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    SEALING DEVICE AND SEALING STRUCTURE
    1.
    发明公开
    SEALING DEVICE AND SEALING STRUCTURE 有权
    密封元件和密封结构

    公开(公告)号：EP2827029A4

    公开(公告)日：2015-12-16

    申请号：EP13761697

    申请日：2013-03-11

    申请人： NOK CORP

    发明人： SEKI KAZUNARI ,  WATANABE KOJI ,  TOKUNAGA WATARU ,  TAKAO YUKI ,  XU FANGMAN ,  MIZUTA HIROTAKA ,  NAKASHIMA KEISUKE ,  IGAWA TAKUYA ,  YOSHIDA YUSUKE ,  WATANABE HIDEYA ,  KONDO YOSUKE

    IPC分类号： F16J15/18

    CPC分类号： F01D11/003 ,  F16J9/20 ,  F16J15/164 ,  F16J15/18 ,  F16J15/181 ,  F16J15/3208 ,  F16J15/3244 ,  F16J15/442

    摘要： A sealing device is provided which is capable of exhibiting a sealing function even in a state where fluid pressure is low or in a state where there is no fluid pressure, while suppressing sliding torque to a low level. The sealing device is characterized by including: an outer peripheral ring 2000 made of resin that is in intimate contact with a side wall surface of an annular groove 4100 at a low pressure side (L) thereof, and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted; and an inner peripheral ring 3000 made of a rubber-like elastic body that is in intimate contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively, thereby to push the outer peripheral ring 2000 toward an outer peripheral surface side thereof; wherein the outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.