End base assembly for vehicle airbag module
First Claim
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1. An inflator for a motor vehicle passenger-side airbag module which comprises:
- a substantially cylindrical inflator housing having first and second ends and a ported sidewall for venting inflating gas to an airbag;
a generant assembly within said inflator housing including a substantially cylindrical filter having first and second ends and enclosing a gas generant therein;
a substantially cup-shaped first end base having a circular main body closing the first end of said inflator housing, a cylindrical outer wall surrounding the first end of said filter and enclosed within the sidewall of said inflator housing, and a cylindrical inner wall extending from the main body parallel to said outer wall;
a pre-load member intermediate, and compressed between, said inner wall and said gas generant;
a substantially cup-shaped second end base having a circular main body closing the second end of said inflator housing, a cylindrical outer wall surrounding the second end of said filter and enclosed within the sidewall of said inflator housing, and a cylindrical inner wall extending from the main body parallel to said outer wall in contact with said gas generant, and means for retaining an initiator within said inner wall;
each of said first and second end bases being free of positive restraints against rotational movement about the longitudinal axis of said cylindrical filter; and
means for compressing each of said first and second end bases against the respective ends of said cylindrical filter and sealing the junction of said outer wall with said inflator housing.
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Accused Products
Abstract
The cylindrical inflator housing of a passenger-side airbag module encloses a cylindrical filter pack containing the gas generant. The ends of the housing are closed by a pair of circular end bases which are press-fitted against the ends of the filter pack and provide improved heat transmission characteristics from the outside of the housing to the interiors of the end bases. In place of O-rings, the end bases are sealed to the housing by sheet gaskets.
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Citations
12 Claims
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1. An inflator for a motor vehicle passenger-side airbag module which comprises:
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a substantially cylindrical inflator housing having first and second ends and a ported sidewall for venting inflating gas to an airbag; a generant assembly within said inflator housing including a substantially cylindrical filter having first and second ends and enclosing a gas generant therein; a substantially cup-shaped first end base having a circular main body closing the first end of said inflator housing, a cylindrical outer wall surrounding the first end of said filter and enclosed within the sidewall of said inflator housing, and a cylindrical inner wall extending from the main body parallel to said outer wall; a pre-load member intermediate, and compressed between, said inner wall and said gas generant; a substantially cup-shaped second end base having a circular main body closing the second end of said inflator housing, a cylindrical outer wall surrounding the second end of said filter and enclosed within the sidewall of said inflator housing, and a cylindrical inner wall extending from the main body parallel to said outer wall in contact with said gas generant, and means for retaining an initiator within said inner wall; each of said first and second end bases being free of positive restraints against rotational movement about the longitudinal axis of said cylindrical filter; and means for compressing each of said first and second end bases against the respective ends of said cylindrical filter and sealing the junction of said outer wall with said inflator housing. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An inflator for a motor vehicle passenger-side airbag module which comprises:
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a trough-shaped reaction canister with an integral, substantially cylindrical, inflator housing having first and second ends and a ported sidewall for directing inflating gas to an airbag housed within said canister; a generant assembly within said inflator housing including a substantially cylindrical filter having first and second ends and enclosing a gas generant therein; a substantially cup-shaped first end base having a circular main body closing the first end of said inflator housing, a cylindrical outer wall surrounding the first end of said filter and enclosed within the sidewall of said inflator housing, and a cylindrical inner wall extending from the main body parallel to said outer wall; a pre-load member intermediate, and compressed between, said inner wall and said gas generant; a substantially cup-shaped second end base having a circular main body closing the second end of said inflator housing, a cylindrical outer wall surrounding the second end of said filter and enclosed within the sidewall of said inflator housing, and a cylindrical inner wall extending from the disk-shaped bottom parallel to said outer wall in contact with said gas generant, and means for retaining an initiator within said inner wall; each of said first and second end bases being free of positive restraints against rotational movement about the longitudinal axis of said cylindrical filter; and means for compressing each of said first and second end bases against the respective ends of said cylindrical filter and sealing the junction of said outer wall with said inflator housing. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification