Patent ID: 8517407

Claim:
A three-wheel pedal-style wheelchair comprising: two front wheels respectively arranged at two opposite sides of the wheelchair, wherein the two front wheels comprise a driving wheel led to rotate forward or backward by a user stepping and a loose wheel; and a steering wheel arranged at a side of the wheelchair for controlling steering; wherein when the wheelchair turns in a small radius of 180 degrees or to another direction, the steering wheel is considerably rotated to a direction and the driving wheel is rotated forward such that the steering wheel and the driving wheel can rotate simultaneously, wherein when the wheelchair turns to another direction, the steering wheel is considerably rotated to another direction and the driving wheel is rotated backward such that the steering wheel and the driving wheel can rotate simultaneously; further comprising a support device, a bifurcate arm arranged on the support device, a longitudinal operating rod arranged on the bifurcate arm and a lateral operating arm arranged on the bifurcate arm, wherein the longitudinal operating rod and lateral operating arm capable of rotating horizontally together connect with an operating plate such that a rotation of the longitudinal operating rod and lateral operating arm can be transmitted to the operating plate, wherein the operating plate is arranged with a pair of steel cables connecting to a back-wheel support shaft at a back-wheel support portion, wherein the back-wheel support shaft connects with the steering wheel, wherein a rotary force of the steel cables can be multiplied and transmitted to the back-wheel support shaft such that the steering wheel can be controlled to turn left or right.