公开(公告)号：EP2189689B1

公开(公告)日：2014-11-12

申请号：EP07806644.6

申请日：2007-09-04

申请人： Arai Seisakusho Co., Ltd

发明人： SYAMOTO, Yoshihiro

IPC分类号： F16J15/32

CPC分类号： F16J15/3244

公开(公告)号：EP2189689A1

公开(公告)日：2010-05-26

申请号：EP07806644.6

申请日：2007-09-04

申请人： Arai Seisakusho Co., Ltd

发明人： SYAMOTO, Yoshihiro

IPC分类号： F16J15/32

CPC分类号： F16J15/3244

摘要： [Configuration] In a hermetic sealing device provided with a thread on an atmosphere side sliding surface of a sealing lip that is in sliding contact with a rotating shaft, the atmosphere side sliding surface of the sealing lip is formed into a large curve that passes a sealing lip tip and recedes from a surface of a component with which the lip is in sliding contact towards the atmosphere side. A thread with a triangular cross-section is formed connecting the lip tip to a projecting section of a predetermined height formed at a required position distant from the lip tip. A ridge line of a thread peak of the thread is formed linearly. A thread is formed on the atmosphere side sliding surface, configured such that the height of the thread peak gradually increases away from the lip tip.
[Effect] Because the ridge line of the thread peak is linear, a space between the shaft and the sealing lip can be maintained. As a result, risk of infiltrating dust being guided to a contacting section of the sealing lip tip can be suppressed, and leakage caused by dust becoming caught in the sealing lip can be prevented.

摘要翻译： [结构]在与旋转轴滑动接触的密封唇的大气侧滑动面上具有螺纹的气密密封装置中，密封唇的气氛侧滑动面形成为大曲率， 密封唇尖并从唇部与大气侧滑动接触的部件的表面后退。 形成具有三角形横截面的螺纹，其将唇尖连接到形成在远离唇尖的所需位置处的预定高度的突出部分。 线的螺纹峰的脊线线性地形成。 螺纹形成在大气侧滑动面上，构成为使螺纹峰的高度从唇部尖端逐渐增加。 [效果]由于螺纹峰的脊线是线性的，因此可以保持轴和密封唇之间的空间。 结果，可以抑制将密封剂引导到密封唇尖端的接触部分的风险，并且可以防止由于粉尘被密封在唇缘中而引起的泄漏。