JP2002155940A5 - - Google Patents

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Publication number
JP2002155940A5
JP2002155940A5 JP2000351033A JP2000351033A JP2002155940A5 JP 2002155940 A5 JP2002155940 A5 JP 2002155940A5 JP 2000351033 A JP2000351033 A JP 2000351033A JP 2000351033 A JP2000351033 A JP 2000351033A JP 2002155940 A5 JP2002155940 A5 JP 2002155940A5
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JP
Japan
Prior art keywords
housing
annular recess
flange
bearing device
shaft
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
JP2000351033A
Other languages
Japanese (ja)
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JP2002155940A (en
JP3978999B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2000351033A priority Critical patent/JP3978999B2/en
Priority claimed from JP2000351033A external-priority patent/JP3978999B2/en
Publication of JP2002155940A publication Critical patent/JP2002155940A/en
Publication of JP2002155940A5 publication Critical patent/JP2002155940A5/ja
Application granted granted Critical
Publication of JP3978999B2 publication Critical patent/JP3978999B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【０００６】
【課題を解決するための手段】
上記課題を解決するための手段として、請求項１の発明は、相対回転するハウジングとこのハウジングの軸方向貫通穴に所定間隙を隔てて挿通される軸とを備え、この軸に形成されたフランジがハウジングの貫通穴内径面に形成された環状凹部に所定間隙を隔てて嵌入されているとともに、上記ハウジングと軸間に潤滑流体が封入され、上記フランジの上下面と上記環状凹部のフランジ上下面に対向する面との間にスラスト動圧発生部が設けられた動圧軸受装置において、上記軸のフランジ上面側に対向する上記ハウジング部分に、ハウジングの内径面から環状凹部の底部に開口する連通路が形成されたことを特徴とする。[0006]
[Means for Solving the Problems]
As a means for solving the above problems, the invention of claim 1, and a shaft to be inserted at a predetermined gap with the housing to rotate relative to the axial through bore of the housing was made form this axis with a flange is fitted at a predetermined gap in an annular recess formed in the through-hole inner surface of the housing, the lubricating fluid is sealed between upper Symbol housing and the shaft, the upper and lower surface and the annular recess of the flange flange in the dynamic pressure bearing device thrust dynamic pressure generating portion is provided between the surface facing the upper and lower surfaces, to the housing portion facing the flange upper side of the shaft, the bottom of the annular recess from the inner diameter surface of the housing An open communication passage is formed.

【０００８】
さらにまた、請求項３の発明においては、上記連通路は、上部分割ハウジングの内径面から外径部側に形成された径方向穴と、上部分割ハウジングの外径部に形成され上記径方向穴と交叉しかつ環状凹部の底部内に開口する切除部とから形成されていることを特徴とする。[0008]
Furthermore, in the invention of claim 3, said communication passage includes a radial bore formed in the outer diameter side from the inner diameter surface of the upper housing segment, the radially formed on the outer diameter portion of the upper housing segment And a cutout portion that intersects the hole and opens into the bottom of the annular recess.

Claims (2)

相対回転するハウジングとこのハウジングの軸方向貫通穴に所定間隙を隔てて挿通される軸とを備え、この軸に形成されたフランジがハウジングの貫通穴内径面に形成された環状凹部に所定間隙を隔てて嵌入されているとともに、上記ハウジングと軸間に潤滑流体が封入され、上記フランジの上下面と上記環状凹部のフランジ上下面に対向する面との間にスラスト動圧発生部が設けられた動圧軸受装置において、上記軸のフランジ上面側に対向する上記ハウジング部分に、ハウジングの内径面から環状凹部の底部に開口する連通路が形成されたことを特徴とする動圧軸受装置。Housing and a shaft to be inserted at a predetermined gap in the axial direction through hole of the housing, a predetermined gap flange made form this axis is the annular recess formed in the through-hole inner surface of the housing to rotate relative together is fitted at a, the lubricating fluid sealed between upper Symbol housing and the shaft, the thrust dynamic pressure generating portion between the surface facing the upper and lower surfaces and the flange top and bottom surfaces of the annular recess of the flange is provided in the dynamic pressure bearing device that is, to the housing portion facing the flange upper side of the shaft, the dynamic pressure bearing device, wherein a communication passage which opens from the inner diameter surface of the housing to the bottom of the annular recess is formed . 上記連通路は、上部分割ハウジングの内径面から外径部側に形成された径方向穴と、上部分割ハウジングの外径部に形成され上記径方向穴と交叉しかつ環状凹部の底部内に開口する切除部とから形成されていることを特徴とする請求項２に記載の動圧軸受装置。It said communication passage includes a radial bore formed in the outer diameter side from the inner diameter surface of the upper housing segment, formed on an outer diameter portion of the upper housing segment cross with the radial holes and into the bottom of the annular recess The hydrodynamic bearing device according to claim 2, wherein the hydrodynamic bearing device is formed from a cutout portion that opens.
JP2000351033A 2000-11-17 2000-11-17 Hydrodynamic bearing device Expired - Fee Related JP3978999B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000351033A JP3978999B2 (en) 2000-11-17 2000-11-17 Hydrodynamic bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000351033A JP3978999B2 (en) 2000-11-17 2000-11-17 Hydrodynamic bearing device

Publications (3)

Publication Number Publication Date
JP2002155940A JP2002155940A (en) 2002-05-31
JP2002155940A5 true JP2002155940A5 (en) 2004-11-11
JP3978999B2 JP3978999B2 (en) 2007-09-19

Family

ID=18824158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000351033A Expired - Fee Related JP3978999B2 (en) 2000-11-17 2000-11-17 Hydrodynamic bearing device

Country Status (1)

Country Link
JP (1) JP3978999B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4473716B2 (en) 2004-12-01 2010-06-02 ミネベア株式会社 Fluid dynamic bearing device, spindle motor provided with the fluid dynamic bearing device, and recording disk drive device
KR101185299B1 (en) 2005-06-27 2012-09-21 엘지전자 주식회사 Thrust-plate and scroll compressor having the same

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