发明授权
- 专利标题： Steering gear with varying transmission ratio
- 专利标题（中）： 变速传动比变化
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申请号： US383495申请日： 1973-07-30
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公开(公告)号： US4011764A公开(公告)日： 1977-03-15
- 发明人: Gunther Buck , Alfred Seifried , Albert Zettel , Hans-Christof VON Fraunberg, deceased
- 申请人： Gunther Buck , Alfred Seifried , Albert Zettel , Hans-Christof VON Fraunberg, deceased
- 申请人地址： DT Friedrichshafen
- 专利权人： Zahnradfabrik Friedrichshafen AG
- 当前专利权人： Zahnradfabrik Friedrichshafen AG
- 当前专利权人地址： DT Friedrichshafen
- 优先权： DT2237421 19720729
- 主分类号： B62D3/04
- IPC分类号： B62D3/04 ; B62D3/08 ; B62D3/10 ; F16H19/04 ; F16H55/08 ; B62D1/20
摘要：
A nut on a helically threaded steering shaft, held against rotation, carries a first set of involute teeth meshing with a second set of involute teeth on an adjoining gear sector which pivots on an axis skew to that of the shaft. The two sets of teeth have centers of curvature offset from the sector axis but aligned with that axis in a midposition in which they engage each other without play; upon a shift of the nut to either side, the tooth clearance or backlash increases progressively while the transmission ratio either increases or decreases, depending upon the relative positions of the two centers of curvature and the sector axis. In a limiting case, the radius of curvature of one set of teeth is infinite.
公开/授权文献
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