JP2006046430A - 動圧軸受装置 - Google Patents
動圧軸受装置 Download PDFInfo
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- JP2006046430A JP2006046430A JP2004226228A JP2004226228A JP2006046430A JP 2006046430 A JP2006046430 A JP 2006046430A JP 2004226228 A JP2004226228 A JP 2004226228A JP 2004226228 A JP2004226228 A JP 2004226228A JP 2006046430 A JP2006046430 A JP 2006046430A
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- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
- F16C17/102—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure
- F16C17/107—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure with at least one surface for radial load and at least one surface for axial load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/107—Grooves for generating pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2370/00—Apparatus relating to physics, e.g. instruments
- F16C2370/12—Hard disk drives or the like
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sliding-Contact Bearings (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Rotational Drive Of Disk (AREA)
Abstract
【解決手段】 動圧軸受装置1の内部に充満させる潤滑油としてエステル系潤滑油を使用し、かつハウジング7を液晶ポリマー(LCP)をベースとする樹脂材料で形成した。
【選択図】図7
Description
また、上記ハードディスク等の記録ディスク駆動装置は比較的幅広い温度範囲で使用されるため、上記記録ディスク駆動装置のスピンドルモータに使用される動圧軸受装置には、低蒸発率及び低粘度性を有する潤滑流体が好適であり、例えばエステル系の潤滑油が使用される(例えば、特許文献2参照)。
[パウダー状液晶ポリマー(LCP)の製造方法]
攪拌装置、トルクメータ、窒素ガス導入管、温度計および還流冷却器を備えた反応器に、p−ヒドロキシ安息香酸 994.5g(7.2モル)、4,4’−ジヒドロキシビフェニル 446.9g(2.4モル)、テレフタル酸 299.0g(1.8モル)、イソフタル酸 99.7g(0.6モル)および無水酢酸 1347.6g(13.2モル)を仕込んだ。反応器内を十分に窒素ガスで置換した後、窒素ガス気流下で30分かけて150℃まで昇温し、温度を保持して3時間還流させた。その後、留出する副生酢酸、未反応の無水酢酸を留去しながら2時間50分かけて320℃まで昇温し、トルクの上昇が認められる時点を反応終了とみなし、内容物を取り出した。得られた固形分は室温まで冷却し、粗粉砕機で粉砕後、窒素雰囲気下、室温から250℃まで1時間かけて昇温し、250℃から280℃まで5時間かけて昇温し、280℃で3時間保持し、固相で重合反応を進めた。これにより、流動開始温度が327℃のパウダー状液晶ポリマー(LCP)が得られた。
2、12、22 軸部
3 回転部材
4 ステータコイル
5 ロータマグネット
6 モータブラケット
7、17、27 ハウジング
7a、17a、27a 側部
7a1 上側端面
7a11 動圧溝
7b、17b、27b 底部
8、18、28 軸受スリーブ
8a1、8a2 動圧溝
8c、18c、28c 下側端面
9 ハブ部
9a 円盤部
9a1 下側端面
9b 筒状部
9c ディスク搭載面
9d 鍔部
10、20、30 フランジ部
10a、20a、30a 上側端面
13,23 シール部
17b1、27b1 内底面
R1、R2 ラジアル軸受部
T1、T2、T11、T12、T21、T22 スラスト軸受部
Claims (8)
- 底部を一体または別体に有するハウジングと、ハウジングの内周に固定された軸受スリーブと、軸受スリーブおよびハウジングに対して相対回転する回転部材とを備え、軸受隙間に生じる潤滑流体の動圧作用によって回転部材をラジアル方向およびスラスト方向に非接触支持する動圧軸受装置において、
潤滑流体がエステル系潤滑油であり、かつハウジングが、液晶ポリマー(LCP)をベースとする樹脂材料で形成されることを特徴とする動圧軸受装置。 - ハウジングを形成する樹脂材料に炭素繊維または無機繊維のうち少なくとも何れか一方を充填材として配合し、かつ充填材の総量が15〜50wt%である請求項1記載の動圧軸受装置。
- 充填材が、1wt%以上の炭素繊維を含む請求項2記載の動圧軸受装置。
- 無機繊維がケイ素(Si)を含まないものである請求項2記載の動圧軸受装置。
- 無機繊維がウィスカである請求項2記載の動圧軸受装置。
- 充填材に粉末状の導電化剤を配合した請求項2記載の動圧軸受装置。
- 粉末状の導電化剤が2〜10wt%のカーボンブラックである請求項6記載の動圧軸受装置。
- 充填材総量の上限値が35wt%であることを特徴とする請求項2記載の動圧軸受装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004226228A JP2006046430A (ja) | 2004-08-03 | 2004-08-03 | 動圧軸受装置 |
CNB2005800219234A CN100476224C (zh) | 2004-08-03 | 2005-08-02 | 流体动压轴承单元 |
PCT/JP2005/014076 WO2006013838A1 (ja) | 2004-08-03 | 2005-08-02 | 動圧軸受装置 |
KR1020077000937A KR20070059047A (ko) | 2004-08-03 | 2005-08-02 | 동압 베어링 장치 |
US11/629,167 US8177433B2 (en) | 2004-08-03 | 2005-08-02 | Hydrodynamic bearing unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004226228A JP2006046430A (ja) | 2004-08-03 | 2004-08-03 | 動圧軸受装置 |
Publications (1)
Publication Number | Publication Date |
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JP2006046430A true JP2006046430A (ja) | 2006-02-16 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004226228A Pending JP2006046430A (ja) | 2004-08-03 | 2004-08-03 | 動圧軸受装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8177433B2 (ja) |
JP (1) | JP2006046430A (ja) |
KR (1) | KR20070059047A (ja) |
CN (1) | CN100476224C (ja) |
WO (1) | WO2006013838A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010152984A (ja) * | 2008-12-25 | 2010-07-08 | Alphana Technology Co Ltd | ディスク駆動装置 |
US8300353B2 (en) | 2009-11-19 | 2012-10-30 | Alphana Technology Co., Ltd. | Disk drive device having function of discharging static electricity |
WO2013005664A1 (ja) | 2011-07-01 | 2013-01-10 | Ntn株式会社 | 記録ディスク駆動装置およびその樹脂部品 |
JP2018080292A (ja) * | 2016-11-18 | 2018-05-24 | 東洋インキScホールディングス株式会社 | 樹脂組成物 |
WO2020031796A1 (ja) * | 2018-08-06 | 2020-02-13 | Jxtgエネルギー株式会社 | 潤滑方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5095115B2 (ja) * | 2006-03-27 | 2012-12-12 | Ntn株式会社 | 動圧軸受装置 |
JP4941156B2 (ja) * | 2007-07-30 | 2012-05-30 | 日本電産株式会社 | 流体動圧軸受装置、スピンドルモータ、およびディスク駆動装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05112723A (ja) * | 1991-10-22 | 1993-05-07 | Sutaaraito Kogyo Kk | 導電性摺動部材組成物 |
JP2002298407A (ja) * | 2001-03-28 | 2002-10-11 | Ntn Corp | 光学式ピックアップ |
JP2003314534A (ja) * | 2002-04-17 | 2003-11-06 | Sony Corp | 軸受けユニット、軸受けユニットを有するモータおよび電子機器 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6390681B1 (en) * | 1999-04-05 | 2002-05-21 | Ntn Corporation | Dynamic pressure bearing-unit |
JP3774080B2 (ja) | 1999-04-05 | 2006-05-10 | Ntn株式会社 | 動圧型軸受ユニット |
US7012768B2 (en) * | 2000-12-27 | 2006-03-14 | Ntn Corporation | Optical pick-up |
CN100335806C (zh) * | 2001-09-21 | 2007-09-05 | 索尼公司 | 轴承装置及利用该轴承装置的马达 |
JP3943381B2 (ja) | 2001-12-05 | 2007-07-11 | 日本電産株式会社 | 軸受装置及びこれを備えたモータ |
KR100968163B1 (ko) * | 2002-04-23 | 2010-07-06 | 엔티엔 가부시키가이샤 | 유체 베어링 장치 |
JP2005003042A (ja) * | 2003-06-10 | 2005-01-06 | Ntn Corp | 動圧軸受装置 |
JP4689283B2 (ja) | 2004-03-30 | 2011-05-25 | Ntn株式会社 | 動圧軸受装置 |
WO2005098251A1 (ja) | 2004-03-30 | 2005-10-20 | Ntn Corporation | 動圧軸受装置 |
-
2004
- 2004-08-03 JP JP2004226228A patent/JP2006046430A/ja active Pending
-
2005
- 2005-08-02 KR KR1020077000937A patent/KR20070059047A/ko active Search and Examination
- 2005-08-02 CN CNB2005800219234A patent/CN100476224C/zh active Active
- 2005-08-02 US US11/629,167 patent/US8177433B2/en not_active Expired - Fee Related
- 2005-08-02 WO PCT/JP2005/014076 patent/WO2006013838A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05112723A (ja) * | 1991-10-22 | 1993-05-07 | Sutaaraito Kogyo Kk | 導電性摺動部材組成物 |
JP2002298407A (ja) * | 2001-03-28 | 2002-10-11 | Ntn Corp | 光学式ピックアップ |
JP2003314534A (ja) * | 2002-04-17 | 2003-11-06 | Sony Corp | 軸受けユニット、軸受けユニットを有するモータおよび電子機器 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010152984A (ja) * | 2008-12-25 | 2010-07-08 | Alphana Technology Co Ltd | ディスク駆動装置 |
US8300353B2 (en) | 2009-11-19 | 2012-10-30 | Alphana Technology Co., Ltd. | Disk drive device having function of discharging static electricity |
WO2013005664A1 (ja) | 2011-07-01 | 2013-01-10 | Ntn株式会社 | 記録ディスク駆動装置およびその樹脂部品 |
US9361918B2 (en) | 2011-07-01 | 2016-06-07 | Ntn Corporation | Memory disk drive device and resin component therefor |
JP2018080292A (ja) * | 2016-11-18 | 2018-05-24 | 東洋インキScホールディングス株式会社 | 樹脂組成物 |
WO2020031796A1 (ja) * | 2018-08-06 | 2020-02-13 | Jxtgエネルギー株式会社 | 潤滑方法 |
JPWO2020031796A1 (ja) * | 2018-08-06 | 2021-08-12 | Eneos株式会社 | 潤滑方法 |
US11702608B2 (en) | 2018-08-06 | 2023-07-18 | Eneos Corporation | Lubrication method |
JP7356426B2 (ja) | 2018-08-06 | 2023-10-04 | Eneos株式会社 | 潤滑方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1977113A (zh) | 2007-06-06 |
US8177433B2 (en) | 2012-05-15 |
CN100476224C (zh) | 2009-04-08 |
WO2006013838A1 (ja) | 2006-02-09 |
KR20070059047A (ko) | 2007-06-11 |
US20090034888A1 (en) | 2009-02-05 |
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