JPS63145016U - - Google Patents
Info
- Publication number
- JPS63145016U JPS63145016U JP3674187U JP3674187U JPS63145016U JP S63145016 U JPS63145016 U JP S63145016U JP 3674187 U JP3674187 U JP 3674187U JP 3674187 U JP3674187 U JP 3674187U JP S63145016 U JPS63145016 U JP S63145016U
- Authority
- JP
- Japan
- Prior art keywords
- circumferential surface
- thrust
- sleeve
- outer circumferential
- radial outer
- 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
- 239000011148 porous material Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 description 2
Description
第１図は本考案の第１実施例に係る流体軸受の
簡略化した断正面図、第２図は本考案の第２実施
例に係る一部割愛した断正面図、第３図は本考案
の第３実施例に係る一部割愛した断正面図、第４
図は第１の従来例の断正面図、第５図は第２の従
来例の断正面図である。
１……スリーブ、２……ラジアル内周面、４…
…スラスト底面、６……軸体、８……ラジア外周
面、９……スラスト端面、１０……動圧発生用の
溝、１１……マグネツト、１３……コイル、１４
……ヨーク、１５……流入口、１７，１７′……
スラスト底面部材、１８……隙間、Ｐ……多孔質
材料。
FIG. 1 is a simplified sectional front view of a hydrodynamic bearing according to a first embodiment of the present invention, FIG. 2 is a partially omitted sectional front view of a second embodiment of the present invention, and FIG. 3 is a simplified sectional front view of a hydrodynamic bearing according to a first embodiment of the present invention. A partially omitted cross-sectional front view of the third embodiment of the fourth embodiment.
The figure is a sectional front view of the first conventional example, and FIG. 5 is a sectional front view of the second conventional example. 1...Sleeve, 2...Radial inner peripheral surface, 4...
... Thrust bottom surface, 6 ... Shaft body, 8 ... Radia outer peripheral surface, 9 ... Thrust end surface, 10 ... Groove for dynamic pressure generation, 11 ... Magnet, 13 ... Coil, 14
... Yoke, 15 ... Inlet, 17, 17' ...
Thrust bottom member, 18... Gap, P... Porous material.
Claims (1)
外周面と協働するラジアル内周面を有するスリー
ブとが、一方を回転側とし他方を固定側として相
対回転し、前記スリーブの両端面方向から、前記
ラジアル外周面とラジアル内周面との間の微小隙
間に流体を導くように、ラジアル外周面及び／又
はラジアル内周面に動圧発生用の溝が形成された
構成において、 前記スリーブの一端面を覆うスラスト底面部材
を設け、該スラスト底面部材の少なくとも一部、
もしくはスラスト底面部材に対応する前記軸体の
スラスト端面の少なくとも一部を、流体が通過可
能な多孔質材料で形成して外部と連通すると共に
、静止時においても前記スラスト底面部材と前記
スラスト端面との間に所定隙間があるように、回
転側となる前記スリーブもしくは前記軸体を磁気
的保持力によつて保持したことを特徴とする流体
軸受。[Claims for Utility Model Registration] A shaft body having a radial outer circumferential surface and a sleeve having a radial inner circumferential surface cooperating with the radial outer circumferential surface rotate relative to each other with one side being a rotating side and the other being a stationary side, Grooves for generating dynamic pressure are formed on the radial outer circumferential surface and/or the radial inner circumferential surface so as to guide fluid from the direction of both end surfaces of the sleeve into the minute gap between the radial outer circumferential surface and the radial inner circumferential surface. In the configuration, a thrust bottom member is provided that covers one end surface of the sleeve, at least a portion of the thrust bottom member;
Alternatively, at least a part of the thrust end face of the shaft body corresponding to the thrust bottom member is formed of a porous material through which fluid can pass, and communicates with the outside, and the thrust bottom face member and the thrust end face are connected to each other even when at rest. A hydrodynamic bearing characterized in that the sleeve or the shaft on the rotating side is held by magnetic holding force so that there is a predetermined gap between them.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987036741U JPH0642094Y2 (en) | 1987-03-13 | 1987-03-13 | Fluid bearing |
| US07/160,774 US4820950A (en) | 1987-03-03 | 1988-02-26 | Fluid Bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987036741U JPH0642094Y2 (en) | 1987-03-13 | 1987-03-13 | Fluid bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63145016U true JPS63145016U (en) | 1988-09-26 |
| JPH0642094Y2 JPH0642094Y2 (en) | 1994-11-02 |
Family
ID=30847430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987036741U Expired - Lifetime JPH0642094Y2 (en) | 1987-03-03 | 1987-03-13 | Fluid bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0642094Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0314316U (en) * | 1989-06-27 | 1991-02-13 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58224324A (en) * | 1982-06-24 | 1983-12-26 | Toshiba Corp | Rotating mirror optical deflector |
| JPS61211517A (en) * | 1985-03-15 | 1986-09-19 | Canon Inc | Dynamic pressure hydraulic bearing device |
-
1987
- 1987-03-13 JP JP1987036741U patent/JPH0642094Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58224324A (en) * | 1982-06-24 | 1983-12-26 | Toshiba Corp | Rotating mirror optical deflector |
| JPS61211517A (en) * | 1985-03-15 | 1986-09-19 | Canon Inc | Dynamic pressure hydraulic bearing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0314316U (en) * | 1989-06-27 | 1991-02-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0642094Y2 (en) | 1994-11-02 |