公开(公告)号：US20160161002A1

公开(公告)日：2016-06-09

申请号：US15019121

申请日：2016-02-09

申请人： NOK Corporation

发明人： Makoto KAMEMURA ,  Hiroki MATSUI ,  Hideharu HYAKUTAKE ,  Tomoaki NISHIMURA

IPC分类号： F16J15/3244 ,  F16J15/3204

CPC分类号： F16J15/3244 ,  F16J15/16 ,  F16J15/3204

摘要： The invention provides a sealing device which can inhibit an external dust in an atmospheric side from intruding into a lip end, thereby inhibiting a sealing fluid leakage by trapped dust. In a sealing device inhibiting leakage of a sealing fluid in an inboard side to an atmospheric side, coming into contact with a shaft by a seal lip end and circumferentially having in an atmospheric side inclined surface of the seal lip with a plurality of screws exerting a pumping action to the sealing fluid, a three-dimensional shape for preventing the dust intrusion is provided between the screws so as to inhibit the external dust intrusion in the atmospheric side toward the lip end. The three-dimensional shape is constructed by a projection or a groove extending in a parallel direction to the lip end. The projection or the groove is connected to the screws longitudinally in both end portions.

摘要翻译： 本发明提供一种密封装置，其能够抑制大气侧的外部尘埃侵入到唇端部，从而抑制密封流体被捕获的灰尘泄漏。 在密封装置中，防止密封流体在内侧泄漏到大气侧，通过密封唇端与轴接触并且周向地在密封唇的大气侧倾斜表面中具有多个螺钉，该多个螺钉施加 对密封流体进行抽吸动作，在螺钉之间设置防止灰尘侵入的三维形状，以防止大气侧的外部灰尘侵入唇端。 三维形状由沿唇缘端部的平行方向延伸的突起或槽构成。 突起或槽在两端部纵向连接螺钉。

公开(公告)号：US20170307086A1

公开(公告)日：2017-10-26

申请号：US15526112

申请日：2015-11-06

申请人： NOK CORPORATION

发明人： Shinya OMOTO ,  Toru NAKASHIMA ,  Hiroki MATSUI ,  Yusuke KAMIYA

IPC分类号： F16J15/3204 ,  F16J15/447 ,  F16F15/126

CPC分类号： F16J15/3204 ,  F16F15/126 ,  F16F15/165 ,  F16F2230/30 ,  F16J15/164 ,  F16J15/3232 ,  F16J15/3264 ,  F16J15/447

摘要： A sealing structure that allows for formation of a side lip, as well as a labyrinth structure between an oil seal and a torsional vibration damper, even when a reinforcing ring has a short inward flange part. The sealing body 120 includes a side lip 124 extending from near a distal end of an inward flange part 112 of the reinforcing ring 110 radially inward and further toward an air side (A) than a dust lip 122 to a position not as far as the outer circumferential surface of a tubular part 210. The tubular part 210 includes a small-diameter part 211 on which the dust lip 122 slides, and a large-diameter part 212 on the air side (A). The large-diameter part 212 has a tapered surface 212a formed on an outer circumferential surface thereof that reduces in diameter toward the air side (A). An annular gap S is formed between this tapered surface 212a and an inner circumferential surface of the side lip 124.

公开(公告)号：US20160252181A1

公开(公告)日：2016-09-01

申请号：US15027819

申请日：2014-10-03

申请人： NOK CORPORATION

发明人： Hideharu HYAKUTAKE ,  Tomoaki NISHIMURA ,  Hiroki MATSUI ,  Yuki SATO

IPC分类号： F16J15/3244 ,  F16J15/3232 ,  F16J15/3216

CPC分类号： F16J15/3244 ,  F16J15/3216 ,  F16J15/3232

摘要： The purpose of the present invention is to provide a sealing device which has forward and reverse screw threads exhibiting a fluid-pumping action provided on a sliding portion of a seal lip, such that the pumping action is less susceptible to deterioration even with increasing wear on the screw threads and such that leakage of droplets from the screw threads is minimized. To achieve this, the forward and reverse screw threads which exhibit a pumping action on sealing fluid are arranged in a circle on the air-side lateral surface of the sliding portion of the seal lip. The forward and reverse screw threads each have a shape gradually increasing in thread height from the leading end of the lip to the air side. The forward screw threads and/or reverse screw threads are provided with seal protrusions for preventing leakage of droplets.

摘要翻译： 本发明的目的是提供一种密封装置，该密封装置具有呈现在密封唇的滑动部分上的流体泵送作用的正向和反向螺纹，使得即使随着磨损增加，泵送作用也不易劣化 螺纹并使得液滴从螺纹的泄漏最小化。 为了实现这一点，在密封唇的滑动部分的空气侧侧表面上以圆形布置对密封流体产生泵送作用的正向和反向螺纹， 前进和后退螺纹各自具有从唇缘的前端到空气侧的螺纹高度逐渐增加的形状。 前螺纹和/或反向螺纹具有用于防止液滴泄漏的密封突起。

公开(公告)号：US20200011423A1

公开(公告)日：2020-01-09

申请号：US16576891

申请日：2019-09-20

申请人： NOK CORPORATION

发明人： Sosuke ITO ,  Masahiko INOUE ,  Yuya SAKANO ,  Hiroki MATSUI ,  Kokichi HAMAMOTO ,  Takehiro NAKAGAWA ,  Hisato YONAI

IPC分类号： F16J15/3204 ,  F16J15/3244

摘要： A sealing apparatus 1 includes a sealing apparatus body 2 and a slinger 3. The sealing apparatus body 2 includes an annular reinforcing ring 10 and an annular elastic body portion 20 formed of an elastic body mounted on the reinforcing ring 10. The slinger 3 includes a flange portion 31 which is an annular portion extending toward an outer peripheral side. The elastic body portion 20 includes an end-face lip 21 which is an annular lip extending toward an inner side and contacts the flange portion 31 from an outer side. At least one groove 33 is formed on an outer side of the flange portion 31 of the slinger 3, on a surface of the end-face lip 21 on an inner peripheral side, a plurality of radial projections 23 are formed side by side in a circumferential direction, and at least one circumferential projection 24 is formed.

公开(公告)号：US20190113080A1

公开(公告)日：2019-04-18

申请号：US16194716

申请日：2018-11-19

申请人： NOK CORPORATION

发明人： Yusuke KAMIYA ,  Hiroki MATSUI ,  Shinya OMOTO ,  Toru NAKASHIMA ,  Hirotaka MIZUTA

IPC分类号： F16C33/78 ,  F16C19/18 ,  F16C33/80 ,  F16J15/3232 ,  F16J15/447

摘要： A sealing structure with an annular pocket and a sealing device includes an annular pocket and a sealing device. The pocket is provided in a slinger, and the sealing device is attached to a housing of a differential device. The slinger is arranged on an output shaft of the differential device. A recessed part of the pocket is defined by an inner peripheral tubular portion, an outer peripheral tubular portion and a bottom portion of the slinger. The outer peripheral surface of the pocket is formed in the outer peripheral tubular portion of the slinger. The outer peripheral surface of the pocket increases in diameter toward the outside in an axis direction. A side lip of the sealing device extends in the outward direction, and an annular gap is formed between the side lip and the pocket.

公开(公告)号：US20180223949A1

公开(公告)日：2018-08-09

申请号：US15504478

申请日：2015-08-07

申请人： NOK CORPORATION

发明人： Yusuke KAMIYA ,  Hiroki MATSUI ,  Shinya OMOTO ,  Toru NAKASHIMA

IPC分类号： F16F15/16 ,  F16F15/126 ,  F16J15/3236 ,  F16J15/3264

CPC分类号： F16F15/165 ,  F16F15/126 ,  F16F2230/30 ,  F16J15/32 ,  F16J15/3236 ,  F16J15/3264

摘要： A sealing structure allows for formation of a labyrinth structure between an oil seal and a torsional vibration damper even when the oil seal does not include a side lip. The oil seal 100 includes an oil lip 121 provided such as to be slidable on an outer circumferential surface of a tubular part 210, and a dust lip 122 provided further on an air side (A) than the oil lip 121 and slidable on the outer circumferential surface of the tubular part 210. An annular member 250 is further provided, which is fixed to the outer circumferential surface of the tubular part 210 further on the air side (A) than the dust lip 122 and covering an outer circumferential surface of the dust lip 122 such that there is a gap between the annular member 250 itself and the outer circumferential surface of the dust lip 122.

公开(公告)号：US20170234398A1

公开(公告)日：2017-08-17

申请号：US15504533

申请日：2015-08-07

申请人： NOK CORPORATION

发明人： Yusuke KAMIYA ,  Hiroki MATSUI ,  Shinya OMOTO ,  Toru NAKASHIMA

IPC分类号： F16F15/126 ,  F16J15/3208 ,  F16J15/3232

CPC分类号： F16F15/126 ,  F16J15/32 ,  F16J15/3208 ,  F16J15/3232

摘要： A sealing structure allows for formation of a side lip, as well as a labyrinth structure between an oil seal and a torsional vibration damper, even when a reinforcing ring has a short inward flange part. The sealing body 120 includes a side lip 124 extending from near a distal end of an inward flange part 112 radially inward and further toward an air side (A) than a dust lip 122 to a position not as far as the outer circumferential surface of a tubular part 210. An annular member 250 is further provided, which is fixed to the outer circumferential surface of the tubular part 210 further on the air side (A) than the side lip 124 and covering an outer circumferential surface of the side lip 124 such that there is a gap between the annular member 250 itself and the outer circumferential surface of the side lip 124.

公开(公告)号：US20220243823A1

公开(公告)日：2022-08-04

申请号：US17262881

申请日：2019-10-17

申请人： NOK CORPORATION

发明人： Hiroki MATSUI ,  Kenichi KIKUCHI ,  Yuto MANAKA ,  Saki ITO

IPC分类号： F16J15/3264 ,  F16J15/34

摘要： A sealing device seals a gap between a housing and a rotating body disposed in a hole of the housing and separates an internal space of the housing from an atmosphere side. The sealing device includes a stationary sealing member and a rotational sealing member. The rotational sealing member includes a hollow cylindrical portion into which a cylindrical portion of the rotating body is to be interference fitted, and a flange portion disposed closer to an internal space side than the hollow cylindrical portion. The stationary sealing member includes a mounted hollow cylindrical portion that is to be mounted to the housing, and a seal lip being to be brought into slidable contact with an outer peripheral surface of the hollow cylindrical portion of the rotational sealing member. The rotational sealing member further includes an auxiliary lip mounted to the flange portion, the auxiliary lip being to be brought into slidable contact with an inner peripheral surface of the mounted hollow cylindrical portion.

公开(公告)号：US20190277403A1

公开(公告)日：2019-09-12

申请号：US16423250

申请日：2019-05-28

申请人： NOK CORPORATION

发明人： Yuya SAKANO ,  Hiroki MATSUI ,  Kokichi HAMAMOTO ,  Takehiro NAKAGAWA ,  Hisato YONAI ,  Masahiko INOUE

IPC分类号： F16J15/3244 ,  F16J15/3204

摘要： A sealing apparatus which seals an annular gap of a hole into which a shaft is to be inserted, includes a sealing apparatus body to be fitted into the hole, and a slinger to be attached to the shaft. The sealing apparatus body includes a reinforcing ring annular around an axis line, and an elastic body portion attached to the reinforcing ring and annular around the axis line. The slinger includes a flange portion extending toward an outer periphery side and annular around the axis line. The elastic body portion includes an end-face lip extending on one side in an axis line direction, contacting the flange portion from another side in the axis line direction, and annular around the axis line. At least one groove is formed on the other side of the flange portion, and a plurality of projections are formed side by side in a circumferential direction on an inner periphery surface of the end-face lip extending in a spiral manner in a rotation direction of the shaft from the other side to the one side and being formed on an inner periphery side of a slinger contact portion of the end-face lip.