公开(公告)号：US5927429A

公开(公告)日：1999-07-27

申请号：US90692

申请日：1998-06-05

申请人： Mitsutaka Sugino ,  Hiroshi Ichimura ,  Masahiro Ogawa ,  Tsuto Sasaki ,  Tetsuya Matsumoto ,  Tsutomu Tatsuishi

发明人： Mitsutaka Sugino ,  Hiroshi Ichimura ,  Masahiro Ogawa ,  Tsuto Sasaki ,  Tetsuya Matsumoto ,  Tsutomu Tatsuishi

IPC分类号： B62D3/12 ,  B62D5/04 ,  B62D5/22 ,  B62D7/22

CPC分类号： B62D5/0448 ,  B62D3/12 ,  B62D7/226

摘要： An electric power steering apparatus for applying an auxiliary torque generated in proportion to a steering torque, to a rack shaft to thereby reduce the steering torque. The rack shaft has at one end thereof rack teeth for meshing with a pinion. A rack guide mechanism is provided at the rack shaft one end oppositely from the rack teeth, for urging the rack shaft to the pinion. At the other end of the rack shaft, a screw portion and a ball screw mechanism are provided. A bush is provided for supporting an intermediate portion of the rack shaft to thereby restrict the bending of the intermediate portion beyond a predetermined value when an external force is applied to the rack shaft ends thereby bending the rack shaft intermediate portion. As a result, the vibration of the rack shaft and hence a steering wheel can be minimized.

摘要翻译： 一种用于将与转向转矩成比例地产生的辅助转矩施加到齿条轴的电动助力转向装置，从而减小转向转矩。 齿条轴的一端具有与小齿轮啮合的齿条齿。 齿条引导机构设置在齿条轴的与齿条齿相反的一端，用于将齿条轴推向小齿轮。 在齿条轴的另一端设有螺纹部和滚珠丝杠机构。 设置有用于支撑齿条轴的中间部分的衬套，从而当外部力施加到齿条轴端部时由此将中间部分的弯曲限制在预定值以上，从而弯曲齿条轴中间部分。 结果，可以使齿条轴和因此方向盘的振动最小化。