发明申请
- 专利标题： STEERING APPARATUS
- 专利标题（中）： 转向装置
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申请号： US11910018申请日： 2007-03-07
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公开(公告)号： US20090266187A1公开(公告)日： 2009-10-29
- 发明人: Jun Okada , Kazuo Chikaraishi , Masato Iwakawa , Hiroshi Kato
- 申请人： Jun Okada , Kazuo Chikaraishi , Masato Iwakawa , Hiroshi Kato
- 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
- 优先权： JP2006-062225 20060308; JP2006-148175 20060529; JP2006-177317 20060627; JP2007-001673 20070109
- 国际申请： PCT/JP2007/054477 WO 20070307
- 主分类号： B62D1/185
- IPC分类号： B62D1/185 ; F16H25/24
摘要：
Under a state of a normal temperature, a pitch B2 of a feed nut 55, 65 is formed to be slightly larger than a pitch A2 of a feed shaft screw 53, 63. Accordingly, since the screw thread of the feed nut 55, 65 is pressed to the screw thread of the feed screw shaft 53, 63 with a small interference, there is no backlash between the feed screw shaft 53, 63 and the feed nut 55, 65 so that a smooth feeding operation can be carried out. Under a state of a low temperature, the feed nut 55, 65 contracts more than the feed screw shaft 53, 63. As a result, a pitch B1 of the feed nut 55, 65 has the substantially same dimension as that of a pitch A1 of the feed screw shaft 53, 63.
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