Title:
MULTILOBE BEARING
Document Type and Number:
WIPO Patent Application WO/2021/205686
Kind Code:
A1
Abstract:
A semi-floating bearing (multilobe bearing) 13 is provided with: an annular body 13a into which a shaft 15 is inserted; and a radial bearing surface 13d including a plurality of arc surfaces 37 that are formed at an inner peripheral surface of the body 13a, have curvature centers A different from each other, and are arranged adjacent to each other in a circumferential direction of the body 13a, wherein a minimum distance Ra between a central axis O of a shaft 15 and the arc surfaces 37, a curvature radius Rb of the arc surfaces 37, and a radius Rs of the shaft 15 satisfy relationships expressed by the following formulas (1) and (2). (1): Ra/Rs ≥ 1.001, (2): (Rb - Ra)/0.9 ≤ (Rb - Rs) ≤ (Rb - Ra)/0.6 where Ra represents the minimum distance between the central axis O of the shaft 15 and the arc surfaces 37, Rb represents the curvature radius of the arc surfaces 37, and Rs represents the radius of the shaft 15
Inventors:
UNEURA YUTAKA (JP)
NISHII SHUNSUKE (JP)
MOCHIZUKI HIROKI (JP)
NISHII SHUNSUKE (JP)
MOCHIZUKI HIROKI (JP)
Application Number:
PCT/JP2020/042658
Publication Date:
October 14, 2021
Filing Date:
November 16, 2020
Export Citation:
Assignee:
IHI CORP (JP)
International Classes:
F02B39/00; F16C17/02; F16C27/00; F16C39/04
Domestic Patent References:
| WO2017203880A1 | 2017-11-30 |
Foreign References:
| JPH09200998A | 1997-07-31 | |||
| JP2019065934A | 2019-04-25 | |||
| JP2001116046A | 2001-04-27 | |||
| JPS54118936A | 1979-09-14 | |||
| JPS566914A | 1981-01-24 |
Attorney, Agent or Firm:
AOMI PATENT (JP)
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