Rotor and motor
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United States of America Patent
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-
Aug 4, 2020
Grant Date -
Nov 2, 2017
app pub date -
Apr 27, 2017
filing date -
May 2, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A rotor includes a rotary shaft having a non-magnetic body, a plurality of rotor cores, and a plurality of permanent magnets disposed between the plurality of rotor cores, wherein a concave section extending in an axial direction is formed in any one of the non-magnetic body and a base end of the rotor core, and a convex section fitted into the concave section is formed at the other, the concave section is formed by a key groove section and a dovetail groove section in communication with each other, the convex section is formed by a key section configured to fit into the key groove section and a dovetail protrusion configured to fit into the dovetail groove section, the key section and the dovetail protrusion being integrally formed with each other, and a gap is formed between the dovetail groove section and the dovetail protrusion in the circumferential direction.
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