Passenger Seat Airbag Regulating Member Rearward Release Mechanism
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Solution Overview
Problem
Existing passenger seat airbag devices have a rear end of the preliminary folded airbag that is not effectively deployed along the upper surface of the instrument panel during inflation, leading to inefficient protection of occupants.
Innovation Solution
A passenger seat airbag device with a regulating member that includes a temporary holding portion with a rearward-facing release opening, allowing the rear end of the airbag to rotate upward and then rearward, enabling it to separate from the storage part and deploy along the upper surface of the instrument panel, ensuring wider and smoother deployment of the occupant side wall portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the rear end of the preliminary folded airbag is stored in the temporary holding portion of the regulating member, then the airbag can be compactly stored in the storage part, but the rear end side cannot be rapidly separated from the storage part and deployed along the upper surface of the instrument panel
Solution Approach 1:
The airbag is divided into multiple folded parts with different storage locations: the front side part is stored in the storage part while the rear end side part is stored in the temporary holding portion of the regulating member. This segmentation allows different parts to be deployed at different times and locations, enabling the rear end side to be rapidly separated and deployed along the instrument panel surface while maintaining compact storage.
Solution Approach 2:
The regulating member acts as an intermediary mechanism between the storage part and the airbag deployment. The temporary holding portion of the regulating member temporarily stores the rear end side part and facilitates its controlled release and rotation, enabling rapid separation from the storage part and deployment along the instrument panel surface.
2Speed
If the rear end side of the preliminary folded airbag is arranged below the cover portion and extends forward from the release opening, then the rear end side can be rapidly deployed along the upper surface of the instrument panel, but the airbag folding and storage configuration becomes more complex
Solution Approach 1:
The airbag is pre-folded and pre-positioned during assembly with the rear end side part extending forward from the release opening of the temporary holding portion. This preliminary configuration ensures that upon deployment, the rear end side is already positioned to rapidly separate and deploy along the instrument panel surface, eliminating the need for complex real-time adjustments during inflation.
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 airbag is rapidly and widely deployed along the upper-lower direction, enhancing protection for occupants by increasing the deployment radius and ensuring the airbag is fully inflated to receive and protect occupants effectively.
Implementation Method 1
the temporary holding portion is configured such that a release opening which is configured to release the folded part from the holding recess is arranged to face rearward, and the folded part is released from the release opening while the temporary holding portion rotating rearward at a time of releasing the folded part when the airbag is deployed and inflated
Implementation Method 2
an inflow opening, through which the inflation gas flows into the airbag, is provided at a lower surface of a front end side of the peripheral wall portion
Data Source
AI summary
A passenger seat airbag device includes an airbag and a regulating member which regulates deploying and inflating of the airbag. The regulating member includes a temporary holding portion which includes a base portion and a cover portion arranged below the base portion and temporarily and releasably holds a folded part of the folded airbag. While the temporary holding portion rotating rearward, the folded part of the folded airbag is released from a release opening. The airbag is folded and stored in a storage part while a rear end side including a rear end of a preliminary folded airbag is arranged below the cover portion of the temporary holding portion and extends forward from the release opening.