JPH0411972U - - Google Patents
Info
- Publication number
- JPH0411972U JPH0411972U JP5235090U JP5235090U JPH0411972U JP H0411972 U JPH0411972 U JP H0411972U JP 5235090 U JP5235090 U JP 5235090U JP 5235090 U JP5235090 U JP 5235090U JP H0411972 U JPH0411972 U JP H0411972U
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- housing
- magnetic unit
- cylindrical body
- magnetic
- 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 6
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
第１図乃至第１４図はこの考案の実施例を示し
、第１図乃至第８図は第一乃至第八実施例を示す
正面半断面図、第９図はシヤフトの回転数と、磁
気ユニツトとシヤフトとの相対回転数の関係を示
すグラフ、第１０図乃至第１４図は第九乃至第十
三実施例を示す正面半断面図、第１５図は従来の
磁性流体シールを示す正面半断面図である。
符号の説明、１……ハウジング、２……シヤフ
ト、３……磁性流体シール、４……磁気ユニツト
、５……マグネツト、６……ヨーク、７……スペ
ーサ、８……軸受、９……磁性流体、１０……フ
ランジ、１１……筒体、Ａ，Ｂ，Ｄ……微少隙間
。
Figures 1 to 14 show embodiments of this invention, Figures 1 to 8 are front half sectional views showing the first to eighth embodiments, and Figure 9 shows the rotational speed of the shaft and the magnetic unit. 10 to 14 are front half sectional views showing the ninth to 13th embodiments, and FIG. 15 is a front half sectional view showing a conventional magnetic fluid seal. It is a diagram. Explanation of symbols, 1...Housing, 2...Shaft, 3...Magnetic fluid seal, 4...Magnetic unit, 5...Magnet, 6...Yoke, 7...Spacer, 8...Bearing, 9... Magnetic fluid, 10... flange, 11... cylinder, A, B, D... minute gap.
Claims (1)
の間に環状の磁気ユニツトを設け、この磁気ユニ
ツトをハウジングとシヤフトの各々に対して相対
運動自在に保持するとともに、磁気ユニツトとハ
ウジングとの間、及び磁気ユニツトとシヤフトと
の間に形成した微少隙間に磁性流体を磁気吸着さ
せたことを特徴とする磁性流体シール。 (2) 相対運動が自在なハウジングとシヤフトと
の間に筒体を設け、この筒体をハウジングとシヤ
フトの各々に対して相対運動自在に保持するとと
もに、ハウジング及びシヤフトに各々環状の磁気
ユニツトを装着し、かつ、ハウジングに装着した
磁気ユニツトと筒体との間、及びシヤフトに装着
した磁気ユニツトと筒体との間に形成した微少隙
間に磁性流体を磁気吸着させたことを特徴とする
磁性流体シール。[Claims for Utility Model Registration] (1) An annular magnetic unit is provided between a housing and a shaft that can freely move relative to each other, and this magnetic unit is held so that it can move freely relative to each of the housing and the shaft, A magnetic fluid seal characterized in that a magnetic fluid is magnetically attracted to minute gaps formed between a magnetic unit and a housing and between a magnetic unit and a shaft. (2) A cylindrical body is provided between the housing and the shaft, which are movable relative to each other, and this cylindrical body is held so that the cylindrical body can be movable relative to each other, and an annular magnetic unit is attached to each of the housing and the shaft. Magnetic fluid is magnetically attracted to minute gaps formed between the magnetic unit attached to the housing and the cylindrical body, and between the magnetic unit attached to the shaft and the cylindrical body. Fluid seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5235090U JPH0411972U (en) | 1990-05-19 | 1990-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5235090U JPH0411972U (en) | 1990-05-19 | 1990-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0411972U true JPH0411972U (en) | 1992-01-30 |
Family
ID=31572579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5235090U Pending JPH0411972U (en) | 1990-05-19 | 1990-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0411972U (en) |
-
1990
- 1990-05-19 JP JP5235090U patent/JPH0411972U/ja active Pending