JPH01172017U - - Google Patents
Info
- Publication number
- JPH01172017U JPH01172017U JP1988067467U JP6746788U JPH01172017U JP H01172017 U JPH01172017 U JP H01172017U JP 1988067467 U JP1988067467 U JP 1988067467U JP 6746788 U JP6746788 U JP 6746788U JP H01172017 U JPH01172017 U JP H01172017U
- Authority
- JP
- Japan
- Prior art keywords
- rotating body
- hollow rotating
- magnetic bearing
- type optical
- optical deflector
- 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
- 230000003287 optical effect Effects 0.000 claims description 5
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
-
- 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
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
-
- 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
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0427—Passive magnetic bearings with permanent magnets on both parts repelling each other for axial load mainly
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Sliding-Contact Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Description
第１図は本考案の一実施例に係る空気磁気軸受
型光偏向器の縦断面図、第２図は他の実施例に係
る空気磁気軸受型光偏向器の縦断面図、第３図ａ
，ｂは従来例、本考案の各場合における遠心膨張
の様子を示す図、第４図は従来例に係る空気磁気
軸受型光偏向器の縦断面図である。
３２……ロータマグネツト、３３……コイル部
、３４……中空回転体、３４ａ……フランジ、３
５……固定軸、３５ａ，３５ｂ……動圧軸受、３
６，３７，３８……マグネツト。
FIG. 1 is a longitudinal sectional view of an air magnetic bearing type optical deflector according to one embodiment of the present invention, FIG. 2 is a longitudinal sectional view of an air magnetic bearing type optical deflector according to another embodiment, and FIG. 3 a.
, b are diagrams showing the state of centrifugal expansion in each case of the conventional example and the present invention, and FIG. 4 is a longitudinal sectional view of the air magnetic bearing type optical deflector according to the conventional example. 32... Rotor magnet, 33... Coil portion, 34... Hollow rotating body, 34a... Flange, 3
5...Fixed shaft, 35a, 35b...Dynamic pressure bearing, 3
6, 37, 38...Magnet.
Claims (1)
動圧軸受部を持つ固定軸と、中空回転体、固定軸
の上端部とケース上蓋に設けたマグネツトで構成
されるスラスト磁気軸受と、中空回転体を回転さ
せる回転手段を有する空気磁気軸受型光偏向器に
おいて、前記フランジを上下２つの前記動圧軸受
部の中央に位置するように前記中空回転体の外周
部に形成したことを特徴とする空気磁気軸受型光
偏向器。 A hollow rotating body with a flange on the outer periphery, a fixed shaft with two dynamic pressure bearings, a thrust magnetic bearing consisting of a hollow rotating body, a magnet provided at the upper end of the fixed shaft and the top of the case, and a hollow rotating body. An air magnetic bearing type optical deflector having a rotation means for rotating the body, characterized in that the flange is formed on the outer periphery of the hollow rotating body so as to be located at the center of the two upper and lower dynamic pressure bearing parts. Air magnetic bearing type optical deflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988067467U JPH01172017U (en) | 1988-05-24 | 1988-05-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988067467U JPH01172017U (en) | 1988-05-24 | 1988-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01172017U true JPH01172017U (en) | 1989-12-06 |
Family
ID=31292837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988067467U Pending JPH01172017U (en) | 1988-05-24 | 1988-05-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172017U (en) |
-
1988
- 1988-05-24 JP JP1988067467U patent/JPH01172017U/ja active Pending