Stepless speed change device.

摘要

A stepless speed change device has input shaft (10) and an output shaft (15). The device includes a planetary carrier (11) provided at an inner end of the input shaft (10), a sun gear (16) provided at an inner end of the output shaft (15) to be in mesh with planet gears (23) carried on the planetary carrier (11), and a ring gear (25) in mesh with the planet gears (23) to form a planetary gear. The device further includes a driven rotor (27) rotatable about the input shaft (10) and in the form of a hollow cylinder having flanges (27AC, 27BC) at both ends and concentrically connected to the ring gear (25), a driving rotor (33) radially enclosing the driven rotor (27) and including two members (33A, 33B) connected to the input shaft (10) on both sides of the driven rotor (27), and an intermediate friction transmission ring (40) whose eccentricity is adjustable and which is interposed between the flanges of the driven rotor (27) and between the two members of the driving rotor (33) for transmitting rotating power therebetween.