JPS633279Y2 - - Google Patents
Info
- Publication number
- JPS633279Y2 JPS633279Y2 JP3977482U JP3977482U JPS633279Y2 JP S633279 Y2 JPS633279 Y2 JP S633279Y2 JP 3977482 U JP3977482 U JP 3977482U JP 3977482 U JP3977482 U JP 3977482U JP S633279 Y2 JPS633279 Y2 JP S633279Y2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric ceramic
- diaphragm
- lead wire
- present
- small hole
- 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.)
- Expired
Links
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は、圧電スピーカ用エレメント等に適用
して好適なバイモルフ振動子のリード線取付け構
造に関する。[Detailed Description of the Invention] The present invention relates to a lead wire attachment structure for a bimorph vibrator that is suitable for application to piezoelectric speaker elements and the like.
従来、この種の圧電スピーカ用バイモルフ素子
のリード線は、第１図に示す如く、金属振動板２
を圧電磁器板１，１′でサンドイツチ状に接着し
て構成されている。そして金属板２に突起状端子
２ａを延長形成し、この端子２ａから一方のリー
ド線３′を取り出す構造となつている。そのため
金属板２の形状が複雑となり、突起状端子２ａの
存在のために組立接着の作業が面倒になる欠点が
ある。またエレメントの対称性を欠くために、音
圧の平担性が得られ難いという欠点もある。 Conventionally, lead wires of this type of bimorph element for piezoelectric speakers are connected to a metal diaphragm 2 as shown in FIG.
It is constructed by bonding piezoelectric ceramic plates 1 and 1' in a sandwich pattern. A projecting terminal 2a is formed as an extension on the metal plate 2, and one lead wire 3' is taken out from the terminal 2a. Therefore, the shape of the metal plate 2 becomes complicated, and the presence of the protruding terminals 2a makes assembly and bonding work troublesome. Another drawback is that it is difficult to obtain flat sound pressure due to the lack of symmetry of the elements.
本考案はかかる点に鑑み、組立工数を低減する
と共に音圧特性を改善するようにしたこの種振動
子を提案することを主たる目的とする。 In view of these points, the main purpose of the present invention is to propose a vibrator of this type that reduces assembly man-hours and improves sound pressure characteristics.
以下本考案の一実施例について図面を参照しな
がら詳細に説明する。 An embodiment of the present invention will be described in detail below with reference to the drawings.
第２図Ａ，Ｂは本来の一例を示す平面図及び側
断面図である。１，１′は圧電磁器素子を示し、
圧電磁器素子と同径の金属振動板２が中間に挟持
接着されている。尚、４は駆動したときの振動モ
ードのノード（節）の位置を示す。そして圧電磁
器素子の一方の素子１′のノードに対応する位置
に小孔５を穿設し、小孔５を通してリード線３′
を振動板２に接着される。このため、リード線の
接着が行われていても振動子の自由振動を妨げな
くなる。他方のリード線３は素子１のノードに対
応する位置に接着される。 FIGS. 2A and 2B are a plan view and a side sectional view showing an original example. 1 and 1' indicate piezoelectric ceramic elements,
A metal diaphragm 2 having the same diameter as the piezoelectric ceramic element is sandwiched and bonded in the middle. Note that 4 indicates the position of the node of the vibration mode when driven. Then, a small hole 5 is bored at a position corresponding to the node of one element 1' of the piezoelectric ceramic element, and a lead wire 3' is passed through the small hole 5.
is glued to the diaphragm 2. Therefore, even if the lead wires are bonded, the free vibration of the vibrator will not be hindered. The other lead wire 3 is bonded to the element 1 at a position corresponding to a node.
第３図は本考案の他の例を示す図である。本例
においては、リード線の接着位置を、第２図例に
示す如き基本波モードの節の位置のみならず、高
次モードで振動するときのノード位置に対応する
箇所に小孔５を穿設し、小孔５を通してリード線
３′を振動板２に接着したものである。その他の
構成は第２図例とほぼ同様である。 FIG. 3 is a diagram showing another example of the present invention. In this example, the bonding position of the lead wire is determined by drilling small holes 5 not only at the node positions of the fundamental wave mode as shown in the example in FIG. A lead wire 3' is attached to the diaphragm 2 through a small hole 5. The other configurations are almost the same as the example shown in FIG.
以上述べた如く本考案によれば、圧電磁器板の
一方の板の振動ノード位置に小孔を穿設し、上記
振動板からリード線を取り出すようにしたので、
従来のものに較べてエレメントの対称性が向上
し、第４図に示す如く、音圧特性も特に高音域で
の平担性が改良されている。尚、図中、実線は本
案の構成による曲線、破線は従来例の構成による
曲線である。また本考案によれば、振動板の形状
が単純化されているため、接着工程を簡素化する
ことができ、歩留まりも向上する。更に、リード
線の取り出し位置を振動子の同一面からにするこ
とができ、スピーカとして構成する際、スピーカ
ハウジングの構成も簡単化され、よつて大幅なコ
スト低減が可能となる。 As described above, according to the present invention, a small hole is formed at the vibration node position of one of the piezoelectric ceramic plates, and the lead wire is taken out from the diaphragm.
The symmetry of the elements is improved compared to the conventional one, and as shown in FIG. 4, the sound pressure characteristics are also improved, particularly in the flatness in the high frequency range. In the figure, the solid line is a curve according to the configuration of the present invention, and the broken line is a curve according to the configuration of the conventional example. Further, according to the present invention, since the shape of the diaphragm is simplified, the bonding process can be simplified and the yield rate can also be improved. Furthermore, the lead wires can be taken out from the same surface of the vibrator, and when configured as a speaker, the structure of the speaker housing can be simplified, thereby making it possible to significantly reduce costs.
第１図Ａ，Ｂは従来の振動子の例を示す平面図
及び側面図、第２図Ａ，Ｂは本案の一例を示す平
面図及び断面図、第３図は本案の他の例を示す
図、第４図は本案の効果の説明に供する音圧特性
曲線図である。
１，１′……圧電磁器素子、２……金属振動板、
３，３′……リード線、４……ノード、５……小
孔。
Figures 1A and B are a plan view and a side view of an example of a conventional vibrator, Figures 2A and B are a plan view and a sectional view of an example of the present invention, and Figure 3 is another example of the present invention. 4 are sound pressure characteristic curve diagrams for explaining the effects of the present invention. 1, 1'...piezoelectric ceramic element, 2...metal diaphragm,
3, 3'... Lead wire, 4... Node, 5... Small hole.
Claims (1)
したバイモルフ振動子において、上記圧電磁器板
の一方の板の振動ノード位置に小孔を穿設し、上
記振動板からリード線を取出したことを特徴とす
るバイモルフ振動子。 In a bimorph vibrator in which piezoelectric ceramic plates of the same shape are bonded to both sides of a metal diaphragm, a small hole is bored at the vibration node position of one of the piezoelectric ceramic plates, and a lead wire is taken out from the diaphragm. A bimorph oscillator characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3977482U JPS58145000U (en) | 1982-03-20 | 1982-03-20 | bimorph resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3977482U JPS58145000U (en) | 1982-03-20 | 1982-03-20 | bimorph resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58145000U JPS58145000U (en) | 1983-09-29 |
| JPS633279Y2 true JPS633279Y2 (en) | 1988-01-27 |
Family
ID=30051050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3977482U Granted JPS58145000U (en) | 1982-03-20 | 1982-03-20 | bimorph resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58145000U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6145675B2 (en) * | 2013-03-27 | 2017-06-14 | パナソニックＩｐマネジメント株式会社 | Piezoelectric speaker |
-
1982
- 1982-03-20 JP JP3977482U patent/JPS58145000U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58145000U (en) | 1983-09-29 |
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