Air bag inflator with initiator retainer

摘要

An inflator (10) comprises a container (30) in which inflation fluid is stored under pressure. The container (30) has an opening (40) through which inflation fluid flows in a given direction from the container. A rupturable closure member (60) is fixed to the container (30) and blocks flow of inflation fluid through the opening (40). The inflator includes an initiator (70) for, when actuated, rupturing the closure member (60) to enable inflation fluid to flow from the container through the opening (40). The inflator (10) also includes a retainer (90) for retaining the initiator (70) on the container (30). The retainer (90) comprises at least one part (94) having a passage (140) for directing gas that flows from the container (30) in the given direction. The inflator (10) also includes a support (150) for the rupturable closure member (60). The support (150) transmits force from the closure member (60) to said retainer (90).