Protective device comprising a gas bag for motor vehicle occupants
AssigneeTRW Automotive Safety Systems GmbH
InventorAxel Braunschädel
Life of this patent
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Abstract
The invention relates to a device for rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles. The device comprises a housing, a pyrotechnic propellant within the housing for generating filling gases, and an ignition device. The housing is equipped with a passage serving as an outflow duct for the filling gases from the gas bag, a cross-section of the passage being adapted to be exposed at least in part after an activation of the device.
Claims18
A device for rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising:
- a housing,
- a pyrotechnic propellant within said housing for generating filling gases,
- an ignition device,
- said housing being equipped with a passage serving as an outflow duct for said filling gases from said gas bag, a cross-section of said passage being adapted to be exposed at least in part after an activation of said device,
- an actuator by means of which said passage is closed, said passage, after an activation of said device, being able to be opened by said actuator at least in part as a function of at least one of occupant specific, vehicle specific and crash specific values, and
- said actuator comprising a slide valve and an actuating drive in the form of a pyrotechnic actuating drive.
A device for a rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising:
- a housing,
- a pyrotechnic propellant within said housing for generating filling gases,
- an ignition device,
- said housing being equipped with a passage serving as an outflow duct for said filling gases from said gas bag, a cross-section of said passage being adapted to be exposed at least in part after an activation of said device,
- a rupture membrane having a defined strength closing said passage,
- a closure device arranged upstream of said rupture membrane, said closure device during filling of said gas bag being closed by a pressure of said pyrotechnic filling gases against a restoring force and opening automatically after termination of a filling process.
A device for rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising:
- a housing,
- a pyrotechnic propellant within said housing for generating filling gases,
- an ignition device,
- said housing being equipped with a passage serving as an outflow duct for said filling gases from said gas bag, a cross-section of said passage being adapted to be exposed at least in part after an activation of said device,
- an actuator by means of which said passage is closed, said passage, after an activation of said device, being able to be opened by said actuator at least in part as a function of at least one of occupant specific, vehicle specific and crash specific values,
- a closure device arranged upstream of said actuator, said closure device during filling of said gas bag being closed by a pressure of said pyrotechnic filling gases against a restoring force and opening automatically after termination of a filling process.
A device for rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising;
- a housing,
- a pyrotechnic propellant within said housing for generating filling gases,
- an ignition device,
- said housing being equipped with a passage serving as an outflow duct for said filling gases from said gas bag, a cross-section of said passage being adapted to be exposed at least in part after an activation of said device,
- said housing defining a cylindrical annular space with a base region and a cover region,
- said cylindrical annular space having a plurality of gas outlet openings which are constructed so as to be running obliquely upwards toward said gas bag and wherein a screen-like retainer device is arranged upstream of them.
A device for rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising:
- a housing,
- a pyrotechnic propellant within said housing for generating filling gases,
- an ignition device,
- said housing being equipped with a passage serving as an outflow duct for said filling gases from said gas bag, a cross-section of said passage being adapted to be exposed at least in part after an activation of said device,
- said passage being defined by an outflow duct having an end facing said gas bag which end is equipped with a diffuser.
Dependencies are inferred from the claim text.