JP2000291648A5 - - Google Patents

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Publication number
JP2000291648A5
JP2000291648A5 JP1999097919A JP9791999A JP2000291648A5 JP 2000291648 A5 JP2000291648 A5 JP 2000291648A5 JP 1999097919 A JP1999097919 A JP 1999097919A JP 9791999 A JP9791999 A JP 9791999A JP 2000291648 A5 JP2000291648 A5 JP 2000291648A5
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JP
Japan
Prior art keywords
bearing
thrust
unit according
shaft
flange portion
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
JP1999097919A
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Japanese (ja)
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JP2000291648A (en
JP3774080B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP09791999A priority Critical patent/JP3774080B2/en
Priority claimed from JP09791999A external-priority patent/JP3774080B2/en
Priority to US09/539,617 priority patent/US6390681B1/en
Priority to KR1020000017652A priority patent/KR100696238B1/en
Publication of JP2000291648A publication Critical patent/JP2000291648A/en
Publication of JP2000291648A5 publication Critical patent/JP2000291648A5/ja
Application granted granted Critical
Publication of JP3774080B2 publication Critical patent/JP3774080B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【０００７】
【課題を解決するための手段】
上記目的の達成のため、本発明にかかる動圧型軸受ユニットでは、軸およびフランジ部からなる軸部材と、軸部材をラジアル方向で支持するラジアル軸受部と、軸部材のフランジ部をスラスト方向で支持するスラスト軸受部とを有し、ラジアル軸受部およびスラスト軸受部がそれぞれ動圧作用で軸部材を非接触支持するものにおいて、軸とフランジ部を一体に構成した。軸部材の軸部およびフランジ部は、鍛造によって一体形成したり、あるいは溶接によって一体化することができる。 [0007]
[Means for Solving the Problems]
In order to achieve the above object, in the hydrodynamic bearing unit according to the present invention, a shaft member comprising a shaft and a flange portion, a radial bearing portion for supporting the shaft member in the radial direction, and a flange portion of the shaft member are supported in the thrust direction. The shaft and the flange portion are integrally formed in a device in which the radial bearing portion and the thrust bearing portion support the shaft member in a non-contact manner by dynamic pressure action. The shaft portion and the flange portion of the shaft member can be integrally formed by forging, or integrated by welding.

Claims (10)

軸およびフランジ部からなる軸部材と、軸部材をラジアル方向で支持するラジアル軸受部と、軸部材のフランジ部をスラスト方向で支持するスラスト軸受部とを有し、ラジアル軸受部およびスラスト軸受部がそれぞれ動圧作用で軸部材を非接触支持するものにおいて、
軸とフランジ部を一体に構成したことを特徴とする動圧型軸受ユニット。A radial bearing portion and a thrust bearing portion having a shaft member including a shaft and a flange portion, a radial bearing portion supporting the shaft member in a radial direction, and a thrust bearing portion supporting the flange portion of the shaft member in a thrust direction In each of the non-contact supporting of the shaft member by dynamic pressure action,
A dynamic pressure type bearing unit characterized in that a shaft and a flange portion are integrally formed. 軸部材の外周側に軸受部材を配置し、軸部材の外周面とこれに対向する軸受部材との間に上記ラジアル軸受部のラジアル軸受隙間を形成した請求項１記載の動圧型軸受ユニット。  The hydrodynamic bearing unit according to claim 1, wherein a bearing member is disposed on an outer peripheral side of the shaft member, and a radial bearing gap of the radial bearing portion is formed between the outer peripheral surface of the shaft member and the bearing member opposed thereto. スラスト軸受部が、フランジ部の両側に２つのスラスト軸受隙間を有するものである請求項２記載の動圧型軸受ユニット。  The hydrodynamic bearing unit according to claim 2, wherein the thrust bearing portion has two thrust bearing gaps on both sides of the flange portion. フランジ部の一方の端面と、これに対向する軸受部材とで上記スラスト軸受部の一方のスラスト軸受隙間を構成した請求項３記載の動圧型軸受ユニット。  4. A hydrodynamic bearing unit according to claim 3, wherein one thrust bearing gap of said thrust bearing portion is constituted by one end face of the flange portion and a bearing member opposed thereto. フランジ部の他方の端面に対向させてスラスト支持部を設け、このスラスト支持部とフランジ部の他方の端面とで上記スラスト軸受部の他方のスラスト軸受隙間を構成した請求項４記載の動圧型軸受ユニット。  The hydrodynamic bearing according to claim 4, wherein a thrust support portion is provided opposite to the other end face of the flange portion, and the other thrust bearing gap of the thrust bearing portion is constituted by the thrust support portion and the other end face of the flange portion. unit. スラスト軸受部の動圧溝を軸受部材に設けた請求項４記載の動圧型軸受ユニット。  5. The hydrodynamic bearing unit according to claim 4, wherein the hydrodynamic bearing of the thrust bearing portion is provided in the bearing member. スラスト軸受部の動圧溝をスラスト支持部に設けた請求項５記載の動圧型軸受ユニット。  The hydrodynamic bearing unit according to claim 5, wherein the hydrodynamic bearing of the thrust bearing portion is provided in the thrust support portion. 軸受部材の一端側をシール部材で密封した請求項２乃至７何れか記載の動圧型軸受ユニット。  The hydrodynamic bearing unit according to any one of claims 2 to 7, wherein one end side of the bearing member is sealed by a seal member. 軸部材の軸部およびフランジ部を、鍛造によって一体形成した請求項１記載の動圧型軸受ユニット。The hydrodynamic bearing unit according to claim 1, wherein the shaft portion and the flange portion of the shaft member are integrally formed by forging. 軸部材の軸部およびフランジ部を、溶接によって一体化した請求項１記載の動圧型軸受ユニット。The hydrodynamic bearing unit according to claim 1, wherein the shaft portion and the flange portion of the shaft member are integrated by welding.
JP09791999A 1999-04-05 1999-04-05 Hydrodynamic bearing unit Expired - Lifetime JP3774080B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP09791999A JP3774080B2 (en) 1999-04-05 1999-04-05 Hydrodynamic bearing unit
US09/539,617 US6390681B1 (en) 1999-04-05 2000-03-31 Dynamic pressure bearing-unit
KR1020000017652A KR100696238B1 (en) 1999-04-05 2000-04-04 Dynamic pressure bearing-unit and method for manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09791999A JP3774080B2 (en) 1999-04-05 1999-04-05 Hydrodynamic bearing unit

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2004219149A Division JP2004308918A (en) 2004-07-27 2004-07-27 Hydrodynamic bearing unit

Publications (3)

Publication Number Publication Date
JP2000291648A JP2000291648A (en) 2000-10-20
JP2000291648A5 true JP2000291648A5 (en) 2005-05-26
JP3774080B2 JP3774080B2 (en) 2006-05-10

Family

ID=14205117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09791999A Expired - Lifetime JP3774080B2 (en) 1999-04-05 1999-04-05 Hydrodynamic bearing unit

Country Status (1)

Country Link
JP (1) JP3774080B2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002181033A (en) * 2000-12-12 2002-06-26 Ntn Corp Dynamic pressure type bearing unit
GB2379335B (en) * 2001-08-29 2005-09-07 Sunonwealth Electr Mach Ind Co Supporting structure for a rotor
JP4236891B2 (en) * 2002-09-26 2009-03-11 Ｎｔｎ株式会社 Hydrodynamic bearing device
JP2005042838A (en) * 2003-07-23 2005-02-17 Ntn Corp Fluid bearing device
JP2005090653A (en) 2003-09-18 2005-04-07 Ntn Corp Fluid bearing device
US7798721B2 (en) 2004-03-30 2010-09-21 Ntn Corporation Fluid dynamic bearing device
JP4832736B2 (en) * 2004-07-28 2011-12-07 Ｎｔｎ株式会社 Hydrodynamic bearing unit
US20080309183A1 (en) 2004-08-03 2008-12-18 Ntn Corporation Dynamic Bearing Device
JP2006046430A (en) 2004-08-03 2006-02-16 Ntn Corp Dynamic pressure bearing device
JP4794907B2 (en) * 2005-05-24 2011-10-19 Ｎｔｎ株式会社 Hydrodynamic bearing device and motor provided with the same
JP5095115B2 (en) 2006-03-27 2012-12-12 Ｎｔｎ株式会社 Hydrodynamic bearing device
JP2007285414A (en) * 2006-04-17 2007-11-01 Ntn Corp Dynamic pressure bearing device
CN101779047B (en) 2007-08-20 2014-07-02 Ntn株式会社 Fluid bearing device
KR101148242B1 (en) * 2010-08-26 2012-07-03 삼성전기주식회사 Spindle Motor
TWI425153B (en) * 2011-08-12 2014-02-01 Topmag Technology Co Ltd High lubrication performance of the bearing components

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