VIBRATION MOTOR
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United States of America Patent
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N/A
Issued Date -
Aug 31, 2017
app pub date -
Feb 1, 2017
filing date -
Feb 26, 2016
priority date (Note) -
Published
status (Latency Note)
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Abstract
A vibration motor includes a base portion arranged to extend perpendicularly to a central axis extending in a vertical direction; a cover portion arranged above the base portion, and fixed to an outer edge portion of the base portion; a lower bearing portion fixed to the base portion; an upper bearing portion fixed to the cover portion; a shaft arranged to extend along the central axis, and having a lower end portion and an upper end portion rotatably supported by the lower bearing portion and the upper bearing portion, respectively; a rotor holder attached to the shaft; a magnet portion including a plurality of magnetic poles, and attached to the rotor holder; an eccentric weight attached to the rotor holder; a circuit board arranged above the base portion; and a coil portion attached onto the circuit board, and arranged vertically opposite to the magnet portion with a space therebetween.
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