Patent ID: 7883110
Filing Date: 2011-02-08
Classification: B60R

Abstract:
1. An airbag, comprising: an open-and-close type vent; and a gas discharge limitation member configured to limit a gas discharged from the vent, the airbag being constructed in such a way that when the airbag is expanded the gas discharge limitation member closes the vent or opens the vent by a small amount when an occupant is not in contact with an occupant-facing surface of the airbag and when the occupant is brought into contact with the occupant-facing surface of the expanded airbag, thereby the occupant-facing surface retreats in an opposite-to-occupant direction, the gas discharge limitation member opening the vent by at least a large amount and discharging the gas from the airbag through the vent, the gas discharge limitation member comprising: wherein the lid member is constructed to close the vent or open the vent by a small amount until the lid member is pulled by the invertible portion and is constructed to open the vent by at least a large amount by pulling the lid member with the invertible portion, and wherein in a state that an approximately entire invertible portion is everted outside the airbag, a length in an everting direction of the invertible portion is formed to be larger than a moving distance where the lid member moves from a position at which the lid member closes the vent or opens the vent by a small amount to a position at which the lid member opens by at least a large amount.