ELECTRIC MOTOR AND AIR CONDITIONER - MITSUBISHI ELECTRIC CORP

Title:

ELECTRIC MOTOR AND AIR CONDITIONER

Document Type and Number:

WIPO Patent Application WO/2017/009902

Kind Code:

A1

Abstract:

An electric motor 1 is provided with a rotor 3 having a rotor magnet 20. The rotor magnet 20 includes: an annular back yoke 23 that is formed by molding a resin which contains soft magnetic powder and/or ferrite powder; and an annular resin magnet 24 that is formed by molding a resin containing rare earth magnetic powder, that is disposed on an outer peripheral surface of the back yoke 23, and that has a plurality of slits 31 in a plurality of inter-magnetic pole sections of the rotor magnet 20. The length of each slit 31 in the axial direction is shorter than the total length of the resin magnet 24 in the axial direction.

Inventors:

ISHII HIROYUKI (JP)
OIKAWA TOMOAKI (JP)
YAMAMOTO MINEO (JP)
ASO HIROKI (JP)
OYA JUNICHIRO (JP)
URABE YUTO (JP)
SHIMOKAWA TAKAYA (JP)

Application Number:

PCT/JP2015/069921

Publication Date:

January 19, 2017

Filing Date:

July 10, 2015

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H02K1/27; H02K21/14

Foreign References:

JP2012151979A	2012-08-09
JP2008043031A	2008-02-21
JPH0186466U	1989-06-08
DE102009013374A1	2010-09-09
DE2756626A1	1979-06-21
JP2006086319A	2006-03-30