专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2004065827A1 SEALS 审中-公开
公开(公告)号：WO2004065827A1
公开(公告)日：2004-08-05
申请号：PCT/GB2004/000128
申请日：2004-01-14
申请人： AUTOMOTIVE PRODUCTS FRANCE S.A. , LEGER, Frederick , BUCKMASTER, Adrian, Charles , SHEERIN, Anthony, Mark
发明人： LEGER, Frederick , BUCKMASTER, Adrian, Charles , SHEERIN, Anthony, Mark
IPC分类号： F16J15/16
CPC分类号： F16J15/166 , F16J15/3236
摘要： An annular seal (39) for use in a hydraulic cylinder in which a piston (12) moves along a bore (13) in a cylinder body defining a hydraulic working chamber (16) ahead of the piston, the seal having a forward lip portion (40) exposed to the hydraulic pressure in the working chamber which seals the working chamber against egress of fluid from the working chamber around the piston, and a rearward lobe portion (41) which has a rear face which seats against a support surface (12a) on the piston or body, the lobe portion sealing against the ingress of air or other contaminants around the piston into the working chamber. In the unpressurised condition, in the vicinity of the lobe portion the rear face (42) of the seal (39) slopes (9) away from the support face (12a) towards the working chamber (16) so that when the seal is pressurised the rear face is not forced past the support surface into the clearance (x) between the piston (12) and bore (13). The seal (39, 52) may be of the twin lip and lobe type used to seal an annular piston to inner and outer walls of an annular bore or to seal a cylindrical piston within a cylindrical bore or of the single lip and lobe type (52, 58, 59) in which the seal is held captive in the walls of an annular or cylindrical bore to seal against a moving annular or cylindrical piston or is held in a recess in a moving piston for sealing with a mating bore.
摘要翻译：一种在液压缸中使用的环形密封件（39），其中活塞（12）沿着限定了活塞前方的液压工作室（16）的缸体中的孔（13）移动，所述密封件具有前唇部分（40），其暴露于工作室中的液压压力，其密封工作室，防止流体从活塞周围的工作室流出;以及后凸起部分（41），其后表面抵靠支撑表面（12a ）在活塞或主体上，凸起部分密封住活塞周围的空气或其它污染物进入工作室。在非加压状态下，在凸起部分附近，密封件39的后表面42朝着工作室16离开支撑面12a而使斜面9从密封件加压后表面不被迫通过支撑表面进入活塞（12）和孔（13）之间的间隙（x）中。密封件（39,52）可以是用于将环形活塞密封到环形孔的内壁和外壁的双唇和凸角型，或者将圆柱形活塞密封在圆柱形孔内或单唇和叶型（ 52,58,59），其中密封件被保持在环形或圆柱形孔的壁中以密封移动的环形或圆柱形活塞，或者保持在活动活塞中的凹部中以与配合孔密封。

IPRDB

热门服务

关于我们

友情链接

联系方式