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1. WO2005098250 - DYNAMIC PRESSURE BEARING DEVICE

Publication Number WO/2005/098250
Publication Date 20.10.2005
International Application No. PCT/JP2005/004772
International Filing Date 17.03.2005
IPC
F16C 17/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
17Sliding-contact bearings for exclusively rotary movement
04for axial load only
G11B 19/20 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
19Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function
20Driving; Starting; Stopping; Control thereof
H02K 5/167 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
5Casings; Enclosures; Supports
04Casings or enclosures characterised by the shape, form or construction thereof
16Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
167using sliding-contact or spherical cap bearings
H02K 7/08 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
7Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
08Structural association with bearings
CPC
F16C 17/045
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
17Sliding-contact bearings for exclusively rotary movement
04for axial load only
045with grooves in the bearing surface to generate hydrodynamic pressure, e.g. spiral groove thrust bearings
F16C 17/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
17Sliding-contact bearings for exclusively rotary movement
04for axial load only
08for supporting the end face of a shaft or other member, e.g. footstep bearings
F16C 17/107
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
17Sliding-contact bearings for exclusively rotary movement
10for both radial and axial load
102with grooves in the bearing surface to generate hydrodynamic pressure
107with at least one surface for radial load and at least one surface for axial load
F16C 2370/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
2370Apparatus relating to physics, e.g. instruments
12Hard disk drives or the like
F16C 33/107
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
33Parts of bearings; Special methods for making bearings or parts thereof
02Parts of sliding-contact bearings
04Brasses; Bushes; Linings
06Sliding surface mainly made of metal
10Construction relative to lubrication
1025with liquid, e.g. oil, as lubricant
106Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
107Grooves for generating pressure
G11B 19/2018
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
19Driving, 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
20Driving; Starting; Stopping; Control thereof
2009Turntables, hubs and motors for disk drives; Mounting of motors in the drive
2018Incorporating means for passive damping of vibration, either in the turntable, motor or mounting
Applicants
  • NTN株式会社 NTN CORPORATION [JP]/[JP] (AllExceptUS)
  • 林 達也 HAYASHI, Tatsuya [JP]/[JP] (UsOnly)
  • 川瀬 達夫 KAWASE, Tatsuo [JP]/[JP] (UsOnly)
  • 楠 清尚 KUSUNOKI, Kiyotaka [JP]/[JP] (UsOnly)
  • 柴原 克夫 SHIBAHARA, Katsuo [JP]/[JP] (UsOnly)
  • 古森 功 KOMORI, Isao [JP]/[JP] (UsOnly)
Inventors
  • 林 達也 HAYASHI, Tatsuya
  • 川瀬 達夫 KAWASE, Tatsuo
  • 楠 清尚 KUSUNOKI, Kiyotaka
  • 柴原 克夫 SHIBAHARA, Katsuo
  • 古森 功 KOMORI, Isao
Agents
  • 江原 省吾 EHARA, Syogo
Priority Data
2004-10003230.03.2004JP
2004-14958319.05.2004JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) DYNAMIC PRESSURE BEARING DEVICE
(FR) DISPOSITIF D’APPUI DE PRESSION DYNAMIQUE
(JA) 動圧軸受装置
Abstract
(EN)
A dynamic pressure bearing device enabling the increase of the wear resistance of a thrust bearing part, wherein a shaft member (2) is rotatably supported in the thrust direction by generating a pressure by the dynamic pressure action of a lubricating oil in the clearance (C) of a thrust bearing between a thrust bearing surface (11a) with a dynamic pressure groove and a smooth thrust receiving surface (11b). The thrust receiving surface (11b) is formed in a flat surface, a tilted surface (17) is formed on the thrust bearing surface (11a), and a reduction part (15) formed by decreasing the axial width thereof toward the outer diameter side thereof is formed in the clearance (C) of the thrust bearing.
(FR)
Un dispositif d’appui de pression dynamique permettant l’augmentation de la résistance à l’usure d’une partie de butée, dans lequel un élément d’arbre (2) est supporté de manière articulée dans la direction de la poussée en générant une pression par l’action de la pression dynamique d’une huile lubrifiante dans l’espace (C) d’une butée entre une surface de la butée (11a) avec une rainure de pression dynamique et une surface lisse de réception de poussée (11b). La surface de réception de poussée (11b) est formée sur une surface plane, une surface inclinée (17) est formée sur la surface de la butée (11a), et une partie de réduction (15) est formée en diminuant la largeur axiale de celle-ci vers le côté du diamètre extérieur de celle-ci est formée dans l’espace (C) de la butée.
(JA)
 本発明は、スラスト軸受部の耐摩耗性を向上させることを目的とするものである。動圧溝を有するスラスト軸受面11aと平滑なスラスト受け面11bとの間のスラスト軸受隙間Cに潤滑油の動圧作用で圧力を発生し、軸部材2をスラスト方向で回転自在に支持する。スラスト受け面11bを平坦面とする一方、スラスト軸受面11aに傾斜面17を設け、スラスト軸受隙間Cに、外径側ほどその軸方向幅を小さくした縮小部15を設ける。
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