Adaptive gas generator for airbag
AssigneeAutoliv Development AB
InventorsMats JOHANSON, Tobias ADERUM
Life of this patent
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Abstract
A gas generator for a protective airbag includes at least one pressurized gas chamber, a first actuator arranged so as to open the pressurized gas chamber, and a diffusion chamber including at least one diffusion hole defining a communication surface. Outside the diffusion chamber, the gas generator includes an obturator having a second actuator. The obturator is arranged in a first position in which it defines a first diffusion surface. The second actuator is arranged so as to allow it to go into a second position in which it defines a second diffusion surface.
Claims14
A gas generator for an airbag comprising:
- at least one pressurized gas chamber;
- a first actuator for opening the gas pressurized gas chamber;
- a diffusion chamber including a communication surface arranged for diffusing gases from the at least one pressurized gas chamber towards the airbag;
- and
- an obturator located outside the diffusion chamber and including a second actuator, the obturator arranged so as to be locked in a first position in which the obturator and the communication surface cooperate to define a first diffusion surface;
- wherein the second actuator is arranged for unlocking the obturator in order to allow the obturator to go into a second position in which the obturator and communication surface cooperate to define a second diffusion surface area greater than the first diffusion surface area.
An automobile safety module comprising:
- an airbag;
- and
- a gas generator in communication with the airbag, the gas generator including:
- at least one pressurized gas chamber;
- a first actuator for opening the gas pressurized gas chamber;
- a diffusion chamber including a communication surface arranged for diffusing gases from the at least one pressurized gas chamber towards the airbag;
- and
- an obturator located outside the diffusion chamber and including a second actuator, the obturator arranged so as to be locked in a first position in which the obturator and the communication surface cooperate to define a first diffusion surface;
- wherein the second actuator is arranged for unlocking the obturator in order to allow the obturator to go into a second position in which the obturator and communication surface cooperate to define a second diffusion surface area greater than the first diffusion surface area.
Dependencies are inferred from the claim text.