Geared infinitely variable transmission

摘要

A geared infinitely variable transmission (GIVT) to provide a continuous output-to-input speed ratio from zero to a certain value is designed, and its working principle is illustrated. Crank-slider systems are used in the GIVT; the output-to-input speed ratio is changed with the crank length. Racks and pinions, controlled by planetary gear sets, are used to change the crank length when the cranks are rotating. One-way bearings rectify the output speeds from different crank-slider systems to obtain the output speed of the GIVT. Noncircular gears are used to minimize variations since the crank-slider systems can introduce variations of the instantaneous speed ratio. A direction control system is provided using planetary gear sets.

主权项

1. A geared infinitely-variable transmission comprising: a rotational input member, and a rotational output member; a crank-slider system associated with the rotational input member to convert an input motion of a crank to a slider motion; a driver associated with the crank-slider system to convert the slider motion to an output rotation of an output gear associated with the rotational output member,
wherein the driver is a rack-pinion meshing, further comprising a noncircular gear coupled to the rotational input member, and wherein the crank-slider system comprises adjustable length cranks that are adjusted by racks and pinions.