| 摘要 |
An oval orbit exercise bike comprises a flywheel locked to an upright post of a front portion of a base frame by an axle through central bore. On both sides of the base frame, there are two sets of exercise devices, each of which comprises a pedal, handlebar and linkage mechanism composed of the first and second link active link rods, fixed link rod and crankshaft. When the pedal is pushed downward, force applied reacts on the first and second active link rods, causing the flywheel to rotate around the central bore. Simultaneously, the crankshaft and fixed link rod pivoted on the first active link rod cause the handlebar to produce back and forth swings. The pedal, with the first and second active link rods pivoted on it, makes movement around an oval orbit, causing the handlebar to swing, thus providing human body with relaxation and comfort.
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