JPS5827591B2 - magnetic disk device - Google Patents
magnetic disk deviceInfo
- Publication number
- JPS5827591B2 JPS5827591B2 JP54129858A JP12985879A JPS5827591B2 JP S5827591 B2 JPS5827591 B2 JP S5827591B2 JP 54129858 A JP54129858 A JP 54129858A JP 12985879 A JP12985879 A JP 12985879A JP S5827591 B2 JPS5827591 B2 JP S5827591B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- disk
- base
- shroud wall
- shroud
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/021—Containers; Storing means both adapted to cooperate with the recording or reproducing means comprising means for reducing influence of physical parameters, e.g. temperature change, moisture
Description
【発明の詳細な説明】
本発明は複数の磁気ディスクをスペーサを介して積層し
てなるディスク構造体と磁気ディスクを覆うシララウド
を備える磁気ディスク装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic disk device that includes a disk structure formed by stacking a plurality of magnetic disks with spacers interposed therebetween, and a shirarou that covers the magnetic disks.
従来の磁気ディスク装置の一例を第１図に示し説明する
と、第１図は従来の磁気ディスク装置の概略構造の縦断
面を示す構成図である。An example of a conventional magnetic disk device is shown and explained in FIG. 1. FIG. 1 is a configuration diagram showing a longitudinal section of a schematic structure of a conventional magnetic disk device.
図において、１はディスクパックを示し、このディスク
パック１は複数枚の磁気ディスク２ａ＋２ａ′、２ｂを
積層して構成さヘ スピンドル３と共に回転するように
構成されている。In the figure, numeral 1 indicates a disk pack, and this disk pack 1 is constructed by stacking a plurality of magnetic disks 2a+2a', 2b, and is configured to rotate together with a spindle 3.
４はベース、５は前記ディスクパック１を覆うように構
成されたシュラウド壁で、ヘッドパー６およびアクチェ
ータ７もその中に位置するように構成されている。4 is a base, 5 is a shroud wall constructed to cover the disk pack 1, and a head par 6 and an actuator 7 are also located within the shroud wall.
このように構成された装置において、スピンドル３と共
にディスクパック１が回転すると、矢印Ａ、Ａ’で示す
ような循環流が起き、その循環する空気はディスク面と
シュラウド壁５やベース４に接する。In the apparatus configured as described above, when the disk pack 1 rotates together with the spindle 3, a circulating flow as shown by arrows A and A' occurs, and the circulating air comes into contact with the disk surface, the shroud wall 5, and the base 4.
一方、磁気ディスク２ａｓ２ａ’ ＋２ｂの間には矢印
Ｂで示す流れがあり、この流れはシュラウド側壁に接す
る。On the other hand, there is a flow shown by arrow B between the magnetic disks 2as2a'+2b, and this flow is in contact with the shroud side wall.
そして、ディスクパック１が回転すると、シュラウド内
の空気は風損によって温度上昇する。When the disk pack 1 rotates, the temperature of the air within the shroud increases due to windage loss.
この熱はシュラウド壁５とベース４の熱伝導で外気中に
放出されるが、このときの通過熱量はシュラウド内と外
気との温度差とその面積に比例する。This heat is released into the outside air by heat conduction between the shroud wall 5 and the base 4, and the amount of heat passing through at this time is proportional to the temperature difference between the inside of the shroud and the outside air and its area.
したがって、温度の低い外気と接しているシュラウド壁
５やベース４は温度が低くなる。Therefore, the temperature of the shroud wall 5 and base 4, which are in contact with the low temperature outside air, becomes low.
そして、循環流Ａ、Ａ’は上記のような冷却効果の高い
シュラウド壁やベース面の大きな面積に接するため、強
く冷却される。Since the circulating flows A and A' contact a large area of the shroud wall and base surface, which have a high cooling effect as described above, they are strongly cooled.
一方、循環流Ｂはシュラウド壁と接する面積が小さいた
め冷却効果は弱い。On the other hand, the cooling effect of the circulating flow B is weak because the area in contact with the shroud wall is small.
よって、最上面と最下面磁気ディスク２ａ１２ａ’
は磁気ディスク２ｂより低温になり、磁気ディスク２ａ
１２８’ と磁気ディスク２ｂとの間の熱膨張量に差
が発生する。Therefore, the uppermost surface and the lowermost surface magnetic disk 2a12a'
becomes lower temperature than the magnetic disk 2b, and the magnetic disk 2a
A difference occurs in the amount of thermal expansion between the magnetic disk 128' and the magnetic disk 2b.
そして、この各磁気ディスクの熱膨張量の差は、トラッ
ク位置の変動（トラックずれ）となる。This difference in the amount of thermal expansion of each magnetic disk results in a variation in track position (track deviation).
本発明は以上の点に鑑み、このような問題を解決すると
共にかかる欠点を除去すべくなされたもので、その目的
は熱膨張も均一 され、トラック位置の変動（トラック
ずれ）を防止することができる磁気ディスク装置を提供
することにある。In view of the above points, the present invention has been made to solve these problems and eliminate such drawbacks.The purpose of the present invention is to uniformize thermal expansion and prevent fluctuations in track position (track deviation). The objective is to provide a magnetic disk device that can.
本発明は、シュラウド壁やベースに対向している磁気デ
ィスクと他の磁気ディスクの温度不均一に起因するトラ
ックずれを防止するために、磁気ディスク２ ａ ＋
２ ａ’ とシュラウド壁５およびベース４との間に
仕切板を設置し、磁気ディスク２ａ＋２ａ’の過冷を防
止して磁気ディスク２ａ１２８’ と磁気ディスク２
ｂとの間の温度差をなくすようにしたものである。The present invention is designed to prevent track deviation caused by temperature nonuniformity between the magnetic disk facing the shroud wall or base and other magnetic disks.
A partition plate is installed between the shroud wall 5 and the base 4 to prevent the magnetic disks 2a+2a' from being overcooled, thereby separating the magnetic disks 2a128' and the magnetic disks 2.
It is designed to eliminate the temperature difference between
以下、図面に基づき本発明の実施例を詳細に説明する。Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第２図は本発明による磁気ディスク装置の一実施例の縦
断面を示す構成図である。FIG. 2 is a configuration diagram showing a longitudinal section of an embodiment of a magnetic disk device according to the present invention.
第２図において第１図と同一符号のものは相当部分を示
し、８・８′はシュラウド壁５とこのシュラウド壁５と
対面するディスク面との間およびベース４とこのベース
４と対面するディスク面との間にそれぞれ設置さへ空気
流のシュラウド壁５およびベース４との接触を制限する
仕切板である。In FIG. 2, the same reference numerals as in FIG. 1 indicate corresponding parts, and 8 and 8' are between the shroud wall 5 and the disk surface facing the shroud wall 5, and between the base 4 and the disk facing the base 4. A partition plate is installed between the shroud wall 5 and the base 4 to restrict air flow from coming into contact with the shroud wall 5 and the base 4, respectively.
そして、この仕切板８，８′は磁気ディスク面とほぼ全
面に亘り仕切る面積をもたせると効果的である。It is effective if the partition plates 8, 8' have an area that covers almost the entire surface of the magnetic disk.
つぎにこの第２図に示す実施例の作用を説明する。Next, the operation of the embodiment shown in FIG. 2 will be explained.
まず、スピンドル３が回転すると、磁気ディスク２ａ、
２ａ 、２ｂを積層したディスクパック１が回転し、
通常回転に達すると、アクチェータ７によってヘッドパ
ー６が位置決めされる。First, when the spindle 3 rotates, the magnetic disk 2a,
The disk pack 1 in which 2a and 2b are stacked rotates,
When normal rotation is reached, the head par 6 is positioned by the actuator 7.
そしてディスクパック１が回転すると、図中の矢印Ｃ２
Ｃ′の空気流が発生し、この循環流空気流ｃ、ｃ’は仕
切板８，８′によって冷却されているシュラウド壁やベ
ース面との接触を制限されるために、循環流Ｂとほぼ同
じ条件になり、磁気ディスク２ａ、２ａ 、２ｂの温
度の均一性を高める。Then, when the disk pack 1 rotates, the arrow C2 in the figure
An air flow C' is generated, and these circulating air flows c and c' are almost completely different from the circulating flow B because their contact with the shroud wall and base surface which are cooled by the partition plates 8 and 8' is restricted. The same conditions will be maintained, and the temperature uniformity of the magnetic disks 2a, 2a, and 2b will be improved.
さらに、仕切板８，８′に熱伝導率の小さい材料を用い
れば、温度差をさらに減少することができる。Furthermore, if a material with low thermal conductivity is used for the partition plates 8, 8', the temperature difference can be further reduced.
なお、実験結果によれば、循環流Ａ、Ａ’と循環流Ｂと
の温度差が１℃以上であるのに対し、仕切板８，８′を
用いると循環流空気流ｃ、ｃ’と循環流Ｂの空気との温
度差は０．５℃以内に低減することができた。According to the experimental results, the temperature difference between the circulating air flows A and A' and the circulating air flow B is 1°C or more, whereas when the partition plates 8 and 8' are used, the temperature difference between the circulating air flows c and c' The temperature difference between circulating flow B and air could be reduced to within 0.5°C.
このように、仕切板８，８′を用いることにより、装置
運転後にディスクパック１の温度が徐々に上昇しても、
磁気ディスク２ ａ ＋ ２ ａ’と磁気ディスク２ｂ
との間に発生する温度差が微小であるから、膨張量も均
一化さヘ トラックずれを防止することができる。In this way, by using the partition plates 8, 8', even if the temperature of the disk pack 1 gradually increases after the device is operated,
Magnetic disk 2a + 2a' and magnetic disk 2b
Since the temperature difference that occurs between the two is minute, the amount of expansion is made uniform and track deviation can be prevented.
そして、この仕切板８，８′はシュラウド壁５やベース
４に密着しないように設置した方が効果は大きいが、仕
切板材として熱伝導率の極めて小さいものを使用する場
合には、密着させてもよいことは云うまでもない。The effect will be greater if the partition plates 8 and 8' are installed so that they do not come into close contact with the shroud wall 5 or the base 4, but if a material with extremely low thermal conductivity is used as the partition plate material, it is better to install them so that they do not come into close contact with the shroud wall 5 or the base 4. Needless to say, it's a good thing.
以上説明したように、本発明によれば、装置運転後にデ
ィスクパックの温度が徐々に上昇しても、磁気ディスク
に発生する温度差が微少であるから、熱膨張量も均一化
され、トラック位置の変動（トラックずれ）を防＋ｈす
ることができるので、実用上の効果は極めて犬である。As explained above, according to the present invention, even if the temperature of the disk pack gradually increases after the device is operated, the temperature difference generated in the magnetic disk is small, so the amount of thermal expansion is made uniform, and the track position It is possible to prevent fluctuations (track deviation) in +h, so the practical effect is extremely significant.
第１図は従来の磁気ディスク装置の一例の縦断面を示す
構成図、第２図は本発明による磁気ディスク装置の一実
施例の縦断面を示す構成図である。
１・・・・・・ディスクパック、２ａ ＋ ２ａ’
＋ ２ｂ・・・・・・磁気ディスク、４・・・・・・ベ
ース、５・・・・・・シュラウド壁、８，８′ ・・・
・・・仕切板。FIG. 1 is a configuration diagram showing a longitudinal section of an example of a conventional magnetic disk device, and FIG. 2 is a configuration diagram showing a longitudinal section of an embodiment of a magnetic disk device according to the present invention. 1... Disc pack, 2a + 2a'
+ 2b...Magnetic disk, 4...Base, 5...Shroud wall, 8, 8'...
...Partition board.
Claims (1)
るディスク構造体と磁気ディスクを覆うシュラウドを備
える磁気ディスク装置において、シュラウド壁とこのシ
ュラウド壁と対面するディスク面との間に、前記ディス
ク面のほぼ全面を仕切り、空気流のシュラウド壁との接
触を制限する仕切板を設置し、かつべ一気とこのベース
と対面するディスク面との間に、前記ディスク面のほぼ
全長を仕切り、空気流のベースとの接触を制限する仕切
板を設置したことを特徴とする磁気ディスク装置。1. In a magnetic disk device comprising a disk structure formed by stacking a plurality of magnetic disks with spacers interposed therebetween and a shroud that covers the magnetic disks, there is a gap between the shroud wall and the disk surface facing the shroud wall. A partition plate is installed to partition almost the entire surface and limit contact of the air flow with the shroud wall, and a partition plate is installed that partitions almost the entire length of the disk surface between the base and the disk surface facing the air flow. A magnetic disk device characterized by having a partition plate installed to limit contact with a base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54129858A JPS5827591B2 (en) | 1979-10-11 | 1979-10-11 | magnetic disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54129858A JPS5827591B2 (en) | 1979-10-11 | 1979-10-11 | magnetic disk device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5654672A JPS5654672A (en) | 1981-05-14 |
| JPS5827591B2 true JPS5827591B2 (en) | 1983-06-10 |
Family
ID=15020001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54129858A Expired JPS5827591B2 (en) | 1979-10-11 | 1979-10-11 | magnetic disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827591B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58125383U (en) * | 1982-02-19 | 1983-08-25 | 日本サ−ボ株式会社 | multipolar slip ring |
| JPS5955874U (en) * | 1982-08-31 | 1984-04-12 | 株式会社東海理化電機製作所 | slip ring |
| JPS6168877A (en) * | 1984-04-27 | 1986-04-09 | 田中貴金属工業株式会社 | Method of producing slip ring assembly |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1486070A (en) * | 1975-04-02 | 1977-09-14 | Ibm | Magnetic disc file including a clean gas system |
| JPS5322719A (en) * | 1976-08-16 | 1978-03-02 | Fujitsu Ltd | Magnetic disc device |
-
1979
- 1979-10-11 JP JP54129858A patent/JPS5827591B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5654672A (en) | 1981-05-14 |
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