JPS6120496A - Coil for electromachanical transducer - Google Patents
Coil for electromachanical transducerInfo
- Publication number
- JPS6120496A JPS6120496A JP14163284A JP14163284A JPS6120496A JP S6120496 A JPS6120496 A JP S6120496A JP 14163284 A JP14163284 A JP 14163284A JP 14163284 A JP14163284 A JP 14163284A JP S6120496 A JPS6120496 A JP S6120496A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- coil
- speaker
- voice coil
- resin
- 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】
産業上の利用分野
本発明は、電気音響変換器用ボイスコイル、モータ用界
磁コイル及びアーマチュアコイル、ソレノイド、リニア
モータ用コイル、リフティングマグネット用コイル、電
磁開閉器用コイル、ブザー用コイルの如き電気ｔＪｌ！
械変換装置に用いられるコイル、特にそれらのコイルに
使用される接着剤に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to voice coils for electroacoustic transducers, field coils and armature coils for motors, solenoids, coils for linear motors, coils for lifting magnets, coils for electromagnetic switches, and buzzers. Electric tJl like a coil!
The present invention relates to coils used in mechanical transducers, and particularly to adhesives used in those coils.
背景技術とその問題点 以下にスピーカ用ボイスコイルを例にとって説明する。Background technology and its problems An explanation will be given below using a speaker voice coil as an example.
スピーカ用ボイスコイル（１１において、第１図及び第
２図に示すように、線材（２）は、ボビン材（３）の巻
線部に塗布された接着剤（４）及び線材（２）に被着さ
れた接着剤（４）を介してボビン材（３）に巻装されて
いる。（５）は、絶縁材である。ボイスコイル（１）は
、音声入力待振動し、発熱する。従って、ボイスコイル
（１）の周辺材料には、耐熱性及び機械的強度が高いこ
とが要求される。特に、接着剤（４）については、この
ような特性が強く要求される。従来この種の接着剤とし
て、アミド系樹脂を主成分とする接着剤（アミド系接着
剤）、ブチラールとフェノールの混合系樹脂を主成分と
する接着剤（ブチラール−フェノール系接着剤）又は後
述する本発明に係るイミド系樹脂以外のイミド系樹脂を
主成分とする接着剤（イミド系接着剤）が使用されてい
る。表１に上記接着剤の耐熱性、ＪＩＳ耐熱区分、接着
力、曲げ弾性率を示し、第３図にそれらの温度に対する
相対剛性率の変化を測定した結果を示す。In the speaker voice coil (11), as shown in Figures 1 and 2, the wire (2) is attached to the adhesive (4) applied to the winding part of the bobbin material (3) and the wire (2). It is wound around a bobbin material (3) via an adhesive (4) applied thereto. (5) is an insulating material.The voice coil (1) vibrates and generates heat when receiving voice input. Therefore, the material surrounding the voice coil (1) is required to have high heat resistance and mechanical strength.In particular, the adhesive (4) is strongly required to have such properties. As the adhesive, an adhesive whose main component is an amide resin (amide adhesive), an adhesive whose main component is a mixed resin of butyral and phenol (butyral-phenol adhesive), or the present invention described below. Adhesives (imide adhesives) whose main components are imide resins other than such imide resins are used.Table 1 shows the heat resistance, JIS heat resistance classification, adhesive strength, and flexural modulus of the above adhesives. , Figure 3 shows the results of measuring changes in relative rigidity with respect to temperature.
表 １ ※接着力は、Ａｌ板２枚の剥がし強度 を測定したものである。Table 1 *Adhesive strength is the peel strength of two aluminum plates. was measured.
第３図で、曲線Ａはアミド系接着剤、曲線Ｂはブチラー
ル−フェノール系接着剤、曲線Ｃはイミド系接着剤であ
る。これらの表及び図から、アミド系接着剤とブチラー
ル−フェノール系接着剤は、耐熱性と曲げ弾性率が低く
、また高温時における曲げ弾性率の低下が著しいことが
わかる。従って、振動伝達歪みが大きいという欠点を有
し、特に高入力時においてはこの影響が大きい。一方、
イミド系接着剤は、前記２種の接着剤とは異なり、耐熱
性と曲げ弾性率は比較的良好であるが、接着力が小さく
、また高温になると弾性力が低下するという欠点を存す
る。In FIG. 3, curve A is an amide adhesive, curve B is a butyral-phenol adhesive, and curve C is an imide adhesive. From these tables and figures, it can be seen that the amide adhesive and the butyral-phenol adhesive have low heat resistance and flexural modulus, and that the flexural modulus decreases significantly at high temperatures. Therefore, it has the disadvantage that the vibration transmission strain is large, and this effect is particularly large at high inputs. on the other hand,
Imide adhesives differ from the above two types of adhesives in that they have relatively good heat resistance and flexural modulus, but have the drawbacks of low adhesive strength and reduced elasticity at high temperatures.
モータにおいては、過大負荷時にコイルが加熱し、焼損
、短絡、高温時の高速回転によるアーマチュアコイルの
ふくれ等の問題がある。その他の電気機械変換装置にお
いても高負荷、高出力時のコイルの耐熱性、強度等が問
題となる。In motors, the coils heat up when overloaded, causing problems such as burnout, short circuits, and swelling of the armature coils due to high-speed rotation at high temperatures. In other electromechanical transducers, heat resistance, strength, etc. of the coil at high loads and high outputs also pose problems.
発明の目的
本発明は、上述の点に鑑みて、高入力時あるいは高出力
時においても安定した特性を維持することができる電気
機械変換装置用コイルを提供することを目的とする。OBJECTS OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide a coil for an electromechanical transducer that can maintain stable characteristics even at high input or high output.
発明の概要
本発明は、ボビン材の巻線部用接着剤又はこの巻線部に
巻回される線材用の接着剤として、ポリアミノビスマレ
イミド樹脂が含まれてなる接着剤を使用したことを特徴
とする電気機械変換装置用コイルである。Summary of the Invention The present invention is characterized in that an adhesive containing polyamino bismaleimide resin is used as an adhesive for the winding portion of the bobbin material or for the wire wound around the winding portion. This is a coil for an electromechanical transducer.
上記発明により、高入力時あるいは高出力時における特
性の著しい低下を防止することができる。According to the above invention, it is possible to prevent significant deterioration of characteristics at high input or high output.
実施例
実施例１
先ず、本実施例において使用する接着剤として、下記構
造式を有するポリアミノビスマレイミド樹脂（ポリアミ
ノマレ″イミド樹脂とも言う）が溶剤となる１−メチル
−２−ピロリドン溶液に３０重螢％熔解されている接着
剤（４）を用意する。次に、第１図及び第２図に示すよ
うに、 １００μ厚のアルミ箔よりなるボビン材（３）
の巻線部に上記接着剤（４）を塗布した後、エステルイ
ミド樹脂カ９色縁材（５）として形成された線材（２）
に上記接着剤（４）を被着し、この線材（２）をボビン
材（３）の巻線部に巻装する。そして、２００℃で２時
間接着剤（４）の硬化を行って、本実施例に係るスピー
カ用ボイスコイル＋１１を得る。Examples Example 1 First, as an adhesive to be used in this example, a polyamino bismaleimide resin (also referred to as polyamino maleimide resin) having the following structural formula was added to a 1-methyl-2-pyrrolidone solution as a solvent for 30 times. Prepare an adhesive (4) that has been melted.Next, as shown in Figures 1 and 2, a bobbin material (3) made of 100μ thick aluminum foil is prepared.
After applying the above-mentioned adhesive (4) to the winding portion of the wire rod (2), the wire rod (2) is formed as an esterimide resin 9-color edge material (5).
The adhesive (4) is applied to the wire rod (2), and the wire rod (2) is wound around the winding portion of the bobbin material (3). Then, the adhesive (4) is cured at 200° C. for 2 hours to obtain a speaker voice coil +11 according to this example.
実施例２
本実施例において使用する接着剤としては、８０〜９５
重量％のポリアミノビスマレイミド樹脂と５〜２０重量
％のエポキシ樹脂（０−クレゾールノボラック型エポキ
シ樹脂１００ 重ｉｔ部に対して硬化剤である三フッ化
ホウ素モノエチルアミン５部より成る）が含まれている
樹脂を１−メチル−２−ピリドン溶液に３０重量％熔解
した接着剤（４）を用意する。次に、実施例１と同様に
、上記接着剤（４）をボビン剤（３）の巻線部と線材（
２）に塗布し、所定工程を経て本実施例に係るスピーカ
用ボイスコイルｆｌ）を得る。Example 2 The adhesive used in this example was 80 to 95
% by weight of polyamino bismaleimide resin and 5 to 20% by weight of epoxy resin (consisting of 5 parts of boron trifluoride monoethylamine as a curing agent to 100 parts by weight of 0-cresol novolak type epoxy resin). An adhesive (4) is prepared by dissolving 30% by weight of the resin in a 1-methyl-2-pyridone solution. Next, in the same manner as in Example 1, the adhesive (4) was applied to the winding part of the bobbin material (3) and the wire rod (
2) and goes through a predetermined process to obtain a speaker voice coil fl) according to this embodiment.
実施例３
本実施例において使用する接着剤としては、７０重量％
のポリアミノビスマレイミド樹脂と３０重量％のポリト
リメリットアミド樹脂が含まれている樹脂を１−メチル
−２−ピロリドン溶液に３０重量％熔解した接着剤（４
）を用意する。次に、実施例１と同様に、上記接着剤（
４）をボビン材（３）の巻線部と線材（２）に塗布し、
所定工程を経て本実施例に係るスピーカ用ボイルコイル
（１）を（Ｍる。Example 3 The adhesive used in this example was 70% by weight.
An adhesive (4% by weight) containing 30% by weight of polyamino bismaleimide resin and 30% by weight of polytrimellitamide resin was dissolved in 1-methyl-2-pyrrolidone solution.
). Next, as in Example 1, the above adhesive (
Apply 4) to the winding part of the bobbin material (3) and the wire material (2),
After going through a predetermined process, the speaker boiler coil (1) according to this example is manufactured.
実施例４
本実施例において使用する接着剤としては、３０重量％
のポリアミドマレイミド樹脂と７０重量％のポリトリメ
リントアミド樹脂が含まれている樹脂を１−メチル−２
−ピロリドン溶液に３０重世％熔解した接着剤（４）を
用意する。次に、実施例１と同様に、上記接着剤（４）
をボビン材（３）の巻線部と線材（２）に塗布し、所定
工程を経て本実施例に係るスピーカ用ボイスコイルｆｌ
）を得る。Example 4 The adhesive used in this example was 30% by weight.
1-methyl-2 resin containing 70% by weight of polyamide maleimide resin and 70% by weight of polytrimelantamide resin
- Prepare adhesive (4) dissolved in pyrrolidone solution at 30%. Next, as in Example 1, the adhesive (4) was applied.
is applied to the winding portion of the bobbin material (3) and the wire rod (2), and through a predetermined process, the speaker voice coil fl according to the present example is manufactured.
).
次に、表２に実施例１〜４において使用した接着剤の耐
熱性、ＪＩＳ耐熱区分、接着力、曲げ弾性率を示す。Next, Table 2 shows the heat resistance, JIS heat resistance classification, adhesive strength, and flexural modulus of the adhesives used in Examples 1 to 4.
表 ２
表２から、従来例の接着剤と比較すると、本ボイスコイ
ルで使用する接着剤は、耐熱性と曲げ弾性率が共に大き
いことがわかる。Table 2 From Table 2, it can be seen that the adhesive used in the present voice coil has high heat resistance and flexural modulus when compared with the conventional adhesive.
第３図に、実施例１と２で使用した接着剤の温度に対す
る相対剛性率の変化を測定した結果を示す。第３図で、
曲線りは実施例１の接着剤、曲線Ｅは実施例２の接着剤
である。第３図から、本発明において使用する接着剤は
、高温になっても曲げ弾性率の低下が従来のものより小
さいことがわかる。FIG. 3 shows the results of measuring changes in relative rigidity of the adhesives used in Examples 1 and 2 with respect to temperature. In Figure 3,
The curved line is the adhesive of Example 1, and the curve E is the adhesive of Example 2. From FIG. 3, it can be seen that the adhesive used in the present invention exhibits a smaller decrease in flexural modulus than the conventional adhesive even at high temperatures.
次に、実施例２に係る接着剤を使用した直径２５朋のボ
イスコイルを振動板の口径が１４ｃｍのスピーカに組み
込んで製作したスピーカと比較例としてブチラール−フ
ェノール系接着剤を使用して同様に製作したスピーカに
ついて、周波数特性、ＩＷとＩＯＷ入力時における歪み
特性を測定した結果を第４図に示す。第４図で、曲線Ａ
、曲線Ｂ、曲線Ｃは、それぞれ本発明に係るボイスコイ
ルを使用したスピーカの周波数特性、ＩＷ大入力時歪み
特性、ＩＯＷ入力時の歪み特性である。また、曲線Ｄ、
曲線Ｅ、曲線Ｆは、それぞれ比較例のボイスコイルを使
用したスピーカの周波数特性、ＩＷ大入力時歪み特性、
ＩＯＷ入力時の歪み特性である。周波数特性に関して、
本発明に係るボイスコイルを使用したスピーカは、従来
例と比較してより安定した特性が得られることがわかる
。歪み特性に関して、本発明に係るボイスコイルを使用
したスピーカは、ＩＷ大入力時おいて、曲げ弾性率が大
きいことに基づき、従来のボイスコイルを使用したスピ
ーカと比較して、測定した周波数の略全域にわたって歪
みが小さい。また、ＩＯＷ入力時において、曲げ弾性率
の温度による変化（第３図参照）に対応して、従来のボ
イスコイルを使用したスピーカは、歪みの増加量が著し
いが、本発明に係るボイスコイルを使用したスピーカは
、従来例程大きな歪みの増加を示さない。第３図より、
入力量が更に大きくなれば、本発明に係るボイスコイル
を使用したスピーカと比較例との歪みの差がより大きく
なることが明らかである。Next, a speaker was manufactured by incorporating a voice coil with a diameter of 25 mm using the adhesive according to Example 2 into a speaker with a diaphragm diameter of 14 cm, and as a comparative example, a speaker was manufactured using a butyral-phenol adhesive. FIG. 4 shows the results of measuring the frequency characteristics and distortion characteristics when inputting IW and IOW for the manufactured speaker. In Figure 4, curve A
, curve B, and curve C are the frequency characteristics, distortion characteristics at large IW input, and distortion characteristics at IOW input, respectively, of a speaker using the voice coil according to the present invention. Also, curve D,
Curve E and curve F respectively represent the frequency characteristics of a speaker using the voice coil of the comparative example, the distortion characteristics at high IW input, and
This is the distortion characteristic when inputting IOW. Regarding frequency characteristics,
It can be seen that the speaker using the voice coil according to the present invention has more stable characteristics than the conventional example. Regarding distortion characteristics, the speaker using the voice coil according to the present invention has a large bending elastic modulus at the time of large IW input, and compared to the speaker using the conventional voice coil, the measured frequency is Distortion is small over the entire area. Additionally, when IOW is input, speakers using conventional voice coils experience a significant increase in distortion in response to changes in bending elastic modulus due to temperature (see Figure 3), but speakers using the voice coil according to the present invention The speakers used do not exhibit as large an increase in distortion as the conventional example. From Figure 3,
It is clear that as the input amount becomes larger, the difference in distortion between the speaker using the voice coil according to the present invention and the comparative example becomes larger.
従って本発明により、振動伝達歪みが小さく、特に大入
力時における発熱によっても安定した特性を維持するこ
とができるスピーカ用ボイスコイルが得られる。Therefore, the present invention provides a voice coil for a speaker that has low vibration transmission distortion and can maintain stable characteristics even when heat is generated especially during large input.
上記実施例は、スピーカ用ボイスコイルについて説明し
たが、この他モータ用界磁コイル及びアーマチュアコイ
ル、ソレノイド、リュアモータ用コイル、リフティング
マグ不ソト用−２イル、電値開閉用コイル、ブザー用コ
イル等に適用しＣも高負荷、高出力時のコイルの酬熱性
、強度等の改善を図ることができる。In the above embodiment, a voice coil for a speaker was explained, but in addition to the above, there are also field coils and armature coils for motors, solenoids, coils for lure motors, -2 coils for lifting mags, electric value switching coils, buzzer coils, etc. When applied to C, it is possible to improve the heat exchange performance, strength, etc. of the coil at high loads and high outputs.
発明の効果
本発明により、高入力時あるいは高出力時においても安
定した特性を維持することができる電気機械変換装置用
コイルを得ることができる。Effects of the Invention According to the present invention, it is possible to obtain a coil for an electromechanical transducer that can maintain stable characteristics even at high input or high output.
第１図はスピーカ用ボイスコイルの一部破断圧面図、第
２図はその要部拡大断面図、第３図は従来のボイスコイ
ル及び本発明に係るボイスコイルについて温度に対する
相対剛性率の変化を測定した特性図、第４図は周波数特
性と歪み特性について従来例とともに測定した特性図で
ある。
＋１１はスピーカ用ボイスコイル、（２）は線材、（３
）はボビン材、（４）は接着剤、（５）は絶縁材である
。
同 松 隈 秀 盛、ｌ、−５゛込遍度（６Ｃ）Fig. 1 is a partially broken pressure surface view of a voice coil for a speaker, Fig. 2 is an enlarged sectional view of its main part, and Fig. 3 shows changes in relative rigidity with respect to temperature for a conventional voice coil and a voice coil according to the present invention. FIG. 4 is a diagram showing the measured characteristics of the frequency characteristics and distortion characteristics as well as the conventional example. +11 is the voice coil for the speaker, (2) is the wire, (3
) is a bobbin material, (4) is an adhesive, and (5) is an insulating material. Same Hidemori Matsukuma, l, -5゛ included degree (6C)
Claims (1)
材用の接着剤として、ポリアミノビスマレイミド樹脂が
含まれてなる接着剤を使用したことを特徴とする電気機
械変換装置用コイル。An electromechanical transducer characterized in that an adhesive containing polyamino bismaleimide resin is used as an adhesive for the winding part of the bobbin material or an adhesive for the wire wound around the winding part. coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14163284A JPS6120496A (en) | 1984-07-09 | 1984-07-09 | Coil for electromachanical transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14163284A JPS6120496A (en) | 1984-07-09 | 1984-07-09 | Coil for electromachanical transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6120496A true JPS6120496A (en) | 1986-01-29 |
Family
ID=15296551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14163284A Pending JPS6120496A (en) | 1984-07-09 | 1984-07-09 | Coil for electromachanical transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6120496A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63100036A (en) * | 1986-09-25 | 1988-05-02 | コーニング インコーポレイテッド | Method and equipment for adhering protection coating organic material on glass optical fiber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179215A (en) * | 1981-04-30 | 1982-11-04 | Hitachi Ltd | Thermosetting resin composition |
| JPS58150399A (en) * | 1982-03-02 | 1983-09-07 | Matsushita Electric Ind Co Ltd | Speaker voice coil |
-
1984
- 1984-07-09 JP JP14163284A patent/JPS6120496A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179215A (en) * | 1981-04-30 | 1982-11-04 | Hitachi Ltd | Thermosetting resin composition |
| JPS58150399A (en) * | 1982-03-02 | 1983-09-07 | Matsushita Electric Ind Co Ltd | Speaker voice coil |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63100036A (en) * | 1986-09-25 | 1988-05-02 | コーニング インコーポレイテッド | Method and equipment for adhering protection coating organic material on glass optical fiber |
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