Patent ID: 8147369

Claim:
A traction-drive type driving-force transmission mechanism comprising: an output shaft; a sun roller having a first central axis and being rotatable about said first central axis; a plurality of shaft members having respective second central axes and being disposed respectively on corresponding ones of a plurality of secondary axes each inclined relative to said first central axis by a predetermined angle, in such a manner that each of said second central axes is aligned with said corresponding secondary axis; a plate member which holds each of said shaft members in said posture inclined by said predetermined angle; a plurality of speed-reduction rollers each disposed along an outer peripheral surface of said sun roller while being supported by a corresponding one of said shaft members; and a pressing member coupled to said output shaft and contacting each of the speed reduction rollers for directly pressing each of said speed-reduction rollers against the outer peripheral surface of said sun roller to allow a driving force to be transmitted through means of a traction force between said sun roller and each of said speed-reduction rollers.