JPS5831159B2 - Ultrasonic transducer device - Google Patents
Ultrasonic transducer deviceInfo
- Publication number
- JPS5831159B2 JPS5831159B2 JP12090978A JP12090978A JPS5831159B2 JP S5831159 B2 JPS5831159 B2 JP S5831159B2 JP 12090978 A JP12090978 A JP 12090978A JP 12090978 A JP12090978 A JP 12090978A JP S5831159 B2 JPS5831159 B2 JP S5831159B2
- Authority
- JP
- Japan
- Prior art keywords
- resonator
- piezoelectric element
- ultrasonic transducer
- transducer device
- base
- 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
- 239000000835 fiber Substances 0.000 claims description 6
- 210000004209 hair Anatomy 0.000 claims description 5
- 239000000463 material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035945 sensitivity Effects 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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Transducers For Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】
本発明はセラミックマイクロホンなどの所謂超音波振動
子装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a so-called ultrasonic transducer device such as a ceramic microphone.
この種超音波振動子は入力端子に電気信号を加えて圧電
素子及び共振子を振動させている。This type of ultrasonic vibrator applies an electric signal to an input terminal to vibrate a piezoelectric element and a resonator.
しかしてこれら圧電素子及び共振子の振動は両端子に加
わる電気信号をとり去っても更に持続する。Therefore, the vibrations of the piezoelectric element and the resonator continue even after the electric signal applied to both terminals is removed.
これを残響としい種々原因がある。There are various reasons why this is called reverberation.
この残響が長く続いた場合、反射式超音波スイッチを１
個の超音波振動子で送波と受波の両方の働きをさせよう
とすると受波には電気信号が入り続けるために受波のゲ
ートを開くことが遅れ、従って近くからの反射体に対し
超音波スイッチは動作しないことになる。If this reverberation continues for a long time, turn off the reflective ultrasonic switch.
When an ultrasonic transducer is used to transmit and receive waves, the opening of the reception gate is delayed because electrical signals continue to enter the receiving wave, resulting in a delay in opening the reception gate. The ultrasonic switch will not work.
ゆえにこの残響時間を短かくシ、受波のゲート時間を早
く開くことから近くの反射体に対しても動作させること
が必要である。Therefore, it is necessary to shorten this reverberation time and open the receiving gate time quickly, so that it also operates on nearby reflectors.
本発明は上記の様な点に鑑みて戒したものであって、即
ち内周に圧電素子及び共振子を拘繞する繊維毛を有する
筒体で圧電素子及び共振子を囲んだものであって、これ
により圧電素子及び共振子を柔らかく、而も確実に抱持
し、クッション材自体の荷重が圧電素子及び共振子に加
わることからの振動による残響の原因を取り除くことを
目的としたものである。The present invention has been made in view of the above points, and is a method in which a piezoelectric element and a resonator are surrounded by a cylinder having fiber hairs surrounding the piezoelectric element and the resonator on the inner periphery. This is intended to hold the piezoelectric element and resonator in a soft yet secure manner, and to eliminate the cause of reverberation caused by vibrations caused by the load of the cushioning material itself being applied to the piezoelectric element and resonator. .
以下本発明を一実施例として掲げた図面に基づいて説明
すると、Ｘは振動子本体であって、入力端子１を一側面
より突出したベース２と、このベース２の他側面に装着
された圧電素子３及び共振子４とよりなっている。Below, the present invention will be explained based on the drawings showing one embodiment of the present invention. It consists of an element 3 and a resonator 4.
５は圧電素子３及び共振子４を囲む筒体で、内周に繊維
毛６を有する。A cylindrical body 5 surrounds the piezoelectric element 3 and the resonator 4, and has fiber bristles 6 on the inner periphery.
この繊維毛６が圧電素子３及び共振子４を拘繞するが、
それは柔らかく包まれる。This fiber hair 6 constrains the piezoelectric element 3 and the resonator 4,
It's soft and wrapped.
而してこの筒体５はベース２に接着剤などで固定される
。This cylindrical body 5 is then fixed to the base 2 with an adhesive or the like.
７は筒体５の外側に位置するケースである。7 is a case located outside the cylindrical body 5.
本発明は上記の如く内周に圧電素子３及び共振子４を拘
繞する繊維毛６を有する筒体５で圧電素子３及び共振子
４を囲んだから、圧電素子３及び共振子４を柔らかく而
も確実に包み込め、クッション材自体の荷重が加わらず
、振動による残響の原因を取り除け、もって振動子の感
度を下げることなく残響を少くできる効果がある。In the present invention, as described above, the piezoelectric element 3 and the resonator 4 are surrounded by the cylindrical body 5 having fiber hairs 6 that bind the piezoelectric element 3 and the resonator 4 on the inner periphery. The material can be wrapped securely, no load is added to the cushioning material itself, and the cause of reverberation due to vibration can be removed, which has the effect of reducing reverberation without lowering the sensitivity of the vibrator.
図面は本発明超音波振動子装置の一実施例を示し、第１
図は断面図、第２図は斜面図である。
Ｘ・・・・・・振動子本体、１・・・・・・端子、２・
・・・・・ベース、３・・・・・・圧電素子、４・・・
・・・共振子、５・・・・・・筒体、６・・・・・・繊
維毛。The drawings show one embodiment of the ultrasonic transducer device of the present invention.
The figure is a sectional view, and FIG. 2 is a slope view. X: Vibrator body, 1: Terminal, 2:
...Base, 3...Piezoelectric element, 4...
... Resonator, 5 ... Cylinder, 6 ... Fiber hair.
Claims (1)
他側面に装着された圧電素子及び共振子とで振動子本体
を構成し、内局に前記圧電素子及び共振子を拘繞する繊
維毛を有するし、而もベースに固定された筒体で前記圧
電素子及び共振子を囲んだことを特徴とした超音波振動
子装置。1. A vibrator body is composed of a base with an input terminal on one side, a piezoelectric element and a resonator attached to the other side of the base, and fiber hairs that restrain the piezoelectric element and the resonator in the inner part. An ultrasonic transducer device comprising: a cylindrical body fixed to a base surrounding the piezoelectric element and the resonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12090978A JPS5831159B2 (en) | 1978-09-29 | 1978-09-29 | Ultrasonic transducer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12090978A JPS5831159B2 (en) | 1978-09-29 | 1978-09-29 | Ultrasonic transducer device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5546682A JPS5546682A (en) | 1980-04-01 |
| JPS5831159B2 true JPS5831159B2 (en) | 1983-07-04 |
Family
ID=14797992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12090978A Expired JPS5831159B2 (en) | 1978-09-29 | 1978-09-29 | Ultrasonic transducer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5831159B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63163475U (en) * | 1987-04-15 | 1988-10-25 | ||
| JP2007104761A (en) * | 2005-09-30 | 2007-04-19 | Fujinon Corp | Actuator |
| JP5119105B2 (en) * | 2008-09-18 | 2013-01-16 | パナソニック株式会社 | Protective housing and ultrasonic sensor for open-type ultrasonic transmission / reception unit |
-
1978
- 1978-09-29 JP JP12090978A patent/JPS5831159B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5546682A (en) | 1980-04-01 |
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