Airbag for a vehicle occupant restraint system and method for producing an airbag
First Claim
1. An airbag for a vehicle occupant restraint system comprising:
- a first chamber and a second chamber, which can he inflated for protection of a vehicle occupant; and
an outflow element with an outflow duct via which gas can flow out of the first chamber, when internal pressure in the first chamber exceeds internal pressure in the second chamber,wherein the outflow duct can be compressed by action of the internal pressure in the second chamber such that an outflow of gas out of the second chamber is counteracted, when the internal pressure in the first chamber is lower than the internal pressure in the second chamber,wherein the outflow element has a two-layer material piece,wherein the two-layer material piece has a folding edge,wherein the outflow duct is formed by folding in a section of the two-layer material piece in a region adjacent an edge of the two-layer material piece, wherein the edge is located at an end of the folding edge, such that the outflow duct comprises a first outflow opening and a second outflow opening,wherein the first outflow opening is located in a plane which is oriented diagonal to an axis of the outflow duct and the second outflow opening is located in a plane which is oriented crosswise to the axis of the outflow duct.
4 Assignments
0 Petitions
Accused Products
Abstract
An airbag for a vehicle occupant restraint system is provided. The airbag comprising a first and a second chamber, which can be inflated for the protection of a vehicle occupant; having an outflow element with an outflow duct via which the gas can flow out of the first chamber when the internal pressure in the first chamber exceeds the internal pressure in the second chamber and which can be compressed under the action of the internal pressure in the second chamber such that an outflow of gas out of the second chamber is counteracted, when the internal pressure in the first chamber is lower than the internal pressure in the second chamber, the outflow element has a two-layer material piece and the outflow duct is formed by folding in a portion of the material piece between the material layers of the material piece.
30 Citations
18 Claims
-
1. An airbag for a vehicle occupant restraint system comprising:
-
a first chamber and a second chamber, which can he inflated for protection of a vehicle occupant; and an outflow element with an outflow duct via which gas can flow out of the first chamber, when internal pressure in the first chamber exceeds internal pressure in the second chamber, wherein the outflow duct can be compressed by action of the internal pressure in the second chamber such that an outflow of gas out of the second chamber is counteracted, when the internal pressure in the first chamber is lower than the internal pressure in the second chamber, wherein the outflow element has a two-layer material piece, wherein the two-layer material piece has a folding edge, wherein the outflow duct is formed by folding in a section of the two-layer material piece in a region adjacent an edge of the two-layer material piece, wherein the edge is located at an end of the folding edge, such that the outflow duct comprises a first outflow opening and a second outflow opening, wherein the first outflow opening is located in a plane which is oriented diagonal to an axis of the outflow duct and the second outflow opening is located in a plane which is oriented crosswise to the axis of the outflow duct. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An airbag for a vehicle occupant restraint system comprising:
-
a first chamber and a second chamber which can be inflated for protection of a vehicle occupant; a first airbag layer and a second airbag layer delimiting the first chamber and the second chamber; and an outflow element via which gas can flow out of the first chamber, when internal pressure in the first chamber exceeds internal pressure in the second chamber, wherein the outflow element blocks an outflow of gas from the first chamber, when the internal pressure in the first chamber is lower than the internal pressure in the second chamber, wherein the outflow element separates the first chamber from the second chamber with a first section that continually blocks passage of gas between the first and second chambers and forms with a second section at least one outflow duct that selectively allows passage of the gas between the first and second chambers, wherein the outflow duct is compressed by action of the internal pressure in the second chamber, when the internal pressure in the second chamber is larger than the internal pressure in the first chamber, and wherein a first region of the first section of the outflow element is connected to the first airbag layer and a second region of the first section of the outflow element is connected to the second airbag layer. - View Dependent Claims (15, 16)
-
-
17. A method for manufacturing an airbag for a vehicle occupant restraint system, comprising the following steps:
-
providing at least one airbag layer for manufacturing a first inflatable chamber and a second inflatable chamber; arranging an outflow element on the airbag layer, which is compressed due to action of internal pressure in the second chamber, when the internal pressure in the second chamber is larger than internal pressure in the first chamber, wherein manufacturing of the outflow element comprises the following steps; providing a two-layer material piece, wherein the two-layer material piece has a folding edge; folding in at least one section of the material piece in a region adjacent an edge of the material piece, wherein the edge is located at an end of the folding edge such that the outflow duct is formed with a first outflow opening and a second outflow opening, and wherein the first outflow opening is located in a plane which is oriented diagonal to an axis of the outflow duct and the second outflow opening is located in a plane which is oriented crosswise to the axis of the outflow duct. - View Dependent Claims (18)
-
Specification