公开(公告)号：US20210363945A1

公开(公告)日：2021-11-25

申请号：US17257085

申请日：2019-08-05

申请人： NOK CORPORATION

发明人： Nobuyuki EGUCHI

IPC分类号： F02M26/11 ,  F02M26/70 ,  F16J15/3212 ,  F16J15/3228 ,  F16J15/3252

摘要： A sealing device includes a metal ring 110 with a cylindrical section 111 and an inward flange section 112 disposed at one end of the cylindrical section 111. A resin seal 120 has an outer circumference side fixed to the metal ring 110 and an inner circumference side configured to slidably and closely come into contact with an outer circumference surface of the rotary shaft in a state deformed to curve toward a sealing target region. A flat spring 130 includes a plate-shaped annular metal member and has an outer circumference side fixed to the metal ring 110 and an inner circumference side configured to deform to curve along the resin seal 120 and press the inner circumference side of the resin seal 120 radially inward. A metal slide bearing 140, is sandwiched between the resin seal 120 and the inward flange section 112 and configured to slide on the outer circumference surface of the rotary shaft.

公开(公告)号：US20200300364A1

公开(公告)日：2020-09-24

申请号：US16754964

申请日：2018-09-27

申请人： NOK CORPORATION

发明人： Nobuyuki EGUCHI

IPC分类号： F16J15/3212 ,  F16J15/3204

摘要： A sealing apparatus capable of suppressing an increase in sliding resistance while sealing performance is maintained over a long period of time is provided. A leaf spring 200 is provided with, at intervals in a circumferential direction, a plurality of projections 210 which are configured to dig into a seal member 100 as, in accordance with a shaft 600 being inserted into a shaft hole of a housing 700, a radially inward portion of the seal member 100 is deformed to curve toward a fluid-to-be-sealed side and a radially inward portion of the leaf spring 200 is deformed to curve along the seal member 100.

公开(公告)号：US20190145519A1

公开(公告)日：2019-05-16

申请号：US16300344

申请日：2017-04-20

申请人： NOK CORPORATION

发明人： Nobuyuki EGUCHI

IPC分类号： F16J15/3212

摘要： In a dust seal, reinforcing rings held in a housing are provided with a seal lip, a tip of which is brought into a close and slidable contact with the outer peripheral surface of a shaft inserted through a shaft hole in the housing so as to be movable back and forth in the axial direction and a plate spring biasing the seal lip toward the outer peripheral surface of the shaft to compensate for the tension force of the seal lip. In the dust seal, in order to prevent plastic deformation of the plate spring caused by axial eccentricity and secure excellent sealability, a guide ring supported by the reinforcing rings is disposed on the axial outside of the seal lip and the shaft inserted through the inner periphery is held concentrically with the reinforcing rings.

公开(公告)号：US20130313781A1

公开(公告)日：2013-11-28

申请号：US13951231

申请日：2013-07-25

申请人： NOK CORPORATION

发明人： Nobuyuki EGUCHI

IPC分类号： F16J15/34

CPC分类号： F16J15/3488 ,  F16J15/3272 ,  F16J15/441 ,  Y10T29/49863

摘要： Sandwiching of a foreign matter between a seal ring and a housing is suppressed, and abrasion of the housing and the seal ring is suppressed. The size of the diameter of a second seal portion 3 is set to be larger than the size d2 of the diameter of an inner peripheral face 81 so that the difference in diameter size between the second seal portion 3 and an inner peripheral face 81 of a housing 80 becomes 1.0 mm or less in a state before the ring body is provided in the annular gap.

摘要翻译： 抑制密封环与壳体之间的异物的夹杂，并且抑制壳体和密封环的磨损。 第二密封部3的直径尺寸被设定为大于内周面81的直径的尺寸d2，使得第二密封部3与第二密封部3的内周面81之间的直径尺寸的差异 壳体80在环状体设置在环状间隙之前的状态下变为1.0mm以下。

公开(公告)号：US20220205538A1

公开(公告)日：2022-06-30

申请号：US17601707

申请日：2020-05-13

申请人： NOK CORPORATION

发明人： Nobuyuki EGUCHI

IPC分类号： F16J15/3212 ,  F16J15/3224

摘要： A sealing device in which damage on a resin seal by a plate spring can be suppressed is provided. The sealing device includes a metal ring 110, a resin seal 120 which is deformed on the radially inward side to be curved toward a sealed-region side and, in this state, slidably in close contact with an outer surface of a shaft 200, and a plate spring 130 which presses a radially inward side of the resin seal 120 radially inward, wherein, a bent portion 133 in which a part of a distal end of the plate spring 130 on the radially inward side is bent in advance so that the distal end of the plate spring 130 on the radially inward side is separated from the outer surface of the resin seal 120 in a state where the shaft 200 is inserted.