Patent ID: 8480128

Claim:
A vehicle side airbag apparatus comprising: an inflator that discharges a gas when a lateral collision of the vehicle occurs; a side airbag that is formed by sewing a passenger-side base fabric to a vehicle body-side base fabric, the side airbag is folded when it is stored and is inflated when gas is supplied from the inflator to be deployed into a space between a passenger seated in a vehicular seat and a vehicle body side portion; and a tether having a front end and a rear end in a longitudinal direction of a vehicle, the front end of the tether is coupled to a middle region of the passenger-side base fabric in the longitudinal direction of the vehicle, and the rear end of the tether is coupled to a rear region of the vehicle body-side base fabric in the longitudinal direction of the vehicle, and the tether partitions the side airbag into a main chamber and a rear chamber, which comes into contact with a rear portion of the passenger when the side airbag is inflated and deployed wherein the passenger-side base fabric is longer than the vehicle body-side base fabric in the longitudinal direction of the vehicle so as to provide the rear chamber with a surplus length of the passenger-side base fabric with respect to the vehicle body-side base fabric.