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1. 发明授权

US06651429B2 Master cylinder 失效
标题翻译：主缸
公开(公告)号：US06651429B2
公开(公告)日：2003-11-25
申请号：US09928322
申请日：2001-08-13
申请人： Ichiro Ishiwata , Kazuhisa Taira , Fujio Miyamoto , Yukihiro Honda
发明人： Ichiro Ishiwata , Kazuhisa Taira , Fujio Miyamoto , Yukihiro Honda
IPC分类号： B60T11228
CPC分类号： B60T11/232 , B60T11/20 , B60T11/236
摘要： A master cylinder including a cylinder body having a cylindrical bore and an opening in the circumferential wall for a relief port communicating with the interior of hydraulic reservoir. A piston is slidably inserted into the cylindrical bore to form a hydraulic pressure generating chamber in the cylindrical bore. A cup seal is provided with an inner circumferential lip portion contacting with the piston, an outer circumferential lip portion slidably contacting with the inner circumferential wall of the cylindrical bore, and a base portion connecting the lip portions, which are so arranged as to face to the hydraulic pressure generating chamber. The cup seal cuts the communication between the hydraulic pressure generating chamber and the hydraulic reservoir through the relief port when the top end of the outer circumferential lip portion passes by the relief port. The improvement resides in means provided for rotating the cup seal relative to the cylindrical bore with movement of the piston at portions of the cup seal except those portions facing to the inner wall of the cylindrical bore.
摘要翻译：一种主缸，包括具有圆柱形孔的缸体和在周向壁中的用于与液压储存器内部连通的释放口的开口。活塞可滑动地插入圆柱形孔中，以在圆柱孔中形成液压产生室。杯形密封件设置有与活塞接触的内周唇部，与圆筒孔的内周壁可滑动接触的外周唇部，以及连接唇部的基部，液压发生室。当外周唇缘部分的顶端通过排放口时，杯形密封件通过排泄口切断液压产生室和液压容器之间的连通。改进在于提供用于相对于圆柱形孔旋转杯形密封件的装置，其中活塞在杯形密封件的部分处移动，除了面向圆柱形孔的内壁的那些部分之外。

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