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Title:
ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2013/015409
Kind Code:
A1
Abstract:
An electric motor of the present invention comprises a yoke which comprises a plurality of permanent magnets, a pivot, an armature core (8) which comprises a plurality of teeth (12) and a slot (13) engaged with the pivot, an armature coil (9) packed through concentrated winding at each of the teeth (12), a commutator disposed at the pivot with a plurality of segments (15) being arranged in a circumferential direction, a low-speed brush (21a), a high-speed brush (21b), and a common brush (21c) used in common therewith which supply electricity to the armature coil (9) through the segments (15). When n is a natural number of at least 3, a number ratio between a magnetic pole, the slot (13), and the segment (15) is set to be 2:3:3n.

Inventors:
KAWASHIMA Yoshichika (2681 Hirosawa-cho 1-chome, Kiryu-sh, Gunma 55, 〒3768555, JP)
川島 義親 (〒55 群馬県桐生市広沢町1丁目2681番地 株式会社ミツバ内 Gunma, 〒3768555, JP)
Application Number:
JP2012/069152
Publication Date:
January 31, 2013
Filing Date:
July 27, 2012
Export Citation:
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Assignee:
MITSUBA Corporation (2681, Hirosawa-cho 1-chome Kiryu-sh, Gunma 55, 〒3768555, JP)
株式会社ミツバ (〒55 群馬県桐生市広沢町1丁目2681番地 Gunma, 〒3768555, JP)
KAWASHIMA Yoshichika (2681 Hirosawa-cho 1-chome, Kiryu-sh, Gunma 55, 〒3768555, JP)
International Classes:
H02K23/00; H02K23/04; H02K23/26; H02K23/32
Domestic Patent References:
WO2010010906A12010-01-28
Foreign References:
JP2010283930A2010-12-16
JP2007006633A2007-01-11
JP2011130613A2011-06-30
Attorney, Agent or Firm:
SHIGA Masatake et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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Claims:



 
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