Protective device comprising a gas bag for motor vehicle occupants
First Claim
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1. 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.
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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.
16 Citations
18 Claims
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1. A device for rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for a rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising:
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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. - View Dependent Claims (13)
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14. A device for rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising:
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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. - View Dependent Claims (15)
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16. A device for rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising;
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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. - View Dependent Claims (17)
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18. A device for rapid inflation of a folded gas bag for an occupant impact protection device in motor vehicles, said device comprising:
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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.
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Specification
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Current AssigneeTRW Automotive Safety Systems GmbH & Co. KG
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Original AssigneeTRW Automotive Safety Systems GmbH & Co. KG
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InventorsBraunschädel, Axel
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Primary Examiner(s)Rice, Kenneth R.
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Application NumberUS09/561,009Time in Patent Office487 DaysField of Search280/739US Class Current280/739CPC Class CodesB60R 2021/2633 with a plurality of inflati...B60R 2021/2648 comprising a plurality of c...B60R 2021/2765 comprising means to control...B60R 21/2644 using only solid reacting s...B60R 21/276 with means to vent the infl...
