JP2000324595A - Voice coil for speaker and its production - Google Patents

Voice coil for speaker and its production

Info

Publication number
JP2000324595A
JP2000324595A JP13174199A JP13174199A JP2000324595A JP 2000324595 A JP2000324595 A JP 2000324595A JP 13174199 A JP13174199 A JP 13174199A JP 13174199 A JP13174199 A JP 13174199A JP 2000324595 A JP2000324595 A JP 2000324595A
Authority
JP
Japan
Prior art keywords
voice coil
coil
wound
winding
speaker
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.)
Granted
Application number
JP13174199A
Other languages
Japanese (ja)
Other versions
JP3612575B2 (en
Inventor
Shinji Toyooka
信次 豊岡
Teruo Doi
輝夫 土井
Shinya Mizone
信也 溝根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OKAYAMA MORITETSU DENKI KK
OKAYAMA MORITETSU ELECTRIC
Panasonic Holdings Corp
Original Assignee
OKAYAMA MORITETSU DENKI KK
OKAYAMA MORITETSU ELECTRIC
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by OKAYAMA MORITETSU DENKI KK, OKAYAMA MORITETSU ELECTRIC, Matsushita Electric Industrial Co Ltd filed Critical OKAYAMA MORITETSU DENKI KK
Priority to JP13174199A priority Critical patent/JP3612575B2/en
Publication of JP2000324595A publication Critical patent/JP2000324595A/en
Application granted granted Critical
Publication of JP3612575B2 publication Critical patent/JP3612575B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve the space factor of a magnet in a magnetic gap and to enhance the efficiency of the magnet by winging a coil conductor around a voice coil bobbin and pressing the coil front surface from the outside in a radial direction and molding it to change its volume. SOLUTION: The coil conductor 1 is wound around the voice coil bobbin 15. Then the winding front surface of the coil part which is formed as it is without separation from a winding core 39 is pressurized from the outside in the radius direction, it is compression-molded and the volume is deformed. In this case, the voice coil bobbin 15 of a ring shape film is wound around the winding core 39 of a winding wire machine, an outer surface is coated by an insulating material film while rotating a winding core driving shaft and the core wire of the conductor 1 with a circular cross section, where the outside is coated by an adhesive, is wound and fixed onto the bobbin in its lowest layer. Then, on it, winding is executed by required times to be multiple layers and winding layers are formed. Thus, the coil conductor 1 is wound and, then, the winding front surface is pressurized in the radius direction. Then compression-molding is executed to deform the volume.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、従来のスピーカ１
００’のボイスコイルにおいて、巻着した導線１’の形
状を圧縮変形して、磁気空隙４２’内におけるマグネッ
ト４１のスペースファクタを向上させて、マグネット４
１の磁気使用効率を著しく高めたボイスコイルに関する
ものである。The present invention relates to a conventional speaker 1
In the voice coil 00 ', the space factor of the magnet 41 in the magnetic gap 42' is improved by compressing and deforming the shape of the wound wire 1 '.
1 relates to a voice coil whose magnetic use efficiency is significantly improved.

【０００２】[0002]

【従来の技術】従来この種のスピーカ用ボイスコイル
は、図９，図１０に示した様に、外面を絶縁材皮膜２ａ
で被覆し、その外側を接着剤２ｂを塗着した断面円形の
芯材１ａ’を有する導線１’を、ボビン１５’に上下２
層以上に巻着固着したものである。従来一般のスピーカ
１００’のボイスコイルは、紙または、樹脂のフィルム
を円環状に形成してボビン１５’を形成して、巻き線機
５０の巻き芯３９に固定し、その上に、芯線１ａ’の表
面に絶縁皮膜２ａを被覆し、その表面に接着剤塗膜２ｂ
を塗着した導線１’を必要回数多層に巻回して形成す
る。2. Description of the Related Art As shown in FIGS. 9 and 10, a conventional voice coil for a speaker of this type has an outer surface covered with an insulating film 2a.
A lead wire 1 ′ having a core material 1a ′ having a circular cross section and the outside of which is coated with an adhesive 2b is
It is wound and fixed on more than one layer. The voice coil of the conventional general speaker 100 'is formed of a paper or resin film in an annular shape to form a bobbin 15', which is fixed to a winding core 39 of a winding machine 50. 'Is coated with an insulating film 2a and the surface is coated with an adhesive film 2b.
Is formed by winding the conducting wire 1 ′ coated with a necessary number of times in multiple layers.

【０００３】しかして後必要に応じて、巻回したコイル
１０’を、巻線機の巻芯３９から離脱することなく、加
熱キュアリングを施して、接着剤２ｂの反応を完結せし
めて、固化する。このようにして、仕上げたスピーカ１
００’のボイスコイルは、磁気回路４６’の磁気空隙長
Ｌ’の円環状の磁気空隙４２’内に保持され、ボイスコ
イルボビン１５’の一端に振動板４３を接着する。ボイ
スコイルの導線１’の巻き始め１０ａ’、巻き終わり１
０ｂ’の両端をボビン１５’及び振動板４３の外側を這
わせて、振動板４３の中腹に取り付けた中継ハトメ２１
に接続し、可撓線２２の一端を前記中継ハトメ２１に接
続し、前記可撓線２２の他端をフレーム１０１の中腹部
に取り付けた外部接続用ラグ端子２３に接続してある。
しかして、ラグ端子２３から電気入力を接続して入力し
て、スピーカ１００’のボイスコイルを軸方向に振動さ
せ、その振動を振動板４３に伝達して、音声を発生する
ものである。[0003] Then, if necessary, the wound coil 10 'is heated and cured without being separated from the winding core 39 of the winding machine to complete the reaction of the adhesive 2b and solidify. I do. The speaker 1 thus finished
The voice coil 00 ′ is held in an annular magnetic gap 42 ′ having a magnetic gap length L ′ of a magnetic circuit 46 ′, and a diaphragm 43 is bonded to one end of the voice coil bobbin 15 ′. Winding start 10a 'of voice coil conductor 1', winding end 1
The relay eyelets 21 attached to the middle of the diaphragm 43 with both ends of Ob 'being laid on the bobbin 15' and the outside of the diaphragm 43.
, And one end of the flexible wire 22 is connected to the relay eyelet 21, and the other end of the flexible wire 22 is connected to an external connection lug terminal 23 attached to the middle part of the frame 101.
Then, an electric input is connected to and input from the lug terminal 23, the voice coil of the speaker 100 'is vibrated in the axial direction, and the vibration is transmitted to the diaphragm 43 to generate sound.

【０００４】[0004]

【発明が解決しようとする課題】したがって、従来のこ
の種のスピーカ１００’用のボイスコイルにあっては、
導線１’の芯材１ａ’の断面が円形であったために、そ
のままの円形の形態で積み重なるので、積み厚さ
（ｔ’）が大きく、磁気空隙４２’内における導線１’
の占めるスペースフアクタ（占積率）がよくないという
問題があった。また、このようなスピーカ１００’用の
ボイスコイルにあっては、導線１’の外表面が円形であ
るので、多層巻きの場合、接着剤２ｂの導線１’の外周
への回り込みが十分でなく、接着にムラが生じて、接着
力が弱くなるという問題があった。Therefore, in a conventional voice coil for this type of speaker 100 ',
Since the cross section of the core material 1a 'of the conductor 1' is circular, the conductor 1 'is stacked in a circular form as it is, so that the accumulation thickness (t') is large and the conductor 1 'in the magnetic gap 42' is large.
There is a problem that the space factor occupied by the space is not good. Also, in such a voice coil for the speaker 100 ', since the outer surface of the conductor 1' is circular, in the case of a multilayer winding, the adhesive 2b does not sufficiently wrap around the outer periphery of the conductor 1 '. In addition, there has been a problem that uneven adhesion occurs and the adhesive strength is weakened.

【０００５】この場合、磁気回路４６’の中に形成した
磁気空隙４２’の磁束密度は、大きい方が、変換能率も
よく、再生歪みも少ないが、マグネット４１の材質、大
きさ、コストによって制限を受ける。すなわち、磁気回
路４６’中に形成した円環状の磁気空隙４２’の半径方
向の長さＬ’が大きい方が、マグネット４１の有効使用
効率が小さくなって、マグネット４１の占めるコストが
高くなる。したがって、磁気空隙４２’内におけるボイ
スコイル導線１’の断面積と、磁気空隙４２’の断面積
との比率は、大きいほうが、マグネット４１の使用効率
は上昇するので、マグネット４１の磁気コストは下が
る。 すなわち、ボイスコイルの磁気空隙４２’に対す
るマグネット４１の占積率を上昇させるためには、ボイ
スコイル導線１’の占積比率を大きくすればよい。In this case, the larger the magnetic flux density of the magnetic air gap 42 ′ formed in the magnetic circuit 46 ′, the better the conversion efficiency and the less the reproduction distortion, but limited by the material, size and cost of the magnet 41. Receive. That is, as the radial length L 'of the annular magnetic gap 42' formed in the magnetic circuit 46 'increases, the effective use efficiency of the magnet 41 decreases and the cost occupied by the magnet 41 increases. Therefore, the larger the ratio of the cross-sectional area of the voice coil conductor 1 ′ in the magnetic gap 42 ′ to the cross-sectional area of the magnetic gap 42 ′, the higher the use efficiency of the magnet 41, and the lower the magnetic cost of the magnet 41. . That is, in order to increase the space factor of the magnet 41 with respect to the magnetic gap 42 'of the voice coil, the space ratio of the voice coil conductor 1' may be increased.

【０００６】[0006]

【課題を解決するための手段】該目的を達成するための
本願特許請求の範囲の請求項１乃至１３に対応する第１
発明乃至第１３発明の構成を、実施例に対応する図１乃
至図８及び図１１を用いて説明すると、第１発明は、ボ
イスコイルボビン１５にコイル導線１を巻着後、巻芯３
９から離脱することなく、そのまま形成されたコイル部
分１０の巻回した表面を外側から半径方向に押圧して圧
縮成型して、体積変形せしめたことを特徴とするスピー
カ用ボイスコイルである。第２発明は、ボイスコイルボ
ビン１５にコイル導線１を巻着後、巻芯３９から離脱す
ることなく、そのまま形成されたコイル部分１０の巻回
した表面を外側から半径方向に押圧して圧縮成型して、
体積変形せしめて後、キュアリングを施したことを特徴
とする第１発明のスピーカ用ボイスコイルである。第３
発明は、巻回するコイル導線１の絶縁皮膜２ａが、ポリ
アミド、ポリイミド、アミドイミド等の可撓性合成樹脂
より構成されることを特徴とする第１発明又は第２発明
に記載のスピーカ用ボイスコイルである。A first aspect of the present invention for achieving the above object corresponds to claims 1 to 13 of the present application.
The configuration of the invention to the thirteenth invention will be described with reference to FIGS. 1 to 8 and 11 corresponding to the embodiment. The first invention is such that after winding the coil conductor 1 around the voice coil bobbin 15, the core 3
A voice coil for a loudspeaker characterized in that the wound surface of the coil portion 10 formed as it is is pressed radially from the outside and compression-molded to deform the volume without detaching from the coil portion 9. In the second invention, after the coil conductor 1 is wound around the voice coil bobbin 15, the wound surface of the coil portion 10 formed as it is is pressed radially from the outside and compression-molded without detaching from the core 39. hand,
A voice coil for a speaker according to the first aspect of the present invention, which is subjected to curing after being subjected to volume deformation. Third
The voice coil for a speaker according to the first or second invention, wherein the insulating film 2a of the coil conductor 1 to be wound is made of a flexible synthetic resin such as polyamide, polyimide, or amide imide. It is.

【０００７】第４発明は、導線芯材１ａの金属の展延性
が伸び率３５％以上であるコイル導線１を巻回すること
を特徴とする第１発明乃至第３発明のいずれかに記載の
スピーカ用ボイスコイルである。第５発明は、回動する
ロール機３０と、その外側に、回動方向に間隔Ｄを次第
に狭く配置した加熱装置４５を内蔵した受け台３１を配
置し、ロール機３０の回動にしたがって、巻芯３９に巻
き付けたボイスコイルボビン１５’にコイル導線１’を
巻回したボイスコイルの外周を連動して回動させ、コイ
ル巻着部分１０の芯材１ａを巻回した表面の外周面を前
記のロール機３０と受け台３１の間で、転動しながら半
径方向に圧縮成型して平坦部Ｓとしたことを特徴とする
第１発明乃至第４発明のいずれかに記載のスピーカ用ボ
イスコイルである。第６発明は、回動するロール機３０
と、その外側に、回動方向に間隔Ｄを次第に狭く配置し
た加熱装置４５を内蔵した受け台３１を配置し、ロール
機３０の回動にしたがって、巻芯３９に巻き付けたボイ
スコイルボビン１５’にコイル導線１’を巻回したボイ
スコイルの外周を連動して回動させ、コイル巻着部分１
０の芯材１ａを巻回した表面の外周面を前記のロール機
３０と受け台３１の間で、転動しながら半径方向に圧縮
成型して平坦部Ｓとした後、キュアリングを施したこと
を特徴とする第１発明乃至第４発明のいずれかに記載の
スピーカ用ボイスコイルである。According to a fourth aspect of the present invention, there is provided any one of the first to third aspects of the present invention, wherein the coil conductor 1 is formed such that the extensibility of the metal of the conductor core 1a is 35% or more. It is a voice coil for a speaker. In the fifth invention, a rotating roll machine 30 and a receiving table 31 having a built-in heating device 45 with a distance D gradually reduced in the rotating direction are arranged outside the roll machine 30. The outer periphery of the voice coil around which the coil conductor 1 ′ is wound around the voice coil bobbin 15 ′ wound around the core 39 is rotated in conjunction with the voice coil bobbin 15 ′, and the outer peripheral surface of the surface around which the core material 1 a of the coil winding portion 10 is wound is described above. The voice coil for a speaker according to any one of the first to fourth inventions, wherein the flat portion S is formed in the radial direction while rolling between the rolling machine 30 and the cradle 31 by rolling. It is. The sixth invention relates to a rotating roll machine 30.
On the outer side of the voice coil bobbin 15 ′ wound around the winding core 39, a receiving table 31 having a built-in heating device 45 having a distance D gradually reduced in the rotation direction is provided. The outer periphery of the voice coil around which the coil conductor 1 ′ is wound is rotated in conjunction with the voice coil, and the coil winding portion 1 is rotated.
The outer peripheral surface of the surface around which the core material 1a was rolled was compression-molded in the radial direction while rolling between the roll machine 30 and the pedestal 31 to form a flat portion S, and then curing was performed. A voice coil for a speaker according to any one of the first to fourth aspects of the present invention.

【０００８】第７発明は、コイル巻着部分１０の圧縮成
型において、圧着子３６を装着した加熱プレス機３５に
よって半径方向に圧縮成型することを特徴とする第１発
明乃至第４発明のいずれか又は第６発明に記載のスピー
カ用ボイスコイルである。第８発明は、コイル巻着部分
１０の圧縮成型において、加熱した圧着子３６によって
半径方向に圧縮成型した後、キュアリングを施すことを
特徴とする第１発明乃至第４発明のいずれかに記載のス
ピーカ用ボイスコイルである。第９発明は、導線１の芯
材１ａをコイルボビン１５に巻回後、加熱ロール型３
０，受け台３１，又は加熱プレス機３５により、絶縁皮
膜２ａ、接着剤皮膜２ｂを塗着したボイスコイル導線１
の表面を半径方向に圧縮成型し、その後加熱して前記皮
膜２ａ、２ｂをキュアリングして、導線１の芯材１ａ間
どうしを接着結合したことを特徴とする第１発明乃至第
７発明のいずれかに記載のスピーカ用ボイスコイルであ
る。第１０発明は、芯材１ａの最下層の絶縁層２ａと最
外周の接着層２ｂとの間に、圧縮し易い性質をもった緩
衝用の中間層２ｃを配置した導線１１を巻回した後、巻
芯３９から離脱しないで、加熱ロール型３０，受け台３
１，又は加熱プレス機３５，圧着子３６により半径方向
に圧縮成型したことを特徴とする第１発明乃至第９発明
のいずれかに記載のスピーカ用ボイスコイルである。According to a seventh aspect of the present invention, in the compression molding of the coil winding portion 10, any one of the first to fourth inventions is characterized in that the coil is molded in a radial direction by a heating press 35 equipped with a crimping element 36. Or a voice coil for a speaker according to the sixth invention. According to an eighth aspect of the present invention, in the compression molding of the coil-wound portion 10, after performing compression molding in a radial direction by a heated crimping member 36, curing is performed. Speaker voice coil. According to a ninth invention, after the core material 1a of the conductive wire 1 is wound around the coil bobbin 15,
The voice coil conductor 1 coated with the insulating film 2a and the adhesive film 2b by the cradle 31, or the heating press 35.
Of the first to seventh inventions, characterized in that the surface of the conductive wire 1 is radially compression-molded and then heated to cure the coatings 2a and 2b and to bond the cores 1a of the conductive wire 1 together. A speaker voice coil according to any one of the above. According to a tenth invention, after winding a conductive wire 11 in which a buffering intermediate layer 2c having a property of being easily compressed is disposed between a lowermost insulating layer 2a of a core material 1a and an outermost adhesive layer 2b. , Without separating from the core 39, the heating roll mold 30,
The voice coil for a speaker according to any one of the first to ninth aspects, wherein the voice coil is formed by compression molding in a radial direction by one or a heating press 35 and a crimping element 36.

【０００９】第１１発明は、芯材１ａの最下層の絶縁層
２ａと最外周の接着層２ｂとの間に、圧縮し易い性質を
もった緩衝用の中間層２ｃを配置した導線１１を巻回し
た後、巻芯３９から離脱しないで、加熱ロール型３０，
受け台３１，又は加熱プレス機３５，圧着子３６により
半径方向に圧縮成型し、後、キュアリングを施したこと
を特徴とする第１発明乃至第１０発明のいずれかに記載
のボイスコイルである。第１２発明は、巻芯３９にボイ
スコイルボビン１５を巻き付け、その上に絶縁皮膜２
ａ、接着剤２ｂを塗膜したコイル導線１を複数層巻き付
け、巻回後巻芯３９から離脱することなく、前記塗膜２
ａ、２ｂが未乾燥の状態下において、コイル巻着部分１
０の外側から半径方向に加熱しながら押圧力を加えて、
コイル導線１の芯材１ａの形状を体積変化するととも
に、前記塗膜２ａ、２ｂを乾燥して、コイル巻着部分１
０の上層と下層とを嵌合せしめることを特徴とするスピ
ーカ用ボイスコイルの製造方法である。第１３発明は、
巻芯３９にボイスコイルボビン１５を巻き付け、その上
に絶縁皮膜２ａ、接着剤２ｂを塗膜したコイル導線１を
複数層巻き付け、巻回後巻芯３９から離脱することな
く、前記塗膜２ａ、２ｂが未乾燥の状態下において、コ
イル巻着部分１０の外側から半径方向に加熱しながら押
圧力を加えて、コイル導線１の芯材１ａの形状を体積変
化するとともに、前記塗膜２ａ、２ｂを乾燥して、コイ
ル巻着部分１０の上層と下層とを嵌合せしめて後、キュ
アリングを施すことを特徴とするスピーカ用ボイスコイ
ルの製造方法である。In the eleventh invention, a conductive wire 11 having a buffering intermediate layer 2c having a property of being easily compressed is disposed between a lowermost insulating layer 2a and an outermost adhesive layer 2b of a core material 1a. After turning, do not remove from the winding core 39,
The voice coil according to any one of the first to tenth aspects, wherein the voice coil is subjected to compression molding in a radial direction by a cradle 31, or a heating press 35, and a crimping element 36, and then subjected to curing. . According to a twelfth invention, a voice coil bobbin 15 is wound around a core 39, and an insulating film 2
a, a plurality of layers of the coil conductor 1 coated with the adhesive 2b are wound, and after winding, the coil
a and 2b are undried, and the coil-wound portion 1
Applying pressing force while heating in the radial direction from outside 0,
The shape of the core material 1a of the coil conductor 1 is changed in volume, and the coating films 2a and 2b are dried to form the coil winding portion 1a.
A method of manufacturing a voice coil for a loudspeaker, wherein an upper layer and a lower layer are fitted to each other. The thirteenth invention is
The voice coil bobbin 15 is wound around the core 39, and a plurality of layers of the coil conductor 1 coated with the insulating film 2 a and the adhesive 2 b are wound thereon. After the winding, the coating films 2 a, 2 b In an undried state, while applying a pressing force while heating in the radial direction from the outside of the coil winding portion 10, the shape of the core material 1a of the coil conductor 1 is changed in volume, and the coating films 2a, 2b are removed. A method of manufacturing a speaker voice coil, comprising drying and fitting the upper and lower layers of the coil-wound portion 10 and then performing curing.

【００１０】[0010]

【発明の実施の形態】本発明は、このような構成とした
ものであるから、図１に示すとおり、導線１を巻着後、
形成されたコイル部分１０を巻芯３９に取り付けたまま
半径方向に圧縮成型して用いればよい。従って、本発明
のスピーカ用ボイスコイルは、ボイスコイルボビン１５
及び巻回した導線１の外形が崩れず、強固に成形するこ
とができる。その結果、ボイスコイルボビン１５の真円
形保持、形成に寄与するところ大であり、狭隘な磁気空
隙４２に、磁壁に触れないように挿入し易く、歪音の抑
制に好都合なばかりでなく、電気磁気変換能率（感度）
が向上して、大入力に耐え得るスピーカ１００を得るこ
とができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Since the present invention has such a structure, as shown in FIG.
The formed coil part 10 may be used by being compression-molded in the radial direction while being attached to the core 39. Therefore, the voice coil for a speaker according to the present invention is a voice coil bobbin 15
In addition, the outer shape of the wound conductive wire 1 does not collapse, and can be formed firmly. As a result, the voice coil bobbin 15 has a large circular shape, which contributes to the maintenance and formation of the perfect circular shape. The voice coil bobbin 15 can be easily inserted into the narrow magnetic gap 42 without touching the magnetic domain wall. Conversion efficiency (sensitivity)
And the speaker 100 that can withstand a large input can be obtained.

【００１１】本第１発明は、前述した従来のスピーカ１
００’用のボイスコイルが有していた課題を解決するた
めに、コイル導線１を巻回後、巻芯３９から離脱するこ
となく、そのまま巻回した表面を半径方向に押圧して圧
縮成型して、体積変形せしめたことを特徴とするスピー
カ１００用ボイスコイルであって、図４に示す第５発明
のように、回動方向に間隔Ｄを次第に狭く配置した回動
するロール機３０と加熱装置４５を備えた受け台３１と
の間で、巻芯３９に巻き付けたままのコイル導線１’を
巻回したボイスコイルの外周を連動して回動させ、ロー
ル機３０の外周面と受け台３１の間で、圧縮成型するこ
とによって、あるいはまた、図６に示す第７発明のよう
に、コイル巻着部分１０の圧縮成型において、巻芯３９
に複数層巻き付けたコイル導線１を加熱する加熱装置４
５を内蔵した圧着子３６によってそれぞれ半径方向に圧
縮成型することによって、下層の導線１との隣り合わせ
た境界に嵌入するとともに、没入させて、導線１の全体
の断面積合計は変わらないが、全体の重量が変わらず
に、表面体積ｖを小さくでき、さらに第２発明（図２に
示す）、第６発明（図４に示す）、第８発明（図６に示
す）、第９発明（図２，４，６，８に示す）のようにそ
の後、必要に応じてキュアリングを施して仕上げるスピ
ーカ用ボイスコイルである。The first invention is a conventional speaker 1 described above.
In order to solve the problem of the voice coil for 00 ', after winding the coil conductor 1, the wound surface is pressed in the radial direction without being separated from the winding core 39 and compression molded. A voice coil for the speaker 100 characterized in that the volume is deformed, and a rotating roll machine 30 in which the interval D is gradually narrowed in the rotating direction as in the fifth invention shown in FIG. The outer periphery of the voice coil around which the coil conductor 1 ′ is wound around the core 39 is rotated in conjunction with the cradle 31 provided with the device 45 to rotate the outer periphery of the roll machine 30 and the cradle. 31 or by compression molding of the coil winding portion 10 as in the seventh invention shown in FIG.
Heating device 4 for heating coil wire 1 wound in multiple layers around
5 is pressed in the radial direction by a crimping element 36 having a built-in 5 so as to be inserted into and immersed in a boundary adjacent to the lower conductor 1, and the total cross-sectional area of the entire conductor 1 does not change. The surface volume v can be reduced without changing the weight of the second invention (shown in FIG. 2), the sixth invention (shown in FIG. 4), the eighth invention (shown in FIG. 6), and the ninth invention (see FIG. 2, 4, 6 and 8), and thereafter, if necessary, are subjected to curing to finish the speaker voice coil.

【００１２】本第１２発明はまた、巻芯３９にボイスコ
イルボビン１５を巻き付け、その上に絶縁皮膜２ａ、接
着剤２ｂを塗膜したコイル導線１を複数層巻き付け、巻
回後巻芯３９から離脱することなく、前記塗膜２ａ、２
ｂが未乾燥の状態下において、コイル巻着部分１０の外
側から加熱しながら半径方向に押圧力を加えて、コイル
導線１の芯材１ａの形状を体積変化するとともに、前記
塗膜２ａ、２ｂを乾燥して、コイル巻着部分１０の上層
と下層とを嵌合せしめるボイスコイルの製造方法であっ
て、その後、さらに第１３発明のように、必要に応じて
キュアリングを施してし上げるスピーカ用ボイスコイル
の製造方法である。According to the twelfth aspect, the voice coil bobbin 15 is wound around the core 39, and a plurality of layers of the coil conductor 1 coated with the insulating film 2a and the adhesive 2b are wound thereon. The coating films 2a, 2a
While b is in an undried state, a pressing force is applied in the radial direction while heating from the outside of the coil winding portion 10 to change the volume of the shape of the core material 1a of the coil conductor 1 and the coating films 2a, 2b Is a method of manufacturing a voice coil in which the upper layer and the lower layer of the coil winding portion 10 are fitted to each other, and thereafter, the speaker is further subjected to curing if necessary, as in the thirteenth invention. Manufacturing method of the voice coil.

【００１３】以下本発明の実施例について図面に基づい
て詳細に説明する。本発明の実施例を示す図中、図３は
本発明のボイスコイルのボイスコイルの一部切欠斜視外
観拡大図、図４は本発明のボイスコイルの圧縮ロール機
を配置した正面拡大断面図、図５は加圧加熱により圧着
した本発明のボイスコイルの一部切欠斜視拡大縦断面
図、図６は本発明ボイスコイルのプレス機を配置した正
面拡大断面図、図７は本発明のボイスコイル導線の芯材
の構造を示す外観図、図８は本発明のボイスコイル導線
の芯材の構造の他の一例を示す外観図である。Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings showing the embodiment of the present invention, FIG. 3 is a partially cutaway perspective external view enlarged view of a voice coil of the voice coil of the present invention, FIG. 4 is an enlarged front cross-sectional view in which a voice coil compression roll machine of the present invention is arranged, FIG. 5 is a partially cut-away perspective enlarged longitudinal sectional view of the voice coil of the present invention pressed by heating under pressure, FIG. 6 is an enlarged front sectional view of a voice coil of the present invention provided with a press machine, and FIG. 7 is a voice coil of the present invention. FIG. 8 is an external view showing the structure of the core material of the conductor, and FIG. 8 is an external view showing another example of the structure of the core material of the voice coil conductor of the present invention.

【００１４】本発明は、ボイスコイルボビン１５にコイ
ル導線１を巻着後、巻芯３９から離脱することなく、そ
のまま形成されたコイル部分１０の巻回した表面を外側
から半径方向に押圧して圧縮成型して、体積変形せしめ
ることを特徴とするスピーカ用ボイスコイル及びその製
造方法であって、円環状フィルムのボイスコイルボビン
１５を巻線機５０の巻芯３９に巻き付け、巻芯駆動軸３
７を回動しながら、外面を絶縁材皮膜１１で被覆しその
外側を接着剤１３を塗着した断面円形の導線１の芯線１
ａを、ボビン１５上に最下層を巻着固着する。次にその
上に、必要回数巻回して多層に巻回して巻層を形成する
スピーカ用ボイスコイル及びその製造方法である。According to the present invention, after the coil conductor 1 is wound around the voice coil bobbin 15, the wound surface of the coil portion 10 formed as it is is pressed radially from the outside and compressed without detaching from the winding core 39. A voice coil for a speaker and a method of manufacturing the voice coil, wherein the voice coil bobbin 15 of an annular film is wound around a core 39 of a winding machine 50, and the core driving shaft 3 is formed.
7 is rotated, the outer surface is covered with an insulating material film 11, and the outer surface thereof is coated with an adhesive 13.
a, the lowermost layer is wound and fixed on the bobbin 15. Next, there is provided a voice coil for a speaker on which a necessary number of turns are wound and a multi-layer is formed to form a wound layer, and a method of manufacturing the same.

【００１５】しかる後、そのまま形成された巻回したコ
イルを巻き線機５０の、巻芯３９に取り付けたまま、巻
回したコイルの外側を、第５，第６発明のように、ロー
ル機３０と受け台３１によって、また、第７発明のよう
に、加熱プレス機３５と圧着子３６によって、半径方向
に加熱圧着力をかけると、コイルの最上層の導線１の芯
線１ａの断面形状が変形して、断面の上面が平坦Ｓにな
り、断面下面が図２のように尖って、すぐ下層の導線１
の巻隙間に嵌入する。而して、第２発明、第６発明、第
８発明、第９発明、第１１発明のように、熱硬化性樹脂
２ｂを使用したときは、ボイスコイルボビン１５にコイ
ル導線１を巻着後、巻芯３９から離脱することなく、そ
のまま形成されたコイル部分１０の巻回した表面を外側
から押圧して圧縮成型して、体積変形せしめて後、約２
００℃で１時間加熱キュアリングを施して固化したこと
を特徴とするスピーカ用ボイスコイル及びその製造方法
である。After that, while the wound coil formed as it is is attached to the winding core 39 of the winding machine 50, the outside of the wound coil is wound on the rolling machine 30 as in the fifth and sixth inventions. When a heating and pressing force is applied in the radial direction by the heating press 35 and the crimping element 36 as in the seventh invention, the cross-sectional shape of the core wire 1a of the conductor 1 in the uppermost layer of the coil is deformed. Then, the upper surface of the cross section becomes flat S, and the lower surface of the cross section becomes sharp as shown in FIG.
Into the gap. Thus, when the thermosetting resin 2b is used as in the second invention, the sixth invention, the eighth invention, the ninth invention, and the eleventh invention, after the coil conductor 1 is wound around the voice coil bobbin 15, Without detaching from the winding core 39, the wound surface of the coil portion 10 formed as it is is pressed from the outside and compression-molded to deform the volume.
A voice coil for a speaker and a method for manufacturing the voice coil, wherein the voice coil is heated and cured at 00 ° C. for 1 hour.

【００１６】このようにして、図９に示す従来例のよう
な断面円形の導線１’の芯線１ａ’を、図２に示すよう
な不定形な下窄まりの断面形状に変形して、ボイスコイ
ルの導線１の総断面積は変わらないが、積み厚（ｔ）
が、断面円形の導線１’を同層に積層した積み厚
（ｔ’）よりは確実に小さくできる。而して、押圧時、
巻芯３９に嵌めたままであるので、ボビン１５は内側方
向へは変形しないスピーカ用ボイスコイルを得られる。In this way, the core wire 1a 'of the conductor 1' having a circular cross section as in the conventional example shown in FIG. 9 is deformed into an irregular lower constriction cross section as shown in FIG. The total cross-sectional area of the coil wire 1 does not change, but the stack thickness (t)
However, it can be surely made smaller than the stacked thickness (t ′) in which the conductors 1 ′ having a circular cross section are stacked in the same layer. Thus, when pressed,
Since the bobbin 15 remains fitted to the core 39, a voice coil for a speaker that does not deform inward can be obtained.

【００１７】第３発明は、巻回するコイル導線１の絶縁
皮膜２ａが、ポリアミド、ポリイミド、ポリアミドイミ
ド等の可撓性の合成樹脂より構成されることを特徴とす
る第１発明又は第２発明に記載のボイスコイルであっ
て、図１、図２に示す、前記ボイスコイルにおいて、巻
回する導線１の絶縁皮膜２ａをポリアミド、ポリイミ
ド、ポリアミドイミド等の可撓性樹脂により構成するこ
とにより、前記の接着剤２ｂ間の隙間に食い込み没入を
大きく、且つ巻線作業が容易にできるので、作業性に富
み、全体として、保形性もよく、より高いマグネット４
０の使用効率を得ることができる第１発明または第２発
明に記載のスピーカ用ボイスコイルである。According to a third aspect of the present invention, the insulating film 2a of the coil conductor 1 to be wound is made of a flexible synthetic resin such as polyamide, polyimide, polyamide-imide or the like. 1. In the voice coil shown in FIGS. 1 and 2, in the voice coil shown in FIG. 2, the insulating film 2a of the conductive wire 1 to be wound is made of a flexible resin such as polyamide, polyimide, or polyamide-imide. Since the magnets 4 are deeply penetrated into the gaps between the adhesives 2b and can be easily wound, the workability is good, the shape retention is good as a whole, and the higher magnet 4
The voice coil for a speaker according to the first invention or the second invention, which can obtain a usage efficiency of 0.

【００１８】第４発明は、導線芯材１ａの金属の展延性
が伸び率３５％以上であるコイル導線１を巻回すること
を特徴とする第１発明乃至第３発明のいずれかに記載の
スピーカ用ボイスコイルであつて、図１、図２に示す、
前記ボイスコイルにおいて、巻回する導線１の芯材１ａ
の材質を、例えばアニールした銅線のような、展延性の
大きな（伸び率３５％以上の）導線１を使用して構成す
ることにより、小型の小さな圧力のロール押圧機３０又
は熱プレス機３５、圧着子３６等の小さな力で、ボイス
コイルの半径方向の加圧変形を容易に行えるので、圧縮
成型作業が楽に、且つ、仕上げ精度を高く仕上げること
ができて、作業性の向上と、高い精度を図ることができ
る第１発明に記載のスピーカ用ボイスコイルである。According to a fourth aspect of the present invention, there is provided the method according to any one of the first to third aspects, wherein the coil core wire 1 in which the extensibility of the metal of the core material 1a is 35% or more is wound. A voice coil for a speaker, as shown in FIGS.
In the voice coil, the core material 1a of the conductive wire 1 to be wound
Is formed using a conductive wire 1 having a large extensibility (having an elongation of 35% or more), such as an annealed copper wire, so that a small, small-pressure roll press machine 30 or a hot press machine 35 can be used. Since the pressure deformation of the voice coil in the radial direction can be easily performed with a small force of the crimping member 36 and the like, the compression molding operation can be performed easily, and the finishing accuracy can be increased. The voice coil for a speaker according to the first aspect, which can improve accuracy.

【００１９】第５発明は、図４に示すように、回動する
ロール機３０と、その外側に、回動方向に間隔Ｄを次第
に狭く配置した加熱装置４５を内蔵した受け台３１を配
置し、ロール機３０の回動にしたがって、巻芯３９に巻
き付けたボイスコイルボビン１５’にコイル導線１’を
巻回したボイスコイルの外周を連動して回動させ、コイ
ル巻着部分１０の芯材１ａを巻回した表面の外周面を前
記のロール機３０と加熱装置を内蔵した受け台３１の間
で、転動しながら圧縮成型して平坦部Ｓとして仕上げる
ことを特徴とする第１発明乃至第４発明のいずれかに記
載のスピーカ用ボイスコイルであって、ボイスコイルと
して、外面を平坦に仕上げることによって、磁気空隙４
２内に懸架収納されたとき、振動方向に対して磁気空隙
４２の内心磁壁４４に触れ難いためには、できるだけボ
イスコイルの外表面が平坦Ｓな方がよい。According to a fifth aspect of the present invention, as shown in FIG. 4, a rotating roll machine 30 and a cradle 31 having a built-in heating device 45 having a distance D gradually reduced in the rotating direction are arranged outside the rolling machine 30. In accordance with the rotation of the roll machine 30, the outer periphery of the voice coil around which the coil conductor 1 'is wound around the voice coil bobbin 15' wound around the winding core 39 is rotated in conjunction with the core material 1a of the coil winding portion 10. The first to thirteenth to thirteenth aspects of the present invention are characterized in that the outer peripheral surface of the surface on which is wound is compressed and formed as a flat portion S by rolling between the above-mentioned rolling machine 30 and a receiving base 31 having a built-in heating device. 4. A voice coil for a speaker according to any one of claims 4 to 5, wherein the voice coil has a magnetic air gap 4 by finishing the outer surface flat.
The outer surface of the voice coil should be as flat as possible in order to make it difficult to touch the inner core domain wall 44 of the magnetic gap 42 in the vibration direction when the voice coil is suspended and housed in the housing 2.

【００２０】この第５，第６発明に用いられる圧縮ロー
ル機３０の構造は、外側を平らに形成し、ボビン１５を
巻芯３９から離脱しないで、ともに同方向に回転しなが
ら、ボビン１５の外部から押し当てることによって、ボ
ビン１５の形状を圧縮する。その圧縮成型加工の際、コ
イルの内側は、巻芯３９によって強固に保持されている
ので、外形が歪むことはない。The structure of the compression roll machine 30 used in the fifth and sixth inventions is such that the outside is formed flat, and the bobbin 15 is not separated from the winding core 39 but rotates together in the same direction while rotating the bobbin 15 in the same direction. By pressing the bobbin from outside, the shape of the bobbin 15 is compressed. During the compression molding, the inside of the coil is firmly held by the winding core 39, so that the outer shape is not distorted.

【００２１】そして、ロール圧縮機３０は、その外側
に、回動方向に間隔Ｄを次第に狭く配置した加熱装置４
５を内蔵した受け台３１を配置してあるので、圧縮ロー
ル機３０の回動にしたがって、巻芯３９に巻き付けたボ
イスコイルボビン１５’にコイル導線１’を巻回したボ
イスコイルを広い間隔Ｄの側から挿入して、コイル巻着
部分１０の芯材１ａを巻回した表面の外周面を前記の圧
縮ロール機３０と加熱装置４５を内蔵した受け台３１の
間で、転動しながら緩慢な力で押圧力を加えて粗方の成
形を行い、回転にしたがって、順次緊密な押圧力を加え
て外形の整形を施すので、導線１に無理な力が加わらず
に、スムースに加圧変形動作を実現できる。このように
して、高い精度の、外側面の平坦な、積み厚の揃った仕
上がり外形の整った、ボイスコイルが自動的に完成し
て、排出口から排出される。The roll compressor 30 is provided with a heating device 4 on the outside of which the distance D is gradually narrowed in the rotation direction.
5 is arranged, the voice coil in which the coil conductor 1 ′ is wound around the voice coil bobbin 15 ′ wound around the winding core 39 along with the rotation of the compression roll machine 30 is provided at a wide interval D. Inserting from the side, the outer peripheral surface of the surface around which the core material 1a of the coil winding portion 10 is wound is slowly rolled while rolling between the compression roll machine 30 and the receiving base 31 containing the heating device 45. Pressing is applied with force to form a rough shape, and the shape is shaped by applying a tight pressing force in order as the rotor rotates, so that the wire 1 can be smoothly pressed and deformed without excessive force being applied. Can be realized. In this way, a voice coil with a high accuracy, a flat outer surface, a uniform thickness and a finished outer shape is automatically completed and discharged from the discharge port.

【００２２】第６発明は、前記第５発明のボイスコイル
の圧縮成型において、プレス機３５の先端に放射状に必
要数配置して取り付けた加熱装置４５を内蔵した圧着子
３６の先端面で、巻線機５０の巻芯３９に取り付けたま
まで、導線１を巻回したボイスコイルの外側面を外方か
ら押圧して成形する際、圧縮成型加工をした後、熱硬化
性樹脂２ｂを使用したときは、約２００℃で１時間加熱
キュアリング加工を施して接着力を増して後、巻芯３９
に取り付けたまま加熱圧着を加えて、接着剤樹脂２ｂの
反応を完結して、固化したスピーカ用ボイスコイルであ
る。According to a sixth aspect of the present invention, in the compression molding of the voice coil according to the fifth aspect of the invention, a required number of radially arranged and mounted heating devices 45 are mounted on the distal end face of a press machine 35 at the distal end face of a crimping element 36. When the outer surface of the voice coil around which the conductive wire 1 is wound is pressed from the outside while being attached to the winding core 39 of the wire machine 50, when the thermosetting resin 2b is used after compression molding processing Is heated at about 200 ° C. for one hour to increase the adhesive strength, and then the core 39
This is a speaker voice coil that has been solidified by completing the reaction of the adhesive resin 2b by applying heat and pressure while attached to the speaker coil.

【００２３】 また、図６に示す第７発明、第８発明
は、コイル部分１０の圧縮成型において、加熱した圧着
子３６によって、圧着成型することを特徴とする第１発
明又は第４発明に記載のスピーカ用ボイスコイルであっ
て、圧縮プレス機３５の先端に放射状に必要数配置して
取り付けた加熱装置４５を内蔵した圧着子３６の先端面
で、巻線機５０の巻芯３９に取り付けたままで、導線１
を巻回したボイスコイルの外側面を外方から押圧して成
形するスピーカ用ボイスコイルである。圧着子３６の押
圧サイクルが１回終了すると、プレス機３５の圧着子３
６と隣の圧着子３６の継ぎ目がボイスコイルの内側、外
側表面に残って、外形形状が不規則になって、前記した
ボイスコイルの占積率を悪化させる要因となるので、互
いに中心に対して約４５゜づつ回転移動して次の圧縮工
程を行うのことにより、正確な真円形を保持したボイス
コイルを得ることができる。このように、上下動のみの
プレス機３５によって圧縮成型加工の際、コイルボビン
１５の内側は、巻芯３９によって強固に保持されている
ので、ボイスコイルボビン１５の外形が歪むことはな
い。The seventh and eighth inventions shown in FIG. 6 are characterized in that the compression molding of the coil portion 10 is performed by crimping with a heated crimping element 36. The voice coil for a loudspeaker is mounted on the core 39 of the winding machine 50 on the distal end surface of a crimping device 36 having a built-in heating device 45 radially arranged and mounted on the distal end of the compression press 35. Until lead 1
Is a voice coil for a speaker formed by pressing the outer surface of the voice coil wound from outside from outside. When the pressing cycle of the crimp 36 is completed once, the crimp 3 of the press 35
6 and the seam of the adjacent crimping element 36 remain on the inner and outer surfaces of the voice coil, and the outer shape becomes irregular, which causes the space factor of the voice coil to deteriorate. Then, the next compression step is performed by rotating about 45 ° each time, so that a voice coil maintaining an accurate perfect circle can be obtained. As described above, since the inside of the coil bobbin 15 is firmly held by the winding core 39 during the compression molding by the press machine 35 that moves only vertically, the outer shape of the voice coil bobbin 15 is not distorted.

【００２４】導線１の巻回部分の圧縮成型において、周
囲温度が室温であると、接着剤２ｂの反応が鈍くなり、
十分に内部化学反応が進行せず、硬化が完結しなくなる
恐れがある。そこで、巻回部分の圧縮成型において、圧
縮ロール機３０または、プレス機３５の圧着子３６を、
それぞれ内蔵した加熱機４５により加熱して、熱を加え
ながら押圧して圧縮成型することによって、ボイスコイ
ルボビン１５及び接着層２ｂの軟化が容易になり、導線
１との馴染みがよくなり、固着力が増大する。また、導
線１の体積変化がし易くなり、接着剤２ｂの反応が十分
に進行し、全体の圧縮作業が楽に完成できる。In the compression molding of the wound portion of the conductive wire 1, if the ambient temperature is room temperature, the reaction of the adhesive 2b becomes slow,
There is a possibility that the internal chemical reaction does not proceed sufficiently and the curing is not completed. Therefore, in the compression molding of the winding portion, the compression roll machine 30 or the crimping element 36 of the press machine 35 is used.
Each of the voice coil bobbin 15 and the adhesive layer 2b is easily softened by being heated by the built-in heater 45, pressed while applying heat, and compressed, so that the voice coil bobbin 15 and the conductive layer 1 are easily conformed to each other and the fixing force is improved. Increase. Further, the volume of the conductive wire 1 is easily changed, the reaction of the adhesive 2b sufficiently proceeds, and the entire compression work can be completed easily.

【００２５】第８発明は、前記した第１発明乃至第４発
明のいずれか又は第７発明に前記した、加熱した圧着子
３６によって圧縮成型した後、キュアリングを施すこと
を特徴とする第１発明乃至第４発明のいずれか又は第７
発明に記載のスピーカ用ボイスコイルであって、図６に
示すように、プレス機３５の先端に放射状に必要数配置
して取り付けた圧着子３６の先端面で、巻線機５０の巻
芯３９に取り付けたままで、導線１を巻回したボイスコ
イルの外側面を押圧して成形後、巻芯３９に取り付けた
まま加熱圧着を加えて、接着樹脂２ｂの反応を促進し
て、固化を短時間に、完全に完結することにより、導線
１の芯材１ａ間を固化せしめて、導線１の芯材１ａ間ど
うしを接着結合し、また、熱硬化性樹脂２ｂを使用した
ときは、約２００℃で１時間加熱キュアリング加工を施
して接着力増強を施したスピーカ用ボイスコイルであ
る。According to an eighth aspect of the present invention, any one of the first to fourth aspects of the present invention or the seventh aspect of the present invention is characterized in that, after compression-molding with the heated crimping element 36, curing is performed. Any one of the inventions to the fourth invention or the seventh invention
The voice coil for a speaker according to the present invention, as shown in FIG. Pressing the outer surface of the voice coil around which the conductive wire 1 is wound while the wire is wound, and then applying heat and pressure while attaching the wire to the core 39 to promote the reaction of the adhesive resin 2b and shorten solidification in a short time. When completely completed, the cores 1a of the conductors 1 are solidified, the cores 1a of the conductors 1 are adhesively bonded to each other, and when the thermosetting resin 2b is used, about 200 ° C. This is a voice coil for a speaker which has been subjected to a heating curing process for one hour to enhance the adhesive strength.

【００２６】このように、本発明においては、まだ柔軟
な状態で圧縮成型して保形加工を施して真円形を保持し
た、精確な寸法仕上がりのスピーカ用ボイスコイルが容
易に得られる。ひいては、磁気空隙４２の長さＬを小さ
くしても磁壁４４に擦れたり、歪んだりする恐れが無く
なって、小型のマグネット４０を使用でき、マグネット
４０の使用効率を上げることができるので、安価なスピ
ーカ１００が得られる。As described above, according to the present invention, it is possible to easily obtain a speaker voice coil having a precise size finish, which is compression-molded in a still flexible state and subjected to shape-retaining processing to maintain a perfect circular shape. As a result, even if the length L of the magnetic gap 42 is reduced, there is no risk of rubbing or distorting the magnetic wall 44, and a small magnet 40 can be used, and the use efficiency of the magnet 40 can be increased. The speaker 100 is obtained.

【００２７】第９発明は、導線１の芯材１ａをコイルボ
ビン１５に巻回後、加熱ロール型３０，受け台３１，又
は加熱プレス機３５により、絶縁皮膜２ａ、接着剤皮膜
２ｂを塗着した表面を圧縮成型し、その後加熱して皮膜
２ａ、２ｂのキュアリングを施して、導線１の芯材１ａ
間どうしを接着結合したことを特徴とする第１発明乃至
第７発明のいずれかに記載のスピーカ用ボイスコイルで
あって、図８に示すように、導線１の表面に塗布した絶
縁皮膜、及びその上に熱可塑性接着剤２ｂを柔軟な、か
つ、変形し易く圧縮し易い材料を多層に重ねて巻着し
て、最外周と、すぐ下層の導線１との間の絶縁層２ａ
が、ロール機３０又はプレス機３５と圧着子３６で圧縮
成型したときに、相互に体積変形を発生したときに、熱
可塑性のために互いに相手側の体域内に滑り込んで、食
い込む度合いを大きくすることにより、ボイスコイル全
体の積み厚さ（ｔ）と見掛けの体積（ｖ）を小さくでき
る第１発明乃至第８発明のいずれかに記載のスピーカ用
ボイスコイルである。According to a ninth aspect of the present invention, after the core material 1a of the conductive wire 1 is wound around the coil bobbin 15, the insulating film 2a and the adhesive film 2b are applied by the heating roll mold 30, the pedestal 31, or the heating press machine 35. The surface is compression-molded and then heated to cure the coatings 2a and 2b, and the core 1a of the conductor 1 is formed.
The speaker voice coil according to any one of the first to seventh inventions, wherein the gaps are adhesively bonded to each other, as shown in FIG. 8, an insulating film applied to the surface of the conductive wire 1, and A thermoplastic adhesive 2b is laminated thereon with a flexible, easily deformable and easily compressible material and wound thereon to form an insulating layer 2a between the outermost periphery and the conductor 1 immediately below.
However, when compression molding is performed by the roll machine 30 or the press machine 35 and the crimping element 36, when volume deformation occurs mutually, they slip into each other's body region due to thermoplasticity, thereby increasing the degree of biting. Accordingly, the speaker voice coil according to any one of the first to eighth aspects of the invention can reduce the total thickness (t) and apparent volume (v) of the entire voice coil.

【００２８】第１０発明は、図８に示すように、芯材１
ａの最下層の絶縁層２ａと最外周の接着層２ｂとの間
に、圧縮し易い性質をもった緩衝用の中間層２ｃを配置
した導線１１を巻回した後、巻芯３９から離脱しない
で、加熱ロール型３０，受け台３１，又は加熱プレス機
３５と圧着子３６により圧縮成型した第１発明乃至第９
発明のいずれかに記載のボイスコイルであって、前記の
ような押圧時、絶縁層２ａと、接着層２ｂとの間に介在
して、外圧を緩衝して和らげ、絶縁層を保護することが
できる。第１１発明は、前記した第１０発明のボイスコ
イルボビンにおいて、芯材１ａの最下層の絶縁層２ａと
最外周の接着層２ｂとの間に、圧縮し易い性質をもった
緩衝用の中間層２ｃを配置した導線１１を巻回した後、
巻芯３９から離脱しないで、加熱ロール型３０，受け台
３１，又は加熱プレス機３５と圧着子３６により半径方
向に圧縮成型し、さらにその後、加熱キュアリングを施
した第１発明乃至第１０発明のいずれかに記載のボイス
コイルである。According to a tenth aspect, as shown in FIG.
a, after winding the conducting wire 11 having the buffering intermediate layer 2c having the property of being easily compressed between the lowermost insulating layer 2a and the outermost adhesive layer 2b, it does not separate from the core 39. The first to ninth aspects of the present invention, which are compression-molded by the heating roll mold 30, the cradle 31,
In the voice coil according to any one of the aspects of the present invention, it is possible to interpose between the insulating layer 2a and the adhesive layer 2b to buffer and relieve external pressure and protect the insulating layer during the pressing as described above. it can. An eleventh invention is directed to the voice coil bobbin according to the tenth invention, wherein the buffering intermediate layer 2c having the property of being easily compressed is provided between the lowermost insulating layer 2a and the outermost adhesive layer 2b of the core material 1a. After winding the conductive wire 11 in which
The first to tenth aspects of the present invention in which the core is not separated from the core 39, but is radially compression-molded by the heating roll mold 30, the cradle 31, or the heating press 35 and the crimping element 36, and then subjected to heating curing. The voice coil according to any one of the above.

【００２９】第１２発明は、巻芯３９にボイスコイルボ
ビン１５を巻き付け、その上に絶縁皮膜２ａ、接着剤２
ｂを塗膜したコイル導線１を複数層巻き付け、巻回後巻
芯３９から離脱することなく、コイル導線１の芯材１ａ
の形状を体積変化するとともに、前記塗膜２ａ、２ｂが
未乾燥の状態下において、前記塗膜２ａ、２ｂの熱可塑
性及び可撓性を利用してコイル巻着部分１０の上層と下
層とをより密に嵌合せしめることを特徴とするスピーカ
用ボイスコイルの製造方法である。第１３発明は、巻芯
３９にボイスコイルボビン１５を巻き付け、その上に絶
縁皮膜２ａ、接着剤２ｂを塗膜したコイル導線１を複数
層巻き付け、巻回後巻芯３９から離脱することなく、前
記塗膜２ａ、２ｂが未乾燥の状態下において、コイル巻
着部分１０の外側から加熱しながら押圧力を加えて、あ
るいは、プレス機３５の加熱圧着子３６によって、加熱
しながら押圧力を加えることにより、コイル導線１の芯
材１ａの形状を体積変化するとともに、前記塗膜２ａ、
２ｂを乾燥して、コイル巻着部分１０の上層と下層とを
嵌合せしめて後、キュアリングを施す第１２発明に記載
のスピーカ用ボイスコイルの製造方法である。According to a twelfth aspect of the present invention, the voice coil bobbin 15 is wound around the core 39, and the insulating film 2a and the adhesive 2
b) is wound around a plurality of layers, and the core material 1a of the coil conductor 1 is not separated from the core 39 after winding.
And the upper and lower layers of the coil-wound portion 10 are formed by utilizing the thermoplasticity and flexibility of the coatings 2a and 2b while the coatings 2a and 2b are not dried. A method of manufacturing a voice coil for a speaker, wherein the voice coil is fitted more closely. According to a thirteenth aspect, the voice coil bobbin 15 is wound around the core 39, and a plurality of layers of the coil conductor 1 coated with the insulating film 2a and the adhesive 2b are wound thereon, without being detached from the core 39 after winding. Applying a pressing force while heating from the outside of the coil winding portion 10 while the coating films 2a and 2b are in an undried state, or applying a pressing force while heating with the heating press 36 of the press 35. By changing the volume of the shape of the core material 1a of the coil conductor 1, the coating film 2a,
The method of manufacturing a speaker voice coil according to the twelfth aspect, wherein the second coil 2b is dried, the upper layer and the lower layer of the coil winding portion 10 are fitted to each other, and then curing is performed.

【００３０】この本第１２発明、第１３発明の製造方法
は、従来手作業では不可能であつたスピーカ１００の自
動組み立て工程にそのまま適応できて、スピーカ１００
の品質、コスト低減の向上に資するところ大である。こ
の製造方法により、従来、多層巻きした積み厚ｔ’が大
であったボイスコイルの積み厚ｔを小さくできて、スピ
ーカ１００に組み込んだとき、それだけ磁気空隙４２の
半径方向の長さＬを小さくできるので、同一の磁束密度
を保持するのに、マグネット４０の体積を小さくできる
ので、マグネット４０の磁気空隙４２に対するスペース
ファクタを改良できて磁気使用効率が向上するととも
に、マグネット４０の単価が低下するので、スピーカ１
００全体のコストを著しく低減することができる。The manufacturing methods of the twelfth and thirteenth inventions can be directly applied to the automatic assembling process of the speaker 100, which has been impossible by the conventional manual operation.
Quality and cost reduction. According to this manufacturing method, the stacking thickness t of the voice coil, which was conventionally large in the multilayer winding thickness t ', can be reduced, and when the voice coil is incorporated in the speaker 100, the radial length L of the magnetic gap 42 is reduced accordingly. Since the volume of the magnet 40 can be reduced while maintaining the same magnetic flux density, the space factor of the magnet 40 with respect to the magnetic gap 42 can be improved, the magnetic use efficiency can be improved, and the unit price of the magnet 40 can be reduced. So the speaker 1
The overall cost can be significantly reduced.

【００３１】以上本発明の代表的と思われる実施例ボイ
スコイルを使用した ４×３ｃｍ のスピーカ１００につ
いて説明したが、従来例のボイスコイルを使用したスピ
ーカ１００’と比較して、図１１にそれぞれの周波数特
性を示す。このように、再生音圧において約２ｄＢ、再
生周波数音域においても拡大されており、ボイスコイル
の温度上昇を放熱し易くなって、耐入力特性も向上して
いることが明白である。さらにまた、本発明ボイスコイ
ルにおいては、０．１８ｍｍφの導線１ａを使用して、
接着強度を測定した結果、従来例で４５〜５０ｇｆであ
ったのが、６０〜６５ｇｆに向上している。The 4 × 3 cm speaker 100 using the voice coil according to the embodiment which is considered to be a representative example of the present invention has been described above. FIG. As described above, the reproduction sound pressure is increased by about 2 dB in the reproduction frequency range, and it is apparent that the temperature rise of the voice coil is easily radiated, and the input resistance is also improved. Furthermore, in the voice coil of the present invention, using the conductor 1a of 0.18 mmφ,
As a result of measuring the adhesive strength, the value was 45 to 50 gf in the conventional example, but is improved to 60 to 65 gf.

【００３２】以上のとおり、本発明の代表的と思われる
実施例について説明したが、本発明は必ずしもこれらの
実施例構造のみに限定されるものではなく、本発明にい
う前記の構成要件を備え、かつ、本発明にいう目的を達
成し、以下にいう効果を有する範囲内において適宜改変
して実施することができるものである。As described above, the embodiments which are considered to be representative of the present invention have been described. However, the present invention is not necessarily limited to only the structures of these embodiments, and the present invention has the above-mentioned constituent features of the present invention. In addition, the present invention achieves the object of the present invention, and can be implemented with appropriate modifications within a range having the following effects.

【００３３】[0033]

【発明の効果】以上の説明から既に明らかなように、本
発明は、導線１を巻着後、形成されたコイル部分を巻芯
に取り付けたまま半径方向に圧縮成型して用いればよ
い、としたものであるから、形成されたコイル部分を半
径方向に圧縮成型することによって、変形して、従来円
形の断面の導線１の積み重ねであった構造を、下層の導
線１の互いに隣り合わせた境界に嵌入するとともに、接
着剤２ｂをその一層と二層との境界において、没入させ
て、ボイスコイル全体の断面積合計は変わらないで、表
面体積（ｖ）を小さくできる、という従来のものには期
待することが出来ない顕著な効果を有するに至ったので
ある。As is clear from the above description, according to the present invention, after the conductor 1 is wound, the coil portion formed may be compression-molded in the radial direction while being attached to the core, and used. Therefore, the formed coil portion is deformed by compression molding in the radial direction, thereby deforming the structure, which has conventionally been the stack of the conductors 1 having a circular cross section, at the boundary between the lower conductors 1 adjacent to each other. It is anticipated that the conventional adhesive can be inserted and the adhesive 2b can be immersed at the boundary between the one layer and the two layers, so that the total cross-sectional area of the entire voice coil does not change and the surface volume (v) can be reduced. It has a remarkable effect that cannot be done.

【００３４】巻回するコイル導線１の絶縁皮膜２ａが、
ポリアミド、ポリイミド、ポリアミドイミド等の可撓性
樹脂より構成され、その上に熱可塑性接着剤２ｂを柔軟
なかつ、変形し易く圧縮し易い材料を選択して、巻導線
１を多層に重ねて巻着してあるから、最外周と、すぐ下
層の導線１との間の絶縁層が、前記の接着剤２ｂとの食
い込み没入度合いを大きく、かつ深く取れるので、小型
のロール機３０又はプレス機３５の小さな力で、圧縮成
型でき、ボイスコイルの変形を容易に行えるので、相互
に体積変形を発生し、相手側の体域内に滑り込んで、食
い込むことにより、圧縮成型作業が楽に、ボイスコイル
全体の積み厚さ（ｔ）と（皮膜、接着剤等の風袋を含
む）見掛けの体積（ｖ）を小さくできるという効果が大
きい。且つ、仕上げ精度が高くできて、作業性の向上を
図ることができ、全体として、より高いマグネット４０
の使用能率を得ることができる。The insulating film 2a of the coil conductor 1 to be wound is
It is composed of a flexible resin such as polyamide, polyimide, polyamide-imide, etc., on which a thermoplastic adhesive 2b is selected from a material which is flexible and easily deformable and compressible. Since the insulating layer between the outermost circumference and the immediately lower conductive wire 1 has a large degree of bite and immersion with the adhesive 2b and can be taken deeply, the small roll machine 30 or the press machine 35 can be used. The compression molding can be performed with a small force, and the voice coil can be easily deformed, so the volume deformation occurs mutually, and the voice coil slides into the body area of the other party and bites into it, making the compression molding work easier and the entire voice coil stacked. The effect of reducing the thickness (t) and the apparent volume (v) (including the tare of a film, an adhesive, etc.) is great. In addition, the finishing accuracy can be increased, and the workability can be improved.
Efficiency can be obtained.

【００３５】ボイスコイルの外面を平坦Ｓに仕上げるこ
とによって、磁気空隙４２内に収納されたときに、振動
方向に対して磁気空隙４２の内磁壁に触れ難くなり、ロ
ール機３０又は、プレス機３５によって、巻着した表面
を圧縮成型することによって、正確な真円形のボビンの
ボイスコイルを有するスピーカを得ることができる。ロ
ール機３０又は、プレス機３５を加熱して、加熱プレス
して圧縮成型することによって、ボイスコイルボビン１
５の軟化が容易になり、導線１との馴染みがよくなり、
固着力が増大する。また、導線１の体積変化がし易くな
り、接着剤２ｂの反応が十分に進行し、全体の圧縮、固
着作業が楽に完成できる。By finishing the outer surface of the voice coil to be flat S, it becomes difficult to touch the inner magnetic wall of the magnetic gap 42 with respect to the vibration direction when the voice coil is housed in the magnetic gap 42, and the roll machine 30 or the press machine 35 Thus, by compression molding the wound surface, it is possible to obtain a speaker having a voice coil of an accurate true circular bobbin. The voice coil bobbin 1 is formed by heating the roll machine 30 or the press machine 35 and hot-pressing and compression molding.
5 is easy to soften, the familiarity with the conductor 1 is improved,
The fixing force increases. Further, the volume of the conductive wire 1 is easily changed, the reaction of the adhesive 2b sufficiently proceeds, and the entire compression and fixing work can be completed easily.

【００３６】さらに、本スピーカ用ボイスコイル製造方
法は、巻芯３９にボイスコイルボビン１５を巻き付けた
まま、コイル導線１を複数層巻き付け、巻芯３９に巻き
付けたまま、塗膜２ａ，２ｂが未乾燥の状態下におい
て、コイル巻着部分１０の外側から、加熱しながら押圧
力を加えることにより、コイル導線１の芯材１ａの形状
を体積変化し、また、キュアリング加工を施すので、前
記塗膜２ａ、２ｂの乾燥工程中において、塗膜２ａ、２
ｂの熱可塑性及び可撓性を利用してコイル巻着部分１０
の上層と下層とをより密に嵌合せしめるので、従来、ボ
イスコイルの積み厚ｔを小さくできて、磁気空隙４２の
半径方向の長さＬを小さくでき、マグネット４０の体積
を小さくできて、マグネット４０のスペースファクタを
改良できて磁気使用効率が向上し、マグネット４０の単
価が低下するので、スピーカ１００全体のコストを著し
く低減することができる効果がある。Further, in this method of manufacturing a voice coil for a speaker, the coil conductor 1 is wound in a plurality of layers while the voice coil bobbin 15 is wound around the core 39, and the coating films 2a and 2b are undried while being wound around the core 39. In the state of (1), by applying a pressing force while heating from the outside of the coil winding portion 10, the shape of the core material 1a of the coil conductor 1 is changed in volume, and a curing process is performed. During the drying process of 2a, 2b, the coating films 2a, 2b
coil winding part 10 utilizing the thermoplasticity and flexibility of b
Since the upper layer and the lower layer are more closely fitted to each other, the stack thickness t of the voice coil can be reduced conventionally, the radial length L of the magnetic gap 42 can be reduced, and the volume of the magnet 40 can be reduced. Since the space factor of the magnet 40 can be improved, the magnetic use efficiency can be improved, and the unit price of the magnet 40 can be reduced, so that the overall cost of the speaker 100 can be significantly reduced.

【００３７】また、本発明製造方法は、巻芯３９にボイ
スコイルボビン１５を巻き付け、その上に絶縁皮膜２
ａ、接着剤２ｂを塗膜したコイル導線１を複数層巻き付
け、巻回後巻芯３９から離脱することなく、前記塗膜２
ａ、２ｂが未乾燥の状態下において、コイル巻着部分１
０の外側から加熱しながら押圧力を加えて、あるいは、
プレス機３５の加熱圧着子３６によって、加熱しながら
押圧力を加えることにより、コイル導線１の芯材１ａの
形状を体積変化することができるとともに、塗膜２ａ、
２ｂの熱可塑性及び可撓性を利用して前記塗膜２ａ、２
ｂを乾燥しコイル巻着部分１０の上層と下層とをより密
に嵌合せしめることができるスピーカ用ボイスコイルの
製造方法である。Further, in the manufacturing method of the present invention, the voice coil bobbin 15 is wound around the core 39, and the insulating film 2
a, a plurality of layers of the coil conductor 1 coated with the adhesive 2b are wound, and after winding, the coil
a and 2b are undried, and the coil-wound portion 1
Applying pressing force while heating from outside 0, or
By applying a pressing force while being heated by the heating press 36 of the press 35, the shape of the core material 1a of the coil conductor 1 can be changed in volume and the coating film 2a,
2b, utilizing the thermoplasticity and flexibility of 2b.
This is a method for manufacturing a voice coil for a speaker, which is capable of drying b and fitting the upper layer and the lower layer of the coil winding portion 10 more closely.

【００３８】このように、この本発明製造方法は、従来
手作業では不可能であつたスピーカ１００の自動組み立
て工程にそのまま適応できて、スピーカ１００の品質、
コスト低減の向上に資するところ大である。この製造方
法により、従来、多層巻きした積み厚ｔ’が大であった
ボイスコイルの積み厚ｔを小さくできて、スピーカ１０
０に組み込んだとき、それだけ磁気空隙４２の半径方向
の長さＬを小さくできるので、同一の磁束密度を保持す
るのに、マグネット４０の体積を小さくできるので、マ
グネット４０の磁気空隙４２に対するスペースファクタ
を改良できて磁気使用効率が向上するとともに、マグネ
ット４０の単価が低下するので、スピーカ１００全体の
コストを著しく低減することができる。さらに、これに
伴いスピーカ１００の再生音圧も向上し、再生音域も拡
張でき、ボイスコイルの温度上昇を放熱し易くなる効果
を併せ実現できる。したがって、本発明のスピーカ用ボ
イスコイル及びその製造方法は、従来のボイスコイル組
み立て自動機への組み込み、適用も容易に可能となり、
製造コスト軽減に益するところ極めて大となる発明であ
る。As described above, the manufacturing method of the present invention can be directly applied to the automatic assembling process of the loudspeaker 100, which has been impossible by the conventional manual operation.
This is a great contribution to improving cost reduction. According to this manufacturing method, the stacked thickness t of the voice coil, which was conventionally large in the stacked thickness t ′, can be reduced.
0, the radial length L of the magnetic gap 42 can be reduced accordingly, and the volume of the magnet 40 can be reduced while maintaining the same magnetic flux density. Can be improved, the magnetic use efficiency can be improved, and the unit price of the magnet 40 can be reduced, so that the overall cost of the speaker 100 can be significantly reduced. Further, with this, the sound pressure reproduced by the speaker 100 is also improved, the sound range to be reproduced can be expanded, and the effect of easily radiating the temperature rise of the voice coil can be realized. Therefore, the voice coil for a speaker of the present invention and the method of manufacturing the same can be easily incorporated into a conventional voice coil assembling automatic machine, and can be easily applied.
This is an extremely large invention that can reduce manufacturing costs.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明のボイスコイルを使用したスピーカの断
面図。FIG. 1 is a sectional view of a speaker using a voice coil of the present invention.

【図２】プレス機を配した本発明のボイスコイルの断面
拡大図。FIG. 2 is an enlarged sectional view of the voice coil of the present invention provided with a press machine.

【図３】本発明のボイスコイルの一部切欠斜視外観拡大
図。FIG. 3 is a partially cutaway perspective external view enlarged view of the voice coil of the present invention.

【図４】圧縮ロール機を配置した本発明のボイスコイル
の正面拡大断面図。FIG. 4 is an enlarged front sectional view of the voice coil of the present invention in which a compression roll machine is arranged.

【図５】加圧加熱により圧着した本発明のボイスコイル
の一部切欠拡大縦断面図。FIG. 5 is a partially cut-away enlarged vertical sectional view of the voice coil of the present invention pressed by heating under pressure.

【図６】プレス機と圧着子を配置した本発明ボイスコイ
ルの正面拡大断面図。FIG. 6 is an enlarged front sectional view of the voice coil of the present invention in which a press and a crimping element are arranged.

【図７】本発明のボイスコイル導線の芯材の構造を示す
外観図。FIG. 7 is an external view showing a structure of a core material of the voice coil conductor of the present invention.

【図８】本発明のボイスコイル導線の芯材の構造の他の
一例を示す外観図。FIG. 8 is an external view showing another example of the structure of the core material of the voice coil conductor of the present invention.

【図９】従来例のボイスコイルの縦断面拡大図。FIG. 9 is an enlarged longitudinal sectional view of a conventional voice coil.

【図１０】従来例のボイスコイルを使用したスピーカの
断面図。FIG. 10 is a cross-sectional view of a speaker using a conventional voice coil.

【図１１】本発明のボイスコイルと従来のボイスコイル
をそれぞれ装備したスピーカとの音圧周波数特性。FIG. 11 shows sound pressure frequency characteristics of a speaker equipped with the voice coil of the present invention and a conventional voice coil.

【符号の説明】[Explanation of symbols]

１，１’，１１ コイル導線 １０，１０’ コイル巻着部分 １０ａ 巻始め（端） １０ｂ 巻終わり（端） １５，１５’ ボイスコイルボビン １ａ，１ａ’ 芯材 ２ａ，２ａ’ 外側絶縁皮膜 ２ｂ，２ｂ’ 接着剤 ２ｃ 中間皮膜 ２１ 中継ハトメ ２２ 可撓線 ２３ ラグ端子 ３０ 圧縮ロール機 ３１ 受け台 ３５ プレス機 ３６ 圧着子 ３７，３７’ 巻芯駆動軸 ３８ シャンク ３９ 巻き芯 ４０，４１ マグネット ４２，４２’ 磁気空隙 ４３ 振動板 ４４ 磁極（中央） ４５ 加熱器 ４６，４６’ 磁気回路 ５０ 巻線機 １００，１００’ スピーカ １０１ フレーム Ｄ 回転ロール機と受け台の間隔 ｔ，ｔ’ ボイスコイル巻導線の断面積み厚 ｖ ボイスコイル巻導線の導線部分の体積 ｓ ボイスコイル巻導線の平坦部 Ｌ，Ｌ’ 磁気空隙長 1, 1 ', 11 Coil conductor 10, 10' Coil winding part 10a Winding start (end) 10b Winding end (end) 15, 15 'Voice coil bobbin 1a, 1a' Core material 2a, 2a 'Outer insulating film 2b, 2b 'Adhesive 2c Intermediate film 21 Relay eyelet 22 Flexible wire 23 Lug terminal 30 Compression roll machine 31 Cradle 35 Press machine 36 Crimper 37, 37' Core drive shaft 38 Shank 39 Core 40, 41 Magnet 42, 42 ' Magnetic gap 43 Diaphragm 44 Magnetic pole (center) 45 Heater 46, 46 'Magnetic circuit 50 Winding machine 100, 100' Speaker 101 Frame D Spacing between rotary roll machine and cradle t, t 'Cross section of voice coil winding wire Thickness v Volume of the conductor part of the voice coil wound wire s Flat part of the voice coil wound wire L, L 'Magnetic gap length

───────────────────────────────────────────────────── フロントページの続き (72)発明者 土井 輝夫 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 溝根 信也 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 5D012 AA03 BA01 BA02 BB05 CA03 CA15 EA04 FA02 FA04 FA07 GA01 JA01 5H633 BB02 GG03 GG06 GG09 GG11 GG12 HH02  ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Teruo Doi 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Shinya Mizone 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 5D012 AA03 BA01 BA02 BB05 CA03 CA15 EA04 FA02 FA04 FA07 GA01 JA01 5H633 BB02 GG03 GG06 GG09 GG11 GG12 HH02

Claims (13)

【特許請求の範囲】[Claims] 【請求項１】 ボイスコイルボビン(15)にコイル導線
(1)を巻着後、巻芯(39)から離脱することなく、そのま
ま形成されたコイル部分(10)の巻回した表面を外側から
半径方向に押圧して圧縮成型して、体積変形せしめたこ
とを特徴とするスピーカ用ボイスコイル。1. A coil wire is connected to a voice coil bobbin (15).
After winding (1), the wound surface of the formed coil portion (10) is pressed radially from the outside without compressing it and detaching from the winding core (39), and compression-molded to deform the volume. A voice coil for a speaker. 【請求項２】 ボイスコイルボビン(15)にコイル導線
(1)を巻着後、巻芯(39)から離脱することなく、そのま
ま形成されたコイル部分(10)の巻回した表面を外側から
半径方向に押圧して圧縮成型して、体積変形せしめて
後、キュアリングを施したことを特徴とする請求項１の
スピーカ用ボイスコイル。2. A coil wire is connected to the voice coil bobbin (15).
After winding (1), the wound surface of the formed coil portion (10) is pressed radially from the outside without compressing it and detaching from the winding core (39), and compression-molded to deform the volume. 2. The voice coil for a speaker according to claim 1, wherein curing is performed after the step. 【請求項３】 巻回するコイル導線(1)の絶縁皮膜(2a)
が、ポリアミド、ポリイミド、ポリアミドイミド等の可
撓性合成樹脂より構成されることを特徴とする請求項１
又は２に記載のスピーカ用ボイスコイル。3. The insulating film (2a) of the coil conductor (1) to be wound.
Is made of a flexible synthetic resin such as polyamide, polyimide, or polyamide-imide.
Or the voice coil for a speaker according to 2. 【請求項４】 導線芯材(1a)の金属の展延性が伸び率３
５％以上であるコイル導線(1)を巻回することを特徴と
する請求項１乃至３のいずれかに記載のスピーカ用ボイ
スコイル。4. The extensibility of the metal of the conductor core material (1a) is 3
The voice coil for a speaker according to any one of claims 1 to 3, wherein a coil conductor (1) of 5% or more is wound. 【請求項５】 回動するロール機(30)と、その外側に、
回動方向に間隔(D)を次第に狭く配置した加熱装置(45)
を内蔵した受け台(31)を配置し、ロール機(30)の回動に
したがって、巻芯(39)に巻き付けたボイスコイルボビン
(15')にコイル導線(1')を巻回したボイスコイルの外周
を連動して回動させ、コイル巻着部分(10)の芯材(1a)を
巻回した表面の外周面を前記のロール機(30)と受け台(3
1)の間で、転動しながら半径方向に圧縮成型して平坦部
(S)としたことを特徴とする請求項１乃至４のいずれか
に記載のスピーカ用ボイスコイル。5. A rotating roll machine (30) and, outside thereof,
Heating device (45) with the spacing (D) gradually reduced in the rotating direction
The voice coil bobbin wound around the core (39) with the rotation of the roll machine (30)
(15 ') The voice coil around which the coil conductor (1') is wound is rotated in conjunction with the outer periphery, and the outer circumferential surface of the surface around which the core material (1a) of the coil winding portion (10) is wound is said. Roll machine (30) and cradle (3
1) Compression molding in the radial direction while rolling, flat
The speaker voice coil according to any one of claims 1 to 4, wherein (S) is set. 【請求項６】 回動するロール機(30)と、その外側に、
回動方向に間隔(D)を次第に狭く配置した加熱装置(45)
を内蔵した受け台(31)を配置し、ロール機(30)の回動に
したがって、巻芯(39)に巻き付けたボイスコイルボビン
(15')にコイル導線(1')を巻回したボイスコイルの外周
を連動して回動させ、コイル巻着部分(10)の芯材(1a)を
巻回した表面の外周面を前記のロール機(30)と受け台(3
1)の間で、転動しながら半径方向に圧縮成型して平坦部
(S)とした後、キュアリングを施したことを特徴とする
請求項１乃至４のいずれかに記載のスピーカ用ボイスコ
イル。6. A rotating roll machine (30) and, outside thereof,
Heating device (45) with the spacing (D) gradually reduced in the rotating direction
The voice coil bobbin wound around the core (39) with the rotation of the roll machine (30)
(15 ') The voice coil around which the coil conductor (1') is wound is rotated in conjunction with the outer periphery, and the outer circumferential surface of the surface around which the core material (1a) of the coil winding portion (10) is wound is said. Roll machine (30) and cradle (3
1) Compression molding in the radial direction while rolling, flat
The voice coil for a speaker according to any one of claims 1 to 4, wherein curing is performed after (S). 【請求項７】 コイル巻着部分(10)の圧縮成型におい
て、圧着子(36)を装着した加熱プレス機(35)によって半
径方向に圧縮成型することを特徴とする請求項１乃至４
のいずれか又は６に記載のスピーカ用ボイスコイル。7. The compression molding of the coil winding portion (10) is performed by radial compression molding with a heating press (35) equipped with a crimping element (36).
7. The voice coil for a speaker according to any one of the above items or 6. 【請求項８】 コイル巻着部分(10)の圧縮成型におい
て、加熱した圧着子(36)によって圧縮成型した後、キュ
アリングを施すことを特徴とする請求項１乃至４のいず
れかに記載のスピーカ用ボイスコイル。8. The method according to claim 1, wherein in the compression molding of the coil winding portion (10), curing is performed after compression molding with a heated crimping element (36). Voice coil for speaker. 【請求項９】 導線(1)の芯材(1a)をコイルボビン(15)
に巻回後、加熱ロール型(30)，受け台(31)，又は加熱プ
レス機(35)により、絶縁皮膜(2a)、接着皮膜(2b)の塗着
したボイスコイル導線(1)の表面を半径方向に圧縮成型
し、その後加熱して前記皮膜(2a)、(2b)をキュアリング
して、導線(1)の芯材(1a)間どうしを接着結合したこと
を特徴とする請求項１乃至７のいずれかに記載のスピー
カ用ボイスコイル。9. A core material (1a) of a conductor (1) is coiled to a coil bobbin (15).
After being wound around, the surface of the voice coil wire (1) on which the insulating film (2a) and the adhesive film (2b) are applied is heated by a heating roll mold (30), a cradle (31), or a heating press (35). Compression molding in the radial direction, then heating to cure the coating (2a), (2b), adhesively bonded between the cores (1a) of the conductive wire (1). 8. The speaker voice coil according to any one of 1 to 7. 【請求項１０】 芯材(1a)の最下層の絶縁層(2a)と最外
周の接着層(2b)との間に、圧縮し易い性質をもった緩衝
用の中間層(2c)を配置した導線(11)を巻回した後、巻芯
(39)から離脱しないで、加熱ロール型(30)，受け台(3
1)，又は加熱プレス機(35)により半径方向に圧縮成型し
たことを特徴とする請求項１乃至９のいずれかに記載の
スピーカ用ボイスコイル。10. A buffering intermediate layer (2c) having a property of being easily compressed is provided between the lowermost insulating layer (2a) and the outermost adhesive layer (2b) of the core material (1a). After winding the conducting wire (11)
Do not remove from (39), heat roll type (30), cradle (3
The voice coil for a speaker according to any one of claims 1 to 9, wherein the voice coil is formed by compression molding in a radial direction by using (1) or a heating press (35). 【請求項１１】 芯材(1a)の最下層の絶縁層(2a)と最外
周の接着層(2b)との間に、圧縮し易い性質をもった緩衝
用の中間層(2c)を配置した導線(11)を巻回した後、巻芯
(39)から離脱しないで、加熱ロール型(30)，受け台(3
1)，又は加熱プレス機(35)により半径方向に圧縮成型
し、キュアリングを施したことを特徴とする請求項１乃
至１０のいずれかに記載のスピーカ用ボイスコイル。11. A buffering intermediate layer (2c) having a property of being easily compressed is disposed between the lowermost insulating layer (2a) and the outermost adhesive layer (2b) of the core material (1a). After winding the conducting wire (11)
Do not remove from (39), heat roll type (30), cradle (3
The speaker voice coil according to any one of claims 1 to 10, wherein the voice coil is subjected to compression molding in a radial direction by 1) or a heating press machine (35) and subjected to curing. 【請求項１２】 巻芯(39)にボイスコイルボビン(15)を
巻き付け、その上に絶縁皮膜(2a)、接着剤(2b)を塗膜し
たコイル導線(1)を複数層巻き付け、巻回後巻芯(39)か
ら離脱することなく、前記塗膜(2a)、(2b)が未乾燥の状
態下において、コイル巻着部分(10)の外側から半径方向
に加熱しながら押圧力を加えて、コイル導線(1)の芯材
(1a)の形状を体積変化するとともに、前記塗膜(2a)、(2
b)を乾燥して、コイル巻着部分(10)の上層と下層とを嵌
合せしめるスピーカ用ボイスコイルの製造方法。12. A voice coil bobbin (15) is wound around a winding core (39), and a plurality of coil conductors (1) coated with an insulating film (2a) and an adhesive (2b) are wound thereon. Without detaching from the winding core (39), while the coating films (2a) and (2b) are in an undried state, applying a pressing force while heating in a radial direction from outside the coil winding portion (10). , Core material of coil conductor (1)
While changing the volume of the shape of (1a), the coating film (2a), (2
b) A method of manufacturing a voice coil for a speaker in which b) is dried and the upper layer and the lower layer of the coil winding portion (10) are fitted together. 【請求項１３】 巻芯(39)にボイスコイルボビン(15)を
巻き付け、その上に絶縁皮膜(2a)、接着剤(2b)を塗膜し
たコイル導線(1)を複数層巻き付け、巻回後巻芯(39)か
ら離脱することなく、前記塗膜(2a)、(2b)が未乾燥の状
態下において、コイル巻着部分(10)の外側から半径方向
に加熱しながら押圧力を加えて、コイル導線(1)の芯材
(1a)の形状を体積変化するとともに、前記塗膜(2a)、(2
b)を乾燥して、コイル巻着部分(10)の上層と下層とを嵌
合せしめて後、キュアリングを施すことを特徴とするス
ピーカ用ボイスコイルの製造方法。13. A voice coil bobbin (15) is wound around a core (39), and a plurality of coil conductors (1) coated with an insulating film (2a) and an adhesive (2b) are wound thereon. Without detaching from the winding core (39), while the coating films (2a) and (2b) are in an undried state, applying a pressing force while heating in a radial direction from outside the coil winding portion (10). , Core material of coil conductor (1)
While changing the volume of the shape of (1a), the coating film (2a), (2
b) A method for producing a voice coil for a speaker, comprising drying b), fitting the upper layer and the lower layer of the coil winding portion (10), and then performing curing.
JP13174199A 1999-05-12 1999-05-12 Manufacturing method of voice coil for speaker Expired - Fee Related JP3612575B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109348397A (en) * 2018-11-19 2019-02-15 深圳市星特科技有限公司 A kind of Full-automatic coiling voice coil sound film combination pen machine
CN110121141A (en) * 2019-05-27 2019-08-13 东莞市纳声电子设备科技有限公司 A kind of multiaxis Full-automatic simple sound membrane production equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109348397A (en) * 2018-11-19 2019-02-15 深圳市星特科技有限公司 A kind of Full-automatic coiling voice coil sound film combination pen machine
CN109348397B (en) * 2018-11-19 2024-01-26 深圳市星特科技有限公司 Full-automatic wire winding voice coil loudspeaker voice coil sound membrane combination marking machine
CN110121141A (en) * 2019-05-27 2019-08-13 东莞市纳声电子设备科技有限公司 A kind of multiaxis Full-automatic simple sound membrane production equipment

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