VIBRATION MOTOR, VIBRATOR-ATTACHED BOARD, SILENT NOTIFICATION DEVICE, AND METHOD FOR MANUFACTURING VIBRATION MOTOR
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United States of America Patent
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Issued Date -
Jun 29, 2017
app pub date -
Dec 21, 2016
filing date -
Dec 25, 2015
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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 shaft having a lower end fixed to the base portion, and arranged to project upward along the central axis; a circuit board; a coil portion; a bearing portion; a rotor holder; a magnet portion; an eccentric weight; a cover portion; and a motor electrode portion electrically connected to the circuit board, and arranged to project downward below a lower surface of the base portion. The entire base portion and the entire circuit board are arranged inside of an outer circumferential edge of a lower end of the cover portion.
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