JPS632199B2 - - Google Patents
Info
- Publication number
- JPS632199B2 JPS632199B2 JP55188192A JP18819280A JPS632199B2 JP S632199 B2 JPS632199 B2 JP S632199B2 JP 55188192 A JP55188192 A JP 55188192A JP 18819280 A JP18819280 A JP 18819280A JP S632199 B2 JPS632199 B2 JP S632199B2
- Authority
- JP
- Japan
- Prior art keywords
- conductive elastic
- vibrating element
- elastic material
- vibrating
- wall
- 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
- 239000013013 elastic material Substances 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000005476 soldering Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
Description
【発明の詳細な説明】
本発明は超音波送受波器に関し、主に高周波に
使用される超音波送受波器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ultrasonic transducer and, more particularly, to an ultrasonic transducer used for high frequencies.
従来この種の主に高周波を使用する超音波送受
波器は、第１図に示す如く、外きよう５の一面に
多数の振動素子１を接着し、各振動素子１の両電
極８をそれぞれ電線６で結びケーブル７を通し交
流電圧を供給し、電歪効果により振動素子が交流
電圧に応じた振動をする。この振動が外きようを
通し送受波器の投入された媒体中に放射されてい
る。 Conventionally, this type of ultrasonic transducer mainly uses high frequencies, as shown in FIG. An alternating current voltage is supplied through a cable 7 connected by an electric wire 6, and the vibrating element vibrates in accordance with the alternating voltage due to the electrostrictive effect. This vibration is radiated through the outer shell into the medium into which the transducer is inserted.
一般に振動素子は、その材料の機械的性質に従
う共振周波数を持つており、この周波数で使用す
るのを常としている。しかしながら振動素子の寸
法は共振周波数に反比例して小さくなり、一例を
挙げると、周波数300kHzの電歪振動子では、振
動素子の長さは７〜８ｍ／ｍ、幅は１〜２／ｍ程
度となる。このような寸法で電線を振動素子に半
田付け等により取りつけることは機械的寸法の変
動に伴う共振周波数の変動をもたらし、総合的な
特性の変化を招くばかりか、この工法は相当の技
能を必要とし個人差の生ずる機会が多い欠点があ
つた。 Generally, a vibrating element has a resonant frequency according to the mechanical properties of its material, and is normally used at this frequency. However, the dimensions of the vibrating element decrease in inverse proportion to the resonant frequency; for example, in an electrostrictive vibrator with a frequency of 300 kHz, the length of the vibrating element is about 7 to 8 m/m, and the width is about 1 to 2 m. Become. Attaching wires with such dimensions to the vibrating element by soldering etc. will not only result in fluctuations in the resonant frequency due to changes in mechanical dimensions, resulting in changes in overall characteristics, but also requires considerable skill. However, the disadvantage was that there were many opportunities for individual differences to occur.
本発明は、２個の導電弾性材に振動素子を狭
み、前記導電弾性材を介して交流電圧で駆動せし
め、また受波電圧を取り出すことにより上記欠点
を解決した送受波器を提供するものである。 The present invention provides a transducer that solves the above-mentioned drawbacks by enclosing a vibrating element between two conductive elastic materials, driving it with an alternating current voltage through the conductive elastic materials, and extracting the received wave voltage. It is.
すなわち、本発明は比較的小さい振動素子を多
数個使用した超音波送受波器において、きよう体
内での各振動素子を接続するための電線の半田付
け等による接続にかえて振動素子に導電弾性材を
接触せしめ、外部からの電源の供給又は外部への
受波電圧の取出しを前記、導電弾性材を通して行
うものであり、従来の半田付けのように共振周波
数の変化をもたらし、多大の経験を必要とする工
法から開放されるものである。一方、振動素子か
ら発生した振動は、導電弾性材及びきよう体を通
じて、きよう体が没入されている媒体へ供給され
輻射されるものである。 That is, the present invention provides an ultrasonic transducer that uses a large number of relatively small vibrating elements, and instead of connecting each vibrating element within the body by soldering electric wires or the like, the vibrating element is made of conductive elastic material. This method involves bringing the materials into contact with each other and supplying power from the outside or extracting the received voltage to the outside through the conductive elastic material, which causes a change in the resonant frequency like conventional soldering, and requires a great deal of experience. This will free you from the necessary construction methods. On the other hand, vibrations generated from the vibrating element are supplied and radiated through the conductive elastic material and the wall to the medium in which the wall is immersed.
本発明による実施例について第２図を参照して
説明すると、複数の振動素子１と、この振動素子
に接する２個の導電弾性材２と、導電弾性材内の
電極３から引き出された電線６と、これらの構成
要素を収容する外きよう５とを含む。なお、８は
振動素子の電極であり、７は前記電線６から外き
よう５を貫通して外部と接続するケーブルであ
り、４は導電弾性材２のふくらみを防ぐ押え板で
ある。 An embodiment of the present invention will be described with reference to FIG. 2. A plurality of vibrating elements 1, two conductive elastic members 2 in contact with the vibrating elements, and electric wires 6 drawn out from electrodes 3 in the conductive elastic members and an outer enclosure 5 that accommodates these components. Note that 8 is an electrode of the vibrating element, 7 is a cable that passes from the electric wire 6 through the detachment 5 and is connected to the outside, and 4 is a presser plate that prevents the conductive elastic material 2 from bulging.
振動素子１は導電弾性材２と振動素子の電極８
を通じて結ばれ、更に導電弾性材２はケーブル７
と導電弾性材内の電極３及び電線６を通じて結ば
れ、複数の振動素子は並列に接続されてケーブル
７を端子として送受波器を構成する。一方、振動
素子の振動は、導電弾性材２及びきよう体５を通
じ、きよう体に接する媒体に輻射され、送受波器
の振動伝送系を構成している。 The vibrating element 1 includes a conductive elastic material 2 and an electrode 8 of the vibrating element.
The conductive elastic material 2 is connected through the cable 7.
The plurality of vibrating elements are connected in parallel and constitute a transducer using the cable 7 as a terminal. On the other hand, the vibration of the vibrating element is radiated through the conductive elastic material 2 and the wall 5 to a medium in contact with the wall, forming a vibration transmission system of the transducer.
かような方法で送受波器を構成したときは、従
来の実施例に示すように、振動素子１の電極８相
互間を接続する電線が不要となり、電線と電極と
を接続する半田付け等の工程を節約できるほか、
半田付けに伴う振動素子の共振周波数の変動を防
ぐ効果がある。また、複数個の振動素子の導電弾
性体上での相対的位置は任意に配列することがで
きるので、振動輻射時の指向特性を任意に迸び設
計する自由度を持つものである。 When the transducer is configured in this way, as shown in the conventional embodiment, the electric wires that connect the electrodes 8 of the vibrating element 1 are no longer required, and the process of soldering, etc., that connects the electric wires and the electrodes becomes unnecessary. In addition to saving the process,
This has the effect of preventing fluctuations in the resonant frequency of the vibrating element due to soldering. Further, since the relative positions of the plurality of vibration elements on the conductive elastic body can be arbitrarily arranged, there is a degree of freedom in designing the directivity characteristic during vibration radiation.
本発明は以上説明したように、少なくとも１個
の振動素子１と、振動素子１に接する導電弾性材
２と、導電弾性材２より引き出される電線６と、
これらを外きよう５に収容するように構成するこ
とにより、振動素子の共振周波数の変動を防ぎ、
振動素子相互間の接続作業工程を省略するほか振
動素子の配列を任意とすることができ自由な指向
特性を得る効果がある。 As explained above, the present invention includes at least one vibrating element 1, a conductive elastic material 2 in contact with the vibrating element 1, an electric wire 6 drawn out from the conductive elastic material 2,
By configuring these to be accommodated in the receptacle 5, fluctuations in the resonant frequency of the vibrating element are prevented,
In addition to omitting the process of connecting the vibrating elements to each other, the vibrating elements can be arranged arbitrarily, which has the effect of obtaining free directivity characteristics.
第１図は従来の超音波送受波器の簡略化断面
図、第２図は、本発明の一実施例の断面図を示す
図である。
１……振動素子、２……導電弾性材、３……電
極（導電弾性材）、４……押え板、５……外きよ
う、６……電線、７……ケーブル、８……電極
（振動素子）。
FIG. 1 is a simplified sectional view of a conventional ultrasonic transducer, and FIG. 2 is a sectional view of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Vibration element, 2... Conductive elastic material, 3... Electrode (conductive elastic material), 4... Holding plate, 5... Removal, 6... Electric wire, 7... Cable, 8... Electrode (vibration element).
Claims (1)
動素子の電極を有する両端に接する二面の導電弾
性材とが外きように収容され、前記導電弾性材よ
り引出された電線はケーブルを通じ外きようを貫
通して成ることを特徴とする超音波送受波器。1. A plurality of electrostrictive columnar vibrating elements and a conductive elastic material on two sides contacting both ends having electrodes of the vibrating element are removably housed, and the electric wire drawn out from the conductive elastic material is a cable. An ultrasonic transducer characterized in that the ultrasonic wave transmitter/receiver is formed by penetrating an outer wall through an outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18819280A JPS57113689A (en) | 1980-12-29 | 1980-12-29 | Ultrasonic wave transmitter-receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18819280A JPS57113689A (en) | 1980-12-29 | 1980-12-29 | Ultrasonic wave transmitter-receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57113689A JPS57113689A (en) | 1982-07-15 |
| JPS632199B2 true JPS632199B2 (en) | 1988-01-18 |
Family
ID=16219374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18819280A Granted JPS57113689A (en) | 1980-12-29 | 1980-12-29 | Ultrasonic wave transmitter-receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57113689A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6170013A (en) * | 1984-09-13 | 1986-04-10 | Nikkiso Co Ltd | Production of extra fine fiber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5219554U (en) * | 1975-07-30 | 1977-02-12 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5718775Y2 (en) * | 1977-01-25 | 1982-04-20 |
-
1980
- 1980-12-29 JP JP18819280A patent/JPS57113689A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5219554U (en) * | 1975-07-30 | 1977-02-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57113689A (en) | 1982-07-15 |
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