JPS60162400A - Production of heatproof voice coil - Google Patents
Production of heatproof voice coilInfo
- Publication number
- JPS60162400A JPS60162400A JP1870284A JP1870284A JPS60162400A JP S60162400 A JPS60162400 A JP S60162400A JP 1870284 A JP1870284 A JP 1870284A JP 1870284 A JP1870284 A JP 1870284A JP S60162400 A JPS60162400 A JP S60162400A
- Authority
- JP
- Japan
- Prior art keywords
- voice coil
- heatproof
- paint
- self
- adhesive
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、側熱性の優れたボイスコイルの製造法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a voice coil with excellent side heating properties.
近年ステレオ等の音響機器は、ますます高出力。In recent years, audio equipment such as stereos has become increasingly high-output.
高性能が要求されつつあシ、これに使用するボイスコイ
ルも耐振性と優れた耐熱破壊特性が必要とされる。すな
わちコイル支持紙管とその表面に巻回された線輪とが強
固に一体化したボイスコイルが要求されているところ、
従来既存のものでは未だ□機械的、熱的に十分満足する
特性が得られていない。As high performance is increasingly required, the voice coils used in these devices also need to have vibration resistance and excellent heat breakdown resistance. In other words, there is a demand for a voice coil in which the coil support paper tube and the wire wound on its surface are firmly integrated.
Conventionally existing products have not yet achieved sufficiently satisfactory mechanical and thermal properties.
ボイスコイルは通常、コイル支持紙管の上に、アルコー
ル系溶剤を塗布しながら自己融着性エナメル線を密巻し
、加熱乾燥して線間および紙管と線輪間を融着一体化せ
しめることにより得られる。。Voice coils are usually made by tightly wrapping self-adhesive enameled wire on a paper tube supporting the coil while coating it with an alcohol-based solvent, and then heating and drying it to fuse and integrate the wires and the paper tube and wire ring. It can be obtained by .
この場合コイルの機械的、熱的破壊現象は、初めに紙管
と線輪間、次いで線間相互の接着界面に生じることが最
も多い。この主な理由は、(1)紙管と線輪の熱膨張率
が異なるため、両者間に歪を生ずること。(2)振動に
よυ紙管と線輪間に、ずれを発生すること。であシ、最
悪の場合は線輪が脱落し、ボイスコイルとしての機能を
失う。In this case, mechanical and thermal destruction of the coil most often occurs first at the bonding interface between the paper tube and the wire ring, and then at the adhesive interface between the wires. The main reasons for this are: (1) The paper tube and the wire have different coefficients of thermal expansion, which causes distortion between them. (2) Vibration may cause misalignment between the paper tube and the wire ring. In the worst case scenario, the coil will fall off and lose its function as a voice coil.
本発明は上記の事柄を勘案してなされたも、ので、コイ
ル支持紙管の表面に予め特定材料・組成の熱硬化性樹脂
接着塗料を半硬化状態で塗布しておき、その上に、上記
接着塗料を絶縁皮膜を介して塗布焼付した自己融着性絶
縁電線を上記樹脂を溶解する極性非水溶媒を塗布しなが
ら密巻した後、加熱処理を施し、紙管と線輪とを融着一
体化することを要旨とし、以て耐熱接着強度の向上を図
9たものである。以下にその詳細を説明する。The present invention has been made in consideration of the above-mentioned matters. Therefore, a thermosetting resin adhesive coating of a specific material and composition is applied in a semi-cured state on the surface of a coil supporting paper tube in advance, and then the above-mentioned Self-bonding insulated wires with adhesive paint coated and baked through an insulating film are tightly wound while applying a polar non-aqueous solvent that dissolves the resin, and then heat treated to fuse the paper tube and wire ring. The main idea is to integrate the parts, and thereby improve the heat-resistant adhesive strength as shown in Figure 9. The details will be explained below.
ボイスコイル支持紙管の材質は、耐熱性で、加熱処理時
の寸法変化も小さく、かつ高温に長時間さらされても劣
化しない全芳香族ポリアミド系の合成紙(ノーメックス
紙)、ポリイミド含浸ガラス不織布、全芳香族ポリアミ
ド繊維とガラス繊維からなる不織布、全芳香族ポリアミ
ド繊維と各種セラミック短繊維とからなる合成紙、各種
金属箔が使用でき、限定されないが、ポリイミド含浸ガ
ラス不織布が特に有効に用いられる。との耐熱性紙管の
表面に直接自己融着性絶縁電線を密巻したボイスコイル
では、種々の実験結果よシ紙管と線輪との接着力が充分
でなかったため、本発明では予め全芳香族ポリアミド樹
脂又は全芳香族ポリアミド樹脂とビスマレイミド・トリ
アジン樹脂との混合物をこれらの樹脂を溶解し得る極性
非水溶媒に溶解した熱硬化性樹脂接着塗料を半硬化状態
で紙管表面に塗布し、溶剤再活性のある均一な接着皮膜
を形成せしめておく。こζに用いられる全芳香族ポリア
ミド樹脂の具体例としては、イソフタル酸ジクロライド
とm−フェニレンジアミンとの脱塩酸反応により得られ
る全芳香族ポリアミド樹脂カシ有効である。The voice coil support paper tube is made of fully aromatic polyamide-based synthetic paper (Nomex paper), which is heat resistant, shows little dimensional change during heat treatment, and does not deteriorate even when exposed to high temperatures for long periods of time, and polyimide-impregnated glass nonwoven fabric. , nonwoven fabrics made of wholly aromatic polyamide fibers and glass fibers, synthetic papers made of wholly aromatic polyamide fibers and various ceramic short fibers, and various metal foils can be used, and although not limited to, polyimide-impregnated glass nonwoven fabrics are particularly effectively used. . In the case of a voice coil in which a self-bonding insulated wire is tightly wound directly on the surface of a heat-resistant paper tube, various experimental results show that the adhesion between the paper tube and the coil was insufficient. A thermosetting resin adhesive paint made by dissolving an aromatic polyamide resin or a mixture of a fully aromatic polyamide resin and a bismaleimide/triazine resin in a polar non-aqueous solvent that can dissolve these resins is applied to the surface of the paper tube in a semi-cured state. to form a uniform adhesive film with solvent reactivation. As a specific example of the fully aromatic polyamide resin used in this process, a fully aromatic polyamide resin obtained by a dehydrochlorination reaction between isophthalic acid dichloride and m-phenylenediamine is effective.
またビスマレイミド・トリアジン樹脂は、ビスフェノー
ルAにクロルシアンを反応させて得られるトリアジン樹
脂モノマー又はこれを高分子量化したトリアジン樹脂オ
リゴマーに更にビスマレイミドを反応させて得られるト
リアジン環を有する熱硬化型耐熱樹脂で、例えばBTレ
ジン(三菱瓦斯化学社商品名)が挙げられる。これらの
樹脂を溶解し得る極性非水溶媒としては、ジメチルホル
ムアミド。Bismaleimide/triazine resin is a thermosetting heat-resistant type having a triazine ring obtained by reacting a triazine resin monomer obtained by reacting bisphenol A with chlorocyan or a triazine resin oligomer obtained by increasing the molecular weight of this monomer with bismaleimide. Examples of the resin include BT resin (trade name, Mitsubishi Gas Chemical Co., Ltd.). An example of a polar non-aqueous solvent that can dissolve these resins is dimethylformamide.
N−メチルピルリドン等が使用できる。N-methylpyridone and the like can be used.
この特定材料・組成の熱硬化性樹脂接着塗料が半硬化の
状態で塗布されたボイスコイル支持紙管の表面に、上記
接着塗料を絶縁導体上に塗布焼付した自己融着性絶縁電
線が、上記極性非水溶媒を塗布しながら密巻される。極
性非水溶媒の存在によシ、自己融着性絶縁電線の接着皮
膜は活性化し接着性を示すものである。巻線されたボイ
スコイルは、この後加熱乾燥されることにより、接着塗
料が硬化し線間および紙管と線輪間が強固に融着一体化
する。On the surface of the voice coil support paper tube, on which the thermosetting resin adhesive paint of the specific material and composition is applied in a semi-cured state, the self-bonding insulated wire is made by applying the adhesive paint on the insulated conductor and baking it. It is tightly rolled while applying a polar non-aqueous solvent. Due to the presence of the polar non-aqueous solvent, the adhesive film of the self-bonding insulated wire is activated and exhibits adhesive properties. The wound voice coil is then heated and dried to harden the adhesive paint and firmly fuse and integrate the wires and the paper tube and wire ring.
以下に本発明の実施例について説明する。Examples of the present invention will be described below.
合成例 全芳香族ポリアミド樹脂(ポリ m−7エニレ
ンイソ7タルアミド)の合成
2ooomgのフラスコに攪拌機、温度計、滴下漏斗を
取シ付け、m−フェニレンジアミン32.4i(0,5
mol)、水酸化ナトリウA 24. Of (0,6
mol)を、水750d中に溶解する。仁の水溶液を十
分に攪拌しながら、イソフタル酸クロリドbs、qt
(o、51smol)を含むシクロヘキサノン500−
を5分間以内に滴下し、激しく10分間攪拌する。攪拌
を継続し1時間後、ポリマー懸濁液を多量のアセトン中
に注ぎ、ガラスフィルターでポリマーを濾別する。ポリ
マーをアセト肴熱水で繰シ返し洗浄乾燥する。得られた
ポリ−m−7エニレンイソフタル、アミ・ド樹脂は7゜
?で、96チ硫酸中での固有粘度は0.8〜1.0 P
/ dlであった。この樹脂70fを、N−メチル−2
−ピロリドン630?に溶解し、1oチ濃度の溶液を調
製した。Synthesis Example Synthesis of fully aromatic polyamide resin (poly m-7 enylene iso-7 talamide) A 200mg flask was equipped with a stirrer, a thermometer, and a dropping funnel, and 32.4i (0,5
mol), sodium hydroxide A 24. Of (0,6
mol) in 750 d of water. While thoroughly stirring the aqueous solution of
(o, 51 smol) of cyclohexanone 500-
dropwise within 5 minutes and stir vigorously for 10 minutes. After 1 hour of continued stirring, the polymer suspension was poured into a large amount of acetone, and the polymer was filtered off using a glass filter. The polymer is washed repeatedly with acetic hot water and dried. The obtained poly-m-7 enylene isophthalic, amide resin is 7°? The intrinsic viscosity in 96-thiosulfuric acid is 0.8-1.0 P.
/dl. This resin 70f was mixed with N-methyl-2
-Pyrrolidone 630? to prepare a solution with a concentration of 10%.
耐熱ボイスコイルの製造
合成例で得た全芳香族ポリアミド樹脂を用い、又はこれ
とビスマレイミド−トリアジン樹脂との混合物を用い、
極性非水溶媒であるN−メチル−2−ピロリドンに溶解
した、表−1に示す配合組成の耐熱接着塗料を調製した
。なおビスマレイミド−トリアジン樹脂は、市販のBT
−2112(三菱瓦斯化学社商品名)を使用した。Using the fully aromatic polyamide resin obtained in the production synthesis example of a heat-resistant voice coil, or using a mixture of this and a bismaleimide-triazine resin,
A heat-resistant adhesive paint having the composition shown in Table 1 was prepared by dissolving it in N-methyl-2-pyrrolidone, which is a polar non-aqueous solvent. The bismaleimide-triazine resin is commercially available BT
-2112 (trade name of Mitsubishi Gas Chemical Co., Ltd.) was used.
表−1
厚さ0.07mのポリイミドガラスクロスに、上記耐熱
接着塗料を塗膜厚さが0.015鵡となるようにバーコ
ーに均一に塗布し、120°Cの恒温槽中で5分間乾燥
し、3種類のボイスコイル紙管A、B(1)及びB(2
)を製造した。Table 1: Apply the above heat-resistant adhesive paint evenly on a polyimide glass cloth with a thickness of 0.07 m to a coating thickness of 0.015 m, and dry for 5 minutes in a thermostatic oven at 120 °C. There are three types of voice coil paper tubes A, B (1) and B (2).
) was manufactured.
次に、導体径0.13 mの銅線にポリアミドイミド絶
縁塗料を仕上外径が0.145BIとなるように塗布焼
付した絶縁導体の上に、上記耐熱接着塗料を仕上外径0
.155wIIとなるように塗布焼付し、3種類の自己
融着エナメル銅線a、b(1)及びb(2)を製造した
。そしてこの自己融着性エナメル銅線を上記ボイスコイ
ル紙管に、表−2に示す組合せで巻線し、本発明に係る
耐熱ボイスコイルを製造する。ボイスコイル紙管は幅2
5語、長さ76mの短冊形に切断され、巻線治具に接着
塗料の塗布面を外側にし円筒形に取シつけられる。その
表面に自己融着エナメル銅線をジメチルホルムアミドを
塗布しながら二層に106ターン整列に巻線した。巻線
終了後、巻き治具のまま120°Cの乾燥炉で15分間
予備加熱し、その後230°Cの乾燥炉で15分間加熱
硬化させ、耐熱ボイスコイルを得た。Next, polyamide-imide insulating paint was applied to a copper wire with a conductor diameter of 0.13 m so that the finished outer diameter was 0.145 BI, and then the above heat-resistant adhesive paint was applied on top of the insulated conductor, which was baked so that the finished outer diameter was 0.145 BI.
.. Three types of self-bonding enamelled copper wires a, b(1) and b(2) were manufactured by coating and baking to give a thickness of 155wII. The self-bonding enamelled copper wire is then wound around the voice coil paper tube in the combinations shown in Table 2 to produce a heat-resistant voice coil according to the present invention. The voice coil paper tube has a width of 2
It was cut into a rectangular shape with 5 words and a length of 76 m, and was mounted in a cylindrical shape on a winding jig with the side coated with adhesive paint facing outward. A self-bonding enamelled copper wire was wound on the surface thereof in two layers with 106 turns aligned while applying dimethylformamide. After the winding was completed, the winding jig was preheated in a drying oven at 120°C for 15 minutes, and then cured by heating in a drying oven at 230°C for 15 minutes to obtain a heat-resistant voice coil.
表−2
得られたボイスコイルの耐熱性・構造特性を針側するた
め、ボイスコイルに200Wの電力を60秒間加え(コ
イル上昇温度500〜350°C程度)、劣化後の線材
の表面状態、線輪が紙管よシ剥離、脱落する状態及び線
間の接着力を測定した。接着力の 5測定は次のように
行った。両面にベアリングを埋め込んだ円筒形の測定治
具に、製作した25′Im径のボイスコイルを嵌め込み
、巻線の一端を歪計の一端に固定し、さらに測定治具を
50cb下に移動させ、線−線間の接着力は巻線の第1
層と第2層の接着力強度を、線輪−紙管間の接着力は第
1層と紙管の梓豊力強塵を、引張り試験機で測定した。Table 2: In order to evaluate the heat resistance and structural characteristics of the obtained voice coil, 200 W of power was applied to the voice coil for 60 seconds (coil temperature rise approximately 500 to 350°C), and the surface condition of the wire after deterioration was determined. The state in which the wire rings peeled off from the paper tube and fell off, and the adhesive strength between the wires were measured. 5 Measurements of adhesive strength were performed as follows. The manufactured voice coil with a diameter of 25'Im was fitted into a cylindrical measuring jig with bearings embedded on both sides, one end of the winding was fixed to one end of the strain meter, and the measuring jig was further moved 50cb down. The adhesive force between wires is the first of the windings.
The adhesive strength between the first layer and the paper tube was measured using a tensile tester.The adhesive strength between the wire ring and the paper tube was measured using a tensile tester.
試験結果を表−5に示す。なお接着力の値は、測定値の
平均を示したものである。The test results are shown in Table-5. Note that the adhesive force value indicates the average of the measured values.
表−3
なお比較例として示したものは、紙管に塗布する接着塗
料及び自己融着性エナメル銅線の接着塗料として、アル
コール可溶性ポリアミド樹脂に硬化成分としてビスマレ
イミドとエポキシ樹脂とを混合したものをクレゾールを
主体とし次溶剤に溶解した塗料を用いたボイスコイルに
ついての特性である。Table 3: Comparative examples include alcohol-soluble polyamide resin mixed with bismaleimide and epoxy resin as curing components for adhesive paint applied to paper tubes and adhesive paint for self-adhesive enamelled copper wire. This is a characteristic of a voice coil using a paint mainly composed of cresol and dissolved in a solvent.
試験結果から明らかなように、本発明の方法により得た
ボイスコイルは従来品に比較して耐熱特性が著しく優れ
、スピーカに組込まれた場合、高入力、大出力の再生に
も十分に耐え、信頼性に富んだ製品を提供し得る。As is clear from the test results, the voice coil obtained by the method of the present invention has significantly superior heat resistance characteristics compared to conventional products, and when incorporated into a speaker, it can withstand high input and high output playback. We can provide highly reliable products.
出願人東京特殊電線株式会社 代表者小暮継生Applicant Tokyo Special Electric Wire Co., Ltd. Representative Tsugio Kogure
Claims (1)
ビスマレイミド・トリアジン樹脂との混合物をこれらの
樹脂を溶解し得る極性非水溶媒に溶解しだ熱硬化性樹脂
接着塗料を、予めコイル支持紙管の表面に半硬化状態で
塗布しておき、その上に、上記接着塗料を絶縁導体上に
塗布焼付した自己融着性絶縁電線を、上記極性非水溶媒
を塗布しながら密巻した後、加熱硬化することを特徴と
する耐熱ボイスコイルの製造法。A wholly aromatic polyamide resin or a mixture of a wholly aromatic polyamide resin and a bismaleimide/triazine resin is dissolved in a polar nonaqueous solvent that can dissolve these resins, and a thermosetting resin adhesive coating is applied to the coil supporting paper tube in advance. The surface is coated in a semi-cured state, and on top of that, the self-bonding insulated wire, which has been coated and baked on an insulated conductor with the above adhesive paint, is tightly wound while applying the above polar non-aqueous solvent, and then heated and cured. A method for manufacturing a heat-resistant voice coil characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1870284A JPS60162400A (en) | 1984-02-02 | 1984-02-02 | Production of heatproof voice coil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1870284A JPS60162400A (en) | 1984-02-02 | 1984-02-02 | Production of heatproof voice coil |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60162400A true JPS60162400A (en) | 1985-08-24 |
Family
ID=11978968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1870284A Pending JPS60162400A (en) | 1984-02-02 | 1984-02-02 | Production of heatproof voice coil |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60162400A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52133564A (en) * | 1976-04-30 | 1977-11-09 | Onkyo Kk | Method of manufacturing voice coil |
JPS57177067A (en) * | 1981-04-24 | 1982-10-30 | Du Pont Mitsui Fluorochem Co Ltd | Primer for fluororesin coating material |
JPS58150399A (en) * | 1982-03-02 | 1983-09-07 | Matsushita Electric Ind Co Ltd | Speaker voice coil |
-
1984
- 1984-02-02 JP JP1870284A patent/JPS60162400A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52133564A (en) * | 1976-04-30 | 1977-11-09 | Onkyo Kk | Method of manufacturing voice coil |
JPS57177067A (en) * | 1981-04-24 | 1982-10-30 | Du Pont Mitsui Fluorochem Co Ltd | Primer for fluororesin coating material |
JPS58150399A (en) * | 1982-03-02 | 1983-09-07 | Matsushita Electric Ind Co Ltd | Speaker voice coil |
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