| 摘要 |
<p>1. Rack and pinion assembly, said rack (2) and said pinion (1) having each an axis of symmetry (7,8) perpendicular to each other in their transversal section , said assembly further comprising, within a rigid body means for guiding said rack (2) and for maintaining engagement between said rack (2) and said pinion (1), characterized in that the rack (2) is located in a chamber (6) provided within said body (5) together with said means, said chamber (6) having a partly cylindrical inner wall (9), the axis of symmetry of said chamber (6) being merged into said rack axis (8) ; in that said rack (2) includes a front face engaged with said pinion (1) and a rear face opposite the front face, this rear face comprising two lateral tapered sides (15) converging toward said rack axis (8) and an extending rib (13) having flat lateral sides (17) parallel to said rack axis ; in that said means includes a pair of members (31,32), disposed symmetrically with respect to the rack axis (8), each member (31,32) being rotatorily slideable along said cylindrical inner wall (9) each of said members engaging one of said lateral tapered sides (15) on about one point and one of the lateral flat sides (17) on about one point, and further includes a resilient means (4) located between ends of said members (31,32) urging said ends in opposite directions in such a way that said members (31,32) bearing on the rib (13) generate an anti-ungearing force applied to the lateral tapered sides (15) of said rack (2). <IMAGE></p> |
