Electric power assisted drive, in particular a wiper drive

A wiper drive, comprising:

• a wiper motor assembly, the wiper motor assembly comprising:
• an electromotive auxiliary drive comprising:
• an electric motor;
• and
• a downstream gear stage comprising:
• an output shaft of the auxiliary drive, and
• at least two gear stages arranged in series in a drive train between the electric motor and the output shaft, of which a first gear stage comprises a worm and a worm wheel gear element interacting with the worm,
• wherein a first gear element of a second gear stage is placed concentrically on top of the worm wheel gear element of the first gear stage, and
• wherein the first gear element of the second gear stage contacts a partial gear mounted on the output shaft, wherein the partial gear is a gearwheel segment limited to an angle of less than 270°;
• and
• a wiper element comprising a wiper arm, wherein the output shaft drives the wiper arm.