Rotor for motor and motor
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United States of America Patent
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May 28, 2013
Grant Date -
Apr 21, 2011
app pub date -
Oct 20, 2010
filing date -
Oct 20, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A rotor for motor may include a rotation shaft, a permanent magnet structured in a tube-like shape and fixed to an outer peripheral side of the rotation shaft, and a sleeve which is structured in a tube-like shape, disposed between an outer peripheral face of the rotation shaft and an inner peripheral face of the permanent magnet, and press-fitted and fixed to the outer peripheral face of the rotation shaft. The sleeve is retreated from an end part of the permanent magnet on one side in an axial direction to the other side in the axial direction so that a first ring-shaped recessed part is formed between the rotation shaft and the permanent magnet and the rotation shaft and the permanent magnet are fixed to each other with a first adhesive in the first ring-shaped recessed part. The rotor may be applied to a motor, preferably to a stepping motor.
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