Title:
Electric motor
Document Type and Number:
Japanese Patent JP6091058
Kind Code:
B2
Abstract:
An electric motor includes a yoke having a plurality of magnetic poles, a rotary shaft, an armature core (8) attached to the rotary shaft, the armature core (8) having a plurality of teeth (12) and slots (13), an armature coil (9) wound on the teeth (12) through an intensive winding method, a commutator having a plurality of segments (15) installed at the rotary shaft and disposed in a circumferential direction, a low speed brush (21a) and a high speed brush (21b) configured to supply power to the armature coil (9) via the segments (15), and a common brush (21c) commonly used in these brushes, wherein, when n is a natural number of 3 or more, a ratio of the numbers of magnetic poles, slots (13), and segments (15) is set to 2:3:3n.
Inventors:
Yoshichika Kawashima
Teppei Tokisaki
Teppei Tokisaki
Application Number:
JP2011250721A
Publication Date:
March 08, 2017
Filing Date:
November 16, 2011
Export Citation:
Assignee:
Mitsuba Co., Ltd.
International Classes:
H02K23/04; H02K23/00; H02K23/26
Domestic Patent References:
| JP2010283930A | ||||
| JP2004120952A | ||||
| JP2011130613A | ||||
| JP2007006633A |
Foreign References:
| WO2010010906A1 |
Attorney, Agent or Firm:
Masatake Shiga
Suzuki Mitsuyoshi
Kazuya Nishi
Shingo Suzuki
Suzuki Mitsuyoshi
Kazuya Nishi
Shingo Suzuki
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