Stamped and molded igniter body for airbag inflators
An igniter body for an airbag inflator comprising a stamped metal body portion having a generally annular flange and a central opening. A generally cylindrical plastic connector portion is disposed within the annular flange and is connected to the body portion. The connector portion may be integrally molded within the body portion. The central opening in the body portion is constructed to receive an initiator therein, and the connector portion is constructed to receive a power module therein for connection to an initiator disposed in the central opening and surrounded by a sleeve that is secured to the body portion to retain the initiator thereon.
1 . An igniter body for an airbag inflator, comprising:
a stamped metal body portion having a generally annular flange and a central opening; and
a generally cylindrical plastic connector portion disposed within said annular flange and connected to said body portion;
said central opening in said body portion having constructed to receive an initiator therein; and
said connector portion being constructed to receive a power module therein for connection to an initiator disposed in said central opening.
2 . The igniter body of claim 1 wherein said connector portion is integrally molded within said body portion.
3 . The igniter body of claim 2 wherein said annular flange comprises inwardly extending areas for anchoring and retaining said connector portion within said body portion.
4 . The igniter body of claim 1 wherein said connector portion is connected to said body portion by a snap-fit connection.
5 . The igniter body of claim 4 wherein said annular flange has an internal recess, and said connector portion has a tab that is snap-fitted into said internal recess.
6 . The igniter body of claim 1 wherein said connector portion has a recessed area on an inner surface thereof, and a 360° annular undercut on said inner surface in communication with said recessed area for receiving a complementary portion of a power module therein.
7 . The igniter body of claim 6 wherein an outer surface of said connector portion is constructed to prevent rotation of a power module positioned in said connector portion.
8 . The igniter body of claim 7 wherein said outer surface of said connector portion has a recess for receiving therein a complementary portion of a power module therein to prevent rotation thereof.
9 . The igniter body of claim 1 further comprising an initiator disposed in said central opening, and a sleeve surrounding said initiator and secured to an adjacent portion of said body portion.
10 . The igniter body of claim 9 wherein said sleeve is metal and is welded to said body portion.
11 . The igniter body of claim 9 wherein said initiator has a plug extending into said connector portion for connection to a power module when it is positioned in said connector portion.
12 . A hybrid inflator for an airbag comprising:
an inflator housing having an open end; and
an igniter body secured to the open end of said inflator housing;
said igniter body comprising a stamped metal body portion having a generally annular flange and a central opening, and a generally cylindrical plastic connector portion disposed within said annular flange and connected to said body portion;
an initiator disposed in said central opening, and a sleeve surrounding said initiator and secured to an adjacent portion of said body portion;
said metal body portion being secured to an adjacent portion of said inflator housing.
13 . The hybrid inflator of claim 12 wherein said connector portion is integrally molded within said body portion.
14 . The hybrid inflator of claim 12 wherein said connector portion is connected to said body portion by a snap-fit connection.
15 . The hybrid inflator of claim 12 wherein said sleeve is metal and is welded to said body portion.
16 . The hybrid inflator of claim 12 wherein said initiator has a plug extending into said connector portion for connection to a power module when it is positioned in said connector portion.