JPS6159643B2 - - Google Patents
Info
- Publication number
- JPS6159643B2 JPS6159643B2 JP54131217A JP13121779A JPS6159643B2 JP S6159643 B2 JPS6159643 B2 JP S6159643B2 JP 54131217 A JP54131217 A JP 54131217A JP 13121779 A JP13121779 A JP 13121779A JP S6159643 B2 JPS6159643 B2 JP S6159643B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- voice coil
- base material
- heat resistance
- paper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- 229920000784 Nomex Polymers 0.000 claims description 8
- 239000004763 nomex Substances 0.000 claims description 8
- 239000005011 phenolic resin Substances 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 5
- 150000003949 imides Chemical class 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229920006015 heat resistant resin Polymers 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/30—Windings characterised by the insulating material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
【発明の詳細な説明】
この発明はボイスコイルボビンに関し、さらに
詳しくは、耐熱性を向上させたボイスコイルボビ
ンに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a voice coil bobbin, and more particularly to a voice coil bobbin with improved heat resistance.
ボイスコイルボビンは、ボイスコイルの巻芯に
なるもので、ボイスコイルに発生するジユール熱
に十分耐えることが要求され、同時に、振動板に
与える駆動力の損失を少なくするために軽量でな
くてはならない。 The voice coil bobbin is the winding core of the voice coil, and it must be able to sufficiently withstand the heat generated by the voice coil, and at the same time, it must be lightweight to reduce the loss of driving force applied to the diaphragm. .
このボイスコイルボビンは、耐熱性と軽量であ
ることの２点が要求されるので、最も一般的に
は、紙などを基材としてこれに耐熱処理を施し
て、耐熱性の向上を図つているが、ボイスコイル
に過大入力信号があつた場合には、かなりの高温
にさらされるために、発火することがあつて一層
の耐火性が要求されている。また、軽量で肉薄の
ボビンとして軽合金製のものを用いれば、耐熱性
の問題は解決されるが、重量が増すのでボイスコ
イルに発生する駆動力の全部が振動板の振動に使
用されず駆動力の損失が大きくなる。 This voice coil bobbin is required to have two points: heat resistance and light weight, so the most common method is to use paper as a base material and apply heat resistance treatment to it to improve heat resistance. If an excessive input signal is applied to the voice coil, the voice coil will be exposed to considerably high temperatures and may catch fire, so even greater fire resistance is required. In addition, if a light alloy bobbin is used as a lightweight and thin-walled bobbin, the problem of heat resistance can be solved, but since the weight increases, all of the driving force generated in the voice coil is not used to vibrate the diaphragm, which drives the diaphragm. Power loss increases.
そこで、この発明は紙と同様に軽く、しかも、
耐熱性に優れた材料でボイスコイルボビンを形成
しようとするもので、そのために、耐熱性に優れ
た樹脂を基材に含浸させることにより、基材の耐
熱性を補い、温度による寸法変化を抑え、基材に
は軽量さと、樹脂の含浸により基材自体に歪が生
じたりすることや、樹脂の含浸性を要求して、こ
れらを満足させる材料によりボイスコイルボビン
を形成することを特徴とするものである。 Therefore, this invention is as light as paper, and
The idea is to form the voice coil bobbin with a material that has excellent heat resistance.To achieve this, the base material is impregnated with a resin that has excellent heat resistance, supplementing the heat resistance of the base material and suppressing dimensional changes due to temperature. The voice coil bobbin is made of a material that satisfies the requirements for the base material, such as lightness, distortion of the base material itself due to resin impregnation, and resin impregnability. be.
以下、この発明の実施例を添付した図面に沿つ
て説明する。図において符号１はポリアミドポリ
マーを処理したノーメツクスペーパーE54（デユ
ポン社製）を筒形に巻いて形成したボイスコイル
ボビン（以下、ボビンと略称する）で、これに、
ボイスコイル２が巻装され、ノーメツクスペーパ
ーE54は、温度、湿度の影響を受けて伸縮するの
で、ボビン１の基材であるノーメツクスペーパー
E54に伸縮を抑制すると共に、耐熱性に富む樹脂
１ａを含浸したもので形成されている。 Embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure, reference numeral 1 is a voice coil bobbin (hereinafter abbreviated as bobbin) formed by winding Nomex paper E54 (manufactured by Dupont) treated with polyamide polymer into a cylindrical shape.
The voice coil 2 is wound on the Nomex paper E54, which expands and contracts under the influence of temperature and humidity.
It is made of E54 impregnated with resin 1a which suppresses expansion and contraction and is highly heat resistant.
この基材はロールを通さない状態で提供される
ので、前記樹脂を含浸させる際にカレンダロール
掛けして基材に耐熱性に富んだ樹脂を均一に含浸
する。 Since this base material is provided in a state that does not pass through a roll, when impregnating the base material with the resin, it is applied with a calender roll to uniformly impregnate the base material with the highly heat resistant resin.
基材に含浸させる耐熱性樹脂としては、下記の
ものが使用される。 As the heat-resistant resin to be impregnated into the base material, the following ones are used.
１ フエノール樹脂
２ エポキシ樹脂
３ イミド樹脂
これらの樹脂は、単体、あるいは、混合体とし
て用いられ、耐熱グレードに合せて、その量、あ
るいは、混合量が選定される。1 Phenol resin 2 Epoxy resin 3 Imide resin These resins are used alone or as a mixture, and their amounts or mixed amounts are selected depending on the heat-resistant grade.
基紙の成形例を挙げると、下記の通りである。 Examples of molding of the base paper are as follows.
ノーメツクスペーパーE54 ……面積１m2
フエノール樹脂 ……10〜20ｇ
あるいはフエノール樹脂10〜25ｇと、イミド樹
脂10〜25ｇとを混合し、常温で基材に対し含浸さ
せたのち自然乾燥する。この後加熱乾燥して樹脂
を硬化させ所望の耐熱性を得る。 Nomex paper E54...Area: 1m2 Phenol resin...10-20g Alternatively, 10-25g of phenolic resin and 10-25g of imide resin are mixed, impregnated onto a base material at room temperature, and then air-dried. Thereafter, the resin is heated and dried to harden it and obtain the desired heat resistance.
こゝで、得たる基材の耐熱をしらべてみると、
ノーメツクスペーパーE54自体では230〜250℃で
発火しているが、前記例によりフエノール樹脂を
含浸させたものは、300℃まで耐えることが確認
された。 Now, when we examine the heat resistance of the base material obtained, we find that
Nomex paper E54 itself ignites at 230 to 250°C, but it was confirmed in the above example that the paper impregnated with phenolic resin can withstand up to 300°C.
また、フエノール樹脂10〜25ｇと、イミド樹脂
10〜25ｇとの混合樹脂を含浸させた基紙は、350
℃まで耐えた。 Also, 10-25g of phenolic resin and imide resin.
Base paper impregnated with mixed resin with 10~25g
It withstood temperatures up to ℃.
上記の樹脂を含浸させることにより、ノーメツ
クスペーパーE54の温度による伸縮性も抑制され
る。即ち、ノーメツクスペーパーE54は温度40℃
湿度95％では１mm／10cmの膨張であるが、同一条
件ではフエノール樹脂を含浸させた基材にあつて
は、線膨張率０cm／℃とそれぞれ低下している。 By impregnating it with the above-mentioned resin, the temperature-induced expansion and contraction of Nomex paper E54 is also suppressed. In other words, the temperature of Nomex paper E54 is 40℃.
At 95% humidity, the expansion is 1 mm/10 cm, but under the same conditions, in the case of a base material impregnated with phenolic resin, the coefficient of linear expansion is reduced to 0 cm/°C.
以上の説明から明らかなように、この発明のボ
ビンによれば、基材として、ノーメツクスペーパ
ーE54を用い、これに耐熱樹脂として、フエノー
ル、エポキシ、あるいは、イミドなどの樹脂を単
体、あるいは、混合樹脂を含浸させたものを用い
たから、耐熱性の向上と共に、伸縮性を抑制で
き、万一引火しても自己消火性があつてローコス
トで、軽く、耐熱性に富むものが得られる。 As is clear from the above description, according to the bobbin of the present invention, Nomex paper E54 is used as the base material, and a resin such as phenol, epoxy, or imide is used alone or as a heat-resistant resin. Since a material impregnated with a mixed resin is used, it is possible to improve heat resistance, suppress elasticity, and even if it ignites, it has self-extinguishing properties, is low cost, lightweight, and has high heat resistance.
添付図面はこの発明によるボイスコイルボビン
の断面図である。
The accompanying drawing is a sectional view of a voice coil bobbin according to the present invention.
Claims (1)
を用い、これにフエノール樹脂、エポキシ樹脂、
イミド樹脂の中の、少なくとも一つの樹脂を含浸
させて、耐熱性を向上させると共に、温度による
伸縮を抑制したことを特徴とするボイスコイルボ
ビン。1 Synthetic paper Nomex paper E54 as base material
phenolic resin, epoxy resin,
A voice coil bobbin characterized in that it is impregnated with at least one resin among imide resins to improve heat resistance and suppress expansion and contraction due to temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13121779A JPS5655012A (en) | 1979-10-11 | 1979-10-11 | Voice coil bobbin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13121779A JPS5655012A (en) | 1979-10-11 | 1979-10-11 | Voice coil bobbin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5655012A JPS5655012A (en) | 1981-05-15 |
| JPS6159643B2 true JPS6159643B2 (en) | 1986-12-17 |
Family
ID=15052766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13121779A Granted JPS5655012A (en) | 1979-10-11 | 1979-10-11 | Voice coil bobbin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5655012A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62161497U (en) * | 1986-04-02 | 1987-10-14 |
-
1979
- 1979-10-11 JP JP13121779A patent/JPS5655012A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5655012A (en) | 1981-05-15 |
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