Title:
STEPPING MOTOR
Document Type and Number:
Japanese Patent JP2018042385
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a two-phase PM type stepping motor having a high noise reducing effect.SOLUTION: A two-phase PM type stepping motor comprises: a rotor; and a stator that surrounds the circumference of the rotor. The rotor is formed by a rotor magnet in which a N-pole and a S-pole are alternately magnetically adhered to a p-pole that is equal to a multiple of 6 in a circumferential direction; and a rotation axis attached to a center of the rotor magnet. The stator comprises: a stator yoke that is arranged in the circumferential direction at an equivalent angle interval, includes a pole tooth opposite to the rotor, and has a M-salient pole that is equal to a multiple of 8; and a stator coil wound to the M-salient pole. The stator coil is formed by a first phase stator coil, and a second phase stator coil. The M-salient pole can be divided into the (M/2)-salient pole of a first group and the (M/2)-salient pole of a second group that are alternately selected in the circumferential direction.SELECTED DRAWING: Figure 3
Inventors:
MAEDA DAISUKE
SAKAMOTO TAKANORI
YAMADA KOSEI
EMURA KEITO
SAKAMOTO TAKANORI
YAMADA KOSEI
EMURA KEITO
Application Number:
JP2016175371A
Publication Date:
March 15, 2018
Filing Date:
September 08, 2016
Export Citation:
Assignee:
MITSUMI ELECTRIC CO LTD
International Classes:
H02K37/14
Attorney, Agent or Firm:
Kenho Ikeda
Takashi Sasaki
Takashi Sasaki
Previous Patent: Inverter structure
Next Patent: A rotation angle estimating device and an engine starting system
Next Patent: A rotation angle estimating device and an engine starting system