公开(公告)号：US10704590B2

公开(公告)日：2020-07-07

申请号：US16258882

申请日：2019-01-28

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Seiji Amano ,  Toru Watanabe

IPC: F16C9/02 ,  F16C17/04 ,  F16C33/10 ,  H02K7/09 ,  F16C33/56 ,  F16C17/10 ,  F16C33/04 ,  F02F7/00

Abstract: Provided is a semi-annular shaped half thrust bearing. The half thrust bearing has a sliding surface and a back surface opposite to the sliding surface. The sliding surface includes a plurality of recesses. Each recess has a recess surface recessed from the sliding surface toward the back surface. The recess surface is convex toward the back surface in cross-sectional view in a center line direction of the half thrust bearing. The recess surface includes a plurality of grooves. The grooves are recessed from the recess surface toward the back surface. The grooves extend in the center line direction so that smooth surfaces and the grooves are alternately arranged on the recess surface in a horizontal direction of the half thrust bearing.

公开(公告)号：US11225998B2

公开(公告)日：2022-01-18

申请号：US17034692

申请日：2020-09-28

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Shiho Goto ,  Seiji Amano ,  Ryota Ito

IPC: F16C9/02 ,  F16C33/04 ,  F16C33/10 ,  F16C17/02

Abstract: A semi-cylindrical half bearing for a sliding bearing includes at least one axial groove formed on its inner circumferential surface that includes a smooth groove surface formed back away from the inner circumferential surface toward a radially outer side. The half bearing further includes a plurality of axial narrow grooves and a plurality of circumferential narrow grooves that are formed further back away from the groove surface toward the radially outer side, and extend in circumferential and axial directions, respectively, so as to cross each other. A depth of the axial narrow groove from the groove surface is greater than a depth of the circumferential narrow groove from the groove surface, and a width of the axial narrow groove on the groove surface is greater than a width of the circumferential narrow groove on the groove surface.

公开(公告)号：US10557495B2

公开(公告)日：2020-02-11

申请号：US16142251

申请日：2018-09-26

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Seiji Amano ,  Shinichi Sakurai

IPC: F16C9/04 ,  F16C33/04 ,  F16C33/10 ,  F16C17/02

Abstract: A connecting rod bearing for a crankpin of a crankshaft of an internal combustion engine includes a pair of half bearings forming a cylindrical shape. Each half bearing has a main cylindrical portion including a circumferentially central portion of the half bearing, and crush reliefs formed on both circumferential sides of the main cylindrical portion with a wall thickness being smaller than that of the main cylindrical portion. At least one half bearing has an axial groove which extends in an axial direction on a slide surface of the main cylindrical portion, and is apart from the circumferentially central portion by a circumferential angle of 10° or more toward a forward side in a rotation direction of the crankpin, and apart from the crush relief by a circumferential angle of 10° or more toward the circumferentially central portion.

公开(公告)号：US10550884B2

公开(公告)日：2020-02-04

申请号：US16171577

申请日：2018-10-26

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Seiji Amano ,  Shinichi Sakurai

IPC: F16C9/02 ,  F16C33/10 ,  F16C9/04 ,  F16C17/02 ,  F16C33/04

Abstract: Provided is a semi-cylindrical-shaped half bearing having an inner surface including a center zone and end zones each including a plurality of recesses. Each recess includes a groove forming zone adjacent to the peripheral edge and including a plurality of circumferential grooves extending from the peripheral edge along the circumferential direction. An area ratio S2 of an area of the groove forming zone to an area of the recess in the end zone is larger than an area ratio S1 in the center zone. A maximum depth D4 of the circumferential groove in the end zone is larger than a maximum depth D2 of the circumferential groove in the center zone. A sliding bearing of the present invention includes the above half bearing.

公开(公告)号：US11261904B2

公开(公告)日：2022-03-01

申请号：US17034685

申请日：2020-09-28

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Ryota Ito ,  Seiji Amano ,  Shiho Goto

IPC: F16C9/02 ,  F16C17/24 ,  F16C33/10 ,  F16C33/04

Abstract: A semi-cylindrical half bearing for a sliding bearing includes at least one axial groove formed on its inner circumferential surface that includes a smooth groove surface formed back away from the inner circumferential surface toward a radially outer side of the half bearing. The groove surface forms a convex curve toward the radially outer side in a cross-section perpendicular to the axial direction of the half bearing, and forms a straight line extending in the axial direction in a cross-section parallel to the axial direction. The half bearing further includes a plurality of axial narrow grooves formed on the groove surface so as to be back away from the groove surface toward the radially outer side, that extend in the axial direction of the half bearing.

公开(公告)号：US10704591B2

公开(公告)日：2020-07-07

申请号：US16416611

申请日：2019-05-20

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Seiji Amano ,  Toru Watanabe

IPC: F16C9/02 ,  F16C33/10 ,  F16C33/04 ,  F16C17/02 ,  F16C9/04

Abstract: Provided is a semi-cylindrical shaped half bearing. The half bearing has an inner surface forming a sliding surface. The sliding surface includes a plurality of recesses. Each recess has a smooth recess surface recessed from the sliding surface toward an outer diameter side of the half bearing. The recess surface forms a convex curve toward the outer diameter side of the half bearing in a cross-sectional view in any direction perpendicular to the sliding surface. The recess surface includes a plurality of circumferential grooves. The circumferential grooves are recessed from the recess surface toward the outer diameter side of the half bearing. The circumferential grooves extend along a circumferential direction of the half bearing so that smooth surfaces and the circumferential grooves are alternately arranged on the recess surface.

公开(公告)号：US10302124B2

公开(公告)日：2019-05-28

申请号：US16038338

申请日：2018-07-18

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Seiji Amano ,  Akifumi Yamamoto ,  Shinichi Sakurai

IPC: F16C9/02 ,  F16C33/10 ,  F16C33/04 ,  F16C17/02

Abstract: Provided is a semi-cylindrical shaped half bearing. The half bearing has an inner surface forming a sliding surface and including a plurality of recesses. Each recess has a smooth recess surface and a peripheral edge. The recess surface forms a convex curve toward the outer diameter side of the half bearing in cross-sectional view in a direction parallel to a circumferential direction of the half bearing. The recess includes a groove forming zone adjacent to the peripheral edge of the recess. The groove forming zone includes a plurality of circumferential grooves. The circumferential grooves extend from the peripheral edge of the recess along the circumferential direction of the half bearing. The present invention also provides a cylindrical sliding bearing including the above half bearing.