| 摘要 |
A pedal driven wheeled vehicle includes a frame and a driven wheel with a driven hub engaged with the frame. A driven system includes a first pedal crank arm and a second crank arm. A first pedal is located at a removed end of the first pedal crank arm, and a second pedal is located at a removed end of the second pedal crank arm. A pedal driven shaft includes a longitudinal axis, a first end, and a second end and is rotatably mounted to the frame of the pedal driven shaft. The second pedal crank arm attaches to the second end of the pedal driven shaft. The pedal driven shaft includes a first gear mounted thereto such that the first gear rotates in a first plane. A hub engagement gear engages with the driven wheel hub of the driven wheel. A driven shaft includes a first and a second end. The first end includes a first end worm gear for engagement with the first gear of the pedal driven shaft, and the second end includes a second end worm gear for engagement with the hub engagement gear such that when the pedal crank arms are rotated the rear wheel rotates.
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