JPS59154985U

JPS59154985U - ultrasonic transducer

Info

Publication number: JPS59154985U
Application number: JP4875083U
Authority: JP
Inventors: 進片山; 直哉東; 峰雄岡本
Original assignee: 松下電工株式会社
Priority date: 1983-03-31
Filing date: 1983-03-31
Publication date: 1984-10-17

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来例の断面図、第２図は本考案の一実施例を
示す断面図、第３図は本考案の異なる実施例を示す断面
図である。１・・・ケース、２・・・圧電素子、３・・・補強材、
４・・・背板、５・・・シーリング材、６・・・端子板
、７・・・端子、８・・・リード線、９・・・吸音材。FIG. 1 is a cross-sectional view of a conventional example, FIG. 2 is a cross-sectional view showing one embodiment of the present invention, and FIG. 3 is a cross-sectional view showing a different embodiment of the present invention. 1... Case, 2... Piezoelectric element, 3... Reinforcement material,
4... Back plate, 5... Sealing material, 6... Terminal board, 7... Terminal, 8... Lead wire, 9... Sound absorbing material.

Claims

[Scope of utility model registration request]

In an ultrasonic transducer having a waterproof structure in which a piezoelectric element is fixed to the inside front surface of a bottomed cylindrical case and the open end of the case is covered with a back plate, a sound absorbing material is provided in the space of the case, and a sound absorbing material is provided in the space of the case. An ultrasonic transducer characterized in that a gap is provided between a sound absorbing material and the piezoelectric element.