Integrated Airbag Ceiling Panel Locking Against Cover Detachment
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Solution Overview
Problem
The existing airbag structure in JP2017-47745A is prone to the ceiling panel falling from the bag cover during deployment and expansion, compromising occupant safety.
Innovation Solution
An integrated airbag structure with a falling-off preventing structure, including a hinge portion and lock-engagement mechanism, ensures the ceiling panel remains connected to the bag cover during deployment and expansion, preventing it from falling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the ceiling panel is attached to the bag cover with a clip or attachment portion, then the ceiling panel can be easily assembled and disassembled, but the ceiling panel is likely to fall from the bag cover during airbag deployment
Solution Approach 1:
The patent integrates the ceiling panel and bag cover into a single unified structure where the ceiling panel is formed as an integral part of the bag cover. This merging eliminates the need for separate attachment portions or clips, ensuring that the ceiling panel cannot detach or fall during airbag deployment while maintaining ease of manufacture through integrated molding or forming processes.
2Ease of manufacture
If the ceiling panel is formed as a separate component from the bag cover, then the components can be manufactured independently, but the ceiling panel may detach during deployment
Solution Approach 1:
The patent combines the ceiling panel and bag cover into a single integrated component structure. The ceiling panel is formed as an integral part of the bag cover through unified manufacturing processes, eliminating the risk of detachment during deployment while still allowing for efficient production through integrated molding or forming operations.
3Reliability
If the ceiling panel is integrated with the bag cover, then the ceiling panel remains connected during deployment, but the manufacturing process becomes more complex
Solution Approach 1:
The patent integrates the ceiling panel and bag cover into a single unified structure that can be manufactured as one piece through integrated molding or forming processes. This approach ensures reliable connection during deployment while managing manufacturing complexity through streamlined production methods suitable for mass production.
Data Source
AI summary
A ceiling panel is prevented from falling from a bag cover when an airbag deploys and expands. An airbag structure includes: an airbag; a bag cover to which the airbag is attached, the bag cover being fixed to a vehicle body; a ceiling panel integrated with the bag cover, the ceiling panel forming a storage space for storing the airbag between the bag cover and the ceiling panel, the ceiling panel opening the storage space by opening with respect to the bag cover, and exposing the airbag toward inside of a vehicle when the airbag deploys and expands; and a falling-off preventing structure disposed between the bag cover and the ceiling panel, the falling-off preventing structure preventing the ceiling panel from falling from the bag cover.