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Seat belt retractor

  • US 20060175453A1
  • Filed: 01/27/2006
  • Published: 08/10/2006
  • Est. Priority Date: 02/09/2005
  • Status: Abandoned Application
First Claim
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1. A seat belt retractor comprising:

  • a spool capable of winding and unwinding a seat belt;

    an electric motor;

    a power transmission mechanism configured to transmit the power of the electric motor to the spool in order to achieve the winding action and the unwinding action of the spool;

    a detection sensor configured to detect information about behavior of a spool-side member; and

    a control mechanism configured to switch the power transmission mechanism between a power transmission engaging state in which the power of the electric motor is transmitted to the spool and the power transmission disengaging state in which the power transmission is cancelled, wherein the control mechanism controls the seat belt retractor to be in the power transmission engaging state to perform the seat belt winding action when the control mechanism determines, based on information about behavior of the spool-side member detected by the detection sensor, that the seat belt storing operation is needed.

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