JPS61197357U - - Google Patents
Info
- Publication number
- JPS61197357U JPS61197357U JP8019485U JP8019485U JPS61197357U JP S61197357 U JPS61197357 U JP S61197357U JP 8019485 U JP8019485 U JP 8019485U JP 8019485 U JP8019485 U JP 8019485U JP S61197357 U JPS61197357 U JP S61197357U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- sealing device
- permanent magnet
- fluid sealing
- magnet
- 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.)
- Granted
Links
- 239000011553 magnetic fluid Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000696 magnetic material Substances 0.000 claims 2
- 239000000463 material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案になる磁性流体シール装置本体
の一実施例を示す断面図でａは磁石の外周が円筒
状を示すものｂはシール装置本体の装着を容易と
する為磁石の外周に丸みを持たせたもの、第２図
は前記磁性流体シール装置の装着状態を示す組立
図、第３図は従来技術の磁性流体シール装置本体
の実施例を示す断面図、第４図は第３図のシール
装置の実装状を示す組立図、第５図は従来技術の
他の実施例の断面図、第６図は同実施状態を示す
組立図である。
符号の説明、１……磁性流体シール装置本体、
１―１……中心孔、１―２……凹み、２……マグ
ネツト、２―１……マグネツトの外周、２―２…
…マグネツトの突出部、３……ポールピース、３
―１……ポールピースの外周、４……磁性流体、
５……回転軸、６……器機のブラケツト、６―１
……シール装着孔、７……軸受、８……ゴムリン
グ。
Figure 1 is a cross-sectional view showing one embodiment of the magnetic fluid sealing device main body according to the present invention, in which a shows a cylindrical outer periphery of the magnet, and b shows a rounded outer periphery of the magnet to facilitate attachment of the sealing device main body. 2 is an assembly diagram showing the installed state of the magnetic fluid sealing device, FIG. 3 is a sectional view showing an embodiment of the magnetic fluid sealing device main body of the prior art, and FIG. FIG. 5 is a cross-sectional view of another embodiment of the prior art, and FIG. 6 is an assembled view showing the same implementation state. Explanation of symbols, 1...Magnetic fluid seal device main body,
1-1... Center hole, 1-2... Recess, 2... Magnet, 2-1... Outer circumference of magnet, 2-2...
... Protrusion of magnet, 3 ... Pole piece, 3
-1...Outer circumference of pole piece, 4...Magnetic fluid,
5...Rotating shaft, 6...Equipment bracket, 6-1
... Seal mounting hole, 7 ... Bearing, 8 ... Rubber ring.
Claims (1)
た円板状の永久磁石の両端面に、磁性体より成り
前記永久磁石の中央部小孔と、略同じ寸法の孔を
形成した２個のポールピースを密接固着して磁性
流体シール装置本体と成し、該シール装置本体と
軟磁性体より成り、前記中心部の孔に貫通配設さ
れた回転軸との間の隙間に、磁性流体を挿入・捕
捉して成る磁性流体シール装置において、上記２
個のポールピースの外径より、該２個のポールピ
ースに挟持された久磁石の外径を僅かに大きく形
成した事を特徴とする磁性流体シール装置。 (2) 上記永久磁石が軟質基材のプラスチツク磁
石より成る、実用新案登録請求の範囲第１項記載
の磁性流体シール装置。 (3) 上記永久磁石がゴム磁石より成る実用新案
登録請求の範囲第１項記載の磁性流体シール装置
。[Claims for Utility Model Registration] (1) A disc-shaped permanent magnet that is magnetized in the axial direction and has a small hole in the center has a magnetic material on both end surfaces, and a small hole in the center of the permanent magnet. A magnetic fluid sealing device body is formed by closely fixing two pole pieces each having a hole of approximately the same size, and the magnetic fluid sealing device body is made of a soft magnetic material and is disposed through the central hole. In a magnetic fluid seal device in which a magnetic fluid is inserted and captured in a gap between the rotating shaft and the rotating shaft, the above-mentioned 2.
A magnetic fluid sealing device characterized in that the outer diameter of a permanent magnet held between the two pole pieces is slightly larger than the outer diameter of each of the two pole pieces. (2) The magnetic fluid sealing device according to claim 1, wherein the permanent magnet is made of a plastic magnet with a soft base material. (3) The magnetic fluid sealing device according to claim 1, wherein the permanent magnet is a rubber magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985080194U JPH0222528Y2 (en) | 1985-05-30 | 1985-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985080194U JPH0222528Y2 (en) | 1985-05-30 | 1985-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61197357U true JPS61197357U (en) | 1986-12-09 |
| JPH0222528Y2 JPH0222528Y2 (en) | 1990-06-18 |
Family
ID=30625814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985080194U Expired JPH0222528Y2 (en) | 1985-05-30 | 1985-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0222528Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS519853A (en) * | 1974-07-03 | 1976-01-26 | Suwa Seikosha Kk | EKISHOHAIKOYOSUMAKUNIOKERU BUNSHIHOKONO KET SUTEIHOHO |
-
1985
- 1985-05-30 JP JP1985080194U patent/JPH0222528Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS519853A (en) * | 1974-07-03 | 1976-01-26 | Suwa Seikosha Kk | EKISHOHAIKOYOSUMAKUNIOKERU BUNSHIHOKONO KET SUTEIHOHO |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0222528Y2 (en) | 1990-06-18 |
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