JPS611993U

JPS611993U - piezoelectric speaker

Info

Publication number: JPS611993U
Application number: JP8597984U
Authority: JP
Inventors: 真明寺田
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 1984-06-08
Filing date: 1984-06-08
Publication date: 1986-01-08

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 the drawing]

第１図イ，口および第２図イ，口は、夫々、本考案に係
る圧電型スピーカの第′１および第２実施例を示し、第
１図イに第１実施例の概略構成を示す一部断面全体側面
図、第１図町よその動作を示す要部の側面図、そして、
第２図イは第２実施例の概略構成を示す一部断面全体側
面図、第２図口はその動作を示す要部の側面図である。また、第′３図イ，口は従来構成の圧電型スピーカを示
し、第３図イは一部断面全体側面図、第３図町よその動
作を示す要部の側面図である。１・・・薄板部材、１ａ・・・振動端、２・・・圧電素
子、３・・・振動板、７・・・支点、９・・・レバー部
材、Ａ・・・振動子、Ｂ・・・振幅増幅機構。1A and 2B show the first and second embodiments of the piezoelectric speaker according to the present invention, respectively, and FIG. 1A shows the schematic structure of the first embodiment. A partial cross-sectional overall side view, a side view of the main parts showing the operation of the town in Figure 1, and
FIG. 2A is a partially cross-sectional overall side view showing the schematic structure of the second embodiment, and FIG. 2A is a side view of the main part showing its operation. 3A and 3B show a piezoelectric speaker having a conventional structure, FIG. 3B is a side view of the whole in partial section, and FIG. DESCRIPTION OF SYMBOLS 1... Thin plate member, 1a... Vibration end, 2... Piezoelectric element, 3... Vibration plate, 7... Fulcrum, 9... Lever member, A... Vibrator, B... ...Amplitude amplification mechanism.

Claims

[Scope of utility model registration request]

(1) In a piezoelectric speaker configured to vibrate a diaphragm 3 by a vibrator A made by bonding a piezoelectric element 2 to a thin plate member 1, from the vibrating end 1a of the thin plate member 1 of the vibrator A to the A piezoelectric device characterized in that an amplitude amplification mechanism B is interposed across the diaphragm 3 and is capable of amplifying the vibration amplitude at the vibrating end 1a of the thin plate member 1 using the lever principle and transmitting the amplified vibration amplitude to the diaphragm 3. model speaker.

(2) The length of the thin plate member 1 of the vibrator A is determined by the length of the thin plate member 1 of the vibrator A.
The piezoelectric speaker according to claim (1) of the utility model registration claim, which has a radius larger than the radius of the piezoelectric speaker.

(3) In configuring the vibration amplification mechanism B, the base end is swingably connected to the vibration end 1a of the thin plate member 1 of the vibrator A, and the distal end is connected to the vibration plate 3. 2. A piezoelectric speaker according to claim 1 or 2, which is provided with a lever member 9 with a fulcrum and a fulcrum 7 near a base end connection portion of the lever member 9.