JPH02130196U - - Google Patents
Info
- Publication number
- JPH02130196U JPH02130196U JP2957990U JP2957990U JPH02130196U JP H02130196 U JPH02130196 U JP H02130196U JP 2957990 U JP2957990 U JP 2957990U JP 2957990 U JP2957990 U JP 2957990U JP H02130196 U JPH02130196 U JP H02130196U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- sound emitting
- vibrator
- cylindrical body
- sound
- 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
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Description
第１図は従来における電気音響変換器の構成の
一例を示す断面図、第２図および第３図は周波数
特性の一例を示す図、第４図は本考案の一実施例
における電気音響変換器の構成を示す断面図、第
５図は同変換器の平面図、第６図は周波数特性の
変化を示す図である。
１１……筒体、１３Ａ〜１３Ｆ……放音孔、１
４……凹部、１５……ねじ部、１６……共鳴室調
節体、１７……ねじ部、１８……圧電振動子、１
９……回路基板、２０……回路部品、２３……共
鳴室、２４……放音孔調節体、２５……連通孔、
２６……係合突起。
FIG. 1 is a sectional view showing an example of the configuration of a conventional electroacoustic transducer, FIGS. 2 and 3 are views showing an example of frequency characteristics, and FIG. 4 is an electroacoustic transducer according to an embodiment of the present invention. 5 is a plan view of the converter, and FIG. 6 is a diagram showing changes in frequency characteristics. 11... Cylindrical body, 13A to 13F... Sound emission hole, 1
4... Recessed portion, 15... Threaded portion, 16... Resonance chamber adjustment body, 17... Threaded portion, 18... Piezoelectric vibrator, 1
9... Circuit board, 20... Circuit component, 23... Resonance chamber, 24... Sound emission hole adjustment body, 25... Communication hole,
26...Engaging protrusion.
Claims (1)
動子とで囲まれた内部空間を共鳴室とし、上記振
動子に対向する上記筒体の一端に共鳴室と外部と
を連通する放音孔を設けるとともに、上記振動子
を自励発信回路により駆動して上記放音孔から音
を発生させる電気音響変換器において、 前記筒体の一端に配設された各々開口面積の異
なる複数の放音孔と、 前記筒体の放音孔配設面上をステツプ的にスラ
イド移動することにより前記各放音孔を孔単位で
選択的に開口させる連通孔を有する放音孔調節体
とを具備したことを特徴とする電気音響変換器。[Claims for Utility Model Registration] A plate-shaped vibrator is disposed inside a cylindrical body, an internal space surrounded by the cylindrical body and the vibrator is used as a resonance chamber, and the cylindrical body facing the vibrator is In an electroacoustic transducer, a sound emitting hole is provided at one end to communicate the resonance chamber with the outside, and the vibrator is driven by a self-excited oscillation circuit to generate sound from the sound emitting hole. A plurality of sound emitting holes are arranged, each having a different opening area, and each of the sound emitting holes is selectively opened hole by hole by sliding in a stepwise manner on the sound emitting hole arrangement surface of the cylindrical body. An electroacoustic transducer comprising: a sound emission hole adjustment body having a communication hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2957990U JPH02130196U (en) | 1990-03-26 | 1990-03-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2957990U JPH02130196U (en) | 1990-03-26 | 1990-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02130196U true JPH02130196U (en) | 1990-10-26 |
Family
ID=31532333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2957990U Pending JPH02130196U (en) | 1990-03-26 | 1990-03-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02130196U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002169565A (en) * | 2000-11-30 | 2002-06-14 | Hochiki Corp | Sound releasing structure for buzzer |
| JP2006501752A (en) * | 2002-10-04 | 2006-01-12 | ソニー・エリクソン・モバイルコミュニケーションズ， エービー | Apparatus, system, method and mobile terminal for controlling acoustic source of mobile terminal |
| WO2011010713A1 (en) * | 2009-07-22 | 2011-01-27 | 日本電気株式会社 | Electronic device |
| JP2016072744A (en) * | 2014-09-29 | 2016-05-09 | 京セラ株式会社 | Acoustic generator and electronic device using the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5019376B1 (en) * | 1970-01-07 | 1975-07-07 | ||
| JPS5291693A (en) * | 1976-01-26 | 1977-08-02 | Projects Unlimited Inc | Piezooelectric buzzer |
-
1990
- 1990-03-26 JP JP2957990U patent/JPH02130196U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5019376B1 (en) * | 1970-01-07 | 1975-07-07 | ||
| JPS5291693A (en) * | 1976-01-26 | 1977-08-02 | Projects Unlimited Inc | Piezooelectric buzzer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002169565A (en) * | 2000-11-30 | 2002-06-14 | Hochiki Corp | Sound releasing structure for buzzer |
| JP2006501752A (en) * | 2002-10-04 | 2006-01-12 | ソニー・エリクソン・モバイルコミュニケーションズ， エービー | Apparatus, system, method and mobile terminal for controlling acoustic source of mobile terminal |
| JP4685450B2 (en) * | 2002-10-04 | 2011-05-18 | ソニー エリクソン モバイル コミュニケーションズ， エービー | Apparatus, system, method and mobile terminal for controlling acoustic source of mobile terminal |
| WO2011010713A1 (en) * | 2009-07-22 | 2011-01-27 | 日本電気株式会社 | Electronic device |
| JP5360213B2 (en) * | 2009-07-22 | 2013-12-04 | 日本電気株式会社 | Electronics |
| JP2016072744A (en) * | 2014-09-29 | 2016-05-09 | 京セラ株式会社 | Acoustic generator and electronic device using the same |