JPH06327096A - Electroacoustic transducer - Google Patents
Electroacoustic transducerInfo
- Publication number
- JPH06327096A JPH06327096A JP30980493A JP30980493A JPH06327096A JP H06327096 A JPH06327096 A JP H06327096A JP 30980493 A JP30980493 A JP 30980493A JP 30980493 A JP30980493 A JP 30980493A JP H06327096 A JPH06327096 A JP H06327096A
- Authority
- JP
- Japan
- Prior art keywords
- voice coil
- coil
- bobbin
- voice
- diaphragm
- 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
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えばスピーカやヘッ
ドホン等、ボイスコイルを有する電気音響変換器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electroacoustic transducer having a voice coil such as a speaker and headphones.
【０００２】[0002]
【従来の技術】まず、図７及び図８は従来の一般的なス
ピーカの要部を示すものである。2. Description of the Related Art First, FIGS. 7 and 8 show the essential parts of a conventional general speaker.
【０００３】即ち、銅線等からなる導電性を有する線材
１がコイル状に巻回されてボイスコイル２が形成され、
このコイル２が円筒状をなすコイルボビン３の外周下部
に取付けられている。線材１は図７においては丸線、図
８においてはほぼ矩形状をなすリボン線であり、接着剤
４によって互いに接着されかつボビン３に固着されてい
る。そしてコイル２は磁気回路５の空隙６内に配置され
ている。またボビン３の上端には振動板７が接着され、
この振動板７とコイル２との間でボビン３の外周には、
そのボビン３を補強するための補強材８が接着されてい
る。そしてコイル２に音声電流が流されると、磁気回路
５の空隙６に生じている磁束内でコイル２が上下に振動
し、ボビン３を介して振動板７が駆動される。That is, a conductive wire 1 made of a copper wire or the like is wound in a coil shape to form a voice coil 2,
The coil 2 is attached to the lower part of the outer circumference of a coil bobbin 3 having a cylindrical shape. The wire 1 is a round wire in FIG. 7 and a ribbon wire in a substantially rectangular shape in FIG. 8, which are adhered to each other by an adhesive 4 and fixed to the bobbin 3. The coil 2 is arranged in the space 6 of the magnetic circuit 5. Further, the vibration plate 7 is adhered to the upper end of the bobbin 3,
Between the vibrating plate 7 and the coil 2, on the outer circumference of the bobbin 3,
A reinforcing material 8 for reinforcing the bobbin 3 is bonded. When an audio current is applied to the coil 2, the coil 2 vibrates up and down within the magnetic flux generated in the air gap 6 of the magnetic circuit 5, and the diaphragm 7 is driven via the bobbin 3.
【０００４】[0004]
【発明が解決しようとする課題】ところで、この種のス
ピーカにおいては、コイル２がボビン３を介して振動板
７を駆動する時に、コイル２とボビン３との間での駆動
力の伝達が極めて重要になる。By the way, in this type of speaker, when the coil 2 drives the diaphragm 7 via the bobbin 3, the driving force is extremely transmitted between the coil 2 and the bobbin 3. Becomes important.
【０００５】しかしながら、上述した従来の構造では、
基本的にコイル２はボビン３に点で接触しており、線材
１の周辺の接着剤４によってそれらの接触面積が拡げら
れているに過ぎない。これにより、コイル２とボビン３
との運動を微視的に見ると、これらが一体となって振動
しているとは言い難い場合があると想像される。またコ
イル２に発生する熱によって接着剤４が剥離し易く、こ
の点からもコイル２とボビン３とが一体とは言い難い。
つまり、コイル２からボビン３を介して振動板７に駆動
力が一対一の対応で伝達されないことが予想される。However, in the above-mentioned conventional structure,
Basically, the coil 2 is in point contact with the bobbin 3, and the contact area is expanded only by the adhesive 4 around the wire 1. As a result, the coil 2 and the bobbin 3
From a microscopic view of the movements of and, it is conceivable that it may be difficult to say that these are vibrating together. Further, the adhesive 4 is easily peeled off by the heat generated in the coil 2, and it is difficult to say that the coil 2 and the bobbin 3 are integrated from this point as well.
That is, it is expected that the driving force is not transmitted from the coil 2 to the diaphragm 7 via the bobbin 3 in a one-to-one correspondence.
【０００６】さらに、線材１をコイル状に巻回した構造
は、図７に示す丸線の場合は巻回させ易いが径方向の機
械的強度が弱く、図８に示すリボン線の場合は径方向の
機械的強度はあるが非常に巻回させにくい問題がある。Further, the structure in which the wire 1 is wound in a coil shape is easy to wind in the case of the round wire shown in FIG. 7, but the mechanical strength in the radial direction is weak, and in the case of the ribbon wire shown in FIG. There is a mechanical strength in the direction, but there is a problem that it is very difficult to wind.
【０００７】そこで本発明は、ボイスコイルと振動板と
の間で駆動力を正確に伝達できるようにし、しかもボイ
スコイルは巻回させ易くかつ機械的強度を強くできるよ
うにするものである。Therefore, the present invention enables accurate transmission of the driving force between the voice coil and the diaphragm, and further makes it easy to wind the voice coil and increase the mechanical strength.
【０００８】[0008]
【課題を解決するための手段】本発明は、導電性を有す
る帯状金属箔の片面側に絶縁性のある接着剤の層を設
け、上記金属箔をこの接着剤層と共に同心円状に巻回積
層して形成したボイスコイルと、振動板が取付けられる
と共に、上記ボイスコイルの幅方向がこの振動板の振動
方向と平行となるようにこのボイスコイルが接着剤にて
取付けられたコイルボビンと、上記ボイスコイルと交叉
して延びる磁気回路とで電気音響変換器を構成した。According to the present invention, an insulating adhesive layer is provided on one side of an electrically conductive strip-shaped metal foil, and the metal foil is concentrically wound and laminated together with the adhesive layer. The voice coil formed by the above method and the diaphragm are attached, and the voice coil is attached by an adhesive so that the width direction of the voice coil is parallel to the vibration direction of the diaphragm. An electroacoustic transducer was constructed with a coil and a magnetic circuit extending crosswise.
【０００９】なお上記ボイスの上端面は、上記コイルボ
ビンの下端面に接着剤でかつ同心状に固着されるのがよ
い。また上記ボイスコイルが上記コイルボビンの外周に
装着されるとき、上記ボイスコイルの上端面が上記コイ
ルボビンの外周に形成された段部と当接するのがよい。The upper end surface of the voice is preferably fixed to the lower end surface of the coil bobbin with an adhesive and concentrically. Further, when the voice coil is mounted on the outer circumference of the coil bobbin, it is preferable that the upper end surface of the voice coil abuts on the stepped portion formed on the outer circumference of the coil bobbin.
【００１０】また本発明は、導電性を有する帯状の金属
箔の片面側に絶縁性のある接着剤の層を設け、上記金属
箔をこの接着剤層と共に同心円状に巻回積層して形成し
たボイスコイルと、このボイスコイルの幅方向がその振
動方向と平行となるように、ボイスコイルの上端面側を
介してこのボイスコイルを固着させた振動板と、上記ボ
イスコイルと交叉して延びる磁気回路とで電気音響変換
器を構成した。Further, according to the present invention, a layer of an insulating adhesive is provided on one side of a conductive strip-shaped metal foil, and the metal foil is concentrically wound and laminated together with the adhesive layer. A voice coil, a diaphragm to which the voice coil is fixed via the upper end surface side of the voice coil so that the width direction of the voice coil is parallel to the vibration direction thereof, and a magnetic field extending across the voice coil. An electroacoustic transducer was constructed with the circuit.
【００１１】[0011]
【作用】金属箔から成る本発明のボイスコイルは、その
巻回軸が振動板の振動方向とほゞ一致し、また積層され
たこの金属箔の層間および、コイルボビンまたは振動板
とこの金属箔との間は面で対向するから、ボイスコイル
の駆動力は振動板に極めて正確に伝達される。In the voice coil of the present invention made of a metal foil, the winding axis thereof is substantially coincident with the vibration direction of the diaphragm, and the laminated layers of the metal foil and the coil bobbin or the diaphragm and the metal foil are laminated. The driving force of the voice coil is transmitted to the diaphragm very accurately because the two faces face each other.
【００１２】しかも、帯状の金属箔をコイル状に積層さ
せたボイスコイルの構造は、極めて巻回し易いだけでな
く、径方向の機械的強度も非常に強くなる。Moreover, the structure of the voice coil in which the strip-shaped metal foils are laminated in a coil shape is not only very easy to wind, but also has a great radial mechanical strength.
【００１３】[0013]
【実施例】以下、本発明の実施例を図１〜図５によって
説明する。Embodiments of the present invention will be described below with reference to FIGS.
【００１４】まず、図１〜図３は第１実施例を示すもの
である。図２のスピーカ全体図において、円筒状をなす
コイルボビン１１の前端部にコーン状の振動板１２が接
着され、その振動板１２の外周部はエッジ１３によって
フレーム１４に取付けられている。なおコイルボビン１
１は例えば、紙、ガラス繊維入樹脂、軽金属等によって
形成され、振動板１２は例えば紙、カーボン繊維入高分
子材料等によって形成されている。そしてコイルボビン
１１の外周下部にはボイスコイル１５が取付けられてい
る。そしてフレーム１４の下端にはトッププレート１６
とボトムプレート１７とマグネット１８とからなる磁気
回路１９が取付けられ、ボトムプレート１７の中心のポ
ール２０とトッププレート１６との間の空隙２１内に前
記ボイスコイル１５が、上記磁気回路１９と交叉するよ
うにして配置されている。First, FIGS. 1 to 3 show a first embodiment. In the speaker overall view of FIG. 2, a cone-shaped diaphragm 12 is bonded to the front end of a cylindrical coil bobbin 11, and the outer periphery of the diaphragm 12 is attached to a frame 14 by an edge 13. Coil bobbin 1
1 is made of, for example, paper, resin containing glass fiber, light metal, etc., and the diaphragm 12 is made of, for example, paper, polymer material containing carbon fiber, etc. A voice coil 15 is attached to the lower outer periphery of the coil bobbin 11. And at the lower end of the frame 14, a top plate 16
A magnetic circuit 19 including a bottom plate 17 and a magnet 18 is attached, and the voice coil 15 intersects with the magnetic circuit 19 in a gap 21 between the pole 20 at the center of the bottom plate 17 and the top plate 16. Are arranged in this way.
【００１５】ところで、図１及び図３に示すように、こ
のボイスコイル１５は、導電性を有する帯状の薄い金属
箔２５を、絶縁性を有する接着剤２６を介してコイル状
に積層させたものである。そしてボイスコイル１５の幅
方向がコイルボビン１１の振動方向と平行となるよう
に、そのボイスコイル１５が接着剤２７によってコイル
ボビン１１の外周に取付けられている。なお金属箔２５
は例えば銅箔が用いられ、その厚さは１５μｍ〜７０μ
ｍ程度の間で適宜選択される。また絶縁性を有する接着
剤２６の層の厚さは５μｍ程度であり、この接着剤２６
は耐熱性を有する方がよい。またコイルボビン１１に取
付けるための接着剤２７は必ずしも絶縁性を有する必要
はないが、接着剤２６と同様のものでもよい。By the way, as shown in FIG. 1 and FIG. 3, the voice coil 15 is obtained by laminating a thin conductive metal foil 25 in a coil shape in a coil shape with an adhesive 26 having an insulating property. Is. The voice coil 15 is attached to the outer circumference of the coil bobbin 11 with an adhesive 27 so that the width direction of the voice coil 15 is parallel to the vibration direction of the coil bobbin 11. Note that the metal foil 25
Is, for example, copper foil, and its thickness is 15 μm to 70 μm.
It is appropriately selected within the range of about m. The thickness of the insulating adhesive 26 layer is about 5 μm.
Should have heat resistance. Further, the adhesive 27 for attaching to the coil bobbin 11 does not necessarily have insulating properties, but may be the same as the adhesive 26.
【００１６】なお、ボイスコイル１５の作製及びコイル
ボビン１１への取付けは、次の順序で行われる。即ち図
３に示すように、まず金属箔２５の片面に接着剤２６の
層を塗布等によって形成する。そしてこれを所定のイン
ピーダンスが得られる内径及び外径となるように同心円
に巻回積層する。かくして金属箔２５は、接着剤２６に
よって互いに絶縁されかつ固着される。次に積層された
金属箔２５を切断することによって所定幅のボイスコイ
ル１５が得られる。このボイスコイル１５の内周側にコ
イルボビン１１を挿入して固着させる。なおコイルボビ
ン１１はスリット２８を有する突き当て構造となってお
り、ボイスコイル１５への挿入後にその内周面に密着さ
せる。そして金属箔２５の最外周部と最内周部とに引出
リード線２９、３０を半田付けによって取付ける。なお
最内周部の引出リード線３０はスリット２８に沿わせて
外部に導出させる。The voice coil 15 is manufactured and attached to the coil bobbin 11 in the following order. That is, as shown in FIG. 3, first, a layer of the adhesive 26 is formed on one surface of the metal foil 25 by coating or the like. Then, this is wound and laminated in concentric circles so as to have an inner diameter and an outer diameter that can obtain a predetermined impedance. The metal foils 25 are thus insulated and fixed to one another by the adhesive 26. Next, the laminated metal foil 25 is cut to obtain the voice coil 15 having a predetermined width. The coil bobbin 11 is inserted and fixed to the inner peripheral side of the voice coil 15. The coil bobbin 11 has a butting structure having a slit 28, and is closely attached to the inner peripheral surface of the voice coil 15 after being inserted into the voice coil 15. Then, the lead wires 29 and 30 are attached to the outermost peripheral portion and the innermost peripheral portion of the metal foil 25 by soldering. The lead wire 30 at the innermost peripheral portion is guided to the outside along the slit 28.
【００１７】上述のように構成されたスピーカによれ
ば、ボイスコイル１５に音声電流が流されると、磁気回
路１９の空隙２１に生じている磁束内でボイスコイル１
５が上下に振動し、コイルボビン１１を介して振動板１
２が駆動される。According to the speaker constructed as described above, when the voice current is passed through the voice coil 15, the voice coil 1 is generated within the magnetic flux generated in the gap 21 of the magnetic circuit 19.
5 vibrates up and down, and the vibration plate 1 passes through the coil bobbin 11.
2 is driven.
【００１８】ところでこの際、ボイスコイル１５は振動
方向に沿って金属箔２５が連続しており、しかも積層さ
れた金属箔２５どうし及びコイルボビン１１との接着は
大きな面接触で極めて強固となっている。従って、ボイ
スコイル１５及びコイルボビン１１が一体で振動し、ボ
イスコイル１５からコイルボビン１１を介して振動板１
２へ駆動力が極めて正確に伝達されることになる。At this time, in the voice coil 15, the metal foils 25 are continuous along the vibration direction, and the adhesion between the laminated metal foils 25 and the coil bobbin 11 is extremely strong due to the large surface contact. . Therefore, the voice coil 15 and the coil bobbin 11 vibrate integrally, and the diaphragm 1 is vibrated from the voice coil 15 via the coil bobbin 11.
The driving force will be transmitted to 2 very accurately.
【００１９】しかも、このボイスコイル１５は、金属箔
２５をコイル状に積層させるので、その巻回は極めて容
易であるだけでなく、径方向の機械的強度も非常に強い
ものである。Moreover, since the voice coil 15 is formed by laminating the metal foil 25 in a coil shape, it is not only very easy to wind but also has very strong radial mechanical strength.
【００２０】次に、図４は第２実施例を示すものであ
る。これは、前述と同様な積層構造のボイスコイル１５
をコイルボビン１１へ取付ける際に、コイルボビン１１
の下端１１ａにボイスコイル１５の上端１５ａを当接さ
せ、その周囲を接着剤３５によって固定させたものであ
る。Next, FIG. 4 shows a second embodiment. This is a voice coil 15 having a laminated structure similar to that described above.
The coil bobbin 11 when attaching the
The upper end 15a of the voice coil 15 is brought into contact with the lower end 11a of the above, and the periphery thereof is fixed with an adhesive 35.
【００２１】この第２実施例によれば、ボイスコイル１
５の上端１５ａをコイルボビン１１の下端１１ａに当接
させて直付けしているので、振動方向への駆動力の伝達
がさらに直接的となる。According to the second embodiment, the voice coil 1
Since the upper end 15a of No. 5 is directly attached by contacting the lower end 11a of the coil bobbin 11, the driving force in the vibration direction can be more directly transmitted.
【００２２】即ち、図７及び図８で前述した従来のボイ
スコイル２では、コイルボビン３がコイル２の内側（ま
たは外側）にあり、磁気空隙６の有効利用と言う立場か
ら、コイルボビン３を充分に厚くすることができない。
さらにボイスコイル２として線材１を巻回させているた
め、ボイスコイル２の上端を平面にすることができず、
補強材８を貼付ける時にはコイル２の上端と補強材６と
の間に必ず隙間９ができる。すなわち微視的な見方をす
れば、これが前者の事実と相俟ってその隙間９の部分を
薄いボビン３のみで接続させることになると見られる。
これにより、その隙間９の部分の強度を充分に向上させ
ることが要求される。That is, in the conventional voice coil 2 described above with reference to FIGS. 7 and 8, since the coil bobbin 3 is inside (or outside) the coil 2, the coil bobbin 3 is sufficiently used from the standpoint of effective use of the magnetic gap 6. It cannot be thickened.
Furthermore, since the wire rod 1 is wound as the voice coil 2, the upper end of the voice coil 2 cannot be made flat,
When the reinforcing material 8 is attached, a gap 9 is always formed between the upper end of the coil 2 and the reinforcing material 6. That is, from a microscopic point of view, it is considered that, in combination with the former fact, the gap 9 is connected only by the thin bobbin 3.
Therefore, it is required to sufficiently improve the strength of the gap 9.
【００２３】ところで第２実施例によれば、ボイスコイ
ル１５とコイルボビン１１とはその接合部を完全に面接
合とすることができ、さらにコイルボビン１１を充分に
厚くすることができる上に、突き合わせのないコイルボ
ビン１１を使用することもできる。従って、駆動力の伝
達が極めて正確となり、コイルボビン１１の強度を充分
に向上させることができる。By the way, according to the second embodiment, the voice coil 15 and the coil bobbin 11 can be completely surface-bonded to each other, and the coil bobbin 11 can be made sufficiently thick, and in addition, they can be abutted against each other. It is also possible to use a coil bobbin 11 without the coil bobbin. Therefore, the transmission of the driving force becomes extremely accurate, and the strength of the coil bobbin 11 can be sufficiently improved.
【００２４】次に、図５は第３実施例を示すものであ
る。これは、前述と同様な積層構造のボイスコイル１５
をコイルボビン１１の外周へ取付ける際、コイルボビン
１１に段部３７を設け、この段部３７にボイスコイル１
５の上端１５ａを当接させたものである。Next, FIG. 5 shows a third embodiment. This is a voice coil 15 having a laminated structure similar to that described above.
When the coil bobbin 11 is attached to the outer periphery of the coil bobbin 11, a step portion 37 is provided on the coil bobbin 11, and the voice coil 1
The upper end 15a of No. 5 is abutted.
【００２５】この第３実施例によれば、ボイスコイル１
５の上端１５ａをコイルボビン１１の段部３７に当接さ
せているので、第１実施例のようにボイスコイル１５を
コイルボビン１１の外周に取付ける構造でありながら、
第２実施例のようにボイスコイル１５からコイルボビン
１１への駆動力の伝達をより正確にすることができる。According to the third embodiment, the voice coil 1
Since the upper end 15a of the coil 5 is brought into contact with the stepped portion 37 of the coil bobbin 11, the voice coil 15 is attached to the outer periphery of the coil bobbin 11 as in the first embodiment.
As in the second embodiment, the transmission of the driving force from the voice coil 15 to the coil bobbin 11 can be made more accurate.
【００２６】次に図６には、ボイスコイル１５を直接、
振動板１２に取付けた電気音響変換器の実施例を示す。
これは、特に小型のイヤホン型ヘッドホンに多用される
ものであり、コイルボビンを用いずに、前述と同様な積
層構造のボイスコイル１５が、振動板１２とエッジ１３
との間に直接取付けられている。かくして積層構造のボ
イスコイル１５は、振動方向に沿って一体でかつ径方向
の機械的強度が充分に強くなるため、コイルボビンを用
いなくても、ボイスコイル１５から振動板１２へ駆動力
を正確に伝達することができる。Next, in FIG. 6, the voice coil 15 is directly connected to
An example of the electroacoustic transducer attached to the diaphragm 12 will be shown.
This is particularly frequently used for small earphone type headphones, and a voice coil 15 having a laminated structure similar to that described above is used for a diaphragm 12 and an edge 13 without using a coil bobbin.
Installed directly between and. Thus, since the voice coil 15 having the laminated structure is integrated in the vibration direction and has a sufficiently large mechanical strength in the radial direction, the driving force from the voice coil 15 to the diaphragm 12 can be accurately obtained without using the coil bobbin. Can be communicated.
【００２７】以上、本発明の実施例に付き述べたが、本
発明は実施例に限定されることなく、本発明の技術的思
想に基づいて各種の有効な変更が可能である。Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments and various effective modifications can be made based on the technical idea of the present invention.
【００２８】例えば、導電性を有する金属箔及び絶縁性
を有する接着剤は、各種の有効な材質を用いることがで
きる。For example, various effective materials can be used for the conductive metal foil and the insulating adhesive.
【００２９】なお本発明は、実施例で示したスピーカ、
ヘッドホンに限られることなく、振動板でボイスコイル
を駆動して音声電流を発生させるようにした、マイクロ
ホン等にも適用可能である。The present invention is based on the speaker shown in the embodiment,
The present invention is not limited to headphones, but can be applied to a microphone or the like in which a voice coil is driven by a diaphragm to generate a voice current.
【００３０】[0030]
【発明の効果】本発明は上述のような構成であるから、
ボイスコイルと振動板との間に駆動力を一対一の対応で
伝達させることができる。従って、駆動力の伝達を極め
て正確に行うことができ、電気音響変換の特性を著しく
向上させることができる。Since the present invention has the above-mentioned structure,
The driving force can be transmitted between the voice coil and the diaphragm in a one-to-one correspondence. Therefore, the driving force can be transmitted extremely accurately, and the characteristics of electroacoustic conversion can be significantly improved.
【００３１】しかも、金属箔を積層させてなるボイスコ
イルは、非常に簡単に巻回ができるだけでなく、径方向
の機械的強度も非常に強くすることができる。従って、
製造が非常に容易である上に、精度も極めて向上する。Moreover, the voice coil formed by laminating the metal foils can be wound very easily, and the mechanical strength in the radial direction can be made very strong. Therefore,
It is very easy to manufacture and the accuracy is greatly improved.
【図１】電気音響変換器の要部断面図FIG. 1 is a sectional view of an essential part of an electroacoustic transducer.
【図２】電気音響変換器の断面図FIG. 2 is a sectional view of an electroacoustic transducer.
【図３】ボイスコイルとコイルボビンの分解斜視図FIG. 3 is an exploded perspective view of a voice coil and a coil bobbin.
【図４】第２実施例の要部断面図FIG. 4 is a sectional view of an essential part of the second embodiment.
【図５】第３実施例の要部断面図FIG. 5 is a cross-sectional view of the essential parts of the third embodiment.
【図６】振動板にボイスコイルを直接取付けた電気音響
変換器の要部断面図FIG. 6 is a sectional view of an essential part of an electroacoustic transducer in which a voice coil is directly attached to a diaphragm.
１１ コイルボビン １１ａ 下端 １２ 振動板 １５ ボイスコイル １５ａ 上端 １９ 磁気回路 ２５ 金属箔 ２６ 接着剤 ２７ 接着剤 ３５ 接着剤 ３７ 段部 11 coil bobbin 11a lower end 12 diaphragm 15 voice coil 15a upper end 19 magnetic circuit 25 metal foil 26 adhesive 27 adhesive 35 adhesive 37 step
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年２月２５日[Submission date] February 25, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図７[Name of item to be corrected] Figure 7
【補正方法】追加[Correction method] Added
【補正内容】[Correction content]
【図７】 コイルが円断面の線材で形成された従来の電
気音響変換器の要部断面図FIG. 7 is a sectional view of a main part of a conventional electroacoustic transducer in which a coil is formed of a wire having a circular cross section.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図８[Correction target item name] Figure 8
【補正方法】追加[Correction method] Added
【補正内容】[Correction content]
【図８】 コイルがほゞ矩形状断面の線材で形成された
従来の電気音響変換器の要部断面図FIG. 8 is a cross-sectional view of a main part of a conventional electroacoustic transducer in which a coil is formed of a wire having a substantially rectangular cross section.
Claims (4)
性のある接着剤の層を設け、上記金属箔をこの接着剤層
と共に同心円状に巻回積層して形成したボイスコイル
と、 振動板が取付けられると共に、上記ボイスコイルの幅方
向がこの振動板の振動方向と平行となるようにこのボイ
スコイルが接着剤にて取付けられたコイルボビンと、 上記ボイスコイルと交叉して延びる磁気回路とを備えた
電気音響変換器。1. A voice coil formed by providing an insulating adhesive layer on one side of a conductive strip-shaped metal foil, and concentrically winding and laminating the metal foil together with the adhesive layer. A vibration bobbin is attached, and a coil bobbin to which the voice coil is attached by an adhesive so that the width direction of the voice coil is parallel to the vibration direction of the vibrating plate, and a magnetic circuit extending across the voice coil. And an electroacoustic transducer.
ビンの下端面に接着剤でかつ同心状に固着させた請求項
１記載の変換器。2. The converter according to claim 1, wherein the upper end surface of the voice coil is fixed to the lower end surface of the coil bobbin with an adhesive and in a concentric manner.
周に装着されるとき、上記ボイスコイルの上端面が上記
コイルボビンの外周に形成された段部と当接する請求項
１記載の変換器。3. The converter according to claim 1, wherein when the voice coil is mounted on the outer circumference of the coil bobbin, the upper end surface of the voice coil abuts on a step formed on the outer circumference of the coil bobbin.
縁性のある接着剤の層を設け、上記金属箔をこの接着剤
層と共に同心円状に巻回積層して形成したボイスコイル
と、 このボイスコイルの幅方向がその振動方向と平行となる
ように、ボイスコイルの上端面側を介してこのボイスコ
イルを固着させた振動板と、 上記ボイスコイルと交叉して延びる磁気回路とを備えた
電気音響変換器。4. A voice coil formed by providing an insulating adhesive layer on one side of a conductive band-shaped metal foil, and concentrically winding and laminating the metal foil together with the adhesive layer. , A vibration plate to which the voice coil is fixed via the upper end surface side of the voice coil so that the width direction of the voice coil is parallel to the vibration direction, and a magnetic circuit extending crossing the voice coil. Equipped with electro-acoustic transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30980493A JPH06327096A (en) | 1993-11-16 | 1993-11-16 | Electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30980493A JPH06327096A (en) | 1993-11-16 | 1993-11-16 | Electroacoustic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06327096A true JPH06327096A (en) | 1994-11-25 |
Family
ID=17997449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30980493A Pending JPH06327096A (en) | 1993-11-16 | 1993-11-16 | Electroacoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06327096A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210015928A (en) * | 2018-06-26 | 2021-02-10 | 아키토 하나다 | Voice coil diaphragm |
| US11418886B2 (en) * | 2019-05-06 | 2022-08-16 | Sound Solutions International Co., Ltd. | Electrodynamic acoustic transducer with a high density coil and production method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5715186A (en) * | 1980-06-27 | 1982-01-26 | Hitachi Shipbuilding Eng Co | Soilidificationproof device of transporting pipe for low quality fuel oil |
| JPS5772814A (en) * | 1980-08-22 | 1982-05-07 | Gandoru Hoorudeingusu Pty Ltd | Method and apparatus for welding thermoplastic material |
| JPS59150839A (en) * | 1983-02-14 | 1984-08-29 | 渡辺 次郎 | Apparatus and method for taking water only from arbitrary underground water layer in well |
-
1993
- 1993-11-16 JP JP30980493A patent/JPH06327096A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5715186A (en) * | 1980-06-27 | 1982-01-26 | Hitachi Shipbuilding Eng Co | Soilidificationproof device of transporting pipe for low quality fuel oil |
| JPS5772814A (en) * | 1980-08-22 | 1982-05-07 | Gandoru Hoorudeingusu Pty Ltd | Method and apparatus for welding thermoplastic material |
| JPS59150839A (en) * | 1983-02-14 | 1984-08-29 | 渡辺 次郎 | Apparatus and method for taking water only from arbitrary underground water layer in well |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210015928A (en) * | 2018-06-26 | 2021-02-10 | 아키토 하나다 | Voice coil diaphragm |
| US11418886B2 (en) * | 2019-05-06 | 2022-08-16 | Sound Solutions International Co., Ltd. | Electrodynamic acoustic transducer with a high density coil and production method thereof |
| US11716572B2 (en) | 2019-05-06 | 2023-08-01 | Sound Solutions International Co., Ltd. | Method of production of an electrodynamic acoustic transducer with a high density coil |
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