Electric motor

US9140256B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Marc Micke · Brackenheim, DE
• Reiner Fellmeth · Besigheim, DE
• Stefan Klein · Meitingen, DE

Key dates

• Filing date: Sep 27, 2012
• Grant date: Sep 22, 2015
• Expiry date: Sep 27, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2380/26
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An electric motor includes an armature shaft which is mounted in at least one floating bearing. The floating bearing comprises a bearing inner ring, which is positioned on the armature shaft, a bearing outer ring, which is received in a bearing seat, and a fluid pump for a vehicle fluid system having the electric motor. Lubricant disposed between the armature shaft and the bearing inner ring forms a hydrodynamic lubricant film and generates a constant relative movement between the armature shaft and the bearing inner ring.