Elektromotor sowie Verfahren zur Herstellung eines Elektromotors

Details

Veröffentlichungs-Nr.

EP2680403

Aktenzeichen

EP13173245

Anmeldetag

21. Juni 2013

Veröffentlichung

4. Mai 2016

Erteilung

4. Mai 2016

Rechtsraum

EP

IPC

H02K1/27H02K15/03

Abstract

A plurality of lamination steel sheets that form a rotor core (22) are stacked so that the lamination steel sheets are angularly shifted from each other, and a plurality of cavities (31 a, 31 b) are formed. Permanent magnets (24) (magnet pieces 24a, 24b) are molded and disposed in the cavities (31a, 31b) by injection molding. Each permanent magnet (24) has a uniform plate thickness, and is bent with respect to an axial direction so as to have a triangular wave shape or an S shape. The permanent magnets (24) are magnetized after being disposed in the cavities (31a, 31b). The paired magnet pieces (24a, 24b) have poles of the same polarity, which face each other in the circumferential direction of a rotor (4), and each of the magnet pieces (24a, 24b) is magnetized in directions of normals to a surface of the magnet piece, the surface having a linear sectional shape.

Anmelder

Firmen

JTEKT Corporation
JTEKT CORPORATION

Land

🇯🇵 Japan

Fachgebiete