Rotor and brushless motor
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United States of America Patent
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-
Sep 12, 2023
Grant Date -
N/A
app pub date -
Aug 27, 2021
filing date -
Aug 31, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A rotor applied to an inner rotor brushless motor includes: a rotor core having a laminate of a plurality of annular thin plate-shaped core pieces, the rotor core being configured to rotate together with a shaft in an integrated manner; a cylindrical resin magnet mounted on an outer peripheral surface of the rotor core via a gap; a groove-shaped adhesive admission portion in a straight line along the entire length of the rotor core in an axial direction thereof, the adhesive admission portion being recessed into the outer peripheral surface of the rotor core; and an adhesive configured to bond and fix the rotor core and the magnet. The adhesive is filled in an entire adhesive allowance having both of the gap and the adhesive admission portion between the outer peripheral surface of the rotor core and an inner peripheral surface of the magnet.
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