公开(公告)号：EP2194299A1

公开(公告)日：2010-06-09

申请号：EP08777979.9

申请日：2008-07-09

申请人： NOK Corporation

发明人： MIURA, Daisuke ,  NAKAGAWA, Takehiro

IPC分类号： F16J15/32

CPC分类号： F16J15/324 ,  F16J15/3244

摘要： A sealing device in which durability of a seal lip is enhanced by enhancing the function of supply of lubricant to a seal lip slide portion. The sealing device is attached to the inner periphery of a shaft hole in a housing and comes into intimate slidable contact with the peripheral surface of a shaft inserted in the shaft hole. The sealing device has a sealing device body and an oil supply member. The sealing device body integrally has a tubular fixation portion fixed to the inner periphery of the shaft hole in the housing and also integrally has a seal lip coming into intimate slidable contact with the peripheral surface of the shaft. The oil supply member integrally has a tubular fitting portion fitted to the inner peripheral side of the fixation portion and also integrally has a flange-like oil supply portion provided so as to extend radially inward from the fitting portion. The oil supply portion is placed closer to the sealing fluid side than the tip of the seal lip. A radially inwardly extending protrusion is provided at the inner peripheral edge of the oil supply portion. An oil transmission groove is provided in the protrusion so as to extend toward its tip.

摘要翻译： 本发明提供一种密封装置，其通过提高向密封唇滑动部供给润滑油的功能而提高密封唇的耐久性。 密封装置安装在壳体的轴孔的内周面上，并与插入轴孔内的轴的周面紧密滑动接触。 密封装置具有密封装置主体和供油构件。 密封装置本体一体地具有固定到壳体中的轴孔的内周的管状固定部分，并且还一体地具有密封唇，密封唇与轴的周边表面紧密滑动接触。 供油部件一体地具有嵌合于固定部的内周侧的筒状的嵌合部，并且一体地具有从嵌合部向径向内侧延伸设置的凸缘状的供油部。 供油部分比密封唇的末端更靠近密封流体侧。 径向向内延伸的突出部设置在供油部的内周边缘处。 在突起中设置有油传输槽以朝向其末端延伸。