JPS6348603A - Electromagnetic coil for magneto-optical disk device - Google Patents
Electromagnetic coil for magneto-optical disk deviceInfo
- Publication number
- JPS6348603A JPS6348603A JP19051486A JP19051486A JPS6348603A JP S6348603 A JPS6348603 A JP S6348603A JP 19051486 A JP19051486 A JP 19051486A JP 19051486 A JP19051486 A JP 19051486A JP S6348603 A JPS6348603 A JP S6348603A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- coil
- conducted
- synthetic resin
- core
- 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
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 11
- 239000000057 synthetic resin Substances 0.000 claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 10
- 230000020169 heat generation Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
- G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
- G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、光学及び磁気的に情報を記録、再生。[Detailed description of the invention] [Industrial application field] The present invention records and reproduces information optically and magnetically.
消去する光磁気ディスク装置に用いられろ電磁コイルに
関する。The present invention relates to an electromagnetic coil used in a magneto-optical disk device for erasing.
従来の装置は、特開昭５９−１７２１７５号記載のよう
に′な磁コイルの配萱や寸法的な点にのみ着目しており
、いかにして必要磁場強度を確保するかが検討対象とな
っていた。しかし必要磁場強度を確保すると共に起こる
２次的な現象については配慮されていなかった。Conventional devices, as described in JP-A-59-172175, have focused only on the arrangement and dimensions of the magnetic coils, and the focus has been on how to secure the required magnetic field strength. was. However, no consideration was given to secondary phenomena that occur while ensuring the required magnetic field strength.
上記従来技術は性能向上と共に起こる発熱の点について
配慮されておらず、ディスクの不良やコイルの破損につ
ながる信頼性低下の要因となる問題があった。The above-mentioned conventional technology does not take into account the heat generation that occurs with improved performance, and has the problem of reducing reliability, leading to disk defects and coil damage.
本発明の目的は書き込み及び消去時に用いる電磁コイル
の冷却対策を行なうことにより信頼性向上、及び小型化
にある。An object of the present invention is to improve reliability and reduce size by taking measures to cool the electromagnetic coil used during writing and erasing.
上記目的は、コイルでの発熱源から人気中への放熱まで
の経路において、熱等（ｉｌ［ｉ回路で考えた場合の途
中の熱抵抗を低減し、熱伝導を高めることによってコイ
ルの発熱を外部に移動させることによって達成されろ。The above purpose is to reduce the heat generated by the coil by reducing the thermal resistance along the way from the heat generation source in the coil to the heat dissipation to the heat dissipation circuit. This can be achieved by moving it outside.
コイルを合成樹脂でモールドすることによってコイルの
周囲及びコイル間の隙間に樹脂材料が充填される。それ
によって、コイルで発生した熱は伝導によって樹脂の巾
を伝導〕り外部へと放熱することができるので、コイル
表面からの側対、またはコアまで熱伝導しそこからの対
流による放熱の場合に比較して良好な放熱が可能となる
。By molding the coil with synthetic resin, the resin material is filled around the coil and in the gaps between the coils. As a result, the heat generated in the coil can be conducted through the width of the resin and radiated to the outside, so in the case of heat conduction from the coil surface to the side pairs or the core, and heat radiated from there by convection. Comparatively, better heat dissipation is possible.
以下、本発明の一実施例を第１図により説明する。光磁
気ディスクに情報を記録または消去するための電磁コイ
ルは、コイル１とコア２とからなり、コイル１がコア２
の回りに巻き付けられている。コイル１の周囲及び隙間
には高熱伝導率を有する合成樹脂（例えば、熱伝導率３
３Ｘ１０−’ｃａ Ｑ ／ ｑｅｃ ／ ｃＪ ／ ”
Ｃ／ ｃｙｎ のキャストル社製キャストルＡ −１，
５２０や熱伝導率５ 、５ Ｂ Ｔ Ｕ ／ ｈ ｒｆ
ｔ２°Ｆ ｊｎ のアミコン社１ＸＴ−１，１，７８
など）がモールドしてあり、その横方向の端面に放熱フ
ィン４が取付けられている。An embodiment of the present invention will be described below with reference to FIG. An electromagnetic coil for recording or erasing information on a magneto-optical disk consists of a coil 1 and a core 2.
wrapped around. Around the coil 1 and in the gap, synthetic resin with high thermal conductivity (for example, thermal conductivity 3
3X10-'ca Q/qec/cJ/”
C/cyn Castel A-1 manufactured by Castel Co., Ltd.
520 and thermal conductivity 5, 5 B T U / h rf
Amicon 1XT-1,1,78 at t2°F jn
etc.) are molded, and radiation fins 4 are attached to the lateral end faces thereof.
コイル１に電流を流すと、磁場は矢印Ａの向きとなるが
、記録と消去ではその方向は逆となる。When a current is passed through the coil 1, the magnetic field is directed in the direction of arrow A, but the directions are opposite during recording and erasing.
その際に発熱も同時に起こる。熱の移動経路は、コイル
１の発熱源からコア２に伝導して行き、コア２表面から
の側対及び対流によって外気に放熱するもの、コア２が
取付は具によって装置と結合されている場合はそこから
伝導するもの、コイル１からモールドしである合成樹脂
３に伝導して行き合成樹脂３から放熱フィン４に伝導し
、そこから外気へと対流及び側対で放熱していくものと
がある。Fever also occurs at the same time. The heat transfer path is conducted from the heat generation source of the coil 1 to the core 2, and is radiated to the outside air by side coupling and convection from the surface of the core 2. In the case where the core 2 is connected to the device by an attachment tool. The heat is conducted from there, and the heat is conducted from the coil 1 to the molded synthetic resin 3, and from the synthetic resin 3 to the heat radiation fins 4, and from there the heat is radiated to the outside air by convection and side pairs. be.
本実施例によれば、熱の伝導する経路が増えると同時に
発熱源に密接した放熱対策が可能となる。According to this embodiment, the number of heat conduction paths increases and at the same time it becomes possible to take measures for heat dissipation in close proximity to the heat generation source.
本発明の他の実施例を第２図によって説明する。Another embodiment of the present invention will be described with reference to FIG.
コイル１がコア２の周囲に巻き付けられており、コイル
１は熱伝導性の高い合成樹脂によってモールドされてお
り、コイル１の線材の隙間も樹脂によって充填されてい
る。その際、ヒートパイプ５も同時にモールドされ、ヒ
ートパイプ５の放熱端には放熱フィン４が取付けられて
いる。A coil 1 is wound around a core 2, and the coil 1 is molded with a synthetic resin having high thermal conductivity, and the gaps between the wires of the coil 1 are also filled with resin. At this time, the heat pipe 5 is also molded at the same time, and the heat radiation fin 4 is attached to the heat radiation end of the heat pipe 5.
コイル１に通電すると磁場の発生と共に発熱が起こり、
その熱は合成樹脂３を伝導しヒートパイプ５のモールド
部に伝えられる。ヒートパイプ５の内部ではその熱によ
って熱移動媒体の液体が蒸気となり、内部の圧力差によ
って放熱フィン側に移動していき、そこで冷却されてま
た液体に戻り毛細管現象を行わせるウィックによって加
熱部であるモールド部へと戻ってくる。この循環を繰り
返すことによって、コイル１で発生した熱の移動ができ
るので、コイル１．の温度上昇を防止することができる
。When the coil 1 is energized, a magnetic field is generated and heat is generated.
The heat is conducted through the synthetic resin 3 and transferred to the molded portion of the heat pipe 5. Inside the heat pipe 5, the heat transfer medium liquid becomes vapor, and due to the internal pressure difference, it moves to the radiation fin side, where it is cooled and returns to liquid again at the heating section by the wick that causes capillary action. Return to a certain mold department. By repeating this circulation, the heat generated in the coil 1 can be transferred, so that the heat generated in the coil 1. temperature rise can be prevented.
本実施例によれば、高さ方向の寸法をコイル１の高さで
決めることができるので、小型化が可能となり、また？
ｌコイルの支持をヒートパイプ５に兼用させられるので
、部品点数の増加とはならずに効宇的な放熱が可能とな
る。According to this embodiment, since the dimension in the height direction can be determined by the height of the coil 1, miniaturization is possible.
Since the heat pipe 5 can also serve as a support for the l coil, efficient heat dissipation is possible without increasing the number of parts.
本発明によれば、コイル表面からの熱の伝導が新しい経
路として付加されるため外部への熱の移動経路が１曽え
るので、コイルでの発熱が外部に伝わり易くなり、放熱
対策が容易となる効果がある。According to the present invention, heat conduction from the coil surface is added as a new route, which increases the number of heat transfer routes to the outside by one, making it easier for the heat generated in the coil to be transmitted to the outside, making it easier to take measures for heat dissipation. There is a certain effect.
第１図は本発明の−・実施例の電磁コイル部分の斜視図
、第２図はその他の実施例の電磁コイルの斜視図である
。
１・・・コイル、２・・・コア、３・・・合成樹脂、４
・・・放熱フィン、５・・・ヒートパイプ。
、ｌ′＼
代理人 弁理士 小川勝馬〆 。
！、二FIG. 1 is a perspective view of an electromagnetic coil portion according to an embodiment of the present invention, and FIG. 2 is a perspective view of an electromagnetic coil according to another embodiment. 1... Coil, 2... Core, 3... Synthetic resin, 4
...radiating fin, 5...heat pipe. , l'\ Agent: Patent attorney Katsuma Ogawa. ! ,two
Claims (1)
に書き込み及び消去時に用いられる電磁コイルであって
熱伝導率が０．７Ｋａｃａｌ／ｍｈｒ℃以上である合成
樹脂によってモールドしたことを特徴とする光磁気ディ
スク装置用電磁コイル。1. A magneto-optical disk characterized by having an optical head for writing, erasing, and reading information, as well as an electromagnetic coil used for writing and erasing, molded with a synthetic resin having a thermal conductivity of 0.7 Kacal/mhr°C or more. Electromagnetic coil for equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19051486A JPS6348603A (en) | 1986-08-15 | 1986-08-15 | Electromagnetic coil for magneto-optical disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19051486A JPS6348603A (en) | 1986-08-15 | 1986-08-15 | Electromagnetic coil for magneto-optical disk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6348603A true JPS6348603A (en) | 1988-03-01 |
Family
ID=16259357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19051486A Pending JPS6348603A (en) | 1986-08-15 | 1986-08-15 | Electromagnetic coil for magneto-optical disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6348603A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152047A (en) * | 1989-04-14 | 1992-10-06 | Sumitomo Metal Industries, Ltd. | Method of producing laminated metal belt |
| US5287774A (en) * | 1991-07-12 | 1994-02-22 | Wacker-Chemitronic Gesellschaft Fur Elektronik-Grundstoffe Mbh | Method and device for producing seamless ribbon and wire loops, and their use as cuttings tools in ribbon and wire saws |
| EP1085505A1 (en) * | 1998-05-07 | 2001-03-21 | Canon Kabushiki Kaisha | Coil for magnetic head, magnetic head, and magneto-optical recorder |
-
1986
- 1986-08-15 JP JP19051486A patent/JPS6348603A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152047A (en) * | 1989-04-14 | 1992-10-06 | Sumitomo Metal Industries, Ltd. | Method of producing laminated metal belt |
| US5287774A (en) * | 1991-07-12 | 1994-02-22 | Wacker-Chemitronic Gesellschaft Fur Elektronik-Grundstoffe Mbh | Method and device for producing seamless ribbon and wire loops, and their use as cuttings tools in ribbon and wire saws |
| EP1085505A1 (en) * | 1998-05-07 | 2001-03-21 | Canon Kabushiki Kaisha | Coil for magnetic head, magnetic head, and magneto-optical recorder |
| EP1085505A4 (en) * | 1998-05-07 | 2002-07-17 | Canon Kk | Coil for magnetic head, magnetic head, and magneto-optical recorder |
| US6584045B1 (en) | 1998-05-07 | 2003-06-24 | Canon Kabushiki Kaisha | High speed magnetic coil for magneto-optical head |
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