Title:
MOTOR
Document Type and Number:
Japanese Patent JP2017042006
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor capable of detecting a rotational position with high accuracy.SOLUTION: An A-phase rotor part 50a comprises a first rotor core 51a and a second rotor core 61a which is disposed at one side of the first rotor core 51a in an axial direction. The first rotor core 51a includes a first magnetic pole part 56a extending to one side in the axial direction, and the second rotor core 61a includes a second magnetic pole part 66a extending to the other side in the axial direction. In a distal end of the second magnetic pole part 66a, a projection 67a extending to the other side in the axial direction is formed. A magnetic sensor 17 outputting a detection signal corresponding to magnetic fluxes of the first rotor core 51a and the second rotor core 61a is disposed at the other side of the first rotor core 51a in the axial direction, and at a position opposing a distal end face 66s of the second magnetic pole part 66a.SELECTED DRAWING: Figure 5
Inventors:
NAKANO SHO
KATO SHIGEMASA
MATSUDA TADASHI
KATO SHIGEMASA
MATSUDA TADASHI
Application Number:
JP2015163696A
Publication Date:
February 23, 2017
Filing Date:
August 21, 2015
Export Citation:
Assignee:
ASMO CO LTD
International Classes:
H02K29/08
Domestic Patent References:
| JPH0670526A | 1994-03-11 | |||
| JP2014143858A | 2014-08-07 |
Foreign References:
| US20140139079A1 | 2014-05-22 | |||
| CN103812296A | 2014-05-21 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda