Curtain Airbag Ramp Pattern Guides Deployment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Curtain airbag modules face issues with unstable deployment due to the curtain airbag cushion being inserted into the pillar trim during deployment, leading to ineffective protection and increased manufacturing costs and complexity in existing solutions.
Innovation Solution
A curtain airbag module with a ramp pattern integrated into the cushion, made from the same fabric material, guides the deployment direction to prevent insertion into the pillar trim, formed simultaneously during the weaving process, and wraps around the cushion to ensure stable deployment and easy installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protrusion part is added to the ramp bracket to prevent cushion insertion into pillar trim, then deployment stability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the ramp bracket and the insertion prevention structure into a single integrated component. The bracket includes both the support function and the insertion prevention function through its geometric design, eliminating the need for separate protrusion parts and reducing overall device complexity while maintaining deployment stability.
Solution Approach 2:
The patent applies local geometric features to specific regions of the ramp bracket. The bracket has different cross-sectional shapes at different locations - a first cross-sectional shape for support and a second cross-sectional shape for insertion prevention - allowing each region to perform its specific function optimally without complicating the entire structure.
2Reliability
If the ramp bracket structure is modified to improve cushion deployment stability, then deployment reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent changes the geometric parameters of the ramp bracket, specifically the cross-sectional shape, to achieve both support and insertion prevention functions. By optimizing the geometric parameters rather than adding complex structural elements, the manufacturing process remains simple and cost-effective while achieving the desired deployment stability.
3Reliability
If a complex ramp bracket structure is used to prevent cushion insertion, then deployment stability is improved, but the volume of the ramp bracket increases, making installation difficult
Solution Approach 1:
The patent merges multiple functions into the ramp bracket without increasing its volume. The integrated design allows the bracket to provide both support and insertion prevention within the same spatial envelope, avoiding the need for additional components that would increase overall volume and complicate installation.
Solution Approach 2:
The patent uses local geometric variations in the ramp bracket's cross-section to achieve different functions at different locations. This approach allows insertion prevention through localized shape features rather than requiring a uniformly complex structure throughout, thereby maintaining a compact overall volume suitable for installation in the head lining inner space.
Data Source
AI summary
Disclosed is a curtain airbag module including a curtain airbag cushion, an inflator of supplying and inflating gas into the curtain airbag cushion, and a lamp bracket fixed on a vehicle panel to support the curtain airbag cushion which is integrally provided with a lamp pattern to deploy the curtain airbag cushion into a vehicle without deploying the curtain airbag cushion into a pillar trim of a vehicle in the deployment of the curtain airbag cushion by driving the inflator. The lamp pattern wraps up at least a portion of the folded curtain airbag cushion. The lamp pattern initially wrapping up the folded curtain airbag cushion guides the curtain airbag cushion to the interior of the vehicle when the curtain airbag cushion is deployed, thereby preventing the curtain airbag cushion from being inserted into the pillar trim, so that the curtain airbag cushion is stably deployed.