| 摘要 |
A variable ratio sprocket assembly for providing improved transition between gears and eliminating derailing. The variable ratio sprocket assembly includes an axle, a bicycle wheel hub coupled to a rear wheel of the bicycle and designed to rotatably receive rotational force from a receiver, a receiver including a first diameter coupled to the bicycle wheel hub, a converter with a second diameter substantially greater than the diameter of the receiver slideably engages the receiver to provide a plurality of gear ratios with respect to the receiver, a driver includes a third diameter substantially greater than the second diameter of the converter and is slideably engaged by the converter such that rotating the driver in a first direction rotates the converter in a first direction which in turn rotates the receiver in a first direction which in turn rotates the rear bicycle wheel, and a sprocket coupled to an exterior surface of the driver designed for engaging a drive chain.
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