JPS60121398U - piezoelectric speaker - Google Patents
piezoelectric speakerInfo
- Publication number
- JPS60121398U JPS60121398U JP839084U JP839084U JPS60121398U JP S60121398 U JPS60121398 U JP S60121398U JP 839084 U JP839084 U JP 839084U JP 839084 U JP839084 U JP 839084U JP S60121398 U JPS60121398 U JP S60121398U
- Authority
- JP
- Japan
- Prior art keywords
- vibrating body
- piezoelectric speaker
- mesh
- bent part
- stretched
- 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)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来より圧電型スピーカに用いられている振動
体の一例を示す外観斜視図、第２図は上記振動体の構成
および各電極と印加される信号型、 圧との関係を示す
模式図、第３図Ａおよび第３図Ｂは上記振動体の各電極
に印加される信号電圧の極性が互いに異なる場合の動作
を示す模式図、第４図は上記振動体の空気体積排除動作
を示しており、第４図Ａは信号電圧を各電極に印加しな
い場合、第４図Ｂおよび第４図Ｃは互いに異なる極性の
信号電圧を各電極に印加した場合をそれぞれ示す模式図
である。第５図は本考案に係る圧電型スピーカの一実施
例において振動体の幅方向全面にフレームからメツシュ
を張った場合を示す外観斜視図、第６図は第５図に示し
た実施例および従来の圧電型スピーカにおいて周波数と
音圧レベルと 。
の関係を示す周波数特性図、第７図ないし第９図はメツ
シュをフレームから張らず振動体上のみに張った場合を
示しており、第７図は振動体の幅方向全面に張った場合
、第８図は振動体の幅方向の両端部に張った場合、第９
図は振動体の幅方向の両端部および中央部の表裏両面に
張った場合をそれぞれ示す外観斜視図である。
１．２・・・圧電フィルム、３ａ、３ｂ・・・折曲部、
４ ａ、 ４ ｂｔ ５ ａｔ ５ ｂ”・
電極、１０−・・振動体、２０・・・フレーム、β０・
・・メツシュ。Fig. 1 is an external perspective view showing an example of a vibrating body conventionally used in a piezoelectric speaker, and Fig. 2 is a schematic diagram showing the structure of the vibrating body and the relationship between each electrode and the applied signal type and pressure. 3A and 3B are schematic diagrams showing the operation when the polarities of the signal voltages applied to each electrode of the vibrating body are different from each other, and FIG. 4 is a schematic diagram showing the air volume removal operation of the vibrating body. FIG. 4A is a schematic diagram showing the case where no signal voltage is applied to each electrode, and FIGS. 4B and 4C are schematic diagrams showing the case where signal voltages of mutually different polarities are applied to each electrode. FIG. 5 is an external perspective view showing an embodiment of a piezoelectric speaker according to the present invention in which a mesh is stretched from the frame over the entire vibrating body in the width direction, and FIG. 6 shows the embodiment shown in FIG. 5 and a conventional piezoelectric speaker. Frequency and sound pressure level in a piezoelectric speaker. Figures 7 to 9 show the frequency characteristics diagrams showing the relationship between the mesh and the mesh when the mesh is stretched only on the vibrating body without being stretched from the frame. Figure 8 shows that when the vibrator is stretched at both ends in the width direction,
The figure is an external perspective view showing a case in which the vibrator is stretched on both ends and the front and back sides of the vibrating body in the width direction. 1.2...Piezoelectric film, 3a, 3b...Bending portion,
4 a, 4 bt 5 at 5 b"・
Electrode, 10-... Vibrating body, 20... Frame, β0.
...Metsush.
Claims (1)
出方向が順次逆方向となるよ１うに連続的に折り返し、
少な（とも各折曲部の両面に信号電圧が印加される電極
を設けて成る振動体を備え、少なくともこの振動体の片
面にメツシュを張り各折曲部の山にこのメツシュを固定
したことを特徴とする圧電型スピーカ。Two polarized piezoelectric films are pasted together, and successively folded back so that the protruding directions are sequentially opposite directions.
A vibrating body is provided with electrodes to which a signal voltage is applied on both sides of each bent part, and a mesh is attached to at least one side of the vibrating body, and this mesh is fixed to the peak of each bent part. Features a piezoelectric speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP839084U JPS60121398U (en) | 1984-01-25 | 1984-01-25 | piezoelectric speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP839084U JPS60121398U (en) | 1984-01-25 | 1984-01-25 | piezoelectric speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60121398U true JPS60121398U (en) | 1985-08-16 |
Family
ID=30487625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP839084U Pending JPS60121398U (en) | 1984-01-25 | 1984-01-25 | piezoelectric speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60121398U (en) |
-
1984
- 1984-01-25 JP JP839084U patent/JPS60121398U/en active Pending
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