Title:
STATOR STRUCTURE OF ULTRASONIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2023/013317
Kind Code:
A1
Abstract:
The present invention is a stator structure 1 of an ultrasonic actuator that rotatably drives a rotor, said stator structure 1 comprising: a stator body 10 integrally formed of a piezoceramic material and having a through-hole having a circular cross-section; and a plurality of drive electrodes 21 to 24 provided on the outer periphery surface of the stator body 10. The outer periphery surface of the stator body 10 has a polygon cross-sectional shape having a plurality of corner potions, wherein a cut 11 is provided at each corner portion. With such configuration, the vibration displacement of the stator of the ultrasonic actuator becomes larger.
Inventors:
MIYOSHI MASAKO (JP)
ADACHI MASATO (JP)
INOUE JUNICHIRO (JP)
ADACHI MASATO (JP)
INOUE JUNICHIRO (JP)
Application Number:
PCT/JP2022/026052
Publication Date:
February 09, 2023
Filing Date:
June 29, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02N2/10
Domestic Patent References:
| WO2007129987A1 | 2007-11-15 | |||
| WO2015113998A1 | 2015-08-06 |
Foreign References:
| CN110971141A | 2020-04-07 | |||
| JP2019009880A | 2019-01-17 | |||
| CN111464070A | 2020-07-28 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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