Brush device for the electrical connection of a first element to a second element, electric machine and drive device

摘要

The invention relates to a brush device (1) for the electrical connection of a first element (2A) to a second element (2B) which can be rotated about an axis of rotation (L) relative to the first element (2A), the brush device (1) being in a contact area ( 1A) for electrical contact with the second element (2B) has a structure (1B, 1B ', 1B ") which extends helically to the axis of rotation (L). The invention also relates to an electric machine (2) with such a brush device (1) The invention also relates to a drive device for electrically driving a motor vehicle with such an electric machine (2).