JPS6314218U - - Google Patents
Info
- Publication number
- JPS6314218U JPS6314218U JP1986108284U JP10828486U JPS6314218U JP S6314218 U JPS6314218 U JP S6314218U JP 1986108284 U JP1986108284 U JP 1986108284U JP 10828486 U JP10828486 U JP 10828486U JP S6314218 U JPS6314218 U JP S6314218U
- Authority
- JP
- Japan
- Prior art keywords
- rotating body
- bearing
- magnet
- dynamic pressure
- air
- 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 9
- 239000002131 composite material Substances 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
- F16C32/04—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
-
- 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
Description
第１図は、この考案の空気・磁気軸受型光偏向
器の一実施例について、その要部構成を示す縦断
面図、第２図は、この考案の空気・磁気軸受型光
偏向器の他の実施例について、その要部の部分構
成を示す縦断面図、第３図は、先に提案した空気
・磁気軸受型光偏向器の一例について、その要部
構成を示す縦断面図、第４図は、第３図に示した
先に提案した空気・磁気軸受型光偏向器について
、そのスラスト軸受部の動作原理を説明するため
の要部構成図、第５図は、先に提案した空気・磁
気軸受型光偏向器で使用するのに好適なロータマ
グネツト１６の一例を示す平面図、第６図は、同
じく先に提案した空気・磁気軸受型光偏向器で使
用するのに好適なコイル３４の配置例を示す図。
図面において、１１と１１′は中空の回転軸、
１２はミラー、１３はミラー固定用リング、１６
はロータマグネツト、１７は非磁性体のホルダー
ケース、１８はスラスト磁気軸受用の上部マグネ
ツト、１９はホルダーケース１７の固定用リング
、２１と２１′は固定軸、２２は非磁性体のホル
ダーケース、２３はスラスト磁気軸受用の下部マ
グネツト、３１はハウジング、３２と３２′は上
部ケース、３３はコイル基板、３４はコイル、３
５は磁性体のヨーク、４１はピボツトで、４１ａ
はそのネジ部、４２はテイルテイングパツド部。
FIG. 1 is a vertical cross-sectional view showing the configuration of essential parts of an embodiment of the air/magnetic bearing type optical deflector of this invention, and FIG. FIG. 3 is a vertical cross-sectional view showing the partial configuration of the main parts of an example of the above-proposed air/magnetic bearing type optical deflector, and FIG. The figure shows the main parts of the previously proposed air/magnetic bearing type optical deflector shown in Figure 3 to explain the operating principle of the thrust bearing part.・A plan view showing an example of the rotor magnet 16 suitable for use in a magnetic bearing type optical deflector, FIG. FIG. 3 is a diagram showing an example of arrangement of coils 34; In the drawing, 11 and 11' are hollow rotating shafts,
12 is a mirror, 13 is a mirror fixing ring, 16
is a rotor magnet, 17 is a non-magnetic holder case, 18 is an upper magnet for the thrust magnetic bearing, 19 is a fixing ring for the holder case 17, 21 and 21' are fixed shafts, 22 is a non-magnetic holder case , 23 is the lower magnet for the thrust magnetic bearing, 31 is the housing, 32 and 32' are the upper case, 33 is the coil board, 34 is the coil, 3
5 is a magnetic yoke, 41 is a pivot, and 41a
42 is the threaded part, and 42 is the tailing pad part.
Claims (1)
の内部に配置され、その外周に動圧空気軸受を構
成するヘリングボーン溝を有する固定軸と、該固
定軸を支持するとともに、前記固定軸および回転
体を収納し、かつ前記ミラーへの光路を形成する
窓部を有する筐体部とからなる光偏向器であつて
、前記中空状の回転体は、その上端に固定された
磁石と、該回転体の下方に固定され、円周方向に
異なる極性に着磁されたロータ磁石とを具備し、
前記固定軸は、その上端に前記回転体に固定され
た磁石と同極性で対向するように固定された磁石
を具備し、該固定軸の磁石と前記回転体の磁石と
の間で発生される反発力によりスラスト磁気軸受
が構成されており、かつ、前記回転体の下方に固
定されたロータ磁石に対向して、複数個のコイル
が前記筐体部の内部に設けられ、前記ロータ磁石
と前記コイルとにより、面対向型モータが構成さ
れている光偏向器において、前記回転体の下部外
周のヘリングボーン動圧軸受と共働してラジアル
方向の支持を行うラジアル軸受として、前記回転
体上部の反発式スラスト磁気軸受部の外周にテイ
ルテイングパツド動圧軸受を設けたことを特徴と
する空気・磁気軸受型光偏向器。 ２ 実用新案登録請求の範囲第１項記載の空気・
磁気軸受型光偏向器において、ラジアル軸受とし
て、回転体の上下両部の外周にテイルテイングパ
ツド動圧軸受を付加することにより、ヘリングボ
ーン動圧軸受とテイルテイングパツド動圧軸受と
からなる複合軸受を備えたことを特徴とする空気
・磁気軸受型偏向器。[Claims for Utility Model Registration] 1. A hollow rotating body having a mirror, a fixed shaft disposed inside the rotating body and having a herringbone groove constituting a hydrodynamic air bearing on its outer periphery, and the fixed shaft. an optical deflector comprising a casing that supports the fixed shaft and the rotating body and has a window that forms an optical path to the mirror, the hollow rotating body being comprising a magnet fixed to the upper end and a rotor magnet fixed below the rotating body and magnetized with different polarities in the circumferential direction,
The fixed shaft has a magnet fixed at its upper end so as to face the magnet fixed to the rotating body with the same polarity, and the magnet is generated between the magnet of the fixed shaft and the magnet of the rotating body. A thrust magnetic bearing is configured by the repulsive force, and a plurality of coils are provided inside the casing portion facing the rotor magnet fixed below the rotating body, and the rotor magnet and the In an optical deflector in which a surface facing type motor is constituted by a coil, a radial bearing on the upper part of the rotary body is used as a radial bearing that cooperates with a herringbone dynamic pressure bearing on the lower outer periphery of the rotary body to provide support in the radial direction. An air/magnetic bearing type optical deflector characterized by a tailing pad dynamic pressure bearing provided on the outer periphery of a repulsion type thrust magnetic bearing part. 2. Air/air as stated in paragraph 1 of the claims for utility model registration
In a magnetic bearing type optical deflector, tailing pad dynamic pressure bearings are added as radial bearings to the outer periphery of both the upper and lower parts of the rotating body, resulting in a herringbone dynamic pressure bearing and a tailing pad dynamic pressure bearing. An air/magnetic bearing type deflector featuring a composite bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986108284U JPS6314218U (en) | 1986-07-15 | 1986-07-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986108284U JPS6314218U (en) | 1986-07-15 | 1986-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6314218U true JPS6314218U (en) | 1988-01-29 |
Family
ID=30985337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986108284U Pending JPS6314218U (en) | 1986-07-15 | 1986-07-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6314218U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0326826U (en) * | 1989-07-26 | 1991-03-19 | ||
| JPH0398323U (en) * | 1990-01-29 | 1991-10-11 |
-
1986
- 1986-07-15 JP JP1986108284U patent/JPS6314218U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0326826U (en) * | 1989-07-26 | 1991-03-19 | ||
| JPH0398323U (en) * | 1990-01-29 | 1991-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69017248D1 (en) | Spindle motor. | |
| DE69003619D1 (en) | SPINDLE MOTOR. | |
| JP2001286116A (en) | Noncontact drive motor | |
| JPS61101467U (en) | ||
| JPS6314218U (en) | ||
| JPH03864Y2 (en) | ||
| JPH04103076A (en) | Spindle motor | |
| JPH03256547A (en) | Spindle motor | |
| JPH0614185Y2 (en) | Air magnetic bearing type optical deflector | |
| JPH0416014Y2 (en) | ||
| JPS62156911U (en) | ||
| JP2560507Y2 (en) | Dynamic pressure bearing device | |
| JPS6415823U (en) | ||
| JPH08130851A (en) | Axial gap motor | |
| JPH02105269U (en) | ||
| JPH0560135A (en) | Sealed fluid bearing motor | |
| JPS6381659U (en) | ||
| JPS62182070U (en) | ||
| JPH01146781U (en) | ||
| JPS62154413U (en) | ||
| JPS62151518U (en) | ||
| JPS6388062U (en) | ||
| JPH0431112U (en) | ||
| JPS62191350U (en) | ||
| JPS6370254U (en) |