US 12,294,317 B2
Piezoelectric ultrasonic motor with a more stable vibration body
Tatsuki Wade, Yamato (JP)
Assigned to New Shicoh Motor Co. LTD, Zhejiang (CN)
Filed by New Shicoh Motor Co., Ltd., Zhejiang (CN)
Filed on Feb. 21, 2023, as Appl. No. 18/172,033.
Claims priority of application No. 202210161417.0 (CN), filed on Feb. 22, 2022.
Prior Publication US 2023/0268850 A1, Aug. 24, 2023
Int. Cl. H02N 2/16 (2006.01); H02N 2/02 (2006.01); H02N 2/04 (2006.01)
CPC H02N 2/163 (2013.01) [H02N 2/026 (2013.01); H02N 2/046 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A piezoelectric ultrasonic motor, comprising:
a columnar body having two opposite bottom surface portions and a plurality of side surface portions surrounding a region between the two opposite bottom surface portions, and having a through hole that penetrates between the two opposite bottom surface portions;
a driving shaft inserted through the through hole of the columnar body; and
a flexible printed circuit (FPC) on which a plurality of sheet-like piezoelectric elements elements are mounted, wherein the FPC has an FPC main body bringing the plurality of piezoelectric elements into contact respectively with the plurality of side surface portions of the columnar body and is wound around the columnar body, and can supply driving electric power to the plurality of sheet-like piezoelectric elements.