公开(公告)号：US20160116066A1

公开(公告)日：2016-04-28

申请号：US14895100

申请日：2014-05-26

Applicant: NOK CORPORATION

Inventor： Koji WATANABE ,  Kazunari SEKI

IPC: F16J15/16

CPC classification number: F16J15/164 ,  F16J9/14 ,  F16J15/441 ,  F16J15/443

Abstract: A seal ring (100) makes contact with a low-pressure-side (L) side wall surface of an annular groove (510) and slides against an inner circumferential surface of a shaft hole of a housing (600) through which a shaft (500) is inserted. The seal ring includes a pair of concave portions (130) extending in a circumferential direction on an outer surface, wherein a distance between a side surface on one side of a convex portion (120) that is disposed between the pair of concave portions (130) and a side surface on another side of the seal ring (100), and a distance between a side surface on another side of the convex portion (120) and a side surface on one side of the seal ring (100) are set to be shorter than a distance between an inner circumferential surface of the seal ring and an outer circumferential surface of the convex portion (120).

Abstract translation: 密封环（100）与环状槽（510）的低压侧（L）侧壁面接触，并抵靠壳体（600）的轴孔的内周面滑动，轴 500）。 密封环包括在外表面上沿圆周方向延伸的一对凹部（130），其中设置在一对凹部（130）之间的凸部（120）的一侧的侧表面之间的距离 ）和所述密封环（100）的另一侧的侧面，并且所述凸部（120）的另一侧的侧面与所述密封环（100）的一侧的侧面之间的距离设定为 比密封环的内周面和凸部（120）的外周面之间的距离短。

公开(公告)号：US20150362074A1

公开(公告)日：2015-12-17

申请号：US14764858

申请日：2014-02-19

Applicant: NOK CORPORATION

Inventor： Kazunari SEKI ,  Koji WATANABE

IPC: F16J15/24 ,  F16J15/16

CPC classification number: F16J15/24 ,  F16J15/164 ,  F16J15/441

Abstract: Provided is a sealing device that is capable of exhibiting a sealing function even in a condition in which a fluid pressure is low while suppressing its sliding torque. A sealing device 100 is characterized by including: a seal ring 200 made of resin which is in close contact with a side wall surface on a low pressure side of an annular groove 410, and slides against an inner peripheral surface of a shaft hole in a housing 500 through which a shaft 400 is inserted; and a metal spring 300 which is provided along an inner peripheral surface of the seal ring 200 in a state in which a gap is formed between the metal spring 300 and a groove bottom surface of the annular groove 410, and presses the seal ring 200 toward an outer peripheral surface side, wherein a concave portion 220 is formed on an outer peripheral surface of the seal ring 200 which extends from an end portion on a high pressure side of the outer peripheral surface to a position which does not reach an end portion on a low pressure side of the outer peripheral surface, and introduces a fluid from the high pressure side.

Abstract translation: 提供即使在流体压力低的条件下也能够抑制其滑动转矩的情况下也能够表现出密封功能的密封装置。 密封装置100的特征在于包括：与环状槽410的低压侧的侧壁面紧密接触的由树脂制成的密封环200，并且在密封环200的轴孔的内周面上滑动 壳体500，轴400穿过该壳体500插入; 以及在金属弹簧300与环状槽410的槽底面之间形成间隙的状态下沿着密封环200的内周面设置的金属弹簧300，将密封环200朝向 外周面侧，在密封环200的外周面上形成凹部220，该外周面从外周面的高压侧的端部延伸到不到达端部的位置 外周面的低压侧，从高压侧引入流体。

公开(公告)号：US20170343110A1

公开(公告)日：2017-11-30

申请号：US15680190

申请日：2017-08-17

Applicant: NOK CORPORATION

Inventor： Kazunari SEKI ,  Koji WATANABE

IPC: F16J15/24 ,  F16J15/44 ,  F16J15/16

CPC classification number: F16J15/24 ,  F16J15/164 ,  F16J15/441

Abstract: A sealing device includes a seal ring 200 made of resin which is in close contact with a side wall surface on a low pressure side of an annular groove 410, and slides against an inner peripheral surface of a shaft hole in a housing 500 through which a shaft 400 is inserted. A metal spring 300 presses the seal ring 200 toward an outer peripheral surface side, wherein a concave portion 220 is formed on an outer peripheral surface of the seal ring 200 which extends from an end portion on a high pressure side of the outer peripheral surface to a position which does not reach an end portion on a low pressure side of the outer peripheral surface, and introduces a fluid from the high pressure side.

公开(公告)号：US20180010692A1

公开(公告)日：2018-01-11

申请号：US15543039

申请日：2015-06-18

Applicant: NOK CORPORATION

Inventor： Kazunari SEKI

IPC: F16J15/34 ,  F16H57/029

CPC classification number: F16J15/3496 ,  B29C43/02 ,  B29C51/08 ,  F16H57/029 ,  F16J9/20 ,  F16J15/441

Abstract: A seal ring and a sealing structure that reduce the deviation of the central axis of the seal ring from the central axis of a shaft thereby preventing the seal ring from abutting against the tip end of a housing in the operation of inserting the shaft in the housing. The seal ring includes a thin part 100A provided in a range less than 180° with respect to a circumferential direction and a thick part 100B, which is configured to protrude inward in the radial direction from an inner peripheral surface of the thin part 100A, the thin part 100A has an abutment joint part 110, and the thick part 100B has, at respective ends of both side surfaces on an inner peripheral surface side thereof, a concave part 120 over an entire range thereof to form a gap between the ends of the both side surfaces and corner parts at both ends of a groove bottom of the annular groove.