Rotor for an electrical machine with push-on windings

US10784728B2 · kind B2 · utility

Assignee

• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Maria Bauer · Irvine, US
• Dragoljub DURICIC · Munich, DE
• Zakaria El Khawly · Munich, DE
• Daniel Loos · Munich, DE
• Andreas Mayr · Meitingen, DE

Key dates

• Filing date: May 13, 2019
• Grant date: Sep 22, 2020
• Expiry date: May 13, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K3/487
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A rotor for an electrical machine has a rotor core with a center line, which forms an axis of rotation. The rotor core can be subdivided by a plurality of imaginary radial planes, which extend radially from the axis of rotation at regular angular intervals. For each radial plane, at least one pair of winding grooves is formed, which extend through the rotor core to either side of the radial plane with the radial plane serving as the plane of symmetry. A winding is arranged in each pair of winding grooves, in winding receiving areas of the winding grooves, which winding extends through the two winding grooves of the pair. Each winding groove is bounded in its winding receiving area on its side facing the assigned radial plane by a side face, which continues in a manner free from projections, in the sense of projections in a direction away from the radial plane, from the winding receiving area to the radially outer end of the winding groove.