INFLATOR FOR AIR BAG.

摘要

An inflator for an air bag, wherein, even if the inflator is constructed such that the top end plate and the bottom end plate thereof are made thin so that the inflator is expandable when gas is produced, the high pressure gas does not leak from a portion or portions other than a predetermined gas flow path, and the inflator is compact in size and light in weight. Said inflator for an air bag, including a pressure vessel formed by joining a cylindrical top vessel part having an end plate to a cylindrical vessel part having an end plate, and a substantially cylindrical partition provided for forming a gas producing chamber in the pressure vessel, is constructed such that each of the said partition comprises a top partition part (4) provided in close contact with the end plate (2) of the top vessel part and a bottom partition part (5) provided in close contact with the end plate (3) of the bottom vessel part, and respective mutually opposed end portions (4a, 5a) of the top partition part (4) and the bottom partition part (5) are slidable on each other in a state where the mutually opposed end portions (4a, 5a) are superposed on each other.