Robert Boschgmbh

Marco Eitzert

Robert Bonasewicz

Soenke Schuch

Simon Mensak

Thomas Pagoni

A rotor for an electric motor includes a rotor core having a radius and a peripheral outer surface. The rotor further includes at least one air deflector element associated with the peripheral outer surface. The at least one air deflector element has at least one slope arranged at a predetermined angle to the radius. The at least one air deflector element is designed to deflect an air flow which occurs during a rotation of the rotor and flows along the peripheral outer surface counter to a direction of rotation of the rotor, at least partially in a flow direction oriented at least approximately perpendicularly to the peripheral outer surface.

Rotor for an electric motor and electric motor with a rotor

A rotor for an electric machine, in particular for a brushless DC motor, includes a hollow cylindrical main body that is rotationally fixed to a machine shaft. The main body includes a plurality of radial protrusions arranged over its casing surface in the circumferential direction and in the axial direction and offset relative to one another by a defined offset angle. Each radial protrusion is limited over an angular range, which is smaller than the offset angle. The hollow cylindrical main body is permanently connected, in particular adhered, to a hollow cylindrical body surrounding same in the circumferential direction by way of a joining process. A method for producing a rotor for an electric machine is also disclosed. The method includes (i) using rotor laminations for a rotor lamination stack of the rotor, wherein a plurality of rotor laminations have a respective at least one radial protrusion that is limited over an angular range, (ii) stacking the rotor laminations to form the rotor lamination stack in such a way that, of the plurality of rotor laminations having at least one radial protrusion, neighboring rotor laminations are rotated relative to one another about a defined offset angle that is greater than the angular range of the at least one radial protrusion, (iii) applying a joining agent, in particular an adhesive, to an outer casing of the rotor lamination stack, preferably between the radial protrusions, and/or to an inner surface of a hollow cylindrical body, and (iv) sliding the hollow cylindrical body onto the rotor lamination stack. An electric machine is also disclosed that includes a corresponding rotor, as well as an electrical processing device having a corresponding electric machine.

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Schwenningen, Germany

Marco Eitzert