Patent · US Active

Bearing concept for segment motors

US8274195B2 · kind B2 · utility

3Cited by

23References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Markus Capka · Schlehdorf, DE
Zeljko Jajtic · Birkenfeld, DE
Gerhard Matscheko · Starnberg, DE
Christian Volmert · Munich, DE

Key dates

Filing date	Nov 23, 2010
Grant date	Sep 25, 2012
Priority date	—
Expiry date	Mar 31, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02K1/182
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrical machine includes a stator coupled to a machine frame and constructed to produce a magnetic field. A rotor which is connected to a shaft magnetically interacts with the stator and is separated there from by an air gap which is arranged such that the magnetic field within the air gap is directed essentially parallel to the shaft axis during operation of the electrical machine. Arranged between the rotor and the stator is an axial bearing which absorbs attraction forces acting between the stator and the rotor in a direction of the shaft axis. An elastic coupling mechanically couples the stator to the machine frame and is made less stiff than the axial bearing with respect to a force acting in the direction of the shaft axis, and constructed such that a force acting on the rotor in the direction of the shaft axis is able to cause the stator to be translated with respect to the machine frame in the direction of the shaft axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.