JPS60137273U - magnetic fluid seal - Google Patents
magnetic fluid sealInfo
- Publication number
- JPS60137273U JPS60137273U JP2637384U JP2637384U JPS60137273U JP S60137273 U JPS60137273 U JP S60137273U JP 2637384 U JP2637384 U JP 2637384U JP 2637384 U JP2637384 U JP 2637384U JP S60137273 U JPS60137273 U JP S60137273U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- yoke
- fluid seal
- rotating shaft
- annular
- 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
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
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
第１図は従来の磁性流体シールの半縦断面図、第２図は
この考案の実施例の半縦断面図、第３図は別の実施例の
要部縦断面図である。
１・・・永久磁石、３・・・回転軸、４・・・ケーシン
グ、１１・・・ヨーク、１２．１４・・・微小突起、１
３・・・保護膜。FIG. 1 is a half-longitudinal sectional view of a conventional magnetic fluid seal, FIG. 2 is a half-longitudinal sectional view of an embodiment of this invention, and FIG. 3 is a longitudinal sectional view of a main part of another embodiment. DESCRIPTION OF SYMBOLS 1... Permanent magnet, 3... Rotating shaft, 4... Casing, 11... Yoke, 12.14... Microprotrusion, 1
3...Protective film.
Claims (3)
永久磁石の両端面に接する一対の環状のヨークとからな
り、前記ヨークの内周と摺接する外径を有する回転軸に
挿通され、前記回転軸り摺動面との間に磁性流体を保持
した磁性流体シールであって、前記ヨークは連続し微小
空孔を有する多孔質の強磁性体からなり、前記空孔ｊ・
こ補給用磁性流体を充填し、前記ヨークの外側両端面を
液密性の保護膜で被覆したことを特徴とする磁性流体シ
ール。(1) Consisting of a cylindrical permanent magnet and a pair of annular yokes supported by a casing and in contact with both end surfaces of the permanent magnet, the rotary shaft is inserted through a rotating shaft having an outer diameter that slides on the inner circumference of the yoke, and the A magnetic fluid seal holding a magnetic fluid between a rotating shaft and a sliding surface, wherein the yoke is made of a porous ferromagnetic material having continuous micro holes, and the holes j.
A magnetic fluid seal characterized in that the yoke is filled with the replenishing magnetic fluid and both outer end surfaces of the yoke are covered with a liquid-tight protective film.
起を設けた実用新案登録請求の範囲第１項記載の磁性流
体シール。(2) The magnetic fluid seal according to claim 1, wherein a plurality of annular micro-A projections are provided on the inner peripheral surface of the yoke.
突起を設けた実用新案登録請求の範囲第１項記載の磁性
流体シール。(3) The magnetic fluid seal according to claim 1, wherein a plurality of annular minute protrusions are provided on the sliding surface of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2637384U JPS60137273U (en) | 1984-02-23 | 1984-02-23 | magnetic fluid seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2637384U JPS60137273U (en) | 1984-02-23 | 1984-02-23 | magnetic fluid seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60137273U true JPS60137273U (en) | 1985-09-11 |
Family
ID=30522319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2637384U Pending JPS60137273U (en) | 1984-02-23 | 1984-02-23 | magnetic fluid seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60137273U (en) |
-
1984
- 1984-02-23 JP JP2637384U patent/JPS60137273U/en active Pending
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