| CPC A63B 21/0051 (2013.01) [A63B 22/0056 (2013.01); F16H 57/02 (2013.01); A63B 21/225 (2013.01)] | 7 Claims |
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1. An exerciser comprising:
a frame having:
a base;
a front supporting rod mounted on a front end of the base;
a rear supporting rod mounted on the base; and
a grip assembly mounted on the front supporting rod;
a driving assembly mounted on the frame and comprising
a gear box mounted in the rear supporting rod and comprising
a box body;
an input axle mounted rotatably in the box body;
an input gear co-axially mounted securely on the input axle;
two unidirectional bearings mounted respectively on two ends of the input axle;
an output gear mounted rotatably in the box body and having an output axle co-axially protruding from the output gear and extending out of the box body; and
multiple transmission gear sets mounted between and engaged with the input gear and the output gear; and
two cranks, each having a first end connected with one of the two_unidirectional bearings, and a second end provided with a pedal;
a damping assembly mounted on the rear supporting rod, connected with the output axle, and being driven by the gear box to generate a drug force to the driving assembly; and
a linkage assembly connected between the rear supporting rod and the two cranks to allow the two cranks to respectively swing in reverse directions.
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