SELF-LOCKING BELT RETRACTOR

A self-locking belt retractor comprising a belt shaft which is rotatably mounted in a frame, wherein a safety belt can be wound up said belt shaft, a blocking device which blocks the belt shaft if a predetermined feed-out acceleration of the safety belt in the feed-out direction of the safety belt is exceeded, and comprising a control disc device mounted on the belt shaft, the control disc device comprising a control disc and an inert mass which is mounted on the control disc so as to be pivotable about a pivot axis.