JPS6318399B2 - - Google Patents
Info
- Publication number
- JPS6318399B2 JPS6318399B2 JP54011202A JP1120279A JPS6318399B2 JP S6318399 B2 JPS6318399 B2 JP S6318399B2 JP 54011202 A JP54011202 A JP 54011202A JP 1120279 A JP1120279 A JP 1120279A JP S6318399 B2 JPS6318399 B2 JP S6318399B2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- electrode
- piezoelectric sheet
- electrodes
- counter electrodes
- 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
- 238000004804 winding Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
【発明の詳細な説明】
本発明は高分子圧電材料のシート又は圧電セラ
ミツク微粒子を高分子材料で結合した可撓性の圧
電シート（以下、圧電シートという）を２重以上
に積層した圧電振動子およびその製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a piezoelectric vibrator in which sheets of polymeric piezoelectric material or flexible piezoelectric sheets (hereinafter referred to as piezoelectric sheets) in which piezoelectric ceramic fine particles are bonded with polymeric material are laminated in two or more layers. and its manufacturing method.
従来この種の振動子は大きな電気的入出力を得
るため圧電シートを積層する構造が用いられてい
る。このような積層構造の振動子を得るために
は、例えば第１図Ａ，Ｂのように巻枠４の周囲に
表裏側に出力端子２′，３′が接続される各々電極
２，３を形成した圧電シート１を巻き付けた後、
両電極２′，３′の短絡を防止するため圧電シート
１をａ及びｂ位置で切断する工程が採られてい
た。 Conventionally, this type of vibrator has a structure in which piezoelectric sheets are laminated in order to obtain large electrical input and output. In order to obtain a vibrator with such a laminated structure, for example, as shown in FIGS. 1A and 1B, electrodes 2 and 3 are provided around the winding frame 4 to which output terminals 2' and 3' are connected on the front and back sides, respectively. After wrapping the formed piezoelectric sheet 1,
In order to prevent a short circuit between the electrodes 2' and 3', a step was taken in which the piezoelectric sheet 1 was cut at positions a and b.
しかしながら、圧電シートの厚さは通常10μm
〜30μm程度と薄いため、上記工程のうち圧電シ
ートの切断工程において、圧電シート１の表裏の
電極間が短絡される恐れがあると言う欠点があつ
た。 However, the thickness of piezoelectric sheet is usually 10μm
Since the piezoelectric sheet 1 is thin at about 30 μm, there is a drawback that there is a risk of short-circuiting between the front and back electrodes of the piezoelectric sheet 1 during the cutting process of the piezoelectric sheet in the above steps.
本発明は上記の如き、工事上の欠点を除き、か
つ自由に所望の厚みに積層することを可能にする
高分子圧電振動子およびその製造方法を提供する
ものである。 The present invention provides a polymer piezoelectric vibrator and a method for manufacturing the same, which eliminates the above-mentioned disadvantages in construction and allows lamination to be freely made to a desired thickness.
本発明は予め表裏に設けた正負の対電極を複数
対設けた長い圧電シートを所望の寸法の巻枠に２
重以上に巻付ける構造の振動子で、又、巻付けた
際、同一の対電極が２重になる部分が生じて短絡
されることのないように、巻枠の寸法と各電極の
長さ及び各電極間隔の寸法関係を考慮した工程を
備える圧電振動子の製造方法である。 In the present invention, a long piezoelectric sheet with a plurality of pairs of positive and negative counter electrodes provided on the front and back sides is placed on a winding frame of desired dimensions.
The transducer is structured to be wound more than 100 times thick, and the dimensions of the winding frame and the length of each electrode must be adjusted to prevent short-circuiting due to double portions of the same counter electrode when wound. and a method for manufacturing a piezoelectric vibrator, which includes a process that takes into consideration the dimensional relationship between electrode intervals.
次に本発明の実施例について図面を参照して説
明する。第２図Ａ，Ｂは本発明の基本となる圧電
シートの平面図と側面図である。１は圧電シー
ト、２及び３は圧電シートの表裏に設けた１対の
電極で、２−１と３−１、２−２と３−２、２−
３と３−３はそれぞれ第１の対電極、第２の対電
極、第３の対電極を示し、順次所要の対数だけ設
けたものである。ｌ１，ｌ２，ｌ３は電極の長さ
で、ｄ１，ｄ２，ｄ３は各対電極の間隔寸法であ
る。次に、この圧電シートを用いた振動子組立の
実施例について説明する。 Next, embodiments of the present invention will be described with reference to the drawings. FIGS. 2A and 2B are a plan view and a side view of a piezoelectric sheet that is the basis of the present invention. 1 is a piezoelectric sheet, 2 and 3 are a pair of electrodes provided on the front and back of the piezoelectric sheet, 2-1 and 3-1, 2-2 and 3-2, 2-
3 and 3-3 indicate a first counter electrode, a second counter electrode, and a third counter electrode, respectively, and the required number of pairs are provided in this order. l1, l2, and l3 are the lengths of the electrodes, and d1, d2, and d3 are the spacing dimensions of each counter electrode. Next, an example of a vibrator assembly using this piezoelectric sheet will be described.
第３図は円筒の巻枠４の上に２層に巻付けた例
の断面図である。a′，b′は電極のない部分の境界
線を示す。この場合の第１層目は第２図の第１の
電極に相当し、第２層目は第２図の第２の電極部
分に相当する。従つてｌ１とｌ２及びｄ１とｄ２
の寸法は圧電シートの厚みによる円周の変化分の
み異つている。いま、この寸法の変化について考
えると、圧電シートの厚みは非常に薄く、かつ各
電極間隔は電極部の寸法に比べ小さいので、ｌ１
＝ｌ２＝ｌ３……，ｄ１＝ｄ２＝ｄ３……と同一
寸法にしても電極のない部分との境界線a′，b′が
僅か乱れるけれども、実用上の性能的な影響は無
視することができるのが普通である。このように
電極を等寸法、等間隔とすることにより非常に量
産性に富んだ高分子圧電振動子を製作することが
できる。 FIG. 3 is a sectional view of an example in which the wire is wound in two layers on a cylindrical winding frame 4. a' and b' indicate the boundaries of the part without electrodes. In this case, the first layer corresponds to the first electrode in FIG. 2, and the second layer corresponds to the second electrode portion in FIG. 2. Therefore l1 and l2 and d1 and d2
The dimensions differ only by the change in circumference due to the thickness of the piezoelectric sheet. Now, if we think about this change in dimension, the thickness of the piezoelectric sheet is very thin, and the distance between each electrode is small compared to the dimension of the electrode part, so l1
= l2 = l3..., d1 = d2 = d3... Even if the dimensions are the same, the boundaries a' and b' with the part without electrodes will be slightly disturbed, but the effect on practical performance can be ignored. It is normal to be able to do so. By making the electrodes equal in size and at regular intervals in this way, it is possible to manufacture a polymer piezoelectric vibrator that is highly suitable for mass production.
次に更に生産性を主眼に発展させた第２の実施
例について第４図により説明する。この実施例は
辺の長さｌ１，ｌ２，ｌ３……を同一第目の電極
が２層以上にならないよう巻枠４の外周より僅か
短く、等しい寸法とし、また、各電極との間隔ｄ
１，ｄ２，ｄ３……は各隣接層の円周の差以上の
寸法から構成したものである。このような寸法関
係にすることにより巻き方により正負の電極間が
短絡される恐れもなく、かつ圧電シートの電極寸
法も同一のパターンで製作することができる生産
性の高いものとなる。 Next, a second embodiment further developed with a focus on productivity will be described with reference to FIG. In this embodiment, the lengths l1, l2, l3... of the sides are slightly shorter and equal than the outer circumference of the winding frame 4 so that the same number of electrodes does not become two or more layers, and the distance d between each electrode is
1, d2, d3, . . . are constructed from dimensions that are greater than or equal to the difference in circumference between adjacent layers. With such a dimensional relationship, there is no fear that the positive and negative electrodes will be short-circuited due to the winding method, and the electrode dimensions of the piezoelectric sheet can be manufactured in the same pattern, resulting in high productivity.
次に第３の実施例について第５図により説明す
る。この例は平板の巻枠を用い、電極が平面部分
に、各電極間隔が湾曲部分に位置するように巻い
たもので、積層した状態では平板状の圧電振動子
が形成されるようにしたものである。 Next, a third embodiment will be explained with reference to FIG. This example uses a flat winding frame and winds it so that the electrodes are on the flat part and the intervals between the electrodes are on the curved part, so that when stacked, a flat piezoelectric vibrator is formed. It is.
なお、これまでの説明における巻枠は音響的に
邪魔になるときは圧電シートを積層成形した後除
けばよい。 Incidentally, if the winding frame described above becomes an acoustic hindrance, it can be removed after the piezoelectric sheets are laminated and molded.
以上の如く、本発明によれば多層した状態で最
外周と最内周の電極からリード線を取出すだけ
で、切断工程なしに振動子が形成され、任意の厚
みの振動子を容易に製作することができる。 As described above, according to the present invention, a vibrator can be formed without a cutting process by simply taking out the lead wires from the outermost and innermost electrodes in a multilayered state, and a vibrator with any thickness can be easily produced. be able to.
第１図Ａ，Ｂは従来の製造方法の各工程の態様
図、第２図Ａ及びＢは本発明に使用する圧電シー
トの平面図及び側面図、第３図及び第４図は本発
明の実施例による円筒型振動子の断面図、第５図
は本発明の他の実施例による振動子の断面図であ
る。
１……圧電シート、２，３……正負の電極、２
−１，３−１……第１番目の対電極、２−２，３
−２……第２番目の対電極、２−３，３−３……
第３番目の対電極、２′，３′……出力端子、４…
…巻枠。
1A and 1B are mode diagrams of each step of the conventional manufacturing method, 2A and 2B are plan and side views of the piezoelectric sheet used in the present invention, and 3 and 4 are diagrams of the piezoelectric sheet used in the present invention. FIG. 5 is a sectional view of a cylindrical vibrator according to another embodiment of the present invention. 1... Piezoelectric sheet, 2, 3... Positive and negative electrodes, 2
-1,3-1...first counter electrode, 2-2,3
-2... Second counter electrode, 2-3, 3-3...
Third counter electrode, 2', 3'...output terminal, 4...
...Reel frame.
Claims (1)
設けた部材が、少なくとも一部分が各層間それぞ
れ密着するように２層以上に巻き付けられ、且つ
前記巻き付けの略同一径方向の前記電極部のみが
除去されて成ることを特徴とする圧電振動子。 ２ 圧電振動子の表裏にそれぞれ正負の対電極を
複数対設け、この圧電シートを２層以上に巻き付
ける工程を備え、前記各電極の長さは前記巻付け
の際同一番目の対電極が２層以上に重ならない寸
法とし、且つ隣りの対電極との間隔は隣接する一
方の層の電極がもう一方の層の対電極間隔を短絡
させない寸法としたことを特徴とする圧電振動子
の製造方法。[Scope of Claims] 1 A member having positive and negative counter electrodes provided on the front and back sides of a piezoelectric sheet is wound in two or more layers so that at least a portion of each layer is in close contact with each other, and A piezoelectric vibrator characterized in that only an electrode part is removed. 2. A plurality of pairs of positive and negative counter electrodes are provided on the front and back sides of the piezoelectric vibrator, respectively, and the piezoelectric sheet is wound in two or more layers, and the length of each electrode is set so that the same number of counter electrodes are formed in two layers during the winding. A method for manufacturing a piezoelectric vibrator, characterized in that the dimensions are such that they do not overlap, and the distance between adjacent counter electrodes is such that the electrode of one adjacent layer does not short-circuit the distance between the counter electrodes of the other layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1120279A JPS55104678A (en) | 1979-02-02 | 1979-02-02 | Piezooelectric trembler and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1120279A JPS55104678A (en) | 1979-02-02 | 1979-02-02 | Piezooelectric trembler and its preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55104678A JPS55104678A (en) | 1980-08-11 |
| JPS6318399B2 true JPS6318399B2 (en) | 1988-04-18 |
Family
ID=11771434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1120279A Granted JPS55104678A (en) | 1979-02-02 | 1979-02-02 | Piezooelectric trembler and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55104678A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943356A (en) * | 1982-09-06 | 1984-03-10 | Kureha Chem Ind Co Ltd | Ultrasonic probe |
| US4964302A (en) * | 1984-09-25 | 1990-10-23 | Grahn Allen R | Tactile sensor |
| US11021312B2 (en) | 2018-12-21 | 2021-06-01 | Altria Client Services Llc | Pouch with oxygen scavenger and method of forming pouch with oxygen scavenger |
-
1979
- 1979-02-02 JP JP1120279A patent/JPS55104678A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55104678A (en) | 1980-08-11 |
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