Gas generator, in particular for a vehicle occupant protection system, spring for arranging in a gas generator, airbag module, and vehicle occupant protection system
AssigneeTRW Airbag Systems GmbH
InventorsAnja Esau, Anton Greissl
Life of this patent
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Abstract
The invention relates to a gas generator (10), in particular for a vehicle occupant protection system, comprising at least an igniter (15) and a combustion chamber (17) containing a pyrotechnic solid fuel bed (18), wherein a spring (30) is arranged in the combustion chamber (17), which spring can be elongated in the direction of an end (22) of the combustion chamber (17) remote from the igniter (16) by a gas flow produced when the gas generator (10) is activated. According to the invention, the spring (30) has a plurality of spring segments (31, 32, 33) having outside diameters (Q1, Q2, Q3) of different size.
Claims18
A gas generator (10) for a vehicle occupant protection system, comprising:
- at least an igniter (15) and a combustion chamber (17) containing a pyrotechnic solid fuel bed (18);
- and
- a spring (30) arranged in the combustion chamber (17), the spring being elongatable in a direction of an end (22) of the combustion chamber (17) remote from the igniter (15), the spring (30) having a plurality of spring segments (31, 32, 33) having outside diameters (Q1, Q2, Q3) of different size, each spring segment (31, 32, 33) having a plurality of spring turns, each spring turn of an associated spring segment (31, 32, 33) having the same outside diameter (Q1, Q2, Q3) so that the plurality spring turns of an associated spring segment defines a cylindrically-shaped spring segment.
Dependencies are inferred from the claim text.