Vehicle curtain airbag system

The vehicle curtain airbag device addresses the challenge of suppressing occupant injuries during side collisions and rollovers by using a split chamber with a tuck-in portion and tethers to stabilize deployment and enhance restraint, achieving efficient injury reduction and cost-effective protection.

JP7884563B2Active Publication Date: 2026-07-03AUTOLIV DEV AB
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
AUTOLIV DEV AB
Filing Date
2024-02-27
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing curtain airbag devices struggle to efficiently suppress injury to vehicle occupants during side collisions or rollovers, particularly by effectively covering side windows and preventing occupants from being ejected, while also requiring reduced gas capacity.

Method used

A vehicle curtain airbag device with a split chamber that inflates and unfolds into a downwardly convex shape, featuring a tuck-in portion to maintain expansion pressure and a check valve function, and supported by upper and lower tethers to stabilize deployment and enhance occupant restraint.

Benefits of technology

The device effectively suppresses occupant injuries by extending protection area downward without increasing volume, maintaining expansion pressure, and stabilizing deployment, thereby improving occupant restraint force.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a vehicle curtain airbag device that can efficiently reduce the injury value of an occupant in an emergency.SOLUTION: An airbag cushion 102 of a vehicle curtain airbag device 100 includes: each main chamber that inflates and deploys; a split chamber 136 that extends in a longitudinal direction of a vehicle along a lower edge of the airbag cushion 102 and is separated from each main chamber except for one end 136a that receives gas from a third main chamber 128; and a tuck-in portion 142 formed on one end 136a side of the split chamber 136 by folding a panel 146 on the one end 136a side of the split chamber 136 inward toward the other end 136b side. The tuck-in portion 142 is formed so that a folded portion of the panel 146 becomes wider as proceeding downward. The tuck-in portion 142 causes the split chamber 136 to inflate and deploy into a curved downwardly convex shape.SELECTED DRAWING: Figure 3
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