JPH0311176U

JPH0311176U -

Info

Publication number: JPH0311176U
Application number: JP7188289U
Authority: JP
Priority date: 1989-06-20
Filing date: 1989-06-20
Publication date: 1991-02-04

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る磁性流体シー
ル装置の要部縦断面図、第２図は第１図の装置の
磁力源を取り出して示す斜視図、第３図は本考案
の他の実施例に係る磁性流体シール装置の要部縦
断面図、第４図は第３図の装置の部分断面図、第
５図は第３図の装置の磁力源の成形状態を説明す
るための斜視図、第６図は従来の磁性流体シール
装置の要部縦断面図、第７図は第６図の装置の部
分断面図である。符号の説明、１……磁性流体モジユール、２…
…ハウジング、３……軸、４……磁性流体、５，
６……磁極、７……ヨーク、８……マグネシート
（磁力源）、ｇ……微小間隙、Ｈ……磁気回路。 FIG. 1 is a longitudinal cross-sectional view of a main part of a magnetic fluid sealing device according to an embodiment of the present invention, FIG. 2 is a perspective view showing the magnetic force source of the device shown in FIG. 1, and FIG. FIG. 4 is a partial cross-sectional view of the device shown in FIG. 3, and FIG. A perspective view, FIG. 6 is a vertical sectional view of a main part of a conventional magnetic fluid seal device, and FIG. 7 is a partial sectional view of the device shown in FIG. 6. Explanation of symbols, 1...Magnetic fluid module, 2...
...Housing, 3...Axis, 4...Magnetic fluid, 5,
6...Magnetic pole, 7...Yoke, 8...Magnesheet (magnetic force source), g...Minute gap, H...Magnetic circuit.

Claims

[Claims for Utility Model Registration] A rotating member rotatably supported within a housing, a pair of magnetic poles forming a minute gap between the rotating member and dividing the inside of the housing in the axial direction, and each of the magnetic poles. A magnetic fluid consisting of a magnetic force source interposed between the rotating member and the magnetic pole to form a magnetic circuit, and a magnetic fluid magnetically attracted within a minute gap formed between the rotating member and the magnetic pole. In attaching the seal, a yoke is provided that is interposed between the pair of magnetic poles and connects the magnetic poles, the magnetic source is made of a flexible member and is joined to the inner peripheral surface of the yoke, and the magnetic source is
A magnetic fluid seal device characterized in that a magnetic circuit is formed by a combination of a yoke, each magnetic pole, and a rotating member.