| 摘要 |
A transmitting device for exercise appliances includes a first, a second and a third shaft all fixed on a bike frame in parallel. The first shaft has a first transmitting wheel and a first transmitting gear, the second shaft has a second transmitting gear with a one-way bearing and a second transmitting wheel, and the third shaft has a third transmitting wheel with a one-way bearing, a fourth transmitting wheel and a fifth transmitting wheel. The first transmitting gear engages with the second transmitting gear, the first transmitting wheel is connected with the third transmitting wheel by a first connecting member, the second transmitting wheel is connected with the fifth transmitting wheel by an endless belt. Then the fourth transmitting wheel always rotates in an ordinary direction, whether the first shaft is rotated in the ordinary or in the reverse direction.
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