Power generation device
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United States of America Patent
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Oct 4, 2022
Grant Date -
Sep 12, 2019
app pub date -
May 30, 2019
filing date -
Dec 1, 2016
priority date (Note) -
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Abstract
A power generation device is provided. A weight may vibrate in one direction as an axial direction in response to an external vibration. A beam may be arranged in at least one side with respect to the weight in the axial direction of the weight, and vibrate together with the weight. A piezoelectric element may be mounted on the beam. A guide may include a hollow guiding a movement of the weight in the axial direction. A stopper may be included in the weight. The stopper may restrict an amount of the movement of the weight in the axial direction within a predetermined amount. A stopper wall may stop the movement of the weight in the axial direction by contacting with the stopper.
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