JP2007309494A - 動圧軸受装置 - Google Patents
動圧軸受装置 Download PDFInfo
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- JP2007309494A JP2007309494A JP2006141874A JP2006141874A JP2007309494A JP 2007309494 A JP2007309494 A JP 2007309494A JP 2006141874 A JP2006141874 A JP 2006141874A JP 2006141874 A JP2006141874 A JP 2006141874A JP 2007309494 A JP2007309494 A JP 2007309494A
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- Prior art keywords
- dynamic pressure
- bearing
- radial bearing
- rotating member
- disk
- Prior art date
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- Sliding-Contact Bearings (AREA)
- Rotational Drive Of Disk (AREA)
Abstract
【解決手段】ハブ11に搭載されるディスクを含めた回転部材の総重量をP[N]とした場合、かかる総重量P[N]を、軸部2aの外径寸法d[mm]とラジアル軸受部R1、R2の有効軸受スパンY[mm]との積(d×Y)で除した値P/(d×Y)が0.02以上0.12以下となるよう、外径寸法dおよび有効軸受スパンYが定められる。ここで、有効軸受スパンYは、上側の平滑部A5の軸方向中央位置(円周方向線X1の位置)から、下側の平滑部B5の軸方向中央位置(円周方向線X2の位置)までの間の軸方向距離を指す。また、各ラジアル軸受部R1、R2を形成する一対の対向面間の直径隙間寸法Wd[μm]を、1.5×d以上2.5×d以下に設定する。
【選択図】図2
Description
2a、22 軸部
2a1、22a 外周面
3、23 回転部材
6 ディスク
A、B、C、D 動圧発生部
A1、A2、B1、B2、C1 動圧溝
d 外径寸法[mm]
P ディスクを含めた回転部材の総重量[N]
Y 有効軸受スパン[mm]
Wd ラジアル軸受部の直径隙間寸法[μm]
R1、R2、R11、R12 ラジアル軸受部
T1、T2、T11、T12 スラスト軸受部
S シール空間
Claims (2)
- 固定部材と、軸部を有する回転部材と、前記固定部材と前記回転部材との間に形成されるラジアル軸受部と、前記回転部材の回転に伴い、前記ラジアル軸受部に流体の動圧作用を生じる動圧発生部とを備え、前記回転部材にディスクが保持される動圧軸受装置において、
前記ディスクを含めた前記回転部材の総重量P[N]を、前記軸部の外径寸法d[mm]と前記ラジアル軸受部の有効軸受スパンY[mm]との積で除した値P/(d×Y)が0.02以上0.12以下で、
前記ラジアル軸受部を形成する一対の対向面間の直径隙間寸法Wd[μm]が1.5×d以上2.5×d以下であることを特徴とする動圧軸受装置。 - 請求項1記載の動圧軸受装置と、該動圧軸受装置の前記回転部材を回転駆動させる駆動部と、前記ディスクとを具備したディスク駆動装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006141874A JP4739114B2 (ja) | 2006-05-22 | 2006-05-22 | 動圧軸受装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006141874A JP4739114B2 (ja) | 2006-05-22 | 2006-05-22 | 動圧軸受装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007309494A true JP2007309494A (ja) | 2007-11-29 |
JP4739114B2 JP4739114B2 (ja) | 2011-08-03 |
Family
ID=38842533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006141874A Active JP4739114B2 (ja) | 2006-05-22 | 2006-05-22 | 動圧軸受装置 |
Country Status (1)
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JP (1) | JP4739114B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011163502A (ja) * | 2010-02-12 | 2011-08-25 | Alphana Technology Co Ltd | 回転機器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09182357A (ja) * | 1995-12-27 | 1997-07-11 | Toshiba Lighting & Technol Corp | 動圧軸受け構造のモータおよびモータ組込機器 |
JP2001069719A (ja) * | 1999-06-25 | 2001-03-16 | Toshiba Corp | 動圧軸受モータ |
JP2002310145A (ja) * | 2001-04-11 | 2002-10-23 | Daido Steel Co Ltd | 軸受機構、それを用いたハードディスク駆動機構及びポリゴンミラー駆動機構 |
JP2004166439A (ja) * | 2002-11-15 | 2004-06-10 | Nippon Densan Corp | スピンドルモータ及びディスクドライブ装置 |
-
2006
- 2006-05-22 JP JP2006141874A patent/JP4739114B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09182357A (ja) * | 1995-12-27 | 1997-07-11 | Toshiba Lighting & Technol Corp | 動圧軸受け構造のモータおよびモータ組込機器 |
JP2001069719A (ja) * | 1999-06-25 | 2001-03-16 | Toshiba Corp | 動圧軸受モータ |
JP2002310145A (ja) * | 2001-04-11 | 2002-10-23 | Daido Steel Co Ltd | 軸受機構、それを用いたハードディスク駆動機構及びポリゴンミラー駆動機構 |
JP2004166439A (ja) * | 2002-11-15 | 2004-06-10 | Nippon Densan Corp | スピンドルモータ及びディスクドライブ装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011163502A (ja) * | 2010-02-12 | 2011-08-25 | Alphana Technology Co Ltd | 回転機器 |
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