JPH0326826U - - Google Patents

Info

Publication number
JPH0326826U
JPH0326826U JP1989087616U JP8761689U JPH0326826U JP H0326826 U JPH0326826 U JP H0326826U JP 1989087616 U JP1989087616 U JP 1989087616U JP 8761689 U JP8761689 U JP 8761689U JP H0326826 U JPH0326826 U JP H0326826U
Authority
JP
Japan
Prior art keywords
sleeve
shaft
magnet
groove
hydrodynamic bearing
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
JP1989087616U
Other languages
Japanese (ja)
Other versions
JP2521190Y2 (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 JP1989087616U priority Critical patent/JP2521190Y2/en
Publication of JPH0326826U publication Critical patent/JPH0326826U/ja
Application granted granted Critical
Publication of JP2521190Y2 publication Critical patent/JP2521190Y2/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
    • 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

  • Sliding-Contact Bearings (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Description

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

第１図ａ，ｂはそれぞれ本考案の一実施例に係
る動圧軸受の平面図および断面図、第２図は小溝
の加工方法を説明する図、第３図は他の実施例に
かかる小溝を示した図、第４図は従来の動圧軸受
の断面図である。 １，１１……スリーブ、１ａ，１１ａ……スリ
ーブの底部、３……軸、６……内側磁石、７……
外側磁石、８，９，１８……スルーホール、２０
，２０′……小溝、２１……球体。 Figures 1a and b are a plan view and a cross-sectional view of a hydrodynamic bearing according to an embodiment of the present invention, Figure 2 is a diagram explaining a method of machining small grooves, and Figure 3 is a diagram showing a small groove according to another embodiment. FIG. 4 is a sectional view of a conventional hydrodynamic bearing. 1, 11... Sleeve, 1a, 11a... Bottom of sleeve, 3... Shaft, 6... Inner magnet, 7...
Outer magnet, 8, 9, 18...Through hole, 20
, 20'...small groove, 21... sphere.

Claims (1)

【実用新案登録請求の範囲】 (1) 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
、上記軸の端面とスリーブの内底面とのそれぞれ
磁石を同極を向かい合わせて設置し、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
、 上記スリーブの底部に設けたスルーホールには
、上記スリーブの外部を上記磁石のスルーホール
に連通する溝が壁面に設けられると共に、上記溝
と上記磁石のスルーホールとの連通部が設けられ
るように上記溝を除く部分に栓体が嵌合されてい
ることを特徴とする動圧軸受。 (2) 上記栓体が球体である請求項１に記載の動
圧軸受。[Claims for Utility Model Registration] (1) A part 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 so that the shaft and the sleeve can be placed relative to each other. The shaft is supported in the radial direction by generating dynamic pressure in the fluid between the shaft and the sleeve by rotation, while the magnets on the end surface of the shaft and the inner bottom surface of the sleeve are installed with the same polarity facing each other. 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 further penetrates in the axial direction through the bottom of the sleeve and the magnet on the inner bottom surface of the sleeve, respectively. In the hydrodynamic bearing, the through hole provided at the bottom of the sleeve is provided with a groove on the wall surface that communicates the outside of the sleeve with the through hole of the magnet. A hydrodynamic bearing characterized in that a plug is fitted in a portion other than the groove so as to provide a communication portion with the through hole of the magnet. (2) The hydrodynamic bearing according to claim 1, wherein the plug body is spherical.
JP1989087616U 1989-07-26 1989-07-26 Hydrodynamic bearing Expired - Lifetime JP2521190Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989087616U JP2521190Y2 (en) 1989-07-26 1989-07-26 Hydrodynamic bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989087616U JP2521190Y2 (en) 1989-07-26 1989-07-26 Hydrodynamic bearing

Publications (2)

Publication Number Publication Date
JPH0326826U true JPH0326826U (en) 1991-03-19
JP2521190Y2 JP2521190Y2 (en) 1996-12-25

Family

ID=31637260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989087616U Expired - Lifetime JP2521190Y2 (en) 1989-07-26 1989-07-26 Hydrodynamic bearing

Country Status (1)

Country Link
JP (1) JP2521190Y2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6314218U (en) * 1986-07-15 1988-01-29
JPS63270915A (en) * 1987-04-24 1988-11-08 Nippon Seiko Kk Bearing device and its manufacturing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6314218U (en) * 1986-07-15 1988-01-29
JPS63270915A (en) * 1987-04-24 1988-11-08 Nippon Seiko Kk Bearing device and its manufacturing method

Also Published As

Publication number Publication date
JP2521190Y2 (en) 1996-12-25

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