JPS5845595U - piezoelectric vibrator - Google Patents

piezoelectric vibrator

Info

Publication number
JPS5845595U
JPS5845595U JP13961381U JP13961381U JPS5845595U JP S5845595 U JPS5845595 U JP S5845595U JP 13961381 U JP13961381 U JP 13961381U JP 13961381 U JP13961381 U JP 13961381U JP S5845595 U JPS5845595 U JP S5845595U
Authority
JP
Japan
Prior art keywords
piezoelectric vibrator
piezoelectric
piezoelectric ceramic
feedback electrode
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP13961381U
Other languages
Japanese (ja)
Other versions
JPH0117914Y2 (en
Inventor
榊原　好豊
浦　和貴
Original Assignee
松下電器産業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 松下電器産業株式会社 filed Critical 松下電器産業株式会社
Priority to JP13961381U priority Critical patent/JPS5845595U/en
Publication of JPS5845595U publication Critical patent/JPS5845595U/en
Application granted granted Critical
Publication of JPH0117914Y2 publication Critical patent/JPH0117914Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の圧電振動板子を示す上面図、第２図は圧
電振動子を駆動する自励発振回路の一例を示す回路図、
第３図は圧電振動子を組み込んだ圧電発音体の一例を示
す断面図、第４図ａ、　　ｂは圧電振動子の基本振動モ
ードにおける節円および第３次振動モードにおける節円
を示す説明図、第５図は第１図の従来の圧電振子におけ
るフィードバック電極からのフィードバック電圧の周波
数特性を示す特性図、第６図は本考案による圧電振動子
の一実施例を示す上面図、第７図は本考案による圧電振
動子におけるフィードバック電極からのフィードバック
電圧の周波数特性を示す特性図である。 １０・・・・・・弾性体薄板、１１・・・・・・圧電磁
器板、１２・・・・・・メイン電極、１３・・曲フィー
ドバック電極。FIG. 1 is a top view showing a conventional piezoelectric diaphragm, and FIG. 2 is a circuit diagram showing an example of a self-excited oscillation circuit that drives the piezoelectric vibrator.
Figure 3 is a sectional view showing an example of a piezoelectric sounding body incorporating a piezoelectric vibrator, and Figures 4a and b are explanatory diagrams showing nodal circles in the fundamental vibration mode and nodal circles in the tertiary vibration mode of the piezoelectric vibrator. , FIG. 5 is a characteristic diagram showing the frequency characteristics of the feedback voltage from the feedback electrode in the conventional piezoelectric pendulum shown in FIG. 1, FIG. 6 is a top view showing an embodiment of the piezoelectric vibrator according to the present invention, and FIG. is a characteristic diagram showing the frequency characteristics of the feedback voltage from the feedback electrode in the piezoelectric vibrator according to the present invention. 10... Elastic thin plate, 11... Piezoelectric ceramic plate, 12... Main electrode, 13... Curved feedback electrode.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）金属板等の弾性体薄板に圧電磁器板を貼り合わせ
た構造もしくは圧電磁器板を相互に貼り合わせた構造で
たわみ振動を誘起する圧電振動子であって、前記圧電磁
器板表面に設けられた電極をメイン電極とフィードバッ
ク電極に分割し、前記フィードバック電極を不要振動モ
ードに対して電荷が零となるように配置してなる圧電振
動子。(1) A piezoelectric vibrator that induces flexural vibration by having a structure in which a piezoelectric ceramic plate is bonded to a thin elastic plate such as a metal plate, or a structure in which piezoelectric ceramic plates are bonded to each other, and is provided on the surface of the piezoelectric ceramic plate. A piezoelectric vibrator comprising: a main electrode and a feedback electrode; and the feedback electrode is arranged so that its charge is zero against unnecessary vibration modes. （２）圧電磁器板を円板とし、フィードバック電極を円
弧上に配置し、しかも基本振動モードの節円部まで部分
的に延長してなる実用新案登録請求の範囲第１項記載の
圧電振動子。(2) The piezoelectric vibrator according to claim 1 of the utility model registration claim, in which the piezoelectric ceramic plate is a disk, the feedback electrode is arranged on a circular arc, and the piezoelectric vibrator is partially extended to the nodal portion of the fundamental vibration mode. .
JP13961381U 1981-09-18 1981-09-18 piezoelectric vibrator Granted JPS5845595U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13961381U JPS5845595U (en) 1981-09-18 1981-09-18 piezoelectric vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13961381U JPS5845595U (en) 1981-09-18 1981-09-18 piezoelectric vibrator

Publications (2)

Publication Number Publication Date
JPS5845595U true JPS5845595U (en) 1983-03-26
JPH0117914Y2 JPH0117914Y2 (en) 1989-05-24

Family

ID=29932795

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13961381U Granted JPS5845595U (en) 1981-09-18 1981-09-18 piezoelectric vibrator

Country Status (1)

Country Link
JP (1) JPS5845595U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60259177A (en) * 1984-06-04 1985-12-21 Chukichi Kudo Preparation of tangle liquor
JP2013078005A (en) * 2011-09-30 2013-04-25 Taiheiyo Cement Corp Parametric speaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816698U (en) * 1981-07-21 1983-02-01 株式会社村田製作所 piezoelectric buzzer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816698B2 (en) * 1978-07-10 1983-04-01 松下電器産業株式会社 Enzyme electrode and its manufacturing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816698U (en) * 1981-07-21 1983-02-01 株式会社村田製作所 piezoelectric buzzer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60259177A (en) * 1984-06-04 1985-12-21 Chukichi Kudo Preparation of tangle liquor
JPS6143994B2 (en) * 1984-06-04 1986-09-30 Chukichi Kudo
JP2013078005A (en) * 2011-09-30 2013-04-25 Taiheiyo Cement Corp Parametric speaker

Also Published As

Publication number Publication date
JPH0117914Y2 (en) 1989-05-24

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