发明授权
- 专利标题: Electric power steering device and joint
- 专利标题(中): 电动助力转向装置及接头
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申请号: US10695456申请日: 2003-10-29
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公开(公告)号: US07228933B2公开(公告)日: 2007-06-12
- 发明人: Kaname Joushita
- 申请人: Kaname Joushita
- 申请人地址: JP Chuo-ku, Osaka
- 专利权人: Koyo Seiko Co., Ltd.
- 当前专利权人: Koyo Seiko Co., Ltd.
- 当前专利权人地址: JP Chuo-ku, Osaka
- 代理机构: McGinn IP Law Group, PLLC
- 优先权: JPP.2002-316480 20021030
- 主分类号: B62D5/04
- IPC分类号: B62D5/04
摘要:
In order to solve a problem of an electric power steering device of an automobile that the steering feeling is deteriorated by dragging the inactive electric motor if a steering member is operated at a small angle to leave an electric motor inactive while the automobile is running straight, the present invention provides a joint for jointing the rotary shaft of a steering assisting electric motor and a worm shaft of a reduction mechanism, comprising a first member rotating integrally with the rotary shaft; a second member rotating integrally with the worm shaft; and an elastic member for coupling the two members in a torque transmittable manner. The elastic member has a relatively small elastic modulus according to the state that the torsion angle between the first and second members is small. Accordingly, the structure and characteristics thereof lead to a better operationality of the steering member.
公开/授权文献
- US20050072620A1 Electric power steering device and joint 公开/授权日:2005-04-07