Title:
BRUSHLESS MOTOR
Document Type and Number:
Japanese Patent JP2018170918
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a brushless motor in which unbalance of a rotor due to arrangement of sensor magnets is unlikely to occur.SOLUTION: A brushless motor (1) includes: a stator (20) having a coil (23); a rotor (10) having a permanent magnet (13) and rotatable around a rotary shaft (11); a sensor magnet (30) embedded in an axial center at one end of the rotary shaft and having a side surface (31) in a longitudinal direction of the rotary shaft covered with the rotary shaft; and a magnetic detection element (42) for outputting a signal corresponding to a rotary angle of the rotor by detecting a change in magnetic field caused by rotation of the sensor magnet.SELECTED DRAWING: Figure 1
Inventors:
TAKEDA TOMONORI
Application Number:
JP2017068503A
Publication Date:
November 01, 2018
Filing Date:
March 30, 2017
Export Citation:
Assignee:
CITIZEN CHIBA PREC CO LTD
CITIZEN WATCH CO LTD
CITIZEN WATCH CO LTD
International Classes:
H02K29/08; H02K11/215; H02K21/14
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tomohiro Minamiyama
Koichi Itsubo
Ryoichi Hagiwara
Jun Tsuruta
Tomohiro Minamiyama
Koichi Itsubo
Ryoichi Hagiwara