公开(公告)号：US5066072A

公开(公告)日：1991-11-19

申请号：US563245

申请日：1990-08-06

申请人： Kunio Yanagi ,  Mutsuro Yamakoshi ,  Akihiro Kamiyoshihara

发明人： Kunio Yanagi ,  Mutsuro Yamakoshi ,  Akihiro Kamiyoshihara

IPC分类号： B60T8/26 ,  B60T11/34

CPC分类号： B60T8/265 ,  B60T11/34

摘要： The hydraulic brake pressure control valve is provided including a valve casing mounted on a master cylinder of a hydraulic brake system. A valve piston is provided with a stepped configuration with an enlarged diameter portion and a reduced diameter portion. The valve piston is mounted slidably and longitudinally along the longitudinal bore of the valve casing. The valve piston is normally urged into a non-operating position and is shiftable longitudinally in an opposite direction from the non-operating position under the effect of a difference in the cross-sectional areas of the enlarged and reduced diameter portions, upon which hydraulic brake fluid pressure acts. The stepped valve piston is defined with a brake fluid passage extending longitudinally therein providing communication between brake fluid passages adjacent the reduced diameter portion and the enlarged diameter portion of the stepped valve piston. A fluid valve member is disposed in the fluid passage and is adapted to hold the fluid passage in an open position when the stepped valve piston is in a non-operating position and to cause the fluid valve to be opened and closed when the stepped valve piston operates in a valving manner. An arrangement is provided such that when the fluid valve is brought to either an opened or a closed position an outer wall surface associated with the valve member abuts an inner wall surface of the stepped valve piston.

摘要翻译： 液压制动压力控制阀设置有安装在液压制动系统的主缸上的阀壳。 阀活塞设置有具有扩大的直径部分和直径减小部分的台阶形状。 阀活塞沿阀壳的纵向孔可滑动和纵向安装。 阀活塞通常被推动到非操作位置，并且在扩大和减小直径部分的横截面积差异的作用下，在与非操作位置相反的方向上纵向移动，液压制动器 流体压力作用。 阶梯式阀活塞由纵向延伸的制动流体通道限定，制动流体通道邻近减径部分的制动流体通道与阶梯式阀活塞的扩大直径部分之间的连通。 流体阀构件设置在流体通道中并且适于在阶梯式阀活塞处于非操作位置时将流体通道保持在打开位置，并且当阶梯式阀活塞 以阀门方式操作。 提供一种布置，使得当流体阀被带到打开或关闭位置时，与阀构件相关联的外壁表面邻接阶梯式阀活塞的内壁表面。