Title:
PIEZOELECTRIC ACTUATOR, DRIVING DEVICE AND CAMERA MODULE
Document Type and Number:
WIPO Patent Application WO/2024/056067
Kind Code:
A1
Abstract:
Disclosed in the present application are a piezoelectric actuator, a driving device and a camera module. The piezoelectric actuator comprises: a piezoelectric vibrator, which comprises a front surface and a back surface, which are arranged opposite each other in a thickness direction; and a friction driving portion, which is fixed to the front surface of the piezoelectric vibrator in the thickness direction, wherein the friction driving portion is eccentrically arranged on the front surface of the piezoelectric vibrator in a lengthwise direction. In the above technical solution, by means of eccentrically providing the friction driving portion, the piezoelectric actuator may have different driving speeds in two opposite directions in the lengthwise direction of the piezoelectric actuator.
Inventors:
TANG LEI (CN)
FU QIANG (CN)
ZHAO BOJIE (CN)
ZHENG XUEYING (CN)
FU QIANG (CN)
ZHAO BOJIE (CN)
ZHENG XUEYING (CN)
Application Number:
PCT/CN2023/119068
Publication Date:
March 21, 2024
Filing Date:
September 15, 2023
Export Citation:
Assignee:
NINGBO SUNNY OPOTECH CO LTD (CN)
International Classes:
H02N2/00
Foreign References:
| US20110292273A1 | 2011-12-01 | |||
| US20110292273A1 | 2011-12-01 | |||
| US20160373630A1 | 2016-12-22 | |||
| CN114879336A | 2022-08-09 | |||
| JP2016032351A | 2016-03-07 | |||
| JP2011227428A | 2011-11-10 |
Attorney, Agent or Firm:
NINGBO JUHE PATENT AGENCY FIRM GP (CN)
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