Occupant protection device for car, has airbag including central chamber, two outer lower chambers and two outer upper chambers, where chambers are filled with air such that chambers have different internal pressure

摘要

The device has an airbag (3) associated with a knee portion of a vehicle occupant, where the airbag includes fillable chambers such as central chamber (3.1), two outer lower chambers (3.2), and two outer upper chambers (3.3). The chambers are filled with air such that the chambers have different internal pressure, where the central chamber has high internal pressure, the outer lower chambers have medium internal pressure, and the outer upper chambers have low internal pressure after filling.