Drive device, especially for a vehicle, having an electric drive with a rotor shaft bearing system

摘要

A drive device having an electric drive. A drive device (1) includes at least one housing (15), at least one electric drive, the electric drive having a rotor arrangement with a rotor shaft (7) which is designed for rotation about a rotational axis (17), and a bearing arrangement (14a, b) for mounting the rotor arrangement. The bearing arrangement (14a, b) supports the rotor arrangement in relation to the rotational axis (17) radially inwardly, the bearing arrangement (14a, b) supporting the rotor shaft in relation to a support section (15, 16) that is fixed to the housing.

主权项

1. A drive device comprising:
at least one housing; and at least one electric drive, the electric drive having a rotor system including a rotor shaft designed for rotation around a rotation axis, and having a bearing system for supporting the rotor system, the bearing system supporting the rotor system radially inwardly in relation to the rotation axis, the bearing system supporting the rotor shaft with respect to a support section fixed to the housing, the rotor shaft having a stepped design with a first radial inner surface having diameter larger that the bearing system to contact the bearing system, the rotor shaft having a radially inwardly projecting section with a second radial inner surface having a diameter smaller than the bearing system, wherein the rotor shaft is designed as a hollow shaft having a hollow shaft chamber, at least one shaft being situated in the hollow shaft chamber, the shaft being rotatably fixedly but axially shiftably coupled with the rotor shaft.