Patent attributes
A side airbag deployment direction control structure includes an airbag module installed at the vehicle width direction outer side of a door-side side frame portion. During inflation and deployment of a side airbag of airbag module, a stitched portion between a front cover and a front side cover of a seat cover ruptures under inflation pressure of the side airbag. This forms an opening for the side airbag to inflate and deploy to the outer side of a seatback. Note that the stitched portion is provided further to the seat width direction inner side than a center of the inflator. Further, a reaction force plate is positioned at the vehicle width direction outer side of the airbag module and includes a side reaction force face of which a front end portion extends further toward the vehicle front side than the airbag module and the door-side side frame portion.