US Patent 11584326 Roof airbag system and vehicle

A roof airbag system includes a roof airbag, a lifting mechanism, a collision sensor, memory, and a processor coupled to the memory. The roof airbag is provided at a roof portion of a vehicle, receives a supply of gas from an inflator and deploys toward an upper body side of a vehicle occupant sitting on a vehicle seat. The lifting mechanism is provided at a seat cushion side of the vehicle seat and lifts a thigh area of the vehicle occupant. A collision sensor detects a collision of the vehicle. The processor is configured to, when a seat back of the vehicle seat is tilted more than a predetermined angle to the seat rear side and the collision sensor detects a collision of the vehicle, control the lifting mechanism to lift the thigh area of the vehicle occupant and control operation of the inflator to deploy the roof airbag.