초록 ▼

The application discloses a parallelogram type of drive wheel suspension system for a motorcycle and employs only a single swing arm at each side of the drive wheel, with the swing arms being torsionally interconnected through the axle structure of the wheel. An adjustable torsion bar is also disclo

The application discloses a parallelogram type of drive wheel suspension system for a motorcycle and employs only a single swing arm at each side of the drive wheel, with the swing arms being torsionally interconnected through the axle structure of the wheel. An adjustable torsion bar is also disclosed for shock absorption; and there is still further disclosed a chain slack take-up device comprising adjustable means for eccentrically shifting the position of a swing arm pivot axis between different fixed positions.

대표청구항 ▼

In a motorcycle having a frame, an engine with a driving sprocket, a driven wheel having an axle structure with a coaxial sprocket chain driven from the driving sprocket, suspension mechanism for mounting the wheel on the frame of the motorcycle, the suspension mechanism including a pair of swing ar

In a motorcycle having a frame, an engine with a driving sprocket, a driven wheel having an axle structure with a coaxial sprocket chain driven from the driving sprocket, suspension mechanism for mounting the wheel on the frame of the motorcycle, the suspension mechanism including a pair of swing arms one located at each side of the wheel, and one located in a higher position than the other, pivots for mounting the forward ends of the swing arms on the frame, one pivot being located above the axis of the driving sprocket and the other being located below the axis of the driving sprocket, and linkage interconnecting the rear ends of the swing arms through the axle structure of the wheel, said linkage including a lever at each side of the wheel, the levers being torsionally interconnected through the axle structure and one lever extended upwardly from the axle structure and being pivotally connected with one of the swing arms at a distance corresponding to the distance of the frame pivot for that arm above the axis of the driving sprocket and the other lever extended downwardly from the axle structure and being connected with the other of the swing arms at a distance corresponding to the distance of the frame pivot for that arm below the axis of the driving sprocket. Mechanism as defined in claim 8 and further including means for adjusting the distance between the axis of the frame pivot and the axis of the lever pivot for at least one of the swing arms.