Airbag Aufblasvorrichtung

摘要

An inflator (14) for inflating an air bag (12) includes a housing (50) containing ignitable gas generating material (60), and an initiator (240) for igniting the gas generating material (60). The inflator (14) further includes a closure cap (56) for closing an end portion (352) of the housing (50), and a retainer (242) for supporting the initiator (240) on the closure cap (56). The closure cap (56) and the retainer (242) have metal surface portions (220,286,290) which extend circumferentially around an axis (40,172) and which are pressed radially against each other to form a seal (332) for blocking gas from exiting the housing (50) between the retainer (242) and the closure cap (56). The metal surface portions (286,290) of the retainer (242) include a cylindrical surface (286) and a frusto-conical surface (290). The frusto-conical surface (290) extends radially inward from the cylindrical surface (286) and is inclined at an angle (A1) from a plane (292) perpendicular to the axis (40). The angle (A1) is within the range of approximately 20 DEG to approximately 40 DEG .