Robert Boschgmbh

Bruno Holzwarth

Heinz Siegel

Tilo Koenig

Ngoc-Thach Nguyen

Erik Maurer

Stefan Ossenkopp

Lin Feuerrohr

Joachim Becker

Karl-Juergen Roth

Holger Klatte

Stefan Stoermer

Andreas Altmann

The invention relates to an electrical machine (), in particular an electric motor, suitable for the adjustment by external force of elements of a motor vehicle, essentially for driving a steering booster. The inventive electrical machine comprises a rotor () and a shaft (), the rotor having a plurality of plates (), wherein the plates () are premounted on the shaft either individually or as a plate assembly () or by means of a plurality of plate assemblies (), the rotor () being connected to the shaft (). The plates () have resilient lugs () for fixing the plates () and/or plate assemblies () to the shaft (). Furthermore, the plates () of the plate assemblies () comprise centering lugs () which serve to radially center the plate assembly () relative to the shaft (). An attachment of the stator () in a housing part () is possible, wherein centering lugs () at the plates () of the plate assembly () of the stator () serve to center the plate assembly () of the stator () relative to the shaft ().

Electrical machine

An electric machine (), particularly used as an electric motor, has a rotor () comprising a plurality of disks (). A disk () of the rotor () is divided in a circumferential direction () into a plurality of disk sectors () between which magnetic pockets () are designed. Furthermore, the disk () has an inner fastening collar () and connecting members () connecting the disk sectors () to the fastening collar (). Such a connecting member () comprises a main web (), a side arm () branching off the main rib () in the circumferential direction (), and a side arm () branching off the main web () opposite to the circumferential direction (). High mechanical stability of the disk () can thus be ensured, wherein magnetic flow losses are reduced.

Electric machine

Growing community of inventors

Schwieberdingen, Germany

Bruno Holzwarth