Patent ID: 7581752
Filing Date: 2009-09-01
Classification: B60R

Abstract:
1. An airbag apparatus for attachment to a vehicle seat including a seat cushion for supporting a vehicle occupant thereon, and a seat back operatively attached to the seat cushion, said airbag apparatus comprising: an airbag having a first expansion chamber provided at a first region thereof, a second expansion chamber provided at a second region thereof, and a primary dividing wall separating the first and second expansion chambers; said airbag having a deployed configuration in which an upper portion thereof overlaps part of the seat back, and a lower portion thereof overlaps part of the seat cushion as seen from a side view thereof; and a gas supplying part for supplying gas to the first and second expansion chambers to cause the expansion chambers to expand; wherein the second expansion chamber comprises a balancing expansion chamber which is configured and arranged to help stabilize the airbag during expansion thereof; wherein the primary dividing wall is made sufficiently strong to remain in place during deployment of the airbag; and wherein the second expansion chamber is disposed at a lower part of the airbag, the gas supplying part is disposed on a side part of the airbag, and the balancing expansion chamber is positioned at a side of the airbag and provided at a lower part of the second expansion chamber.