JPS6255299U - - Google Patents
Info
- Publication number
- JPS6255299U JPS6255299U JP12568385U JP12568385U JPS6255299U JP S6255299 U JPS6255299 U JP S6255299U JP 12568385 U JP12568385 U JP 12568385U JP 12568385 U JP12568385 U JP 12568385U JP S6255299 U JPS6255299 U JP S6255299U
- Authority
- JP
- Japan
- Prior art keywords
- base
- magnetic disk
- air circulation
- disk device
- 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.)
- Granted
Links
- 230000002265 prevention Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Rotational Drive Of Disk (AREA)
Description
第１図は本考案に係る磁気デイスク装置の半断
面図、第２図は本考案の別の実施例の部分構成図
である。
１…磁気デイスク、２…ハブ、３…回転軸、４
…ベース、６…ベアリング、７…プーリ、９…カ
バー、１２…ハブ下縁部、１４，２４…エア循環
孔、１５…フイルタ、１６…エアダクト、１８，
１９，２３…ラビリンス、２０…環状壁。
FIG. 1 is a half-sectional view of a magnetic disk device according to the present invention, and FIG. 2 is a partial configuration diagram of another embodiment of the present invention. 1... Magnetic disk, 2... Hub, 3... Rotating shaft, 4
...Base, 6...Bearing, 7...Pulley, 9...Cover, 12...Hub lower edge, 14, 24...Air circulation hole, 15...Filter, 16...Air duct, 18,
19, 23... Labyrinth, 20... Annular wall.
Claims (1)
装着し、該ベース下面側の回転軸上に回転軸駆動
用プーリ固定し、ベース上面側の回転軸上に磁気
デイスク装着用ハブを固定し、ベース上面側をカ
バーで覆い内部に磁気デイスクを密封し、ベース
内周部および外周部にエア循環孔を形成し、ベー
ス下面側に両エア循環孔を連通させるエアダクト
を形成して内部エア循環系路を構成し、該内部エ
ア循環系路上にフイルタを設けた磁気デイスク装
置において、上記ベース内周部のエア循環孔より
内側のベース上および上記回転軸駆動用プーリと
対向するベース下面上のうち少くとも一方に外部
からのエア流入防止手段を設けたことを特徴とす
る。磁気デイスク装置。 ２ 前記エア流入防止手段は、前記ハブ内周面に
近接してベース上に設けた環状壁により構成した
ことを特徴とする実用新案登録請求の範囲第１項
記載の磁気デイスク装置。 ３ 前記エア流入防止手段は、前記ハブ下端部お
よびこれに対面するベース側に設けた相互に係合
する少くとも１対の凹部および凸部からなるラビ
リンスにより構成したことを特徴とする実用新案
登録請求の範囲第１項記載の磁気デイスク装置。 ４ 前記エア流入防止手段は、前記回転軸駆動用
プーリおよびこれに対面するベース側に設けた相
互に係合する少くとも１対の凹部および凸部から
なるラビリンスにより構成したことを特徴とする
実用新案登録請求の範囲第１項記載の磁気デイス
ク装置。[Claims for Utility Model Registration] 1. A rotating shaft is installed in the center of the base via a bearing, a pulley for driving the rotating shaft is fixed on the rotating shaft on the lower surface of the base, and a magnetic disk is mounted on the rotating shaft on the upper surface of the base. The mounting hub is fixed, the top side of the base is covered with a cover and the magnetic disk is sealed inside, air circulation holes are formed on the inner and outer periphery of the base, and an air duct is provided on the bottom side of the base to connect both air circulation holes. In a magnetic disk device in which an internal air circulation system is formed by forming an internal air circulation system, and a filter is provided on the internal air circulation system, on the base inside the air circulation hole in the inner circumference of the base and on the rotary shaft driving pulley. The present invention is characterized in that means for preventing air from flowing in from the outside is provided on at least one of the opposing lower surfaces of the base. magnetic disk device. 2. The magnetic disk device according to claim 1, wherein the air inflow prevention means is constituted by an annular wall provided on the base adjacent to the inner circumferential surface of the hub. 3. A utility model registration characterized in that the air inflow prevention means is constituted by a labyrinth consisting of at least one pair of mutually engaging recesses and protrusions provided on the lower end of the hub and the base side facing the hub. A magnetic disk device according to claim 1. 4. A practical application characterized in that the air inflow prevention means is constituted by a labyrinth comprising at least one pair of mutually engaging recesses and protrusions provided on the rotary shaft drive pulley and the base side facing the pulley. A magnetic disk device according to claim 1 of patent registration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985125683U JPH042477Y2 (en) | 1985-08-19 | 1985-08-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985125683U JPH042477Y2 (en) | 1985-08-19 | 1985-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6255299U true JPS6255299U (en) | 1987-04-06 |
| JPH042477Y2 JPH042477Y2 (en) | 1992-01-28 |
Family
ID=31018793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985125683U Expired JPH042477Y2 (en) | 1985-08-19 | 1985-08-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH042477Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6445334U (en) * | 1987-09-11 | 1989-03-20 | ||
| JP2013206475A (en) * | 2012-03-27 | 2013-10-07 | Minebea Co Ltd | Spindle motor and disk driving device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57105863A (en) * | 1980-12-22 | 1982-07-01 | Nec Corp | Magnetic disc device |
-
1985
- 1985-08-19 JP JP1985125683U patent/JPH042477Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57105863A (en) * | 1980-12-22 | 1982-07-01 | Nec Corp | Magnetic disc device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6445334U (en) * | 1987-09-11 | 1989-03-20 | ||
| JP2013206475A (en) * | 2012-03-27 | 2013-10-07 | Minebea Co Ltd | Spindle motor and disk driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH042477Y2 (en) | 1992-01-28 |
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