JPH0438739A - External magnetic field impressing device - Google Patents
External magnetic field impressing deviceInfo
- Publication number
- JPH0438739A JPH0438739A JP14453090A JP14453090A JPH0438739A JP H0438739 A JPH0438739 A JP H0438739A JP 14453090 A JP14453090 A JP 14453090A JP 14453090 A JP14453090 A JP 14453090A JP H0438739 A JPH0438739 A JP H0438739A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- magnetic
- temperature
- pole piece
- magnetic pole
- 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
- 238000004804 winding Methods 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
Landscapes
- 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 ）
本発明は十として光磁気ディスク装置に用いられる外部
磁界印加装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates primarily to an external magnetic field application device used in a magneto-optical disk device.
（従来の技術 ）
この種の外部磁界印加装置では巻線と磁極Ｊ）゛との、
あるいは磁性板との間には電気絶縁性のモル１ル成形部
材あるいは絶縁デーゾを設置してあって巻線との間で電
気的にショートしないようにしている。(Prior art) In this type of external magnetic field application device, the winding and the magnetic pole J)
Alternatively, an electrically insulating molded member or an insulating diode is installed between the magnetic plate and the winding to prevent electrical short-circuiting between the coil and the winding.
（発明が解決しようとする課題 ）
しかしながら、−１１述の構成では巻線に対して長時間
電流を流していると、巻線に発生したジュウル熱のため
、巻線温度が１−Ｗする。これは巻線を囲む材料が放熱
を妨げるからである。(Problems to be Solved by the Invention) However, in the configuration described in -11, when current is passed through the winding for a long time, the winding temperature increases by 1-W due to Joule heat generated in the winding. This is because the material surrounding the windings prevents heat dissipation.
（発明の目的 ）
本発明は上記ｔｌｆ情に基いてなされたもので、放熱性
に優れた絶縁材料を用いることにより、巻線に発／Ｉ
Ｉ、たジュール熱を磁極片あるいは／および磁性板に効
棒も良く伝達するようにした外部磁界印加装置を提供し
ようとするものである。(Object of the Invention) The present invention was made based on the above-mentioned tlf circumstances, and by using an insulating material with excellent heat dissipation properties, it is possible to
It is an object of the present invention to provide an external magnetic field applying device that can effectively transmit Joule heat to a magnetic pole piece and/or a magnetic plate.
（課題を解決するだめの手段 ）
このため、本発明では磁極Ｊ“１の外周に巻線を捲回す
ると共に、−上記磁極片に磁性板を連結して磁気回路を
構成している外部磁界印加装置において、上記巻線の外
周に接するように電気絶縁性の放熱材を設ｉ＋’ｉシ、
該放熱材の−１＋ｉＬ！巻線の接する而の反対面に上８
１４磁極片または磁性板の少なくとも一方を接するよう
にしている。(Means for Solving the Problem) For this reason, in the present invention, a winding is wound around the outer circumference of the magnetic pole J"1, and a magnetic plate is connected to the magnetic pole piece to form an external magnetic field. In the application device, an electrically insulating heat dissipating material is installed in contact with the outer periphery of the winding,
-1+iL of the heat dissipation material! 8 on the opposite side of the winding
At least one of the 14 magnetic pole pieces or the magnetic plates are in contact with each other.
（作 用 ）
従って、巻線の発生熱は、その巻線が絶縁材で囲まれて
いるにも関わらず、１・記磁極片や磁・Ｖ１扱へ１分に
放出される。このため、在線の温度上＋ｊ１１を軽減で
きる。(Function) Therefore, even though the winding is surrounded by an insulating material, the heat generated in the winding is released to the magnetic pole piece 1 and the magnetic V1 every minute. Therefore, +j11 on the temperature of the existing line can be reduced.
（実施例 ）
以上、本発明の実施例を図面を参照して具体的に説明す
る。第１図おＪ：び第２図において、符弓ｌはボール状
の磁極片であり、その外周には巻線：３が配置されてい
る。また上記磁極片の一端にはチャンネルヘリの磁＋ｌ
根２が取り付けられていて、これによって巻線３は囲ま
れている。この実施例では１−記巻線３はその内周面お
よび１下端面に電気絶縁性の放熱材４ａ、４ｂ、４ｃを
備えていて、内周面の放熱材４ａは１−記磁極片に接し
ている。なお、１． Ｉｊ［：磁性板は巻線を装填した
後、カシメ付けによって１″記巻線を保持する働きをす
る。また、１″、記数熱材は例えば、シリ：コン系のゴ
ムを主成分にファインセラミック系の特殊な配合剤を添
加したものであると良い。(Example) Examples of the present invention will be specifically described with reference to the drawings. In FIGS. 1 and 2, the bow l is a ball-shaped magnetic pole piece, and a winding 3 is arranged around the outer circumference of the pole piece. Also, at one end of the above magnetic pole piece, there is a magnetic +l of the channel edge.
A root 2 is attached by which the winding 3 is surrounded. In this embodiment, the winding 3 (1-) is provided with electrically insulating heat dissipating materials 4a, 4b, 4c on its inner peripheral surface and lower end surface, and the heat dissipating material 4a on the inner circumferential surface is provided on the magnetic pole piece (1). are in contact with each other. In addition, 1. Ij[: After the winding is loaded, the magnetic plate functions to hold the 1" winding by caulking. Also, the 1" and 1" number heating material is made of, for example, silicone-based rubber as the main component. It is preferable that a special compounding agent of fine ceramic type is added.
このようにした巻線；３、磁極片ｌ、磁性板２によって
構成された磁気回路には、巻線に電流をｊノえることで
、電磁力が働く。このとき巻線にはジコール熱が発ノ１
し、シ１１１’！ｕ！される９、シかし、Ｉ記巻線にお
ける熱（ｊ放熱材を介して容易に磁極ハや磁性板に伝達
されるから、その温度トｈ１、を１１容限度内に抑える
ことがてきる。An electromagnetic force acts on the magnetic circuit constituted by the winding wire 3, the magnetic pole piece l, and the magnetic plate 2 by applying a current to the winding wire. At this time, dicole heat is generated in the winding.
Shi-111'! u! 9. However, since the heat in the winding (I) is easily transmitted to the magnetic pole and magnetic plate via the heat dissipation material, the temperature (h1) can be suppressed to within the limit of 11. .
このような構成の外部磁界印加装置の／１１ｄｏ！状態
を第２図に示す温度測定点について測定した結果を以上
に述へる。上記磁極片１の中央部に？’！ＩＩ！ Ｉ長
側定点１を、また磁性板２の裏面（１・而）で温度測定
点１と対向する位置に温度測定点２を定める。また、こ
れとは別に外気温度測定点を用意する（図示せず）。そ
して、上記測定点に熱雷対を粘着テープで固定し、−・
定の電流を上記巻線にＩｊえると、所定時間後、２０−
２４°Ｃに冒温した。そして、温度の安定したところで
測定を山めたのである。/11do! of the external magnetic field application device with such a configuration. The results of measurements made at the temperature measurement points whose conditions are shown in FIG. 2 will be described above. In the center of the above magnetic pole piece 1? '! II! A fixed point 1 on the I long side is set, and a temperature measuring point 2 is set at a position opposite to the temperature measuring point 1 on the back surface (1) of the magnetic plate 2. In addition, an outside temperature measurement point is prepared separately (not shown). Then, fix the thermal lightning pair to the above measurement point with adhesive tape, and -
When a certain current Ij is applied to the above winding, after a certain time, 20-
It was incubated at 24°C. They then increased their measurements when the temperature stabilized.
因に、比較のためポリイミトデーブを上記放熱材の代り
に巻線に取りイ・１けた例を測定した結果、同じ条件で
２７−３１°Ｃに昇温した。Incidentally, for comparison, we measured a 1-digit example in which polyimide Dave was used as a winding instead of the above-mentioned heat dissipating material, and the temperature was raised to 27-31°C under the same conditions.
この結果から、本発明によれば２−９°Ｃ程温度をドげ
ることができた。From this result, according to the present invention, the temperature could be lowered by about 2-9°C.
第：３図に示す実施例では巻線３はその外周にも電気絶
縁ｆ１の放熱材を設けている。特にこの実施例では環状
のキャップ型放熱材４が絹み合わせて川られている。こ
れは金型成形によって加１″できる。In the embodiment shown in FIG. 3, the winding 3 is also provided with a heat dissipating material of electrical insulation f1 on its outer periphery. Particularly in this embodiment, the annular cap-type heat dissipating material 4 is tied together. This can be increased by 1" by molding.
第４図の実施例では巻線３と磁極片ｌおよび磁性板２と
の間に電気絶縁性の放熱材４を充填する方法が採用され
ている。In the embodiment shown in FIG. 4, a method is adopted in which an electrically insulating heat dissipating material 4 is filled between the winding 3, the magnetic pole piece l, and the magnetic plate 2.
（発明の効果 ）
本発明は以上詳述したようになり、巻線の外周を囲む電
気絶縁材を放熱材で構成したので、磁気回路の温度トＷ
を抑えることができ、光磁気ディスク装置における情報
記録、あるいは再生に際して、温度トシ１鴇こ伴う、障
害を避けることができる。(Effects of the Invention) The present invention has been described in detail above, and since the electrical insulating material surrounding the outer periphery of the winding is composed of a heat dissipating material, the temperature of the magnetic circuit can be increased.
This makes it possible to avoid problems associated with temperature fluctuations when recording or reproducing information in a magneto-optical disk device.
第１図は本発明の一実施例を小ず縦断側面れぞれ別の実
施例を示す縦断側面図である。
１００．磁極片 ２１．、磁性板
：３．．．巻線 ４０１．放熱材FIG. 1 is a vertical sectional side view showing different embodiments of one embodiment of the present invention. 100. Magnetic pole piece 21. , magnetic plate: 3. ．． ．． Winding wire 401. heat dissipation material
Claims (1)
磁性板を連結して磁気回路を構成している外部磁界印加
装置において、上記巻線の外周に接するように電気絶縁
性の放熱材を設置し、該放熱材の、上記巻線と接する面
の反対面に上記磁極片または磁性板の少なくとも一方を
接するようにしたことを特徴とする外部磁界印加装置In an external magnetic field application device in which a winding is wound around the outer periphery of a magnetic pole piece and a magnetic plate is connected to the magnetic pole piece to form a magnetic circuit, an electrically insulating heat dissipating device is placed in contact with the outer periphery of the winding. an external magnetic field applying device, characterized in that a material is installed, and at least one of the magnetic pole piece or the magnetic plate is in contact with a surface of the heat dissipating material opposite to a surface in contact with the winding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14453090A JPH0438739A (en) | 1990-06-04 | 1990-06-04 | External magnetic field impressing device |
| US08/059,729 US5361242A (en) | 1990-02-07 | 1993-05-11 | External magnetic field application device including a heat dissipation member and a metal plate for dissipating heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14453090A JPH0438739A (en) | 1990-06-04 | 1990-06-04 | External magnetic field impressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438739A true JPH0438739A (en) | 1992-02-07 |
Family
ID=15364465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14453090A Pending JPH0438739A (en) | 1990-02-07 | 1990-06-04 | External magnetic field impressing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438739A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7051055B1 (en) | 1999-07-09 | 2006-05-23 | Symantec Corporation | Optimized disk storage defragmentation with swapping capabilities |
| US7055055B1 (en) | 1999-04-23 | 2006-05-30 | Symantec Corporation | Write cache flushing method for reducing data corruption |
| US7506013B2 (en) | 1999-07-09 | 2009-03-17 | Symantec Corporation | Disk storage defragmentation |
| US7949665B1 (en) | 2004-11-19 | 2011-05-24 | Symantec Corporation | Rapidly traversing disc volumes during file content examination |
-
1990
- 1990-06-04 JP JP14453090A patent/JPH0438739A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7055055B1 (en) | 1999-04-23 | 2006-05-30 | Symantec Corporation | Write cache flushing method for reducing data corruption |
| US7051055B1 (en) | 1999-07-09 | 2006-05-23 | Symantec Corporation | Optimized disk storage defragmentation with swapping capabilities |
| US7506013B2 (en) | 1999-07-09 | 2009-03-17 | Symantec Corporation | Disk storage defragmentation |
| US7949665B1 (en) | 2004-11-19 | 2011-05-24 | Symantec Corporation | Rapidly traversing disc volumes during file content examination |
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