JP4330961B2 - 動圧軸受装置 - Google Patents
動圧軸受装置 Download PDFInfo
- Publication number
- JP4330961B2 JP4330961B2 JP2003323092A JP2003323092A JP4330961B2 JP 4330961 B2 JP4330961 B2 JP 4330961B2 JP 2003323092 A JP2003323092 A JP 2003323092A JP 2003323092 A JP2003323092 A JP 2003323092A JP 4330961 B2 JP4330961 B2 JP 4330961B2
- Authority
- JP
- Japan
- Prior art keywords
- housing
- shaft member
- bearing
- dynamic pressure
- motor
- 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.)
- Expired - Fee Related
Links
Landscapes
- Mounting Of Bearings Or Others (AREA)
- Rotational Drive Of Disk (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Sliding-Contact Bearings (AREA)
Description
1a 動圧軸受装置
2 軸部材
2c フランジ部
3 ディスクハブ
4 モータステータ
5 モータロータ
6 軸受スリーブ
6d1 動圧溝
8 ベース部材
8a ハウジング
8a1 動圧溝
8b ブラケット
11a 動圧軸受装置
R1、R2 ラジアル軸受部
T1、T2、T11 スラスト軸受部
Claims (2)
- ハウジングと、ハウジングの内部に固定された軸受スリーブと、軸受スリーブの内周に挿通され、軸受スリーブに対して相対回転する軸部材とを具備し、軸部材の回転時に、軸受スリーブが、軸受スリーブの内周面と軸部材の外周面との間のラジアル軸受隙間に生じる潤滑油の動圧作用によって軸部材をラジアル方向に非接触に支持するものにおいて、
ハウジングの底部の内底面に動圧溝が成形され、
軸部材はフランジ部を有するもので、ハウジングは側部と底部とを一体に有する樹脂製であり、フランジ部の端面とハウジングの底部の内底面との間にスラスト軸受隙間が形成され、このスラスト軸受隙間に生じる潤滑油の動圧作用で軸部材をスラスト方向に非接触に支持し、
ハウジングの外周に設けられ、モータステータの取り付け部を有する樹脂製のブラケットをさらに具備し、ハウジングとブラケットとを動圧溝およびモータステータの取り付け部を含めて一体に型成形したことを特徴とする動圧軸受装置。 - 請求項1に記載した動圧軸受装置と、モータロータと、モータロータとの間で励磁力を生じるモータステータとを有することを特徴とするモータ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003323092A JP4330961B2 (ja) | 2003-09-16 | 2003-09-16 | 動圧軸受装置 |
US10/843,672 US7267484B2 (en) | 2003-05-13 | 2004-05-12 | Fluid bearing device |
US11/727,227 US7399121B2 (en) | 2003-05-13 | 2007-03-26 | Fluid bearing device |
US11/727,226 US7448804B2 (en) | 2003-05-13 | 2007-03-26 | Fluid bearing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003323092A JP4330961B2 (ja) | 2003-09-16 | 2003-09-16 | 動圧軸受装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005090582A JP2005090582A (ja) | 2005-04-07 |
JP4330961B2 true JP4330961B2 (ja) | 2009-09-16 |
Family
ID=34454264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003323092A Expired - Fee Related JP4330961B2 (ja) | 2003-05-13 | 2003-09-16 | 動圧軸受装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4330961B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006311709A (ja) * | 2005-04-28 | 2006-11-09 | Nippon Densan Corp | スリーブ、スリーブユニットおよびモータ |
JP4794907B2 (ja) * | 2005-05-24 | 2011-10-19 | Ntn株式会社 | 流体軸受装置およびこれを備えたモータ |
JP5726687B2 (ja) * | 2011-09-12 | 2015-06-03 | Ntn株式会社 | 流体動圧軸受装置 |
-
2003
- 2003-09-16 JP JP2003323092A patent/JP4330961B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2005090582A (ja) | 2005-04-07 |
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