Automative passenger restraint and protection apparatus and seatbelt protraction and retraction amount-detecting device

摘要

A seat belt retractor has an electric motor 10 with driving means 11 to retract and protract the seat belt, an air bag 57, a pretensioner 58, means for detecting the speed of protraction of the belt, and control means to control the belt, pretensioner or air bag, based on the protraction speed.