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    HALF BEARING AND SLIDING BEARING
    11.
    发明申请
    HALF BEARING AND SLIDING BEARING 有权

    公开(公告)号：US20220260110A1

    公开(公告)日：2022-08-18

    申请号：US17587305

    申请日：2022-01-28

    Applicant: DAIDO METAL COMPANY LTD.

    Inventor： Daiki IIDA ,  Yasushi SAITO

    IPC: F16C9/02

    Abstract: Provided is a half bearing constituting a sliding bearing for a shaft member of an internal combustion engine that is unlikely to cause seizure in a sliding surface even if deflection or whirling of the shaft member occurs during an operation of the internal combustion engine. In a half bearing that constitutes a sliding bearing, a plurality of circumferential-direction grooves are formed to be adjacent to each other in a sliding surface including first and second curved surfaces with different curvatures, the sliding surface includes a plane portion that is parallel to an axial line direction and an inclined surface portion that is adjacent to the plane portion, the inclined surface portion is displaced from the plane portion toward an end portion of the sliding surface in the axial line direction such that the sliding surface successively comes close to a back surface, positions of maximum groove depths of the circumferential-direction grooves are located on groove center lines, the groove center lines in the inclined surface portion of the sliding surface are inclined relative to a vertical line toward the end portion of the sliding surface in the axial line direction, a groove inclination angle of the circumferential-direction grooves that are closest to the plane portion is a minimum angle, and the groove inclination angle successively increases toward the end portion of the sliding surface in the axial line direction.

    SLIDING MEMBER AND METHOD FOR PRODUCING SAME
    12.
    发明申请
    SLIDING MEMBER AND METHOD FOR PRODUCING SAME 有权

    公开(公告)号：US20220176673A1

    公开(公告)日：2022-06-09

    申请号：US17512957

    申请日：2021-10-28

    Applicant: DAIDO METAL COMPANY LTD.

    Inventor： Erina Yasuda ,  Shigeru Inami ,  Yuma Haneda

    IPC: B32B3/26 ,  B32B15/08 ,  B32B38/00 ,  B32B37/18

    Abstract: A sliding member including: a soft metal layer formed by stacking a crystal of soft metal, in which a coarse crystal is exposed on a surface of the soft metal layer, the coarse crystal has a particle length of 1.5 μm or more in a plane direction of the surface, and a distribution proportion of the coarse crystal is 5 to 50%, wherein the distribution proportion is a proportion of a circumscribed rectangle in a unit length of a virtual straight line, the circumscribed rectangle is applied to the coarse crystal appearing in a cross section of the soft metal layer, and the virtual straight line passing through the circumscribed rectangles in the cross section and parallel to a surface reference line of the soft metal layer is formed, an upper side of the circumscribed rectangle is parallel to the surface reference line of the soft metal layer, and the surface reference line is an average height of the surface of the soft metal layer appearing in the cross section.

    Sliding member
    13.
    发明授权
    Sliding member 有权

    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.

    SLIDING MEMBER
    15.
    发明申请
    SLIDING MEMBER 有权

    公开(公告)号：US20210246944A1

    公开(公告)日：2021-08-12

    申请号：US17159549

    申请日：2021-01-27

    Applicant: DAIDO METAL COMPANY LTD.

    Inventor： Hideyuki NAKAJIMA

    IPC: F16C31/02 ,  F16C33/20 ,  C08L61/16 ,  C08K3/34 ,  C08K3/04 ,  C08K3/16 ,  C08K7/10 ,  C08K7/06

    Abstract: Provided is a sliding member for a thrust bearing. The sliding member includes a back-metal layer and a sliding layer, and has a partially annular shape. The sliding layer includes a synthetic resin and has a sliding surface. In a center line region of the sliding layer, the sliding layer has a linear expansion coefficient KS in a direction parallel to a circumferential direction of the sliding member, a linear expansion coefficient KJ in a direction parallel to a radial direction of the sliding member, and a linear expansion coefficient KT in a direction perpendicular to the sliding surface, and the linear expansion coefficients KS, KJ, and KT satisfy the following relations (1) and (2): Relation (1): 1.1≤KS/KJ≤2; and Relation (2): 1.3≤KT/{(KS+KJ)/2}≤2.5.

    BEARING SYSTEM, BEARING SYSTEM CONTROL METHOD, AND COMPUTER PROGRAM FOR CONTROLLING BEARING SYSTEM
    16.
    发明申请
    BEARING SYSTEM, BEARING SYSTEM CONTROL METHOD, AND COMPUTER PROGRAM FOR CONTROLLING BEARING SYSTEM 有权

    公开(公告)号：US20210215204A1

    公开(公告)日：2021-07-15

    申请号：US17059832

    申请日：2019-07-05

    Applicant: DAIDO METAL COMPANY LTD.

    Inventor： Kwangik NA ,  Yuji KAWAAI ,  Tadatoshi NAGASAKI

    IPC: F16C41/00 ,  F16C17/24

    Abstract: In order to enable a bearing system in which a plurality of bearings operate simultaneously or in association with each other to achieve an optimal overall performance: this bearing system is equipped with a bearing A and a measurement execution unit A therefor, a bearing B and a measurement execution unit B therefor, and a control unit for controlling the measurement execution unit A and the measurement execution unit B; the control unit transmits an instruction to the measurement execution unit A and the measurement execution unit B to enable execution of the performance required of the bearing system. The measurement execution unit A and the measurement execution unit B respectively operate the bearing A and the bearing B under an instructed operation condition. The relationship of an operation condition A of the bearing A and an operation condition B of the bearing B to an index, which indicates each of the operational states of the bearing A and the bearing B when the bearing A and the bearing B are operated under the operation conditions therefor, has been measured and saved in advance. The control unit references the relationship and accordingly transmits an instruction to the measurement execution unit A and the measurement execution unit B.

    HALF BEARING AND SLIDING BEARING
    17.
    发明申请
    HALF BEARING AND SLIDING BEARING 有权

    公开(公告)号：US20210095712A1

    公开(公告)日：2021-04-01

    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 ,  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.

    Half bearing and sliding bearing
    19.
    发明授权
    Half bearing and sliding bearing 有权

    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.

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