Miniature Sound Generator
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United States of America Patent
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Issued Date -
Dec 15, 2016
app pub date -
Jan 24, 2016
filing date -
Jun 12, 2015
priority date (Note) -
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Abstract
A miniature sound generator is disclosed. The miniature sound generator includes: a vibration system; a magnetic circuit system including a permanent magnet accommodated in a magnetic bowl and a pole piece located on the permanent magnet; and a housing for accommodating and fixing the vibration system. The permanent magnet includes a first through-hole, the pole piece has a second through-hole, and the magnetic bowl includes a blind hole.
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