JPH02185785A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPH02185785A
JPH02185785A JP615589A JP615589A JPH02185785A JP H02185785 A JPH02185785 A JP H02185785A JP 615589 A JP615589 A JP 615589A JP 615589 A JP615589 A JP 615589A JP H02185785 A JPH02185785 A JP H02185785A
Authority
JP
Japan
Prior art keywords
disk
air
spindle
structure body
closed structure
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
JP615589A
Other languages
Japanese (ja)
Inventor
Kazuo Isono
磯野　和夫
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP615589A priority Critical patent/JPH02185785A/en
Publication of JPH02185785A publication Critical patent/JPH02185785A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To effectively allow clean air from which minute dust is eliminated to flow into a disk closed structure body by providing an electrostatic filter on an air passage of a spindle. CONSTITUTION:When a disk plate 2 is rotated by a spindle 1, and a head driving part 4 for carrying a magnetic head 3 is operated, air pressure of the inside of a disk closed structure body sealed up tightly by a dust-proof cover 7 rises. When the disk plate 2 and the head driving part 4 stop, air pressure in the disk closed structure body drops. By a variation of this air pressure, inside/ outside air flows through a respiration filter 6. Air which flows into the inside of the disk closed structure body passes through an electrostatic filter 5 provided on an air passage of the spindle 1 and flows toward the disk plate 2. The electrostatic filter 5 can eliminate dust of about 0.01mum, therefore, the inside of the disk closed structure body can be held in a clean state.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は磁気ディスク装置に関し、特にディスク板と磁
気ヘッドとを外部から密封したディスク密閉構造体を備
える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 magnetic disk drive, and more particularly to a magnetic disk drive including a disk sealing structure that seals a disk plate and a magnetic head from the outside.

〔従来の技術〕[Conventional technology]

ディスク板と磁気ヘッドとを塵埃による汚染から保護す
るため、従来の磁気ディスク装置は、ディスク板と磁気
ヘッドとヘッド駆動部とスピンドルとを防塵カバーによ
って密封して外部と隔離しており、スピンドルによって
ディスク板を回転し、呼吸用フィルタによって内外の圧
力差の調整を行っている。In order to protect the disk plate and magnetic head from contamination by dust, conventional magnetic disk drives seal the disk plate, magnetic head, head drive unit, and spindle with a dustproof cover to isolate them from the outside. The disc plate is rotated and the pressure difference between the inside and outside is adjusted using a breathing filter.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

特に最近の磁気ディスク装置では、高記録密度化が進み
、このため磁気ヘッドの浮上量はますます小さくなって
きている。従って微小な塵埃によって磁気ヘッドが損傷
する事故が多発している。従ってディスク密閉構造体内
のディスク板と磁気ヘッドとの間に微小な塵埃が流入す
るのを防止するため、エアフィルタを使用しているが、
従来のエアフィルタは、主として紙フィルタが使用され
ているため、その性能は約０．３μｍ以上の塵埃を除去
できるのが限度である。しかし最近は、さらに微小な（
例えば０．１μｍ以下）の塵埃を除去することが必要に
なってきている。このため、上述のような従来のエアフ
ィルタでは、微小な塵埃を完全に除去することができな
いという欠点がある。Particularly in recent magnetic disk drives, recording densities have been increasing, and as a result, the flying height of the magnetic head is becoming smaller and smaller. Therefore, there are many accidents in which magnetic heads are damaged by minute dust particles. Therefore, an air filter is used to prevent minute dust from entering between the disk plate and the magnetic head inside the disk sealing structure.
Since conventional air filters mainly use paper filters, their performance is limited to the ability to remove dust particles of approximately 0.3 μm or larger. However, recently, even smaller (
It has become necessary to remove dust particles (for example, 0.1 μm or less). For this reason, the conventional air filter as described above has a drawback in that it cannot completely remove minute dust.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の磁気ディスク装置は、ディスク密閉構造体内の
ディスク板および磁気ヘッドに流入する空気に含まれる
微小な塵埃を除去するため、静電フィルタを設けたもの
である。The magnetic disk drive of the present invention is provided with an electrostatic filter in order to remove minute dust contained in the air flowing into the disk plate and magnetic head within the disk sealing structure.

すなわち、本発明の磁気ディスク装置は、ディスク板と
前記ディスク板に対して情報の記録再生を行う磁気ヘッ
ドと前記磁気ヘッドを坦持してその位置決め動作を行う
ヘッド駆動部と前記ディスク板を搭載して回転するスピ
ンドルとを外部から密閉して隔離するための防塵カバー
を有するディスク密閉構造体を備える磁気ディスク装置
において、前記スピンドルの空気流路に静電フィルタを
配設したものである。That is, the magnetic disk device of the present invention is equipped with a disk plate, a magnetic head that records and reproduces information on the disk plate, a head drive unit that supports the magnetic head and performs a positioning operation, and the disk plate. In this magnetic disk drive, an electrostatic filter is disposed in an air flow path of the spindle in a magnetic disk drive including a disk sealing structure having a dustproof cover for sealing and isolating a rotating spindle from the outside.

〔実施例〕〔Example〕

次に本発明の実施例について図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.

第１図は本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing one embodiment of the present invention.

第１図の実施例は、スピンドル１とディスク板２と磁気
ヘッド３とヘッド駆動部４と防塵カバー７と静電フィル
タ５とを備えて構成されている。The embodiment shown in FIG. 1 includes a spindle 1, a disk plate 2, a magnetic head 3, a head drive section 4, a dustproof cover 7, and an electrostatic filter 5.

すなわち、スピンドル１によってディスク板２が回転し
、磁気ヘッド３を坦持しているヘッド駆動部４が動作す
ると、防塵カバー７によって密封されているディスク密
閉構造体の内部の空気圧が上昇する。ディスク板２とヘ
ッド駆動部４とが停止すると、ディスク密閉構造体内の
空気圧が下降する。この空気圧の変化によって、内外の
空気は呼吸用フィルタ６を通って流通する。ディスク密
封楕遺体の内部に流入した空気は、スピンドル１の空気
流路に配設されている静電フィルタ５を経由しディスク
板２の方に流れる。静電フィルタ６は、０．０１μｍ程
度の塵埃を除去できるため、従来の紙フィルタでは実現
できなかった清浄な状態にディスク密閉構造体の内部を
保つことが可能となる。That is, when the disk plate 2 is rotated by the spindle 1 and the head drive section 4 supporting the magnetic head 3 is operated, the air pressure inside the disk sealing structure sealed by the dustproof cover 7 increases. When the disk plate 2 and head drive unit 4 stop, the air pressure inside the disk sealing structure decreases. Due to this change in air pressure, internal and external air flows through the breathing filter 6. The air that has entered the interior of the disc-sealed ellipse flows toward the disc plate 2 via an electrostatic filter 5 arranged in the air flow path of the spindle 1. Since the electrostatic filter 6 can remove dust of about 0.01 μm, it is possible to maintain the inside of the disk sealing structure in a clean state that could not be achieved with conventional paper filters.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明の磁気ディスク装置は、ス
ピンドルの空気流路に静電フィルタを付加することによ
り、微小な塵埃を除去した清浄な空気を効果的にディス
ク密閉構造体内に流入することができるという効果があ
り、したがって磁気ディスク装置の信頼性を向上させる
ことができるという効果がある。As explained above, in the magnetic disk drive of the present invention, by adding an electrostatic filter to the air flow path of the spindle, clean air from which minute dust has been removed can effectively flow into the disk sealed structure. This has the effect that the reliability of the magnetic disk device can be improved.

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

第１図は本発明の一実施例を示す断面図である。 １・・・スピンドル、２・・・ディスク板、３・・・磁
気ヘッド、４・・・ヘッド駆動部、５・・・静電フィル
タ、６・・・呼吸用フィルタ、７・・・防塵カバー遍　
　１　四FIG. 1 is a sectional view showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Spindle, 2... Disk plate, 3... Magnetic head, 4... Head drive part, 5... Electrostatic filter, 6... Breathing filter, 7... Dust-proof cover Itinerary
1 four

Claims (1)

【特許請求の範囲】[Claims] ディスク板と前記ディスク板に対して情報の記録再生を
行う磁気ヘッドと前記磁気ヘッドを坦持してその位置決
め動作を行うヘッド駆動部と前記ディスク板を搭載して
回転するスピンドルとを外部から密閉して隔離するため
の防塵カバーを有するディスク密閉構造体を備える磁気
ディスク装置において、前記スピンドルの空気流路に静
電フィルタを配設したことを特徴とする磁気ディスク装
置。A disk plate, a magnetic head that records and reproduces information on the disk plate, a head drive unit that supports the magnetic head and performs a positioning operation, and a spindle that carries the disk plate and rotates are sealed from the outside. What is claimed is: 1. A magnetic disk device comprising a disk sealing structure having a dust-proof cover for isolating and isolating the disks, characterized in that an electrostatic filter is disposed in the air flow path of the spindle.
JP615589A 1989-01-12 1989-01-12 Magnetic disk device Pending JPH02185785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP615589A JPH02185785A (en) 1989-01-12 1989-01-12 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP615589A JPH02185785A (en) 1989-01-12 1989-01-12 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPH02185785A true JPH02185785A (en) 1990-07-20

Family

ID=11630639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP615589A Pending JPH02185785A (en) 1989-01-12 1989-01-12 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPH02185785A (en)

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