Airbag Assembly Pull-Belt Restraint for Stable Inflation Position
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Solution Overview
Problem
Safety airbags may depart from their working position during inflation due to insufficient support, risking inadequate passenger protection and potential injury to others.
Innovation Solution
A safety airbag assembly with a limiting mechanism featuring an accommodating cavity and a pull belt that secures the airbag to the vehicle frame, ensuring it remains in position during inflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the airbag is designed without a limiting mechanism, then the device complexity is reduced, but the airbag may depart from its working position when impacted by the passenger, compromising safety and reliability
Solution Approach 1:
The patent introduces a limiting mechanism as an intermediary component between the airbag and the vehicle interior. This mechanism includes a limiting component with a limiting end that contacts the airbag and a fixing component that anchors the limiting component to the vehicle frame, thereby mediating the constraint force to maintain airbag position without requiring direct integration into the airbag structure itself.
Solution Approach 2:
The limiting mechanism is segmented into distinct functional components: a limiting component that directly interacts with the airbag, a fixing component that anchors to the vehicle frame, and optionally an adjusting component. This segmentation allows each part to perform its specific function independently, simplifying the overall design while maintaining reliability.
2Adaptability or versatility
If the airbag is designed with adjustable positioning, then the adaptability to different passengers is improved, but the device complexity increases due to additional adjusting mechanisms
Solution Approach 1:
The patent incorporates an adjusting component that enables dynamic repositioning of the limiting mechanism along the airbag surface. This allows the limiting end to be moved to different locations on the airbag, providing adaptability to accommodate different passenger sizes and seating positions while maintaining a relatively simple overall structure through modular design.
Data Source
Figure 1~2
AI summary
A safety airbag (10) and a safety airbag assembly (100) are provided. The safety airbag (10) comprises: an air bag (110) having an inflated state and a stowed state; and a limiting mechanism (120) arranged outside the air bag (110) and configured to limit a position of the air bag (110) in the inflated state. The limiting mechanism (120) comprises an accommodating cavity (1202) and a pull belt (1201). The accommodating cavity (1202) is provided on an outer surface of the air bag (110). The pull belt (1201) is configured to pass through the accommodating cavity (1202).