JPS6429535U - - Google Patents
Info
- Publication number
- JPS6429535U JPS6429535U JP12460387U JP12460387U JPS6429535U JP S6429535 U JPS6429535 U JP S6429535U JP 12460387 U JP12460387 U JP 12460387U JP 12460387 U JP12460387 U JP 12460387U JP S6429535 U JPS6429535 U JP S6429535U
- Authority
- JP
- Japan
- Prior art keywords
- annular
- pole piece
- shaft
- magnet
- sealing device
- 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
- Rotational Drive Of Disk (AREA)
Description
第１〜５図はそれぞれこの考案の第１〜５実施
例の断面図、第６図は従来のデイスク装置に使用
されている磁性流体シール装置の断面図、第７図
は第６図の要部断面図である。
１……ハウジング、２……シヤフト、８……磁
性流体、１１，１５，１９……環状の磁石、１２
，１３，２０……環状のポールピース、１４，１
６，２１……環状のゴム（弾性部材）。
1 to 5 are cross-sectional views of the first to fifth embodiments of this invention, FIG. 6 is a cross-sectional view of a magnetic fluid seal device used in a conventional disk device, and FIG. 7 is a summary of FIG. 6. FIG. DESCRIPTION OF SYMBOLS 1... Housing, 2... Shaft, 8... Magnetic fluid, 11, 15, 19... Annular magnet, 12
, 13, 20...Annular pole piece, 14, 1
6, 21...Annular rubber (elastic member).
Claims (1)
して取り付けた磁性体のシヤフトと、このシヤフ
トとの間に隙間を設けてハウジングに固定し、か
つ、同シヤフトとの間に磁界を形成するシール部
材と、前記隙間に前記磁界によつて保持した磁性
流体とを有するシール装置において、前記シール
部材は、環状の磁石と、この磁石の端面に固着し
た環状のポールピースと、磁石とポールピースの
外周部にそのポールピースを芯金として固着した
環状の弾性部材とより形成したことを特徴とする
磁性流体シール装置。 (2) 環状のポールピースは、芯金専用の環状の
金属板であることを特徴とする実用新案登録請求
の範囲第１項に記載の磁性流体シール装置。[Claims for Utility Model Registration] (1) A housing, a magnetic shaft attached to the housing via a bearing, and a shaft fixed to the housing with a gap between the shaft and the shaft. In a sealing device including a sealing member that forms a magnetic field therebetween, and a magnetic fluid held in the gap by the magnetic field, the sealing member includes an annular magnet and an annular pole piece fixed to an end surface of the magnet. A magnetic fluid sealing device comprising: a magnet; and an annular elastic member having the pole piece fixed to the outer periphery of the pole piece as a core metal. (2) The magnetic fluid sealing device according to claim 1, wherein the annular pole piece is an annular metal plate dedicated to the core metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12460387U JPS6429535U (en) | 1987-08-17 | 1987-08-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12460387U JPS6429535U (en) | 1987-08-17 | 1987-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6429535U true JPS6429535U (en) | 1989-02-22 |
Family
ID=31374483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12460387U Pending JPS6429535U (en) | 1987-08-17 | 1987-08-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6429535U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5712167A (en) * | 1980-06-23 | 1982-01-22 | Nippon Seiko Kk | Magnetic fluid sealing device |
-
1987
- 1987-08-17 JP JP12460387U patent/JPS6429535U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5712167A (en) * | 1980-06-23 | 1982-01-22 | Nippon Seiko Kk | Magnetic fluid sealing device |
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