公开(公告)号：US20240255019A1

公开(公告)日：2024-08-01

申请号：US18424937

申请日：2024-01-29

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Seiji SANO

IPC: F16C9/02 ,  F16C33/04

CPC classification number: F16C9/02 ,  F16C33/046

Abstract: In a half thrust bearing for a crankshaft, a slide surface includes at least two oil grooves extending in a radial direction, pad surfaces located on both circumferential sides of each oil groove, a first inclined surface formed on a forward side of the oil groove in a rotation direction of the crankshaft, and a second inclined surface formed on a backward side of the oil groove in the rotation direction. Each of the first and second inclined surfaces has a circumferential length which varies along the radial direction and includes a ridge portion at a radial position where the circumferential length is minimum. The axial thickness of each of the first and second inclined surfaces is maximum at the ridge portion in the radial direction and become smaller from the ridge portion toward a radially inner end and toward a radially outer end.

公开(公告)号：US20230258224A1

公开(公告)日：2023-08-17

申请号：US18165360

申请日：2023-02-07

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Seiji SANO

IPC: F16C9/02 ,  F16C17/04 ,  F16C33/04

CPC classification number: F16C9/02 ,  F16C17/04 ,  F16C33/046

Abstract: A half thrust bearing includes a slide surface which includes: at least two oil grooves extending in a radial direction; a plurality of pad surfaces located on both sides of each oil groove in a circumferential direction; and at least two first inclined surfaces each formed between the oil groove and the pad surface on a front side of the oil groove in a rotation direction of a crankshaft. A plurality of circumferential grooves are formed in succession in the radial direction on the first inclined surface. A plurality of oil drain grooves extends side by side to intersect the circumferential direction and the radial direction on the pad surface. A plurality of flat portions are formed each between the adjacent oil drain grooves. Each oil drain groove is open at a radially outer end and/or a radially inner end of the pad surface.