Airbag for a vehicle occupant restraint system
First Claim
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1. An airbag (20) for a vehicle occupant restraint system, comprising:
- a first fabric layer (10) and an opposed second fabric layer (12), each being formed of a composite fabric of wefts and warps and delimiting a chamber (14) adapted to be filled with gas,wherein plural weaving threads (16) are provided which are fixed at their ends to one of the fabric layers or to a border area of the airbag where the fabric layers are connected, and wherein weaving threads exit the composite fabric of a fabric layer (10, 12) in the direction of the other fabric layer (12, 10) at plural of inlet and outlet points and are freely floating in the chamber (14) before they enter into the composite fabric of the other fabric layer (12, 10),and wherein the weaving threads (16) are movable in their longitudinal direction relative to the inlet and outlet points and arranged to reduce the length of the airbag in the direction along which the weaving threads extend when the airbag is inflated.
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Abstract
An airbag (20) for a vehicle occupant restraint system comprises a first fabric layer (10) and an opposed second fabric layer (12) each being formed of a composite fabric of wefts and warps and delimiting a chamber (14) adapted to be filled with gas. Plural weaving threads (16) are provided which exit the composite fabric of a fabric layer (10, 12) in the direction of the other fabric layer (12, 10) and are freely floating in the chamber (14) before they enter into the composite fabric of the other fabric layer (12, 10). The weaving threads (16) are movable in their longitudinal direction relative to the inlet and outlet points.
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Citations
12 Claims
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1. An airbag (20) for a vehicle occupant restraint system, comprising:
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a first fabric layer (10) and an opposed second fabric layer (12), each being formed of a composite fabric of wefts and warps and delimiting a chamber (14) adapted to be filled with gas, wherein plural weaving threads (16) are provided which are fixed at their ends to one of the fabric layers or to a border area of the airbag where the fabric layers are connected, and wherein weaving threads exit the composite fabric of a fabric layer (10, 12) in the direction of the other fabric layer (12, 10) at plural of inlet and outlet points and are freely floating in the chamber (14) before they enter into the composite fabric of the other fabric layer (12, 10), and wherein the weaving threads (16) are movable in their longitudinal direction relative to the inlet and outlet points and arranged to reduce the length of the airbag in the direction along which the weaving threads extend when the airbag is inflated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An airbag for a vehicle occupant restraint system, comprising:
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a first fabric layer and an opposed second fabric layer, each being formed of a composite fabric of wefts and warps and having portions woven together along a border area that together with the first and second fabric layers delimits a chamber adapted to be filled with gas, wherein plural weaving threads are provided which are fixed at their ends adjacent or near the border area, and wherein weaving threads extend back and forth in a zigzag manner between the fabric layers, passing through loops in formed by threads in the fabric layers, the weaving threads being freely floating in the chamber between the fabric layers and freely moveable through the loops, and wherein the weaving threads are adapted to move through the loops in response to the fabric layers moving apart from each other due to airbag inflation, which reduces the length of the airbag. - View Dependent Claims (11, 12)
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Specification