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1. WO2020196599 - FLUID DYNAMIC BEARING DEVICE

Publication Number WO/2020/196599
Publication Date 01.10.2020
International Application No. PCT/JP2020/013255
International Filing Date 25.03.2020
IPC
F16C 17/02 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
02for radial load only
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
F16C 33/74 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
33Parts of bearings; Special methods for making bearings or parts thereof
72Sealings
74of sliding-contact bearings
Applicants
  • NTN株式会社 NTN CORPORATION [JP]/[JP]
Inventors
  • 加藤 大智 KATO Daichi
Agents
  • 城村 邦彦 SHIROMURA Kunihiko
  • 熊野 剛 KUMANO Tsuyoshi
Priority Data
2019-05905526.03.2019JP
2020-05052223.03.2020JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) FLUID DYNAMIC BEARING DEVICE
(FR) DISPOSITIF DE PALIER FLUIDE DYNAMIQUE
(JA) 流体動圧軸受装置
Abstract
(EN)
A fluid dynamic bearing device comprising a shaft member, a bearing sleeve 18 into the inner circumference of which the shaft member is inserted, and a dynamic pressure groove 26 that, by means of the pressure of an oil film generated in a radial bearing gap between the outer circumferential surface of the shaft member and the inner circumferential surface 24 of the bearing sleeve 18, supports the shaft member in a noncontact member so as to be capable of relative rotation. The dynamic pressure groove 26 is configured from a plurality of polygonal bumps 27 arranged in a pattern on the inner circumferential surface 24 of the bearing sleeve 18, and a polygonal groove part 28 formed so as to surround the polygonal bumps 27.
(FR)
L'invention concerne un dispositif de palier fluide dynamique comprenant un élément arbre, un manchon de palier (18) dans la circonférence interne duquel est inséré l'élément arbre, et une rainure de pression dynamique (26) qui, au moyen de la pression d'un film d'huile généré dans un espace de palier radial entre la surface circonférentielle externe de l'élément d'arbre et la surface circonférentielle interne (24) du manchon de palier (18), soutient l'élément arbre dans un élément sans contact de manière à pouvoir tourner par rapport à ce dernier. La rainure de pression dynamique (26) est conçue à partir d'une pluralité de bossages polygonaux (27) agencés selon un motif sur la surface circonférentielle interne (24) du manchon de palier (18), et d'une partie rainure polygonale (28) formée de façon à entourer les bossages polygonaux (27).
(JA)
軸部材と、内周に軸部材が挿入された軸受スリーブ18と、軸部材の外周面と軸受スリーブ18の内周面24との間のラジアル軸受隙間に生じる油膜の圧力でもって軸部材を相対回転自在に非接触で支持する動圧溝26とを備えた流体動圧軸受装置であって、動圧溝26は、軸受スリーブ18の内周面24にパターン配置された多数の多角形丘部27と、その多角形丘部27を囲繞するように形成された多角形溝部28とで構成されている。
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