining reliability through the gear wheel's inherent structural integrity.
Solution Approach 2:
The gear wheel serves multiple functions: it transmits mechanical torque through the worm wheel transmission and simultaneously houses the sensor element for detecting steering parameters. This multi-functionality eliminates the need for separate sensor housing and reduces overall device complexity.
3Volume of moving object
If the sensor element is integrated into the gear wheel, then the construction becomes compact and axially short, but the manufacturing complexity increases
Solution Approach 1:
The patent integrates the sensor element with the gear wheel by combining them into a single unified component. This merging achieves compact axial construction while the sensor element can be integrated through various manufacturing methods such as embedding, bonding, or modular assembly, balancing compactness with manufacturability.
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
The compact construction and precise sensor detection ensure accurate control of the backup drive, enhancing the steering assist device's reliability and efficiency.
Implementation Method 1
a sensor element (26) is integrated into the gear wheel (18) and interacting over a first sensor counter element (28) installed at the steering-wheel-side steering shaft (12) with a second, sensor counter element (30) fixed in space
Data Source
AI summary
A steering assist device for a motor vehicle is described, which encloses a steering-wheel-side steering shaft and a wheel-side steering shaft coupled to the latter, whereby a gear wheel coupled to a backup drive is installed on the wheel-side steering shaft. Moreover, a sensor element is integrated into the gear wheel and interacts with a second sensor counter element fixed in space over a first sensor counter element installed at the steering-wheel-side steering shaft.