Rotary electric machine
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United States of America Patent
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Dec 5, 2023
Grant Date -
Jan 7, 2021
app pub date -
Sep 18, 2020
filing date -
Mar 20, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
According to one embodiment, a rotor core satisfies a relationship: W2/W1≤(A1+A2)/A1. Where, A1 represents an area of a region defined by a polar central axis, an outer circumferential surface of the rotor core and a first imaginary linear line extending on an outer circumferential-side long edge of an embedding hole, A2 represents an area of a region defined by the polar central axis, a q-axis, the outer circumferential surface of the rotor core, a second imaginary linear line extending on an inner circumferential-side long edge of the embedding hole, a third imaginary linear line extending on a first edge of the cavity hole, W1 represents a half-width of a first bridge portion, and W2 represents a half-width of the second bridge portion.
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