JPH01126697U

JPH01126697U -

Info

Publication number: JPH01126697U
Application number: JP20055487U
Authority: JP
Priority date: 1987-12-28
Filing date: 1987-12-28
Publication date: 1989-08-30

Description

[Brief explanation of drawings]

第１図ａおよびｂは本考案の一実施例による圧
電形電気音響変換器の構造を示す部分切欠斜視図
、および断面図、第２図は同圧電形電気音響変換
器の圧電振動子の構成を示す斜視図、第３図は従
来の圧電形電気音響変換器の構造を示す断面図で
ある。１……圧電振動子、２……セラミツク圧電体、
３……金属振動板、４，５……リード線、６……
前面ケース、６ａ……前面ケースの頂部、６ｂ…
…前面ケースの周辺円筒部、６ｃ……前面ケース
の折曲部、６ｄ……前面ケースの小孔、７……背
面ケース、７ａ……背面ケースの外縁部、７ｃ…
…背面ケースの小孔。 Figures 1a and b are partially cutaway perspective views and sectional views showing the structure of a piezoelectric electroacoustic transducer according to an embodiment of the present invention, and Figure 2 is a configuration of a piezoelectric vibrator of the piezoelectric electroacoustic transducer. FIG. 3 is a sectional view showing the structure of a conventional piezoelectric electroacoustic transducer. 1...Piezoelectric vibrator, 2...Ceramic piezoelectric body,
3... Metal diaphragm, 4, 5... Lead wire, 6...
Front case, 6a...Top of front case, 6b...
... Peripheral cylindrical part of the front case, 6c... Bent part of the front case, 6d... Small hole in the front case, 7... Back case, 7a... Outer edge of the back case, 7c...
...Small hole in the back case.

Claims

[Scope of utility model registration request]

A piezoelectric vibrator in which a ceramic piezoelectric body is attached to a metal diaphragm, and lead wires are connected to the ceramic piezoelectric body and the metal diaphragm, respectively, and a top portion having a small hole is connected to a peripheral cylindrical portion through a downward bending portion. The metal diaphragm of the piezoelectric vibrator is formed by bending the outer edge of the back case and the front case. The piezoelectric electroacoustic transducer is fixed to an outer edge of the rear case by bending a peripheral cylindrical lower end of the front case.