JPS5843098U

JPS5843098U - piezoelectric speaker

Info

Publication number: JPS5843098U
Application number: JP13950581U
Authority: JP
Inventors: 森川　英次; 茂本多
Original assignee: 三洋電機株式会社
Priority date: 1981-09-18
Filing date: 1981-09-18
Publication date: 1983-03-23

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ａ、及びｂは従来の圧電型スピーカに用いられる
圧電振動子の斜視図、及び断面図、第２図は本考案圧電
型スピーカの一実施例の断面図、第３図ａ、　　ｂ、　
　ｃは夫々本考案圧電型スピーカの要部の正面図並びに
−壁断面側面図、第４図ａ。ｂは夫々本考案圧電型スピーカの動作状態を示す模式図
、第５図は周波数特性曲線図を夫々示している。２．６・・・・・・金属薄板、３・・・・・・圧電材料
板、４゜５・・・・・・環状圧電振動子、７・・・・・
・折曲突起部、８・・・・・・圧電材料片、９・・・・
・・圧電振動板。（α）　　　　　　　　　ｊ？第２図弊第５図１３図Figures 1a and b are perspective views and cross-sectional views of a piezoelectric vibrator used in a conventional piezoelectric speaker, Figure 2 is a cross-sectional view of an embodiment of the piezoelectric speaker of the present invention, and Figures 3a and b. ,
4c is a front view and a wall cross-sectional side view of the main parts of the piezoelectric speaker of the present invention, respectively; FIG. 4a; b shows a schematic diagram showing the operating state of the piezoelectric speaker of the present invention, and FIG. 5 shows a frequency characteristic curve diagram, respectively. 2.6...Thin metal plate, 3...Piezoelectric material plate, 4゜5...Annular piezoelectric vibrator, 7...
・Bending protrusion, 8...Piezoelectric material piece, 9...
...Piezoelectric diaphragm. (α) j? Figure 2 Figure 5 Figure 13

Claims

[Scope of utility model registration request]

(1) An annular piezoelectric vibrator consisting of an annular thin metal plate having a plurality of protrusions at equiangular positions from the center, and a plurality of pieces of piezoelectric material separately bonded between each protrusion of the thin metal plate. A plurality of piezoelectric material pieces are stacked, and the plurality of protrusions of the lower layer annular piezoelectric vibrator are joined to the intermediate positions of the piezoelectric material pieces located between the protrusions of the upper layer annular piezoelectric vibrator, and the uppermost layer annular piezoelectric vibrator is A piezoelectric speaker characterized by having an acoustic diaphragm coupled to a plurality of protrusions of a vibrator.

(2) A piezoelectric speaker according to claim 1, wherein the plurality of projections of the annular piezoelectric vibrator are bent projections formed by bending the annular thin metal plate.

(3) As the acoustic diaphragm, a piezoelectric diaphragm is used, in which a piezoelectric material plate is bonded to a disc-shaped thin metal plate having the same outer diameter as the annular piezoelectric vibrator; Utility model registration claim 1 or 2, in which a plurality of protrusions of a piezoelectric vibrator are coupled to peripheral positions of the piezoelectric diaphragm
The piezoelectric speaker described in Section 1.

(4) The piezoelectric speaker according to claim 3, wherein the piezoelectric diaphragm used as the acoustic diaphragm is provided with an annular rising edge by bending the periphery of the metal thin plate.