Airbag Module Cover Integrated Fastening for Fabric Housing
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Solution Overview
Problem
Existing airbag modules with fabric housings face challenges in achieving a simple and reliable mounting structure, often requiring complex intermediate elements and increased effort during assembly.
Innovation Solution
The airbag module integrates fastening means directly onto the cover, such as hooks and locking elements, allowing the fabric housing to be securely attached without intermediate elements, facilitating easy mounting and reliable force transfer during deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intermediate elements (frame) are used to mount the fabric housing on the cover, then the mounting reliability is improved, but the device complexity increases
Solution Approach 1:
The patent removes the intermediate frame element from the mounting structure. Instead of using a frame as an intermediary between the cover and fabric housing, the fabric housing is mounted directly to the cover using integrated fastening means (hooks, locking elements), thereby simplifying the structure while maintaining mounting reliability through direct attachment.
Solution Approach 2:
The fastening means (hooks and locking elements) are integrated directly into the cover, merging the mounting function into the cover itself rather than requiring a separate frame structure. This consolidation eliminates the intermediate element and reduces overall device complexity.
2Reliability
If intermediate elements (frame) are used to mount the fabric housing, then the mounting reliability is improved, but the manufacturing effort increases
Solution Approach 1:
The frame intermediary is removed, eliminating the need to manufacture and assemble multiple components (cover, frame, housing). The direct mounting approach reduces manufacturing steps and effort while maintaining reliability through direct fastening.
Solution Approach 2:
The fastening means (hooks and locking elements) are pre-integrated into the cover during cover manufacturing. This preliminary integration of mounting features eliminates the need for separate frame assembly operations, reducing manufacturing effort while ensuring reliable mounting.
3Device complexity
If the fabric housing is directly attached to the cover, then the device complexity is reduced, but the mounting reliability may be compromised
Solution Approach 1:
The direct attachment system is segmented into multiple functional components: hooks for initial attachment, locking elements for securing, and fastening means for connection. This segmentation allows each component to perform its specific function reliably, ensuring mounting reliability while maintaining structural simplicity.
Solution Approach 2:
The locking elements are designed to engage with the hooks and fabric housing before deployment forces act on the system. This preliminary engagement creates a pre-positioned, secure connection that is prepared to withstand the high forces generated during airbag deployment, ensuring reliability without adding structural complexity.
Data Source
AI summary
The invention relates to an airbag module comprising a housing (14) for an airbag (16) and a cover (12), the housing including a fabric part (14) which at least partly encloses the airbag (16), characterized in that means (20; 30; 60) for fastening the housing (14) which are formed integrally with the cover (12) are provided and in that the fabric part (14) is arranged directly on the fastening means (20; 30; 60).