Patent ID: 11952049
Assignee: nan
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 7:
8. A steering system for a vehicle having a frame with respective frame sides and suspended above solid front and rear axles, the steering system comprising:
a rack and pinion gearset configured with a slow steering ratio;
an augmented chain and sprocket assembly comprising
an augmented chain and sprocket assembly housing,
a large sprocket having teeth and housed within the augmented chain and sprocket housing,
a small sprocket having teeth and housed within the augmented chain and sprocket housing,
a chain having chain links rotationally coupling the large sprocket and small sprocket, wherein the chain is housed within the augmented chain and sprocket housing,
an input shaft having serrations and adapted to the large sprocket, wherein the input shaft is partially housed within the augmented chain and sprocket housing,
an output shaft having serrations and adapted to the small sprocket, wherein the output shaft is partially housed within the augmented chain and sprocket housing, and
an electric motor having a rotor and a cup-shaped gear with teeth and housed within the augmented chain and sprocket housing, and
wherein the input shaft and output shaft protrude through opposite sides of the augmented chain and sprocket housing;

a coupler shaft having a front and back end, wherein the front end of the coupler shaft is connected to an electric assist motor box, and said back end is connected to the augmented chain and sprocket assembly housing; a steering shaft having a front and back end, wherein the back end of the steering shaft is connected to an output shaft of the electric motor assist box, and the front end of the steering shaft is connected to the rack and pinion gearset; a draglink having a first and second end, the second end connected to a passenger-side steering knuckle; a tie rod having a first and second end, the first end is pivotally connected to the passenger-side steering knuckle while the second end is pivotally connected to a driver-side steering knuckle; and
wherein a turning of a steering wheel by a driver defines a steering input, the steering input refers to a rotational torque, the steering input is transmitted from the steering wheel through the augmented chain and sprocket assembly, the coupler shaft, the steering shaft, the rack and pinion gear set, the draglink, and the tie rod to a pair of front wheels thereby causing the pair of front wheels to turn.