公开(公告)号：US6105711A

公开(公告)日：2000-08-22

申请号：US172771

申请日：1998-10-15

申请人： Tatsuyoshi Maruyama ,  Susumu Kimoto ,  Takayuki Yoshida

发明人： Tatsuyoshi Maruyama ,  Susumu Kimoto ,  Takayuki Yoshida

IPC分类号： B62D5/083 ,  B62D5/065 ,  B62D6/00 ,  B62D5/06

CPC分类号： B62D5/065 ,  B62D6/00

摘要： In a power steering system of this invention, a control valve is provided for supplying working fluid to a power cylinder by an amount proportional to a steering effort supplied to an input shaft and obstructing supply of working fluid to the power cylinder when a steering wheel is in a neutral position. A conversion mechanism which includes an operation rod (operating device) capable of operating the control valve is provided for converting the steering effort supplied to the input shaft to displacement of the operation rod. A directional control valve is provided which is disposed between the control valve and the power cylinder for switching supply of working fluid from one of cylinder chambers of the power cylinder to the other according to the direction of the steering effort on the input shaft while controlling discharge of working fluid from the cylinder chambers.

摘要翻译： 在本发明的动力转向系统中，提供了一种控制阀，用于向动力缸提供与向输入轴提供的转向力成比例的量，并且当方向盘为 处于中立位置。 提供一种包括能够操作控制阀的操作杆（操作装置）的转换机构，用于将供给到输入轴的转向力转换成操作杆的位移。 提供方向控制阀，其设置在控制阀和动力缸之间，用于根据输入轴上的转向力的方向切换工作流体从动力缸的一个缸室到另一缸的供油，同时控制排放 来自气缸室的工作流体。