DUAL-STAGE AIRBAG INFLATOR

摘要

The present invention relates to a dual-stage airbag inflator (1) comprising a first chamber (3) containing a first combustible charge (6) for generating inflation gas and heat during combustion, a second chamber (4) containing a second combustible charge (7) for generating inflation gas during combustion, a partition (5) separating said chambers (3, 4) from each other, an ignition device (13) adapted to initiate combustion of said first combustible charge (6) for inflating an airbag in a first stage and means to initiate combustion of said second combustible charge (7) for inflating the airbag in a second stage, said second stage being subsequent to said first stage. The partition (5) is made of a heat conductive material to conduct heat from said first chamber (3) to said second chamber (5) and constitutes said means for initiating combustion of said second combustible charge (7). The present invention aims at providing an improved dual-stage airbag inflatornot being bulky and complex.