JPS6192492A - Sealed type magnetic disk device - Google Patents

Sealed type magnetic disk device

Info

Publication number
JPS6192492A
JPS6192492A JP21313484A JP21313484A JPS6192492A JP S6192492 A JPS6192492 A JP S6192492A JP 21313484 A JP21313484 A JP 21313484A JP 21313484 A JP21313484 A JP 21313484A JP S6192492 A JPS6192492 A JP S6192492A
Authority
JP
Japan
Prior art keywords
filter
sealed container
desiccant
breathing
drying agent
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
JP21313484A
Other languages
Japanese (ja)
Inventor
Kunio Hirose
廣瀬 邦夫
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP21313484A priority Critical patent/JPS6192492A/en
Publication of JPS6192492A publication Critical patent/JPS6192492A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To keep moisture in a sealed container equal and a low temperature thereof by providing a filter incorporating a drying agent in flowing passages for air intruding an inner section through breathing openings formed in the sealed container. CONSTITUTION:An external air, after dusts are removed by a filter 14, passes through a breathing throttle 13, enters a filter 18 containing a drying agent, and at this time by an effect of the breathing throttle 13. the quantity of steam conducted to the filter 18 containing the drying agent per unit time is limited. Then, this steam is absorbed by a drying agent 17 in the drying agent containing filter 18 and through a breathing opening 10, intrudes into a sealed container 1. Thereby, the air has an extremely low moisture, is evenly diffused and the drying agent 17 can be prevented from flowing into the sealed container 1.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 関するものである。[Detailed description of the invention] [Industrial application field] It is related to

〔従来の技術〕[Conventional technology]

通常、磁気ディスク表面にゴミやホコリが付着すると表
面に傷が付いたりして、情報を正確に記憶、読出しでき
ないおそれが生じる。そこで、米国特許第4,307,
435号に開示するように磁気ディスク全体を密封容器
で包囲したディスク装置が提案されている。第2図はこ
の種の装置の一例を示すもので、同図において、■はヘ
ース1a及びカバー1bより構成される密封容器、2は
ヘース1aに取付けられたスピンドル、3はスピンドル
2に取付けられた密封容器1に収納される磁気ディスク
、4はヘース1aの下部に設けられるスピンドルモータ
、5はヘース1aの端部下側に取付けられた容器5aに
収納される乾燥剤、6は乾燥剤5と密封容器1の内部と
の間に位置するフィルタ、7はフィルタ6と密封容器1
の内部との間に位置する小孔から成る絞り、8は密封容
器1の内部と外部との間の空気流路部に位置するプレス
フィルタ、9はプレスフィルタ8と密封容器1の内部と
の間に位置する小孔より成る呼吸用絞りである。
Normally, if dirt or dust adheres to the surface of a magnetic disk, the surface may be scratched and information may not be stored or read out accurately. Therefore, U.S. Patent No. 4,307,
As disclosed in Japanese Patent No. 435, a disk device in which the entire magnetic disk is enclosed in a sealed container has been proposed. Fig. 2 shows an example of this type of device. 4 is a spindle motor provided at the bottom of the sheath 1a, 5 is a desiccant stored in a container 5a attached to the bottom of the end of the sheath 1a, and 6 is a desiccant 5. A filter 7 is located between the inside of the sealed container 1 and the filter 6 and the sealed container 1.
8 is a press filter located in the air flow path between the inside and outside of the sealed container 1; 9 is a narrow hole between the press filter 8 and the inside of the sealed container 1; A breathing diaphragm consisting of small holes located between the two.

次に動作について説明する。外気はプレスフィルタ8に
よりダストを除去された後に呼吸用絞り9を通って密封
容器1の内部に侵入するが、この際、呼吸用絞り9の効
果により単位時間当りに密封容器1内に拡散する水蒸気
量は制約を受ける。
Next, the operation will be explained. After dust is removed by the press filter 8, the outside air enters the sealed container 1 through the breathing diaphragm 9, but at this time, the air is diffused into the sealed container 1 per unit time due to the effect of the breathing diaphragm 9. The amount of water vapor is subject to restrictions.

また、密封容器1の内部に拡散した水蒸気は乾燥剤5に
より吸水され、その結果、密封容器lの内部湿度は、水
蒸気の拡散侵入量と乾燥剤5の吸水量の均衡する点で一
定に保たれる。
Further, the water vapor that has diffused inside the sealed container 1 is absorbed by the desiccant 5, and as a result, the internal humidity of the sealed container 1 is kept constant at the point where the amount of water vapor that diffuses and enters is balanced with the amount of water absorbed by the desiccant 5. drooping

しかしながら、上記従来の磁気ディスク装置は外気吸入
場所より離れた位置に乾燥剤5が設けられているので、
装置の非動作詩密封容器lの内部が無風状態にある場合
には、どうしても外気の侵入してくる場所と、乾燥剤5
により吸水を行う場かつ低い湿度に保つことが困難であ
った。
However, in the conventional magnetic disk drive described above, the desiccant 5 is provided at a location away from the outside air intake location.
If the inside of the sealed container is in a windless state, there are areas where outside air will inevitably enter and desiccant 5.
Therefore, it was difficult to maintain a low humidity level in a place where water could be absorbed.

そこで、本発明の出願人等は上記従来の問題点を解消す
るために、特許出願番号59−003834において、
外気の流路に乾燥剤を設置し、一度乾燥剤を通過した空
気を密封容器内に導くようにして密封容器内を均一にか
つ低湿度に保つ〕とができる密封形磁気ディスク装置を
提案している。
Therefore, in order to solve the above-mentioned conventional problems, the applicants of the present invention, in patent application number 59-003834,
We proposed a sealed magnetic disk device that can maintain a uniform and low humidity inside the sealed container by installing a desiccant in the outside air flow path and guiding the air that has passed through the desiccant into the sealed container. ing.

以下、上記先行技術による一実施例を図について説明す
る。第3図において、へ〜スlaの端部に呼吸孔10が
形成され、この孔10の外周縁に筒体11が螺着される
。筒体11の下端よりやや内側に仕切り壁12が形成さ
れ、この仕切り壁12に小孔を形成することにより呼吸
用絞り13が設けられる。呼吸用絞り13より外側にフ
ィルタ14が設けられ、内側に順次乾燥剤15及びプレ
スフィルタ16が設けられる。外気フィルタ14、呼吸
用絞り13.乾燥剤15.プレスフィルタ16.呼吸孔
10を介して密封容器1内に侵入することになる。
An embodiment according to the above-mentioned prior art will be described below with reference to the drawings. In FIG. 3, a breathing hole 10 is formed at the end of the opening 1a, and a cylindrical body 11 is screwed onto the outer peripheral edge of this hole 10. A partition wall 12 is formed slightly inside the lower end of the cylinder 11, and a breathing diaphragm 13 is provided by forming a small hole in the partition wall 12. A filter 14 is provided outside the breathing aperture 13, and a desiccant 15 and a press filter 16 are sequentially provided inside. Outside air filter 14, breathing diaphragm 13. Desiccant 15. Press filter 16. It will enter the sealed container 1 through the breathing hole 10.

次に動作について説明する。外気はフィルタ14により
ダストを除去された後、呼吸用絞りI3を通過して乾燥
剤15内に入るが、この際、呼吸用絞り13の効果によ
り、単位時間当たりに乾燥剤15内へ拡散する水蒸気の
量は制約を受ける。次いで、この水蒸気は乾燥剤15に
よって吸水され、最終的にプレスフィルタ16を通過し
て密封容器1内に侵入する。従って空気は水分が乾燥剤
15で除去されるので極めて低湿度となり、しかも孔1
0より密封容器1内に均一に拡散するので、密封容器1
内で湿度勾配が生じない。
Next, the operation will be explained. After dust is removed from the outside air by the filter 14, it passes through the breathing diaphragm I3 and enters the desiccant 15, but at this time, due to the effect of the breathing diaphragm 13, it diffuses into the desiccant 15 per unit time. The amount of water vapor is constrained. Next, this water vapor is absorbed by the desiccant 15 and finally passes through the press filter 16 and enters the sealed container 1. Therefore, moisture in the air is removed by the desiccant 15, resulting in extremely low humidity.
0 more uniformly in the sealed container 1, so the sealed container 1
There are no humidity gradients within the area.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら”、上記各従来例に示す密封形磁気ディス
ク装置にあっては、乾燥剤5あるいは15と密封容器1
の内部との間にフィルタ6あるいはプレスフィルタ16
を配置した構成としているため、フィルタ6と容器5a
との接合部あるいはプレスフィルタ16と筒体11との
接合部のわずかな隙間から乾燥剤5.15が密封容器1
の内部に流入して吸水効果が著しく悪化するとともに、
密封容器1内部のダストが増大するという問題点を有し
ていた。
However, in the sealed magnetic disk drive shown in each of the above conventional examples, the desiccant 5 or 15 and the sealed container 1
Filter 6 or press filter 16 between the inside of
Since the configuration is such that the filter 6 and the container 5a are
The desiccant 5.15 leaks into the sealed container 1 through a small gap between the press filter 16 and the cylindrical body 11.
The water absorption effect is significantly worsened by flowing into the inside of the
There was a problem in that the amount of dust inside the sealed container 1 increased.

本発明はかかる問題点を解決するためになされたもので
、乾燥剤が流入することなく、密封容器内の湿度を均一
にかつ低湿度に保つことができる密封形磁気ディスク装
置を得ることを目的とするものである。
The present invention was made to solve such problems, and an object of the present invention is to provide a sealed magnetic disk device that can maintain uniform and low humidity inside a sealed container without desiccant flowing in. That is.

〔問題点を解決するための手段〕[Means for solving problems]

本発明に係る密封形磁気ディスク装置は密封容器に形成
された呼吸孔を介して内部に侵入する空気の流路に乾燥
剤が一体化されたフィルタを配置したものである。
The sealed magnetic disk device according to the present invention has a filter integrated with a desiccant disposed in a flow path of air entering the inside through a breathing hole formed in a sealed container.

〔作用〕[Effect]

本発明においては、外気は、フィルタ通過時に乾燥剤に
より水蒸気が吸水され、呼吸孔を介して密封容器内に侵
入し拡散される。
In the present invention, when outside air passes through the filter, water vapor is absorbed by the desiccant, enters the sealed container through the breathing hole, and is diffused.

C実施例〕 第1図は本発明による密封形磁気ディスク装置の一実施
例を示す断面図であり、第3回と同一または相当部分に
は同一符号を用い、その説明は省略する。同図に示すよ
うに本実施例においては、密封容器】内に侵入する空気
の流路を形成する筒体11の呼吸用絞り13と呼吸孔1
0との間に乾燥剤17を内包しに包囲体としての乾燥剤
含有フィルタ18が配置されている。
Embodiment C] FIG. 1 is a cross-sectional view showing an embodiment of a sealed magnetic disk device according to the present invention, and the same reference numerals are used for the same or corresponding parts as in the third part, and the explanation thereof will be omitted. As shown in the figure, in this embodiment, a breathing diaphragm 13 and a breathing hole 1 of a cylindrical body 11 forming a flow path for air entering the sealed container are used.
A desiccant-containing filter 18 as an enclosure is disposed between the filter 1 and the desiccant 17.

次に動作について説明する。外気はフィルタ14により
ダストを除去された後、呼吸用絞り13を通過して乾燥
剤含有するフィルタ18に入るか、この際、呼吸用絞り
I3の効果により、単位時間当たりに乾燥剤含有フィル
タ18へ導かれる水蒸気の量は制約を受ける。次いで、
この水蒸気は乾燥剤き有フィルタ18内の乾燥剤17に
よって吸水される。従って、上記乾燥剤含有フィルタ1
8を通過し、呼吸孔10を介して密封容器1内に侵入す
る空気は極めて低湿度となり、均一に拡散される。また
、乾燥剤17は乾燥剤含有フィルタ18に内包されてい
るので、密封容器1内に流入することはない。
Next, the operation will be explained. After dust is removed from the outside air by the filter 14, it passes through the breathing diaphragm 13 and enters the desiccant-containing filter 18, or at this time, due to the effect of the breathing diaphragm I3, the desiccant-containing filter 18 The amount of water vapor that can be introduced into the Then,
This water vapor is absorbed by the desiccant 17 in the filter 18 with desiccant. Therefore, the desiccant-containing filter 1
8 and enters the sealed container 1 through the breathing hole 10, the air has extremely low humidity and is uniformly diffused. Further, since the desiccant 17 is contained in the desiccant-containing filter 18, it does not flow into the sealed container 1.

なお、上記実施例では空気の流路に一つの絞りしか設け
ていないが、これを複数設けることにより、乾燥剤含有
フィルタ18の寿命を延ばすこともできる。
In the above embodiment, only one throttle is provided in the air flow path, but by providing a plurality of throttles, the life of the desiccant-containing filter 18 can be extended.

また、上記実施例では乾燥剤17を内包した乾燥剤含有
フィルタ18を用いたものについて説明したが、吸水効
果とフィルタ効果を有する一体化したものであればよく
、上記実施例と同様な効果を奏する。
Further, in the above embodiment, a desiccant-containing filter 18 containing a desiccant 17 is used, but any integrated filter having a water absorption effect and a filtering effect may be used, and it can achieve the same effect as the above embodiment. play.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明によれば、密封容器に形成さ
れた呼吸孔を介して内部に侵入する空気の流路に乾燥剤
が一体化されたフィルタを配置したことにより、乾燥削
り流入を阻止しつつ密封容器内の湿度を均一に、かつ極
めて低湿度に保つことができる密封形磁気ディスク装置
が得られるという効果がある。
As explained above, according to the present invention, a filter integrated with a desiccant agent is disposed in the flow path of air entering the interior through the breathing hole formed in the sealed container, thereby preventing the inflow of dry shavings. At the same time, it is possible to obtain a sealed magnetic disk device that can keep the humidity inside the sealed container uniform and extremely low.

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

第1図は本発明による密封形磁気ディスク装置の一実施
例を示す断面図、第2図および第3図はそれぞれ3封形
磁気ディスク装置の従来例を示す断面図である。 1・・・密封容器、3・・・磁気ディスク、10・・・
呼吸孔、17・・・乾燥剤、18・・・フィルタ(包囲
体)。 なお、図中同一または相当部分には同一符号を用いてい
る。 代理人   大 岩 増 a (ほか2名)第1図 1:弘i?を誓a 3:な1トチ°λ人り 10:クリf<L 17:タ乞′pk責11 18二りし寸劇官屓フ4ルク 第2図 第3図
FIG. 1 is a sectional view showing an embodiment of a sealed magnetic disk device according to the present invention, and FIGS. 2 and 3 are sectional views each showing a conventional three-sealed magnetic disk device. 1... sealed container, 3... magnetic disk, 10...
Breathing hole, 17... Desiccant, 18... Filter (envelope). Note that the same reference numerals are used for the same or corresponding parts in the figures. Agent Masu Oiwa A (and 2 others) Figure 1 1: Hiroi? 3: Na 1 Tochi ° λ person 10: Crit f < L 17: Tabeg'pk blame 11 18 Two skit officials 4 Luk Figure 2 Figure 3

Claims (2)

【特許請求の範囲】[Claims] (1)磁気ディスクを包囲する密封容器を備えた密封形
磁気ディスク装置において、上記密封容器に形成された
呼吸孔を介して内部に侵入する空気の流路に乾燥剤が一
体化されたフィルタを配置したことを特徴とする密封形
磁気ディスク装置。
(1) In a sealed magnetic disk device equipped with a sealed container that surrounds a magnetic disk, a filter with an integrated desiccant is installed in the flow path of air that enters the interior through a breathing hole formed in the sealed container. A sealed magnetic disk device characterized in that:
(2)フィルタを、乾燥剤を内包する包囲体より形成し
たことを特徴とする特許請求の範囲第1項記載の密封形
磁気ディスク装置。
(2) The sealed magnetic disk device according to claim 1, wherein the filter is formed of an envelope containing a desiccant.
JP21313484A 1984-10-11 1984-10-11 Sealed type magnetic disk device Pending JPS6192492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21313484A JPS6192492A (en) 1984-10-11 1984-10-11 Sealed type magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21313484A JPS6192492A (en) 1984-10-11 1984-10-11 Sealed type magnetic disk device

Publications (1)

Publication Number Publication Date
JPS6192492A true JPS6192492A (en) 1986-05-10

Family

ID=16634137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21313484A Pending JPS6192492A (en) 1984-10-11 1984-10-11 Sealed type magnetic disk device

Country Status (1)

Country Link
JP (1) JPS6192492A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0192988A (en) * 1987-10-05 1989-04-12 Hitachi Ltd Disk device
US5075807A (en) * 1989-03-15 1991-12-24 Hitachi, Ltd. Magnetic disk device including humidity controller in disk enclosure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0192988A (en) * 1987-10-05 1989-04-12 Hitachi Ltd Disk device
US5075807A (en) * 1989-03-15 1991-12-24 Hitachi, Ltd. Magnetic disk device including humidity controller in disk enclosure

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