Title:
ROTOR AND MOTOR USING THE SAME
Document Type and Number:
Japanese Patent JP2018117490
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve magnetic imbalance generated between salient pole parts and magnetic pole parts of a rotor and stator coils and make waveforms of a counter electromotive voltage generated at the stator coils approach each other, and thereby, to achieve a configuration capable of reducing torque ripples generated in a motor.SOLUTION: A rotor 2 comprises: a cylindrical-shape rotor core 11 that has a plurality of salient pole parts 23 on an outer peripheral surface, and that extends along a central axis P; and a plurality of magnetic pole parts 35 each having a rotor magnet 12 arranged side by side with the salient pole part 23 in a circumferential direction of the rotor core 11, on an outer peripheral surface or a radial inner part, of the rotor core 11. The salient pole parts 23 and the magnetic pole parts 35 form a magnetic pole of the rotor 2. Each salient pole parts 23 and each magnetic pole parts 35 have an arcuate salient pole outer peripheral surface 23a and an arcuate magnetic pole outer peripheral surface 12a protruded radially outward in a cross section orthogonal to the central axis P. The salient pole outer peripheral surface 23a has a curvature radius larger than that of the magnetic pole outer peripheral surface 12a, in the cross section.SELECTED DRAWING: Figure 1
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Inventors:
UEDA TOMOYA
Application Number:
JP2017008445A
Publication Date:
July 26, 2018
Filing Date:
January 20, 2017
Export Citation:
Assignee:
NIHON DENSAN KK
International Classes:
H02K1/27; H02K21/16
Attorney, Agent or Firm:
Suzuki Kazuaki
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