JPH0445398U - - Google Patents
Info
- Publication number
- JPH0445398U JPH0445398U JP8466090U JP8466090U JPH0445398U JP H0445398 U JPH0445398 U JP H0445398U JP 8466090 U JP8466090 U JP 8466090U JP 8466090 U JP8466090 U JP 8466090U JP H0445398 U JPH0445398 U JP H0445398U
- Authority
- JP
- Japan
- Prior art keywords
- ball bearing
- magnetic
- rotating shaft
- fluid seal
- spindle hub
- 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
- 239000011553 magnetic fluid Substances 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000011045 prefiltration Methods 0.000 claims description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims 1
- 239000000428 dust Substances 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
Description
第１図ａおよびｂは本考案の一実施例を示す断
面図およびＡ部拡大断面図、第２図は従来の磁気
デイスク装置の一例を示す断面図である。
１，２１……回転軸、２，１２……フレーム、
３，４，１３，１４……ベアリング、５，１５…
…スピンドルハブ、６，１６……磁性流体シール
、７……プレフイルタ、９……磁気デイスク、１
０……スペーサリング、１１……クランプリング
。
1A and 1B are a sectional view and an enlarged sectional view of part A showing an embodiment of the present invention, and FIG. 2 is a sectional view showing an example of a conventional magnetic disk device. 1, 21...Rotation axis, 2, 12...Frame,
3, 4, 13, 14...Bearing, 5, 15...
...Spindle hub, 6, 16...Magnetic fluid seal, 7...Prefilter, 9...Magnetic disk, 1
0...Spacer ring, 11...Clamp ring.
Claims (1)
れたスピンドルハブと、前記回転軸を支持するボ
ールベアリングと、前記ボールベアリングを保持
するフレームと、スペーサリングを介して前記ス
ピンドルハブに搭載された複数枚の磁気デイスク
と、前記磁気デイスクおよび前記スペーサリング
を固定するクランプリングとを密封容器内に収容
し、前記密封容器の内部に外気が侵入するのを阻
止するために磁性流体シールを設けた磁気デイス
ク装置において、前記回転軸に前記ボールベアリ
ングと前記磁性流体シールとの間に外気が流通す
るのを可能とする空気逃げ穴を設け、前記空気逃
げ穴に塵埃除去用のプレフイルタを介装させたこ
とを特徴とする磁気デイスク装置。 ２ 回転運動をする回転軸と、前記回転軸に固定
されたスピンドルハブと、前記回転軸を支持する
ボールベアリングと、前記ボールベアリングを保
持するフレームと、スペーサリングを介して前記
スピンドルハブに搭載された複数枚の磁気デイス
クと、前記磁気デイスクおよび前記スペーサリン
グを固定するクランプリングとを密封容器内に収
容し、前記密封容器の内部に外気が侵入するのを
阻止するために磁性流体シールを設けた磁気デイ
スク装置において、前記回転軸に前記ボールベア
リングと前記磁性流体シールとの間に外気が流通
するのを可能とする空気逃げ穴を設け、前記空気
逃げ穴に連続的な微細穴を有するウレタンスポン
ジ製のシリコン処理を施したプレフイルタを介装
させたことを特徴とする磁気デイスク装置。[Claims for Utility Model Registration] 1. A rotary shaft that rotates, a spindle hub fixed to the rotary shaft, a ball bearing that supports the rotary shaft, a frame that holds the ball bearing, and a spacer ring. A plurality of magnetic disks mounted on the spindle hub and a clamp ring for fixing the magnetic disks and the spacer ring are housed in a sealed container, and outside air is prevented from entering into the sealed container. In a magnetic disk device equipped with a magnetic fluid seal for the purpose of the present invention, an air escape hole is provided in the rotating shaft to allow outside air to flow between the ball bearing and the magnetic fluid seal, and the air escape hole is provided with a magnetic fluid seal to prevent dust from entering the rotating shaft. A magnetic disk device characterized by interposing a prefilter for removal. 2. A rotating shaft that rotates, a spindle hub fixed to the rotating shaft, a ball bearing that supports the rotating shaft, a frame that holds the ball bearing, and a spindle hub that is mounted on the spindle hub via a spacer ring. A plurality of magnetic disks and a clamp ring for fixing the magnetic disks and the spacer ring are housed in a sealed container, and a magnetic fluid seal is provided to prevent outside air from entering the sealed container. In the magnetic disk device, the rotary shaft is provided with an air escape hole that allows outside air to flow between the ball bearing and the magnetic fluid seal, and the air escape hole has a continuous fine hole made of urethane. A magnetic disk device characterized by interposing a silicone-treated sponge pre-filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8466090U JPH0445398U (en) | 1990-08-10 | 1990-08-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8466090U JPH0445398U (en) | 1990-08-10 | 1990-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0445398U true JPH0445398U (en) | 1992-04-17 |
Family
ID=31815798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8466090U Pending JPH0445398U (en) | 1990-08-10 | 1990-08-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0445398U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6258478A (en) * | 1985-09-09 | 1987-03-14 | Fujitsu Ltd | Magnetic disk device |
-
1990
- 1990-08-10 JP JP8466090U patent/JPH0445398U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6258478A (en) * | 1985-09-09 | 1987-03-14 | Fujitsu Ltd | Magnetic disk device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0445398U (en) | ||
| JPS5826774U (en) | Magnetic disk rotation drive device | |
| JPH02116054U (en) | ||
| JPS6329276U (en) | ||
| JP2580393Y2 (en) | Spindle motor | |
| JPS587260U (en) | Magnetic disk rotation drive device | |
| JPS60116604U (en) | disk cleaner | |
| JPH0434871U (en) | ||
| JPH0439861U (en) | ||
| JPS62101160U (en) | ||
| JPH03124395U (en) | ||
| JPH0284170U (en) | ||
| JPH02148411U (en) | ||
| JPH01174797U (en) | ||
| JPH01116576U (en) | ||
| JPH0445386U (en) | ||
| JPS591184U (en) | magnetic disk device | |
| JPH0352895U (en) | ||
| JPH01150479U (en) | ||
| JPH0161850U (en) | ||
| JPH0472333U (en) | ||
| JPS59100502U (en) | Rotary drive mechanism | |
| JPS6152354U (en) | ||
| JPH0250897U (en) | ||
| JPH037105U (en) |