JPH0819096A - Piezoelectric receiver - Google Patents
Piezoelectric receiverInfo
- Publication number
- JPH0819096A JPH0819096A JP6146327A JP14632794A JPH0819096A JP H0819096 A JPH0819096 A JP H0819096A JP 6146327 A JP6146327 A JP 6146327A JP 14632794 A JP14632794 A JP 14632794A JP H0819096 A JPH0819096 A JP H0819096A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- front case
- sound
- projection wall
- resonance 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 abstract description 8
- 230000002238 attenuated effect Effects 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 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
- Piezo-Electric Transducers For Audible Bands (AREA)
- Telephone Set Structure (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電話機やインターホン等
の受話器に使用される圧電受話器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piezoelectric receiver used in a receiver such as a telephone or an intercom.
【０００２】[0002]
【従来の技術】従来の圧電受話器について図３を用いて
説明する。図３において圧電セラミック板１は、金属基
板２の上面に貼り合わせられており、これにより圧電板
が構成されている。そしてこの圧電板の金属基板２を放
音孔３を設けた前面ケース４と背面ケース５とにより挟
持していた。そして圧電受話器駆動電圧をリード線６ａ
および６ｂを通して圧電セラミック板１の表裏の電極に
印加することにより、圧電振動を発生させるものであっ
た。2. Description of the Related Art A conventional piezoelectric receiver will be described with reference to FIG. In FIG. 3, the piezoelectric ceramic plate 1 is attached to the upper surface of the metal substrate 2 to form a piezoelectric plate. Then, the metal substrate 2 of the piezoelectric plate is sandwiched between the front case 4 and the rear case 5 provided with the sound output holes 3. The piezoelectric receiver drive voltage is supplied to the lead wire 6a.
And 6b were applied to the electrodes on the front and back of the piezoelectric ceramic plate 1 to generate piezoelectric vibration.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら従来の圧
電受話器では、放音孔３の周辺部の前面ケース４が平ら
であるため、電圧セラミック板１および金属基板２の振
動により前面ケースが共振振動し、不要な音圧ピークを
発生して、音質が悪化するという問題を有していた。な
お、このような従来の圧電受話器の周波数特性を図４に
示す。However, in the conventional piezoelectric receiver, since the front case 4 around the sound output hole 3 is flat, the front case resonates due to the vibration of the voltage ceramic plate 1 and the metal substrate 2. However, there is a problem that an unnecessary sound pressure peak is generated and the sound quality is deteriorated. The frequency characteristic of such a conventional piezoelectric receiver is shown in FIG.
【０００４】本発明はこのような従来の問題点を解決す
るもので、圧電振動が発生する際の前面ケースの共振振
動を防止し、音質改善を図った圧電受話器を提供するこ
とを目的とするものである。The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a piezoelectric receiver in which the resonance vibration of the front case is prevented when the piezoelectric vibration occurs and the sound quality is improved. It is a thing.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明の圧電受話器は、上記放音孔の周辺部に突壁を
設けたものである。In order to achieve the above object, the piezoelectric receiver of the present invention is provided with a projecting wall in the peripheral portion of the sound output hole.
【０００６】[0006]
【作用】本発明のように、前面ケースの放音孔の周辺部
に突壁を設けて振動しにくくすることにより、圧電振動
が発生する際の前面ケースの共振振動を防ぐことがで
き、不要な音圧ピークが低減され、優れた音圧−周波数
特性を持つ圧電受話器を得ることが可能となる。As in the present invention, by providing the projecting wall around the sound output hole of the front case to make it difficult to vibrate, it is possible to prevent the resonance vibration of the front case when the piezoelectric vibration occurs, which is unnecessary. It is possible to obtain a piezoelectric receiver having excellent sound pressure-frequency characteristics, in which the peak of sound pressure is reduced.
【０００７】[0007]
【実施例】以下に本発明の一実施例について図１を参照
しながら説明する。図１は本発明の圧電受話器を示す断
面図であり、図１において１は圧電セラミック板であ
り、金属基板２の上面に貼り合わせられ、これにより圧
電板が構成されている。またこの圧電板は、放音孔３を
有した前面ケース４と背面ケース６とにより上記金属基
板２の周縁部が挟持されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a cross-sectional view showing a piezoelectric receiver of the present invention. In FIG. 1, reference numeral 1 is a piezoelectric ceramic plate, which is attached to the upper surface of a metal substrate 2 to form a piezoelectric plate. Further, in this piezoelectric plate, the peripheral portion of the metal substrate 2 is sandwiched by a front case 4 having a sound emission hole 3 and a rear case 6.
【０００８】この前面ケース４には、放音孔３の周辺部
にリング状の突壁７を設けており、これにより、リード
線６ａ，６ｂを通して駆動電圧を圧電セラミック板１の
表裏の電極に印加した際に生じる前面ケース４の共振振
動は、突壁７で振動しにくくなるため減衰させることが
可能になる。The front case 4 is provided with a ring-shaped projecting wall 7 around the sound output hole 3, whereby a driving voltage is applied to the front and back electrodes of the piezoelectric ceramic plate 1 through the lead wires 6a and 6b. Resonant vibration of the front case 4 generated when applied is less likely to vibrate on the projecting wall 7, and can be damped.
【０００９】本発明のように前面ケース４の共振振動を
減衰させて音質を向上させた圧電受話器の音圧−周波数
特性を図２に示す。図２の特性は前述の従来の圧電受話
器の音圧−周波数特性を示した図４に見られた高周波数
帯域における不要な音圧ピーク８が低減されており、突
壁７を前面ケース４に設けたことにより、前面ケース４
の共振振動が減衰されて、圧電受話器の音質が改善され
たことがわかる。FIG. 2 shows the sound pressure-frequency characteristic of the piezoelectric receiver in which the resonance vibration of the front case 4 is attenuated to improve the sound quality as in the present invention. The characteristic of FIG. 2 is that the unnecessary sound pressure peak 8 in the high frequency band shown in FIG. 4, which shows the sound pressure-frequency characteristic of the above-mentioned conventional piezoelectric receiver, is reduced, and the projecting wall 7 is set to the front case 4. By providing the front case 4
It can be seen that the resonance vibration of is attenuated and the sound quality of the piezoelectric handset is improved.
【００１０】なお、上記実施例において前面ケース４に
設けた突壁７はリング状としたが、多角形状、放射状、
格子状としても同様に共振振動を抑える効果があり、ま
た前面ケース４の外側に設けても共振振動を減衰するこ
とができる。Although the projecting wall 7 provided on the front case 4 in the above embodiment is ring-shaped, it is polygonal, radial,
The lattice-like shape also has an effect of suppressing the resonance vibration, and the resonance vibration can be attenuated even if the grid-like shape is provided outside the front case 4.
【００１１】[0011]
【発明の効果】以上のように本発明によれば、前面ケー
スの放音孔の周辺部に突壁を設けることにより、圧電振
動板が発生する際に生じる前面ケースの共振振動を防止
し、音圧−周波数特性を改善した音質の優れた圧電受話
器を提供することができるものである。As described above, according to the present invention, by providing the projecting wall around the sound output hole of the front case, resonance vibration of the front case which occurs when the piezoelectric diaphragm is generated is prevented, It is possible to provide a piezoelectric receiver having an excellent sound quality with improved sound pressure-frequency characteristics.
【図１】本発明の一実施例による圧電受話器を示す断面
図FIG. 1 is a cross-sectional view showing a piezoelectric handset according to an embodiment of the present invention.
【図２】本発明の一実施例による圧電受話器の音圧−周
波数特性図FIG. 2 is a sound pressure-frequency characteristic diagram of a piezoelectric receiver according to an embodiment of the present invention.
【図３】従来の圧電受話器を示す断面図FIG. 3 is a sectional view showing a conventional piezoelectric receiver.
【図４】従来の圧電受話器の音圧−周波数特性図FIG. 4 is a sound pressure-frequency characteristic diagram of a conventional piezoelectric receiver.
１ 圧電セラミック板 ２ 金属基板 ３ 放音孔 ４ 前面ケース ５ 背面ケース ７ 突壁 1 Piezoelectric Ceramic Plate 2 Metal Substrate 3 Sound Output Hole 4 Front Case 5 Rear Case 7 Projection Wall
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０４Ｍ 1/03 Ｃ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location H04M 1/03 C
Claims (1)
壁を設けた前面ケースと、背面ケースとにより圧電板を
挟持してなる圧電受話器。1. A piezoelectric receiver having a sound emitting hole, wherein a piezoelectric plate is sandwiched between a front case and a rear case having a projecting wall around the sound emitting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6146327A JPH0819096A (en) | 1994-06-28 | 1994-06-28 | Piezoelectric receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6146327A JPH0819096A (en) | 1994-06-28 | 1994-06-28 | Piezoelectric receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0819096A true JPH0819096A (en) | 1996-01-19 |
Family
ID=15405175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6146327A Pending JPH0819096A (en) | 1994-06-28 | 1994-06-28 | Piezoelectric receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0819096A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0871345A1 (en) * | 1997-04-03 | 1998-10-14 | Sonitron, naamloze Vennootschap | Element for reproducing and/or recording sound |
| BE1011559A4 (en) * | 1997-11-20 | 1999-10-05 | Sonitron Naamloze Vennootschap | Element for reproducing and/or recording sound |
| JP2016099619A (en) * | 2014-11-26 | 2016-05-30 | 株式会社日本ロック | Piezoelectric buzzer |
-
1994
- 1994-06-28 JP JP6146327A patent/JPH0819096A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0871345A1 (en) * | 1997-04-03 | 1998-10-14 | Sonitron, naamloze Vennootschap | Element for reproducing and/or recording sound |
| BE1011085A4 (en) * | 1997-04-03 | 1999-04-06 | Sonitron Naamloze Vennootschap | ELEMENT FOR PLAYING AND / OR RECORDING SOUND. |
| BE1011559A4 (en) * | 1997-11-20 | 1999-10-05 | Sonitron Naamloze Vennootschap | Element for reproducing and/or recording sound |
| JP2016099619A (en) * | 2014-11-26 | 2016-05-30 | 株式会社日本ロック | Piezoelectric buzzer |
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