发明授权
- 专利标题： Electric power steering apparatus
- 专利标题（中）： 电动助力转向装置
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申请号： US10767611申请日： 2004-01-30
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公开(公告)号： US07240763B2公开(公告)日： 2007-07-10
- 发明人: Osamu Tatewaki , Hiroshi Eda , Toshihiro Fukuda , Osamu Saito , Jun Okada
- 申请人： Osamu Tatewaki , Hiroshi Eda , Toshihiro Fukuda , Osamu Saito , Jun Okada
- 申请人地址： JP Tokyo
- 专利权人： NSK Ltd.
- 当前专利权人： NSK Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Miles & Stockbridge PC
- 优先权： JP2001-194837 20010627; JP2002-032774 20020208; JP2002-065602 20020311
- 主分类号： B62D5/04
- IPC分类号： B62D5/04
摘要：
An electric power steering apparatus comprises a ball nut rotationally driven by an electric motor through a gear train and having a female thread groove formed in the inner periphery thereof, a rack shaft disposed through the ball nut on the axis thereof and having a male thread groove so formed in its outer periphery as to face to the female thread groove, a ball screw mechanism having a number of circulation balls interposed between the female thread groove and the male thread groove, and a housing for holding the ball nut rotatably through the bearing. An elastic member is interposed between the housing and the ball nut in order to permit the ball nut to make a predetermined displacement.
公开/授权文献
- US20040182639A1 Electric power steering apparatus 公开/授权日：2004-09-23
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