Check valve for airbag and airbag device
First Claim
1. A check valve for an airbag disposed in an airbag device having an airbag that is normally folded and that is inflated and deployed in an emergency, and an inflator that supplies gas to the airbag, the airbag having first, second and third inflation chambers, and further having a duct portion including a first duct portion connecting with the first inflation chamber, a second duct portion connecting with the second inflation chamber and a third duct portion connecting with the third inflation chamber, the check valve for an airbag comprising:
- a tubular portion fixed to the first duct portion; and
a pair of tongue-shaped portions connected to and extending in different directions from the tubular portion with one tongue-shaped portion located in the second duct portion and the other tongue-shaped portion located in the third duct portion, wherein the tubular portion and the duct portion have a gap therebetween, and the tubular portion has an end opposite to the tongue-shaped portions and a first sealing portion where the end of the tubular portion opposite to the tongue-shaped portions and the duct portion are sewn together, and a second sealing portion where an intermediate portion between the plurality of tongue-shaped portions and the duct portion are sewn together, and the gap between the tubular portion and the duct portion is sealed.
5 Assignments
0 Petitions
Accused Products
Abstract
Provided are a check valve for an airbag and an airbag device that can improve the reproducibility of the flow path blocking function while reducing the resistance upon inflation and deployment of the airbag and that can be applied to a place where a flow path is divided into a plurality of flow paths. A first embodiment of an airbag device according to the present invention has an airbag that is normally folded and that is inflated and deployed in an emergency, and an inflator that supplies gas to the airbag. The airbag has a plurality of inflation chambers, a duct portion disposed so as to connect the plurality of inflation chambers, and a check valve for an airbag having a tubular portion sewn to the duct portion, and tongue-shaped portions formed at the tip of the tubular portion.
22 Citations
6 Claims
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1. A check valve for an airbag disposed in an airbag device having an airbag that is normally folded and that is inflated and deployed in an emergency, and an inflator that supplies gas to the airbag, the airbag having first, second and third inflation chambers, and further having a duct portion including a first duct portion connecting with the first inflation chamber, a second duct portion connecting with the second inflation chamber and a third duct portion connecting with the third inflation chamber, the check valve for an airbag comprising:
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a tubular portion fixed to the first duct portion; and a pair of tongue-shaped portions connected to and extending in different directions from the tubular portion with one tongue-shaped portion located in the second duct portion and the other tongue-shaped portion located in the third duct portion, wherein the tubular portion and the duct portion have a gap therebetween, and the tubular portion has an end opposite to the tongue-shaped portions and a first sealing portion where the end of the tubular portion opposite to the tongue-shaped portions and the duct portion are sewn together, and a second sealing portion where an intermediate portion between the plurality of tongue-shaped portions and the duct portion are sewn together, and the gap between the tubular portion and the duct portion is sealed. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification