Dual stage pyrotechnic airbag inflator

摘要

An airbag inflator (10) has a first combustion chamber (42) and a second combustion chamber (43). Gas generant (34) in the first combustion chamber (42) is independently ignited from gas generant in the second combustion chamber (43). A divider plate (26) extends across the entire inflator dividing the inflator into the first combustion chamber (42) and the second combustion chamber (43). The divider plate (26) has a generally flat shape associated therewith. A first igniter (37) ignites the gas generant (34) in the first combustion chamber (42), and the inflation gas from the burning of this gas generant (34) passes through only a first filter (33) and then exits the inflator via first exit ports (13). A second igniter (38) ignites the gas generant (34) in the second combustion chamber (43). The burning of gas generant (34) in the second combustion chamber (43) produces inflation gas that travels through only the second filter (24) and then through second exit ports(14). The first igniter (27) and the second igniter (38) are disposed on the same end of the inflator.