PERMANENT MAGNET EMBEDDED MOTOR AND PUMP DEVICE
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United States of America
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Issued Date -
Mar 20, 2025
app pub date -
Jun 20, 2024
filing date -
Jun 20, 2024
priority date (Note) -
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Abstract
A permanent magnet embedded motor includes: a stator of an annular shape; a rotor, arranged inside the stator, including a rotor core and a permanent magnet, and rotating about a predetermined axis. The rotor core includes an insertion hole arranged in a circumferential direction and a filling part provided adjacent to the insertion hole for filling with an adhesive. The permanent magnet is inserted into the insertion hole. The insertion hole includes a wall surface to which the permanent magnet adheres. At one opening end of the insertion hole, the filling part is of a shape obtained by cutout in a stepped-down manner in an inner edge area of the insertion hole corresponding to the wall surface.
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