公开(公告)号：US12196262B2

公开(公告)日：2025-01-14

申请号：US17839622

申请日：2022-06-14

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Ayako Yamamoto ,  Yoshifumi Ito

IPC: F16C33/10 ,  B22F3/11 ,  B22F7/00 ,  F16C33/12

Abstract: The present invention provides a sliding member which enables further reduction of friction and improvement of seizure resistance without deteriorating wear resistance of a sliding surface. The sliding member includes a porous metal base material, and a resin material with which the porous metal base material is impregnated. The sliding member includes an exposed sliding surface. The sliding surface includes a top surface made of the resin material, and a bottom surface made of the porous metal base material. A height from the bottom surface to the top surface is 10 to 30 μm, and the resin material includes fluorine resin.

公开(公告)号：US11786969B2

公开(公告)日：2023-10-17

申请号：US17711227

申请日：2022-04-01

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Ayako Yamamoto ,  Yoshifumi Ito ,  Norihito Watanabe ,  Hirotaka Inoue ,  Akihiro Matsuoka

IPC: B22F7/04 ,  F16C33/12 ,  B22F3/11 ,  B22F3/26 ,  B32B15/08 ,  B32B3/02 ,  B32B5/16 ,  B22F3/24

CPC classification number: B22F7/04 ,  B22F3/1146 ,  B22F3/26 ,  B32B3/02 ,  B32B5/16 ,  B32B15/08 ,  F16C33/122 ,  B22F2003/247 ,  B22F2301/10 ,  B32B2260/025 ,  B32B2260/046 ,  B32B2264/105 ,  B32B2307/746 ,  Y10T428/12396

Abstract: Provided is a method for producing a sliding member formed by impregnating a porous base member made of a bronze-based alloy with a resin material, the sliding member including a sliding surface where both the porous base member and the resin material are exposed, the method including: a step of preparing a back metal layer; a porous base member formation step of forming the porous base member by depositing particles of the bronze-based alloy on a surface of the back metal layer and sintering the particles; an impregnation step of impregnating the porous base member with the resin material; a deformation step of deforming an end edge of the back metal layer in a direction away from the sliding surface; and a cutting step of cutting the porous base member impregnated with the resin material to form the sliding surface.

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.

公开(公告)号：US10041537B2

公开(公告)日：2018-08-07

申请号：US15070171

申请日：2016-03-15

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Hideki Iwata ,  Yoshifumi Ito

IPC: F16C33/12 ,  F16C33/20 ,  F16C29/02 ,  F16F9/36

Abstract: According to the present invention, there is provided a slide member for a shock absorber of a vehicle including a back metal, a porous sintered metal layer containing a porous sintered metal formed on the back metal and a resin with which the porous sintered metal is impregnated and covered, and a resin slide layer formed on the porous sintered metal layer and having a smooth slide surface, and the slide member is formed in a cylindrical shape so that the resin slide layer is disposed on an inner peripheral side. The resin slide layer is composed of polytetrafluoroethylene and a plurality of granular elements dispersed in the polytetrafluoroethylene, and the granular element is composed of molybdenum disulfide and molybdenum trioxide, and/or tungsten disulfide and tungsten trioxide.

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.