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Seat belt retractor and seat belt device

  • US 20060231664A1
  • Filed: 04/12/2006
  • Published: 10/19/2006
  • Est. Priority Date: 04/14/2005
  • Status: Abandoned Application
First Claim
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1. A seat belt retractor comprising:

  • a spool for retracting and withdrawing a seat belt;

    an electric motor;

    a power transmission mechanism that is interposed between the electric motor and the spool, wherein the power transmission mechanism is configured to form a connected state in which the electric motor and the spool are connected to each other and a disconnected state in which the connected state is released; and

    a control unit for controlling the electric motor and the power transmission mechanism, wherein the spool is configured to be controlled to rotate in a seat belt retracting direction so as to retract the seat belt in the connected state of the power transmission mechanism when the electric motor is driven to be rotated in a first direction, and wherein the control unit is configured to control the electric motor so that the electric motor is rotated in a second direction at an operational sound reducing speed when the power transmission mechanism is switched from the connected state to the disconnected state.

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