JPS59875Y2 - Electromagnetic electroacoustic transducer - Google Patents
Electromagnetic electroacoustic transducerInfo
- Publication number
- JPS59875Y2 JPS59875Y2 JP1528679U JP1528679U JPS59875Y2 JP S59875 Y2 JPS59875 Y2 JP S59875Y2 JP 1528679 U JP1528679 U JP 1528679U JP 1528679 U JP1528679 U JP 1528679U JP S59875 Y2 JPS59875 Y2 JP S59875Y2
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- diaphragm
- magnet
- electroacoustic transducer
- electromagnetic electroacoustic
- 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
Description
【考案の詳細な説明】
本考案は衝撃などに強い堅牢で安価な電磁型電気音響変
換器を提供しようとするものである。[Detailed Description of the Invention] The present invention aims to provide a robust and inexpensive electromagnetic electroacoustic transducer that is resistant to shocks and the like.
従来の電磁型電気音響変換器としては第１図に示すよう
に構成されていた。A conventional electromagnetic electroacoustic transducer was constructed as shown in FIG.
すなわち、センターポール１を有するプレート２上にコ
イル３、リング状のマグネット４を同心円状に配置し、
これを合成樹脂よりなる筒状のフレーム５内に収納し、
このフレーム５の上端に可動鉄板６を結合したサスペン
ション７よりなる振動板８の周縁部を配置し、さらにこ
の振動板８上を被うように上面中央に放音孔９を有する
ケース１０を被せ、フレーム５下端面に端子１１を備え
たターミナル板１２を結合して構成されていた。That is, a coil 3 and a ring-shaped magnet 4 are arranged concentrically on a plate 2 having a center pole 1,
This is housed in a cylindrical frame 5 made of synthetic resin,
A periphery of a diaphragm 8 made of a suspension 7 to which a movable iron plate 6 is connected is placed on the upper end of the frame 5, and a case 10 having a sound emitting hole 9 at the center of the top surface is placed over the diaphragm 8. , a terminal plate 12 having terminals 11 was connected to the lower end surface of the frame 5.
このような構成では、振動板８は磁気吸引力によってフ
レーム５の上端に保持されているにすぎず、衝撃力には
弱いため、振動板８の周縁部をフレーム５の上端に接続
剤で固着する必要があった。In such a configuration, the diaphragm 8 is only held at the upper end of the frame 5 by magnetic attraction and is weak against impact forces, so the peripheral edge of the diaphragm 8 is fixed to the upper end of the frame 5 with a connecting agent. I needed to.
このように接着剤を用いる場合、工程の増加、接着剤の
ばらつきなどによる振動板８の最低共振周波数ｆＯのば
らつきなどが発生し品質を安定したものにすることがで
きないものであった。When an adhesive is used in this way, the number of steps increases, and variations in the lowest resonant frequency fO of the diaphragm 8 occur due to variations in the adhesive, making it impossible to maintain stable quality.
本考案は以上のような従来の欠点を除去するものである
。The present invention eliminates the above-mentioned drawbacks of the prior art.
以下本考案の実施例を図面第２図により説明する。An embodiment of the present invention will be described below with reference to FIG. 2.
１３はキャップ状に形成された断面コ字状のヨークで゛
、このヨーク１３の中央にはヨーク１３より背の高い柱
状でＭｎ−Ａｌマグネットなどの金属製のマグネット１
４が配置され、このマグネット１４の周囲にはコイル１
５が配置されている。Reference numeral 13 denotes a yoke having a U-shaped cross section and formed into a cap shape, and in the center of this yoke 13 is a columnar magnet 1 made of metal such as an Mn-Al magnet, which is taller than the yoke 13.
4 is arranged, and a coil 1 is placed around this magnet 14.
5 is placed.
このようなヨーク１３は合成樹脂などからなる筒状のフ
レーム１６内に収納されている。Such a yoke 13 is housed within a cylindrical frame 16 made of synthetic resin or the like.
そして上記マグネット１４の上面には、リング状の可動
鉄板１７を上面に固着した薄い金属のサスペンション１
８よりなる振動板１９の中央部のサスペンション１８が
溶接などにより結合され、振動板１９の周囲は可動自由
となっている。On the upper surface of the magnet 14, a thin metal suspension 1 with a ring-shaped movable iron plate 17 fixed to the upper surface.
A suspension 18 at the center of a diaphragm 19 consisting of 8 parts is connected by welding or the like, and the periphery of the diaphragm 19 is freely movable.
なお柱状マグネット１４の上端は円錐状に尖鋭にすれば
溶接が確実で容易となる。Note that if the upper end of the columnar magnet 14 is sharpened into a conical shape, welding becomes reliable and easy.
この振動板１９の上面には放音孔２０を有するケース２
１が被せられてフレーム１６の上端に結合されている。A case 2 having a sound emitting hole 20 on the upper surface of this diaphragm 19
1 is covered and connected to the upper end of the frame 16.
さらに、フレーム１６の下端にはコイル１５の両端を接
続する端子２２を有するターミナル板２３が結合されて
いる。Furthermore, a terminal plate 23 having terminals 22 for connecting both ends of the coil 15 is coupled to the lower end of the frame 16.
このような構成でコイル１５に入力信号を印加すると、
振動板１９の周縁部の可動鉄板１７がヨーク１３の上端
に吸引されて振動し、入力信号に応じた音を発生する。When an input signal is applied to the coil 15 with such a configuration,
The movable iron plate 17 at the peripheral edge of the diaphragm 19 is attracted to the upper end of the yoke 13 and vibrates, generating a sound according to the input signal.
この音はケース２１の放音孔２０より外部に放出される
。This sound is emitted to the outside from the sound emitting hole 20 of the case 21.
以上のように本考案の電磁型電気音響変換器は構成され
るため、振動板の固定が強固となり、振動板による最低
共振周波数ｆｏのばらつきも無く品質面で著しく安定し
たものとすることになり、耐衝撃性にも優れ、コスト面
でも組立てが簡単であることから有利となるなどの利点
をもち、実用的価値の大なるものである。Since the electromagnetic electroacoustic transducer of the present invention is constructed as described above, the diaphragm is firmly fixed, and there is no variation in the minimum resonant frequency fo due to the diaphragm, resulting in extremely stable quality. It has advantages such as excellent impact resistance and easy assembly in terms of cost, and is of great practical value.
第１図は従来の電磁型電気音響変換器の断面図、第２図
は本考案の電磁型電気音響変換器の一実施例を示す断面
図である。
１３・・・・・・ヨーク、１４・・・・・・マグネット
、１５・・・・・・コイル、１６・・・・・・フレーム
、１７・・・・・・可動鉄板、１８・・・・・・サスペ
ンション、１９・・・・・・振動板、２０・・・・・・
放音孔、２１・・・・・・ケース、２２・・・・・・端
子、２３・・・・・・ターミナル板。FIG. 1 is a sectional view of a conventional electromagnetic electroacoustic transducer, and FIG. 2 is a sectional view showing an embodiment of the electromagnetic electroacoustic transducer of the present invention. 13... Yoke, 14... Magnet, 15... Coil, 16... Frame, 17... Movable iron plate, 18... ... Suspension, 19... Vibration plate, 20...
Sound emission hole, 21... Case, 22... Terminal, 23... Terminal plate.
Claims (1)
の柱状マグネットを配置し、このマグネットの周囲にコ
イルを配置したものをフレーム内に収納し、上記マグネ
ットの上端に磁性体よりなる振動板を溶着結合し、振動
板の周縁部をヨークの上端面と隙間をもって対向させて
なる電磁型電気音響変換器。A metal columnar magnet that is taller than the yoke is placed in the center of the cap-shaped yoke, and a coil is placed around this magnet, which is housed in a frame, and a diaphragm made of a magnetic material is welded to the upper end of the magnet. An electromagnetic electroacoustic transducer in which the peripheral edge of the diaphragm faces the upper end surface of the yoke with a gap between the diaphragms and the yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1528679U JPS59875Y2 (en) | 1979-02-07 | 1979-02-07 | Electromagnetic electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1528679U JPS59875Y2 (en) | 1979-02-07 | 1979-02-07 | Electromagnetic electroacoustic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55115196U JPS55115196U (en) | 1980-08-14 |
| JPS59875Y2 true JPS59875Y2 (en) | 1984-01-11 |
Family
ID=28836710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1528679U Expired JPS59875Y2 (en) | 1979-02-07 | 1979-02-07 | Electromagnetic electroacoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59875Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6016196U (en) * | 1983-07-11 | 1985-02-02 | ティーディーケイ株式会社 | Electromagnetic acoustic transducer |
-
1979
- 1979-02-07 JP JP1528679U patent/JPS59875Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55115196U (en) | 1980-08-14 |
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