Patent ID: 8579324

Claim:
A side airbag apparatus comprising: a main chamber that is provided on a side of a seat and aligned toward a door to be deployed theretoward when a vehicle collides, to protect a passenger from a side directional collision; an auxiliary chamber that is connected to a rear part of the main chamber to be fluid-communicated to each other, wherein the auxiliary chamber is provided on a side of the main chamber toward the inside of the seat to push the passenger toward the inside of the seat when the auxiliary chamber is deployed; and a volume control tether provided in the rear part of the main chamber, wherein both ends of the volume control tether are fixed to facing-inner walls of the main chamber, respectively to restrict a deployment width of the rear part of the main chamber; wherein a baffle is provided on the main chamber for dividing an internal part of the main chamber into an upper part and a lower part, and an opening through which a gas flows up-downward is provided through the baffle; and wherein a rear part of the baffle is connected to the volume control tether and a front part thereof is inclined downward.