Piezoelectric vibration module
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United States of America Patent
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Nov 28, 2017
Grant Date -
Jul 9, 2015
app pub date -
Dec 18, 2014
filing date -
Jan 8, 2014
priority date (Note) -
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Abstract
Embodiments of the invention provide a piezoelectric vibration module, including a vibration plate mounted with a piezoelectric element, which generates a vibration force in a vertical direction by being repeatedly expanded and contracted depending on external power applied thereto, and a lower case coupled with both ends of the vibration plate so as to be spaced apart from the vibration plate. The piezoelectric vibration module further includes a bar-shaped weight body increasing the vibration force of the piezoelectric element, and an elastic member interposed between the vibration plate and the weight body.
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