Drive apparatus for a vehicle

US11971094B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Markus Schaefer · Braubach, DE
• Moritz Lux · Munich, DE

Key dates

• Filing date: Sep 17, 2020
• Grant date: Apr 30, 2024
• Expiry date: Sep 17, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2057/02034
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A drive apparatus for a vehicle having an electric machine whose rotor shaft is constructed as a hollow shaft having an internal tooth arrangement. A gear mechanism drive shaft, which has an external tooth arrangement, is inserted coaxially relative to the hollow shaft into the hollow shaft, to form a torque-transmitting spline. The rotor shaft with a rotor shaft rotary bearing being interposed is guided outward through a bearing opening of an electric machine housing, and the gear mechanism drive shaft has a centering seat which is in abutment with the internal circumference of the rotor shaft with a tight clearance fit. The gear mechanism drive shaft is subjected to bending (D) during travel operation as a result of radially active operating forces (FR). To reduce the bending stress (D), the centering seat of the gear mechanism drive shaft is arranged without an axial offset with respect to the rotor shaft rotary bearing, in axial alignment relative to the rotor shaft rotary bearing.