Patent ID: 7516808
Filing Date: 2009-04-14
Classification: B60R

Abstract:
1. A seat belt retractor to be installed in a vehicle comprising: an electric motor; a spool capable of winding and unwinding a seat belt for occupant restraint according to a driving of the electric motor; and a controller for controlling the electric motor, wherein the controller is configured to perform a control mode in which the electric motor is controlled to rotate in a belt winding direction based on a status of a wearing of the seat belt on a vehicle occupant and a status of a vehicle door corresponding to the seat belt, and wherein the controller is configured to perform a control mode in which the electric motor is controlled not to rotate in the belt winding direction when the wearing of the seat belt is cancelled and the vehicle door corresponding to the seat belt is either in a closed state or is not changed from a closed state to an open state.