Patent ID: 9120460
Filing Date: 2015-09-01
Classification: B60R

Abstract:
1. A front passenger seat airbag apparatus comprising: an airbag that is accommodated in a folded state in an accommodating portion disposed in an instrument panel in front of a front passenger seat of a vehicle; and an inflator that supplies inflation gas to the airbag, the airbag having a configuration in which a front-end side of the airbag is attached to the accommodating portion at complete inflation, the inflation gas discharged from the inflator flows into the airbag, and thus the airbag is deployed and inflated to protrude from the accommodating portion toward a rear side of the vehicle, and a partition wall portion is disposed in the airbag to partition an inner region of the airbag into a front chamber and a rear chamber at the complete inflation of the airbag, the partition wall portion including the front chamber includes a supported portion supported by a portion which becomes a circumferential edge of the accommodating portion of the instrument panel at the complete inflation of the airbag, the flow rate control mechanism controls a flow rate of the inflation gas flowing from the front chamber into the rear chamber by increasing or decreasing an opening area of the communication portion, and the flow rate control mechanism is configured so that the communication portion is pulled in a closing direction by a tension exerted on a surface of the outer circumferential wall of the airbag when the airbag is deployed and inflated, is configured to suppress flow of the inflation gas into the rear chamber via the communication portion at initial inflation of the airbag in such a manner that the front chamber is inflated, and is configured to open the communication portion in such a manner that the inflation gas flows into the rear chamber by an internal pressure of the front chamber.