JPH0454368U - - Google Patents
Info
- Publication number
- JPH0454368U JPH0454368U JP9790190U JP9790190U JPH0454368U JP H0454368 U JPH0454368 U JP H0454368U JP 9790190 U JP9790190 U JP 9790190U JP 9790190 U JP9790190 U JP 9790190U JP H0454368 U JPH0454368 U JP H0454368U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnet
- permanent magnet
- annular permanent
- 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
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Soft Magnetic Materials (AREA)
Description
第１図は本考案の一例を示す断面図、第２図は
従来の磁性流体シールの断面図である。
１……永久磁石（ゴム磁石）、２ａ，２ｂ……
軟磁性ヨーク、３……ハウジング、４……回転軸
、５……磁性流体、６……カバー、７……Ｏリン
グ。
FIG. 1 is a sectional view showing an example of the present invention, and FIG. 2 is a sectional view of a conventional magnetic fluid seal. 1...Permanent magnet (rubber magnet), 2a, 2b...
Soft magnetic yoke, 3...housing, 4...rotating shaft, 5...magnetic fluid, 6...cover, 7...O ring.
Claims (1)
の永久磁石と該環状の永久磁石の両極に接して設
置された２個の軟磁性ヨークとで組立てられた磁
性流体シールにおいて、前記環状の永久磁石をゴ
ム磁石にて構成し軟磁性ヨークの一方の外径を永
久磁石の外径よりも小さくしたことを特徴とする
磁性流体シール。 In a magnetic fluid seal assembled with an annular permanent magnet placed on a magnetic rotating body via a magnetic fluid and two soft magnetic yokes installed in contact with both poles of the annular permanent magnet, the annular permanent A magnetic fluid seal characterized in that the magnet is made of a rubber magnet and the outer diameter of one side of the soft magnetic yoke is smaller than the outer diameter of the permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9790190U JPH0454368U (en) | 1990-09-17 | 1990-09-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9790190U JPH0454368U (en) | 1990-09-17 | 1990-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454368U true JPH0454368U (en) | 1992-05-11 |
Family
ID=31838656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9790190U Pending JPH0454368U (en) | 1990-09-17 | 1990-09-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006292036A (en) * | 2005-04-08 | 2006-10-26 | Koyo Electronics Ind Co Ltd | Dust-proof mechanism of encoder |
-
1990
- 1990-09-17 JP JP9790190U patent/JPH0454368U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006292036A (en) * | 2005-04-08 | 2006-10-26 | Koyo Electronics Ind Co Ltd | Dust-proof mechanism of encoder |