JPH0525239B2 - - Google Patents
Info
- Publication number
- JPH0525239B2 JPH0525239B2 JP23262084A JP23262084A JPH0525239B2 JP H0525239 B2 JPH0525239 B2 JP H0525239B2 JP 23262084 A JP23262084 A JP 23262084A JP 23262084 A JP23262084 A JP 23262084A JP H0525239 B2 JPH0525239 B2 JP H0525239B2
- Authority
- JP
- Japan
- Prior art keywords
- lead wire
- piezoelectric
- piezoelectric vibrator
- metal plate
- housing
- 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 - Lifetime
Links
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000012212 insulator Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000013585 weight reducing agent 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)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は各種音響機器に利用される圧電型スピ
ーカに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a piezoelectric speaker used in various audio equipment.
従来の技術
近年、各種音響機器に利用されるスピーカとし
て、軽量化、省電力化のために圧電型スピーカが
多く利用されるようになつてきた。2. Description of the Related Art In recent years, piezoelectric speakers have come into widespread use as speakers for various types of audio equipment due to their weight reduction and power saving.
従来の圧電型スピーカは、第４図に示すように
両面に電極を形成した圧電セラミツク板１を少し
大径の金属板２に貼付けて構成した圧電振動子３
の上面中央部にコーン状の振動板４の中心部を接
着剤５で結合し、この振動板４の周縁部をハウジ
ング６の周縁部に接着結合し、上記圧電振動子３
の下面はハウジング６の内底面に突出させた支持
片７によつて支持し、上記圧電振動子３の圧電セ
ラミツク板１の金属板２と接しない側の電極から
リード線８を引出し、ハウジング６の底面に設け
たラグ端子９に接続し、図示していないが金属板
２からもリード線を引出し、ハウジング６の底面
の他のラグ端子に接続して構成されていた。 A conventional piezoelectric speaker has a piezoelectric vibrator 3 constructed by pasting a piezoelectric ceramic plate 1 with electrodes formed on both sides onto a metal plate 2 having a slightly larger diameter, as shown in FIG.
The center part of a cone-shaped diaphragm 4 is bonded to the center of the upper surface with an adhesive 5, and the periphery of this diaphragm 4 is adhesively bonded to the periphery of the housing 6.
The lower surface of the housing 6 is supported by a support piece 7 protruding from the inner bottom surface of the housing 6, and a lead wire 8 is drawn out from the electrode on the side of the piezoelectric vibrator 3 that is not in contact with the metal plate 2 of the piezoelectric ceramic plate 1. Although not shown, lead wires were also drawn out from the metal plate 2 and connected to other lug terminals on the bottom surface of the housing 6.
発明が解決しようとする問題点
このような従来の構成では、リード線８として
絶縁被覆線を用いても、動作時にリード線８が圧
電振動子３の金属板２の外周縁部に当り、絶縁破
壊を起こして短絡してしまつたり、ひどいものに
なると断線してしまうことになり、ビニール電線
をリード線８として用いることも考えられるが、
微小寸法に加工することができず、圧電振動子３
に対して付加される質量が大きくなるといつた問
題があつた。Problems to be Solved by the Invention In such a conventional configuration, even if an insulated wire is used as the lead wire 8, the lead wire 8 hits the outer peripheral edge of the metal plate 2 of the piezoelectric vibrator 3 during operation, causing the insulation to deteriorate. It is possible to use vinyl electric wire as the lead wire 8, since it may cause damage and cause a short circuit, or if it becomes severe, it may break.
Piezoelectric vibrator 3 cannot be processed into minute dimensions.
There was a problem when the mass added to the cylinder became large.
本発明はこのような従来の問題点を解決するも
ので、圧電振動子の圧電セラミツク板から引出す
リード線と金属板との絶縁を確実なものとした圧
電型スピーカを提供することを目的とするもので
ある。 The present invention solves these conventional problems, and aims to provide a piezoelectric speaker that ensures reliable insulation between the lead wire drawn out from the piezoelectric ceramic plate of the piezoelectric vibrator and the metal plate. It is something.
問題点を解決するための手段
この問題点を解決するために本発明は、両面に
電極を設けた圧電セラミツク板と金属板との結合
体よりなる圧電振動子に振動板を結合し、この振
動板の周縁部をハウジングの周縁部に結合し、上
記圧電振動子の少なくとも電極に接続する引出線
の引出部分の外周縁部に絶縁体を被せた構成とし
たものである。Means for Solving the Problem In order to solve this problem, the present invention combines a diaphragm with a piezoelectric vibrator made of a combination of a piezoelectric ceramic plate with electrodes on both sides and a metal plate, and The peripheral edge of the plate is coupled to the peripheral edge of the housing, and an insulator is placed over the outer peripheral edge of the lead-out portion of the lead wire connected to at least the electrode of the piezoelectric vibrator.
作 用
この構成とすることにより圧電振動子が振動し
たときにリード線が金属板の外周縁部に当つて絶
縁被覆が破壊されて短絡事故を起すことは防止で
きる。Function: With this configuration, it is possible to prevent the lead wire from hitting the outer peripheral edge of the metal plate when the piezoelectric vibrator vibrates, thereby destroying the insulation coating and causing a short circuit accident.
実施例
以下、本発明の実施例を図面第１図〜第３図を
用いて説明する。Embodiments Hereinafter, embodiments of the present invention will be described using FIGS. 1 to 3 of the drawings.
１０は両面など銀などからなる電極を焼付けて
形成された圧電セラミツク板１１を、この圧電セ
ラミツク板１１より少し大径の金属板１２の両面
に貼付けて一体化した圧電振動子であり、この圧
電振動子１０は有底状のハウジング１３の内底面
に突出させた支持片１４により、第一次共振の節
に相当する部分を支持されている。 10 is a piezoelectric vibrator in which a piezoelectric ceramic plate 11 formed by baking electrodes made of silver or the like on both sides is attached to both sides of a metal plate 12 having a slightly larger diameter than the piezoelectric ceramic plate 11; The vibrator 10 is supported by a support piece 14 protruding from the inner bottom surface of a bottomed housing 13 at a portion corresponding to a node of primary resonance.
また、圧電振動子１０の上面中央部にはコーン
状の振動板１５の中央部が接着剤１６により結合
され、この振動板１５の周縁部はハウジング１３
の周縁部に接着結合されている。 Further, the center part of a cone-shaped diaphragm 15 is bonded to the center part of the upper surface of the piezoelectric vibrator 10 with an adhesive 16, and the peripheral part of this diaphragm 15 is attached to the housing 13.
is adhesively bonded to the periphery of the
さらにこの圧電振動子１０の圧電セラミツク板
１１の金属板１２と接合されていない方の面の電
極からは絶縁被覆の施されたリード線１７が引出
されており、このリード線１７はハウジング１３
の底面に設けたラグ端子１８に接続されている。
この少なくともリード線１７の引出されている部
分にはシリコンチユーブなどの絶縁体１９が取付
けられている。 Furthermore, an insulated lead wire 17 is drawn out from the electrode on the surface of the piezoelectric ceramic plate 11 of the piezoelectric vibrator 10 that is not bonded to the metal plate 12, and this lead wire 17 is connected to the housing 13.
It is connected to a lug terminal 18 provided on the bottom surface of the.
An insulator 19 such as a silicon tube is attached to at least the portion where the lead wire 17 is drawn out.
また、このリード線１７の引出部と180度異な
る位置の圧電振動子１０の金属板１２からも図示
していないがリード線が引出されハウジング１３
の底面のラグ端子に接続されている。 Further, although not shown, a lead wire is pulled out from the metal plate 12 of the piezoelectric vibrator 10 at a position 180 degrees different from the lead wire 17 and the housing 13.
is connected to the lug terminal on the bottom of the
このような構成とすることにより、リード線１
７を通して入力信号が印加されると、その入力信
号に応じて圧電振動子１０が振動し、その振動が
振動板１５に伝播され振動板１５から音が放射さ
れる。このとき、リード線１７も圧電振動子１０
の振動によつて振動するが、このリード線１７の
引出部に対応する位置の圧電振動子１０の周縁部
には絶縁体１９が被せられているため、金属板１
２の周縁部にリード線１７が当接して絶縁被覆が
破損されることはなく、短絡事故を起して入力信
号が正確に印加されないといつたことは防止でき
る。 With such a configuration, the lead wire 1
When an input signal is applied through 7, piezoelectric vibrator 10 vibrates in accordance with the input signal, the vibration is propagated to diaphragm 15, and sound is radiated from diaphragm 15. At this time, the lead wire 17 also connects to the piezoelectric vibrator 10.
The piezoelectric vibrator 10 vibrates due to the vibration of the lead wire 17, but since the peripheral edge of the piezoelectric vibrator 10 at the position corresponding to the lead wire 17 is covered with an insulator 19, the metal plate 1
The insulation coating will not be damaged due to the lead wire 17 coming into contact with the peripheral edge of the lead wire 17, and it is possible to prevent a short circuit from occurring and causing an incorrect input signal to be applied.
なお、第２図はリード線１７の引出部に相当す
る一部のみに絶縁体１９を取付けたものを示して
いるが、第３図に示すように全周に熱収縮チユー
ブなどの絶縁体１９を取付けてもよい。なお、第
３図でリード線２０は金属板１２から引出される
リード線である。 Although FIG. 2 shows an insulator 19 attached only to a portion corresponding to the lead-out portion of the lead wire 17, as shown in FIG. may be installed. Note that the lead wire 20 in FIG. 3 is a lead wire drawn out from the metal plate 12.
発明の効果
以上のように本発明の圧電型スピーカは、圧電
振動子の圧電モラミツク板の電極から引出される
リード線の少なくとも引出部分に絶縁体を取付け
たため、リード線が圧電振動子の金属板の周縁部
に当つて絶縁被覆を破壊され、短絡事故を起すと
いつたことが防止でき、きわめて安全性に富んだ
ものとすることができる実用的価値の大なるもの
である。Effects of the Invention As described above, in the piezoelectric speaker of the present invention, an insulator is attached to at least the lead-out portion of the lead wire drawn out from the electrode of the piezoelectric morami plate of the piezoelectric vibrator. This is of great practical value as it can prevent damage to the insulating coating caused by contact with the periphery of the wire and cause a short circuit accident, making it extremely safe.
第１図は本発明の圧電型スピーカの一実施例を
示す半断面図、第２図は同圧電振動子の要部の斜
視図、第３図は他の実施例の圧電振動子の断面
図、第４図は従来の圧電型スピーカの半断面図で
ある。
１０……圧電振動子、１１……圧電セラミツク
板、１２……金属板、１３……ハウジング、１４
……支持片、１５……振動板、１６……接着剤、
１７……リード線、１８……ラグ端子、１９……
絶縁体、２０……リード線。
FIG. 1 is a half-sectional view showing one embodiment of the piezoelectric speaker of the present invention, FIG. 2 is a perspective view of the main parts of the same piezoelectric vibrator, and FIG. 3 is a cross-sectional view of a piezoelectric vibrator of another embodiment. , FIG. 4 is a half-sectional view of a conventional piezoelectric speaker. 10... Piezoelectric vibrator, 11... Piezoelectric ceramic plate, 12... Metal plate, 13... Housing, 14
... Support piece, 15 ... Vibration plate, 16 ... Adhesive,
17... Lead wire, 18... Lug terminal, 19...
Insulator, 20...Lead wire.
Claims (1)
板との結合体よりなる圧電振動子に振動板を結合
し、この振動板の周縁部をハウジングの周縁部に
結合し、上記圧電振動子の少なくとも電極に接続
する引出線の引出部分の外周縁部に絶縁体を被せ
てなる圧電型スピーカ。1. A diaphragm is coupled to a piezoelectric vibrator made of a combination of a piezoelectric ceramic plate and a metal plate provided with electrodes on both sides, and a peripheral portion of the diaphragm is coupled to a peripheral portion of a housing, and at least one of the piezoelectric vibrators is A piezoelectric speaker that is made by covering the outer periphery of the lead wire that connects to the electrode with an insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23262084A JPS61111099A (en) | 1984-11-05 | 1984-11-05 | Piezoelectric type speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23262084A JPS61111099A (en) | 1984-11-05 | 1984-11-05 | Piezoelectric type speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61111099A JPS61111099A (en) | 1986-05-29 |
| JPH0525239B2 true JPH0525239B2 (en) | 1993-04-12 |
Family
ID=16942177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23262084A Granted JPS61111099A (en) | 1984-11-05 | 1984-11-05 | Piezoelectric type speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61111099A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02288800A (en) * | 1989-04-28 | 1990-11-28 | Murata Mfg Co Ltd | Piezoelectric speaker |
-
1984
- 1984-11-05 JP JP23262084A patent/JPS61111099A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61111099A (en) | 1986-05-29 |
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