JPH0329996U

JPH0329996U -

Info

Publication number: JPH0329996U
Application number: JP9049289U
Authority: JP
Priority date: 1989-07-31
Filing date: 1989-07-31
Publication date: 1991-03-25

Description

[Brief explanation of drawings]

第１図は、この考案の一実施例に係る圧電サウ
ンダーを示す断面図である。第２図は、第１図中
の圧電振動板を示す平面図である。第３図は、従
来の圧電サウンダーに用いられている圧電振動板
を示すものであり、Ａはその平面図、Ｂはその側
面図である。４……圧電セラミツク素子、６……圧電セラミ
ツク、８，１０……電極、１２……金属板、２０
……圧電振動板、２２……絶縁体、２４……導電
体、３０……ケース、３６……裏蓋、３８……端
子導体、３８ａ……露出部。 FIG. 1 is a sectional view showing a piezoelectric sounder according to an embodiment of this invention. FIG. 2 is a plan view showing the piezoelectric diaphragm in FIG. 1. FIG. 3 shows a piezoelectric diaphragm used in a conventional piezoelectric sounder, with A being a plan view thereof and B being a side view thereof. 4... Piezoelectric ceramic element, 6... Piezoelectric ceramic, 8, 10... Electrode, 12... Metal plate, 20
... Piezoelectric diaphragm, 22 ... Insulator, 24 ... Conductor, 30 ... Case, 36 ... Back cover, 38 ... Terminal conductor, 38a ... Exposed part.

Claims

[Scope of utility model registration request]

A piezoelectric ceramic element is conductively bonded to a metal plate, an insulator is provided so as to span the electrode on the surface of the piezoelectric ceramic element and the metal plate, and a conductor for drawing out the electrode is provided from the conductive electrode to the insulator on the metal plate. A piezoelectric diaphragm having a similar structure is fitted into a case to support its peripheral edge, and within the case and on the rear side of the piezoelectric diaphragm is a back cover having a set of terminal conductors, at least each terminal. Insert the conductor with a portion exposed on the front side, press it against the periphery of the piezoelectric diaphragm, and then contact the exposed portion of each terminal conductor with the metal plate of the piezoelectric diaphragm and the conductor on it. A piezoelectric sounder characterized by being electrically connected to each other.