Patent · US Active

Permanent magnet rotor

US11025109B2 · kind B2 · utility

0Cited by

2References

12Claims

0Family size

Assignee

BÜHLER MOTOR GMBH · DE

Inventors

Heinz Günther · Dunningen, DE
Martin Gundermann · Nuremberg, DE
Mladen Zec · Nuremberg, DE
Jochen Bauer · Gettorf, DE
Andreas Wall · Nürnberg, DE
Klaus Weiske · Altdorf, DE
Armin Suttner-Reimann · Schwabach, DE

Key dates

Filing date	Jan 9, 2019
Grant date	Jun 1, 2021
Priority date	—
Expiry date	Jan 9, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH02K15/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A permanent magnet rotor of an electric motor, includes a laminated core having magnet pockets, the laminated core being composed of two partial laminated cores. A plurality of permanent magnets are held in a force-fitting manner in magnet pockets of the laminated core, the magnets extending over both partial laminated cores. Sheet metal tongues, which maintain the force fit of the permanent magnets, are deflected in the first partial laminated core in a first axial direction and in the second partial laminated core in a second axial direction opposite to the first direction, wherein the partial laminated cores consist of stamped metal sheets and the permanent magnets are pressed into the magnet pockets in the stamping direction.

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