| 摘要 |
<p>Housing for air bag inflator (86) has a base (90) and a spaced apart coaxial top wall (94) with aligned peripheral edges and central openings. Outer side wall (98) extends between the aligned peripheral edges of base (90) and top wall (94). Wall (98) has normally sealed gas exit ports (102). Forged cylindrical member (108) that is shaped like a rivet has an integral inner side wall (124). Wall (124) is in coaxial alignment with the outer top wall (94). Inner side wall (124) has an upper end in contact with the top wall (94) and a lower end portion crimped over against the lower surface of the base (90). This defines a central inner space in the housing for the ignition train, and having normally sealed ignition ports therein. Outer side wall (98) has an annular end flange at a lower end portion (144) crimped over against a lower surface of the base (90) to close the housing, with the base (90), top wall (94), inner wall (124) and outer wall (98) defining an annular outer chamber which provides an outer pressure vessel (164) for contg. gas generating material (92). The ignition train is housed in an inner pressure vessel (128) that is in the central inner space, being press fit against the inner side wall (124), and having normally sealed ignition exit ports therein. Pressure vessel (128) has an open end into which is inserted a squib (152) that closes the open end of pressure vessel (128) and contg. all the prim. and sec. pyrotechnic charges that is required to ignite gas generating material (92).</p> |
