Direct current motor
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United States of America Patent
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Aug 27, 2013
Grant Date -
Mar 24, 2011
app pub date -
Jul 7, 2010
filing date -
Sep 23, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A DC motor including a stator which includes a shell, a main magnetic pole and an exciting coil; a rotator disposed inside the stator; a brush holder disposed at an end of the shell; first and second carbon brushes disposed on the brush holder and contacted with the rotator respectively; a current direction controller disposed on the brush holder and connected with the first and second carbon brushes and first and second ends of the exciting coil respectively so as to control a direction of a current supplied to the exciting coil; and a cover disposed at the end of the shell so as to enclose the brush holder. The motor according to the present invention is compact in structure, small in volume, and occupies a small mounting space, and the work load of sealing and insulating is reduced, thus reducing the cost and improving the manufacture efficiency.
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