Airbag Cover Stiffness Rib and Groove Coupling
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Solution Overview
Problem
Conventional airbag covers interfere with their surroundings and detract from their aesthetic appearance due to exposed stiffness ribs, necessitating a solution that enhances stiffness while maintaining beauty.
Innovation Solution
A cover device for airbags featuring inner surface stiffness ribs and outer surface stiffness grooves on a mounting plate unit, allowing the ribs to be guided and coupled, ensuring secure assembly without external exposure, thus maintaining aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stiffness ribs are provided on the outer surface of the airbag cover, then stiffness is improved, but aesthetic appearance deteriorates due to exposure
Solution Approach 1:
The stiffness rib is extracted from the outer surface and relocated to the inner surface of the cover unit. The mounting plate unit is also extracted as a separate component with a stiffness groove part. This separation allows the stiffness rib to be hidden inside while still providing the necessary structural support, resolving the conflict between stiffness and aesthetic appearance.
Solution Approach 2:
The stiffness rib on the inner surface of the cover unit is nested within the cover structure, and the mounting plate unit with the stiffness groove part is nested within the cover unit. This nested arrangement allows the stiffness rib to be concealed inside the cover, maintaining aesthetic appearance while preserving stiffness functionality.
2Strength
If stiffness ribs are provided on the airbag cover, then stiffness is improved, but interference with surroundings increases
Solution Approach 1:
The stiffness rib is extracted from the outer surface and relocated to the inner surface of the cover unit. By removing the stiffness rib from the external surface, interference with surrounding components is eliminated while the stiffness function is preserved through the inner surface positioning and mounting plate integration.
3Reliability
If the cover unit and mounting plate unit are securely coupled, then assembly property is improved, but device complexity increases
Solution Approach 1:
The cover unit and mounting plate unit are merged into a single integrated assembly where the mounting plate unit is positioned within the cover unit. The stiffness groove part on the mounting plate unit and stiffness rib on the cover unit work together as a unified coupling mechanism, improving assembly reliability without significantly increasing overall device complexity.
Solution Approach 2:
The stiffness groove part on the mounting plate unit acts as an intermediary element that guides and couples with the stiffness rib on the cover unit. This intermediary structure facilitates secure coupling between the cover unit and mounting plate unit while maintaining a relatively simple overall design.
Data Source
AI summary
A cover device for an airbag includes a cover unit having a stiffness rib formed on the inner surface thereof and a mounting plate unit positioned within the cover unit and having a stiffness groove part formed in the outer surface thereof and configured to guide the stiffness rib.