发明授权
- 专利标题： Power-assisted steering system
- 专利标题（中）： 动力辅助转向系统
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申请号： US19419申请日： 1987-02-26
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公开(公告)号： US4765428A公开(公告)日： 1988-08-23
- 发明人: Hiroshi Kawakami , Harunori Shiratori , Koichi Sugihara , Atsushi Watanabe , Fumio Kishida
- 申请人： Hiroshi Kawakami , Harunori Shiratori , Koichi Sugihara , Atsushi Watanabe , Fumio Kishida
- 申请人地址： JPX
- 专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址： JPX
- 优先权： JPX61-40647 19860226
- 主分类号： B62D5/083
- IPC分类号： B62D5/083 ; B62D5/22 ; B62D6/02 ; B62D5/08
摘要：
A power-assisted steering system includes a changeover valve unit comprising an input shaft to be rotated by the driver's steering effort applied thereto, an output shaft operatively connected to a hydraulic power cylinder associated with the steering system, a valve assembly for controlling the supply of fluid under pressure from a hydraulic pump to the power cylinder in response to relative rotation between the input and output shafts; and a hydraulic reaction mechanism for applying a reaction force to the input shaft in accordance with a hydraulic reaction pressure applied thereto. The reaction mechanism includes a reaction fluid chamber to be constantly applied with a predetermined small quantity of fluid under pressure and to be applied with a hydraulic pressure caused by relative rotation between the input and output shafts through a throttle. The system is arranged to increase the hydraulic pressure in the reaction fluid chamber in accordance with an increase of travel speed of the vehicle.
公开/授权文献
- US6071267A Medical patient fluid management interface system and method 公开/授权日：2000-06-06
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