JPH0398323U - - Google Patents

Info

Publication number
JPH0398323U
JPH0398323U JP1990007367U JP736790U JPH0398323U JP H0398323 U JPH0398323 U JP H0398323U JP 1990007367 U JP1990007367 U JP 1990007367U JP 736790 U JP736790 U JP 736790U JP H0398323 U JPH0398323 U JP H0398323U
Authority
JP
Japan
Prior art keywords
sleeve
shaft
magnet
inner bottom
hole
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
Application number
JP1990007367U
Other languages
Japanese (ja)
Other versions
JP2525045Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1990007367U priority Critical patent/JP2525045Y2/en
Publication of JPH0398323U publication Critical patent/JPH0398323U/ja
Application granted granted Critical
Publication of JP2525045Y2 publication Critical patent/JP2525045Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例に係る動圧軸受の断
面図、第２図は上記実施例のスリーブ内底部の拡
大断面図、第３図は他の実施例の要部を示した図
、第４図は従来の動圧軸受の断面図、第５図は従
来の動圧軸受の実施例のスリーブ内底部の拡大断
面図である。 １……スリーブ、１ａ……スリーブの底部、３
……軸、６……内側磁石、７……外側磁石、８，
９……スルーホール、１０……接着剤、１０ａ…
…はみだした接着剤、１８……孔。 Fig. 1 is a sectional view of a hydrodynamic bearing according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the inner bottom of the sleeve of the above embodiment, and Fig. 3 is a diagram showing the main parts of another embodiment. , FIG. 4 is a sectional view of a conventional hydrodynamic bearing, and FIG. 5 is an enlarged sectional view of the inner bottom of a sleeve of an embodiment of the conventional hydrodynamic bearing. 1... Sleeve, 1a... Bottom of sleeve, 3
...Axis, 6...Inner magnet, 7...Outer magnet, 8,
9...Through hole, 10...Adhesive, 10a...
...Adhesive sticking out, 18...hole.

Claims (1)

【実用新案登録請求の範囲】 有底スリーブに軸の一部を収納すると共に、上
記スリーブの内周面または軸の外周面の少なくと
も一方に溝を設けて上記軸とスリーブとの相対的
な回転により軸とスリーブとの間の流体に動圧を
発生させてラジアル方向に軸を支持する一方、上
記スリーブの内底面に磁石を接着すると共に、上
記磁石と、上記軸の端面に設けた磁石とを同極を
向かい合わせるように配置し、上記軸の端面の磁
石と上記スリーブの内底面の磁石の反発力でアキ
シアル方向に軸を支持するようにし、さらに上記
スリーブの底部と上記スリーブの内底面の磁石そ
れぞれに、軸方向に貫通すると共に互いに連通す
るスルーホールを設けた動圧軸受において、 上記スリーブの内底面、あるいは上記スリーブ
内底面に接着した磁石の接着面の少なくとも一方
の面に、上記スリーブに設けたスルーホールより
大径で、かつ上記スルーホールが連通する孔を設
けたことを特徴とする動圧軸受。[Claims for Utility Model Registration] A portion of the shaft is housed in a sleeve with a bottom, and a groove is provided on at least one of the inner circumferential surface of the sleeve or the outer circumferential surface of the shaft, thereby controlling the relative rotation between the shaft and the sleeve. While supporting the shaft in the radial direction by generating dynamic pressure in the fluid between the shaft and the sleeve, a magnet is bonded to the inner bottom surface of the sleeve, and the magnet and the magnet provided on the end surface of the shaft are connected to each other. are arranged with the same polarity facing each other, and the shaft is supported in the axial direction by the repulsive force of the magnet on the end surface of the shaft and the magnet on the inner bottom surface of the sleeve, and the bottom of the sleeve and the inner bottom surface of the sleeve In a dynamic pressure bearing in which each of the magnets is provided with a through hole that penetrates in the axial direction and communicates with each other, the inner bottom surface of the sleeve or at least one adhesive surface of the magnet bonded to the inner bottom surface of the sleeve has the above-mentioned A dynamic pressure bearing characterized by having a hole having a diameter larger than that of a through hole provided in a sleeve and through which the through hole communicates.
JP1990007367U 1990-01-29 1990-01-29 Hydrodynamic bearing Expired - Lifetime JP2525045Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990007367U JP2525045Y2 (en) 1990-01-29 1990-01-29 Hydrodynamic bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990007367U JP2525045Y2 (en) 1990-01-29 1990-01-29 Hydrodynamic bearing

Publications (2)

Publication Number Publication Date
JPH0398323U true JPH0398323U (en) 1991-10-11
JP2525045Y2 JP2525045Y2 (en) 1997-02-05

Family

ID=31511025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990007367U Expired - Lifetime JP2525045Y2 (en) 1990-01-29 1990-01-29 Hydrodynamic bearing

Country Status (1)

Country Link
JP (1) JP2525045Y2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59163219U (en) * 1983-04-19 1984-11-01 日本精工株式会社 hydrodynamic bearing
JPS6314218U (en) * 1986-07-15 1988-01-29

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59163219U (en) * 1983-04-19 1984-11-01 日本精工株式会社 hydrodynamic bearing
JPS6314218U (en) * 1986-07-15 1988-01-29

Also Published As

Publication number Publication date
JP2525045Y2 (en) 1997-02-05

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term