DRIVE UNIT AND PERSONAL-CARE DEVICE WITH A DRIVE UNIT

A drive unit for converting a rotational motion into a linear reciprocating motion includes a motor shaft extension having at least a first eccentric shaft element moving in a circle around the motor shaft's longitudinal axis and in a plane perpendicular thereto and at least one elastically deformable unit having a coupling element for coupling with a driven element. The first eccentric shaft element is coupled with the deformable unit to periodically deform the deformable unit so that a longitudinal position of the motor shaft of the coupling element of the deformable unit periodically changes. The deformable unit has a first arm section and a second arm section, each having a first end and a second end. The second end of the first arm section is connected to the first end of the second arm section, wherein the first end of the first arm section is connected to a mounting structure fixed relative to the motor. The second end of the second arm section is arranged with a distance to the first end of the first arm section in the direction of the longitudinal axis of the motor shaft.