PIEZOELECTRIC LINEAR MOTOR AND CAMERA MODULE COMPRISING SAME
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United States of America Patent
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Issued Date -
Aug 15, 2024
app pub date -
Apr 4, 2024
filing date -
Jan 21, 2022
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Abstract
A piezoelectric motor according to one embodiment may include: a vibrating body including an elastic body and a piezoelectric element attached to the elastic body; and a rod coupled to the vibrating body and configured to move on the basis of vibration of the vibrating body. The piezoelectric element may include a first surface and a second surface facing opposite to the first surface of the piezoelectric element and attached to the elastic body. The rod can extend perpendicular to the piezoelectric element. The vibrating body can be configured to generate a bending vibration in the longitudinal direction of the rod on the basis of a voltage applied to the piezoelectric element, and can be configured to define a nodal position during the bending vibration. The elastic body may include a base portion attached to the second surface of the piezoelectric element and a protruding portion protruding from the base portion and formed at a position corresponding to the nodal position of the vibrating body.
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