MOTOR - MATSUSHITA ELECTRIC IND CO LTD

Title:

MOTOR

Document Type and Number:

WIPO Patent Application WO/2007/123107

Kind Code:

A1

Abstract:

A motor comprises a stator including an annular stator yoke and a stator core with inner and outer teeth projecting from the stator yoke to the inner and outer sides, and a plurality of coils wound around the stator core; and an inner rotor and an outer rotor facing the inner and outer teeth with spaces formed therebetween and having permanent magnets. The number (s) of the inner and outer slots and the number (P) of the poles of the inner and outer magnets have a relation of S:P = 3:2N – 1, except the case that (N) is an integer of one or more and (2N – 1) is multiples of three.

Inventors:

YOSHIKAWA YUICHI
MURAKAMI HIROSHI
NAKAGAWA YUKINORI
MORISAKI MASAHIKO
LI HU

Application Number:

PCT/JP2007/058318

Publication Date:

November 01, 2007

Filing Date:

April 17, 2007

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD (JP)
YOSHIKAWA YUICHI
MURAKAMI HIROSHI
NAKAGAWA YUKINORI
MORISAKI MASAHIKO
LI HU

International Classes:

H02K1/16; H02K21/14; H02K16/02; H02K21/22

Foreign References:

JP2001037133A	2001-02-09
JP2002165426A	2002-06-07

Other References: