Collapsible Steering Column Radial Channel Connector
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Solution Overview
Problem
Steer-by-wire steering column assemblies face challenges in packaging and component interference during collapse, as they lack a mechanical connection and require efficient energy absorption mechanisms.
Innovation Solution
A collapsible steering column assembly with a jacket assembly, energy absorption assembly, and a steering actuator connected via a connector plate with a radial channel, allowing for adaptive energy absorption and reduced interference during collapse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a steer-by-wire steering column assembly is used without mechanical connection, then packaging flexibility is improved, but component interference during collapse increases
Solution Approach 1:
The connector plate serves as an intermediary component between the steering actuator and jacket assembly, providing a structured pathway through its radial channel that guides collapsing components and prevents uncontrolled interference while maintaining the steer-by-wire architecture's packaging benefits
2Reliability
If energy absorption assembly is added to collapsible steering column, then safety during collapse is improved, but device complexity increases
Solution Approach 1:
The energy absorption assembly is merged with the existing collapsible steering column structure, utilizing the radial channel of the connector plate as part of the collapse pathway. This integration allows energy absorption functionality to be achieved without adding separate, independent systems, thereby improving safety while limiting the increase in device complexity
3Length of moving object
If radial channel is added to connector plate, then stroke range capability is improved, but manufacturing complexity increases
Solution Approach 1:
The connector plate is segmented with a radial channel that divides the opening into distinct portions, allowing the steering column components to collapse along a defined pathway. This segmentation provides the necessary stroke range while maintaining manufacturability through standard machining operations for creating radial channels in plate structures
Data Source
AI summary
A steering column assembly includes a jacket assembly. The steering column assembly also includes a steering actuator operatively coupled to the jacket assembly with a connector plate, the connector plate defining an opening having a main portion and a channel extending radially outward from the main portion of the opening.