JPH0365015U - - Google Patents
Info
- Publication number
- JPH0365015U JPH0365015U JP12558689U JP12558689U JPH0365015U JP H0365015 U JPH0365015 U JP H0365015U JP 12558689 U JP12558689 U JP 12558689U JP 12558689 U JP12558689 U JP 12558689U JP H0365015 U JPH0365015 U JP H0365015U
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- bearing sleeve
- circumferential surface
- magnetic
- outer circumferential
- 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 2
- 239000000696 magnetic material Substances 0.000 claims 2
- 230000005415 magnetization Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
- F16C32/0685—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for radial load only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/0633—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being retained in a gap
- F16C32/0637—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being retained in a gap by a magnetic field, e.g. ferrofluid bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Description
第１図から第３図は本考案の一実施例を示し、
第１図は軸受構造を備えたブラシレスモータ全体
の縦断面図、第２図は第１図中−線に沿う軸
受構造の断面図、第３図は軸受スリーブ内面にお
ける磁界の分布を示す図である。第４図は従来の
動圧軸受構造を示す縦断面図である。
２５……軸受スリーブ、２６……回転軸、２７
……磁性流体。
1 to 3 show an embodiment of the present invention,
Figure 1 is a vertical cross-sectional view of the entire brushless motor equipped with a bearing structure, Figure 2 is a cross-sectional view of the bearing structure taken along the line - in Figure 1, and Figure 3 is a diagram showing the distribution of the magnetic field on the inner surface of the bearing sleeve. be. FIG. 4 is a longitudinal sectional view showing a conventional dynamic pressure bearing structure. 25... Bearing sleeve, 26... Rotating shaft, 27
...Magnetic fluid.
Claims (1)
に沿う着磁により設けられる４極以上で偶数の異
極配列される磁極を、周方向に沿つて等角度で有
した軸受スリーブと、この軸受スリーブ内に挿入
された非磁性材料製の回転軸と、この回転軸の外
周面と上記軸受スリーブの内周面との間において
、上記軸受スリーブの互いに隣接する異極の磁極
同志の隣接端部間にわたつて保持されるとともに
、上記回転軸の外周面に接して設けられた磁性流
体とを具備したことを特徴とする軸受構造。 A bearing sleeve formed of a magnetic material into a cylindrical shape and having an even number of different magnetic poles arranged at equal angles along the circumferential direction, with four or more poles provided by magnetization along the radial direction, and this bearing sleeve. between the adjacent ends of mutually adjacent magnetic poles of different polarities of the bearing sleeve, between the rotating shaft made of a non-magnetic material inserted therein, the outer circumferential surface of the rotating shaft and the inner circumferential surface of the bearing sleeve; What is claimed is: 1. A bearing structure comprising: a magnetic fluid that is held across the rotating shaft and is provided in contact with an outer circumferential surface of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12558689U JPH0365015U (en) | 1989-10-30 | 1989-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12558689U JPH0365015U (en) | 1989-10-30 | 1989-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0365015U true JPH0365015U (en) | 1991-06-25 |
Family
ID=31673449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12558689U Pending JPH0365015U (en) | 1989-10-30 | 1989-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0365015U (en) |
-
1989
- 1989-10-30 JP JP12558689U patent/JPH0365015U/ja active Pending