ROTOR, MOTOR, METHOD FOR MANUFACTURING ROTOR, AND METHOD FOR MANUFACTURING MOTOR
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United States of America Patent
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May 18, 2017
app pub date -
Oct 31, 2016
filing date -
Nov 2, 2015
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Abstract
A rotor includes a rotor core, permanent magnets, and a tubular non-magnetic cover. The permanent magnets are arranged along an outer surface of the rotor core in the circumferential direction. The permanent magnets each include a curved outer surface as viewed in the axial direction. The tubular non-magnetic cover covers the outer surfaces of the permanent magnets. The rotor core includes at least two stacked cores. Each stacked core includes a stack of core sheets. One of the stacked cores is formed from a material having a lower hardness than the other stacked core.
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