Title:
BRUSH MOTOR
Document Type and Number:
WIPO Patent Application WO/2018/139827
Kind Code:
A1
Abstract:
The present invention relates to a brush motor. The purpose of the present invention is to provide a brush motor wherein the same is structured to have four poles, twenty-four slots, and two brushes; the pole arc/pole angle ratio, which is the ratio of the magnet width against the pole interval, is optimized, thereby enabling compactness and lightness; and generation of "cogging torque" and "ripple current", which result from a change in the magnetic field between a rotor and stators, is minimized, thereby improving the rotation performance of the motor. In order to accomplish the above purpose, the present invention provides a brush motor comprising: a motor housing; a plurality of stators installed on the inner peripheral surface of the motor housing at an interval; a rotor rotatably installed inside the stators; a plurality of commutators installed at the rotation center axis of the rotor; and a plurality of brushes for applying electricity to respective commutators, wherein the rotor comprises multiple slots formed on the outer peripheral surface thereof at an interval and a plurality of coils wound around respective slots. Four stators are installed on the inner peripheral surface of the motor housing. Two brushes apply electricity to respective commutators of the rotor. Twenty-four slots of the rotor undergo drawing and repelling actions with the four stators, respectively, and generate rotational torque when excited or demagnetized by applied current, and twenty-four coil parts are wound around the slots, respectively, thereby providing a structure comprising four poles, twenty-four slots, and two brushes.
Inventors:
KANG IN KEUN (KR)
HAN GYU IK (KR)
HAN GYU IK (KR)
Application Number:
PCT/KR2018/000987
Publication Date:
August 02, 2018
Filing Date:
January 23, 2018
Export Citation:
Assignee:
HANON SYSTEMS (KR)
International Classes:
H02K1/17; H02K1/12; H02K1/26; H02K3/12; H02K3/48; H02K7/14; H02K13/00; H02K16/04; H02K23/40
Foreign References:
| KR20150104112A | 2015-09-14 | |||
| JP2002044925A | 2002-02-08 | |||
| JP2010166683A | 2010-07-29 | |||
| KR20050111803A | 2005-11-29 | |||
| JP2013005601A | 2013-01-07 |
Attorney, Agent or Firm:
CHOI, Young-Min (KR)
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