Title:
BRUSHLESS MOTOR
Document Type and Number:
Japanese Patent JP2019033590
Kind Code:
A
Abstract:
To provide a brushless motor capable of suppressing a cogging torque caused by a difference in a flow of a magnetic flux generated between a coil wound tooth and a coil non-wound tooth while improving winding workability and coil winding space factor without lowering the efficiency.SOLUTION: Six non-wound teeth 15 and six wound teeth 17 around which windings are wound are arranged alternately in the circumferential direction around an axis L to constitute a stator 4, and a rotor 10 in which 14 drive magnets 9 are arranged in a circumferential direction is supported so as to be rotatable around the axis L on an outer peripheral side of the stator 4. Outer peripheral ends 15a and 17a of each of the non-wound teeth 15 and each of the wound teeth 17 are opposed to the driving magnets 9 of the rotor 10, and the rotor 10 is rotated by continuously switching a magnetic flux flowing to each of the teeth 15 and 17 by energizing the windings of the stator 4. A circumferential width B1 of the outer peripheral end 15a of each of the non-wound teeth 15 is set to be wider than a circumferential width B2 of the outer peripheral end of each of the wound teeth 17.SELECTED DRAWING: Figure 2
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Inventors:
WAKITA TADAYUKI
Application Number:
JP2017153182A
Publication Date:
February 28, 2019
Filing Date:
August 08, 2017
Export Citation:
Assignee:
MABUCHI MOTOR CO
International Classes:
H02K1/16; H02K3/28; H02K21/22
Attorney, Agent or Firm:
Koji Nagato