JPS61182961U - - Google Patents
Info
- Publication number
- JPS61182961U JPS61182961U JP6661485U JP6661485U JPS61182961U JP S61182961 U JPS61182961 U JP S61182961U JP 6661485 U JP6661485 U JP 6661485U JP 6661485 U JP6661485 U JP 6661485U JP S61182961 U JPS61182961 U JP S61182961U
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- step motor
- base
- magnet
- magnetic fluid
- 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 5
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 2
Landscapes
- Moving Of Heads (AREA)
- 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一実
施例を示す一部断面側面図、第２図は本考案の他
の実施例を示す一部断面側面図である。
１……ステツプモータ、２……基台、２ａ……
貫通孔、４……回転軸、６……磁性流体シール用
マグネツト、７……磁性流体オイル、８……段付
部。
FIG. 1 is a partially sectional side view showing one embodiment of a magnetic disk device according to the present invention, and FIG. 2 is a partially sectional side view showing another embodiment of the present invention. 1...Step motor, 2...Base, 2a...
Through hole, 4...Rotating shaft, 6...Magnetic fluid sealing magnet, 7...Magnetic fluid oil, 8...Stepped portion.
Claims (1)
めを行なう磁気デイスク装置において、前記ステ
ツプモータをその外側に固設した基台と、この基
台に形成された貫通孔を介してこの基台の内側に
突出する前記ステツプモータの回転軸と、この回
転軸と同心状に前記基台に気密に固設された円筒
状の磁性流体シール用マグネツトと、前記回転軸
の外周面とこのマグネツトの内周面との間に形成
された磁性流体オイル層とを設けたことを特徴と
する磁気デイスク装置。 (2) 前記ステツプモータの回転軸の前記磁性流
体シール用マグネツトに対向する部分は、この回
転軸の他の部分より外径が大きい段付部が形成さ
れ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 magnetic disk device in which a magnetic head is positioned by a step motor, which includes a base on which the step motor is fixedly mounted on the outside thereof, and a through hole formed in the base. A rotating shaft of the step motor protruding inside the base of the lever, a cylindrical magnetic fluid sealing magnet airtightly fixed to the base concentrically with the rotating shaft, and an outer peripheral surface of the rotating shaft. and a magnetic fluid oil layer formed between the magnet and the inner peripheral surface of the magnet. (2) A request for registration of a utility model, characterized in that the portion of the rotating shaft of the step motor that faces the magnetic fluid sealing magnet is formed with a stepped portion having a larger outer diameter than other portions of the rotating shaft. A magnetic disk device according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6661485U JPS61182961U (en) | 1985-05-07 | 1985-05-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6661485U JPS61182961U (en) | 1985-05-07 | 1985-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61182961U true JPS61182961U (en) | 1986-11-14 |
Family
ID=30599690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6661485U Pending JPS61182961U (en) | 1985-05-07 | 1985-05-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61182961U (en) |
-
1985
- 1985-05-07 JP JP6661485U patent/JPS61182961U/ja active Pending
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