JPS6465368A - Seal device utilizing magnetic fluid - Google Patents
Seal device utilizing magnetic fluidInfo
- Publication number
- JPS6465368A JPS6465368A JP62218265A JP21826587A JPS6465368A JP S6465368 A JPS6465368 A JP S6465368A JP 62218265 A JP62218265 A JP 62218265A JP 21826587 A JP21826587 A JP 21826587A JP S6465368 A JPS6465368 A JP S6465368A
- Authority
- JP
- Japan
- Prior art keywords
- peripheral surface
- seal
- magnetic fluid
- shaft
- sides
- 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
Abstract
PURPOSE:To enable increase of an amount of magnetic fluid held and to improve durability of a seal, by a method wherein a pair of annular pole pieces formed by a magnetic material are laminated on both sides of an annular magnet body, the inside and the outside of which form different poles, to form a seal body. CONSTITUTION:Annular pole pieces 2a and 2b made of a magnetic material are laminated on both sides of an annular magnet body 1 the outer and the inside of which form different poles to form a seal body 3. The inner peripheral surfaces of the pole pieces 2a and 2b are protruded toward the central part side from the inner peripheral surface of the magnet body 1. A shaft 5 is pivotally supported in a central hole 4 by means of a bearing 10. Magnetic fluid 6 is located between the inner peripheral surface of the seal body 3 and the outer peripheral surface of the shaft 5. Thus, the magnetic flux, generated on the outer peripheral surface side of the shaft 5, of the seal body 3 is distributed to a region close to the outer peripheral surface side of the shaft 5. Since the pole pieces 2a and 2b are laminated to both sides of the magnet body 1, a region where a magnetic flux is generated is spread toward both sides of the magnet body 1, and an amount of magnetic fluid 6 held is increased. This constitution improves durability of a seal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62218265A JPS6465368A (en) | 1987-09-01 | 1987-09-01 | Seal device utilizing magnetic fluid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62218265A JPS6465368A (en) | 1987-09-01 | 1987-09-01 | Seal device utilizing magnetic fluid |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6465368A true JPS6465368A (en) | 1989-03-10 |
Family
ID=16717162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62218265A Pending JPS6465368A (en) | 1987-09-01 | 1987-09-01 | Seal device utilizing magnetic fluid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6465368A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017044315A (en) * | 2015-08-28 | 2017-03-02 | グローブライド株式会社 | Bearing with magnetic fluid seal |
-
1987
- 1987-09-01 JP JP62218265A patent/JPS6465368A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017044315A (en) * | 2015-08-28 | 2017-03-02 | グローブライド株式会社 | Bearing with magnetic fluid seal |
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