JP2836243B2 - Ultrasonic ceramic microphone - Google Patents
Ultrasonic ceramic microphoneInfo
- Publication number
- JP2836243B2 JP2836243B2 JP31734490A JP31734490A JP2836243B2 JP 2836243 B2 JP2836243 B2 JP 2836243B2 JP 31734490 A JP31734490 A JP 31734490A JP 31734490 A JP31734490 A JP 31734490A JP 2836243 B2 JP2836243 B2 JP 2836243B2
- Authority
- JP
- Japan
- Prior art keywords
- vibrator
- connector
- ultrasonic
- piezoelectric ceramic
- signal input
- 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 - Fee Related
Links
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、超音波の送受信器に使用される超音波セラ
ミックマイクロホンに関するものである。Description: TECHNICAL FIELD The present invention relates to an ultrasonic ceramic microphone used for an ultrasonic transceiver.
従来の技術 近年、超音波セラミックマイクロホンの応用展開は、
物体の検知や物体の距離を判定するセンサー、ペット用
の超音波による害虫駆除、各種玩具への応用など著しく
伸長しており、同時にコストダウンの要望も比例して強
くなってきている。2. Related Art In recent years, application development of ultrasonic ceramic microphones has been
Applications for detecting objects, determining the distance between objects, controlling pests by ultrasonic waves for pets, and applying to various toys have been remarkably growing. At the same time, demands for cost reduction have been increasing in proportion.
従来、この種の超音波セラミックマイクロホンは、第
２図に示すような構成であった。以下その構成について
第２図を参照しながら説明する。Conventionally, this type of ultrasonic ceramic microphone has a configuration as shown in FIG. The configuration will be described below with reference to FIG.
図に示すように、ケース１の底部に端子板２が組み込
まれ、この端子板２上には圧電磁器振動子３と振動板４
が貼り合わされたユニモルフ振動子５が弾性接着剤６に
より弾性固定されて載置されている。７は円錐状共振子
で前記ユニモルフ振動子５上の中央に固定されており、
さらに円錐状共振子７の上部にはケース１の上部開口部
にスクリーン８が取り付けられている。また、ケース１
の底部に組み込まれた端子板２には一対の電気信号入出
力端子９がその端子板２を貫通して植設されており、こ
の電気信号入出力端子９のケース１内方向の突出端子9a
からは、前記ユニモルフ振動子５のそれぞれの電極であ
る圧電磁器振動子３と振動板４にリード線10が両端をハ
ンダ付けにより接続されて、超音波セラミックマイクロ
ホンが構成されている。As shown in the figure, a terminal plate 2 is incorporated at the bottom of a case 1, and a piezoelectric ceramic vibrator 3 and a vibrating plate 4 are provided on the terminal plate 2.
The unimorph vibrator 5 to which is adhered is elastically fixed by an elastic adhesive 6 and placed. Reference numeral 7 denotes a conical resonator which is fixed at the center on the unimorph vibrator 5,
Further, a screen 8 is attached to the upper opening of the case 1 above the conical resonator 7. Case 1
A pair of electric signal input / output terminals 9 are implanted in the terminal plate 2 incorporated at the bottom of the terminal plate 2 so as to penetrate the terminal plate 2.
From above, lead wires 10 are connected by soldering both ends to the piezoelectric ceramic vibrator 3 and the vibrating plate 4 which are the respective electrodes of the unimorph vibrator 5 to form an ultrasonic ceramic microphone.
以下、その動作について説明する。まず、超音波が送
信される場合、電気信号入出力端子９に電気信号が入力
されるとリード線10からユニモルフ振動子５の圧電磁器
振動子３に電圧が印加され、圧電磁器振動子３がタワミ
振動を行い、円錐状共振子７から超音波が発生し、スク
リーン８を透過して空中へ放射（送信）される。逆に、
超音波が受信される場合は、空中からスクリーン８を透
過して円錐状共振子７が超音波を受け、ユニモルフ振動
子５をタワミ振動させ、圧電磁器振動子３から電気信号
が発生し、リード線10から電気信号入出力端子９に電気
信号が導かれて受信されることとなる。Hereinafter, the operation will be described. First, when an ultrasonic wave is transmitted, when an electric signal is input to the electric signal input / output terminal 9, a voltage is applied to the piezoelectric ceramic oscillator 3 of the unimorph oscillator 5 from the lead wire 10, and the piezoelectric ceramic oscillator 3 Ultrasonic waves are generated from the conical resonator 7 by the deflection vibration and are transmitted (transmitted) through the screen 8 to the air. vice versa,
When an ultrasonic wave is received, the conical resonator 7 receives the ultrasonic wave through the screen 8 from the air, causes the unimorph vibrator 5 to vibrate, and generates an electric signal from the piezoelectric ceramic vibrator 3 to generate a lead. An electric signal is guided from the line 10 to the electric signal input / output terminal 9 and received.
発明が解決しようとする課題 このような従来の超音波セラミックマイクロホンの構
成では、組み立て工程でリード線10のハンダ付けが大き
な支障となるものであった。すなわち、リード線10の線
経及び材質はモニモルフ振動子５の振動を阻害しないよ
う、細く、軟らかいことが条件であり、従ってその取り
扱いには細心の注意を要し、且つハンダ付け工程の途上
においては、リード線10の曲がりを補正しながらハンダ
付けし、取り付けられた後もケース１に組み込まれるま
ではリード線10がケース１やユニモルフ振動子５に接触
しないよう確認しなければならず、工数のアップによる
コストアップと管理上の不安による信頼性にも問題を残
すものであった。さらに、ハンダ付けの熱による圧電磁
器振動子３への悪影響や機械的強度のバラツキ等、多く
の課題があった。Problems to be Solved by the Invention In such a configuration of the conventional ultrasonic ceramic microphone, soldering of the lead wire 10 in the assembling process is a great obstacle. That is, it is necessary that the wire and material of the lead wire 10 be thin and soft so as not to hinder the vibration of the monimorph vibrator 5. Therefore, it is necessary to pay close attention to the handling thereof, and during the soldering process. Must be soldered while correcting the bending of the lead wire 10, and after it is attached, it must be checked that the lead wire 10 does not come into contact with the case 1 or the unimorph vibrator 5 until it is assembled into the case 1. In addition, there was also a problem with the cost increase due to the increase in the cost and the reliability due to the management insecurity. Further, there have been many problems such as a bad influence on the piezoelectric ceramic vibrator 3 due to the heat of soldering and a variation in mechanical strength.
本発明は上記課題を解決するもので、組み立て工数の
削減と信頼性の確保を目的とするものである。The present invention has been made to solve the above problems, and has as its object to reduce the number of assembling steps and ensure reliability.
課題を解決するための手段 この課題を解決するために本発明は、電気信号入出力
端子のケース内方向の突出端子に、導電性で弾性を有す
るコネクタをそれぞれ装着し、一方のコネクタが圧電磁
器振動子の電極に接触し、他方のコネクタが振動板に接
触されるようにコネクタの弾性に抗して組み込んだ構成
としたものである。Means for Solving the Problems In order to solve this problem, the present invention is to mount a conductive and elastic connector on each of the projecting terminals of the electric signal input / output terminals in the case direction, and one of the connectors is a piezoelectric ceramic. The configuration is such that the connector is incorporated against the elasticity of the connector so that the electrode contacts the vibrator and the other connector contacts the diaphragm.
作 用 本発明は上記の構成により、組み立ての簡素化が実現
し、ユニモルフ振動子と電気信号入出力端子との電気信
号の接続信頼性が高くなるものである。Operation The present invention achieves the simplification of the assembly by the above configuration, and enhances the connection reliability of the electric signal between the unimorph vibrator and the electric signal input / output terminal.
実施例 以下、本発明の一実施例について第１図を参照しなが
ら説明する。尚、従来例と同一部品については同一番号
を付し、説明を省略する。第１図に示すように、11は導
電性で弾性を有するコネクタで、電気信号入出力端子９
のケース１内方向の突出端子9aにそれぞれ装着されてお
り、このコネクタ11の一方が圧電磁器振動子３の電極に
接触し、コネクタ11の他方が振動板４に接触されて圧電
磁器振動子３の他方の電極と接触されるようにそれぞれ
コネクタ11の弾性に抗して組み込まれている。Embodiment An embodiment of the present invention will be described below with reference to FIG. Note that the same parts as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted. As shown in FIG. 1, reference numeral 11 denotes a conductive and elastic connector,
Each of the connectors 11 is in contact with the electrode of the piezoelectric ceramic vibrator 3, and the other of the connectors 11 is in contact with the vibrating plate 4 so that the piezoelectric vibrator 3 Are mounted against the elasticity of the connector 11 so as to be in contact with the other electrode of the connector.
この構成により、組み立ては端子板４に植設された電
気信号入出力端子９のケース１内方向の突出端子9aに予
めコネクタ11を装着しておき、次にユニモルフ振動子５
を弾性接着剤６により端子板４上に弾性固定する簡素化
された工法が実現されることとなる。According to this configuration, the connector 11 is attached to the protruding terminal 9a of the electric signal input / output terminal 9 implanted in the terminal plate 4 in the case 1 inward, and then the unimorph vibrator 5
Is elastically fixed on the terminal plate 4 by the elastic adhesive 6 to realize a simplified method.
なお、コネクタ11の材質及び形状は、導電性で弾性を
有する部材であれば本発明の作用が得られるものであ
り、例えば導電性ゴムチューブや導電性プラスチック、
金属でなるスプリング状のものでよい。Note that the material and shape of the connector 11 are those that can achieve the effects of the present invention as long as they are conductive and elastic, such as a conductive rubber tube and a conductive plastic.
It may be a spring made of metal.
発明の効果 以上の実施例から明らかなように、本発明によれば電
気信号入出力端子のケース内方向の突出端子に、導電性
で弾性を有するコネクタをそれぞれ装着し、一方のコネ
クタが圧電磁器振動子の電極に接触し、他方のコネクタ
が振動板に接触されるようにコネクタの弾性に抗して組
み込むことにより、組み立て工数の大幅な削減とリード
線の引き回しによる性能バラツキもなく、結果的に歩留
まりの向上も図ることができ、トータルコストとして削
減が図れるものである。また、従来例のように使用中に
ユニモルフ振動子の振動によるリード線切断やハンダ外
れ等の異常発生も解消され、さらに圧電磁器振動子に直
接加熱されることがないため、圧電磁器振動子の特性に
影響を及ぼすことなく、信頼性の面においても従来に比
べ安定、且つ、向上するものである。As is clear from the above embodiments, according to the present invention, a conductive and elastic connector is attached to each of the projecting terminals of the electric signal input / output terminals in the case direction, and one of the connectors is a piezoelectric ceramic. By assembling against the elasticity of the connector so that the electrode of the vibrator contacts the electrode and the other connector comes into contact with the diaphragm, there is no significant variation in the number of assembling man-hours and no variation in performance due to lead wiring, and as a result Therefore, the yield can be improved, and the total cost can be reduced. In addition, the occurrence of abnormalities such as breakage of the lead wire or detachment of the solder due to the vibration of the unimorph vibrator during use as in the conventional example is also eliminated, and the piezoelectric vibrator is not directly heated. Without affecting the characteristics, the reliability is more stable and improved than before.
第１図は本発明の一実施例による超音波セラミックマイ
クロホンの正面断面図、第２図は従来の超音波セラミッ
クマイクロホンの正面断面図である。 １……ケース、２……端子板、３……圧電磁器振動子、
４……振動板、５……ユニモルフ振動子、９……電気信
号入出力端子、9a……突出端子、11……コネクタ。FIG. 1 is a front sectional view of an ultrasonic ceramic microphone according to an embodiment of the present invention, and FIG. 2 is a front sectional view of a conventional ultrasonic ceramic microphone. 1 ... case, 2 ... terminal board, 3 ... piezoelectric ceramic vibrator,
Reference numeral 4: diaphragm, 5: unimorph vibrator, 9: electric signal input / output terminal, 9a: protruding terminal, 11: connector.
Claims (1)
端子板上に載置された振動板と圧電磁器振動子を貼り合
わせてなるユニモルフ振動子と、前記端子板に両端が突
出して貫通された電気信号入出力端子と、この電気信号
入出力端子のケース内方向の突出端子にそれぞれ装着さ
れた導電性で弾性を有するコネクタとを有し、一方のコ
ネクタが前記圧電磁器振動子の電極に接触し、他方のコ
ネクタが前記振動板に接触されるように弾性に抗して組
み込まれた超音波セラミックマイクロホン。1. A terminal board incorporated in a bottom of a case, a unimorph vibrator obtained by bonding a vibrating plate and a piezoelectric ceramic vibrator mounted on the terminal plate, and both ends projecting through the terminal plate. Electrical signal input / output terminal, and a conductive and elastic connector mounted on each of the projecting terminals of the electrical signal input / output terminal inward of the case. One of the connectors is an electrode of the piezoelectric ceramic vibrator. And an ultrasonic ceramic microphone which is built in such a way that the other connector is brought into contact with the diaphragm so as to resist elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31734490A JP2836243B2 (en) | 1990-11-20 | 1990-11-20 | Ultrasonic ceramic microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31734490A JP2836243B2 (en) | 1990-11-20 | 1990-11-20 | Ultrasonic ceramic microphone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04187000A JPH04187000A (en) | 1992-07-03 |
| JP2836243B2 true JP2836243B2 (en) | 1998-12-14 |
Family
ID=18087177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31734490A Expired - Fee Related JP2836243B2 (en) | 1990-11-20 | 1990-11-20 | Ultrasonic ceramic microphone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2836243B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980074592A (en) * | 1997-03-26 | 1998-11-05 | 윤종용 | Automation speaker terminal structure |
-
1990
- 1990-11-20 JP JP31734490A patent/JP2836243B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04187000A (en) | 1992-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7970161B2 (en) | Acoustic transducer having reduced thickness | |
| EP1032244A2 (en) | Electroacoustic transducer | |
| US6445108B1 (en) | Piezoelectric acoustic component | |
| US5939817A (en) | Surface acoustic wave device | |
| JP3308759B2 (en) | Surface acoustic wave device | |
| US7898151B2 (en) | Ultrasonic sensor having a piezoelectric element | |
| EP1699258B1 (en) | Electro-acoustic transducer with holder | |
| JP2836243B2 (en) | Ultrasonic ceramic microphone | |
| CN1956604A (en) | Bone-conduction microphone and method of manufacturing the same | |
| JP2001128293A (en) | Piezoelectric device | |
| JP2001326997A (en) | Piezoelectric sound generating device | |
| JP2002238094A (en) | Piezoelectric acoustic part and method for manufacturing the same | |
| JP2623643B2 (en) | Ultrasonic ceramic microphone | |
| JPS5830392Y2 (en) | ultrasonic ceramic microphone | |
| JPS6311837Y2 (en) | ||
| CN215222488U (en) | Conductive module and loudspeaker and electronic equipment comprising same | |
| JP2002153461A (en) | Ultrasonic vibrator and manufacturing method therefor | |
| JP2549911Y2 (en) | Ultrasonic transducer | |
| JPH09307996A (en) | Piezoelectric speaker | |
| JPH0411440Y2 (en) | ||
| JPH0731664Y2 (en) | Speaker device | |
| US20040119379A1 (en) | Piezoelectric transducer module having interconnected transducer units | |
| JPH11355892A (en) | Piezoelectric diaphragm and piezoelectric acoustic component using the piezoelectric diaphragm | |
| JPH0636640B2 (en) | Piezoelectric microphone | |
| JPH11355891A (en) | Piezoelectric diaphragm and piezoelectric acoustic component using the piezoelectric diaphragm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |