JPH01143468U - - Google Patents
Info
- Publication number
- JPH01143468U JPH01143468U JP4018488U JP4018488U JPH01143468U JP H01143468 U JPH01143468 U JP H01143468U JP 4018488 U JP4018488 U JP 4018488U JP 4018488 U JP4018488 U JP 4018488U JP H01143468 U JPH01143468 U JP H01143468U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- holding piece
- shaft
- inner peripheral
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000011553 magnetic fluid Substances 0.000 claims description 7
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
第1図は本考案の一実施例を示す断面図、第2
図〜第8図は他の実施例を示す断面図である。
1……軸、1a……外周面、6……マグネツト
、7……磁性流体保持ピース部、7a……内周端
縁、9……磁性流体、10……小凹溝、G……間
隙部。
Fig. 1 is a sectional view showing one embodiment of the present invention;
8 are sectional views showing other embodiments. DESCRIPTION OF SYMBOLS 1... Shaft, 1a... Outer peripheral surface, 6... Magnet, 7... Magnetic fluid holding piece part, 7a... Inner peripheral edge, 9... Magnetic fluid, 10... Small groove, G... Gap Department.
Claims (1)
は該マグネツト6自体をもつて形成されて軸1の
外周面1aに近接する磁性流体保持ピース部7と
、該軸1の外周面1aと該保持ピース部7の内周
端縁7aとの間隙部Gに保持される磁性流体9と
を、備えた磁性流体シール構造に於て、 上記軸1の外周面1aの内で、少くとも上記保
持ピース部7の内周端縁7aの対応する部位に、
及び/又は該保持ピース部7の内周端縁7aの内
周面に、上記磁性流体9を、該軸1と該保持ピー
ス部7との相対的回転運動により非飛散方向へ誘
引する傾斜状小凹溝10…を、設けたことを特徴
とする磁性流体シール構造。[Claims for Utility Model Registration] A magnet 6, a magnetic fluid holding piece 7 formed in contact with the magnet 6 or with the magnet 6 itself and close to the outer peripheral surface 1a of the shaft 1, and the shaft 1. In the magnetic fluid seal structure, the magnetic fluid 9 is held in the gap G between the outer peripheral surface 1a of the shaft 1 and the inner peripheral edge 7a of the holding piece part 7. At least at a corresponding portion of the inner peripheral edge 7a of the holding piece portion 7,
and/or an inclined surface on the inner peripheral surface of the inner peripheral edge 7a of the holding piece part 7, which attracts the magnetic fluid 9 in a non-scattering direction due to the relative rotational movement between the shaft 1 and the holding piece part 7; A magnetic fluid seal structure characterized in that small grooves 10 are provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988040184U JPH0640374Y2 (en) | 1988-03-25 | 1988-03-25 | Magnetic fluid seal structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988040184U JPH0640374Y2 (en) | 1988-03-25 | 1988-03-25 | Magnetic fluid seal structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01143468U true JPH01143468U (en) | 1989-10-02 |
JPH0640374Y2 JPH0640374Y2 (en) | 1994-10-19 |
Family
ID=31266659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988040184U Expired - Lifetime JPH0640374Y2 (en) | 1988-03-25 | 1988-03-25 | Magnetic fluid seal structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0640374Y2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57193454U (en) * | 1981-06-03 | 1982-12-08 | ||
JPS58187658U (en) * | 1982-06-09 | 1983-12-13 | 日本精工株式会社 | Magnetic fluid seal device |
-
1988
- 1988-03-25 JP JP1988040184U patent/JPH0640374Y2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57193454U (en) * | 1981-06-03 | 1982-12-08 | ||
JPS58187658U (en) * | 1982-06-09 | 1983-12-13 | 日本精工株式会社 | Magnetic fluid seal device |
Also Published As
Publication number | Publication date |
---|---|
JPH0640374Y2 (en) | 1994-10-19 |
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