JPS6098798A - Piezo-electric sound generator - Google Patents
Piezo-electric sound generatorInfo
- Publication number
- JPS6098798A JPS6098798A JP20792083A JP20792083A JPS6098798A JP S6098798 A JPS6098798 A JP S6098798A JP 20792083 A JP20792083 A JP 20792083A JP 20792083 A JP20792083 A JP 20792083A JP S6098798 A JPS6098798 A JP S6098798A
- Authority
- JP
- Japan
- Prior art keywords
- vibrator
- deflection
- piezoelectric
- piezo
- vibration
- 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、薄い金属板に薄い圧電磁器板を貼り会わせた
構造の圧電たわみ振動子を使用し音声合成音の再生や音
声の再生等に使用される圧電発音体に関するものである
。[Detailed Description of the Invention] Industrial Field of Application The present invention uses a piezoelectric deflection vibrator having a structure in which a thin piezoelectric ceramic plate is bonded to a thin metal plate, and is used for reproduction of voice synthesized sounds, voice reproduction, etc. The present invention relates to a piezoelectric sounding body.
従来例の構成とその問題点
従来のこの種の圧電発音体は５−第１図、第２図に示す
ように構成されている。すなわち、１は有底筒状のケー
スで内壁の中間部に段部１ａｉ有し圧電磁器板２ヶ貼っ
た薄い金属板よりなる振動板３から構成される圧電たわ
み振動子４の外周全接着剤によって上記ケース１の段部
１ａに固定している。５は上蓋で多数の放音孔６を有す
る。７は外部と電気的接続をするための端子でケース１
の上面に設けられている。また、８は圧電発音体の不要
共振を防止するためのダンピング用錘りで圧電たわみ振
動子４の圧電磁器板２に結合されている。Conventional structure and problems thereof A conventional piezoelectric sounding body of this type is constructed as shown in FIGS. 5-1 and 2. That is, 1 is a cylindrical case with a bottom, which has a stepped portion 1ai in the middle of the inner wall, and a piezoelectric deflection vibrator 4 consisting of a diaphragm 3 made of a thin metal plate pasted with two piezoelectric ceramic plates. It is fixed to the stepped portion 1a of the case 1 by the above-mentioned. Reference numeral 5 denotes an upper lid having a large number of sound emitting holes 6. 7 is a terminal for making an electrical connection with the outside, case 1
is installed on the top surface of the Further, 8 is a damping weight for preventing unnecessary resonance of the piezoelectric sounding body, and is coupled to the piezoelectric ceramic plate 2 of the piezoelectric deflection vibrator 4.
さて上述した従来の構成の圧電発音体にはっぎのような
欠点があった。Now, the piezoelectric sounding body of the conventional structure described above has the following drawbacks.
すなわち、圧電磁器板２にダンピング用錘り８を貼り合
わせているため、圧電たわみ振動子４の電気機械変換効
率が低下してし壕い音圧が低下する。また、接着の時に
その位置ずれを起したり、接着剤の量により質量のバラ
ツキも多くなり、不要共振部だけを抑制し周波数特性を
フラットにすることは困難であった。That is, since the damping weight 8 is bonded to the piezoelectric ceramic plate 2, the electromechanical conversion efficiency of the piezoelectric deflection vibrator 4 is reduced, and the deep sound pressure is reduced. Furthermore, when bonding, the position may shift, and the mass may vary depending on the amount of adhesive, making it difficult to suppress only unnecessary resonance portions and flatten the frequency characteristics.
発明の目的
本発明は、このような従来の欠点を除去するもので、形
状や厚みを大幅に変えることなく、不要振動全抑制し周
波数特性をフラットにした圧電発音体を提供しようとす
るものである。Purpose of the Invention The present invention aims to eliminate these conventional drawbacks and to provide a piezoelectric sounding element that completely suppresses unnecessary vibrations and has flat frequency characteristics without significantly changing the shape or thickness. be.
発明の＋ｊ４成
この目的を達成するために本発明は圧電たわみ振動子に
使用している振動板を磁性体で構成し、この圧電たわみ
振動子の外周をケースで支持し、上記圧電たわみ振動子
に対向してケースに永久磁石を配置する構成とし、この
ように構成することによって圧電発Ｂ体の不要振動部を
永久磁石の磁気吸引力によって抑制することができる。+J4 Achievement of the Invention In order to achieve this object, the present invention comprises a diaphragm used in a piezoelectric deflection vibrator made of a magnetic material, the outer periphery of the piezoelectric deflection vibrator is supported by a case, and the piezoelectric deflection vibrator is By arranging the permanent magnet in the case so as to face the piezoelectric generator B, unnecessary vibrations of the piezoelectric generator B can be suppressed by the magnetic attraction force of the permanent magnet.
実施例の説明
以下、本発明の一実施例を図面第３図、第４図を用いて
説明する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.
９は合成樹脂などの絶縁物によって成形された有底筒状
のケースであり、このケース９の内壁の中間部には段部
１０が形成されている。このケース９の段部１０には圧
電たわみ振動子１１の外周が接着剤を用いて結合されて
いる。この圧電たわみ振動子１１に、薄い鉄板などの磁
性体からなる振動板１２の下面に圧電磁器板１３を貼付
けて構成され、径の大きい振動板１２の外周が段部１０
に結合される。Reference numeral 9 denotes a bottomed cylindrical case molded from an insulating material such as synthetic resin, and a stepped portion 10 is formed in the middle of the inner wall of the case 9 . The outer periphery of a piezoelectric deflection vibrator 11 is bonded to the stepped portion 10 of the case 9 using an adhesive. This piezoelectric deflection oscillator 11 is constructed by attaching a piezoelectric ceramic plate 13 to the lower surface of a diaphragm 12 made of a magnetic material such as a thin iron plate, and the outer periphery of the diaphragm 12 having a large diameter forms a stepped portion 10.
is combined with
また、ケース９の同底面中央部には永久磁石１４が接着
などで結合され、この永久磁石１４に裏って圧電たわみ
振動子１１の振動板１２金常に吸引するようにしである
。Further, a permanent magnet 14 is bonded to the center of the bottom surface of the case 9 by adhesive or the like, so that the diaphragm 12 of the piezoelectric deflection vibrator 11 is always attracted to the diaphragm 12 behind the permanent magnet 14.
さらにケース９の上面の開口端には５放音孔１６を多数
形成した上蓋１６が取付けられ、ケース９の上端面の一
部には上記圧電たわみ振動子１１と電気的に接続され、
かつ外部の入力信号源と液源するための端子１７が設け
られている。Further, a top lid 16 having a large number of five sound emitting holes 16 is attached to the open end of the top surface of the case 9, and a part of the top surface of the case 9 is electrically connected to the piezoelectric deflection vibrator 11.
A terminal 17 is also provided for connecting an external input signal source and a liquid source.
このような構成で５端子１７に入力信号全印加すると、
この端子１７から圧電たわみ振動子１１に信号が印加さ
れてたわみ振動ケ起し、発音する。When all input signals are applied to the 5 terminal 17 with this configuration,
A signal is applied from this terminal 17 to the piezoelectric deflection vibrator 11, causing deflection vibration and sound generation.
この振動時においても圧電たわみ振動子１１の振動板１
２は常に永久磁石１４による磁気的吸引力を受けている
ため、共振などの不要振動は抑制され入力信号に対して
忠実な再生が行えることになる。Even during this vibration, the diaphragm 1 of the piezoelectric deflection vibrator 11
2 is always under the magnetic attraction force of the permanent magnet 14, unnecessary vibrations such as resonance are suppressed, and faithful reproduction of the input signal can be performed.
発明の効果
以上のような本発明の圧電発音体は、永久磁石による磁
気吸引力によって圧電たわみ振動子の不要撮動を抑制す
るため、圧電たわみ振動子の質量を増加させることなく
、圧電たわめ振動子に均一に磁気吸引力が働いて安定し
た不要撮動の抑制が行え、入力信号に対して忠実な再生
が行えるとともに音圧周波数特性の平坦な、しかも音圧
レベルの高いものが得られるなどの利点をもち、工業的
価値の大なるものである。Effects of the Invention The piezoelectric sounding body of the present invention as described above suppresses unnecessary imaging of the piezoelectric deflection vibrator by the magnetic attraction force of the permanent magnet, so it is possible to reduce the piezoelectric deflection without increasing the mass of the piezoelectric deflection vibrator. The magnetic attraction force acts uniformly on the vibrator, stably suppressing unnecessary imaging, and faithfully reproducing the input signal, while also achieving flat sound pressure frequency characteristics and a high sound pressure level. It has great industrial value, with advantages such as:
第１図は従来の圧電発音体の平面図、第２図は同断面図
、第３図は本発明の圧電発音体の一実施例ケ示す平面図
、第４図は同断面図である。
９ ・・・ケース＋１０・・・・・・段部、１１・・・
・圧電たわみ振動子、１２・・・・・振動板、１３・・
・・圧電磁器板、１４・・・・・・永久磁石、１６・旧
・放音孔、１６・・・・・・上蓋、１・γ・・・・端子
。
代理人の氏名 弁理士 中 尾 敏 男 はが１名第１
図 第２図FIG. 1 is a plan view of a conventional piezoelectric sounding body, FIG. 2 is a sectional view thereof, FIG. 3 is a plan view showing an embodiment of the piezoelectric sounding body of the present invention, and FIG. 4 is a sectional view thereof. 9...Case+10...Stepped part, 11...
・Piezoelectric deflection vibrator, 12... Vibration plate, 13...
・Piezoelectric ceramic plate, 14・Permanent magnet, 16・Old sound emission hole, 16・Top lid, 1・γ・・Terminal. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2
Claims (1)
子の外周をケースで支持し、上記たわみ振動子に対向し
て水入磁石ケ装置してなる圧電発音体。A piezoelectric sounding body comprising a piezoelectric flexure vibrator formed by fixing a piezoelectric ceramic plate to a magnetic diaphragm, the outer periphery of which is supported by a case, and a water-immersed magnet device facing the flexure oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20792083A JPS6098798A (en) | 1983-11-04 | 1983-11-04 | Piezo-electric sound generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20792083A JPS6098798A (en) | 1983-11-04 | 1983-11-04 | Piezo-electric sound generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6098798A true JPS6098798A (en) | 1985-06-01 |
Family
ID=16547741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20792083A Pending JPS6098798A (en) | 1983-11-04 | 1983-11-04 | Piezo-electric sound generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6098798A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6437200U (en) * | 1987-08-28 | 1989-03-06 |
-
1983
- 1983-11-04 JP JP20792083A patent/JPS6098798A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6437200U (en) * | 1987-08-28 | 1989-03-06 |
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