| 摘要 |
1473385 Toothed gearing J H BREMS 26 April 1974 [30 April 1973] 18271/74 Heading F2Q Displacement of a rack 44 is related to the angle of rotation of a driving shaft 18 in a non- uniform manner and is effected by mechanism comprising a crank 20 on which is rotatably mounted an eccentric gear 34 which meshes the rack 44, rotation of the gear 34 in a direction opposite to the direction of rotation of the crank being effected by the engagement of a planet pinion 26, integral with the body 32 of gear 34, with a fixed annulus 16. The pitch diameter of the planet pinion 26 is one-half that of the fixed annulus 16 and the axis of the gear 34 passes through the pitch circle of the pinion 26. Gear 34 is located with respect to its body 32 by a spring-pressed detent roller 38 engaging a notch 36 which allows decoupling on overload. In a modification, an eccentric gear 74 meshes a rack 60 and is rotatably mounted on a crank 72, which rotates in one direction, whilst being rotated in the opposite direction through a drive shaft 84 and universal joints 82, 86. |
