Patent ID: 7878292

Claim:
A motorcycle steering system having a front wheel and a rear wheel, said system comprising: a steering conversion mechanism configured to convert a rotary input to an input shaft into an arbitrary amount of rotation or an arbitrary turning force and output the arbitrary amount of rotation and/or the arbitrary turning force from an output shaft; a steering handlebar configured to be coupled to the input shaft; a support portion configured to be coupled to the output shaft and to support the front wheel of the motorcycle; and a housing welded to a front portion of a gusset joining together a motorcycle body frame of the motorcycle and an under frame at a front end portion of the motorcycle, and configured to accommodate the steering conversion mechanism, wherein the steering conversion mechanism is mounted to the front end portion the motorcycle body frame integrally with the housing, and wherein the steering conversion mechanism includes at least one of a variable ratio steering mechanism configured to convert an input steering angle to the input shaft caused by the steering handlebar into an arbitrary output steering angle and transmit the input steering angle to the front wheel, and a power assist mechanism configured to supply an arbitrary supplementary force to an input operation to the steering handlebar.