Airbag system for vehicle

An airbag system for a vehicle comprising:

• a plurality of airbag modules disposed at a roof of a vehicle, allowing a cushion to be deployed toward an indoor space of the vehicle when deployed, and arranged to correspond to respective seats of the vehicle;
• at least one actuator configured to move an airbag module of the plurality of airbag modules in a longitudinal or lateral direction of the vehicle and to rotate the airbag module in place;
• and
• a controller configured to:
• control the at least one actuator to move the airbag module corresponding to a matched seat of the vehicle when a position of the seat or a reclined angle of a seatback is changed, and to rotate the airbag module when an orientation angle of the seat is changed, and
• control the cushion of the airbag module to be deployed when a vehicle collision occurs,
• wherein the at least one actuator includes:
• a base on which the airbag module is disposed;
• a slider configured to move the airbag module in the longitudinal or lateral direction of the vehicle;
• and
• a rotary actuator configured to rotate the airbag module in place at the base,
• wherein the slider includes:
• a first slider, comprising a first actuator disposed at one side thereof, configured to move the base by a movement of the first actuator and to move the airbag module in the longitudinal direction of the vehicle;
• and
• a second slider, comprising a second actuator disposed at another side thereof, configured to move the airbag module in the lateral direction of the vehicle by a movement of the second actuator, and
• wherein the at least one actuator further includes guides spaced apart from the first slider and disposed at both sides of the first slider, and each of the guides has a rail structure and both sides of the base are respectively fastened to the guides.