Patent · US Expired

Device and procedure to adjust the axial play between the rotor and the stator mounted bearings of an electrical motor

US4888508A · kind A · utility

22Cited by

8References

4Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Adam · Wuppertal, DE
Adolf Lindner
Werner Schilling · Wildenheid, DE
Ewald Wehner · Würzberg, DE

Key dates

Filing date	Sep 24, 1985
Grant date	Dec 19, 1989
Priority date	—
Expiry date	Sep 24, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49012
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

This invention develops an automated procedure which permits the settling of the axial play of a rotor using a stator sleeve pressed onto the rotor shaft and held in place during assembly by an insulating end disc which mates at an end face with the laminated rotor core, whereby assuring the smallest number of assembly steps. According to this invention, the insulating end disc is injection-moulded in one piece along with the spacer sleeve with an intermediate weak rated point in the form of either elastic or break-away intermediate segments which permit a relative setting motion between the insulating end disc which contacts the end face of the laminated rotor core, and the spacer sleeve pressed on the rotor shaft. This invention is particularly suitable for small commutator motors with rotor shafts mounted in sleeve bearings.

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