JP2014001781A - 流体動圧軸受装置及びこれを備えるモータ - Google Patents
流体動圧軸受装置及びこれを備えるモータ Download PDFInfo
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- JP2014001781A JP2014001781A JP2012136834A JP2012136834A JP2014001781A JP 2014001781 A JP2014001781 A JP 2014001781A JP 2012136834 A JP2012136834 A JP 2012136834A JP 2012136834 A JP2012136834 A JP 2012136834A JP 2014001781 A JP2014001781 A JP 2014001781A
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- 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
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- 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
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- 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
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/02—Sliding-contact bearings
- F16C25/04—Sliding-contact bearings self-adjusting
- F16C25/045—Sliding-contact bearings self-adjusting with magnetic means to preload the bearing
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- 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/064—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
- F16C32/0651—Details of the bearing area per se
- F16C32/0659—Details of the bearing area per se of pockets or grooves
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- 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
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- 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
- F16C33/72—Sealings
- F16C33/74—Sealings of sliding-contact bearings
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- 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
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- 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
- F16C2360/00—Engines or pumps
- F16C2360/46—Fans, e.g. ventilators
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- 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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- 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
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
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- 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
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
- F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
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- 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
- F16C33/1085—Channels or passages to recirculate the liquid in the bearing
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- 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
- F16C43/00—Assembling bearings
- F16C43/02—Assembling sliding-contact bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Power Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Sealing Of Bearings (AREA)
Abstract
【解決手段】多孔質材料で形成された回転側の軸受部材22と、有底筒状をなし、軸受部材22を内周に収容した静止側のハウジング7と、軸受部材22の上端面22bと対向配置され、軸受部材22の上側を、シール隙間Sを介して大気に開放するシール部材9と、軸受部材22の外周面22aとハウジング7の内周面7a2との間に形成されるラジアル軸受隙間と、軸受部材22の下端面22cとハウジング7の内底面7b1との間に形成されるスラスト軸受隙間とを備え、ラジアル軸受隙間及びスラスト軸受隙間が潤滑油11で満たされ、両軸受隙間に形成される油膜で軸受部材22がラジアル方向及びスラスト方向に支持される流体動圧軸受装置1である。軸受部材22の上端面22bと、これに対向するシール部材9の下端面9bとの間に、空気を含む軸方向隙間10を介在させた。
【選択図】図2
Description
2 回転体
3 ロータ(回転部材)
4 ロータマグネット
5 ステータコイル
6 モータベース(保持部材)
7 ハウジング
7a 側部
7b 底部
7b1 内底面
8 連通路
9 シール部材
10 軸方向隙間
11 潤滑油
12 押し込み部
13 溝部
21 軸部材
22 軸受部材
22b 上端面(軸方向他方側の端面)
22c 下端面(軸方向一方側の端面)
A、A1、A2 ラジアル動圧発生部
B スラスト動圧発生部
S シール隙間
R、R1、R2 ラジアル軸受部
T スラスト軸受部
Claims (10)
- 多孔質材料で形成され、軸方向両側に端面を有する回転側の軸受部材と、軸方向一方側が閉塞された有底筒状をなし、軸受部材を内周に収容した静止側のハウジングと、軸受部材の軸方向他方側の端面と対向配置され、軸受部材の軸方向他方側を、シール隙間を介して大気に開放するシール部材と、軸受部材の外周面とハウジングの内周面との間に形成されるラジアル軸受隙間と、軸受部材の軸方向一方側の端面とハウジングの内底面との間に形成されるスラスト軸受隙間とを備え、ラジアル軸受隙間及びスラスト軸受隙間が潤滑油で満たされ、ラジアル軸受隙間及びスラスト軸受隙間に形成される油膜で軸受部材がラジアル方向及びスラスト方向にそれぞれ支持される流体動圧軸受装置において、
軸受部材の軸方向他方側の端面と、これに対向するシール部材の端面との間に、空気を含む軸方向隙間を介在させたことを特徴とする流体動圧軸受装置。 - 軸受部材に、軸受部材を軸方向一方側に押し付ける外力を作用させる請求項1に記載の流体動圧軸受装置。
- 軸受部材の回転時、軸方向隙間内の潤滑油をシール隙間から径方向に離反する方向に押し込む押し込み部をさらに有する請求項1又は2に記載の流体動圧軸受装置。
- 押し込み部を、軸受部材の軸方向他方側の端面に形成した複数の溝部で構成した請求項3に記載の流体動圧軸受装置。
- 各溝部の溝幅を、シール隙間から径方向に離反する方向に向けて漸減させた請求項4に記載の流体動圧軸受装置。
- 各溝部が、溝底側に向けて溝幅を漸減させた断面形状を有する請求項4又は5に記載の流体動圧軸受装置。
- シール隙間が、軸受部材を外周に固定した軸部材の外周面と、ハウジングと一体又は別体に設けたシール部材の内周面との間に形成される請求項1〜6の何れか一項に記載の流体動圧軸受装置。
- ラジアル軸受隙間内の潤滑油に動圧作用を発生させる動圧発生部を有し、この動圧発生部を、ラジアル軸受隙間内の潤滑油をスラスト軸受隙間側に押し込む形状とした請求項1〜7の何れか一項に記載の流体動圧軸受装置。
- 軸受部材の軸方向両側の端面を連通させる連通路を有する請求項1〜8の何れか一項に記載の流体動圧軸受装置。
- 請求項1〜9の何れか一項に記載の流体動圧軸受装置を備えたモータ。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012136834A JP5951365B2 (ja) | 2012-06-18 | 2012-06-18 | 流体動圧軸受装置及びこれを備えるモータ |
CN201380031745.8A CN104411988B (zh) | 2012-06-18 | 2013-05-22 | 流体动压轴承装置以及具备该流体动压轴承装置的电动机 |
US14/405,224 US9353790B2 (en) | 2012-06-18 | 2013-05-22 | Fluid dynamic bearing device and motor with same |
KR1020147035130A KR102020251B1 (ko) | 2012-06-18 | 2013-05-22 | 유체 동압 베어링 장치 및 이것을 구비하는 모터 |
EP13807559.3A EP2863077B1 (en) | 2012-06-18 | 2013-05-22 | Fluid dynamic bearing device and motor with same |
IN9840DEN2014 IN2014DN09840A (ja) | 2012-06-18 | 2013-05-22 | |
PCT/JP2013/064178 WO2013190942A1 (ja) | 2012-06-18 | 2013-05-22 | 流体動圧軸受装置及びこれを備えるモータ |
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JP2012136834A JP5951365B2 (ja) | 2012-06-18 | 2012-06-18 | 流体動圧軸受装置及びこれを備えるモータ |
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JP2014001781A true JP2014001781A (ja) | 2014-01-09 |
JP5951365B2 JP5951365B2 (ja) | 2016-07-13 |
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US (1) | US9353790B2 (ja) |
EP (1) | EP2863077B1 (ja) |
JP (1) | JP5951365B2 (ja) |
KR (1) | KR102020251B1 (ja) |
CN (1) | CN104411988B (ja) |
IN (1) | IN2014DN09840A (ja) |
WO (1) | WO2013190942A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2014148179A1 (ja) * | 2013-03-19 | 2014-09-25 | Ntn株式会社 | 流体動圧軸受装置およびこれを備えるモータ |
JP2016037977A (ja) * | 2014-08-05 | 2016-03-22 | Ntn株式会社 | 流体動圧軸受装置及びこれを備えるモータ |
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US8618706B2 (en) * | 2008-12-04 | 2013-12-31 | Seagate Technology Llc | Fluid pumping capillary seal for a fluid dynamic bearing |
JP6502068B2 (ja) * | 2014-11-20 | 2019-04-17 | Ntn株式会社 | 流体動圧軸受装置の製造方法 |
JP2017166575A (ja) * | 2016-03-16 | 2017-09-21 | Ntn株式会社 | 動圧軸受及びその製造方法 |
JP6762611B2 (ja) * | 2016-12-14 | 2020-09-30 | 東京パーツ工業株式会社 | 軸受装置及びブラシレスモータ |
JP6574826B2 (ja) * | 2017-11-10 | 2019-09-11 | 大同メタル工業株式会社 | 半割スラスト軸受、スラスト軸受、軸受装置および内燃機関 |
CN109660057A (zh) * | 2018-12-22 | 2019-04-19 | 泉州鑫鸿海机械设备有限公司 | 一种单向旋转永磁高速电机及其双向空气轴承 |
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KR20130021692A (ko) * | 2011-08-23 | 2013-03-06 | 삼성전기주식회사 | 유체 동압 베어링 어셈블리 및 이의 제조방법 |
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US20150323002A1 (en) * | 2014-05-08 | 2015-11-12 | Samsung Electro-Mechanics Co., Ltd. | Hydrodynamic bearing device, spindle motor having the same, and recording disk driving device |
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2012
- 2012-06-18 JP JP2012136834A patent/JP5951365B2/ja active Active
-
2013
- 2013-05-22 IN IN9840DEN2014 patent/IN2014DN09840A/en unknown
- 2013-05-22 WO PCT/JP2013/064178 patent/WO2013190942A1/ja active Application Filing
- 2013-05-22 KR KR1020147035130A patent/KR102020251B1/ko active IP Right Grant
- 2013-05-22 EP EP13807559.3A patent/EP2863077B1/en not_active Not-in-force
- 2013-05-22 CN CN201380031745.8A patent/CN104411988B/zh active Active
- 2013-05-22 US US14/405,224 patent/US9353790B2/en active Active
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JP2003336636A (ja) * | 2002-05-21 | 2003-11-28 | Ntn Corp | 動圧軸受装置 |
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WO2014148179A1 (ja) * | 2013-03-19 | 2014-09-25 | Ntn株式会社 | 流体動圧軸受装置およびこれを備えるモータ |
US9989091B2 (en) | 2013-03-19 | 2018-06-05 | Ntn Corporation | Fluid dynamic bearing device and motor provided with same |
JP2016037977A (ja) * | 2014-08-05 | 2016-03-22 | Ntn株式会社 | 流体動圧軸受装置及びこれを備えるモータ |
Also Published As
Publication number | Publication date |
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US20150147010A1 (en) | 2015-05-28 |
KR20150020567A (ko) | 2015-02-26 |
EP2863077B1 (en) | 2018-03-07 |
JP5951365B2 (ja) | 2016-07-13 |
IN2014DN09840A (ja) | 2015-08-07 |
CN104411988B (zh) | 2017-02-22 |
WO2013190942A1 (ja) | 2013-12-27 |
CN104411988A (zh) | 2015-03-11 |
EP2863077A4 (en) | 2016-03-16 |
US9353790B2 (en) | 2016-05-31 |
KR102020251B1 (ko) | 2019-09-10 |
EP2863077A1 (en) | 2015-04-22 |
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