Silicon steel plate of the outer-rotor motor
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United States of America Patent
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Issued Date -
Mar 1, 2018
app pub date -
Jun 26, 2017
filing date -
Sep 1, 2016
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Abstract
A silicon steel plate of a stator of an outer-rotor motor includes a magnetic yoke ring, a plurality of magnetic poles and a plurality of pole pieces is disclosed. The magnetic yoke ring has an inner edge and an outer edge. The inner edge forms a shaft hole. Each of the plurality of magnetic poles includes an inner end connected to the outer edge of the magnetic yoke ring. The plurality of magnetic poles is arranged around the magnetic yoke ring in even angles. Each of the plurality of pole pieces is connected to an outer end of a respective one of the plurality of magnetic poles. The silicon steel plate has a maximal diameter denoted as “W,” and the shaft hole has a diameter denoted as “D,” wherein 0.12≤D/W≤0.4.
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