Vehicle occupant restraint system including a rollover sensor which controls movement of a seat back and also the operation of an inflatable seat belt

摘要

An occupant restraint system 11 for an automotive vehicle 10 includes a rollover sensor 30 which generates a rollover signal in a rollover condition. A seat 12 with a seat base 16 rotatably coupled to a seat back 18 may be included in the restraint system. A controller 26 is coupled to the sensor and seat base. The controller controls the seat back to rotate rearwardly and downward relative to the seat base in response to the rollover signal. The controller may also control the deployment operation of an inflatable seat belt 36 to maintain the occupant's position relative to the seat back. The arrangement increases the amount of occupant headroom during a rollover event.