Title:
BRUSHLESS MOTOR
Document Type and Number:
Japanese Patent JP2017112733
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a brushless motor capable of preventing an error operation due to a static electricity arrived from an external part.SOLUTION: A brushless motor 1 includes: a magnet arranged so that a pole direction is alternately reversed along with a circumferential direction as a center of a rotation axis 32; a rotor 15 that is rotatably attached to housings (11 and 16) as the rotation center of the rotation axis 32; a plurality of coils that is arranged along with the circumferential direction as a center of the rotational axis 32 of a rotor 15 so as to be faced to the magnet of the rotor 15; a stator 14 that allows the rotor 15 to rotate by a correlation of a magnetic field generated in each coil due to a current flowing in each coil and a magnetic field generated by the magnet of rotor 15; at least one of rotation angle sensors (17-1 to 17-3) detecting a rotation angle of the rotor 15; and a protection part 41 that is provided at a position away from the rotation axis 32 of the rotor 15 from each of rotation angle sensors (17-1 to 17-3), and is formed by a grounded conductor.SELECTED DRAWING: Figure 5
Inventors:
KAWAMOTO RYUJI
FUKUDA YOSHIKI
ABE FUMIAKI
FUKUDA YOSHIKI
ABE FUMIAKI
Application Number:
JP2015245431A
Publication Date:
June 22, 2017
Filing Date:
December 16, 2015
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
H02K29/08; H02K11/20; H02K11/21
Domestic Patent References:
| JP2014017929A | 2014-01-30 | |||
| JP2012114976A | 2012-06-14 | |||
| JP2002199771A | 2002-07-12 | |||
| JP2013090532A | 2013-05-13 | |||
| JPH08317604A | 1996-11-29 | |||
| JP2012168016A | 2012-09-06 |
Foreign References:
| US20150333596A1 | 2015-11-19 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Koichi Itsubo
Tsutomu Kono
Jun Tsuruta
Koichi Itsubo
Tsutomu Kono