초록 ▼

An inflator for a protective air bag is arranged for initiation by an ignition squib assembly that is adapted to be incorporated in the inflator housing structure after assembly thereof with the inflator pyrotechnics contained therein. The ignition squib assembly includes a sleeve having a circular

An inflator for a protective air bag is arranged for initiation by an ignition squib assembly that is adapted to be incorporated in the inflator housing structure after assembly thereof with the inflator pyrotechnics contained therein. The ignition squib assembly includes a sleeve having a circular crimp on a first end region thereof with a collar on the sleeve in tight embracing relation with that region. Igniting materials including an electrical squib and ferrite beads are potted in the sleeve. The sleeve and attached collar are pressed in a hole in the wall of the housing structure defining the inflator ignition chamber with a second end region of the sleeve extending into the ignition chamber and an inner end of the collar abutting an O-ring in the hole to provide a seal. A lip on the hole is rolled over the collar to prevent the ignition squib assembly from being pulled out of the hole.

대표청구항 ▼

A method for incorporating an initiator in the housing structure of an inflator having an ignition chamber after assembly of the housing structure with the inflator pyrotechnics contained therein comprising the steps of: (a) forming a hole in the wall of said inflator ignition chamber with said hole

A method for incorporating an initiator in the housing structure of an inflator having an ignition chamber after assembly of the housing structure with the inflator pyrotechnics contained therein comprising the steps of: (a) forming a hole in the wall of said inflator ignition chamber with said hole having a first inner shoulder and an external lip; (b) placing an O-ring in said hole in engaging relationship with said inner shoulder; (c) forming an initiator for press fit insertion into said hole by: (1) placing a collar having an inner end and an outer end on a first end portion of a sleeve, said sleeve also having a second end portion and having a circular crimp on said first end portion, said collar having an inner shoulder adjacent said outer end thereof against which the end of said sleeve adjacent said first end portion is positioned in abutting relation; (2) expanding said sleeve into said collar to effect a tight attachment of said collar on said sleeve; (3) placing igniting materials including an electric squib having a pair of energizing terminals in said sleeve; and (4) potting said igniting materials in said sleeve with the said energizing terminals of said electric squib extending outwardly from the end of said first end portion of said sleeve; (d) incorporating in the housing structure of the inflator said initiator so formed in accordance with step (c) by: (1) pressing said sleeve and collar in said hole in the wall of said inflator ignition chamber with the inner end of said collar bearing against said O-ring therein thereby to effect a seal for said ignition chamber; and (2) rolling the external lip of said hole over the outer end of said collar to prevent said collar and sleeve from being pulled out of said hole.