| 摘要 |
<p>A novel mechanism for varying rotational speed between two rotary shafts, namely a drive shaft and a driven shaft. This mechanism is destined to replace the gear boxes which are generally used in motor vehicles. Said mechanism consists of two truncated cones (3, 5) with concave generatrices, attached to a shaft (2) secured to the engine (1) and to a shaft (6) secured to the transmission members, respectively. A roller (4) with an inverted double cone having convex generatrices is mounted on an arm (10) via a pin (9) and arranged to rotationally interconnect the cones (3, 5) by means of the adherence caused both by the choice of materials and by the bearing force exerted on the truncated cones (3, 5) by the roller (4) through a suitable pressure member (7). The roller (4) is translationally movable over the generatrices of the truncated cones (3, 5) by means of a suitable position varying system (8) for adapting the drive ratio to the various parameters which influence the operation of the whole mechanism, according to its position. The mechanism is particularly suitable for use in motor vehicles.</p> |
