JPS641837Y2 - - Google Patents
Info
- Publication number
- JPS641837Y2 JPS641837Y2 JP4938283U JP4938283U JPS641837Y2 JP S641837 Y2 JPS641837 Y2 JP S641837Y2 JP 4938283 U JP4938283 U JP 4938283U JP 4938283 U JP4938283 U JP 4938283U JP S641837 Y2 JPS641837 Y2 JP S641837Y2
- Authority
- JP
- Japan
- Prior art keywords
- resonator
- bimorph
- cushioning material
- composite
- vibrator
- 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
- 239000002131 composite material Substances 0.000 claims description 17
- 239000000919 ceramic Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Transducers For Ultrasonic Waves (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は超音波の送信、受信を行うもので、障
害物体の検知装置や、扇風機などのワイヤレスリ
モートコントロールに用いられる超音波セラミツ
クマイクロホンに関するものである。[Detailed description of the invention] Industrial application field This invention is for transmitting and receiving ultrasonic waves, and relates to an ultrasonic ceramic microphone used in an obstacle detection device or a wireless remote control of an electric fan, etc. .
従来例の構成とその問題点
従来例における超音波セラミツクマイクロホン
の構成について第１図とともに説明する。圧電磁
器振動子イを２枚貼合わせてなるバイモルフ振動
子の中央部に結合軸２を貫通固定し、円錐状共振
子３を前記結合軸２を介して前記バイモルフ振動
子に接着固定して複合共振体を構成している。４
は中央部に凸状の取付台４ａを有する端子板で、
前記複合共振体は弾性接着剤５を介して前記取付
台４ａに固定されている。６はケースで、前記複
合共振体、端子板４を収納するものである。７
ａ，７ｂは端子板４に植設された外部端子８ａ，
８ｂはリード線である。Configuration of the conventional example and its problems The configuration of the ultrasonic ceramic microphone in the conventional example will be explained with reference to FIG. A coupling shaft 2 is fixed through the center of a bimorph oscillator made by laminating two piezoelectric ceramic oscillators A, and a conical resonator 3 is adhesively fixed to the bimorph oscillator via the coupling shaft 2 to form a composite. It constitutes a resonator. 4
is a terminal board having a convex mounting base 4a in the center,
The composite resonator is fixed to the mounting base 4a via an elastic adhesive 5. A case 6 houses the composite resonator and the terminal plate 4. 7
a, 7b are external terminals 8a implanted in the terminal board 4;
8b is a lead wire.
以上従来の構成によれば、結合軸の接着固定、
複合共振体の接着固定、円錐状共振子及びバイモ
ルフ振動子の接着、以上４つの接着を必要とした
構成のため、組立作業に時間がかかる問題があつ
た。また、部品点数（10個）が多くコストが高く
なるとともに、組立時の位置、寸法バラツキによ
る特性変動が発生しやすい問題点を有していた。 According to the conventional configuration described above, the joint shaft is fixed with adhesive,
Because the configuration required the above four types of adhesive fixation, including adhesive fixing of the composite resonator and adhesive fixing of the conical resonator and bimorph resonator, there was a problem in that the assembly work took a long time. In addition, there were problems in that the number of parts (10 pieces) was large, increasing the cost, and characteristics were likely to fluctuate due to positional and dimensional variations during assembly.
考案の目的
本考案は従来の欠点を改良するもので、簡易構
成により接着部を最小限にした構造の超音波セラ
ミツクマイクロホンを提供しようとするものであ
る。Purpose of the Invention The present invention is an attempt to improve the drawbacks of the prior art, and to provide an ultrasonic ceramic microphone having a simple structure and minimizing the number of bonded parts.
考案の構成
この目的を達成するために本考案の超音波セラ
ミツクマイクロホンは、バイモルフ振動子中央部
に円錐状共振子を接着した複合共振体と、前記バ
イモルフ振動子を固定するための緩衝材と、前記
複合共振体と緩衝材を収納、固定するケースとで
構成し、緩衝材の形状が前記複合共振体のバイモ
ルフ振動子外周と底面を囲む形で支持でき、また
ケースに収納することにより、ケースと複合共振
体との振動干渉を緩和する構成としたものであ
る。Structure of the Invention In order to achieve this object, the ultrasonic ceramic microphone of the invention includes a composite resonator in which a conical resonator is bonded to the center of a bimorph vibrator, a cushioning material for fixing the bimorph vibrator, It is composed of a case for storing and fixing the composite resonator and a cushioning material, and the shape of the cushioning material can support the bimorph resonator of the composite resonator in such a manner that it surrounds the outer periphery and bottom surface of the bimorph resonator. The configuration is such that vibration interference between the resonator and the composite resonator is alleviated.
実施例の説明
以下、本考案の一実施例について第２図ととも
に説明する。まず、金属製振動板９に圧電磁器振
動子１０を貼り合わせしたバイモルフ振動子の中
央部に円錐状共振子１１を固定し、複合共振体を
構成している。ここで、圧電磁器振動子１０を２
枚貼り合わせしてバイモルフ振動子としてもよ
い。１２ａ，１２ｂはバイモルフ振動子の上下電
極面に接続したリード線で、このリード線１２
ａ，１２ｂを介して電気信号の入出力を行う。た
とえば、リード線１２ａ，１２ｂを介してバイモ
ルフ振動子に電気信号が印加されると、バイモル
フ振動子は信号に応じた屈曲振動を行う。その振
動は円錐状共振子１１に伝わり、前記バイモルフ
振動子の共振と円錐状共振子１１の振動共振が重
なり円錐状共振子１１からの超音波出力が大きく
なるものである。１３は、前記バイモルフ振動子
の外周を支持し、その底面を圧着支持する固定穴
を有し、かつ片面中央部に凹状の穴を設けた構造
の緩衝材で、前記複合共振体を固定すると同時
に、ケース１１への挿入固定時に位置決め固定を
容易にするものである。そして、ケース１４にツ
バ部１５を設け、ケース１４の開孔部より内部保
護用としてカバー部１６の形状は網または複数個
の穴を有するスリツト板状のものを用いる。ま
た、緩衝材１３の形状は上下部分にそれぞれ分割
して、複合共振体を組込み時にはめ合せて構成し
てもその効果は得られるものである。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. First, a conical resonator 11 is fixed to the center of a bimorph resonator in which a piezoelectric ceramic resonator 10 is bonded to a metal diaphragm 9 to form a composite resonator. Here, the piezoelectric ceramic vibrator 10 is
It is also possible to make a bimorph resonator by bonding the sheets together. 12a and 12b are lead wires connected to the upper and lower electrode surfaces of the bimorph vibrator;
Electrical signals are input and output via a and 12b. For example, when an electrical signal is applied to the bimorph vibrator via the lead wires 12a, 12b, the bimorph vibrator performs bending vibration in accordance with the signal. The vibration is transmitted to the conical resonator 11, and the resonance of the bimorph vibrator and the vibrational resonance of the conical resonator 11 overlap to increase the ultrasonic output from the conical resonator 11. Reference numeral 13 denotes a cushioning material having a structure that supports the outer periphery of the bimorph resonator, has a fixing hole that presses and supports the bottom surface, and has a concave hole in the center of one side, and also serves to fix the composite resonator at the same time. This facilitates positioning and fixing when inserting and fixing into the case 11. A collar portion 15 is provided on the case 14, and a cover portion 16 is formed in the shape of a net or a slit plate having a plurality of holes to protect the inside from the opening of the case 14. Further, the effect can be obtained even if the shape of the cushioning material 13 is divided into upper and lower parts, and these parts are fitted together when the composite resonator is assembled.
考案の効果
以上のような本考案の超音波セラミツクマイク
ロホンによれば、複合共振体の支持固定が接着剤
を用いないで緩衝材に組み込む構成であると同時
にケースへの収納がはめ合い方式のため、組立が
容易でかつ簡易構成であるから低コスト化が実現
できることとなる。また、複合共振体のケースへ
の収納を緩衝材を介して行うとともに緩衝材に凹
部を設け、ケースと緩衝材の接触面積を多くする
ことにより、ケースと複合共振体との振動干渉が
緩和でき、パルス信号に対し急峻な応答性を示す
ものとなる。さらに、緩衝材に支持された複合共
振体は高次共振モードが減衰し、基本共振点での
感度を向上させることができる。Effects of the invention According to the ultrasonic ceramic microphone of the invention as described above, the composite resonator is supported and fixed by being incorporated into the cushioning material without using adhesive, and at the same time, it is stored in the case by fitting. Since it is easy to assemble and has a simple configuration, it is possible to reduce costs. In addition, the vibration interference between the case and the composite resonator can be alleviated by storing the composite resonator in the case through a cushioning material and providing a recess in the cushioning material to increase the contact area between the case and the cushioning material. , it exhibits steep responsiveness to pulse signals. Furthermore, in the composite resonator supported by the buffer material, higher-order resonance modes are attenuated, and sensitivity at the fundamental resonance point can be improved.
第１図は従来例の超音波セラミツクマイクロホ
ンの断面図、第２図は本考案による超音波セラミ
ツクマイクロホンの一実施例を示す断面図であ
る。
９……金属製振動板、１０……圧電磁器振動
子、１１……円錐状共振子、１３……ケース。
FIG. 1 is a sectional view of a conventional ultrasonic ceramic microphone, and FIG. 2 is a sectional view of an embodiment of an ultrasonic ceramic microphone according to the present invention. 9... Metal diaphragm, 10... Piezoelectric ceramic vibrator, 11... Conical resonator, 13... Case.
Claims (1)
かまたは圧電磁器振動子を２枚貼り合わせてなる
バイモルフ振動子の中央部に円錐状共振子を附加
した複合共振体と、前記バイモルフ振動子外径を
支持固定できる固定穴を有し、かつ裏面中央部に
凹部を設け取付位置を規定できる構成にした緩衝
材と、前記緩衝材の外周を支持固定できる形状を
有するケースとよりなり、前記ケース内に前記緩
衝材、複合共振体を収納してなる超音波セラミツ
クマイクロホン。 A composite resonator in which a conical resonator is added to the center of a bimorph resonator formed by pasting together a piezoelectric ceramic vibrator and a metal diaphragm, or by pasting together two piezoelectric ceramic vibrators, and an outer diameter of the bimorph vibrator. It consists of a cushioning material having a fixing hole that can support and fix it, and a recess in the center of the back surface to define the mounting position, and a case that has a shape that can support and fix the outer periphery of the cushioning material. An ultrasonic ceramic microphone in which the above-mentioned buffer material and a composite resonator are housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4938283U JPS59154995U (en) | 1983-04-01 | 1983-04-01 | ultrasonic ceramic microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4938283U JPS59154995U (en) | 1983-04-01 | 1983-04-01 | ultrasonic ceramic microphone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59154995U JPS59154995U (en) | 1984-10-17 |
| JPS641837Y2 true JPS641837Y2 (en) | 1989-01-17 |
Family
ID=30179889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4938283U Granted JPS59154995U (en) | 1983-04-01 | 1983-04-01 | ultrasonic ceramic microphone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59154995U (en) |
-
1983
- 1983-04-01 JP JP4938283U patent/JPS59154995U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59154995U (en) | 1984-10-17 |
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