JPH01132199U - - Google Patents
Info
- Publication number
- JPH01132199U JPH01132199U JP2717788U JP2717788U JPH01132199U JP H01132199 U JPH01132199 U JP H01132199U JP 2717788 U JP2717788 U JP 2717788U JP 2717788 U JP2717788 U JP 2717788U JP H01132199 U JPH01132199 U JP H01132199U
- Authority
- JP
- Japan
- Prior art keywords
- recess
- metal plate
- thin
- piezoelectric
- piezoelectric diaphragm
- 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
- 239000002184 metal Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000013013 elastic material Substances 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Description
第１図ａ，ｂ，ｃは本考案の一実施例による圧
電振動板を示す図でａは斜視図、ｂ，ｃは断面図
、第２図は本考案の圧電振動板を用いた圧電発音
体の構造例を示す断面図、第３図は本考案の圧電
振動板の効果を示す圧電振動板の支持圧力と共振
周波数の関係のグラフ、第４図ａ，ｂは従来の圧
電振動板の例を示す斜視図、第５図は従来の圧電
発音体の構造を示す断面図である。
１……圧電素子、２……金属板、３……弾性材
、４……凹部、５……前面ケース、７……背面ケ
ース、６……凸起。
Figures 1 a, b, and c show a piezoelectric diaphragm according to an embodiment of the present invention, a is a perspective view, b and c are cross-sectional views, and Figure 2 is a piezoelectric sound source using the piezoelectric diaphragm of the present invention. 3 is a graph showing the effect of the piezoelectric diaphragm of the present invention and the relationship between the supporting pressure and resonance frequency of the piezoelectric diaphragm. FIG. 4 a and b are graphs of the conventional piezoelectric diaphragm. FIG. 5 is a perspective view showing an example, and a sectional view showing the structure of a conventional piezoelectric sounding body. DESCRIPTION OF SYMBOLS 1...Piezoelectric element, 2...Metal plate, 3...Elastic material, 4...Concave portion, 5...Front case, 7...Back case, 6...Protrusion.
Claims (1)
周部全体に凹部を設け、この凹部全体に液状の充
填材を注入硬化させたゴム状の弾性体を設けた圧
電振動板。 A piezoelectric diaphragm in which a thin metal plate and a thin piezoelectric element plate are bonded together, a recess is provided on the entire outer periphery of the metal plate, and a rubber-like elastic body made by injecting and hardening a liquid filler is provided throughout the recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2717788U JPH01132199U (en) | 1988-03-01 | 1988-03-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2717788U JPH01132199U (en) | 1988-03-01 | 1988-03-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01132199U true JPH01132199U (en) | 1989-09-07 |
Family
ID=31249444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2717788U Pending JPH01132199U (en) | 1988-03-01 | 1988-03-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01132199U (en) |
-
1988
- 1988-03-01 JP JP2717788U patent/JPH01132199U/ja active Pending