Title:
SYNCHRONOUS DRIVE MOTOR
Document Type and Number:
WIPO Patent Application WO/2015/022803
Kind Code:
A3
Abstract:
To provide a synchronous drive motor that satisfies a high torque, a high output, and downsizing at a higher level. A synchronous drive motor includes: a stator including a stator core and windings, the stator core including a plurality of teeth that are spaced from each other by a slot formed therebetween with respect to a circumferential direction, the winding extending through the slot, each of the plurality of teeth including a portion wound with the winding; and a rotor including a permanent magnet part that forms a plurality of magnetic pole faces, the plurality of magnetic pole faces being provided on a surface of the rotor opposed to the stator. Each of the plurality of teeth includes a distal end portion that is opposed to the magnetic pole face. The distal end portion has a smaller circumferential width than a circumferential width of the magnetic pole face, the number of the magnetic pole faces being more than the number of the teeth.
Inventors:
MASUDA MASAHUMI (JP)
HINO HARUYOSHI (JP)
NISHIKAWA TAKAHIRO (JP)
HINO HARUYOSHI (JP)
NISHIKAWA TAKAHIRO (JP)
Application Number:
PCT/JP2014/064560
Publication Date:
April 09, 2015
Filing Date:
May 27, 2014
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
H02K21/22; H02K21/24
Foreign References:
| GB2220529A | 1990-01-10 | |||
| DE29712973U1 | 1998-11-19 |
Attorney, Agent or Firm:
TASS MEISTER PATENT FIRM (4-13 Hirakawa-cho 2-chome, Chiyoda-k, Tokyo 93, JP)
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