Air bag module with vent controlled by tether

摘要

An air bag ( 12 ) is inflatable by inflation fluid. A support member ( 20 ) has a first vent opening ( 44 ) for enabling flow of inflation fluid away from the bag ( 12 ). A vent member ( 46 ) is movable relative to the first vent opening ( 44 ) between a first condition in which the vent member does not close the opening that enables flow of inflation fluid away from the bag ( 12 ) and a second condition in which the vent member at least partially blocks the flow of inflation fluid through the opening and away from the bag. A tether ( 50 ) has a first portion ( 52 ) connected for movement with the bag ( 12 ) as the bag is deployed. The tether ( 50 ) is associated with the vent member ( 46 ) and causes it to move relative to the opening ( 44 ) from the first condition to the second condition as the bag ( 12 ) is deployed.