Curtain airbag
First Claim
1. A curtain airbag that is housed in an upper portion of a side surface inside a vehicle cabin and is adapted to be inflated and deployed upon deployment along the side surface for protecting an occupant, wherein the side surface includes a front pillar, a front side window, a center pillar, a rear side window, and a rear pillar in a vehicle front-rear direction, the curtain airbag comprising:
- a main chamber having a protection area to protect the occupant, the main chamber receiving an inflation and deployment gas from an inflator and being inflated and deployed mainly along a side window of a vehicle; and
a first chamber in fluid communication with the main chamber prior to deployment and overlapping an upper edge of the side window of the vehicle when inflated and deployed upon receiving the inflation and deployment gas, whereinthe first chamber is configured to extend by being inflated and deployed toward an upper side of the main chamber along the upper portion of the side surface inside the vehicle cabin during the deployment of the curtain airbag, wherein the first chamber extends in front of the center pillar between two tabs that are adjacent to each other and in front of the inflator in the vehicle front-rear direction and, in an inflated state, overlaps a protrusion of a welded portion protruding from the side surface toward the inside of the vehicle cabin, andthe main chamber includes a second chamber that is positioned adjacent a below portion of the first chamber so as to overlap a vehicle beltline when inflated and deployed upon receiving the inflation and deployment gas;
wherein the curtain airbag has a stored state, in which the first chamber is folded over toward a vehicle interior side in a location of reaching an upper end of the first chamber.
1 Assignment
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Accused Products
Abstract
A curtain airbag capable of applying tension in a vertical direction to improve occupant ejection mitigation performance. The curtain airbag is housed in an upper portion of a side surface inside a vehicle cabin and deployed along the side surface. The curtain airbag includes: a main chamber having a protection area for the occupant, and receiving an inflation gas and being inflated along a side window of a vehicle; a first chamber that overlaps an upper edge of the side window of the vehicle, the first chamber extends by being deployed toward an upper side of the main chamber along the upper portion of the side surface inside the vehicle cabin. The main chamber includes a second chamber positioned in a below portion of the first chamber to overlap the vehicle beltline upon deployment.
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Citations
19 Claims
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1. A curtain airbag that is housed in an upper portion of a side surface inside a vehicle cabin and is adapted to be inflated and deployed upon deployment along the side surface for protecting an occupant, wherein the side surface includes a front pillar, a front side window, a center pillar, a rear side window, and a rear pillar in a vehicle front-rear direction, the curtain airbag comprising:
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a main chamber having a protection area to protect the occupant, the main chamber receiving an inflation and deployment gas from an inflator and being inflated and deployed mainly along a side window of a vehicle; and a first chamber in fluid communication with the main chamber prior to deployment and overlapping an upper edge of the side window of the vehicle when inflated and deployed upon receiving the inflation and deployment gas, wherein the first chamber is configured to extend by being inflated and deployed toward an upper side of the main chamber along the upper portion of the side surface inside the vehicle cabin during the deployment of the curtain airbag, wherein the first chamber extends in front of the center pillar between two tabs that are adjacent to each other and in front of the inflator in the vehicle front-rear direction and, in an inflated state, overlaps a protrusion of a welded portion protruding from the side surface toward the inside of the vehicle cabin, and the main chamber includes a second chamber that is positioned adjacent a below portion of the first chamber so as to overlap a vehicle beltline when inflated and deployed upon receiving the inflation and deployment gas; wherein the curtain airbag has a stored state, in which the first chamber is folded over toward a vehicle interior side in a location of reaching an upper end of the first chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A curtain airbag that is housed in an upper portion of a side surface inside a vehicle cabin in a stored state and is inflated and deployed along the side surface for protecting an occupant, comprising:
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a main chamber having a protection area to protect the occupant, the main chamber receiving an inflation and deployment gas and being inflated and deployed mainly along a side window of the vehicle; and a first chamber in fluid communication with the main chamber, the first chamber being inflated and deployed upon receiving the inflation and deployment gas, wherein the first chamber is provided at such a position that, when inflated upon receiving the inflation and deployment gas, the first chamber extends upward from and above the main chamber between two fastening tabs and covers at least a portion of a coupling portion bridging a gap between a front end of a roof side rail and a rear end of a roof front rail so as to overlap a protrusion of the coupling portion protruding from the side surface toward the inside of the vehicle cabin, wherein the roof side rail is positioned between a ceiling of the vehicle and the side window above the main chamber so as to extend in a vehicle front-rear direction and the roof front rail is positioned on a vehicle front side of the ceiling so as to extend in a vehicle width direction, wherein the first chamber is folded over toward a vehicle interior side in a location of reaching an upper end of the first chamber while in the stored state. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A curtain airbag that is housed in an upper portion of a side surface inside a vehicle cabin and is adapted to be inflated and deployed upon deployment along the side surface for protecting an occupant, wherein the side surface includes a front pillar, a front side window, a center pillar, a rear side window, and a rear pillar in a vehicle front-rear direction, the curtain airbag comprising:
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a main chamber having a protection area to protect the occupant, the main chamber receiving an inflation and deployment gas from an inflator and being inflated and deployed mainly along a side window of a vehicle; and a first chamber that overlaps an upper edge of the side window of the vehicle when inflated and deployed upon receiving the inflation and deployment gas, wherein the first chamber is configured to extend by being inflated and deployed toward an upper side of the main chamber along the upper portion of the side surface inside the vehicle cabin during the deployment of the curtain airbag, wherein the first chamber extends in front of the center pillar between two tabs that are adjacent to each other and in front of the inflator in the vehicle front-rear direction and, in an inflated state, overlaps a protrusion of a welded portion protruding from the side surface toward the inside of the vehicle cabin, wherein the first chamber is configured to protect the head of the occupant during a frontal impact in a small-overlap crash, and wherein the main chamber includes a second chamber that is positioned adjacent a below portion of the first chamber so as to overlap a vehicle beltline when inflated and deployed upon receiving the inflation and deployment gas, wherein the curtain airbag has a stored state, in which the first chamber is folded downward toward a vehicle interior side from a seam portion, which partitions the first chamber from the second chamber, and is folded over upward toward a vehicle exterior side along a line midway from the seam portion to an upper end of the first chamber.
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Specification