Patent ID: 8579223

Claim:
A self-locking belt retractor for motor vehicles including a vehicle-sensitive and a belt-webbing-sensitive control system for a blocking arrangement of the belt retractor with a blocking catch to be guided into a toothing fixed to a housing, the control system comprising: a control disc coupled to the blocking catch and rotatable with a belt shaft, the control disc having an inertial mass mounted thereon for swiveling motion for forming a belt-webbing-sensitive control, the inertial mass being deflectable into a blocking position for the control disc, wherein the control disc further includes an outer toothing for engaging a sensor lever arranged on a vehicle sensor; at least one locking lever controllable by rotation of the belt shaft, the at least one locking lever being mounted on the control disc for swiveling motion and movable between an activation position and a cutoff position, wherein the locking lever is in the cutoff position in a functional range of the safety belt webbing, in which at most a predetermined amount of safety belt webbing is wound on the belt shaft; wherein a switching operation of the locking lever into the cutoff position disables the vehicle sensor and secures the inertial mass in a disabling position, the disabling position being different than the blocking position, wherein the control disc is constructed as a two-part structure comprising a first part and a second part, the first part including a rotatable platform coupled to the belt shaft, the rotatable platform being configured as a carrier for the inertial mass and the locking lever, and the second part including an outer ring rotatable with respect to the platform, the outer ring having an inner toothing for engaging the locking lever in the activation position, and the outer toothing for engaging the sensor lever of the vehicle sensor, the outer ring being disengaged from the locking lever and freely rotatable relative to the rotatable platform over an unlimited angular range when the locking lever is in the cutoff position.