JPH0356296U - - Google Patents
Info
- Publication number
- JPH0356296U JPH0356296U JP11715189U JP11715189U JPH0356296U JP H0356296 U JPH0356296 U JP H0356296U JP 11715189 U JP11715189 U JP 11715189U JP 11715189 U JP11715189 U JP 11715189U JP H0356296 U JPH0356296 U JP H0356296U
- Authority
- JP
- Japan
- Prior art keywords
- conductor patterns
- piezoelectric
- recess
- air chamber
- insulating layer
- 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
Links
- 239000004020 conductor Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims 4
- 238000009423 ventilation Methods 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Description
第１図は従来の圧電形電気音響変換器に用いる
圧電振動子の構造例を示す平面図、第２図、第３
図は従来の圧電形電気音響変換器の構造の一例を
示す断面図、第４図は従来例に用いる端子板の構
造例を示す平面図、第５図ａ，ｂは従来例に用い
る導体板の構造例を示す平面図及び断面図、第６
図は本考案の実施例を示す断面図、第７図は本考
案の圧電形電気音響変換器のケースを除く一実施
例を示す断面図、第８図は本考案に用いる端子板
の構造例を示す平面図、第９図は本考案の圧電形
電気音響変換器に用いられるバツクカバの構造例
を説明するための断面図である。
１……振動基板、１−１……振動基板上の導電
層を施していない部分、２……圧電セラミツク素
子、３，３−１，３−２……電極、４……絶縁層
、５……導電層、６……リード線、７，２７……
端子板、７−１，７−２，９−１，９−２，２７
−１，２７−２……導電パターン、８−１，８−
２……端子、９……導体板、１０……スルーホー
ル、１１……バツクカバ、１２……小気室、２７
−３……通気孔。
Figure 1 is a plan view showing an example of the structure of a piezoelectric vibrator used in a conventional piezoelectric electroacoustic transducer;
The figure is a cross-sectional view showing an example of the structure of a conventional piezoelectric electroacoustic transducer, FIG. 4 is a plan view showing an example of the structure of a terminal plate used in the conventional example, and FIGS. 5 a and b are conductor plates used in the conventional example. A plan view and a sectional view showing a structural example of
The figure is a cross-sectional view showing an embodiment of the present invention, Figure 7 is a cross-sectional view showing an embodiment of the piezoelectric electroacoustic transducer of the present invention excluding the case, and Figure 8 is an example of the structure of a terminal plate used in the present invention. FIG. 9 is a cross-sectional view for explaining a structural example of a back cover used in the piezoelectric electroacoustic transducer of the present invention. DESCRIPTION OF SYMBOLS 1... Vibration board, 1-1... Part of the vibration board on which the conductive layer is not applied, 2... Piezoelectric ceramic element, 3, 3-1, 3-2... Electrode, 4... Insulating layer, 5 ...Conductive layer, 6... Lead wire, 7, 27...
Terminal board, 7-1, 7-2, 9-1, 9-2, 27
-1, 27-2... Conductive pattern, 8-1, 8-
2...Terminal, 9...Conductor plate, 10...Through hole, 11...Back cover, 12...Air chamber, 27
-3...Vent hole.
Claims (1)
子の一方の電極を金属の振動基板に貼りつけた圧
電振動子と、 前記対をなす電極にそれぞれ接続されるために
一面上に形成された２つの導体パターンと該２つ
の導体パターンにそれぞれ接続される２つの外部
端子と一方の表面から他方の面に貫通する通気孔
とを有する端子板と、 該端子板の前記圧電振動子の側とは反対の面側
に前記通気孔を覆うように配置されて該端子板と
の間に小気室を形成するためのバツクカバとを備
え、 前記振動基板は周縁部以外の中央部分に凹陥部
が形成され該凹陥部に前記圧電セラミツク素子が
貼りつけられ、 該振動基板上の前記圧電セラミツク素子が貼り
つけられた部分以外の少なくとも一部分の面に絶
縁層が施されるとともに前記一方の電極とは異な
る他方の電極から前記絶縁層上まで導電層が施さ
れ、 前記圧電振動子と前記端子板との積み重ね結合
により前記導電層が前記２つの導体パターンの一
方に接触するとともに該２つの導体パターンの他
方は前記振動基板の周縁部上の前記絶縁層が施さ
れていない部分に接触して一体化され、 さらに、前記振動基板と前記端子板との間に形
成される空気室は前記通気孔を介して前記小気室
に連絡される ように構成された圧電形電気音響変換器。[Claims for Utility Model Registration] A piezoelectric vibrator in which one electrode of a piezoelectric ceramic element having paired electrodes on both sides is attached to a metal vibrating substrate; a terminal board having two conductor patterns formed thereon, two external terminals respectively connected to the two conductor patterns, and a ventilation hole penetrating from one surface to the other surface; a back cover disposed to cover the ventilation hole on the side opposite to the vibrator side to form a small air chamber between the vibrating board and the terminal board; A recess is formed in the recess, the piezoelectric ceramic element is pasted in the recess, an insulating layer is applied to at least a portion of the surface of the vibrating substrate other than the part to which the piezoelectric ceramic element is pasted, and A conductive layer is applied from the other electrode different from the one electrode to the insulating layer, and the conductive layer contacts one of the two conductor patterns due to the stacked connection of the piezoelectric vibrator and the terminal plate. The other of the two conductor patterns is in contact with and integrated with a portion on the peripheral edge of the vibrating substrate where the insulating layer is not applied, and further, an air chamber is formed between the vibrating substrate and the terminal plate. a piezoelectric electroacoustic transducer configured to communicate with the small air chamber via the vent hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989117151U JPH0728799Y2 (en) | 1989-10-06 | 1989-10-06 | Piezoelectric electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989117151U JPH0728799Y2 (en) | 1989-10-06 | 1989-10-06 | Piezoelectric electroacoustic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0356296U true JPH0356296U (en) | 1991-05-30 |
| JPH0728799Y2 JPH0728799Y2 (en) | 1995-06-28 |
Family
ID=31665391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989117151U Expired - Fee Related JPH0728799Y2 (en) | 1989-10-06 | 1989-10-06 | Piezoelectric electroacoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0728799Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4723153U (en) * | 1971-04-09 | 1972-11-15 | ||
| JPS6267724U (en) * | 1985-10-18 | 1987-04-27 | ||
| JPS6449610A (en) * | 1987-08-20 | 1989-02-27 | Nitto Kogyo Kk | Manufacture of roll mold |
-
1989
- 1989-10-06 JP JP1989117151U patent/JPH0728799Y2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4723153U (en) * | 1971-04-09 | 1972-11-15 | ||
| JPS6267724U (en) * | 1985-10-18 | 1987-04-27 | ||
| JPS6449610A (en) * | 1987-08-20 | 1989-02-27 | Nitto Kogyo Kk | Manufacture of roll mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0728799Y2 (en) | 1995-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |