Door drive device for electromotively adjusting a vehicle door

Abstract

A door drive device for electromotively adjusting a vehicle door comprises an electric motor, a transmission which includes a first gear stage to be driven by the electric motor and a second gear stage operatively connected to the first gear stage, and an output element operatively connected to the second gear stage for outputting an adjusting force for adjusting the vehicle door. The first gear stage includes a first housing part. The second gear stage includes a planetary transmission to be driven by the first gear stage and a second housing part forming a ring gear toothing of the planetary transmission. The transmission includes an intermediate element which is arranged between the first housing part and the second housing part and connects the first housing part and the second housing part with each other in a torque-resistant manner.

Dependencies are inferred from the claim text.