JPH01177697U - - Google Patents
Info
- Publication number
- JPH01177697U JPH01177697U JP7173488U JP7173488U JPH01177697U JP H01177697 U JPH01177697 U JP H01177697U JP 7173488 U JP7173488 U JP 7173488U JP 7173488 U JP7173488 U JP 7173488U JP H01177697 U JPH01177697 U JP H01177697U
- Authority
- JP
- Japan
- Prior art keywords
- attached
- diaphragm
- case
- damper
- sounding device
- 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 4
- 239000000758 substrate Substances 0.000 claims 3
- 239000002184 metal Substances 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 2
- 239000011888 foil Substances 0.000 claims 1
- 239000002648 laminated material Substances 0.000 claims 1
- 229920006254 polymer film Polymers 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 229920005549 butyl rubber Polymers 0.000 description 1
Description
第１図乃至第８図は、いずれも本考案の実施例
の断面図、第９図と第１０図は、本考案の第１図
示のものと比較例の周波数特性図、第１１図及び
第１２図は本考案の第３図示のものと比較例の周
波数特性図、第１３図及び第１４図は本考案の第
５図示のものと比較例の周波数特性図、第１５図
は従来例の断面図、第１６図はその周波数特性説
明図である。
１……圧電セラミツク素子板、２，２′……振
動板、３……リング状ブチルゴムダンパ、４……
ケース、５……密閉された空気室、７……非通気
性弾性板、８……非通気性リング状弾性板、９…
…蓋板。
1 to 8 are cross-sectional views of the embodiment of the present invention, FIGS. 9 and 10 are frequency characteristic diagrams of the first embodiment of the present invention and a comparative example, and FIGS. Fig. 12 is a frequency characteristic diagram of the one shown in Fig. 3 of the present invention and a comparative example, Figs. 13 and 14 are frequency characteristic diagrams of the one shown in Fig. 5 of the present invention and a comparative example, and Fig. 15 is a frequency characteristic diagram of the conventional example. The cross-sectional view and FIG. 16 are explanatory diagrams of its frequency characteristics. 1... Piezoelectric ceramic element plate, 2, 2'... Vibration plate, 3... Ring-shaped butyl rubber damper, 4...
Case, 5... Sealed air chamber, 7... Non-breathable elastic plate, 8... Non-breathable ring-shaped elastic plate, 9...
...Lid plate.
Claims (1)
外周縁部をリング状ゴムダンパを介してキヤツプ
状のケースの段部に貼着して該ケースと前記振動
板とにより密閉された空気室を形成し、該ケース
を孔のない基板に取付けることを特徴とする圧電
発音装置。 ２ 前記振動板として金属板を使用したことを特
徴とする請求項１記載の圧電発音装置。 ３ 前記振動板は金属箔と高分子フイルムとを積
層したラミネート材から成ることを特徴とする請
求項１記載の圧電発音装置。 ４ 弾性板から成るダンパに、圧電セラミツク素
子板が貼着された振動板を貼着し、該ダンパの外
周縁部をキヤツプ状のケースの段部に貼着して該
ケースと前記弾性板から成るダンパとにより密閉
された空気室を形成し、該ケースを孔のない基板
に取付けることを特徴とする圧電発音装置。 ５ リング状弾性板から成るダンパの内周縁部に
、圧電セラミツク素子板が貼着された振動板を貼
着し、該ダンパの外周縁部をキヤツプ状のケース
の段部に貼着して該ケースと前記振動板が貼着さ
れたダンパとにより密閉された空気室を形成し、
該ケースを孔のない基板に取付けることを特徴と
する圧電発音装置。[Claims for Utility Model Registration] 1. The outer peripheral edge of a diaphragm to which a piezoelectric ceramic element plate is affixed is affixed to the stepped part of a cap-shaped case via a ring-shaped rubber damper, and the diaphragm and the diaphragm are connected together. 1. A piezoelectric sounding device characterized in that a sealed air chamber is formed by a case, and the case is attached to a substrate without holes. 2. The piezoelectric sounding device according to claim 1, wherein a metal plate is used as the diaphragm. 3. The piezoelectric sounding device according to claim 1, wherein the diaphragm is made of a laminate material in which metal foil and polymer film are laminated. 4. A diaphragm to which a piezoelectric ceramic element plate is attached is attached to a damper made of an elastic plate, and the outer peripheral edge of the damper is attached to a stepped part of a cap-shaped case, and the vibration plate is separated from the case and the elastic plate. 1. A piezoelectric sounding device characterized in that a damper is formed to form a sealed air chamber, and the case is attached to a substrate without holes. 5 A diaphragm to which a piezoelectric ceramic element plate is attached is attached to the inner circumferential edge of a damper made of a ring-shaped elastic plate, and the outer circumferential edge of the damper is attached to the stepped part of a cap-shaped case. A case and a damper to which the diaphragm is attached form a sealed air chamber,
A piezoelectric sounding device characterized in that the case is attached to a substrate without holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7173488U JPH01177697U (en) | 1988-06-01 | 1988-06-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7173488U JPH01177697U (en) | 1988-06-01 | 1988-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01177697U true JPH01177697U (en) | 1989-12-19 |
Family
ID=31296928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7173488U Pending JPH01177697U (en) | 1988-06-01 | 1988-06-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01177697U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04128497U (en) * | 1991-05-18 | 1992-11-24 | 太陽誘電株式会社 | Piezoelectric acoustic device |
| WO2011108441A1 (en) * | 2010-03-01 | 2011-09-09 | パナソニック電工株式会社 | Piezoelectric speaker and alarm apparatus using this piezoelectric speaker |
-
1988
- 1988-06-01 JP JP7173488U patent/JPH01177697U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04128497U (en) * | 1991-05-18 | 1992-11-24 | 太陽誘電株式会社 | Piezoelectric acoustic device |
| WO2011108441A1 (en) * | 2010-03-01 | 2011-09-09 | パナソニック電工株式会社 | Piezoelectric speaker and alarm apparatus using this piezoelectric speaker |
| JP2011205613A (en) * | 2010-03-01 | 2011-10-13 | Panasonic Electric Works Co Ltd | Piezoelectric speaker and alarm apparatus using the piezoelectric speaker |
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