JPS6485500A - Piezoelectric speaker - Google Patents
Piezoelectric speakerInfo
- Publication number
- JPS6485500A JPS6485500A JP24079887A JP24079887A JPS6485500A JP S6485500 A JPS6485500 A JP S6485500A JP 24079887 A JP24079887 A JP 24079887A JP 24079887 A JP24079887 A JP 24079887A JP S6485500 A JPS6485500 A JP S6485500A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- sound generator
- bimorph type
- case
- generators
- 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
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
PURPOSE:To easily improve the sound pressure of an arbitrary frequency band by linking a bimorph type sound generator possessing inherent in resonance frequencies so that a cavity may formed between respective generators, and linking them in the case at their peripheral edge so that cavities are formed on both surfaces. CONSTITUTION:A bimorph type sound generator 7 stuck with piezoelectric elements on the both surfaces of a flat diaphragm 4, and two bimorph type sound generators 10 and 11 stuck with the piezoelectric elements on the both surfaces of a dished diaphragm 4 are fixed at the peripheral edge part so that the sound generator 7 may be sandwiched in the condition to internally form cavities 22 and 23, and the composite sound generator is constituted in such a way. A case 21 is provided in the condition in which the composite sound generator is enclosed, and sound emitting holes 18, 19, 6 and 9 are provided at the suitable positions of the both surfaces of the case and of the diaphragm plate. Thus, since the three bimorph type sound generators are combined and used, the sound pressure of the specific band can be remarkably improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24079887A JPS6485500A (en) | 1987-09-28 | 1987-09-28 | Piezoelectric speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24079887A JPS6485500A (en) | 1987-09-28 | 1987-09-28 | Piezoelectric speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6485500A true JPS6485500A (en) | 1989-03-30 |
Family
ID=17064845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24079887A Pending JPS6485500A (en) | 1987-09-28 | 1987-09-28 | Piezoelectric speaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6485500A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0420125A2 (en) * | 1989-09-25 | 1991-04-03 | Leson S.A. | Electroacoustic piezoelectric transducer having a broad operating range |
KR100434619B1 (en) * | 2001-01-22 | 2004-06-05 | 마쯔시다덴기산교 가부시키가이샤 | Speaker system |
-
1987
- 1987-09-28 JP JP24079887A patent/JPS6485500A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0420125A2 (en) * | 1989-09-25 | 1991-04-03 | Leson S.A. | Electroacoustic piezoelectric transducer having a broad operating range |
KR100434619B1 (en) * | 2001-01-22 | 2004-06-05 | 마쯔시다덴기산교 가부시키가이샤 | Speaker system |
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