Gas bag restraint system for vehicle occupants
First Claim
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1. A gas bag restraint system for vehicle occupants, comprising:
- a gas bag with an interior having a first and a second chamber, said gas bag having an outer wall delimiting said interior of said gas bag and at least one dividing wall in said interior for permanently separating said first and said second chambers, said dividing wall being gas-permeable at least while said gas bag is inflating to reach a fully inflated state of said gas bag, a multiple-stage gas generator which is permanently communicated with said first chamber and which is able to produce different internal pressures of said gas bag, and holding means which prevent unfolding of a part of said outer wall delimiting said second chamber before reaching a predetermined internal pressure of said gas bag, and which permit full inflation of said second chamber after said predetermined internal pressure of said gas bag has been reached.
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Abstract
A gas bag restraint system for vehicle occupants, comprises a gas bag with an interior having a first and a second chamber. The gas bag has an outer wall delimiting the interior of the gas bag and at least one dividing wall in the interior for separating the first and the second chambers in a fully inflated state of the gas bag. The dividing wall is gas-permeable at least during fully inflating of the gas bag to reach a fully inflated state of the gas bag. The system further comprises a multiple-stage gas generator which is communicated with the first chamber and which is able to produce different internal pressures of the gas bag.
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Citations
20 Claims
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1. A gas bag restraint system for vehicle occupants, comprising:
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a gas bag with an interior having a first and a second chamber, said gas bag having an outer wall delimiting said interior of said gas bag and at least one dividing wall in said interior for permanently separating said first and said second chambers, said dividing wall being gas-permeable at least while said gas bag is inflating to reach a fully inflated state of said gas bag, a multiple-stage gas generator which is permanently communicated with said first chamber and which is able to produce different internal pressures of said gas bag, and holding means which prevent unfolding of a part of said outer wall delimiting said second chamber before reaching a predetermined internal pressure of said gas bag, and which permit full inflation of said second chamber after said predetermined internal pressure of said gas bag has been reached. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
state of belt application;
impact intensity of the vehicle in the case of a collision;
weight of a vehicle occupant who is to be restrained;
position of a vehicle occupant who is to be restrained, in said longitudinal direction of said vehicle; and
position of a vehicle occupant who is to be restrained, transversely to said longitudinal direction of said vehicle.
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15. The gas bag restraint system according to claim 14, wherein said sensors are several ultrasonic sensors arranged in said vehicle, which determine the position of said vehicle occupant.
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16. The gas bag restraint system according to claim 15, wherein said sensors scan at least the position of one of the following body parts of the occupant:
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head and upper body;
chest and pelvis; and
thigh region.
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17. The gas bag restraint system according to claim 1, wherein said outer wall of said gas bag is a blank cut in one piece.
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18. The gas bag restraint system according to claim 1, wherein said gas bag has an inflation orifice delimited by a rim of said gas bag, and wherein said dividing wall has a section reinforcing said rim.
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19. The gas bag restraint system according to claim 1, wherein said dividing wall is permanently gas-permeable.
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20. The gas bag restraint system according to claim 1, wherein several dividing walls separating more than two chambers are provided.
Specification