Title:
ブラシレスモータ
Document Type and Number:
Japanese Patent JP6411833
Kind Code:
B2
Abstract:
A toothed part 22 has a tooth main body 24 and a tip part 25. A pair of slant parts 26 are formed in a protruding manner on both sides of the tooth tip part 25. A tip surface 27 is formed on the inner diameter side end surface of the tip part 25 so as to face a magnet 15 through an air gap g. A groove part 28 is formed so as to be recessed in the center of the tip surface 27 and to extend in the axial direction. A depth d of the groove part 28 is set to satisfy 0 < d ¤ (Lx - Rt) /3 . A width Wg of the groove part 28 is set to satisfy Wt > Wg >_ Wt/2 (Lx: distance between the center of the rotor and a tooth/slant intersection X, the intersection X being the intersection between an extension line P of a circumferential side surface of the tooth main body and an extension line Q of a slope of the slant part, Rt: radius of the inner diameter of the tooth tip surface, Wt: width of the tooth main body).
Inventors:
Hirotatsu Ikeno
Takamasa Aoki
Yuya Ogawa
Takamasa Aoki
Yuya Ogawa
Application Number:
JP2014192774A
Publication Date:
October 24, 2018
Filing Date:
September 22, 2014
Export Citation:
Assignee:
Mitsuba Co., Ltd.
International Classes:
H02K1/14; H02K1/16; H02K1/22; H02K1/27; H02K21/16
Domestic Patent References:
| JP2013223281A | ||||
| JP2004194489A | ||||
| JP2009213284A |
Foreign References:
| US5757100 | ||||
| WO2009119734A1 |
Attorney, Agent or Firm:
Ning Takano
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