Title:
コア付きモータ
Document Type and Number:
Japanese Patent JP4699710
Kind Code:
B2
Abstract:
A cored motor includes a rotor ( 21 ), having a rotor hub ( 2 ), a shaft ( 1 ) fixed to the rotor hub ( 2 ), a rotor yoke ( 5 ) in ring shape and a ring magnet ( 6 ) fixed to an inner circumferential surface of the rotor yoke ( 5 ). A stator ( 3 ) has a motor base ( 13 ) and a stator core ( 14 ) and a sleeve ( 9 ) in cylindrical shape fixed to the motor base ( 13 ) respectively. A surface of the rotor hub ( 2 ) in the motor base side is provided with a recessed portion ( 23 ) having an annular shape and a raised portion ( 24 ) that protrudes continuously or intermittently in an annular shape. The rotor yoke ( 5 ) is fixed to the recessed portion ( 23 ) and the ring magnet ( 6 ) contacts the raised portion ( 24 ) and fixed to the rotor yoke ( 5 ). Respective center lines of the rotor yoke ( 5 ), the ring magnet ( 6 ) and the stator core ( 14 ) are aligned in a longitudinal direction along the shaft ( 1 ) and are made approximately coincidental with each other.
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Inventors:
Teruyuki Yajima
Mitsuo Kodama
Mitsuo Kodama
Application Number:
JP2004157304A
Publication Date:
June 15, 2011
Filing Date:
May 27, 2004
Export Citation:
Assignee:
Alphana Technology Co., Ltd.
International Classes:
H02K1/22; H02K1/27; H02K7/00; H02K7/14; H02K21/22; H02K29/00
Domestic Patent References:
| JP5161329A | ||||
| JP11252878A | ||||
| JP9149586A | ||||
| JP60156874U | ||||
| JP61123677U |