JPS6211118Y2 - - Google Patents
Info
- Publication number
- JPS6211118Y2 JPS6211118Y2 JP6695380U JP6695380U JPS6211118Y2 JP S6211118 Y2 JPS6211118 Y2 JP S6211118Y2 JP 6695380 U JP6695380 U JP 6695380U JP 6695380 U JP6695380 U JP 6695380U JP S6211118 Y2 JPS6211118 Y2 JP S6211118Y2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- voice coil
- edge portion
- terminal
- yoke
- 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
- 238000007747 plating Methods 0.000 claims description 2
- 229920006254 polymer film Polymers 0.000 claims description 2
- 238000007740 vapor deposition Methods 0.000 claims description 2
- 239000003973 paint Substances 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
【考案の詳細な説明】
本考案はダイナミツク形マイクロホンに関し、
ボイスコイルの引出し線と振動板のエツジ部との
接触により生じる振動系の歪を除去し、かつ共振
が発生しない、ダイナミツク形マイクロホンを提
供するものである。[Detailed description of the invention] This invention relates to a dynamic microphone.
To provide a dynamic microphone which eliminates distortion in a vibration system caused by contact between a lead wire of a voice coil and an edge portion of a diaphragm, and which does not generate resonance.
第１図は従来のダイナミツク形マイクロホンを
示している。第１図において、１は磁石、２は磁
石１の上面に固定されたセンターポール、３は環
状のヨークであり、このヨーク３の内周面と上記
センターポール２との間に環状の磁気ギヤツプが
形成される。４はヨーク３の上面に固定された環
状の支持台、５は振動板であり、この振動板５の
エツジ部６の外周部が上記支持台４に固定されて
いる。７は振動板５の下面に固定された円筒状の
ボイスコイルであり、このボイスコイル７は前記
磁気ギヤツプに配置されている。８，８′はそれ
ぞれ上記ボイスコイル７の両端の引出し線であ
り、この引出し線８，８′は、上記振動板５のエ
ツジ部６とヨーク３上面との間に配置され支持台
４に形成された孔を介して外部に導出されるもの
である。 FIG. 1 shows a conventional dynamic microphone. In FIG. 1, 1 is a magnet, 2 is a center pole fixed to the upper surface of the magnet 1, and 3 is an annular yoke. An annular magnetic gap is connected between the inner peripheral surface of the yoke 3 and the center pole 2. is formed. 4 is an annular support fixed to the upper surface of the yoke 3; 5 is a diaphragm; the outer periphery of the edge portion 6 of the diaphragm 5 is fixed to the support 4; Reference numeral 7 denotes a cylindrical voice coil fixed to the lower surface of the diaphragm 5, and this voice coil 7 is arranged in the magnetic gap. 8 and 8' are lead wires at both ends of the voice coil 7, respectively, and these lead wires 8 and 8' are disposed between the edge portion 6 of the diaphragm 5 and the upper surface of the yoke 3, and are formed on the support base 4. It is led out to the outside through the hole.
第１図において、振動板５に音圧が加わると、
この振動板５およびボイスコイル７が振動し、引
出し線８，８′間に信号が得られるものである。 In FIG. 1, when sound pressure is applied to the diaphragm 5,
The diaphragm 5 and voice coil 7 vibrate, and a signal is obtained between the lead wires 8 and 8'.
しかしながら、上記従来のマイクロホンにおい
ては、引出し線８，８′がエツジ部６とヨーク３
との狭い間隙に配置されるため、振動板５が振動
した際に、引出し線８，８′がエツジ部６又はヨ
ーク３上面に接触し、振動板５の振動モードが変
化し、歪が発生する欠点があつた。また上記従来
例においては、引出し線８，８′がエツジ部６、
ヨーク３に接触しないようにするには細心の注意
を払わなければならず、組立作業が困難であつ
た。また一旦引出し線８，８′とエツジ部６又は
ヨーク３とが接触した場合、振動板５を損傷する
ことなく修理することは困難であつた。 However, in the above conventional microphone, the lead lines 8, 8' are connected to the edge portion 6 and the yoke 3.
When the diaphragm 5 vibrates, the lead wires 8, 8' come into contact with the edge portion 6 or the upper surface of the yoke 3, changing the vibration mode of the diaphragm 5 and causing distortion. There was a drawback. Further, in the above conventional example, the lead lines 8, 8' are connected to the edge portion 6,
Extreme care must be taken to avoid contact with the yoke 3, making assembly difficult. Furthermore, once the lead wires 8, 8' come into contact with the edge portion 6 or the yoke 3, it is difficult to repair the diaphragm 5 without damaging it.
本考案は上記従来の欠点を除去するものであ
り、以下に本考案の一実施例について第２図，第
３図とともに説明する。 The present invention eliminates the above-mentioned drawbacks of the conventional technology, and an embodiment of the present invention will be described below with reference to FIGS. 2 and 3.
第２図，第３図において、９はポリエステル系
フイルム等の高分子フイルムからなる振動板であ
り、エツジ部１０が一体に形成されている。１１
は振動板９の下面に形成された扇形の端子層であ
り、エツジ部１０も含んで８個の端子層１１が対
称に形成されている。上記端子層１１は、例え
ば、振動板となるポリエステル系フイルム９の片
面に蒸着又はメツキにより導電層を形成し、フオ
トエツチングにより導電層を分割して作られ、そ
の後熱成型して図示の形状にするものである。振
動板９の下面に固定されるボイスコイル７の端部
はそれぞれ異なる端子層１１に導電性塗料によつ
て接続される。１２は支持台４上に設けられた出
力端子であり、この出力端子１２と上記端子層１
１との接続は、導電性塗料により、または接着剤
を薄く塗布し加圧して行なう。 In FIGS. 2 and 3, reference numeral 9 denotes a diaphragm made of a polymer film such as a polyester film, and an edge portion 10 is integrally formed therein. 11
is a fan-shaped terminal layer formed on the lower surface of the diaphragm 9, and eight terminal layers 11 including the edge portion 10 are formed symmetrically. The terminal layer 11 is made, for example, by forming a conductive layer on one side of the polyester film 9 that will serve as the diaphragm by vapor deposition or plating, dividing the conductive layer by photo-etching, and then thermoforming it into the shape shown in the figure. It is something to do. The ends of the voice coil 7 fixed to the lower surface of the diaphragm 9 are connected to different terminal layers 11 using conductive paint. 12 is an output terminal provided on the support base 4, and this output terminal 12 and the terminal layer 1
The connection with 1 is made using conductive paint or by applying a thin layer of adhesive and applying pressure.
このように、本考案では、振動板９の下面に端
子層１１を形成し、この端子層１１を介してボイ
スコイル７の引出しを行なうため、従来例のよう
に、引出し線とエツジ部又はヨークとの接触によ
る歪の発生が防止される利点を有する。また本案
では振動板の中心点を中心に端子層を複数個対称
に形成するため、振動板の質量のバランスがとれ
共振が発生しないとともに、端子層の面積が広い
ため、端子層が薄くても抵抗分が小さくなり出力
が低下しない利点を有する。 As described above, in the present invention, the terminal layer 11 is formed on the lower surface of the diaphragm 9, and the voice coil 7 is drawn out through this terminal layer 11. Therefore, unlike the conventional example, the terminal layer 11 is formed on the lower surface of the diaphragm 9. This has the advantage of preventing distortion from occurring due to contact with the material. In addition, in this proposal, multiple terminal layers are formed symmetrically around the center point of the diaphragm, so the mass of the diaphragm is balanced and resonance does not occur, and the area of the terminal layer is large, so even if the terminal layer is thin. This has the advantage that the resistance is small and the output does not decrease.
また、第３図に示すように振動板の中央部まで
端子層を形成した場合には振動板の剛性が増大
し、分割共振が防止できるものである。 Further, when the terminal layer is formed up to the center of the diaphragm as shown in FIG. 3, the rigidity of the diaphragm increases and split resonance can be prevented.
第１図は従来のダイナミツク形マイクロホンの
要部の断面図、第２図は本考案の一実施例におけ
るダイナミツク形マイクロホンの要部の断面図、
第３図は同マイクロホンの振動板の下面図であ
る。
１……磁石、２……センターポール、３……ヨ
ーク、４……支持台、９……振動板、１０……エ
ツジ部、１１……端子層、１２……出力端子。
FIG. 1 is a sectional view of the main parts of a conventional dynamic microphone, and FIG. 2 is a sectional view of the main parts of a dynamic microphone according to an embodiment of the present invention.
FIG. 3 is a bottom view of the diaphragm of the microphone. DESCRIPTION OF SYMBOLS 1... Magnet, 2... Center pole, 3... Yoke, 4... Support stand, 9... Vibration plate, 10... Edge portion, 11... Terminal layer, 12... Output terminal.
Claims (1)
イスコイルを固定するダイナミツク形マイクロホ
ンにおいて、高分子フイルムからなる振動板の下
面に蒸着又はメツキにより複数個の端子層を上記
振動板の中心点を中心に対称にかつ前記振動板の
振動モードを変えないように薄くかつ広く形成
し、上記端子層にボイスコイルを接続してなるダ
イナミツク形マイクロホン。 In a dynamic microphone in which a voice coil is fixed to the lower surface of a diaphragm with an integrally formed edge portion, a plurality of terminal layers are attached to the lower surface of the diaphragm made of polymer film by vapor deposition or plating at the center point of the diaphragm. A dynamic microphone formed thin and wide symmetrically around the center so as not to change the vibration mode of the diaphragm, and having a voice coil connected to the terminal layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6695380U JPS6211118Y2 (en) | 1980-05-15 | 1980-05-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6695380U JPS6211118Y2 (en) | 1980-05-15 | 1980-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56167696U JPS56167696U (en) | 1981-12-11 |
| JPS6211118Y2 true JPS6211118Y2 (en) | 1987-03-16 |
Family
ID=29660998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6695380U Expired JPS6211118Y2 (en) | 1980-05-15 | 1980-05-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6211118Y2 (en) |
-
1980
- 1980-05-15 JP JP6695380U patent/JPS6211118Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56167696U (en) | 1981-12-11 |
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