Airbag Assembly Single Protective Wrapper
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Solution Overview
Problem
Existing airbag assemblies require multiple mounting steps and use of multiple protective fabrics, leading to friction issues during deployment due to the layers of fabric, making the assembly process complex and prone to crowning of the airbag cushion.
Innovation Solution
An airbag assembly utilizing a single protective wrapper that is wrapped around the airbag cushion and fastened to the housing, with fastening means extending over the flange to prevent crowning and minimize friction, allowing for a single mounting step and eliminating the need for additional fabrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple protective fabrics are used to secure the airbag cushion and prevent crowning, then the airbag cushion is securely fastened and crowning is prevented, but friction between the fabric layers increases during deployment and the assembly process becomes more complex
Solution Approach 1:
The patent combines multiple protective fabrics into a single integrated wrapper structure that performs both functions: securing the airbag cushion and preventing crowning. This single wrapper eliminates the friction caused by multiple fabric layers while maintaining all necessary protective and securing functions.
Solution Approach 2:
The single wrapper is designed to perform multiple functions simultaneously: it acts as a protective cover, a securing mechanism with fastening means, and a crowning prevention structure through its specific geometry. This multi-functional design eliminates the need for separate components.
2Reliability
If multiple protective fabrics are used to secure the airbag cushion, then the airbag cushion is securely fastened, but the assembly process requires multiple mounting steps
Solution Approach 1:
The patent combines multiple protective fabrics into a single integrated wrapper structure that performs both functions: securing the airbag cushion and preventing crowning. This single wrapper eliminates the friction caused by multiple fabric layers while maintaining all necessary protective and securing functions.
Solution Approach 2:
The single wrapper is designed to perform multiple functions simultaneously: it acts as a protective cover, a securing mechanism with fastening means, and a crowning prevention structure through its specific geometry. This multi-functional design eliminates the need for separate components.
3Ease of manufacture
If the airbag cushion is directly folded into the housing, then the assembly process is simplified, but a protective fabric covering the opening is still needed and mounting becomes sophisticated to prevent the cushion from extending above the flange
Solution Approach 1:
The single wrapper is designed to perform multiple functions simultaneously: it acts as a protective cover, a securing mechanism with fastening means, and a crowning prevention structure through its specific geometry. This multi-functional design eliminates the need for separate components.
Solution Approach 2:
The wrapper is made from a flexible fabric material that can be wrapped around the airbag cushion and conform to the housing interior. This flexible film structure provides protection and securing functions while allowing easy installation without sophisticated mounting procedures.
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to an airbag assembly, comprising - a housing (1), - an airbag cushion (2) and - a single protective wrapper (3) having fastening means (4, 5, 8) with which the wrapper (3) is fastened to the housing (1), wherein - the housing (1) has an opening (6) through which the airbag cushion (2) can be deployed and a flange (7) delimiting the opening (6), and - the wrapper (3) is wrapped around the airbag cushion (2) and covers the airbag cushion (2) at least partly on the side of the opening (6), and - the fastening means of the wrapper (3) extend to or over an upper side of the flange (7) of the housing (1).