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Title:
PIEZOELECTRIC ACTUATOR, UNDERWATER ACOUSTIC TRANSDUCER AND METHOD FOR PRODUCING UNDERWATER ACOUSTIC TRANSDUCER
Document Type and Number:
WIPO Patent Application WO/2018/041239
Kind Code:
A1
Abstract:
A piezoelectric actuator (100) and an underwater acoustic transducer based on this actuator, so as to solve technical problems existing in the prior art regarding low bending and twisting strength and easy damageability of a transducer driven by transverse mode single crystal piezoelectric elements. The piezoelectric actuator (100) comprises an outer piezoelectric assembly and an inner piezoelectric assembly arranged in the internal of the outer piezoelectric assembly, wherein the outer piezoelectric assembly comprises four outer piezoelectric elements (110), with the four outer piezoelectric elements (110) successively adjoining each other along their axial-length edges to form a square pipe construction; and the inner piezoelectric assembly comprises a plurality of inner piezoelectric elements (120), wherein the cut, the length and the thickness of the inner piezoelectric assembly are the same as those of the outer piezoelectric assembly, while its circumferential length thereof is smaller than that of the outer piezoelectric assembly, and an axial-length edge or an outer surface of the inner piezoelectric assembly is in connection with and bonded onto an inner surface of the outer piezoelectric element, to provide mutual support between the outer piezoelectric assembly and the inner piezoelectric assembly and accordingly, significantly improve the overall bending and breakage resistance of the piezoelectric actuator (100). An underwater projector of Tonpilz design using a piezoelectric actuator (100) as its motor section is also described.

Inventors:
WANG, Zhipeng (C203, Area B-6 Northern Territory,No. 66 Xixiaokou Road, Haidian District, Beijing 2, 100192, CN)
LIU, Guoxi (C203, Area B-6 Northern Territory,No. 66 Xixiaokou Road, Haidian District, Beijing 2, 100192, CN)
WANG, Penghui (C203, Area B-6 Northern Territory,No. 66 Xixiaokou Road, Haidian District, Beijing 2, 100192, CN)
SHI, Huaduo (C203, Area B-6 Northern Territory,No. 66 Xixiaokou Road, Haidian District, Beijing 2, 100192, CN)
Application Number:
CN2017/100076
Publication Date:
March 08, 2018
Filing Date:
August 31, 2017
Export Citation:
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Assignee:
BEIJING SUPERSONIC TECHNOLOGY CO., LTD. (C203, Area B-6 Northern Territory,No. 66 Xixiaokou Road, Haidian District, Beijing 2, 100192, CN)
International Classes:
G10K9/122
Foreign References:
CN106205582A2016-12-07
CN206134235U2017-04-26
CN103841499A2014-06-04
CN104137285A2014-11-05
CN201410461Y2010-02-24
CN102568464A2012-07-11
CN103246059A2013-08-14
JPH11136198A1999-05-21
US20120161581A12012-06-28
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (Room 1215-1218, Zuoan Gongshe Plaza 12th Floor68 North Fourth Ring Road W., Haidian, Beijing 0, 100080, CN)
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