The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 2020
Filed:
Aug. 17, 2017
Robert Bosch Gmbh, Stuttgart, DE;
Murat Kol, Stuttgart, DE;
Patrick Heuser, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to an electric machine comprising a rotor () and a stator (). The rotor () has magnet pockets for receiving permanent magnets (), and the magnet pockets comprise at least one first pair of magnet pockets () and a second pair of magnet pockets (). The second pair () is arranged further inwards than the first pair () when viewed in a radial direction with respect to a rotational axis, and the magnet pockets of each pair of magnet pockets () are arranged symmetrically to one another with respect to an axis of symmetry (), wherein the axis of symmetry () runs in the radial direction and through the center of the rotor (). The magnet pockets of each pair of magnet pockets () are arranged such that the distance of each magnet pocket to the axis of symmetry () increases as the distance to the circumferential edge () of the rotor () decreases. The magnet pockets of the first pair () are arranged at a first mechanical angle to one another, and the magnet pockets of the second pair () are arranged at a second mechanical angle to one another. The invention is characterized in that the first angle ranges from ca. 100° to ca. 140°, in particular from ca. 120° to ca. 140°, and the second angle ranges from ca. 65° to ca. 112°, in particular from ca. 88° to ca. 112°.