Title:
SEMI-FLOATING BEARING AND TURBOCHARGER
Document Type and Number:
WIPO Patent Application WO/2022/114066
Kind Code:
A1
Abstract:
This semi-floating bearing (2) comprises: a bearing body (20); and a journal bearing surface (21) which is disposed on the inner circumferential surface of the bearing body (20) and radially supports a rotary shaft (50) with an oil film therebetween. The semi-floating bearing (2) comprises a groove section (23) which passes through the journal bearing surface (21) in a direction including the axial direction of the bearing. In the radial cross-section of the semi-floating bearing (2), the journal bearing surface (21) has three of more arc sections (21a) which are alternately disposed in the circumferential direction of the bearing and bulge toward the radial outside; and three or more connection sections (21b) which have smaller curvatures than the arc sections (21a). The groove section (23) is disposed on the arc sections (21a) or on the connection sections (21b). The connection sections (21b) each have a narrowest section (210b) in which a gap between the connection section (21b) and the rotary shaft (50) becomes the narrowest.
Inventors:
MATSUI KUNINORI (JP)
OHTA KEIICHI (JP)
OHTA KEIICHI (JP)
Application Number:
PCT/JP2021/043222
Publication Date:
June 02, 2022
Filing Date:
November 25, 2021
Export Citation:
Assignee:
TAIHO KOGYO CO LTD (JP)
International Classes:
F16C17/02; F02B39/00; F16C17/04; F16C23/04
Domestic Patent References:
| WO2017203880A1 | 2017-11-30 |
Foreign References:
| JP2014209036A | 2014-11-06 | |||
| JPH11336744A | 1999-12-07 |
Attorney, Agent or Firm:
HIGASHIGUCHI Michiaki et al. (JP)
Download PDF: