Occupant protection device

An occupant protection device for a vehicle, the occupant protection device comprising:

• a collision predictor configured to predict a collision of the vehicle;
• a main airbag configured to deploy in a deployment direction toward an occupant from a front of the vehicle when a collision of the vehicle is predicted by the collision predictor, the main airbag comprising a first deployment part, an arm-push-away deployment part, and a second deployment part;
• and
• a deployment controller configured to cause the main airbag to deploy toward the occupant when a collision of the vehicle is predicted by the collision predictor, wherein
• the deployment controller is configured to, when the collision of the vehicle is predicted by the collision predictor, cause the first deployment part to deploy to cause the main airbag to be in a first deployment state, subsequently cause the arm-push-away deployment part to deploy to push arms of the occupant away to cause the main airbag to be in an arm-push-away state, and thereafter, cause the second deployment part to deploy to cause the main airbag to be in a second deployment state,
• wherein, in the arm-push-away state, the arm-push-away deployment part comprises, at an end of the main airbag in the deployment direction, a protruding part disposed under the first deployment part and protruded from the first deployment part,
• wherein the protruding part is configured as to enter into a region between the arms of the occupant to move the arms outside a space defined between the first deployment part and an upper body of the occupant while the main airbag is in the arm-push-away state after the first deployment state, and
• wherein the main airbag is configured as to not restrain the occupant in the first deployment state and the arm-push-away state, and to deploy up to a position to restrain the occupant in the second deployment state.