ELECTROMAGNETIC CLUTCH ASSEMBLY

摘要

The invention relates to an electromagnetic clutch assembly comprising a magnetic rotor rotatable about an axis and having a disk-shaped portion, a magnetic armature rotatable about said axis and having a disk-shaped portion for engagement with said sisk-shaped portion of said rotor. According to the invention said clutch is characterized by means for reducing the audible noise resulting from the vibration of said rotor and/or said armature upon clutch engagement including flux gaps in said rotor and armature which define segments and bridge areas in the disk-shaped portions of said rotor and armature wherein neither all of the said segments or all of said bridge areas on said armature and/or said rotor have the same resonant frequency.