Arrangement for fixing the gas generator of an air bag unit
First Claim
1. An arrangement for fixing a gas generator of an air bag unit with an air bag housing with an inflatable air bag fixed therein, the arrangement comprising:
- a generator chamber connected to the air bag housing, a gas generator connected to a firing unit, as well as a diffuser, for the gas flowing into the air bag from said gas generator if the air bag is fired, said gas generator chamber having an inner wall; and
a spring-elastic fastening element, whereby said gas generator is accommodated by said generator chamber and said gas generator is mounted at an axial end thereof, in a fixed bearing, said spring-elastic fastening element being pressed in an area of a free axial end of said gas generator lying opposite said fixed bearing between an outer circumference thereof and an inner circumference of said generator chamber axially overlapping said gas generator, said fastening element in a pretensioned state, arched into said generator chamber in the axial direction in a section between an outer wall of said gas generator and said inner wall of said generator chamber, whereby said fastening element digs with an outer circumference thereof to said inner wall of said generator chamber, at least partially embracing said bottom of said gas generator, which is formed at this axial end, and sealing said generator chamber, said fastening element having a radial outer edge, and said radial outer edge digging into said inner wall of said generator chamber.
1 Assignment
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Accused Products
Abstract
An arrangement for fixing a gas generator of an air bag unit. The gas generator is securely fixed in the generator chamber and both radial and axial tolerances, in particular of the gas generator, are compensated using a plate-like, spring-elastic fastening element that is pressed in the area of the end of the gas generator lying opposite the fixed bearing between the outer circumference thereof and the inner circumference of the generator chamber axially projecting through the gas generator. After the pressing in, the fastening element is arched into the generator chamber in the axial direction in a section between the outer wall of the gas generator and the inner wall of the generator chamber in the axial direction.
11 Citations
20 Claims
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1. An arrangement for fixing a gas generator of an air bag unit with an air bag housing with an inflatable air bag fixed therein, the arrangement comprising:
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a generator chamber connected to the air bag housing, a gas generator connected to a firing unit, as well as a diffuser, for the gas flowing into the air bag from said gas generator if the air bag is fired, said gas generator chamber having an inner wall; and a spring-elastic fastening element, whereby said gas generator is accommodated by said generator chamber and said gas generator is mounted at an axial end thereof, in a fixed bearing, said spring-elastic fastening element being pressed in an area of a free axial end of said gas generator lying opposite said fixed bearing between an outer circumference thereof and an inner circumference of said generator chamber axially overlapping said gas generator, said fastening element in a pretensioned state, arched into said generator chamber in the axial direction in a section between an outer wall of said gas generator and said inner wall of said generator chamber, whereby said fastening element digs with an outer circumference thereof to said inner wall of said generator chamber, at least partially embracing said bottom of said gas generator, which is formed at this axial end, and sealing said generator chamber, said fastening element having a radial outer edge, and said radial outer edge digging into said inner wall of said generator chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13)
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12. An air bag unit arrangement comprising:
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a generator chamber having an inner wall and axial ends; a gas generator arranged in said generator chamber, said gas generator having an end; a fastening element arranged at said end of said gas generator and between said gas generator and said inner wall of said generator chamber to securely fasten said gas generator to said generator chamber, said fastening element having an outer circumference arranged axially inward of said axial ends of said generator chamber, said fastening element being shaped and sized to deform into an arched position as said fastening element is pressed into said generator chamber, said arched position biasing said outer circumferential surface against said inner wall of said generator chamber, whereby said fastening element clings with said outer circumference thereof to said inner wall, at least partially embracing said one end of said gas generator, said fastening element being completely arranged within said generator chamber. - View Dependent Claims (16, 17, 18, 19)
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14. An arrangement for fixing a gas generator of an air bag unit with an air bag housing with an inflatable air bag fixed therein, the arrangement comprising:
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a generator chamber connected to the air bag housing, a gas generator connected to a firing unit, as well as a diffuser, for the gas flowing into the air bag from said gas generator if the air bag is fired, said gas generator chamber having an inner wall; and a spring-elastic fastening element, whereby said gas generator is accommodated by said generator chamber and said gas generator is mounted at an axial end thereof, in a fixed bearing, said spring-elastic fastening element being pressed in an area of a free axial end of said gas generator lying opposite said fixed bearing between an outer circumference thereof and an inner circumference of said generator chamber axially projecting through said gas generator, said fastening element in a pretensioned state, arched into said generator chamber in the axial direction in a section between an outer wall of said gas generator and said inner wall of said generator chamber, whereby said fastening element clings with an outer circumference thereof to said inner wall of said generator chamber, at least partially embracing said bottom of said gas generator, which is formed at this axial end, and sealing said generator chamber; a grounding strap connected to a vehicle ground connection and arranged at said fastening element.
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15. An air bag unit arrangement comprising:
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a generator chamber having an inner wall; a gas generator fixed at one end and having an opposite end; and a fastening element connected to said opposite end of said gas generator and being pressed into said generator chamber with an outer circumferential surface in contact with said inner wall with said fastening element in an arched position in said generator chamber between an outer wall of said gas generator and said inner wall, whereby said fastening element clings with an outer circumference thereof to said inner wall, at least partially embracing said bottom of said gas generator sealing said generator chamber; a grounding strap connected to a vehicle ground connection and arranged at said fastening element.
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20. An arrangement for fixing a gas generator of an air bag unit with an air bag housing with an inflatable air bag fixed therein, the arrangement comprising:
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a generator chamber connected to the air bag housing, a gas generator connected to a firing unit, as well as a diffuser, for the gas flowing into the air bag from said gas generator if the air bag is fired, said gas generator chamber having an inner wall; and a spring-elastic fastening element, whereby said gas generator is accommodated by said generator chamber and said gas generator is mounted at an axial end thereof, in a fixed bearing, said spring-elastic fastening element being pressed in an area of a free axial end of said gas generator lying opposite said fixed bearing between an outer circumference thereof and an inner circumference of said generator chamber axially overlapping said gas generator, said fastening element in a pretensioned state, arched into said generator chamber in the axial direction in a section between an outer wall of said gas generator and said inner wall of said generator chamber, whereby said fastening element digs with an outer circumference thereof to said inner wall of said generator chamber, at least partially embracing said bottom of said gas generator, which is formed at this axial end, and sealing said generator chamber, said fastening element being completely arranged within said generator chamber.
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Specification