公开(公告)号：US11236780B2

公开(公告)日：2022-02-01

申请号：US17086816

申请日：2020-11-02

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Yoshifumi Ito ,  Yu Suzuki ,  Takayoshi Yamauchi

IPC: F16C17/02 ,  F16C33/12 ,  F16C33/20

Abstract: A sliding member includes a back-metal layer and a sliding layer on the back-metal layer, and the sliding layer has a sliding surface. The sliding layer includes a synthetic resin and fibrous particles dispersed in the synthetic resin. A volume ratio of the fibrous particles in the sliding layer is 1 to 15%, and the fibrous particles are made of semi-graphite having a nano indenter hardness of 1000 to 5000 MPa. An average aspect ratio of the fibrous particles is not less than 5, where an aspect ratio is defined as a ratio of a major axis to a minor axis of the fibrous particle viewed from the sliding surface. An average grain size of the fibrous particles in cross-sectional view perpendicular to the sliding surface is 5 to 50 μm.

公开(公告)号：US12065933B2

公开(公告)日：2024-08-20

申请号：US17483854

申请日：2021-09-24

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Akiyoshi Imamura ,  Yu Suzuki ,  Marina Oguri

IPC: F01B13/06 ,  F01B1/06

CPC classification number: F01B13/061 ,  F01B1/0644 ,  F01B1/0648

Abstract: A bearing device includes a piston arranged in a cylinder of a rotor, and a half bearing mounted on the piston to support a roller. The piston includes a recessed holding surface, and holding side surfaces on both axial sides thereof. Each holding side surface includes a ridge portion having an arc-shaped or elliptic-arc-shaped profile protruding toward a radially inner side of the piston. The half bearing includes a partially cylindrical portion, and protruding portions at a circumferential center thereof. Each protruding portion has a protruding portion end face which includes a central recessed surface, and two support recessed surfaces located on both circumferential sides thereof, that have an arc shape or an elliptic arc shape to correspond to the profile of the ridge portion, so that only the two support recessed surfaces are in contact with the ridge portion.

公开(公告)号：US12018566B2

公开(公告)日：2024-06-25

申请号：US17483869

申请日：2021-09-24

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Akiyoshi Imamura ,  Yu Suzuki ,  Marina Oguri

IPC: F01B13/06 ,  F01B1/06 ,  F02B57/10

CPC classification number: F01B13/061 ,  F01B1/0644 ,  F01B1/0651 ,  F02B57/10

Abstract: A bearing device includes a piston arranged in a cylinder of a rotor, and a half bearing mounted on the piston to support a roller. The piston includes a recessed holding surface, and holding side surfaces on both axial sides thereof. Each holding side surface includes a ridge portion having an arc-shaped or elliptic-arc-shaped profile protruding toward a radially inner side of the piston. The half bearing includes a partially cylindrical portion, and protruding portions protruding from axial end faces thereof. Each protruding portion has a protruding portion end face which includes a central recessed surface, and two support recessed surfaces located on both circumferential sides thereof, that have an arc shape or an elliptic arc shape to correspond to the profile of the ridge portion, so that only the two support recessed surfaces are in contact with the ridge portion.

公开(公告)号：US20210140475A1

公开(公告)日：2021-05-13

申请号：US17086816

申请日：2020-11-02

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Yoshifumi Ito ,  Yu Suzuki ,  Takayoshi Yamauchi

IPC: F16C33/20

Abstract: A sliding member includes a back-metal layer and a sliding layer on the back-metal layer, and the sliding layer has a sliding surface. The sliding layer includes a synthetic resin and fibrous particles dispersed in the synthetic resin. A volume ratio of the fibrous particles in the sliding layer is 1 to 15%, and the fibrous particles are made of semi-graphite having a nano indenter hardness of 1000 to 5000 MPa. An average aspect ratio of the fibrous particles is not less than 5, where an aspect ratio is defined as a ratio of a major axis to a minor axis of the fibrous particle viewed from the sliding surface. An average grain size of the fibrous particles in cross-sectional view perpendicular to the sliding surface is 5 to 50 μm.