公开(公告)号：EP3187755B1

公开(公告)日：2018-09-12

申请号：EP17154192.3

申请日：2013-07-25

申请人： NOK Corporation

发明人： MATSUI, Hiroki ,  SATO, Shiho

IPC分类号： F16J15/32 ,  F16J15/447 ,  F16J15/3264 ,  F16J15/00 ,  F16J15/3204

CPC分类号： F16J15/002 ,  F16J15/3204 ,  F16J15/3264 ,  F16J15/447 ,  F16J15/4476

摘要： Provided is a sealing device formed by combining a slinger and a lip member, the sealing device being configured so as to improve the sealing properties thereof, particularly the sealing properties against outside dust. In order to obtain such properties, the sealing device has a slinger mounted to one of two members rotating relative to each other and also has a lip member mounted to the other of the two members, the slinger being integrally provided with a cylindrical section fitted to the one member, and with a flange section extending in the radial direction, the lip member having an end face lip in close contact with the flange section in a slideable manner. The sealing device is characterized in that a bent section protruding in the axial direction toward the lip member is provided to the flange section and in that a labyrinth structure provided with a minute gap is provided between the bent section and the lip member.

公开(公告)号：EP3187755A1

公开(公告)日：2017-07-05

申请号：EP17154192.3

申请日：2013-07-25

申请人： NOK Corporation

发明人： MATSUI, Hiroki ,  SATO, Shiho

IPC分类号： F16J15/32 ,  F16J15/447 ,  F16J15/3264 ,  F16J15/00 ,  F16J15/3204

CPC分类号： F16J15/002 ,  F16J15/3204 ,  F16J15/3264 ,  F16J15/447 ,  F16J15/4476

摘要： A sealing device is composed with a slinger 11 which is installed to one member among relatively rotating two members, a lip member 21 which is installed to the other member, wherein the slinger 11 integrally has a tubular portion 12 which is fitted to the one member and a flange portion 13 which extends in a diametrical direction. Said lip member 21 is provided with an attachment ring 22, and a rubber-like elastic body 31, wherein the rubber-like elastic body 31 integrally has an attached rubber portion 32, an end face lip 33 which is supported to the attached rubber portion 32 and slidably comes into close contact with the flange portion, and a radial lip 34 which is supported to the attached rubber portion 32 slidably comes into close contact with an outer peripheral surface of the tubular portion 12. A bent portion 14 protruding in an axial direction toward the lip member 21 is provided in the flange portion 13 positioned in an inner peripheral side of the end face lip 33, wherein a second non-contacting lip 36 is provided by the rubber-like elastic body 31 of the lip member 21, so as to be positioned in an inner peripheral surface of a root portion of the end face lip 33 and to be arranged toward the bent portion and structured such that the second non-contact lip does not come into contact with said slinger 11. A labyrinth structure 41 having a minute gap is provided as a gap in an axial direction between the bent portion 14 and the second non-contacting lip 36. A lip end 35a is arranged between said bent portion 14 and the tubular portion providing a non-contact lip 35 structured such that the non-contact lip does not come into contact with the slinger 11. A labyrinth structure 42 having a minute gap is provided between the non-contact lip 35 and the slinger 11 in that the minute gap is provided in a diametrical direction between the non-contact lip 35 and the tubular portion 12, and also provided as a gap in a diametrical direction between the non-contact lip 35 and the bent portion 14, so that both gaps are continuously provided.

摘要翻译： 密封装置由安装在相对转动的两个构件中的一个构件上的抛油环11，安装到另一个构件上的唇形构件21组成，其中抛油环11一体地具有管状部分12，管状部分12装配到一个构件 以及沿直径方向延伸的凸缘部13。 所述唇部件21具备安装环22和橡胶状弹性体31，橡胶状弹性体31一体地具有安装橡胶部32，端面唇部33，该端面唇部33支撑于安装橡胶部 并且可滑动地与凸缘部分紧密接触，并且支撑到所附接的橡胶部分32的径向唇部34滑动地与管状部分12的外周表面紧密接触。沿轴向突出的弯曲部分14 在位于端面唇部33的内周侧的凸缘部13上设置有朝向唇部件21的方向，利用唇部件21的橡胶状弹性体31设置有第二非接触唇部36， 以定位在端面唇部33的根部的内周表面中并且朝向弯曲部分布置，并且被构造成使得第二非接触唇部不与所述抛油环接触 在弯曲部14和第二非接触唇36之间设置具有微小间隙的迷宫结构41作为轴向间隙。唇缘35a设置在所述弯曲部14和管状部之间， 非接触唇部35被构造成使得非接触唇部不与抛油环11接触。具有微小间隙的迷宫结构42设置在非接触唇部35和抛油环11之间，因为微小间隙是 设置在非接触唇部35与管状部12之间的径向上，并且还设置为在非接触唇部35与弯曲部14之间的径向方向上的间隙，使得两个间隙连续地设置。

公开(公告)号：EP3147544A1

公开(公告)日：2017-03-29

申请号：EP15796984.1

申请日：2015-05-15

申请人： NOK Corporation

发明人： HAMAMOTO, Kokichi ,  NAKAGAWA, Takehiro ,  NAGAHAMAYA, Hideaki ,  SATO, Shiho

IPC分类号： F16J15/32

CPC分类号： F16J15/3232 ,  F16J15/32 ,  F16J15/322 ,  F16J15/3224 ,  F16J15/3244 ,  F16J15/3252 ,  F16J15/3276

摘要： Provided is a sealing device capable of preventing turnover of a dust lip and damage to a dust lip caused by insertion of a shaft is. A bumper portion (125) made of a rubber-like elastic body and reducing an impact that the dust lip (122) receives from the shaft when the shaft is inserted into the sealing device (100) is provided on the side opposite to the sealed area (O) with respect to the dust lip (122), and an inner diameter of a tip of the bumper portion (125) on an inner peripheral side is set to be larger than an outer diameter of a part of the shaft on which a main lip (121) and the dust lip (122) slide and to be smaller than an inner diameter of a part having the largest inner diameter in a portion connecting the main lip (121) and the dust lip (122).

摘要翻译： 本发明提供一种密封装置，其能够防止由于插入轴引起的防尘唇的翻转和对防尘唇的损伤。 由橡胶状弹性体构成的缓冲器部（125），在将轴插入密封装置（100）时，减小了防尘唇（122）从轴接受的冲击， （O）相对于所述防尘唇（122）的内径，并且所述缓冲部（125）的内周侧的前端的内径被设定为大于所述轴的一部分的外径 主唇部（121）和防尘唇（122）滑动并且小于在连接主唇部（121）和防尘唇部（122）的部分中具有最大内径部分的内径。