JP4030517B2 - 動圧軸受装置 - Google Patents
動圧軸受装置 Download PDFInfo
- Publication number
- JP4030517B2 JP4030517B2 JP2004100032A JP2004100032A JP4030517B2 JP 4030517 B2 JP4030517 B2 JP 4030517B2 JP 2004100032 A JP2004100032 A JP 2004100032A JP 2004100032 A JP2004100032 A JP 2004100032A JP 4030517 B2 JP4030517 B2 JP 4030517B2
- Authority
- JP
- Japan
- Prior art keywords
- thrust
- thrust bearing
- bearing
- dynamic pressure
- inclined surface
- 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 - Lifetime
Links
- 238000005086 pumping Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 description 13
- 239000010687 lubricating oil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- -1 gunmetal Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Rotational Drive Of Disk (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Sliding-Contact Bearings (AREA)
Description
スラスト軸受隙間が、内径部を均一幅とすると共に、その外径側に、外径側ほどその軸方向幅を小さくした縮小部を有し、縮小部がスラスト軸受面に設けた傾斜面で形成され、前記動圧溝領域を傾斜面に設け、フランジ部と軸方向で対向する部材の端面のうち、傾斜面よりも内径側の領域を傾斜面の最内径部よりも凹ませて、この領域で前記スラスト軸受隙間の均一幅部分を形成し、動圧溝の溝深さを均一とし、スパイラル状の動圧溝のポンピング能力が縮小部の最外径側で最も大きくなっており、傾斜面の半径方向幅r、傾斜面の高さをhとして、h/r≦0.01に設定したことを特徴とするものである。
Jiasheng Zhu and Kyosuke Ono, 1999, "A Comparison Study on the Performance of Four Types of oil Lubricated Hydrodynamic Thrust Bearings for Hard Disk Spindles," Transactions of the ASME, Vol.121,JANUARY 1999, pp. 114-120
スラスト軸受部外径Do 6.5mm
スラスト軸受部内径Di 2.5mm
溝深さho 7μm
溝本数k 16
溝角度α 30deg
丘溝比γ 1
潤滑油粘度η 5.97mPa・S
但し、スラスト軸受隙間の最小幅Wminは0.05μmとした。
2 軸部材
2a 軸部
2b フランジ部
2b1 下端面
2b2 上端面(スラスト面)
3 ディスクハブ
4 モータステータ
5 モータロータ
7 ハウジング
7c 底部(スラストプレート)
7c1 内底面
8 軸受スリーブ
8a 内周面
8c 端面
10 シール部材
10a 内周面
11a スラスト軸受面
11b スラスト受け面
13a スラスト軸受面
13b スラスト受け面
15 縮小部
17 傾斜面
P 動圧溝領域
R1 第一ラジアル軸受部
R2 第二ラジアル軸受部
T1 第一スラスト軸受部
T2 第二スラスト軸受部
Claims (2)
- 軸部材のフランジ部と、これに軸方向で対向する部材とのうち、フランジ部と軸方向で対向する部材に形成され、複数のスパイラル状の動圧溝を配列した動圧溝領域を設けたスラスト軸受面と、フランジ部に設けられ、スラスト軸受面と軸方向で対向するスラスト受け面と、スラスト軸受面とスラスト受け面との間に形成され、回転側部材の回転時に流体の動圧作用で圧力を発生させて、この圧力で軸部材をスラスト方向に非接触支持するスラスト軸受隙間とを備えるものにおいて、
スラスト軸受隙間が、内径部を均一幅とすると共に、その外径側に、外径側ほどその軸方向幅を小さくした縮小部を有し、縮小部がスラスト軸受面に設けた傾斜面で形成され、前記動圧溝領域を傾斜面に設け、フランジ部と軸方向で対向する部材の端面のうち、傾斜面よりも内径側の領域を傾斜面の最内径部よりも凹ませて、この領域で前記スラスト軸受隙間の均一幅部分を形成し、動圧溝の溝深さを均一とし、スパイラル状の動圧溝のポンピング能力が縮小部の最外径側で最も大きくなっており、傾斜面の半径方向幅r、傾斜面の高さをhとして、h/r≦0.01に設定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、回転側部材に取り付けたモータロータと、固定側部材に取り付けたモータステータとを有するモータ。。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004100032A JP4030517B2 (ja) | 2004-03-30 | 2004-03-30 | 動圧軸受装置 |
DE112005000722T DE112005000722T5 (de) | 2004-03-30 | 2005-03-17 | Dynamische Lagervorrichtung |
US10/590,910 US8506167B2 (en) | 2004-03-30 | 2005-03-17 | Dynamic bearing device having a thrust bearing portion |
PCT/JP2005/004772 WO2005098250A1 (ja) | 2004-03-30 | 2005-03-17 | 動圧軸受装置 |
KR1020067020005A KR101244271B1 (ko) | 2004-03-30 | 2005-03-17 | 동압 베어링 장치 |
CN2005800103030A CN1938524B (zh) | 2004-03-30 | 2005-03-17 | 动力轴承装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004100032A JP4030517B2 (ja) | 2004-03-30 | 2004-03-30 | 動圧軸受装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005282771A JP2005282771A (ja) | 2005-10-13 |
JP4030517B2 true JP4030517B2 (ja) | 2008-01-09 |
Family
ID=35181390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004100032A Expired - Lifetime JP4030517B2 (ja) | 2004-03-30 | 2004-03-30 | 動圧軸受装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4030517B2 (ja) |
-
2004
- 2004-03-30 JP JP2004100032A patent/JP4030517B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2005282771A (ja) | 2005-10-13 |
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