DEVICE FOR INITIATING THE BLOCKING OF A REEL SHAFT FOR A SAFETY BELT WINDING-UP AUTOMAT

摘要

A device for blocking the shaft of a safety belt mechanism in which the blocking of the shaft is initiated in response to acceleration of the shaft in pay-out direction. An inertia responsive disc element is mounted on the shaft and movement thereof on the shaft initiates blocking of the shaft. To augment the inertia effect a magnet adjacent the disc provides a retarding effect thereon by the magnetic field from the magnet or by eddy currents in the disc induced therein by the field.