JPH0446798U - - Google Patents
Info
- Publication number
- JPH0446798U JPH0446798U JP8975490U JP8975490U JPH0446798U JP H0446798 U JPH0446798 U JP H0446798U JP 8975490 U JP8975490 U JP 8975490U JP 8975490 U JP8975490 U JP 8975490U JP H0446798 U JPH0446798 U JP H0446798U
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- plate
- outer diameter
- elastic
- thin 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Description
第１図は本考案に係る圧電発音装置の一実施例
の縦断面図、第２図は第１図で用いている外径の
異なる圧電振動板の斜視図、第３図は外径の小さ
い圧電振動板の周波数−音圧特性図、第４図は外
径の大きい圧電振動板の周波数−音圧特性図、第
５図は第３図に示す特性の圧電振動板と第４図に
示す特性の圧電振動板とを組合せた総合周波数−
音圧特性図、第６図は従来の圧電振動板の周波数
−音圧特性図、第７図は従来の圧電発音置の縦断
面図である。
１，２……弾性体薄板、３，４……圧電セラミ
ツク板、５，６……圧電振動板、７……ケース、
８……キヤビテイ、１０……放音孔、２３……ス
ペーサ。
Figure 1 is a longitudinal cross-sectional view of an embodiment of a piezoelectric sound device according to the present invention, Figure 2 is a perspective view of a piezoelectric diaphragm with a different outer diameter used in Figure 1, and Figure 3 is a smaller outer diameter. Figure 4 shows the frequency-sound pressure characteristics of a piezoelectric diaphragm. Figure 5 shows the piezoelectric diaphragm with the characteristics shown in Figure 3 and Figure 4. Total frequency combined with the characteristic piezoelectric diaphragm
FIG. 6 is a frequency-sound pressure characteristic diagram of a conventional piezoelectric diaphragm, and FIG. 7 is a vertical cross-sectional view of a conventional piezoelectric sound device. 1, 2... Elastic thin plate, 3, 4... Piezoelectric ceramic plate, 5, 6... Piezoelectric diaphragm, 7... Case,
8...Cavity, 10...Sound emission hole, 23...Spacer.
Claims (1)
合せた構造で外径が異なる圧電振動板が厚み方向
に間隔をおいて対向配置されている圧電発音装置
において、外径が小さい方の前記圧電振動板は、
その前記弾性体薄板の周縁部がスペーサを介して
外径の大きい前記圧電振動板の前記弾性体薄板の
板面に支持されていることを特徴とする圧電発音
装置。 In a piezoelectric sound device having a structure in which a piezoelectric ceramic plate is bonded to the center side of a thin elastic plate, piezoelectric diaphragms with different outer diameters are arranged facing each other at intervals in the thickness direction, the piezoelectric vibration of the one with the smaller outer diameter The board is
A piezoelectric sounding device characterized in that a peripheral edge of the elastic thin plate is supported by a plate surface of the elastic thin plate of the piezoelectric diaphragm having a large outer diameter via a spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8975490U JPH0446798U (en) | 1990-08-28 | 1990-08-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8975490U JPH0446798U (en) | 1990-08-28 | 1990-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0446798U true JPH0446798U (en) | 1992-04-21 |
Family
ID=31823962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8975490U Pending JPH0446798U (en) | 1990-08-28 | 1990-08-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0446798U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5428861B2 (en) * | 2007-11-12 | 2014-02-26 | 日本電気株式会社 | Piezoelectric acoustic element and electronic device |
| JPWO2014174730A1 (en) * | 2013-04-25 | 2017-02-23 | 株式会社村田製作所 | Ultrasonic generator |
| JPWO2014174729A1 (en) * | 2013-04-24 | 2017-02-23 | 株式会社村田製作所 | Ultrasonic generator |
-
1990
- 1990-08-28 JP JP8975490U patent/JPH0446798U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5428861B2 (en) * | 2007-11-12 | 2014-02-26 | 日本電気株式会社 | Piezoelectric acoustic element and electronic device |
| JPWO2014174729A1 (en) * | 2013-04-24 | 2017-02-23 | 株式会社村田製作所 | Ultrasonic generator |
| JPWO2014174730A1 (en) * | 2013-04-25 | 2017-02-23 | 株式会社村田製作所 | Ultrasonic generator |
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