Washing machine driving apparatus and washing machine including same
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United States of America Patent
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May 28, 2019
Grant Date -
Feb 16, 2017
app pub date -
Apr 29, 2015
filing date -
Apr 30, 2014
priority date (Note) -
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Abstract
A washing machine driving apparatus comprises: a drive motor of a double rotor-double stator structure where the drive motor comprises an inner rotor and an outer rotor controllable independently by a double stator, and optionally generating inner rotor output and outer rotor output; a first inner shaft transferring the inner rotor output as a first input; a first outer shaft rotatably coupled to an outer periphery of the first inner shaft, and transferring the outer rotor output as a second input; a planetary gear unit where a gear ratio of a transmission output generated from a carrier is controlled by the second input applied to a ring gear through the first outer shaft, when the first input is applied to a sun gear through the first inner shaft; and a protection unit protecting the inner rotor where an outer peripheral portion of protection unit is supported by the double stator.
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