| 摘要 |
A bike exerciser includes a resistance device connected to the frame of the exerciser and the resistance device has a base board fixedly connected to the frame and a movable board movably restrained on the base board. A plurality of magnets are connected to movable board. A lever is connected to the frame and a connection member is connected between the movable board and the lever. The connection member movably extends through a tube and a first end member is connected to an end of the tube, and a second end member is connected to the movable board. A spring is mounted to the connection member and biased between the first end member and the second end member. The movable board is moved to let the magnets move toward the wheel of the exerciser by pivoting the lever.
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