VIBRATION MOTOR, SILENT NOTIFICATION DEVICE, AND METHOD OF MANUFACTURING VIBRATION MOTOR
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United States of America Patent
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N/A
Issued Date -
May 25, 2017
app pub date -
Nov 23, 2016
filing date -
Nov 25, 2015
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A vibration motor includes a base portion, a magnet portion, an annular vibrating portion including a coil portion, and a mass portion, the vibrating portion being arranged around the magnet portion; a cover portion fixed to the base portion, and arranged to cover upper and lateral sides of the vibrating portion; and an annular elastic member arranged between the cover portion and the vibrating portion, and joined to both the upper portion of the cover portion and the vibrating portion. An inner edge portion of the elastic member is arranged radially inward of an inner circumferential edge of the mass portion. The inner edge portion of the elastic member includes a positioning portion defined therein. An outer surface of the upper portion of the cover portion includes a joint portion indicating a position at which the cover portion and the elastic member are joined to each other.
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