JP4302463B2 - 流体軸受装置及びその製造方法 - Google Patents
流体軸受装置及びその製造方法 Download PDFInfo
- Publication number
- JP4302463B2 JP4302463B2 JP2003294528A JP2003294528A JP4302463B2 JP 4302463 B2 JP4302463 B2 JP 4302463B2 JP 2003294528 A JP2003294528 A JP 2003294528A JP 2003294528 A JP2003294528 A JP 2003294528A JP 4302463 B2 JP4302463 B2 JP 4302463B2
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- Prior art keywords
- housing
- peripheral surface
- shaft member
- bearing
- gate
- 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
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- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 67
- 229920005989 resin Polymers 0.000 claims description 47
- 239000011347 resin Substances 0.000 claims description 47
- 238000000465 moulding Methods 0.000 claims description 31
- 239000010687 lubricating oil Substances 0.000 claims description 16
- 238000001746 injection moulding Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- 229920000106 Liquid crystal polymer Polymers 0.000 description 4
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000011231 conductive filler Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000005871 repellent Substances 0.000 description 4
- -1 for example Polymers 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004697 Polyetherimide Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 229920000491 Polyphenylsulfone Polymers 0.000 description 2
- 239000002134 carbon nanofiber Substances 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 229920006038 crystalline resin Polymers 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920001601 polyetherimide Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 229920006127 amorphous resin Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012765 fibrous filler Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
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
- G11B19/2018—Incorporating means for passive damping of vibration, either in the turntable, motor or mounting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/261—Moulds having tubular mould cavities
-
- 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
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/74—Sealings of sliding-contact bearings
-
- 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
Description
2 軸部材
7 ハウジング
7a シール部
7a1 内周面
7a2 外側面
7d1 ゲート除去部
8 軸受スリーブ
R1 ラジアル軸受部
R2 ラジアル軸受部
T1 スラスト軸受部
T2 スラスト軸受部
F 溌油剤
17a フィルムゲート
17 キャビティー
P 溶融樹脂
Claims (4)
- ハウジングと、該ハウジングの内部に配置された軸受スリーブと、該軸受スリーブの内周面に挿入された軸部材と、前記軸受スリーブの内周面と前記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油膜で前記軸部材をラジアル方向に非接触支持するラジアル軸受部とを備えた流体軸受装置において、
前記ハウジングは、樹脂材料を射出成形して形成されると共に、筒状の側部と、該側部の一端部から内径側に一体に連続して延びたシール部とを備え、
前記シール部は、前記軸部材の外周面との間にシール空間を形成する内周面と、該内周面に隣接する外側面とを有し、かつ、該外側面の外周縁部に、樹脂ゲート部を除去加工することにより形成されたゲート除去部を有することを特徴とする流体軸受装置。 - 前記ゲート除去部は環状に形成されていることを特徴とする請求項1に記載の流体軸受装置。
- 前記シール部の外側面に溌油剤が塗布されていることを特徴とする請求項1又は2に記載の流体軸受装置。
- ハウジングと、該ハウジングの内部に配置された軸受スリーブと、該軸受スリーブの内周面に挿入された軸部材と、前記軸受スリーブの内周面と前記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油膜で前記軸部材をラジアル方向に非接触支持するラジアル軸受部とを備えた流体軸受装置、の製造方法において、
前記ハウジングを、樹脂材料の射出成形により、筒状の側部と、該側部の一端部から内径側に一体に連続して延びたシール部とを備えた形態に成形するハウジング成形工程を含み、
前記シール部は、前記軸部材の外周面との間にシール空間を形成する内周面と、該内周面に隣接する外側面とを有し、
前記ハウジング成形工程において、前記シール部の外側面の外周縁部に対応する位置に環状のフィルムゲートを設け、該フィルムゲートから前記ハウジングを成形するキャビティー内に溶融樹脂を充填することを特徴とする流体軸受装置の製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003294528A JP4302463B2 (ja) | 2003-08-18 | 2003-08-18 | 流体軸受装置及びその製造方法 |
US10/562,880 US20070177831A1 (en) | 2003-08-18 | 2004-08-18 | Fluid bearing device and manufacturing method thereof |
CNB2004800237929A CN100400913C (zh) | 2003-08-18 | 2004-08-18 | 流体轴承装置及其制造方法 |
PCT/JP2004/012148 WO2005017380A1 (ja) | 2003-08-18 | 2004-08-18 | 流体軸受装置及びその製造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003294528A JP4302463B2 (ja) | 2003-08-18 | 2003-08-18 | 流体軸受装置及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005061557A JP2005061557A (ja) | 2005-03-10 |
JP4302463B2 true JP4302463B2 (ja) | 2009-07-29 |
Family
ID=34191041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003294528A Expired - Lifetime JP4302463B2 (ja) | 2003-08-18 | 2003-08-18 | 流体軸受装置及びその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070177831A1 (ja) |
JP (1) | JP4302463B2 (ja) |
CN (1) | CN100400913C (ja) |
WO (1) | WO2005017380A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4236891B2 (ja) * | 2002-09-26 | 2009-03-11 | Ntn株式会社 | 動圧軸受装置 |
US20070025652A1 (en) * | 2003-03-31 | 2007-02-01 | Ntn Corporation | Fluid bearing device |
JP4443915B2 (ja) * | 2003-12-24 | 2010-03-31 | Ntn株式会社 | 流体軸受装置 |
JP4531584B2 (ja) * | 2005-02-17 | 2010-08-25 | Ntn株式会社 | 流体動圧軸受装置およびこれを備えたモータ |
WO2007032299A1 (ja) * | 2005-09-14 | 2007-03-22 | Ntn Corporation | 流体軸受装置およびその製造方法、並びにディスク駆動装置 |
JP5306747B2 (ja) * | 2008-09-09 | 2013-10-02 | Ntn株式会社 | 流体軸受装置 |
KR101783730B1 (ko) * | 2009-12-24 | 2017-10-10 | 엔티엔 가부시키가이샤 | 유체 동압 베어링 장치 |
CN103415716B (zh) * | 2011-03-09 | 2016-06-08 | Ntn株式会社 | 流体动压轴承装置 |
JP2012244749A (ja) * | 2011-05-19 | 2012-12-10 | Hitachi Ltd | 樹脂モールド回転機 |
JP2013032835A (ja) * | 2011-06-30 | 2013-02-14 | Nippon Densan Corp | ファン |
JP2013092171A (ja) * | 2011-10-24 | 2013-05-16 | Nippon Densan Corp | モータおよびファン |
US9518426B2 (en) | 2011-12-16 | 2016-12-13 | Bruce A. Tunget | Rotary stick, slip and vibration reduction drilling stabilizers with hydrodynamic fluid bearings and homogenizers |
TWM486896U (zh) * | 2014-01-08 | 2014-09-21 | Delta Electronics Inc | 馬達 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3069625B2 (ja) * | 1994-08-08 | 2000-07-24 | 株式会社三協精機製作所 | 軸受装置 |
JPH11191943A (ja) * | 1997-12-25 | 1999-07-13 | Ntn Corp | 光ディスク装置のスピンドルモータ及び回転軸支持装置 |
JPH11108063A (ja) * | 1997-10-07 | 1999-04-20 | Nippon Seiko Kk | 転がり軸受用合成樹脂製保持器 |
US6832853B2 (en) * | 2000-07-27 | 2004-12-21 | Matsushita Electric Industrial Co., Ltd. | Bearing device and motor with the bearing device |
JP2002061641A (ja) * | 2000-08-23 | 2002-02-28 | Ntn Corp | 動圧型軸受装置 |
JP2002070849A (ja) * | 2000-08-28 | 2002-03-08 | Matsushita Electric Ind Co Ltd | 動圧型流体軸受装置およびその製造方法 |
WO2003027521A1 (fr) * | 2001-09-21 | 2003-04-03 | Sony Corporation | Unite de palier et moteur utilisant cette unite |
JP3925155B2 (ja) * | 2001-10-24 | 2007-06-06 | ソニー株式会社 | 軸受けユニットおよび軸受けユニットを有するモータ |
CN1223414C (zh) * | 2001-12-04 | 2005-10-19 | 财团法人工业技术研究院 | 制造流体轴承的装置及其方法 |
JP3735577B2 (ja) * | 2002-02-07 | 2006-01-18 | 日本電産サンキョー株式会社 | 軸受ホルダおよびその射出成形方法 |
KR100968163B1 (ko) * | 2002-04-23 | 2010-07-06 | 엔티엔 가부시키가이샤 | 유체 베어링 장치 |
US20030202722A1 (en) * | 2002-04-30 | 2003-10-30 | Minebea Co., Ltd. | Spindle motor having a fluid dynamic bearing system |
US7005768B2 (en) * | 2002-11-26 | 2006-02-28 | Nidec Corporation | Dynamic bearing device, producing method thereof, and motor using the same |
US20070025652A1 (en) * | 2003-03-31 | 2007-02-01 | Ntn Corporation | Fluid bearing device |
-
2003
- 2003-08-18 JP JP2003294528A patent/JP4302463B2/ja not_active Expired - Lifetime
-
2004
- 2004-08-18 WO PCT/JP2004/012148 patent/WO2005017380A1/ja active Application Filing
- 2004-08-18 US US10/562,880 patent/US20070177831A1/en not_active Abandoned
- 2004-08-18 CN CNB2004800237929A patent/CN100400913C/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN100400913C (zh) | 2008-07-09 |
WO2005017380A1 (ja) | 2005-02-24 |
CN1839267A (zh) | 2006-09-27 |
US20070177831A1 (en) | 2007-08-02 |
JP2005061557A (ja) | 2005-03-10 |
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