Patent ID: 6318662
Filing Date: 2001-11-20
Classification: B60R

Abstract:
A webbing winding device having a pre-tensioner for tensioning a webbing for restraining a passenger in a passenger restraining direction in an emergency deceleration of a vehicle, said webbing winding device comprising:a winding shaft to which an end of said webbing is fixed; anda gear train mechanism comprising a plurality of gears arranged in such a manner that adjacent gears mesh with each other, wherein an external driving gear of said gear train receiving a driving force when said pre-tensioner is actuated is driven from a preliminarily set starting end position to a terminal end position so as to rotate said winding shaft in a direction for retracting the webbing and when the driving of said driven gear is completed, at least a pair of adjacent, engaged gears of said gear train are moved relative to each other in a radial direction relative to said winding shaft to a disengaging position so as to enable said winding shaft to continue to be rotated in the direction for retracting the webbing by inertial force.