发明申请
- 专利标题: ELECTRIC POWER STEERING SYSTEM
- 专利标题(中): 电力转向系统
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申请号: US13283916申请日: 2011-10-28
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公开(公告)号: US20120111657A1公开(公告)日: 2012-05-10
- 发明人: Jun HAMAKITA , Hirotsugu KUSANO
- 申请人: Jun HAMAKITA , Hirotsugu KUSANO
- 申请人地址: JP Osaka
- 专利权人: JTEKT CORPORATION
- 当前专利权人: JTEKT CORPORATION
- 当前专利权人地址: JP Osaka
- 优先权: JP2010-251068 20101109
- 主分类号: B62D5/04
- IPC分类号: B62D5/04
摘要:
A curvature radius of a raceway groove of an inner ring of a first bearing supporting a first end portion of a worm shaft and a curvature radius of a raceway groove of an outer ring of the first bearing are larger than 50% of a diameter of each rolling element of the first bearing, whereby the worm shaft is pivotable about the first end portion. Internal clearances in the first bearing are eliminated because the first bearing is pressed in a radial direction by a pressing member. When the worm shaft vibrates relative to a housing in an axial direction, paired second elastic members and damp and absorb the vibration.
公开/授权文献
- US08459402B2 Electric power steering system 公开/授权日:2013-06-11