JPS6155839B2 - - Google Patents
Info
- Publication number
- JPS6155839B2 JPS6155839B2 JP13127277A JP13127277A JPS6155839B2 JP S6155839 B2 JPS6155839 B2 JP S6155839B2 JP 13127277 A JP13127277 A JP 13127277A JP 13127277 A JP13127277 A JP 13127277A JP S6155839 B2 JPS6155839 B2 JP S6155839B2
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- plate
- case
- electrodes
- pair
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Transducers For Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】
従来の超音波発生器は、第１図の如く、圧電気
結晶片に一対の電極を適当に装着してなる超音波
振動子１をケース２内にスポンジその他の緩衝材
３を介して配設して前記一対の電極をケース２に
装着する端子４，４′に可撓リード線にて接続
し、超音波振動子１に貫通固定する軸５に円錘皿
状の共振板６の頂部を貫通固定し、共振板６の内
面をケース２の保護網を張架した開口部８に対向
してなる。DETAILED DESCRIPTION OF THE INVENTION As shown in FIG. 1, a conventional ultrasonic generator includes an ultrasonic vibrator 1 consisting of a piezoelectric crystal piece with a pair of electrodes appropriately attached thereto, and an ultrasonic vibrator 1 placed inside a case 2 with a cushioning material such as a sponge. The pair of electrodes are arranged through a material 3 and connected to terminals 4 and 4' attached to the case 2 with flexible lead wires, and a conical dish shape is attached to a shaft 5 which is fixed through the ultrasonic transducer 1. The top of the resonant plate 6 is fixed through the resonant plate 6, and the inner surface of the resonant plate 6 is opposed to the opening 8 in which the protective net of the case 2 is stretched.
ところが、超音波振動子の一対の電極間に所定
周波の電圧を間欠的に印加し、超音波を間欠的に
発射するとき、一対の電極間の印加電圧の遮断後
においても、共振板６が残響し、上記印加電圧の
遮断後速かに超音波を停止できず、また短い間隔
で超音波を間欠的に発射できない欠点があつた。 However, when a voltage of a predetermined frequency is intermittently applied between a pair of electrodes of an ultrasonic transducer and ultrasonic waves are intermittently emitted, the resonant plate 6 remains unchanged even after the applied voltage between the pair of electrodes is cut off. There were drawbacks such as reverberation, the inability to stop the ultrasonic waves quickly after the applied voltage was cut off, and the inability to emit the ultrasonic waves intermittently at short intervals.
本発明は上記のような従来の欠点を除去するも
のであつて、以下本発明の実施例を第２図及び第
３図について説明すると（尚、本発明実施例にお
いて従来例と同一部品には同一符号を用いる。）
と、１は圧電気結晶片に一対の電極を装着してな
る超音波振動子、２はケースで、前記超音波振動
子１は緩衝材３を介して上記ケース２内に配設さ
れる。緩衝材はスポンジ、或は、繊維をからめて
なる綿である。４，４′はケース２に装着する端
子で、これら端子に前記一対の電極がそれぞれ可
撓リード線にて接続される。６は円錘皿状の共振
板で、その頂部は超音波振動子１に貫通固定する
軸５に貫通固定される。又、共振板６は軸５を用
いることなく超音波振動子１に直接その頂部が接
着固定されてもよい。 The present invention eliminates the above-mentioned drawbacks of the conventional technology, and an embodiment of the present invention will be explained below with reference to FIGS. (Use the same code.)
1 is an ultrasonic transducer formed by attaching a pair of electrodes to a piece of piezoelectric crystal; 2 is a case; the ultrasonic transducer 1 is disposed within the case 2 with a cushioning material 3 interposed therebetween. The cushioning material is sponge or cotton made of intertwined fibers. Terminals 4 and 4' are attached to the case 2, and the pair of electrodes are connected to these terminals by respective flexible lead wires. Reference numeral 6 denotes a conical dish-shaped resonance plate, the top of which is fixed to a shaft 5 which is fixed to the ultrasonic transducer 1 through the shaft. Further, the top of the resonant plate 6 may be directly adhesively fixed to the ultrasonic transducer 1 without using the shaft 5.
しかして、共振板６の板面の全部又は一部に可
撓性膜９が付着される。可撓性膜９は接着チー
プ、ゴム膜、合成樹脂膜よりなる。８は共振板６
の内面に対向するようケース２に形成する開口部
で、上記開口部には保護網７が張架されるもので
ある。 Thus, the flexible film 9 is attached to all or part of the plate surface of the resonant plate 6. The flexible membrane 9 is made of an adhesive chip, a rubber membrane, and a synthetic resin membrane. 8 is the resonance plate 6
An opening is formed in the case 2 so as to face the inner surface of the case 2, and a protective net 7 is stretched over the opening.
本発明は上記のような構成で、超音波振動子１
の一対の電極に所定周波の電圧を間欠的に印加し
て超音波を間欠的に発射するとき、上記一対の電
極間の印加電圧の遮断後、共振板６の振動は可撓
性膜９により速かに減少し、上記印加電圧の遮断
後速かに超音波を停止できるものである。 The present invention has the above-described configuration, and the ultrasonic transducer 1
When a voltage of a predetermined frequency is intermittently applied to a pair of electrodes to emit ultrasonic waves intermittently, after the voltage applied between the pair of electrodes is cut off, the vibration of the resonance plate 6 is caused by the flexible membrane 9. The voltage decreases quickly, and the ultrasonic waves can be stopped quickly after the applied voltage is cut off.
かように本発明は、超音波振動子に共振板を装
着してなる超音波発生器において、共振板の板面
の全部又は一部に可撓性膜を付着してなるもので
あるから、超音波振動子に供給する印加電圧の遮
断後、共振板の振動は可撓性膜の存在により速や
かに減少して超音波を速かに停止でき、超音波を
短い間隔で間欠的に発射できる効果がある。 Thus, the present invention provides an ultrasonic generator in which a resonant plate is attached to an ultrasonic vibrator, in which a flexible film is attached to all or part of the plate surface of the resonant plate. After the applied voltage supplied to the ultrasonic transducer is cut off, the vibration of the resonant plate is quickly reduced due to the presence of the flexible membrane, and the ultrasonic waves can be stopped quickly, allowing the ultrasonic waves to be emitted intermittently at short intervals. effective.
第１図は従来の超音波発生器の断面図、第２図
及び第３図は本発明の実施例を示すもので、第２
図は断面図、第３図は共振板の斜視図である。
１は超音波振動子、２はケース、３は緩衝材、
４，４′は端子、５は軸、６は共振板、７は開口
部、８は保護網、９は可撓性膜である。
FIG. 1 is a sectional view of a conventional ultrasonic generator, and FIGS. 2 and 3 show embodiments of the present invention.
The figure is a sectional view, and FIG. 3 is a perspective view of the resonator plate. 1 is an ultrasonic vibrator, 2 is a case, 3 is a cushioning material,
4 and 4' are terminals, 5 is a shaft, 6 is a resonant plate, 7 is an opening, 8 is a protective net, and 9 is a flexible membrane.
Claims (1)
発生器において、共振板の板面の全部又は一部に
可撓性膜を付着してなる超音波発生器。1. An ultrasonic generator consisting of an ultrasonic transducer equipped with a resonant plate, in which a flexible film is attached to all or part of the plate surface of the resonant plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13127277A JPS5463815A (en) | 1977-10-31 | 1977-10-31 | Ultrasonic wave generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13127277A JPS5463815A (en) | 1977-10-31 | 1977-10-31 | Ultrasonic wave generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5463815A JPS5463815A (en) | 1979-05-23 |
| JPS6155839B2 true JPS6155839B2 (en) | 1986-11-29 |
Family
ID=15054044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13127277A Granted JPS5463815A (en) | 1977-10-31 | 1977-10-31 | Ultrasonic wave generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5463815A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0749916Y2 (en) * | 1986-05-08 | 1995-11-13 | 株式会社村田製作所 | Ultrasonic transducer |
| JP4598747B2 (en) * | 2006-12-18 | 2010-12-15 | 三菱電機株式会社 | Ranging sensor and equipment equipped with the same |
-
1977
- 1977-10-31 JP JP13127277A patent/JPS5463815A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5463815A (en) | 1979-05-23 |
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