Patent ID: 8657330

Claim:
A side airbag comprising: an inflator that ejects gas and is provided at a side of a seat; a cushion that is deployed when receiving the gas from the inflator; a diaphragm that divides the cushion into an upper chamber and a lower chamber by partitioning the inside of the cushion along a first axis; a foldable diffuser that supplies the gas ejected from the inflator to the upper chamber and the lower chamber separately; and a blocking portion which divides the upper chamber into a rear portion and a front portion by partitioning the inside of the cushion along a second axis, the blocking portion includes a plurality of communication portions formed there-through, wherein through each of the plurality of communication portions gas is communicated, and wherein the rear portion receives the gas from the inflator and the front portion receives the gas from the rear portion, whereby the rear portion and the front portion are inflated in sequence in the upper chamber when the cushion is deployed.