Steering Column Housing Segmentation for Differential Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Steer-by-wire steering systems in motor vehicles lack haptic feedback, making it difficult to intuitively sense driving situations and affecting vehicle steerability and safety, while existing sealing methods to protect the steering column from external influences increase production and assembly costs.
Innovation Solution
The control housing of the steering column is designed with higher sealing protection than the sensor housing, specifically achieving IP69 protection, while the sensor housing has lower protection, such as IP54, to reduce costs and maintain operational reliability by adapting sealing arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire steering column is sealed off from external influences, then protection against moisture and solids is improved, but production and assembly costs increase
Solution Approach 1:
The steering column is divided into multiple housing sections (sensor housing, motor housing, control housing) with different sealing requirements. Each housing is sealed independently according to its specific protection needs, rather than sealing the entire steering column. This segmentation allows cost-effective sealing solutions for each component based on its actual exposure and sensitivity to external influences.
Solution Approach 2:
Different housing sections are assigned different degrees of sealing protection based on their specific functional requirements and exposure levels. The control housing receives higher sealing protection than the sensor housing, as each component's sealing level is optimized for its local needs rather than applying uniform sealing throughout the entire steering column.
2Reliability
If the control unit is protected from external influences, then operational reliability is improved, but device complexity increases
Solution Approach 1:
The control unit is housed in a separate control housing that is sealed independently from other components. This segmentation allows the control unit to be protected from external influences without requiring complex sealing arrangements to cover the entire steering column, as only the control housing requires high-level sealing.
Solution Approach 2:
The control housing is assigned higher sealing protection specifically for the control unit, while other housings receive appropriate but lower levels of protection. This localized approach to sealing ensures the control unit is protected without unnecessarily complicating the sealing arrangements for the entire steering column.
Data Source
AI summary
A steering column for a motor vehicle comprises a steering spindle that is mounted in a sleeve unit so as to be rotatable about a longitudinal axis, is connected to an absolute angle sensor arranged in a sensor housing, and is coupled to a feedback actuator which has an electric motor that is connected to a control unit arranged in a control housing, wherein the motor has a relative angle sensor. In order to allow high operational reliability with less effort, the invention proposes that the control housing have higher sealing protection with respect to external influences than the sensor housing.