JPH065450A - Manufacture of coiled device - Google Patents

Manufacture of coiled device

Info

Publication number
JPH065450A
JPH065450A JP15975892A JP15975892A JPH065450A JP H065450 A JPH065450 A JP H065450A JP 15975892 A JP15975892 A JP 15975892A JP 15975892 A JP15975892 A JP 15975892A JP H065450 A JPH065450 A JP H065450A
Authority
JP
Japan
Prior art keywords
coil
air
body frame
core coil
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
Application number
JP15975892A
Other languages
Japanese (ja)
Inventor
Noboru Murakami
昇 村上
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.)
SWCC Corp
Original Assignee
Showa Electric Wire and Cable Co
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 Showa Electric Wire and Cable Co filed Critical Showa Electric Wire and Cable Co
Priority to JP15975892A priority Critical patent/JPH065450A/en
Publication of JPH065450A publication Critical patent/JPH065450A/en
Pending legal-status Critical Current

Links

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  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

PURPOSE:To enhance adhesive properties of an air-core coil with a body frame and to improve characteristics of a coiled device by previously coating the coil with thermosetting adhesive, and molding a plastic frame with an outer periphery of the coil. CONSTITUTION:After an air-core coil 3 is coated with adhesive 5, it is allowed to stand at an ambient temperature for several hours. The coil 3 is set to metal in a state that a surface of a thermosetting adhesive 5 is dried. Then, resin for constituting a body frame 1 is injected in a mold, and molded. Thus, thermosetting resin exists on a surface of the coil 3 to be particularly easily peeled from the frame 1, the resin can be strongly adhered to the coil, and even if a heat cycle is applied, both are not easily peeled.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、磁気ディスク装置のボ
イスコイル型駆動部等の製造に適するコイル装置の製造
方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a coil device suitable for manufacturing a voice coil type drive unit of a magnetic disk device.

【0002】[0002]

【従来の技術】磁気ディスク装置においては、その磁気
ヘッドを高速で駆動するためにボイスコイル型の駆動部
が採用される。図3には、このようなボイスコイル型駆
動部に使用されるコイル装置の分解斜視図を示す。図に
おいて、この装置は本体フレーム1とマグネット等から
構成されたヨーク2を組み合わせて構成される。本体フ
レーム1にはヨーク2が貫通するような貫通孔が設けら
れており、そこに空芯コイル3が配置されている。空芯
コイル3は銅線を巻回して構成されたもので、本体フレ
ーム1はこの空芯コイル3を支持するための熱可塑性樹
脂モールドにより構成されたブロックである。
2. Description of the Related Art In a magnetic disk device, a voice coil type drive unit is employed to drive the magnetic head at high speed. FIG. 3 shows an exploded perspective view of a coil device used in such a voice coil type driving unit. In the figure, this device is constructed by combining a main body frame 1 and a yoke 2 composed of a magnet and the like. The body frame 1 is provided with a through hole through which the yoke 2 penetrates, and the air-core coil 3 is arranged therein. The air core coil 3 is formed by winding a copper wire, and the main body frame 1 is a block formed by a thermoplastic resin mold for supporting the air core coil 3.

【0003】ヨーク2は、この本体フレーム1の貫通孔
に挿入され矢印H方向に磁界を形成する。空芯コイル3
に駆動用の電流が流れると、磁界との相互作用によって
矢印Fの方向に力を受けて、本体フレーム1が駆動され
る。この本体フレーム1は磁気ヘッド等を搭載したアー
ムに連結され、磁気ヘッドを図示しない磁気ディスク装
置の記録面に対向させる。
The yoke 2 is inserted into the through hole of the body frame 1 and forms a magnetic field in the direction of arrow H. Air core coil 3
When a driving current flows through the body frame 1, the body frame 1 is driven by a force acting in the direction of arrow F due to the interaction with the magnetic field. The main body frame 1 is connected to an arm on which a magnetic head or the like is mounted, and the magnetic head faces the recording surface of a magnetic disk device (not shown).

【0004】[0004]

【発明が解決しようとする課題】ところで、上記のよう
なコイル装置には、図4(a)に示したような空芯コイ
ル3が使用される。(b)に示す本体フレーム1は、こ
の空芯コイル3を取り巻くように樹脂をインジェクショ
ン成形して製造される。しかしながら、この空芯コイル
3には大きな駆動電流が流れ、高速で往復運動させた場
合、比較的高い温度で発熱する。また、その使用時には
高温となり使用後は冷却され、いわゆるヒートサイクル
が加わる。ここで、空芯コイル3を構成する線材の熱膨
張係数と本体フレーム1を構成する樹脂の熱膨張係数が
著しく相違するため、両者の接合面で剥離を生じる場合
がある。
By the way, in the above coil device, the air-core coil 3 as shown in FIG. 4 (a) is used. The body frame 1 shown in (b) is manufactured by injection molding a resin so as to surround the air core coil 3. However, a large driving current flows through the air-core coil 3, and when it is reciprocated at high speed, it generates heat at a relatively high temperature. Further, the temperature becomes high at the time of use, and it is cooled after use, and a so-called heat cycle is added. Here, since the coefficient of thermal expansion of the wire material that constitutes the air-core coil 3 and the coefficient of thermal expansion of the resin that constitutes the main body frame 1 are significantly different, peeling may occur at the joint surface between them.

【0005】図4(b)に示すように、本体フレーム1
とその周辺に磁界を形成するためのヨーク2A、2B、
2Cとは、わずかなギャップを残して近接配置されてい
る。従って、例えば空芯コイル3と本体フレーム1との
密着力が低下して剥離を生じたような場合、図の破線に
示すように本体フレーム1のみが湾曲して、ヨーク2B
に接触したりするおそれがある。また、空芯コイル3と
本体フレーム1との密着力が低下すると、その共振点が
低下し、使用中に共振によって破壊が生じるという問題
もある。従って、空芯コイル3と本体フレーム1の密着
力が不十分な製品を排除し、特性の良い製品のみを選別
出荷することになり、歩止りが悪くなるといった問題も
あった。本発明は以上の点に着目してなされたもので、
空芯コイルと本体フレームとの密着性を高め特性を向上
させることを目的とするものである。
As shown in FIG. 4B, the body frame 1
And yokes 2A, 2B for forming a magnetic field around the
2C is closely arranged with a slight gap left. Therefore, for example, when the adhesion force between the air-core coil 3 and the main body frame 1 is reduced and peeling occurs, only the main body frame 1 is curved as shown by the broken line in the figure, and the yoke 2B
May come into contact with. Further, if the adhesion force between the air-core coil 3 and the main body frame 1 is lowered, the resonance point is lowered, and there is a problem that the resonance may cause breakage during use. Therefore, products with insufficient adhesion between the air-core coil 3 and the main body frame 1 are excluded, and only products with good characteristics are sorted and shipped, which causes a problem of poor yield. The present invention has been made by focusing on the above points,
The purpose is to enhance the adhesion between the air-core coil and the body frame and improve the characteristics.

【0006】[0006]

【課題を解決するための手段】本発明のコイル装置の製
造方法は、空芯コイルをプラスチック製のフレームで包
囲し、一体化するものにおいて、前記空芯コイルに予め
熱硬化性接着剤を塗布して、当該熱硬化性接着剤が未硬
化のまま、前記プラスチック製のフレームを前記空芯コ
イルの外周にモールド成型することを特徴とするもので
ある。
According to the method for manufacturing a coil device of the present invention, an air-core coil is surrounded by a plastic frame and integrated, and a thermosetting adhesive is applied to the air-core coil in advance. Then, the plastic frame is molded on the outer periphery of the air-core coil while the thermosetting adhesive is still uncured.

【0007】[0007]

【作用】この方法では、空芯コイルに接着剤を塗布し、
この接着剤の表面が乾燥した位の状態で空芯コイルを金
型にセットする。その後本体フレームを樹脂モールド成
型すると、その際に接着剤に加わる熱によって接着剤が
硬化する。これによって、本体フレームと空芯コイルと
は接着剤の力により互いに十分密着する。従って、ヒー
トサイクルが加わった場合にも両者の間で剥離を生じる
ことがなく、耐久性が向上する。
In this method, an adhesive is applied to the air core coil,
The air core coil is set in a mold in a state where the surface of the adhesive is dry. After that, when the main body frame is resin-molded, the adhesive is cured by the heat applied to the adhesive at that time. As a result, the body frame and the air-core coil are sufficiently brought into close contact with each other by the force of the adhesive. Therefore, even when a heat cycle is applied, peeling does not occur between the two and the durability is improved.

【0008】[0008]

【実施例】以下、本発明を図の実施例を用いて詳細に説
明する。図1は本発明のコイル装置製造方法を示す斜視
図である。図において、本発明の方法においては、予め
空芯コイル3を製造した後、この表面に熱硬化性接着剤
5を塗布する。この熱硬化性接着剤5は、例えば本体フ
レーム1をモールド被覆した場合に、剥離を生じやすい
面にのみ塗布する。熱硬化性接着剤5としてはガスを発
生するおそれのない、例えばエポキシ系のものが適当で
ある。また、常温で放置した場合には、表面が乾燥して
も硬化することがなく、100度から200度程度の温
度で硬化が進むような特性のものがよい。
The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view showing a coil device manufacturing method of the present invention. In the figure, in the method of the present invention, after the air core coil 3 is manufactured in advance, the thermosetting adhesive 5 is applied to the surface thereof. The thermosetting adhesive 5 is applied only to the surface where peeling easily occurs when the main body frame 1 is covered with a mold, for example. As the thermosetting adhesive 5, for example, an epoxy type adhesive that does not generate gas is suitable. Further, when left at room temperature, it is preferable that it has a characteristic that it does not cure even if the surface is dried and the curing proceeds at a temperature of about 100 to 200 degrees.

【0009】図2には、本発明の方法を具体的に示した
フローチャートを図示した。図1と図2を用いて本発明
の方法を順に説明する。まず、先に図1で説明したよう
に、空芯コイル3に接着剤5を塗布した後、常温で数時
間放置する(図2のステップS1)。これによって、熱
硬化性接着剤5の表面が乾燥した状態になる。この状態
で図2のステップS2に示すように空芯コイル3を金型
にセットする。接着剤が乾燥するまで待つのは、空芯コ
イル3の上下面に接着剤を塗布した場合に、その接着剤
が金型に付着したりしないようにするためである。
FIG. 2 is a flow chart showing the method of the present invention. The method of the present invention will be described in order with reference to FIGS. 1 and 2. First, as described above with reference to FIG. 1, the adhesive 5 is applied to the air-core coil 3 and then left at room temperature for several hours (step S1 in FIG. 2). As a result, the surface of the thermosetting adhesive 5 becomes dry. In this state, the air-core coil 3 is set in the mold as shown in step S2 of FIG. The reason for waiting for the adhesive to dry is to prevent the adhesive from adhering to the mold when the adhesive is applied to the upper and lower surfaces of the air-core coil 3.

【0010】次に図2のステップS3に示すように、金
型に本体フレーム1を構成する樹脂をインジェクション
してそのモールド成型を実行する。これによって、図1
に示すように空芯コイル3の外周に本体フレーム1が被
覆される。この時、金型の中で高温状態の樹脂が接着剤
5に接触する。そしてそのまま一定時間以上放置すれ
ば、樹脂によって接着剤5が硬化温度に加熱され、硬化
反応が進行して、樹脂と密着する。
Next, as shown in step S3 in FIG. 2, the resin forming the main body frame 1 is injected into the mold and the molding is performed. As a result, FIG.
As shown in FIG. 3, the body frame 1 is coated on the outer circumference of the air-core coil 3. At this time, the resin in a high temperature state contacts the adhesive 5 in the mold. Then, if the resin is left as it is for a certain period of time or longer, the adhesive 5 is heated to the curing temperature by the resin, the curing reaction proceeds, and the resin 5 comes into close contact with the resin.

【0011】本発明は以上の実施例に限定されない。上
記実施例に示した空芯コイルの形状や本体フレームの形
状は、採用される磁気ディスク装置等の形状に合わせて
自由に変更して差し支えない。また接着剤は、高温の樹
脂を接触させることによって接着力を増す反応が進むよ
うな特性のものであればどのようなものを使用しても差
し支えない。
The present invention is not limited to the above embodiments. The shape of the air-core coil and the shape of the main body frame shown in the above embodiment may be freely changed according to the shape of the magnetic disk device or the like adopted. As the adhesive, any adhesive may be used as long as it has a property of advancing the reaction of increasing the adhesive force by bringing it into contact with a high temperature resin.

【0012】[0012]

【発明の効果】以上のように、本発明の製造方法によれ
ば、空芯コイル3と本体フレーム1との特に剥離しやす
い面に熱硬化性接着剤5が存在し、樹脂と空芯コイルと
を互いに強く接着するため、ヒートサイクルが加わって
も両者が容易に剥離することがない。従って、熱膨張係
数の差によって本体フレームが曲がり、ヨークに接触す
るといった問題を防止できる。しかも両者の剥離による
共振点の低下等が防止でき、耐久性の優れた性能のよい
コイル装置が提供できる。
As described above, according to the manufacturing method of the present invention, the thermosetting adhesive 5 is present on the surface of the air core coil 3 and the main body frame 1 which are particularly easily peeled off, and the resin and the air core coil are present. Since they are strongly adhered to each other, they are not easily separated even when a heat cycle is applied. Therefore, it is possible to prevent the problem that the main body frame bends due to the difference in thermal expansion coefficient and comes into contact with the yoke. In addition, it is possible to prevent the resonance point from decreasing due to the separation of the two, and to provide a coil device with excellent durability and performance.

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

【図1】本発明のコイル装置の製造方法実施例を示す斜
視図である。
FIG. 1 is a perspective view showing an embodiment of a method for manufacturing a coil device according to the present invention.

【図2】本発明の方法を説明するフローチャートであ
る。
FIG. 2 is a flow chart illustrating the method of the present invention.

【図3】従来一般のコイル装置の分解斜視図である。FIG. 3 is an exploded perspective view of a conventional general coil device.

【図4】従来装置の問題点を示すもので、(a)は空芯
コイルの斜視図、(b)はコイル装置とヨークとの位置
関係を示す正面図である。
4A and 4B are views showing problems of the conventional device, FIG. 4A is a perspective view of an air-core coil, and FIG. 4B is a front view showing a positional relationship between a coil device and a yoke.

【符号の説明】[Explanation of symbols]

1 本体フレーム 3 空芯コイル 5 熱硬化性接着剤 1 Body frame 3 Air core coil 5 Thermosetting adhesive

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 空芯コイルをプラスチック製のフレーム
で包囲し、一体化するものにおいて、 前記空芯コイルに予め熱硬化性接着剤を塗布して、 当該熱硬化性接着剤が未硬化のまま、前記プラスチック
製のフレームを前記空芯コイルの外周にモールド成型す
ることを特徴とするコイル装置の製造方法。
1. An air core coil is surrounded by a plastic frame to be integrated, wherein a thermosetting adhesive is applied to the air core coil in advance, and the thermosetting adhesive remains uncured. A method for manufacturing a coil device, wherein the plastic frame is molded on the outer circumference of the air-core coil.
JP15975892A 1992-06-18 1992-06-18 Manufacture of coiled device Pending JPH065450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15975892A JPH065450A (en) 1992-06-18 1992-06-18 Manufacture of coiled device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15975892A JPH065450A (en) 1992-06-18 1992-06-18 Manufacture of coiled device

Publications (1)

Publication Number Publication Date
JPH065450A true JPH065450A (en) 1994-01-14

Family

ID=15700623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15975892A Pending JPH065450A (en) 1992-06-18 1992-06-18 Manufacture of coiled device

Country Status (1)

Country Link
JP (1) JPH065450A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100594729B1 (en) * 2005-05-06 2006-07-03 이상화 Device and method of picking laver farming
JP2012526389A (en) * 2009-05-04 2012-10-25 クーパー テクノロジーズ カンパニー Magnetic component assembly
US9202617B2 (en) 2013-07-03 2015-12-01 Cooper Technologies Company Low profile, surface mount electromagnetic component assembly and methods of manufacture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100594729B1 (en) * 2005-05-06 2006-07-03 이상화 Device and method of picking laver farming
JP2012526389A (en) * 2009-05-04 2012-10-25 クーパー テクノロジーズ カンパニー Magnetic component assembly
TWI588849B (en) * 2009-05-04 2017-06-21 古柏科技公司 Laminated magnetic component assembly
US9202617B2 (en) 2013-07-03 2015-12-01 Cooper Technologies Company Low profile, surface mount electromagnetic component assembly and methods of manufacture

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