Airbag Lateral Flap Deployment Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional airbag deployment systems face issues with the airbag cushion tearing, snagging, or being delayed due to out-of-position occupants or objects, such as rear-facing infant car seats, as rough edges in the cover can cause damage during deployment.
Innovation Solution
The airbag assembly incorporates a deployment flap, extension flap, and lateral flap designed to protect the airbag cushion from damage and position it correctly during deployment, with tear seams that rupture to allow independent trajectories and prevent delays, ensuring the airbag deploys effectively around potential obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the airbag cushion deploys directly through the cover, then deployment speed is improved, but the airbag cushion is vulnerable to tearing and snagging on rough edges
Solution Approach 1:
A deployment flap is introduced as an intermediary component between the airbag cushion and the cover. The deployment flap has a smooth leading edge that contacts the cover first during deployment, preventing the rough edges of the cover from directly contacting and damaging the airbag cushion. This mediator allows the airbag to deploy quickly while protecting the cushion from tearing and snagging.
2Reliability
If the airbag cushion deploys with extended flaps for protection, then airbag cushion integrity is improved, but deployment timing may be delayed
Solution Approach 1:
The deployment flap is pre-positioned and pre-oriented before deployment occurs. The flap is attached to the airbag cushion in advance with its leading edge properly positioned to contact the cover first. This preliminary arrangement ensures that when deployment occurs, the protective action is immediate without requiring additional time for the flap to assume its protective position during the deployment event.
3Reliability
If the airbag encounters out-of-position objects, then the airbag may be damaged or delayed, but adding protective structures increases device complexity
Solution Approach 1:
The deployment flap serves multiple functions simultaneously: it protects the airbag cushion from rough edges during normal deployment, guides the airbag around out-of-position objects, and can be designed with tear seams that allow it to separate if it encounters significant resistance. This multi-functionality provides comprehensive protection without requiring multiple separate protective components, thereby limiting the increase in device complexity.
Data Source
AI summary
The airbag assembly features an airbag cushion, a deployment flap, an extension flap attached to the deployment flap, and a lateral flap. The deployment flap is configured to protect the airbag cushion as it deploys from the module housing. The extension flap is configured to position the airbag cushion during deployment. The lateral flap is configured to allow for proper airbag deployment.