To provide an inner rotor type motor which comprises a stator adopting an angular stator core and is capable of implementing torque increase without being enlarged in size.
The inner rotor type motor comprises: a stator including a stator core in which a plurality of main electrodes are projected inside of an annular core back part, and a coil wound around each of the main electrodes via an insulator; and a rotor which is disposed inside of the stator in a rotatable manner so as to oppose distal ends of the main electrodes and includes a rotary shaft around an axis. The core back part of the stator core is configured, such that the outline is substantially square-shaped with four corners cut away, and side faces of four sides of the square form a motor outer surface, respectively. The main electrodes of the stator core are disposed at position tilted at a predetermined angle circumferentially from the center of four pieces of the core back part around the axial center and in the stator core, a ratio of a maximum inner diameter with respect to a minimum outer diameter is set to 0.65 to 0.75.
NGUYEN THANH TRUNG
KATO TAKAYA
ARAKAWA MIHO
NAKAGAWA TSUYOSHI
| JP2012005311A | 2012-01-05 | |||
| JP2007124848A | 2007-05-17 | |||
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| JP2010246323A | 2010-10-28 |