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    BEARING DEVICE WITH IC TAG ATTACHED
    1.
    发明公开
    BEARING DEVICE WITH IC TAG ATTACHED 有权
    带有固定IC标签的轴承装置

    公开(公告)号：EP2728517A4

    公开(公告)日：2014-12-24

    申请号：EP12808224

    申请日：2012-06-21

    申请人： NTN TOYO BEARING CO LTD ,  KRD CORP

    发明人： ITO TAKASHI ,  YAMAMOTO NAOTA ,  YAMAKAWA TSUKASA ,  KOMATSU HIROHIDE ,  SAWA TSUTOMU

    IPC分类号： G06K19/07 ,  F16C19/00 ,  F16C33/58 ,  F16C41/00 ,  G06K19/077 ,  H04B5/00 ,  H04B5/02

    CPC分类号： F16C41/008 ,  F16C19/364 ,  F16C19/548 ,  F16C33/586 ,  F16C43/04 ,  F16C2233/00 ,  F16C2300/02 ,  G06K19/0723 ,  G06K19/07771 ,  H04B5/0056

    摘要： A bearing assembly including an IC tag in which information can be reliably exchanged between the IC tag and an external reader/writer. The bearing assembly includes a rolling bearing (10) including an outer race (1), an inner race (2) and rolling elements (3) disposed between the outer race (1) and the inner race (2), and an IC tag (20) capable of communicating with an external reader/writer device without contacting the reader/writer device, and attached to a metal member (M) of the rolling bearing. The IC tag (20) includes a tag antenna (24) and is configured such that information can be exchanged between the tag antenna (24) and a reader/writer antenna of the reader/writer device by forming a closed magnetic circuit between the tag antenna (24) and the reader/writer antenna. The IC tag (20) is received in a hole (11) formed in the surface of the metal member (M). The tag antenna (24) includes at least two protrusions (22a and 22c) facing the opening of the hole (11). The protrusions (22a and 22c) are arranged such that magnetic fluxes leaving and/or entering the protrusions (22a and 22c) pass inside of the edge defining the opening of the hole (11) and extend to outside of the hole (11), so that information can be exchanged between the IC tag (20) and the reader/writer device.

    DEVICE FOR ESTIMATING SERVICE LIFE AND METHOD FOR ESTIMATING SERVICE LIFE OF ROLLING BEARING
    2.
    发明公开
    DEVICE FOR ESTIMATING SERVICE LIFE AND METHOD FOR ESTIMATING SERVICE LIFE OF ROLLING BEARING 有权
    DEVICE AND METHOD FOR滚动轴承的确定LIFE

    公开(公告)号：EP2873961A4

    公开(公告)日：2016-03-30

    申请号：EP13816454

    申请日：2013-07-04

    申请人： NTN TOYO BEARING CO LTD

    发明人： ITO TAKASHI ,  FUJITA TAKUMI

    IPC分类号： G01M13/04

    CPC分类号： G01M13/04

    摘要： The lifetime estimation device for a rolling bearing includes a buildup height estimation unit operable for estimating the buildup height of the indentation from a rolling surface from the depth of an indentation or the indentation size in accordance with a predetermined rule; and a lifetime estimation unit for estimating the service life of the rolling bearing in accordance with a rule stipulated according to the relationship between the estimated buildup height of the indentation and the rate of reduction of the rolling fatigue life and a dynamic equivalent load. The lifetime estimation unit calculates the service life of the rolling bearing corresponding to the contact surface pressure.