JPH01118256U - - Google Patents
Info
- Publication number
- JPH01118256U JPH01118256U JP1314088U JP1314088U JPH01118256U JP H01118256 U JPH01118256 U JP H01118256U JP 1314088 U JP1314088 U JP 1314088U JP 1314088 U JP1314088 U JP 1314088U JP H01118256 U JPH01118256 U JP H01118256U
- Authority
- JP
- Japan
- Prior art keywords
- annular
- housing
- shaft
- conductive
- 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
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
第1図はこの考案の実施例の縦断面図、第2図
は同実施例の横断面図、第3図は第1図における
シール部材の製造手順を説明するための斜視図、
第4図は第1図における導電性プレートの他の態
様を示す平面図、第5図は従来の導電性磁性流体
シール装置の縦断面図、第6図は第5図の要部拡
大図、第7図は第5図の横断面図である。
1……ハウジング、2……シヤフト、7……磁
性流体、11……環状の導電性プレート、11a
……可撓片、C1……環状のシール部材、14,
15……環状のポールピース、16……環状の磁
石。
FIG. 1 is a longitudinal cross-sectional view of an embodiment of this invention, FIG. 2 is a cross-sectional view of the same embodiment, and FIG. 3 is a perspective view for explaining the manufacturing procedure of the seal member in FIG. 1.
FIG. 4 is a plan view showing another aspect of the conductive plate in FIG. 1, FIG. 5 is a longitudinal cross-sectional view of a conventional conductive magnetic fluid sealing device, and FIG. 6 is an enlarged view of the main part of FIG. FIG. 7 is a cross-sectional view of FIG. 5. DESCRIPTION OF SYMBOLS 1... Housing, 2... Shaft, 7... Magnetic fluid, 11... Annular conductive plate, 11a
... Flexible piece, C 1 ... Annular sealing member, 14,
15...Annular pole piece, 16...Annular magnet.
Claims (1)
ヤフトと、環状の磁石とその端面に同軸的に固着
した環状の導電性プレートとその端面に導電可能
に同軸的に固着した環状のポールピースとを有し
、かつ環状のポールピースとシヤフトまたはハウ
ジングとの間に隙間を設けてハウジングまたはシ
ヤフトに固定した環状のシール部材と、前記隙間
に環状の磁石の磁力で保持した磁性流体とよりな
り、かつ前記導電性プレートは、シヤフトまたは
ハウジングによつて弾性変形して、前記磁性流体
部分において、同シヤフトまたはハウジングに弾
性接触する可撓片を備えていることを特徴とする
導電性磁性流体シール装置。 It has a housing and a shaft that rotate relative to each other via a bearing, an annular magnet, an annular conductive plate coaxially fixed to the end surface of the magnet, and an annular pole piece coaxially fixed to the end surface in a conductive manner, and an annular sealing member fixed to the housing or shaft with a gap provided between the annular pole piece and the shaft or housing, and a magnetic fluid held in the gap by the magnetic force of an annular magnet, and the conductive A conductive magnetic fluid sealing device, characterized in that the plate includes a flexible piece that is elastically deformed by the shaft or housing and comes into elastic contact with the shaft or housing in the magnetic fluid portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1314088U JPH01118256U (en) | 1988-02-03 | 1988-02-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1314088U JPH01118256U (en) | 1988-02-03 | 1988-02-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01118256U true JPH01118256U (en) | 1989-08-10 |
Family
ID=31223207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1314088U Pending JPH01118256U (en) | 1988-02-03 | 1988-02-03 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01118256U (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63152773A (en) * | 1986-12-15 | 1988-06-25 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic fluid seal |
-
1988
- 1988-02-03 JP JP1314088U patent/JPH01118256U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63152773A (en) * | 1986-12-15 | 1988-06-25 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic fluid seal |