Patent ID: 8727376
Filing Date: 2014-05-20
Classification: B60R

Abstract:
1. An airbag apparatus comprising a gas generator and an airbag inflatable with an inflation gas fed by the gas generator, comprising: a curtain airbag arranged along peripheral edges of vehicle windows, the curtain airbag being flexible and foldable, and comprising: an airbag body inflating with an inflation gas from the gas generator; an inner tube located inside the airbag body configured to guide an inflating gas stream of the inflation gas to a predetermined inflatable region of the airbag body, the inner tube including; the check valve section having a flexible and generally tubular shape that is continuous in a circumferential direction and is split at only one location and is configured to stream the inflation gas generated by the gas generator into the inflating region without resistance, the tubular shape extending and opening toward the inflatable region due to pressure of the inflation gas streaming into the inflatable region while the gas generator discharges the inflation gas, and the check valve section having a length that allows the check valve section to fold back toward the gas upstream section due to an internal pressure of the inflatable region after the gas generator discharges the inflation gas, the folded back check valve closing off the gas outlet section and preventing the inflation gas from flowing back into the inner tube.