JPS62184685A - Magnetic disc device - Google Patents
Magnetic disc deviceInfo
- Publication number
- JPS62184685A JPS62184685A JP2584686A JP2584686A JPS62184685A JP S62184685 A JPS62184685 A JP S62184685A JP 2584686 A JP2584686 A JP 2584686A JP 2584686 A JP2584686 A JP 2584686A JP S62184685 A JPS62184685 A JP S62184685A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- magnetic disk
- breathing
- breathing hole
- flow path
- 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
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 32
- 239000003463 adsorbent Substances 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 40
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 238000011045 prefiltration Methods 0.000 abstract description 7
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 27
- 230000007246 mechanism Effects 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 3
- 239000011553 magnetic fluid Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 101000606504 Drosophila melanogaster Tyrosine-protein kinase-like otk Proteins 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- YPWRJNLSEWKOGW-UHFFFAOYSA-N 2,5-dimethyl-4-sulfamoylfuran-3-carboxylic acid Chemical compound CC=1OC(C)=C(S(N)(=O)=O)C=1C(O)=O YPWRJNLSEWKOGW-UHFFFAOYSA-N 0.000 description 1
- 241001589086 Bellapiscis medius Species 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、信頼性を高めた密閉形の磁気ディスク装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sealed magnetic disk device with improved reliability.
磁気ディスク装置は、その記録密度が磁気ディスク媒体
面と記録再生ヘッドとの間の距離（磁気ディスクの浮上
すきま）が小さければ小さいほど高くなるため、現状で
は磁気ヘッドの浮上すきまはますます小さくなってきて
いる。磁気ディスク装置の進歩は、より微小な浮上すき
まをいかに安定に、高信頼に保つかという技術の向上に
よっていると言っても過言ではない。磁気ディスク媒体
と磁気ヘッドを収容した磁気ディスク装置の内部を完全
な清掃状態に保つことは、磁気ヘッドの安定浮上のため
に最も重要な課題のひとつである。The recording density of a magnetic disk device increases as the distance between the magnetic disk medium surface and the recording/reproducing head (the flying clearance of the magnetic disk) decreases, so currently the flying clearance of the magnetic head is becoming smaller and smaller. It's coming. It is no exaggeration to say that progress in magnetic disk drives is due to improvements in technology for maintaining even smaller flying gaps stably and with high reliability. Keeping the inside of a magnetic disk device that houses a magnetic disk medium and a magnetic head in a completely clean state is one of the most important issues for stable flying of the magnetic head.
そこで、これを実現するために、最近の磁気ディスク装
置では、磁気ディスク媒体、磁気ヘッド及び磁気ヘッド
位置決め機構等を密閉構造体内に収容し、外部からの塵
埃の混入を防ぐ構造が採られている。To achieve this, recent magnetic disk drives adopt a structure in which the magnetic disk medium, magnetic head, magnetic head positioning mechanism, etc. are housed in a sealed structure to prevent dust from entering from the outside. .
第３図はこの種の従来の密閉構造形の磁気ディスク装置
の概略を示す断面図である。１はベース、２はカバーで
あり、それらの結合部はＯリング或いはガスケット等で
シールされ、両者により密閉容器が形成されている。３
はスピンドルハブ、４はそのスピンドルハブ３に積層さ
れた磁気ディスク媒体、５はスピンドルシャフトである
。６はベース１に対してスピンドルシャフト５を支える
軸受であり、７はベース１とスピンドルシャフト５との
空隙をシールする磁性流体シール機構である。FIG. 3 is a sectional view schematically showing this type of conventional magnetic disk device with a closed structure. Reference numeral 1 indicates a base, and reference numeral 2 indicates a cover, and their joints are sealed with O-rings, gaskets, etc., and both form a closed container. 3
4 is a spindle hub, 4 is a magnetic disk medium stacked on the spindle hub 3, and 5 is a spindle shaft. 6 is a bearing that supports the spindle shaft 5 with respect to the base 1, and 7 is a magnetic fluid sealing mechanism that seals the gap between the base 1 and the spindle shaft 5.
８はスピンドルモータのロータ、９はスピンドルモータ
のステータ、１０は磁気ヘッド位置決め機構、１１は先
端に磁気ヘッド（第３図では省略している。）を搭載し
たベッドアームである。8 is a rotor of the spindle motor, 9 is a stator of the spindle motor, 10 is a magnetic head positioning mechanism, and 11 is a bed arm on which a magnetic head (not shown in FIG. 3) is mounted at the tip.
一方、１００は密閉構造体の内圧を外気と同じ圧力に保
つだめの呼吸穴、１０１はその呼吸穴１００を通じて出
入りする空気の塵埃を除去する高性能フィルタ（呼吸フ
ィルタ）、１０２は呼吸穴１００及び高性能フィルタ１
０１を保護するプレフィルタである。On the other hand, 100 is a breathing hole that maintains the internal pressure of the sealed structure at the same pressure as the outside air, 101 is a high-performance filter (breathing filter) that removes dust from the air that enters and exits through the breathing hole 100, and 102 is a breathing hole 100 and High performance filter 1
This is a pre-filter that protects 01.
このような磁気ディスク装置では、密閉構造体の結合部
が上記したように０リング或いはガスケットで、またベ
ース１とスピンドルシャフト５との空隙が磁性流体でシ
ールされているため、呼吸穴１００、高性能フィルタ１
０１、プレフィルタ１０２を除いて、内部は外気と完全
に遮断されている。In such a magnetic disk drive, the connecting portion of the sealed structure is an O-ring or a gasket as described above, and the gap between the base 1 and the spindle shaft 5 is sealed with a magnetic fluid, so that the breathing hole 100 and the high Performance filter 1
01, the interior is completely shut off from the outside air except for the pre-filter 102.
呼吸穴１００は磁気ディスク装置の運転時と停止時或い
は環境温度の変化に対応して変化する内圧を外気とほぼ
等しくするために設けられるもので、磁気ディスク媒体
４の回転によって生じる内部圧力の分布の最も低圧とな
る位置の近傍に配設することにより、密閉容器内の圧力
を装置の運転中、常に外気に対して若干の陽圧に保つこ
とができ、これにより外部からの塵埃の混入をより一層
完全に防ぐことが可能となる。The breathing hole 100 is provided in order to make the internal pressure, which changes during operation and stop of the magnetic disk device or in response to changes in environmental temperature, approximately equal to the outside air, and is designed to adjust the internal pressure distribution caused by the rotation of the magnetic disk medium 4. By placing the container near the lowest pressure point, the pressure inside the sealed container can always be maintained at a slightly positive pressure relative to the outside air while the device is operating, thereby preventing dust from entering from the outside. This allows for even more complete prevention.
呼吸穴１００を通じて入る空気は、高性能フィルタ（必
要に応じて多重化される。）によって濾過されるため、
磁気ディスク装置の内部に塵埃が混入することは避けら
れる。Air entering through the breathing holes 100 is filtered by high performance filters (multiplexed if necessary);
This prevents dust from entering the inside of the magnetic disk drive.
しかし、床面の清掃に用いられるワックス等から発散さ
れる有機溶剤のミストやレーザプリンタに用いられるト
ナーのような超微粒子塵埃或いは自動車の排気ガス等に
含まれる微量の腐蝕性ガスに対しては、前述のような濾
紙を用いたフィルタでは濾過することができず、通過し
てしまう欠点があった。However, it cannot be used against organic solvent mist emitted from wax used to clean floors, ultrafine dust such as toner used in laser printers, or trace amounts of corrosive gas contained in automobile exhaust gas. However, the above-mentioned filter using filter paper has the disadvantage that it cannot be filtered, but instead passes through the filter.
このような微粒子が混入すると、その微粒子は磁気ディ
スク媒体或いは磁気ヘッドに付着・成長し、磁気ヘッド
と磁気ディスク媒体とが接触して、いわゆるヘッドクラ
ッシュを引き起こす危険性が生じる。また、腐蝕性ガス
が混入すると、内部構成部品の導通不良等の電気的障害
だけでなく、部品の腐蝕による内部塵埃の発生や磁性媒
体の特性劣化等の各種障害の発生の原因となる危険性が
ある。When such fine particles are mixed in, the fine particles adhere to and grow on the magnetic disk medium or the magnetic head, and there is a risk that the magnetic head and the magnetic disk medium will come into contact with each other, causing a so-called head crash. In addition, if corrosive gas gets mixed in, there is a risk that it will not only cause electrical problems such as poor continuity of internal components, but also various problems such as internal dust generation due to corrosion of parts and deterioration of magnetic media characteristics. There is.
この欠点を解決するひとつの方法として、特開昭５９−
２２７３号に、カバーによって形成された密閉部屋の空
気の流通路に活性炭を有するフィルタを内設させた磁気
ディスク装置が開示されている。As one method to solve this drawback,
No. 2273 discloses a magnetic disk device in which a filter containing activated carbon is installed in an air flow path in a closed room formed by a cover.
第４図はその概略を示す断面図であり、１０３はカバー
２に内設した活性炭１０４の収納箱であり、１０５は収
納箱１０３に設けた空気穴から活性炭１０４が排出しな
ように設置したフィルタ（濾紙）である。FIG. 4 is a cross-sectional view schematically showing the structure, and 103 is a storage box for activated carbon 104 installed inside the cover 2, and 105 is a storage box provided in the storage box 103 to prevent the activated carbon 104 from being discharged from the air hole. It is a filter (filter paper).
このように構成すると、呼吸穴１００を通じて入る外気
は、活性炭１０４を介して磁気ディスク装置内部に流れ
込むことになる。活性炭は微小なミストや特定のガスを
吸着するので、前述のような微粒子やガスが外気に混入
された場合でも除去することができる。With this configuration, outside air entering through the breathing hole 100 flows into the inside of the magnetic disk device via the activated carbon 104. Activated carbon adsorbs minute mist and specific gases, so even if the aforementioned particles or gases are mixed into the outside air, they can be removed.
しかし、外気に混入する有害なミストや微粒子が特定さ
れる場合には、それを効率良く吸着する活性炭を設置す
れば良いが、特に腐蝕性ガスを対象とする場合、磁気デ
ィスク装置を設置する環境によって腐蝕性ガスの種類、
濃度が異なる場合が多く、更には同じ設置場所であって
も設置建物の環境条件が、例えば近隣での工場の新設、
或いは交通量の急増等によって変化し得る。However, if harmful mists or fine particles mixed in the outside air are identified, activated carbon can be installed to efficiently adsorb them, but especially when corrosive gases are targeted, the environment in which the magnetic disk drive is installed Depending on the type of corrosive gas,
The concentration often differs, and even if the installation location is the same, the environmental conditions of the building where it is installed may be different, for example, due to the construction of a new factory nearby, etc.
Or it may change due to sudden increase in traffic volume, etc.
ところで、活性炭に代表されるガス吸着剤等には、吸着
ガスによって各種のものがあり、例えば通常の活性炭は
低沸点炭化水素、アンモニア、ＮＯ９等の吸着能力は極
めて低い。また、例えばアンモニアを脱臭するためには
、素材に硫酸処理を行った吸着剤が適している。このよ
うに、対象ガスによってその最適な活性炭の選定が重要
であることは、例えば文献「空気清浄第１０巻第６号Ｐ
１２」等にも詳述さ丸ている。By the way, there are various kinds of gas adsorbents such as activated carbon, depending on the adsorbed gas. For example, ordinary activated carbon has extremely low adsorption capacity for low-boiling hydrocarbons, ammonia, NO9, etc. Furthermore, for example, in order to deodorize ammonia, an adsorbent whose material is treated with sulfuric acid is suitable. In this way, the importance of selecting the most suitable activated carbon depending on the target gas is shown, for example, in the literature "Air Cleaner Vol. 10 No. 6 P.
12" etc. are also detailed.
第４図に示す従来の、活性炭を有するフィルタが内設さ
れた磁気ディスク装置では、外部環境の変化に応じて活
性炭の種類を変える必要が生じた場合、或いは外気に含
まれる有害ガスの濃度が高まって吸着能力が低下し、活
性炭を交換する必要が生じた場合には、活性炭フィルタ
がカバー２に内設されているため、カバー２をベース１
から外す必要がある。In the conventional magnetic disk drive equipped with a filter containing activated carbon as shown in Fig. 4, when it becomes necessary to change the type of activated carbon in response to changes in the external environment, or when the concentration of harmful gases contained in the outside air increases. If it becomes necessary to replace the activated carbon due to increased adsorption capacity, the activated carbon filter is installed inside the cover 2, so if the activated carbon filter is installed inside the cover 2, replace the cover 2 with the base 1
It is necessary to remove it from the
即ち、清掃状態に保たれている密閉容器を外気に対して
完全に開放しなければならないために、この作業はディ
スク装置の組立工場と同じ清掃環境で行なうことが要求
される。通常、磁気ディスク装置の設置場所には、完全
なりリーンルームは無く、この場合磁気ディスク装置を
工場に持ち帰り、上記の作業をしなければならない。That is, since the sealed container kept in a clean state must be completely opened to the outside air, this work must be carried out in the same cleaning environment as the disk device assembly factory. Usually, there is no completely lean room at the location where the magnetic disk drive is installed, and in this case, the magnetic disk drive must be taken back to the factory and the above-mentioned work must be carried out.
更に、磁気ディスク装置のベース１とカバー２の結合部
の開放や再結合は、ベースＩに微小な歪を生じさせ、精
密な位置決めを行なうヘッド位置決め機構１０の再現性
を著しく悪化させる危険性がある。Furthermore, opening and reconnecting the joint between the base 1 and the cover 2 of the magnetic disk drive causes a slight distortion in the base I, and there is a risk that the reproducibility of the head positioning mechanism 10, which performs precise positioning, will be significantly deteriorated. be.
即ち、サブミクロンの精度で記録トラックに対して位置
決めするヘッド位置決め機構１０の性能は、温度上昇に
よって生じる微小な変形によって劣化することが知られ
ており、この分野の技術者の間では“熱オフトラック対
策”として重要な技術課題となっているが、一度結合し
たベース・カバーの歪み状態が、開放再結合されると異
なる歪状態となり、上記“熱オフトラック”と同じオフ
トラックを生じることになる。従って、通常、ベースと
カバーを再結合した場合には、磁気ディスク媒体上に記
録された各種情報を再度イニシャライズすることが必要
となる。That is, it is known that the performance of the head positioning mechanism 10, which positions the recording track with submicron precision, deteriorates due to minute deformations caused by temperature rise, and engineers in this field call it a "thermal off". This is an important technical issue as a countermeasure against thermal tracks, but once the base and cover are combined, the distortion state becomes different when they are released and recombined, resulting in the same off-track as the above-mentioned "thermal off-track". Become. Therefore, when the base and cover are recombined, it is usually necessary to re-initialize the various information recorded on the magnetic disk medium.
以上説明したように、従来の装置では、活性炭の交換に
必要な作業が膨大なものとなり、ひいては交換時間、交
換コストが極めて大となるという重大な欠点を有してい
た。As explained above, the conventional apparatus has the serious drawback that the work required to replace the activated carbon is enormous, and the replacement time and replacement cost are extremely large.
本発明の目的は、上記した従来の欠点を解決し、ガス吸
着剤を交換する必要が生じた場合でも、極めて容易且つ
信頼性を損なわずに、その交換作業を行なうことができ
るようにした磁気ディスク装置を提供することである。The object of the present invention is to solve the above-mentioned conventional drawbacks, and to provide a magnetic material that allows the gas adsorbent to be replaced extremely easily and without impairing reliability, even if it becomes necessary to replace the gas adsorbent. The objective is to provide a disk device.
このために本発明は、情報を記録する磁気ディスク媒体
と該媒体に情報を記録・再生させる磁気ヘッドとを密閉
構造体内に収容し、該密閉構造体内部の気圧を外気とほ
ぼ等しく調整するための呼吸穴と該呼吸穴より混入する
塵埃を濾過する呼吸フィルタとを備えた密閉形の磁気デ
ィスク装置において、外気から上記呼吸穴及び上記呼吸
フィルタに通じる流路を設け、該流路中の上記外気側に
ガス吸着剤を収納して構成している。To this end, the present invention accommodates a magnetic disk medium for recording information and a magnetic head for recording and reproducing information on the medium in a sealed structure, and adjusts the air pressure inside the sealed structure to be approximately equal to the outside air. In a sealed magnetic disk drive equipped with a breathing hole and a breathing filter that filters out dust that enters through the breathing hole, a flow path is provided that leads from the outside air to the breathing hole and the breathing filter, and the It is constructed by storing a gas adsorbent on the outside air side.
以下、本発明の実施例について説明する。第１図はその
一実施例を示す断面図であり、第３図乃至第４図に示し
たものと同一のものには同一の符号を附した。本実施例
では、呼吸穴１００、高性能ツイスタ１０１、プレフィ
ルタ１０２の外側に対して、つまりカバー２の外側に対
して、活性炭等のガス吸着剤１０６を内蔵した収納箱１
０７を設け、この収納箱１０７に外気と通じる通気穴１
０８を形成して、この通気穴１０８により外気から呼吸
穴１００、高性能フィルタ１０１に通じる流路を構成し
、ガス吸着剤１０６がその流路中に入るようにしている
。Examples of the present invention will be described below. FIG. 1 is a sectional view showing one embodiment of the present invention, and the same parts as shown in FIGS. 3 and 4 are given the same reference numerals. In this embodiment, a storage box 1 containing a gas adsorbent 106 such as activated carbon is placed on the outside of the breathing hole 100, the high-performance twister 101, and the pre-filter 102, that is, on the outside of the cover 2.
07 is provided, and this storage box 107 is provided with a ventilation hole 1 that communicates with the outside air.
08, and the ventilation hole 108 constitutes a flow path leading from the outside air to the breathing hole 100 and the high-performance filter 101, and the gas adsorbent 106 enters the flow path.
このような構造になっているため、ガス吸着剤１０６の
交換の必要が生じた場合、磁気ディスク装置のカバー２
をベース１と結合した状態のままで交換作業を行なうこ
とができる。即ち、第１図に示す通り、ガス吸着剤１０
６の収納箱１０７がカバー２に外設されており、かつ収
納箱１０７を取り外した状態でも、呼吸穴１００に対し
て高性能フィルタ１０１が機能しているため、ガス吸着
剤１０６の交換作業は完全クリーンルームのような清浄
環境でなくても良＜、磁気ディスク装置の設置場所でも
容易に行なうことができる。また、例え工場に持ち帰る
場合でも、カバー２とベース１の結合状態のままで交換
作業を実施できるため前述した記録情報のイニシャライ
ズ等の作業が不要であるので、交換時間、交換コスト等
が少なくて済むという利点がある。Because of this structure, when it becomes necessary to replace the gas adsorbent 106, the cover 2 of the magnetic disk drive
Replacement work can be performed while the base 1 remains connected to the base 1. That is, as shown in FIG.
The storage box 107 of No. 6 is installed externally on the cover 2, and even when the storage box 107 is removed, the high-performance filter 101 is still functioning for the breathing hole 100, so it is easy to replace the gas adsorbent 106. It does not need to be in a clean environment such as a completely clean room, and can be easily carried out at the location where the magnetic disk device is installed. Furthermore, even if the item is taken back to the factory, the replacement work can be carried out with the cover 2 and base 1 still connected, so there is no need to initialize the recorded information as described above, so the replacement time and cost are reduced. It has the advantage of being done.
第２図は本発明の別の実施例を示す要部の部分図である
。この例では、プレフィルタ１０２′の機能を兼ねた収
納箱１０９内にガス吸着剤１０６を収納し、その収納箱
１０９を閉じる蓋１１０に外気と通じる通気穴１１１を
形成したものであるなお、この通気穴１１１は、収納箱
１０９に外気と通じるように設けることもできる。FIG. 2 is a partial view of essential parts showing another embodiment of the present invention. In this example, a gas adsorbent 106 is stored in a storage box 109 that also functions as a pre-filter 102', and a ventilation hole 111 that communicates with the outside air is formed in a lid 110 that closes the storage box 109. The ventilation hole 111 can also be provided in the storage box 109 so as to communicate with the outside air.
この例でも、前記した第１図の場合と全く同様な機能が
発蓮され、ガス吸着剤１０６の交換は、収納’ｍ １０
９の蓋１１０を開放することによって容易に行なうこと
ができ、この交換時、呼吸穴１０を閉じる高性能フィル
タ１０１′が機能しているために塵埃が内部に混入する
ことはない。In this example as well, the same function as in the case of FIG.
This can be easily done by opening the lid 110 of the breather 9, and since the high performance filter 101' that closes the breathing hole 10 is functioning, no dust will get inside.
ガス吸着剤の収納構造は、他にも各種の変形を考え得る
が、ガス吸着剤の交換或いはガス吸着剤を内蔵する収納
箱の交換時に、密閉構造体に設け、 られた呼吸穴よ
り混入する塵埃を濾過し得るフィルタが機能し得る構造
であれば良く、また例えば第２図に示す構造がベース１
に配設されていても良いことは言うまでもない。Various other modifications can be considered to the storage structure of the gas adsorbent, but when replacing the gas adsorbent or the storage box containing the gas adsorbent, contamination may occur through the breathing hole provided in the sealed structure. Any structure is sufficient as long as it can function as a filter capable of filtering out dust, and for example, the structure shown in FIG.
Needless to say, it may be arranged in
以上説明したように、本発明によれば、磁気ディスク装
置にとって有害なガスを効率良く吸着するガス吸着剤を
、外気から密閉構造体に設けられ、 た呼吸穴及び呼
吸フィルタに通じる流路中に配設したため、外部環境の
変化に対応してガス吸着剤を交換する必要が生じた場合
でも、極めて容易且つ信頼性を損なわずに、その交換作
業を行なうことができるという利点がある。As explained above, according to the present invention, a gas adsorbent that efficiently adsorbs gases harmful to magnetic disk drives is provided in a sealed structure from the outside air, and is provided in a flow path leading to a breathing hole and a breathing filter. Because of this arrangement, even if it becomes necessary to replace the gas adsorbent in response to changes in the external environment, there is an advantage that the replacement work can be performed extremely easily and without impairing reliability.
Ｏ′ 第１図は本発明の一実施例の密閉形の磁気ディ
スク装置の断面図、第２図は他の実施例の磁気ディスク
装置の要部を示す部分断面図、第３図は従来の呼吸穴を
有する密閉形の磁気ディスク装置の断面図、第４図は従
来の活性炭フィルタを備えた密閉形の磁気ディスク装置
の断面図である。
１・・・ベース、２・・・カバー、３・・・スピンドル
ハブ４・・・磁気ディスク媒体、５・・・スピンドルシ
ャフト６・・・軸受、７・・・磁性流体シール機構、８
・・・スピンドルモータのロータ、９・・・スピンドル
モータのステータ、１０・・・磁気ヘッド位置決め機構
、１１・・・ヘッドアーム。
１００．１００′・・・呼吸穴、１０１．１０１′・・
・高性能フィルタ（呼吸フィルタ）・１０２．１０２・
・・プレフィルタ、１０３・・・活性炭の収納箱、１゜
・・・活性炭、１０５・・・フィルタ、１０６・・・ガ
ス吸着剤、１０７・・・ガス吸着剤の収納箱、１０８・
・・収納箱に形成した通気穴、１０９・・・プレフィル
タの機能を備えた収納箱、１１０・・・収納箱の蓋、１
１１・・・蓋に形成した通気穴。
代理人 弁理士 長 尾 常 明
第１図
１０１’ １００’ １０２’ ２第８図O' Fig. 1 is a sectional view of a sealed magnetic disk device according to one embodiment of the present invention, Fig. 2 is a partial sectional view showing the main parts of a magnetic disk device of another embodiment, and Fig. 3 is a conventional one. FIG. 4 is a sectional view of a sealed magnetic disk device with a conventional activated carbon filter. DESCRIPTION OF SYMBOLS 1...Base, 2...Cover, 3...Spindle hub 4...Magnetic disk medium, 5...Spindle shaft 6...Bearing, 7...Magnetic fluid seal mechanism, 8
... Rotor of spindle motor, 9... Stator of spindle motor, 10... Magnetic head positioning mechanism, 11... Head arm. 100.100'...breathing hole, 101.101'...
・High performance filter (breathing filter)・102.102・
...Prefilter, 103...Activated carbon storage box, 1゜...Activated carbon, 105...Filter, 106...Gas adsorbent, 107...Gas adsorbent storage box, 108.
... Ventilation hole formed in the storage box, 109 ... Storage box with a pre-filter function, 110 ... Lid of the storage box, 1
11...Vent hole formed in the lid. Agent Patent Attorney Tsuneaki Nagao Figure 1 101'100'102' 2 Figure 8
Claims (1)
報を記録・再生させる磁気ヘッドとを密閉構造体内に収
容し、該密閉構造体内部の気圧を外気とほぼ等しく調整
するための呼吸穴と該呼吸穴より混入する塵埃を濾過す
る呼吸フィルタとを備えた密閉形の磁気ディスク装置に
おいて、 外気から上記呼吸穴及び上記呼吸フィルタに通じる流路
を設け、該流路中の上記外気側にガス吸着剤を収納した
ことを特徴とする磁気ディスク装置。(1) A magnetic disk medium for recording information and a magnetic head for recording and reproducing information on the medium are housed in a sealed structure, and a breathing hole is provided to adjust the air pressure inside the sealed structure to be approximately equal to the outside air. and a breathing filter for filtering dust that enters through the breathing hole, a flow path leading from outside air to the breathing hole and the breathing filter is provided, and a flow path is provided on the outside air side of the flow path. A magnetic disk device characterized by containing a gas adsorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2584686A JPS62184685A (en) | 1986-02-10 | 1986-02-10 | Magnetic disc device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2584686A JPS62184685A (en) | 1986-02-10 | 1986-02-10 | Magnetic disc device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62184685A true JPS62184685A (en) | 1987-08-13 |
Family
ID=12177205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2584686A Pending JPS62184685A (en) | 1986-02-10 | 1986-02-10 | Magnetic disc device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62184685A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5764435A (en) * | 1994-03-15 | 1998-06-09 | Fujitsu Limited | Breather filter unit for magnetic disk drive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5548877A (en) * | 1978-10-02 | 1980-04-08 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic memory unit |
| JPS6273484A (en) * | 1985-09-26 | 1987-04-04 | Nec Corp | Magnetic disc device |
-
1986
- 1986-02-10 JP JP2584686A patent/JPS62184685A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5548877A (en) * | 1978-10-02 | 1980-04-08 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic memory unit |
| JPS6273484A (en) * | 1985-09-26 | 1987-04-04 | Nec Corp | Magnetic disc device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5764435A (en) * | 1994-03-15 | 1998-06-09 | Fujitsu Limited | Breather filter unit for magnetic disk drive |
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