JPH0224123U - - Google Patents

Info

Publication number
JPH0224123U
JPH0224123U JP10245988U JP10245988U JPH0224123U JP H0224123 U JPH0224123 U JP H0224123U JP 10245988 U JP10245988 U JP 10245988U JP 10245988 U JP10245988 U JP 10245988U JP H0224123 U JPH0224123 U JP H0224123U
Authority
JP
Japan
Prior art keywords
dynamic pressure
groove
radial bearing
radial
axial direction
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
JP10245988U
Other languages
Japanese (ja)
Other versions
JPH0712734Y2 (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 JP10245988U priority Critical patent/JPH0712734Y2/en
Publication of JPH0224123U publication Critical patent/JPH0224123U/ja
Application granted granted Critical
Publication of JPH0712734Y2 publication Critical patent/JPH0712734Y2/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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/107—Grooves for generating pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Sliding-Contact Bearings (AREA)

Description

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

第１図は、この考案の実施例を示す縦断側面図
、第２図は従来構成を適用した流体軸受装置を示
す縦断側面図である。 図中、１０は支持部材、１２ａ，１２ｂはラジ
アル軸受面、２０は軸部材、２１ａ，２１ｂは動
圧発生用の溝、２２ａ，２２ｂはラジアル受面、
Ｐａ，Ｐｂは荷重作用点、ΔＲ，Δｒは半径方向
すきまである。 FIG. 1 is a longitudinal sectional side view showing an embodiment of this invention, and FIG. 2 is a longitudinal sectional side view showing a hydrodynamic bearing device to which a conventional configuration is applied. In the figure, 10 is a support member, 12a, 12b are radial bearing surfaces, 20 is a shaft member, 21a, 21b are grooves for generating dynamic pressure, 22a, 22b are radial bearing surfaces,
Pa and Pb are load application points, and ΔR and Δr are radial clearances.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 支持部材の内径面の軸方向に離れた２個所に形
成されたラジアル軸受面と、このラジアル軸受面
に対向する軸部材の外径面に形成されたラジアル
受面との少なくとも一方にヘリングボーン状の動
圧発生用の溝が設けられた流体軸受装置において
、前記２個所の各動圧発生用の溝は、動圧発生用
の溝の荷重作用点を中心として軸方向内側におけ
る溝の長さが軸方向外側における溝の長さよりも
長く、２個所のラジアル軸受面とラジアル受面と
の間の半径方向すきまは、前記荷重作用点を含む
動圧発生用の溝の軸方向外側の部分における半径
方向すきまが動圧発生用の溝の軸方向内側の端部
における半径方向すきまよりも小さく設定されて
いることを特徴とする流体軸受装置。 A herringbone-shaped radial bearing surface is formed on at least one of the radial bearing surfaces formed at two axially distant locations on the inner diameter surface of the support member, and the radial bearing surface formed on the outer diameter surface of the shaft member facing the radial bearing surface. In a hydrodynamic bearing device provided with grooves for generating dynamic pressure, each of the two grooves for generating dynamic pressure has a length on the inside in the axial direction centering on the load application point of the groove for generating dynamic pressure. is longer than the length of the groove on the outside in the axial direction, and the radial clearance between the two radial bearing surfaces is the length of the groove on the outside in the axial direction of the dynamic pressure generating groove including the load application point. A hydrodynamic bearing device characterized in that a radial clearance is set smaller than a radial clearance at an axially inner end of a groove for generating dynamic pressure.
JP10245988U 1988-08-02 1988-08-02 Hydrodynamic bearing device Expired - Lifetime JPH0712734Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10245988U JPH0712734Y2 (en) 1988-08-02 1988-08-02 Hydrodynamic bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10245988U JPH0712734Y2 (en) 1988-08-02 1988-08-02 Hydrodynamic bearing device

Publications (2)

Publication Number Publication Date
JPH0224123U true JPH0224123U (en) 1990-02-16
JPH0712734Y2 JPH0712734Y2 (en) 1995-03-29

Family

ID=31332389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10245988U Expired - Lifetime JPH0712734Y2 (en) 1988-08-02 1988-08-02 Hydrodynamic bearing device

Country Status (1)

Country Link
JP (1) JPH0712734Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005088143A1 (en) * 2004-03-16 2005-09-22 Ntn Corporation Hydrodynamic bearing device
JP2015158230A (en) * 2014-02-24 2015-09-03 ミネベア株式会社 Liquid bearing, motor, and polygon motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005088143A1 (en) * 2004-03-16 2005-09-22 Ntn Corporation Hydrodynamic bearing device
JP2015158230A (en) * 2014-02-24 2015-09-03 ミネベア株式会社 Liquid bearing, motor, and polygon motor

Also Published As

Publication number Publication date
JPH0712734Y2 (en) 1995-03-29

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