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:
Jun. 06, 2017
Filed:
Apr. 29, 2013
Robert Bosch Gmbh, Stuttgart, DE;
Tobias Rothfuss, Buehl, DE;
Michael Maelzer, Reutlingen, DE;
Juergen Munz, Filderstadt, DE;
Michael Hermann, Lauf, DE;
Detlef Prahl, Buehl, DE;
Siegmar Schoser, Kusterdingen, DE;
Joerg Brandes, Baden-Baden, DE;
Andreas Schiel, Gernsbach-Lautenbach, DE;
Tamas Banky, Paty, HU;
Zsolt Dudas, Kaposszekcs, HU;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
In an electronically commutated DC motor having a stator unit () and a rotor unit () which is in the form of an external rotor, and having stationary sintered bearings (), the invention proposes that the rotor unit () is conductively connected to the shaft () in order to connect a conductive shielding, which is formed on the rotor unit (), to a defined electrical potential, and that the sintered bearing () is conductively connected to the potential, so that the shielding of the rotor unit () is capacitively coupled to the potential by means of the electrically insulating, oil-filled bearing gap which is arranged between the shaft () and the sintered bearing (). Therefore, a sliding contact is not required.