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Seat Belt Retractor, Control Method Thereof, and Seat Belt Device

  • US 20070295852A1
  • Filed: 10/19/2005
  • Published: 12/27/2007
  • Est. Priority Date: 10/19/2004
  • Status: Active Grant
First Claim
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1. A seat belt retractor comprising:

  • a spindle winding a webbing;

    a power generation means which generates power for rotating the spindle in a desired direction;

    a power transmission means that enables transmission of the power of the power generation means to the spindle when the power generation means generates the power for rotating the spindle in a winding direction of the webbing, and also disables transmission of the power of the power generation means to the spindle when the power generation means generates a power in a direction opposite to the power for rotating the spindle in the winding direction;

    a control means which drives and controls the power generation means;

    a stop state detecting means which detects that a driving signal is not inputted to the power generation means; and

    a drawing-direction rotation detecting means which detects that the power generation means is rotating in the drawing direction of the webbing, wherein the control means drives and controls the power generation means to rotate in the drawing direction of the webbing, when the stop state detecting means detects that the driving signal is not inputted to the power generation means and the drawing direction detecting means detects that the power generation means is rotating in the drawing direction of the webbing.

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