JPS59103964U

JPS59103964U - magnetic seal

Info

Publication number: JPS59103964U
Application number: JP19960482U
Authority: JP
Inventors: 「とち」山　和則
Original assignee: 富士通株式会社
Priority date: 1982-12-28
Filing date: 1982-12-28
Publication date: 1984-07-12

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は磁気ディスク装置のスピンドル部に従来のラビ
リンスを使用した場合の説明図、第２図は従来の磁性シ
ールを磁気ディスク装置のスピンドル部に使用した場合
の説明図、第３図は第２図の要部拡大図、−第４図は本
考案に係る磁性シールを取付けた時の概略説明図、第５
図は第４図の要部拡大図を示す。１１・・・回転軸、１２・・・軸受、１３・・・ハウジ
ング、１４−・・磁性シール、１５ａ、　　１５ｂ−・
・円板、１６ａ。１６ｂ・・・中心孔、１７・・・磁石、１８・・・凹溝
、Ｐ・・・磁性膜。Figure 1 is an explanatory diagram of the case where a conventional labyrinth is used in the spindle of a magnetic disk drive, Figure 2 is an explanatory diagram of the case where a conventional magnetic seal is used in the spindle of a magnetic disk drive, and Figure 3 is an explanatory diagram of the case where a conventional labyrinth is used in the spindle of a magnetic disk drive. Figure 2 is an enlarged view of the main parts, Figure 4 is a schematic explanatory diagram when the magnetic seal according to the present invention is installed, Figure 5 is an enlarged view of the main part,
The figure shows an enlarged view of the main part of FIG. 4. DESCRIPTION OF SYMBOLS 11... Rotating shaft, 12... Bearing, 13... Housing, 14-... Magnetic seal, 15a, 15b-...
- Disc, 16a. 16b...center hole, 17...magnet, 18...concave groove, P...magnetic film.

Claims

[Scope of utility model registration request]

In a sealing mechanism that seals between a rotating shaft and a housing holding its bearing, disks having a center hole are connected to each other facing each other via magnets, and these are attached to the rotating shaft, and the circular disks are connected to each other via magnets. Concentric grooves are bored on the surface of the plate, the grooves are filled with magnetic fluid, and the disk is rotated to form a magnetic film in the gap between the housing and the outer peripheral surface of the magnetic disk. A magnetic seal characterized by: