Vehicle Airbag With Segmented Chambers For Side Impact Protection
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Solution Overview
Problem
In vehicle airbag systems, occupants in front seats face risks of injury from colliding with each other or the seats during a side vehicle impact, as their upper bodies move forward, leading to potential head and torso collisions.
Innovation Solution
The airbag design includes a lower chamber that deploys on one side of the torso, an upper chamber with a protecting chamber for the head and a confining chamber that limits lateral movement, supported by an armrest, along with guide tethers and an auxiliary chamber to prevent collisions and stabilize the occupant's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional airbag system is used, then the basic impact protection function is provided, but the occupants can still collide with each other or the seats during side vehicle impact
Solution Approach 1:
The airbag is divided into multiple functional chambers: a lower chamber for torso support, an upper chamber with a protecting chamber for head protection, and a confining chamber for limiting lateral movement. This segmentation allows each chamber to address specific collision risks independently, thereby improving overall protection reliability while targeting specific harmful factors.
Solution Approach 2:
The airbag extends in multiple spatial dimensions to provide comprehensive protection. The lower chamber provides lateral support, the protecting chamber extends upward for head protection, and the confining chamber limits forward movement. This multi-dimensional deployment creates a protective envelope that prevents occupants from colliding with seats or other occupants during side impacts.
2Device complexity
If the airbag structure is simplified, then the device complexity is reduced, but the ability to confine and protect occupants is compromised
Solution Approach 1:
The airbag is divided into multiple functional chambers: a lower chamber for torso support, an upper chamber with a protecting chamber for head protection, and a confining chamber for limiting lateral movement. This segmentation allows each chamber to address specific protection needs independently, thereby improving overall protection reliability while maintaining manageable structural complexity through modular design.
Solution Approach 2:
The airbag employs a nested chamber structure where the protecting chamber and confining chamber are integrated within the upper chamber framework. The confining chamber is positioned within the upper chamber space, and both are connected to the lower chamber. This nesting approach achieves complex multi-functional protection capabilities without proportionally increasing external dimensions or manufacturing complexity.
3Reliability
If the airbag chambers are positioned to maximize protection, then the protective effect is improved, but the risk of collision with adjacent occupants increases
Solution Approach 1:
The airbag employs asymmetric chamber positioning and sizing tailored to specific protection needs. The protecting chamber is positioned偏 toward the head area with sufficient volume to prevent head-to-head collisions, while the confining chamber is positioned to limit torso movement without extending into the space of adjacent occupants. This localized optimization of chamber properties achieves maximum protection while minimizing interference with neighboring occupants.
Solution Approach 2:
The airbag extends in multiple spatial dimensions to provide comprehensive protection. The lower chamber provides lateral support, the protecting chamber extends upward for head protection, and the confining chamber limits forward movement. This multi-dimensional deployment creates a protective envelope that prevents occupants from colliding with seats or other occupants during side impacts.
Data Source
AI summary
An airbag for a vehicle includes a lower chamber and a confining chamber that confine the upper body of an occupant in a seat such that the upper body of the occupant cannot rotate in a lateral direction in the event of a side vehicle impact. The airbag further includes a protecting chamber coming into contact with the head of the occupant, thereby preventing the head of one occupant from colliding with the head of another occupant. The airbag provides secure protection for an occupant from an impact.