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公开(公告)号：US10995296B2
公开(公告)日：2021-05-04
申请号：US15432439
申请日：2017-02-14
Applicant: DAIDO METAL COMPANY LTD.
Inventor： Takayoshi Yamauchi
IPC: C10M125/02 , C10M103/02 , C10M125/08 , F16C33/10 , C10M125/24 , F16C33/16 , F16C33/12 , C10M125/18 , C10M113/02 , C10M125/30 , C10M107/44 , C10M125/10 , C10M125/22 , C10N20/06 , C10N50/08 , C10N50/00 , C10M147/02
Abstract: A sliding member includes a back metal layer and a sliding layer on the back metal layer. The sliding layer includes a synthetic resin matrix and graphite particles dispersed in the matrix in a volume ratio of 5-50% of that of the sliding layer. The graphite particles are composed of spheroidal and flake-like particles. The flake-like particles have a volume ratio of 10-40% of total graphite particles. The spheroidal particles have a cross-sectional structure with a plurality of AB planes of a graphite crystal laminated along a curved particle surface, from the surface toward a center direction. The flake-like graphite particles have a cross-sectional structure with the plurality of AB planes laminated in a thickness direction of the thin plate shape. The spheroidal particles have an average particle size of 3-50 μm, and the flake-like graphite particles have an average particle size of 1-25 μm.
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公开(公告)号：US20210095713A1
公开(公告)日：2021-04-01
申请号：US17034692
申请日：2020-09-28
Applicant: DAIDO METAL COMPANY LTD.
Inventor： Shiho GOTO , Seiji AMANO , Ryota ITO
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.
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公开(公告)号：US10948010B2
公开(公告)日：2021-03-16
申请号：US16521667
申请日：2019-07-25
Applicant: DAIDO METAL COMPANY LTD.
Inventor： Yuji Kawaai
Abstract: A bearing device includes a base plate, a plurality of sliding pads and support members. The sliding pad is movable relative to the base plate. The support members are located between the base plate and the sliding pad, and shift a position of a load supporting point in a circumferential direction of the base plate, the load supporting point serving as a point for supporting a load received from the sliding pad. When any virtual flat surface perpendicular to a rotating shaft member is considered as a reference surface, and when a distance from the reference surface through the load supporting point to an end of the sliding pad at the opposite side to the base plate is defined as a setting distance, a position of the load supporting point is shifted in a circumferential direction of the base plate with no change in the setting distance.
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公开(公告)号：US10907683B2
公开(公告)日：2021-02-02
申请号：US16734585
申请日：2020-01-06
Applicant: DAIDO METAL COMPANY LTD.
Inventor： Shiho Goto
Abstract: A half thrust bearing includes a back metal layer, a bearing alloy layer defining a slide surface, and two thrust relieves formed adjacent to both circumferential end surfaces of the half thrust bearing and each including a thrust relief surface. The back metal layer includes an exposed end face configuring at least a part of the circumferential end surface, an exposed slant surface configuring at least a part of the thrust relief surface, and a transition surface formed between the exposed end face and the exposed slant surface. The transition surface is covered with a cover member including a cover end surface configuring at least a part of the circumferential end surface and a cover slant surface configuring at least a part of the thrust relief surface.
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公开(公告)号：US20210025450A1
公开(公告)日：2021-01-28
申请号：US16931689
申请日：2020-07-17
Applicant: DAIDO METAL COMPANY LTD.
Inventor： Masahiro NAKAI
Abstract: A sliding member includes a back-metal layer including an Fe alloy and a sliding layer including a copper alloy including 0.5 to 12 mass % of Sn and the balance of Cu and inevitable impurities. The sliding layer has a cross-sectional structure perpendicular to a sliding surface of the sliding layer. The cross-sectional structure includes first copper alloy grains that are in contact with a bonding surface of the back-metal layer and second copper alloy grains that are not in contact with the bonding surface. The first copper alloy grains has an average grain size D1 and the second copper alloy grains has an average grain size D2. D1 and D2 satisfy the following relations: D1 is 30 to 80 μm; and D1/D2=0.1 to 0.3.
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Patent Agency Ranking
公开(公告)号：US10900521B2
公开(公告)日：2021-01-26
申请号：US16654891
申请日：2019-10-16
Applicant: DAIDO METAL COMPANY LTD.
Inventor： Yuma Haneda , Manabu Izumida , Erina Yasuda , Tomoyasu Shiroya
Abstract: A sliding member includes a bearing alloy layer, a solid lubricant layer, particles and a covering portion. The solid lubricant layer is provided on a sliding surface side of the bearing alloy layer and is deposited on the bearing alloy layer. The particles form the solid lubricant layer and are made of metal sulfide. The covering portion is provided over outermost surfaces of the particles on the sliding surface side and are made of metal oxide including the same metal element as a metal element constituting the particles.
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公开(公告)号：US10823224B2
公开(公告)日：2020-11-03
申请号：US16678617
申请日：2019-11-08
Applicant: DAIDO METAL COMPANY LTD.
Inventor： Shigeru Inami , Manabu Izumida , Yukihiro Ito , Takahito Nakagawa
Abstract: A bearing member according to an embodiment of the present invention is formed into a single cylindrical shape or a cylindrical shape divided into arcs along a circumferential direction, and is assembled to a housing on an outer peripheral side of the bearing member. The bearing member includes an outer peripheral surface provided on a side opposed to an inner peripheral surface of the housing. A maximum height Rz (μm) of a surface roughness of the outer peripheral surface is set as 2.00 μm≤Rz≤4.00 μm, and a value of ratio between an average protruding-peak height Rpk (μm) and a load length rate Mr1 (%), that is a load curve parameter for the surface roughness is set as 0.010≤Rpk/Mr1≤0.100.
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公开(公告)号：US20200277988A1
公开(公告)日：2020-09-03
申请号：US16762633
申请日：2018-11-08
Applicant: DAIDO METAL COMPANY LTD.
Inventor： Tetsuya OGAWA , Kazuki SAKAI
Abstract: This half thrust bearing having a half-ring shape has: a sliding surface for receiving force in the axial direction; a back surface opposed to the sliding surface; and a resin covering layer on the sliding surface. The half thrust bearing is characterized in that the thickness of the resin covering layer is greatest at the circumferential central part of the half thrust bearing, and becomes lesser toward both circumferential ends of the half thrust bearing. The present invention also pertains to a thrust bearing, a bearing device, and an internal combustion engine.
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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
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.
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公开(公告)号：US10422380B2
公开(公告)日：2019-09-24
申请号：US15704197
申请日：2017-09-14
Applicant: DAIDO METAL COMPANY LTD.
Inventor： Takayoshi Yamauchi
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 μm, 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.
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