JPH05174523A - Rotary disk type storage device - Google Patents

Rotary disk type storage device

Info

Publication number
JPH05174523A
JPH05174523A JP34065691A JP34065691A JPH05174523A JP H05174523 A JPH05174523 A JP H05174523A JP 34065691 A JP34065691 A JP 34065691A JP 34065691 A JP34065691 A JP 34065691A JP H05174523 A JPH05174523 A JP H05174523A
Authority
JP
Japan
Prior art keywords
arm
disk
downstream
airflow
storage device
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
JP34065691A
Other languages
Japanese (ja)
Inventor
Takeshi Shibuya
竹志 渋谷
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP34065691A priority Critical patent/JPH05174523A/en
Publication of JPH05174523A publication Critical patent/JPH05174523A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To eliminate inflow of an external airflow into a disk pack housing through the downstream part of an arm by a method wherein a rear flow being larger on the inner circumference side of a disk than on the outer circumference side thereof is generated on the downstream side of the arm and a dynamic pressure of many airflows is turned into a static pressure on the downstream side of the arm on the inner circumference side. CONSTITUTION:A disk pack housing 4 is formed of an outer wall 3 of a case body and a partition wall 2 inside an apparatus which surround a disk 1, and a through hole 6 for an arm 5 having a flow checking plate 7 and an opening 9 having a filter 8 are provided in the wall 2. Herein a tapering part 12 making an arm width narrower toward the outer circumference of the disk 1 is provided in the downstream part of the arm 5 in respect to the direction A of rotation of the disk. According to this constitution, an airflow generated by the rotation of the disk 1 is checked by the flow checking plate 7 and made to flow onto the actuator 10 side through the through hole 6. Accordingly, the airflow running out onto the actuator 10 side returns into the housing through the opening 9 for circulation after it is filtered by the filter 8, and thus the reliability of the apparatus is improved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、回転円板形記憶装置に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating disk storage device.

【0002】[0002]

【従来の技術】磁気ディスク装置など回転円板形記憶装
置では、エアベアリングによってディスク面からサブミ
クロンで浮上する浮動ヘッドスライダが用いられてい
る。このため、装置の十分な信頼性を得るためには、装
置内に高度な清浄環境が要求される。
2. Description of the Related Art In a rotating disk storage device such as a magnetic disk device, a floating head slider is used which is floated submicron above the disk surface by an air bearing. Therefore, in order to obtain sufficient reliability of the device, a highly clean environment inside the device is required.

【0003】一方で、リニアアクセス機構搭載の磁気デ
ィスク装置ではアクセス手段のガイド部やベアリングが
装置内に露出するため、駆動機構からの不測の発塵に備
える必要が生じる。
On the other hand, in the magnetic disk device equipped with the linear access mechanism, the guide portion and the bearing of the access means are exposed in the device, so that it is necessary to be prepared for unexpected dust from the drive mechanism.

【0004】このため、特開昭63−239666号やU.S.Pate
nt4,780,776 では、装置外壁と装置内隔離壁を用いてデ
ィスク部を被うディスクパックハウジングを形成するこ
とにより、駆動機構部からの不測の汚染に対し、ディス
ク部を保護する構造をとっている。
For this reason, JP-A-63-239666 and USPate
The nt4,780,776 has a structure that protects the disk unit against accidental contamination from the drive mechanism by forming a disk pack housing that covers the disk unit using the device outer wall and the device isolation wall. ..

【0005】これらの構造では、ディスクパックハウジ
ングに設けられたアーム貫通口を介して、駆動機構部か
らディスク部へ流入する気流の逆流を無くすることが信
頼性を向上させるキーポイントとなる。
In these structures, it is a key point to improve the reliability by eliminating the backflow of the air flow from the drive mechanism section to the disk section through the arm through hole provided in the disk pack housing.

【0006】このため、これらの発明ではアーム貫通口
下流端部に阻流手段を配することなどによりこの問題を
解決していた。
Therefore, in these inventions, this problem has been solved by disposing a blocking means at the downstream end of the arm through-hole.

【0007】[0007]

【発明が解決しようとする課題】これらの従来技術によ
り、アーム貫通口を介しての大きな逆流は解消する。し
かし、ヘッドの支持アームが、深くディスクパックハウ
ジング内へ挿入される場合、アーム下流部に生じる負圧
部は外部からこのハウジング内部へ気流を吸い込むスト
ローとして機能する。このため、ディスク部をより清浄
に維持するためにはこのアーム下流部からの気流の流入
を防止する必要がある。
With these conventional techniques, large backflow through the arm through hole is eliminated. However, when the support arm of the head is deeply inserted into the disc pack housing, the negative pressure portion generated in the downstream portion of the arm functions as a straw for sucking the airflow from the outside into the housing. Therefore, in order to keep the disk portion cleaner, it is necessary to prevent the inflow of airflow from the downstream portion of the arm.

【0008】本発明の目的は、このアーム下流部からの
ディスクパックハウジング内への気流の流入を解消し、
より高信頼の回転円板形記憶装置を実現することにあ
る。
An object of the present invention is to eliminate the inflow of airflow into the disk pack housing from the arm downstream portion,
It is to realize a more reliable rotating disk storage device.

【0009】[0009]

【課題を解決するための手段】上記目的は、アーム下流
端部の円板積層方向の厚みを円板外周側で薄く、円板内
周側で厚くなるように分布を持たせることで達成され
る。
The above object can be achieved by providing a distribution in which the thickness of the arm downstream end in the disc stacking direction is thin on the disc outer peripheral side and thick on the disc inner peripheral side. It

【0010】また、一様にアーム下流端の幅をディスク
積層方向に薄くすることにより後流の発生そのものを押
えることも有効な手段となる。
It is also an effective means to suppress the occurrence of wake by itself by uniformly thinning the width of the arm downstream end in the disc stacking direction.

【0011】[0011]

【作用】このような構成において、アーム下流部では、
ディスク外周側に比べてディスク内周側で大きな後流が
発達する。このため、ディスク内周側のアーム下流にお
いてより多くの気流の動圧が静圧に変換される。従っ
て、アーム下流の圧力分布は、相対的にディスク内周側
で高く、ディスク外周側で低くなりアーム直後の気流は
ディスク外周へ向かうものとなる。これによってアーム
下流部を通じてのディスクパックハウジング内部への外
界からの気流の流入が防止され装置の信頼性が向上す
る。
In such a structure, in the downstream part of the arm,
A large wake develops on the inner side of the disc as compared to the outer side of the disc. Therefore, more dynamic pressure of the airflow is converted into static pressure downstream of the arm on the inner peripheral side of the disk. Therefore, the pressure distribution on the downstream side of the arm is relatively high on the inner circumference side of the disk and low on the outer circumference side of the disk, and the airflow immediately after the arm is directed to the outer circumference of the disk. As a result, the airflow from the outside to the inside of the disc pack housing through the arm downstream portion is prevented, and the reliability of the device is improved.

【0012】[0012]

【実施例】図2は本発明の一実施例である磁気ディスク
装置の断面図である。本装置では、ディスク1を取り囲
む筺体外壁3と装置内隔離壁2によってディスクパック
ハウジング4を形成している。また、隔離壁2には阻流
板7を備えたアーム5の貫通口6とフィルタ8を備えた
開口9が設けられている。
FIG. 2 is a sectional view of a magnetic disk device according to an embodiment of the present invention. In this device, a disc pack housing 4 is formed by an outer wall 3 of a housing that surrounds the disc 1 and an isolation wall 2 inside the device. Further, the isolation wall 2 is provided with a through hole 6 of an arm 5 having a baffle plate 7 and an opening 9 having a filter 8.

【0013】また、図1のアーム周辺の詳細図に示した
ように、アーム5のディスク回転方向Aに関する下流部
11には、ディスク外周方向に向かってアーム幅が狭く
なるようなテーパー部12が設けられている。
Further, as shown in the detailed view of the arm periphery of FIG. 1, a taper portion 12 is formed in the downstream portion 11 of the arm 5 in the disc rotation direction A such that the arm width becomes narrower toward the disc outer peripheral direction. It is provided.

【0014】このような構成に於て、図2のAに示した
方向にディスクが回転すると、ディスクの回転によって
生じる気流は、阻流板7に阻流され貫通口6を介してア
クチュエータ10側へと流出する。アクチュエータ10
側へ流出した気流はフィルタ8によって濾過された後、
再び開口6からディスクパックハウジング内へと戻る循
環流を形成する。
In such a structure, when the disk rotates in the direction shown in FIG. 2A, the air flow generated by the rotation of the disk is blocked by the baffle plate 7 and the actuator 10 side through the through hole 6. Outflows to. Actuator 10
After the airflow flowing out to the side is filtered by the filter 8,
It again creates a circulating flow from the opening 6 back into the disc pack housing.

【0015】この際、先の貫通口6から、図3のような
ほぼ一様な矩形断面を持つアームが円板間に挿入された
場合、よどみ領域13がアーム下流端部の後流中に形成
される。
At this time, when an arm having a substantially uniform rectangular cross section as shown in FIG. 3 is inserted between the discs through the through hole 6, the stagnation region 13 is introduced into the wake of the downstream end of the arm. It is formed.

【0016】このよどみ領域13内では各円板半径位置
における周速の違いからディスク外周側で高く、ディス
ク内周側で低い圧力分布が生じる。このためアクチュエ
ータ10側の気流は矢印Bに示すように、よどみ領域1
3を通じてディスク内周側に輸送される。
In the stagnation region 13, a pressure distribution is high on the outer peripheral side of the disk and low on the inner peripheral side of the disk due to the difference in peripheral speed at each disk radial position. Therefore, the air flow on the actuator 10 side is stagnation area 1 as shown by arrow B.
It is transported to the inner circumference side of the disc through the No. 3 disc.

【0017】これに対し図4に示した本実施例のアーム
形状の場合、ディスク外周側でアームを横切る気流b
は、テーパー部12に導かれ大きな後流を形成すること
なくアーム下流側へと流れる。このため外周側アーム下
流部15では動圧が静圧に変換されることなく内周側ア
ーム下流部14よりも相対的に低い圧力分布を形成す
る。
On the other hand, in the case of the arm shape of this embodiment shown in FIG. 4, the air flow b across the arm on the outer peripheral side of the disk.
Is guided to the tapered portion 12 and flows to the arm downstream side without forming a large wake. Therefore, the dynamic pressure is not converted into the static pressure in the outer peripheral side arm downstream portion 15, and a pressure distribution relatively lower than that in the inner peripheral side arm downstream portion 14 is formed.

【0018】これにより、よどみ領域内の気流は図4の
矢印C方向へ流れることとなりアクチュエータ側からの
気流の輸送が防止される。
As a result, the air flow in the stagnation area flows in the direction of arrow C in FIG. 4, and the transportation of the air flow from the actuator side is prevented.

【0019】図5には、アーム下流部に一様にテーパー
12部を設けた例を示す。このような場合でも後流のよ
どみ領域13を図3の矩形断面の物に比べずっと小さく
できることからアクチュエータ側からの気流の流入を少
なくする効果は得られる。またこの場合にはアームの剛
性の低下を避けることができる。
FIG. 5 shows an example in which a taper 12 part is uniformly provided on the downstream side of the arm. Even in such a case, the stagnation region 13 of the wake can be made much smaller than that of the object having the rectangular cross section in FIG. 3, so that the effect of reducing the inflow of air flow from the actuator side can be obtained. Further, in this case, it is possible to avoid a decrease in the rigidity of the arm.

【0020】また本実施例の効果は、ディスク外周側ア
ーム下流の後流の発生を抑制することにより得られるた
め、製造コストをかけられる場合には、少なくともディ
スク外周側のアーム断面形状を図6や図7のような、よ
り流線型に近い形とすることも有効な手段となる。
Further, since the effect of this embodiment is obtained by suppressing the generation of the wake downstream of the arm on the outer peripheral side of the disk, if the manufacturing cost can be increased, at least the sectional shape of the arm on the outer peripheral side of the disk is shown in FIG. A more streamlined shape as shown in FIG. 7 and FIG. 7 is also an effective means.

【0021】[0021]

【発明の効果】本発明により、ディスクパックハウジン
グによりディスクをアクチュエータから隔離する構造の
回転円板形記憶装置において、アーム下流部からのディ
スクパックハウジング内への気流の流入を解消し、より
高信頼の回転円板形記憶装置を実現することが可能とな
る。
As described above, according to the present invention, in the rotary disk type storage device having a structure in which the disk is separated from the actuator by the disk pack housing, the inflow of airflow from the arm downstream portion into the disk pack housing is eliminated, and higher reliability is achieved. It is possible to realize the rotating disk type storage device.

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

【図1】アーム周辺の斜視図。FIG. 1 is a perspective view around an arm.

【図2】磁気ディスク装置の断面図。FIG. 2 is a sectional view of a magnetic disk device.

【図3】従来アーム下流の流れの説明図。FIG. 3 is an explanatory diagram of a flow downstream of a conventional arm.

【図4】実施例のアーム周辺の流れの説明図。FIG. 4 is an explanatory diagram of a flow around the arm according to the embodiment.

【図5】その他の実施例の説明図。FIG. 5 is an explanatory diagram of another embodiment.

【図6】その他の実施例のアームの断面図。FIG. 6 is a sectional view of an arm of another embodiment.

【図7】その他の実施例のアームの断面図。FIG. 7 is a sectional view of an arm of another embodiment.

【符号の説明】[Explanation of symbols]

1…ディスク、2…隔離壁、5…アーム、6…貫通口、
7…阻流板、12…テーパー部。
1 ... Disc, 2 ... Separation wall, 5 ... Arm, 6 ... Through hole,
7 ... baffle plate, 12 ... taper part.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】記録ヘッド支持アームの貫通口を有するデ
ィスクパックハウジングを備えた回転円板形記憶装置に
おいて、 前記アームの円板回転方向に関する下流端部の厚みが、
円板外周側で薄く円板内周側で厚くなっていることを特
徴とする回転円板形記憶装置。
1. A rotating disk storage device comprising a disk pack housing having a through hole for a recording head support arm, wherein a thickness of a downstream end portion of the arm in a disk rotating direction is:
A rotating disk storage device, which is thin on the outer peripheral side of the disk and thicker on the inner peripheral side of the disk.
JP34065691A 1991-12-24 1991-12-24 Rotary disk type storage device Pending JPH05174523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34065691A JPH05174523A (en) 1991-12-24 1991-12-24 Rotary disk type storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34065691A JPH05174523A (en) 1991-12-24 1991-12-24 Rotary disk type storage device

Publications (1)

Publication Number Publication Date
JPH05174523A true JPH05174523A (en) 1993-07-13

Family

ID=18339062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34065691A Pending JPH05174523A (en) 1991-12-24 1991-12-24 Rotary disk type storage device

Country Status (1)

Country Link
JP (1) JPH05174523A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6091570A (en) * 1998-08-18 2000-07-18 International Business Machines Corporation Architecture for guiding the air flow in a disk storage device
KR20030009143A (en) * 2001-07-19 2003-01-29 삼성전자 주식회사 Actuator arm and assembly thereof, and hard disk drive adopting the same
US6614626B2 (en) * 2000-12-29 2003-09-02 Seagate Technology Llc Saw tooth actuator for a disc drive

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6091570A (en) * 1998-08-18 2000-07-18 International Business Machines Corporation Architecture for guiding the air flow in a disk storage device
US6614626B2 (en) * 2000-12-29 2003-09-02 Seagate Technology Llc Saw tooth actuator for a disc drive
KR20030009143A (en) * 2001-07-19 2003-01-29 삼성전자 주식회사 Actuator arm and assembly thereof, and hard disk drive adopting the same

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