发明授权
- 专利标题: Hydraulic power steering apparatus
- 专利标题(中): 液压动力转向装置
-
申请号: US11451944申请日: 2006-06-12
-
公开(公告)号: US07428945B2公开(公告)日: 2008-09-30
- 发明人: Satoshi Aiko , Hiroki Iwano
- 申请人: Satoshi Aiko , Hiroki Iwano
- 申请人地址: JP Gyoda-shi, Saitama
- 专利权人: Showa Corporation
- 当前专利权人: Showa Corporation
- 当前专利权人地址: JP Gyoda-shi, Saitama
- 代理机构: Osha Liang LLP
- 优先权: JP2005-291760 20051004
- 主分类号: B62D5/08
- IPC分类号: B62D5/08
摘要:
A hydraulic power steering apparatus is provided with a check valve regulating a back flow of a working fluid from a power cylinder mechanism to a hydraulic pump side. A valve element slidably accommodated within a valve body of the check valve has three guide portions protruding to an outer side in a diametrical direction. A valve internal oil path in which the working fluid circulates by a pair of guide portions adjacent in a peripheral direction is formed in the valve element. The guide portion is constituted by a slidable contact portion having a sidable contact surface surface contacted with an inner peripheral surface of the valve body, and a coupling portion coupling a base body portion and the sidable contact portion. A width (W1) in a peripheral direction of the sidable contact surface is larger than a width in the peripheral direction of the coupling portion.
公开/授权文献
- US20070095599A1 Hydraulic power steering apparatus 公开/授权日:2007-05-03