Electric motor

Patent metadata

Field	Value
Publication number	US-9124166-B2
Application number	US-201213441429-A
Country	US
Kind code	B2
Filing date	Apr 6, 2012
Priority date	Apr 7, 2011
Publication date	Sep 1, 2015
Grant date	Sep 1, 2015

Abstract

A brush direct current motor has a stator with a plurality of coils that correspond to N phases, a rotor with 2P magnet poles and a current converting device for converting direct current power to N phases current and carrying the N phases of alternating current for the coils of the stator. The current converting device has a plurality of first and second bars alternately arranged with transiting plates along a brush path. Resistors connect the transiting plates to one of the adjacent bars.

First claim

The invention claimed is:

1. A brush direct motor, comprising:
a stator comprising a plurality of coils that correspond to N phases;
a rotor comprising a shaft and 2P radially polarized permanent magnetic poles;
a commutator fixed to the shaft, comprising: a first conductive ring; a second conductive ring spaced from the first conductive ring; a plurality of first bars extending from the first conductive ring; a plurality of second bars extending from the second conductive rin…

Assignees

• Li Yue
• Liu li sheng
• Johnson Electric Sa

Inventors

• Li Yue
• Liu li sheng

Classifications

• H02K13/04

  Electricity · mapped topic

• H02K13/105

  Electricity · mapped topic

• H02K23/62 Primary

  Electricity · mapped topic

• H02K13/006

  Electricity · mapped topic