Airbag Magnetic Guide Elements for Deployment Directionality
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Solution Overview
Problem
Current airbag systems lack effective mechanisms to guide and maintain airbags in predetermined positions during deployment, which can affect their protective performance and stability.
Innovation Solution
Incorporating magnetic elements into airbag cushions and vehicle structures, allowing for magnetic interaction to guide and retain airbags in specific directions or positions, combined with a retention mechanism to ensure the airbag remains deployed effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic elements are added to guide and maintain airbag position, then deployment directionality and stability are improved, but device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical guiding mechanisms (such as rails, guides, or physical constraints) with a magnetic field-based system. Magnetic elements embedded in the airbag cushion interact with magnetic guide elements in the vehicle structure to provide contactless guidance and positioning forces, thereby improving reliability without requiring complex mechanical assemblies.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the airbag cushion and the vehicle structure. Instead of direct mechanical contact or complex linkages, the magnetic field acts as a mediator to transmit guiding and positioning forces, simplifying the overall system while enhancing deployment control.
2Reliability
If magnetic elements are integrated into airbag cushion and vehicle structure, then airbag retention in predetermined position is improved, but manufacturing complexity increases
Solution Approach 1:
The patent divides the magnetic retention system into two separate components: magnetic elements integrated into the airbag cushion and magnetic guide elements embedded in the vehicle structure. This segmentation allows each component to be manufactured independently using existing processes, with the airbag cushion manufactured separately and then installed in the vehicle where it interacts with pre-installed guide elements.
Solution Approach 2:
The patent utilizes the magnetic properties (a physical parameter) of the magnetic elements and guide elements to achieve retention functionality. By changing from mechanical retention methods to magnetic field interactions, the system achieves reliable position maintenance while allowing for flexible manufacturing approaches where magnetic components can be integrated into standard airbag production lines.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The magnetic interaction enhances the airbag's deployment directionality and stability, improving protection by ensuring the airbag maintains a predetermined position, thereby enhancing occupant safety and module efficiency.
Implementation Method 1
the airbag magnetic element and the magnetic guide element magnetically interact with one another to at least one of guide the airbag cushion in a predetermined direction
Implementation Method 2
the airbag magnetic element and the magnetic guide element magnetically interact with one another to at least one of guide the airbag cushion in a predetermined direction or maintain the airbag cushion in a predetermined deployed position
Data Source
AI summary
An airbag module for a vehicle includes an airbag cushion; an inflator coupled to the airbag cushion and configured to selectively provide air to inflate and deploy the airbag cushion from a stowed state into a deployed state; an airbag magnetic element coupled to the airbag cushion; and a magnetic guide element arranged at a distance to the airbag magnetic element when the airbag cushion is in the stowed state. Upon deployment of the airbag cushion, the airbag magnetic element and the magnetic guide element magnetically interact with one another to at least one of guide the airbag cushion in a predetermined direction or maintain the airbag cushion in a predetermined deployed position.