Title:
超音波送受信器
Document Type and Number:
Japanese Patent JP6752429
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an ultrasonic transceiver which improves durability by preventing destruction of a piezoelectric element including silver electrodes, the ultrasonic transceiver being configured by adhering the piezoelectric element onto a bottom face of a bottomed cylindrical case.SOLUTION: An ultrasonic transceiver comprises: a piezoelectric element 1; silver electrodes that are provided on both surfaces of the piezoelectric element 1 and configured by sintering conductive paste; a bottomed cylindrical case 2 adhering the piezoelectric element 1 including the silver electrodes on a bottom face and consisting of a metal or a resin; a lead wire 9 that is soldered to the silver electrodes; a sound absorption material 6 including a penetration hole through which the lead wire 9 is passed, and being installed so as to cover the piezoelectric element 1 including the silver electrodes; an encapsulation material 11 filling the bottomed cylindrical case 2 from an upper side of the sound absorption material 6; and a wire 12 connected to one end of the lead 9 for securing conduction with the outside. A surface of the silver electrode on a face adhered to the bottomed cylindrical case 2 is made uneven in such a manner that surface roughness Rz becomes 7 μm or more.SELECTED DRAWING: Figure 1
More Like This:
| WO/2023/090713 | ELECTRONIC DEVICE INCLUDING SPEAKER |
Inventors:
Fukada Seiya
Application Number:
JP2016241951A
Publication Date:
September 09, 2020
Filing Date:
December 14, 2016
Export Citation:
Assignee:
Nippon Ceramic Co., Ltd.
International Classes:
H04R1/02; H04R1/06; H04R17/00
Domestic Patent References:
| JP2014082653A | ||||
| JP2014082655A | ||||
| JP11164847A |
Foreign References:
| WO2009050881A1 |