ULTRASONIC MOTOR
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United States of America Patent
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N/A
Issued Date -
Nov 30, 2023
app pub date -
Aug 15, 2023
filing date -
Apr 12, 2021
priority date (Note) -
Published
status (Latency Note)
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Abstract
An ultrasonic motor is provided that includes a stator having a plate-shaped vibrating body with first and second opposing main surfaces and a through-hole penetrating in a direction in which the first and second main surfaces face each other, and a piezoelectric element on the first main surface. Moreover, a stator fixing member is provided having a rotor in contact with the second main surface, a main body portion is disposed on the first main surface side, and a whirl-stop portion extends from the main body portion toward the vibrating body side. The whirl-stop portion and the through-hole of the stator have a polygonal shape in a plan view. The number of vertices of the whirl-stop portion and the through-hole is the same, and the whirl-stop portion and the through-hole are fitted to each other.
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