JPH0318656U - - Google Patents
Info
- Publication number
- JPH0318656U JPH0318656U JP1989075521U JP7552189U JPH0318656U JP H0318656 U JPH0318656 U JP H0318656U JP 1989075521 U JP1989075521 U JP 1989075521U JP 7552189 U JP7552189 U JP 7552189U JP H0318656 U JPH0318656 U JP H0318656U
- Authority
- JP
- Japan
- Prior art keywords
- ring
- rotor
- shaped magnet
- motor
- thrust
- 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
- 238000010586 diagram Methods 0.000 description 7
- 230000003068 static effect Effects 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
- F16C32/04—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
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Sliding-Contact Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Description
第１図は本考案に係る一実施例のモータのラジ
アル・スラスト非接触軸受構造を示す図、第２図
は本実施例のリング状磁石部の詳細を示す図、第
３図は本実施例のリング状磁石間の距離と反発力
との関係を示す図、第４図、第５図は従来のスラ
スト方向軸受の構成を示す図、第６図は一般的な
スラスト軸受におけるロータ重量の変化に伴う浮
上量と回転数との関係を示す図、第７図は第５図
に示すスラスト軸受の起動時及び停止時の静摩擦
力の発生状況を説明するための図である。
図中、１，１１……回転ロータ、２，１２……
固定シヤフト、３，１０……上面蓋部、５，７，
１２ａ，１２ｂ……ラジアル動圧溝、６……スラ
スト加圧溝、８，３０……基体、１３，１６……
フランジ、１４，１５……リング状磁石、１７…
…ワツシヤ、１８……ステータ、１９……回転用
磁石、２０……回転多面鏡である。
Fig. 1 is a diagram showing the radial thrust non-contact bearing structure of a motor according to an embodiment of the present invention, Fig. 2 is a diagram showing details of the ring-shaped magnet portion of this embodiment, and Fig. 3 is a diagram of this embodiment. Figures 4 and 5 are diagrams showing the configuration of conventional thrust direction bearings. Figure 6 is a diagram showing the change in rotor weight in a typical thrust bearing. FIG. 7 is a diagram illustrating the relationship between the flying height and the rotational speed associated with the rotation speed. FIG. 7 is a diagram for explaining the generation of static friction force when the thrust bearing shown in FIG. 5 starts and stops. In the figure, 1, 11... rotating rotor, 2, 12...
Fixed shaft, 3, 10...Top lid part, 5, 7,
12a, 12b... Radial dynamic pressure groove, 6... Thrust pressure groove, 8, 30... Base body, 13, 16...
Flange, 14, 15...Ring magnet, 17...
... washer, 18... stator, 19... rotating magnet, 20... rotating polygon mirror.
Claims (1)
が回転するモータのスラスト軸受構造であつて、 前記ロータの外周に固着された第１のリング状
磁石と、該第１のリング状磁石下部に所定間〓を
もつて固定的に前記第１のリング状磁石と磁力が
互いに反発するよう配設された第２のリング状磁
石とを備え、該第２のリング状磁石と前記第１の
リング状磁石との反発力により前記ロータ重量を
相対的に調整し、前記固定子と前記ロータとの作
用条件を同一としてロータをスラスト方向に浮上
させ固定軸とロータとのスラスト方向の接触を常
時無接触とすることを特徴とするモータのスラス
ト軸受構造。[Claims for Utility Model Registration] A thrust bearing structure for a motor in which a rotor rotates around a fixed shaft erected in a substantially vertical direction, comprising: a first ring-shaped magnet fixed to the outer periphery of the rotor; a second ring-shaped magnet fixedly disposed below the first ring-shaped magnet with a predetermined distance therebetween so that the magnetic forces of the first ring-shaped magnet and the magnetic force repel each other; The weight of the rotor is relatively adjusted by the repulsive force between the ring-shaped magnet and the first ring-shaped magnet, and the rotor is levitated in the thrust direction under the same working conditions of the stator and the rotor, and the fixed shaft and the rotor are A thrust bearing structure for a motor characterized in that there is always no contact in the thrust direction with the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989075521U JPH0318656U (en) | 1989-06-29 | 1989-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989075521U JPH0318656U (en) | 1989-06-29 | 1989-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0318656U true JPH0318656U (en) | 1991-02-25 |
Family
ID=31616168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989075521U Pending JPH0318656U (en) | 1989-06-29 | 1989-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0318656U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6223343A (en) * | 1985-07-19 | 1987-01-31 | Copal Co Ltd | Motor |
| JPS62131736A (en) * | 1985-12-03 | 1987-06-15 | Ntn Toyo Bearing Co Ltd | motor spindle |
-
1989
- 1989-06-29 JP JP1989075521U patent/JPH0318656U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6223343A (en) * | 1985-07-19 | 1987-01-31 | Copal Co Ltd | Motor |
| JPS62131736A (en) * | 1985-12-03 | 1987-06-15 | Ntn Toyo Bearing Co Ltd | motor spindle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2071696T3 (en) | SPINDLE MOTOR. | |
| KR970006945A (en) | Shaft seal for hydraulic bearing unit | |
| WO2023138575A8 (en) | Radial-axial integrated magnetic bearing for energy storage device, and energy storage device | |
| JPH0318656U (en) | ||
| JP2949316B2 (en) | Spindle motor | |
| JPH0614185Y2 (en) | Air magnetic bearing type optical deflector | |
| JPS5916983Y2 (en) | Vertical player | |
| JPH0416014Y2 (en) | ||
| JPS60121509A (en) | Rotary drum device | |
| JPH0431112U (en) | ||
| JPH036467U (en) | ||
| KR100305428B1 (en) | A spindle motor having hemi-spherical bearing | |
| JPH0482430U (en) | ||
| JP2560507Y2 (en) | Dynamic pressure bearing device | |
| JPH0257253U (en) | ||
| JPH0757079B2 (en) | Spindle motor | |
| JPH10169646A (en) | Dynamic pressure bearing device | |
| JPH071528Y2 (en) | Dynamic bearing for fan motor | |
| JP2567917Y2 (en) | Motors using hydrodynamic bearings | |
| JPH0399219U (en) | ||
| JPH04134921U (en) | magnetic bearing | |
| JPH04114021U (en) | Dynamic air bearing optical deflector | |
| JPH06282932A (en) | Spindle motor | |
| JPH01171573U (en) | ||
| JPH0274620U (en) |