公开(公告)号：US20190360520A1

公开(公告)日：2019-11-28

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

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：US10400821B2

公开(公告)日：2019-09-03

申请号：US15753325

申请日：2016-05-24

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Kwangik Na ,  Shigeyoshi Mori ,  Tadatoshi Nagasaki

IPC: F16C33/10 ,  F16N7/20 ,  H02K5/167 ,  F04D29/58 ,  F16N39/02 ,  F16N7/14 ,  F16C17/10

Abstract: When an annular portion of a thrust collar rotates together with a rotating shaft member, centrifugal force and shear force, or differential pressure caused by difference in flow rate are generated in lubricating oil in a circulation oil chamber. With this, the lubricating oil in the circulation oil chamber is guided from the inner peripheral side to the outer peripheral side of the annular portion, through a circulation hole penetrating the annular portion. The flow of lubricating oil guided by the circulation hole forms a flow of lubricating oil from a lower oil chamber to an upper oil chamber through the circulation oil chamber. As a result, the lubricating oil stored in the lower oil chamber is circulated to the upper oil chamber through the circulation oil chamber, by rotation of the thrust collar.

公开(公告)号：US10323690B2

公开(公告)日：2019-06-18

申请号：US15753327

申请日：2016-07-29

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Kwangik Na ,  Shigeyoshi Mori

IPC: F16C33/10 ,  F16N7/02 ,  F16N39/02 ,  F01M5/00 ,  F16C37/00 ,  F16C17/10 ,  F16N7/36 ,  F04D29/58

Abstract: A lubricating oil passage portion that constitutes a cooling portion is exposed to the outside from a casing. Lubricating oil having absorbed heat of a thrust bearing portion and a journal bearing portion is cooled in the cooling portion, when the lubricating oil moves from an upper oil chamber to a lower oil chamber while circulating by use of gravity. Thus, the circulating lubricating oil prompts cooling of the heated thrust bearing portion and journal bearing portion. Additionally, the lubricating oil passage portion of the cooling portion is provided integrally with the casing, on the radially outer side of the casing.

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.

公开(公告)号：US10240630B2

公开(公告)日：2019-03-26

申请号：US15362382

申请日：2016-11-28

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Yuji Kawaai

IPC: F16C17/06 ,  F01D25/16 ,  F04D29/041 ,  F04D29/051 ,  H02K7/08

Abstract: A leveling plate including a main body and an end protrusion. The end protrusion is provided at both ends in a longer side direction of the main body, and protrudes from the main body in a thickness direction, the end protrusion having an end circumferential surface whose central axis extends in parallel with a shorter side direction of the main body.

公开(公告)号：US20190055766A1

公开(公告)日：2019-02-21

申请号：US16052855

申请日：2018-08-02

Applicant: Daido Metal Company Ltd.

Inventor： Takayoshi YAMAUCHI

IPC: E05D15/06

Abstract: Provided is a guide roller for a vehicular slide door. The guide roller has an annular metal inner ring; a retainer holding a bearing; an annular metal outer ring and a sliding layer including a synthetic resin. When the sliding layer is sectionalized into a sliding surface side area, an intermediate area and an interface side area, from the sliding surface to an interface with the outer ring, the synthetic resins in the sliding surface side area, the intermediate area and the interface side area have, respectively, a degree of crystallizations X1, X2 and X3 and nanoindenter hardnesses Y1, Y2 and Y3 wherein X2−X1 is less than 5%, and X2−X3 is less than 5% and wherein Y2 is not less than 115% of Y1, and Y2 is not less than 115% of Y3.

公开(公告)号：US20190040924A1

公开(公告)日：2019-02-07

申请号：US15759671

申请日：2016-09-15

Applicant: HONDA MOTOR CO., LTD. ,  DAIDO METAL COMPANY LTD.

Inventor： Kentaro KOMORI ,  Daijiro ENDO ,  Masato KUSHIYA ,  Mikio SUZUKI

IPC: F16F9/36 ,  F16C17/12 ,  F16C33/20 ,  F16F9/53

Abstract: An object of the present invention is to provide a vibration damping device including a bearing member capable of achieving simplification of configuration in the vibration damping device, reducing frictional force during operation, and having an excellent wear resistance. A vibration damping device of the present invention includes a bearing structure, in which a metal bush (bearing member) has a resin layer on a side defined as a friction sliding surface of a base member, the resin layer includes polytetrafluoroethylene (PTFE) and a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin, and the metal bush is lubricated by a magneto-rheological fluid composition.

公开(公告)号：US20180355910A1

公开(公告)日：2018-12-13

申请号：US15978345

申请日：2018-05-14

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Shinichi SAKURAI

IPC: F16C17/04 ,  F16C9/02 ,  F02F7/00

CPC classification number: F16C17/047 ,  F02F7/0053 ,  F16C9/02 ,  F16C9/03 ,  F16C17/04 ,  F16C33/046 ,  F16C33/1075 ,  F16C2300/22 ,  F16C2360/22

Abstract: A half thrust bearing having a semi-annular shape includes a sliding surface for receiving an axial force of a crankshaft of an internal combustion engine, and a rear surface on an opposite side of the sliding surface, and defines a reference plane on the rear surface side that is perpendicular to an axial direction. The sliding surface includes a flat surface portion near a circumferentially central portion and in parallel with the reference plane, and inclined surface portions on both sides of the flat surface portion in a circumferential direction. At any radial positions of the half thrust bearing, an axial distance between the reference plane and the sliding surface is maximum at the flat surface portion, and is reduced in the inclined surface portions toward both circumferential end portions of the half thrust bearing.

公开(公告)号：US20180087574A1

公开(公告)日：2018-03-29

申请号：US15704197

申请日：2017-09-14

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Takayoshi YAMAUCHI

IPC: F16C33/20

Abstract: A sliding member includes a sliding layer including graphite particles dispersed in a synthetic resin matrix. The graphite particles have a volume ratio of 5% to 50% and are composed of spheroidal particles and flake-like particles, respectively having a graphitization degree K1 and K2. The flake-like particles have a volume ratio of 10 to 40% with respect to a total volume of the graphite particles. The spheroidal particles have a cross-sectional structure with AB planes of a graphite crystal laminated from a surface toward a center. The flake-like particles have a cross-sectional structure with the AB planes laminated in a thickness direction. The spheroidal particles and the flake-like particles have an average particle size of 3 to 50 and 1 to 25 μm respectively. K1 is 0.80 to 0.97 and K2 is greater than K1, and a difference K2 −K1 is 0.03 to 0.15.

公开(公告)号：US20170292560A1

公开(公告)日：2017-10-12

申请号：US15480488

申请日：2017-04-06

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Yusuke UESU ,  Yasushi SAITO

IPC: F16C9/02

CPC classification number: F16C9/02 ,  F01M1/06 ,  F01M11/02 ,  F01M2001/062 ,  F01M2011/026 ,  F02F7/0053 ,  F16C3/14 ,  F16C17/022 ,  F16C17/26 ,  F16C33/046 ,  F16C33/1055 ,  F16C33/1065 ,  F16C35/02

Abstract: The bearing apparatus 1 includes a crankshaft having multiple journals, main bearings supporting the crankshaft, and a bearing housing. The plurality of journals include a first journal with a lubricating oil passage and a second journal without a lubricating oil passage. The first and second journals are supported by first and second main bearings, respectively. The bearing housing is constituted by an Al-alloy upper housing and an Fe-alloy lower housing. The depth of the oil groove of the upper half bearing of the second main bearing at least in a ±45° region is equal to or smaller than a half of the depth of the oil groove of the upper half bearing of the first main bearing in the ±45° region.