Patent ID: 6669132
Filing Date: 2003-12-30
Classification: B60R

Abstract:
A webbing retractor comprising:(a) a webbing belt; (b) a rotatable spool for winding the webbing belt; (c) a locking element provided at one axial-direction side of the spool for locking rotation of the spool in a webbing pay-off direction; and (d) an energy absorbing structure comprising a torsion bar and a shear element including a plurality of spaced apart shear ribs provided between the spool and the locking element for coupling the spool and the locking element so as to allow rotation of the spool in the pay-off direction under heavy strain, said shear ribs being arranged to shear sequentially when the spool rotates in the pay-off direction, the first of said shear ribs having the largest shear resistance.