JPH03214678A - Piezoelectric vibration plate - Google Patents
Piezoelectric vibration plateInfo
- Publication number
- JPH03214678A JPH03214678A JP2009952A JP995290A JPH03214678A JP H03214678 A JPH03214678 A JP H03214678A JP 2009952 A JP2009952 A JP 2009952A JP 995290 A JP995290 A JP 995290A JP H03214678 A JPH03214678 A JP H03214678A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric ceramic
- quality
- piezoelectric
- metallic
- reliability
- 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
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 abstract description 9
- 230000001070 adhesive effect Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000006866 deterioration Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000001131 transforming effect Effects 0.000 abstract 1
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、圧電振動板に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to a piezoelectric diaphragm.
〈従来の技術及びその課題〉
従来から、圧電ブザーなどにおいては、第２図の外観斜
視図で示すような構成の圧電振動板１０が一般的に用い
られている。すなわち、この圧電振動板１０は、平面視
円形状とされた圧電性セラミック板１１と、これよりも
大径の平面視円形状とされた金属板１２とからなってお
り、これらの両者は接着剤１３によって貼り合わされて
いる。<Prior Art and its Problems> Conventionally, a piezoelectric diaphragm 10 having a configuration as shown in the external perspective view of FIG. 2 has been generally used in piezoelectric buzzers and the like. That is, this piezoelectric diaphragm 10 consists of a piezoelectric ceramic plate 11 that is circular in plan view and a metal plate 12 that is circular in plan view and has a larger diameter. They are bonded together by adhesive 13.
なお、この圧電性セラミック板１１の外側表面には、通
常、主電極や帰還電極が形成されており、その内側表面
には接着剤１３を介して金属板１２と対面する全面電極
が形成されている（いずれも図示していない）。Note that a main electrode and a return electrode are usually formed on the outer surface of the piezoelectric ceramic plate 11, and a full-surface electrode facing the metal plate 12 is formed on the inner surface of the piezoelectric ceramic plate 11 via an adhesive 13. (none shown).
ところで、この圧電振動板１０を製作するには、接着剤
ｌ３を塗布したのち、予め別部材として形成された圧電
性セラミック板１１と金属板１２とを互いに積み重ね、
さらに、これらを加圧して接着剤ｌ３を硬化させること
から、これらの接着工程では煩わしい手間を要し、かつ
、コストがかかることになって生産効率の向上が図れな
いという不都合が生じていた。また、使用条件によって
は、圧電性セラミック板１１と金属板１２とを接合した
接着剤１３が劣化して剥がれることもあり、製品に対す
る充分な信頼性が得られなくなる恐れもあった・
本発明はかかる従来の不都合に鑑みて創案されたもので
あって、生産効率及び製品に対する信転性の大幅な向上
を図ることができる圧電振動板を提供することを目的と
している。By the way, in order to manufacture this piezoelectric diaphragm 10, after applying the adhesive l3, the piezoelectric ceramic plate 11 and the metal plate 12, which were previously formed as separate members, are stacked on top of each other.
Furthermore, since these are pressurized to harden the adhesive 13, these bonding steps require troublesome labor and cost, resulting in an inconvenience in that production efficiency cannot be improved. Furthermore, depending on the usage conditions, the adhesive 13 that joins the piezoelectric ceramic plate 11 and the metal plate 12 may deteriorate and peel off, and there is a risk that sufficient reliability of the product may not be obtained. The present invention was devised in view of such conventional disadvantages, and an object of the present invention is to provide a piezoelectric diaphragm that can significantly improve production efficiency and product reliability.
〈課題を解決するための手段〉
本発明は、このような目的を達成するために、一面側が
圧電性セラミック質、他面側が金属質となっており、そ
の内部は一面側から他面側に向かうに連れて圧電性セラ
ミック質から金属質へと徐々に変質する素材からなるこ
とを特徴とするものである。<Means for Solving the Problems> In order to achieve the above object, the present invention has one side made of piezoelectric ceramic and the other side made of metal, and the inside of which is made of piezoelectric ceramic material and the other side is made of piezoelectric ceramic material. It is characterized by being made of a material that gradually changes in quality from piezoelectric ceramic to metal as it goes.
〈作用〉
上記構成によれば、圧電振動板となる素材が要求される
圧電性セラミック質と金属質との２つの性質を合わせ持
っていることから、従来例のように、互いに別部材とし
て形成された圧電性セラミック板と金属板とをわざわざ
接着剤で張り合わせることによって圧電振動板を構成す
る必要はなくなる。<Operation> According to the above configuration, since the material for the piezoelectric diaphragm has both the required properties of piezoelectric ceramic and metal, it is not possible to form them as separate members as in the conventional example. There is no need to construct a piezoelectric diaphragm by laminating the piezoelectric ceramic plate and metal plate together using an adhesive.
く実施例〉 以下、本発明の実施例を図面に基づいて説明する。Example Embodiments of the present invention will be described below based on the drawings.
第１図は本実施例に係る圧電振動板の外観形状＝３
を示す斜視図であり、この図における符号１は圧電振動
板である。FIG. 1 is a perspective view showing the external shape of the piezoelectric diaphragm according to this embodiment = 3, and the reference numeral 1 in this figure indicates the piezoelectric diaphragm.
この実施例に係る圧電振動板１は、平面視円形状の平板
とされた素材、すなわら、一面側１ａが圧電性セラミッ
ク質、他面側１ｂが金属質となっており、その内部が一
面側１ａから他面側１ｂに向かうに連れて圧電性セラミ
ック質から金属質へと徐々に変質する傾斜材料といわれ
る素材を用いることによって一体的に形成されている。The piezoelectric diaphragm 1 according to this embodiment is made of a flat plate having a circular shape in plan view, that is, one side 1a is made of piezoelectric ceramic, the other side 1b is made of metal, and the inside thereof is made of a piezoelectric ceramic material. It is integrally formed using a material called a graded material that gradually changes in quality from piezoelectric ceramic to metal as it goes from one side 1a to the other side 1b.
なお、ここで、傾斜材料とは、構成原子やその配列を変
化させることによって２つ以上の特性を合わせ持つよう
に構成された材料を意味している。Note that the term "graded material" as used herein means a material configured to have two or more properties by changing the constituent atoms or their arrangement.
〈発明の効果〉
以上説明したように、本発明によれば、接着剤を用いる
ことにより、互いに別部材として形成された圧電性セラ
ミック板と金属板とを張り合わせる必要がなくなる結果
、従来例では必要であった接着工程を省《ことができ、
これに要する手間及びコストを削減して生産効率の向上
を図ることができる。また、接着剤を用いないことから
、ごれ４
の劣化に伴う不都合が発生することはあり得す、製品に
対する信頼性の大幅な向上を容易に図ることができると
いう効果が得られる。<Effects of the Invention> As explained above, according to the present invention, by using an adhesive, it is no longer necessary to bond the piezoelectric ceramic plate and the metal plate, which are formed as separate members, to each other. The previously necessary gluing process can be omitted,
The effort and cost required for this can be reduced and production efficiency can be improved. Further, since no adhesive is used, there is no possibility of inconveniences caused by deterioration of the dirt 4, and the effect is that the reliability of the product can be easily greatly improved.
第１図は本発明の実施例に係る圧電振動板の外観形状を
示す斜視図であり、第２図は従来例に係る圧電振動板の
外観形状を示す斜視図である。
図における符号１は、圧電振動板である。FIG. 1 is a perspective view showing the external shape of a piezoelectric diaphragm according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the external shape of a piezoelectric diaphragm according to a conventional example. Reference numeral 1 in the figure is a piezoelectric diaphragm.
Claims (1)
なっており、その内部は一面側から他面側に向かうに連
れて圧電性セラミック質から金属質へと徐々に変質する
素材からなることを特徴とする圧電振動板。(1) One side is made of piezoelectric ceramic and the other side is made of metal, and the inside is made of a material that gradually changes from piezoelectric ceramic to metal as it goes from one side to the other side. A piezoelectric diaphragm characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009952A JPH03214678A (en) | 1990-01-18 | 1990-01-18 | Piezoelectric vibration plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009952A JPH03214678A (en) | 1990-01-18 | 1990-01-18 | Piezoelectric vibration plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03214678A true JPH03214678A (en) | 1991-09-19 |
Family
ID=11734304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009952A Pending JPH03214678A (en) | 1990-01-18 | 1990-01-18 | Piezoelectric vibration plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03214678A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996007207A1 (en) * | 1994-08-29 | 1996-03-07 | The Government Of The United States Of America, Represented By The Secretary Of The Navy | Unitary transducer with variable resistivity |
| US5519278A (en) * | 1994-12-23 | 1996-05-21 | The United States Of America As Represented By The Secretary Of The Navy | Actuators with graded activity |
| US6995501B2 (en) * | 2002-05-16 | 2006-02-07 | Olympus Corporation | Ultrasonic transducer and method of manufacturing the same |
-
1990
- 1990-01-18 JP JP2009952A patent/JPH03214678A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996007207A1 (en) * | 1994-08-29 | 1996-03-07 | The Government Of The United States Of America, Represented By The Secretary Of The Navy | Unitary transducer with variable resistivity |
| US5502345A (en) * | 1994-08-29 | 1996-03-26 | The United States Of America As Represented By The Secretary Of The Navy | Unitary transducer with variable resistivity |
| US5519278A (en) * | 1994-12-23 | 1996-05-21 | The United States Of America As Represented By The Secretary Of The Navy | Actuators with graded activity |
| US6995501B2 (en) * | 2002-05-16 | 2006-02-07 | Olympus Corporation | Ultrasonic transducer and method of manufacturing the same |
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