Fitness bike with a gear shift unit for simulating the gear ratio of a bicycle

Abstract

A fitness bike with a gear shift unit for simulating the gear ratio of a bicycle comprising a base, a saddle post, and a front support. At lease one gear shift unit is positioned on the handlebar. The gear shift unit has an acceleration button and a deceleration button. When one of these buttons is activated, a corresponding electronic signal will be transmitted to the electronic console. Meanwhile, the control software program built in the electronic console conducts the expected adjustment simulating the gear shift in riding a bicycle. In this way, the exercise resistance applied by the resistance supply unit to the inertia flywheel can be slightly adjusted.

What is claimed is: 
     
         1 . A fitness bike with a gear shift unit for simulating the gear ratio of a bicycle, the fitness bike comprising a base, a saddle post, and a front support, the front support having a handlebar and an electronic console, a control software program being built in the electronic console to control a resistance supply unit in such a way that the resistance supply unit applies a certain resistance to an inertia flywheel, the saddle post having a saddle on the top thereof, a pedal assembly being provided on a lateral tube near the bottom of the saddle post, the pedal assembly imparting a rotation to a transmission sprocket, the inertia flywheel being mounted on a rear support near the tail of the base and driven via a transmission chain mounted the transmission sprocket, the resistance supply unit being interposed between the base  11  and the inertia flywheel for applying an exercise resistance to the inertia flywheel,
 wherein at lease one gear shift unit is positioned on the handlebar and includes an acceleration button and a deceleration button, and wherein, when one of these buttons is activated, a corresponding electronic signal will be transmitted to the electronic console; meanwhile, the control software program built in the electronic console conducts the expected adjustment for simulating the gear shift in riding a bicycle so that the exercise resistance applied by the resistance supply unit to the inertia flywheel is slightly adjusted. 
 
     
     
         2 . The fitness bike with a gear shift unit for simulating the gear ratio of a bicycle as recited in  claim 1 , wherein the gear shift unit is replaced by an electronic speed-adjusting unit.