Device including an electric machine with a lightweight design

Abstract

An active part () of an electric machine () is connected to a supporting body () via a connecting structure and is fixed relative to the supporting body (). A rotor (') of the electric machine interacts electromagnetically with a stator core (″) and is mounted rotatably relative to the stator core (″) so that the rotor (′) is rotatable about an axis of rotation (). The connecting structure comprises at least one hub (), a supporting ring () and first and second struts (). The hub () surrounds the axis of rotation () and extends in the axial direction from an upper hub end () to a lower hub end (). The hub () adjoins, with the upper hub end (), the supporting body () and is fastened there to the supporting body (). The supporting ring (), on the outer side () thereof, adjoins the active part () and is connected to the active part (). The first struts () extend in a radial plane () radially outwards from the lower hub end () to the supporting ring (). The first struts () merge with the hub () in a respective radially inner transition region () and with the supporting ring () in a respective radially outer transition region (). The second struts () extend from the upper hub end () to the supporting ring (). In relation to the radial plane (), the radially inner transition region () and the radially outer transition region () of a respective first strut () each form an angle (a) with the axis of rotation ().