Bicycle type training machine

Details Bicycle type training machine Bicycle type training machine

A - Human Necessities

63

B

273/84

A63B 69/16 (2006.01) A63B 21/005 (2006.01) A63B 22/08 (2006.01) A63B 24/00 (2006.01)

Patent

CA 1310673

ABSTRACT OF THE DISCLOSURE A bicycle type training machine is disclosed which includes a crank arm secured to a rotation shaft, and pedals attached to each free end of the crank arm. The rotation shaft of a generator is couple to the rotation shaft of the crank arm. Data of load amount to be loaded to the rotation shaft of the crank arm is outputted by a microcomputer. The load value data is then compared with a count value of a counter to which a pulse train is applied from a reference oscillator, and a pulse signal having a high level and a low level in accordance with the result of the comparison is outputted from a comparator. A duty ratio of the outputted pulse signal is decided by the periods of the high level and the low level and changed in accordance with the load value data. A switching transistor electrically connected in parallel to an armature of the generator is turned on or off in response to the high level or the low level of the pulse signal. Braking force of the generator is changed in accordance with the duty ratio of the switching transistor. Therefore, the load that is determined by the load value data foam the microcomputer is loaded to the rotation shaft of the crank arm and thus to the legs of the user.

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