| 摘要 |
An drive assembly for an exercise bike consists of an electrical motor (10), a driven wheel (20), a unidirectional clutch (30), a flywheel (40), a shaft (47) and a crank wheel (50). The shaft (47) penetrates the driven wheel (20), the unidirectional clutch (30) and the flywheel (40). The driven wheel (20) is driven by the electrical motor (10) and then passes on the rotating momentum via the clutch (30), the flywheel (40), the belt wheel and the crank wheel (50) in sequence when the electrical motor (10) is switched on. The exercise bike can rotate in an automatic way to make the ordinary exercise bike into a physical therapy training bike.
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