JPS6192099A - Manufacture of piezoelectric vibrator - Google Patents
Manufacture of piezoelectric vibratorInfo
- Publication number
- JPS6192099A JPS6192099A JP21392884A JP21392884A JPS6192099A JP S6192099 A JPS6192099 A JP S6192099A JP 21392884 A JP21392884 A JP 21392884A JP 21392884 A JP21392884 A JP 21392884A JP S6192099 A JPS6192099 A JP S6192099A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric body
- metal plate
- ceramic piezoelectric
- adhesive
- hard rubber
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000000853 adhesive Substances 0.000 claims abstract description 32
- 230000001070 adhesive effect Effects 0.000 claims abstract description 32
- 239000000919 ceramic Substances 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 6
- 229920001875 Ebonite Polymers 0.000 abstract description 17
- 239000000463 material Substances 0.000 description 8
- 229910001369 Brass Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は圧電ブザー等の電気音響変換器に使用する圧電
振動子の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a piezoelectric vibrator used in an electroacoustic transducer such as a piezoelectric buzzer.
従来例の構成とその問題点
圧電ブヂー等の電気音響変換器を構成する場合、重要な
のは圧電振動子の共振周波数である。圧電振動子の共振
周波数はセラミック圧電体、金属板夫々のヤング率、厚
さ、大きさ、ポアソン比、接１１層の厚さ、強度等によ
って決まる。又、圧電振動子の支持固定方法にも大きな
影響を受ける。Conventional configuration and its problems When constructing an electroacoustic transducer such as a piezoelectric buzzer, what is important is the resonant frequency of the piezoelectric vibrator. The resonant frequency of the piezoelectric vibrator is determined by the Young's modulus, thickness, size, Poisson's ratio, thickness, strength, etc. of the ceramic piezoelectric body and the metal plate, and the thickness and strength of the contact layer. Furthermore, the method of supporting and fixing the piezoelectric vibrator has a large influence.
従来、圧電ブザー等の音響発音体に用いる圧電振動子は
円板状のセラミック圧電体と同じく円板状の金属板とを
接着剤を用いて貼り合わせ、セラミック圧電体の径方向
への伸縮を圧電振動子の撓み振動に変えて音を発してい
る。セラミック圧電体と金属板は平板であり、接着治具
も平面で、常温にて接着層を薄くするように接着治具の
間に挾み、圧力を加えて接着剤を固化させている。圧電
振動子の共振周波数は圧電振動子の支持固定条件を同一
にすればセラミック圧電体及び金属板の材質、径、厚さ
によって変えることができるが、セラミック圧電体の場
合、材質を変えることは圧電性そのものに影響を与え容
易ではない。径、厚さについても焼結前の工程で変える
必要があるため、容易ではない。又、径、厚さを変える
と目的とする音圧が得られない等の問題もでてくる。金
属板についても同様のことが言える。圧ｍＷ動子に用い
る金属板は通常０．３ｕ＋以下の薄い板を使用するが、
ＪＩＳ規格外の組成、厚さの板を作ることは容易ではな
い。従って、従来の工法でセラミック圧電体と金属板を
接着したものにあっては完成した圧電振動子の共振周波
数は材質、径、−厚さの選択によって決まり、飛び飛び
の値を持つものしか得られない。共振周波数の僅かに異
なる圧電振動子を得るためにも異なる材質、径、厚さの
組合せを選ぶ必要があった。Conventionally, piezoelectric vibrators used in acoustic sounding bodies such as piezoelectric buzzers are made by bonding together a disk-shaped ceramic piezoelectric body and a disk-shaped metal plate using an adhesive to prevent the ceramic piezoelectric body from expanding and contracting in the radial direction. Sound is generated by converting the bending vibrations of a piezoelectric vibrator. The ceramic piezoelectric body and the metal plate are flat plates, and the adhesive jig is also flat. They are sandwiched between the adhesive jigs to thin the adhesive layer at room temperature, and pressure is applied to solidify the adhesive. The resonant frequency of a piezoelectric vibrator can be changed by changing the material, diameter, and thickness of the ceramic piezoelectric body and the metal plate if the supporting and fixing conditions of the piezoelectric vibrator are the same; however, in the case of a ceramic piezoelectric body, it is not possible to change the material. This is not easy as it affects the piezoelectricity itself. The diameter and thickness also need to be changed in the process before sintering, which is not easy. Furthermore, if the diameter and thickness are changed, problems such as not being able to obtain the desired sound pressure may arise. The same can be said about metal plates. The metal plate used for the pressure mW mover is usually a thin plate of 0.3u+ or less,
It is not easy to make a board with a composition and thickness that does not meet JIS standards. Therefore, in the case of bonding a ceramic piezoelectric body and a metal plate using conventional construction methods, the resonant frequency of the completed piezoelectric vibrator is determined by the selection of material, diameter, and thickness, and only those with discrete values can be obtained. do not have. In order to obtain piezoelectric vibrators with slightly different resonant frequencies, it was necessary to select different combinations of materials, diameters, and thicknesses.
発明の目的
本発明は上記従来の欠点を解消するもので、任意の共振
周波数を持つ圧電振動子を容易に作ることを目的とする
。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to easily produce a piezoelectric vibrator having an arbitrary resonance frequency.
発明の構成
上記目的を達成するため、本発明の圧電振動子のｙＪ造
六方法、セラミック圧電体と金属板を接着するに際し、
接着時にセラミック圧電体又は金属板又は両者に機械的
歪を加えて挟圧するものである。Structure of the Invention In order to achieve the above object, the piezoelectric vibrator of the present invention is manufactured using six methods, and when bonding a ceramic piezoelectric body and a metal plate,
At the time of bonding, mechanical strain is applied to the ceramic piezoelectric body, the metal plate, or both, and pressure is applied.
実施例の説明
以下、本発明の実施例について、図面に基づいて説明す
る。DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the drawings.
先ず、第１図に示す第１実施例について説明する。図に
おいて、１は接着治具の上側部分、２は接着治具上側部
分１の下面に取り付けられている硬質ゴム板、３はセラ
ミック圧電体で、両面には電極が形成されて分極されて
いる。４は接着剤、５は金属板で、この金属板５はドー
ム状に成形されている。６は接着治具の下側部分である
。接る治具上側部分１及び硬質ゴム板２９下面及び接着
治具下側部分６の上面は共に平面に形成されて、前記セ
ラミック圧電体３、接着剤４及び金属板５を平面で押え
る構造となっている。前記硬質ゴム板２を用いるのは接
着時の密着を良くするためであり、このゴムの硬度は６
０〜９０程度が良い。First, a first embodiment shown in FIG. 1 will be described. In the figure, 1 is the upper part of the adhesive jig, 2 is a hard rubber plate attached to the bottom surface of the upper part 1 of the adhesive jig, and 3 is a ceramic piezoelectric body, which is polarized with electrodes formed on both sides. . 4 is an adhesive, 5 is a metal plate, and this metal plate 5 is formed into a dome shape. 6 is the lower part of the adhesive jig. The upper surface of the jig upper portion 1 and the lower surface of the hard rubber plate 29 and the upper surface of the lower adhesive jig portion 6 that come into contact are both formed into flat surfaces, so that the ceramic piezoelectric body 3, the adhesive 4, and the metal plate 5 are held flat. It has become. The hard rubber plate 2 is used to improve adhesion during adhesion, and the hardness of this rubber is 6.
Approximately 0 to 90 is good.
例えば、セラミック圧電体３の厚さを０１１ｍｍ。For example, the thickness of the ceramic piezoelectric body 3 is 0.11 mm.
直径を２１ｍｍ、金属板５を黄銅とし、厚さを０．１１
ＩＩＪ直径を３０ｍｍのものを用い、ドームの張出しを
０．５＋ｎｍとしたとき、中心支持で測定した共振周波
数は約８００Ｈ２であった。同じセラミック圧電体と平
板状の金属板を上記１妄着治具で接着した圧電振動子の
中心支持の共振周波数は約７００Ｈｚである。The diameter is 21 mm, the metal plate 5 is made of brass, and the thickness is 0.11 mm.
When using an IIJ with a diameter of 30 mm and a dome overhang of 0.5+nm, the resonance frequency measured with central support was about 800H2. The resonant frequency of the center support of a piezoelectric vibrator made by bonding the same ceramic piezoelectric material and a flat metal plate using the above-mentioned 1st attachment jig is about 700 Hz.
次に第２図に示す第２実施例について説明する。Next, a second embodiment shown in FIG. 2 will be described.
図において、７は接ｎ治具の上側部分、８は接着治具下
側部分７の下面に取り付けられたＴｉｆ！質ゴム板ゴム
板。硬質ゴム板８の下面は逆ドーム状に形成されている
。ゴム硬度は６０〜９０程度である。９はセラミック圧
電体で、両面には電極が形成されて分極されている。１
０は接着剤、１１はドーム状に成形された金属板である
。１２は接着治具の下側部分で、上面はドーム状に形成
されており、ドームの形状は硬質ゴム板８下面の逆ドー
ムと同一で嵌合できるようになっている。又、前記硬質
ゴム板８の下面の逆ドーム及び接着治具下側部分１２の
上面のドームの半径を前記金属板１１のドームの半径よ
り大ぎくしである。In the figure, 7 is the upper part of the contact jig, and 8 is the Tif! attached to the lower surface of the lower part 7 of the adhesive jig. Quality rubber plate rubber plate. The lower surface of the hard rubber plate 8 is formed into an inverted dome shape. The rubber hardness is about 60 to 90. 9 is a ceramic piezoelectric material, and electrodes are formed on both surfaces to polarize the material. 1
0 is an adhesive, and 11 is a metal plate formed into a dome shape. Reference numeral 12 designates the lower part of the adhesive jig, and the upper surface thereof is formed into a dome shape, and the shape of the dome is the same as the inverted dome on the lower surface of the hard rubber plate 8, so that it can be fitted. Further, the radius of the inverted dome on the lower surface of the hard rubber plate 8 and the radius of the dome on the upper surface of the lower part 12 of the adhesive jig are slightly larger than the radius of the dome of the metal plate 11.
例えば、セラミック圧電体９の直径を２１ｍｍ、厚さｏ
、ｉ＋ｉｍ、金属板１１として黄銅の０．１ｍｍＱを用
い、直径３０Ｉｌ１ｍで、ドームの張出しを０．７ｍｍ
とする。硬質ゴム板８のへこみ、接着治具の下側部分１
２の張出しを直径３０ｍｍに換算したとき各々０．３ｍ
ｍとすると、セラミック圧電体９が接着された圧電振動
子の中心支持の共振周波数は約８７０Ｈ２となった。For example, the diameter of the ceramic piezoelectric body 9 is 21 mm, the thickness o
, i+im, 0.1 mm Q of brass is used as the metal plate 11, the diameter is 30 Il 1 m, and the overhang of the dome is 0.7 mm.
shall be. Dent in hard rubber plate 8, lower part 1 of adhesive jig
0.3m each when converting the overhang of 2 to a diameter of 30mm
m, the resonance frequency of the center support of the piezoelectric vibrator to which the ceramic piezoelectric body 9 was bonded was approximately 870H2.
次に第３図に示す第３実施例について説明する。Next, a third embodiment shown in FIG. 3 will be described.
図において、１３は接着治具の上側部分、１４は接着治
具の上側部分１３の下面に取り付けられた硬質ゴム板で
ある。硬質ゴム板１４の下面は逆ドーム状に形成されて
おり、硬度は６０〜９０程度である６１５はセラミック
圧電体で、両面には電極が形成されて分極されている。In the figure, 13 is the upper part of the adhesive jig, and 14 is a hard rubber plate attached to the lower surface of the upper part 13 of the adhesive jig. The lower surface of the hard rubber plate 14 is formed into an inverted dome shape, and 615 is a ceramic piezoelectric material having a hardness of about 60 to 90, and electrodes are formed on both surfaces to polarize it.
１６は接着剤、１１は平板状の金属板、１８は接着治具
の下側部分で、Ｅ面はドーム状に張り出しており、ドー
ムの形状は硬質ゴム板１４の下面の逆ドームと同一で嵌
合できるようになっている。16 is the adhesive, 11 is a flat metal plate, 18 is the lower part of the adhesive jig, and the E surface protrudes in a dome shape, and the shape of the dome is the same as the inverted dome on the lower surface of the hard rubber plate 14. It is now possible to mate.
例えば、セラミック圧電体１５の直径を２１ｍｍ１厚さ
０．１ｍｍ、金属板１７として黄銅の０．１ｍｍ厚さ、
直径３０！ｌＩｍで、硬質ゴム板１４のへこみ、接着治
具下側部分１８の張出しを０．５ｍｌ１としたとぎ、接
ｒｉ後の圧電振動子の中心支持時の共振周波数は約７５
０ＨＺであっＩこ。For example, the ceramic piezoelectric body 15 has a diameter of 21 mm and a thickness of 0.1 mm, and the metal plate 17 is made of brass with a thickness of 0.1 mm.
Diameter 30! When the indentation of the hard rubber plate 14 and the protrusion of the lower part 18 of the adhesive jig are set to 0.5ml1 in lIm, the resonant frequency when the center of the piezoelectric vibrator is supported after bonding is approximately 75.
It's 0Hz.
ところで第１実施例において金属板５に、第２実施例及
び第３実施例においてセラミック圧電体９．１５及び金
属板１１．１７に機械的歪を加えているが、セラミック
圧電体にのみ機械的歪を加えるようにしても良い。By the way, mechanical strain is applied to the metal plate 5 in the first embodiment, and to the ceramic piezoelectric body 9.15 and the metal plate 11.17 in the second and third examples, but mechanical strain is applied only to the ceramic piezoelectric body. You may also add distortion.
発明の効果
以上のように本発明によれば、セラミック圧電体又は金
属板に、又はその両者に機械的歪を加えて接着固定する
製造方法をとることにより、同じ部品構成で任意の共振
周波数を持つ圧電振動子を冑ることができる。Effects of the Invention As described above, according to the present invention, by applying mechanical strain to a ceramic piezoelectric body, a metal plate, or both, and then adhering and fixing them, a desired resonant frequency can be set with the same component configuration. You can remove the piezoelectric vibrator you hold.
第１図〜第３図は本発明の第１実施例〜第３実施例を示
す断面図である。
１・・・接着治具の上側部分、２・・・硬質ゴム板、３
・・・セラミック圧電体、４・・・接着剤、５・・・金
属板、６・・・接着治具の下側部分、７・・・接着治具
の上側部分、８・・・硬質ゴム板、９・・・セラミック
圧電体、１０・・・接着剤、１１・・・金属板、１２・
・・接着治具の下側部分、１３・・・接着治具の上側部
分、１４・・・硬質ゴム板、１５・・・セラミック圧電
体、１６・・・接着剤、１１・・・金属板、１８・・・
接着治具の下側部分1 to 3 are sectional views showing first to third embodiments of the present invention. 1... Upper part of adhesive jig, 2... Hard rubber plate, 3
...Ceramic piezoelectric body, 4...Adhesive, 5...Metal plate, 6...Lower part of adhesive jig, 7...Upper part of adhesive jig, 8...Hard rubber Plate, 9... Ceramic piezoelectric body, 10... Adhesive, 11... Metal plate, 12.
...Lower part of adhesive jig, 13... Upper part of adhesive jig, 14...Hard rubber plate, 15...Ceramic piezoelectric body, 16...Adhesive, 11...Metal plate , 18...
Lower part of adhesive jig
Claims (1)
時にセラミック圧電体又は金属板又は両者に機械的歪を
加えて挟圧する圧電振動子の製造方法。 ２、ドーム状に成形された金属板と平板状のセラミック
圧電体を前記金属板のドームの半径より大きい半径を有
する凹凸一対の接着治具で挾み接着固定する特許請求の
範囲第１項記載の圧電振動子の製造方法。 ３、平板状のセラミック圧電体と平板状の金属板を凸凹
一対の接着治具で挾み接着固定する特許請求の範囲第１
項記載の圧電振動子の製造方法。[Scope of Claims] 1. A method for manufacturing a piezoelectric vibrator, in which a ceramic piezoelectric body and a metal plate are bonded together by applying mechanical strain to the ceramic piezoelectric body, the metal plate, or both. 2. A dome-shaped metal plate and a flat ceramic piezoelectric body are sandwiched and adhesively fixed by a pair of adhesive jigs having concave and convex portions having a radius larger than the radius of the dome of the metal plate. A method for manufacturing a piezoelectric vibrator. 3. Claim 1, in which a flat ceramic piezoelectric body and a flat metal plate are sandwiched and adhesively fixed by a pair of concave and convex adhesive jigs.
A method for manufacturing a piezoelectric vibrator as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21392884A JPS6192099A (en) | 1984-10-11 | 1984-10-11 | Manufacture of piezoelectric vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21392884A JPS6192099A (en) | 1984-10-11 | 1984-10-11 | Manufacture of piezoelectric vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6192099A true JPS6192099A (en) | 1986-05-10 |
Family
ID=16647360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21392884A Pending JPS6192099A (en) | 1984-10-11 | 1984-10-11 | Manufacture of piezoelectric vibrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6192099A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011528546A (en) * | 2008-07-18 | 2011-11-17 | エージェンシー フォー ディフェンス デベロップメント | Electromechanical transducer and manufacturing method thereof |
-
1984
- 1984-10-11 JP JP21392884A patent/JPS6192099A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011528546A (en) * | 2008-07-18 | 2011-11-17 | エージェンシー フォー ディフェンス デベロップメント | Electromechanical transducer and manufacturing method thereof |
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