Roof Airbag Guide Assembly with Directional Locking
Solution Overview
Problem
Existing roof airbag systems for vehicles lack efficient mechanisms for quick and reliable deployment along a horizontal trajectory, which is essential for effective occupant protection during accidents.
Innovation Solution
A guide assembly comprising guide members, sliding members, and locking members is used to deploy and maintain the airbag in a desired position, allowing translation in one direction while preventing it in the opposite direction, ensuring rapid deployment and stable positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a guide assembly with sliding members and locking members is implemented, then the airbag deployment speed and reliability are improved, but the device complexity increases
Solution Approach 1:
The guide assembly employs dynamic locking members that can transition between locked and unlocked states, allowing the system to adapt its constraints based on deployment phase. The locking members are positioned to engage with sliding members during deployment, providing controlled motion guidance while maintaining system reliability through dynamic state changes rather than static constraints
Solution Approach 2:
The guide assembly is segmented into multiple independent guide members, each with its own sliding and locking mechanisms. This segmentation allows each component to perform its function independently, improving overall deployment reliability through redundancy while managing complexity by breaking down the system into manageable, standardized modules
2Stability of the object's composition
If the locking member prevents translation in the opposite direction, then the airbag positioning stability is improved, but the deployment speed may be reduced
Solution Approach 1:
The locking members are pre-positioned along the guide members at specific locations that correspond to the desired airbag deployment position. During deployment, the sliding members translate along the guide members and automatically engage with these pre-positioned locking members, which then prevent further translation in the opposite direction. This preliminary positioning ensures both rapid deployment and stable final positioning without requiring active control during the deployment process
Data Source
AI summary
A guide assembly for a roof airbag arrangement of a vehicle includes a guide member, at least a first sliding member and a locking member. The first sliding member is carried by the guide member and translatable relative to the guide member along a translation axis. The locking member is carried by the guide member and is operable in a first position to permit the first sliding member to translate past the locking member in a first direction and operable in a second position to prevent translation of the first sliding member past the locking member in a second direction. The second direction being opposite to the first direction.