Exercising monocycle

Abstract

An exercising monocycle includes a main body provided with a seat so that a user may be seated on the seat to ride the exercising monocycle, a main frame secured on the main body, a main shaft rotatably mounted in the main frame, an acceleration mechanism driven by the main shaft to output an acceleration power, and a magnetic control mechanism mounted in the main frame. The magnetic control mechanism includes a flywheel for receiving the acceleration power output from the acceleration mechanism, and a damping device for increasing a resistance applied on rotation of the flywheel, and the acceleration mechanism being surrounded by the flywheel. Thus, the exercising monocycle has a smaller volume and occupies a smaller space.

What is claimed is:  
     
         1 . An exercising monocycle, comprising: 
 a main body, provided with a seat so that a user may be seated on the seat to ride the exercising monocycle;    a main frame, secured on the main body;    a main shaft, rotatably mounted in the main frame;    an acceleration mechanism, mounted in the main frame, and driven by the main shaft, to output an acceleration power; and    a magnetic control mechanism, mounted in the main frame, and includes a flywheel for receiving the acceleration power output from the acceleration mechanism, and a damping device for increasing a resistance applied on rotation of the flywheel, and the acceleration mechanism being surrounded by the flywheel.    
     
     
         2 . The exercising monocycle in accordance with  claim 1 , wherein the main frame is a substantially U-shaped frame that includes two opposite fixing plates secured on the main body.  
     
     
         3 . The exercising monocycle in accordance with  claim 2 , wherein the main frame includes a bottom plate secured on the main body and mounted between the two opposite fixing plates.  
     
     
         4 . The exercising monocycle in accordance with  claim 2 , wherein one of the two opposite fixing plates is protruded with two opposite support plates.  
     
     
         5 . The exercising monocycle in accordance with  claim 2 , wherein the main shaft is rotatably mounted in each of the two opposite fixing plates, and has two ends each protruded outward from each of the two opposite fixing plates and each secured with a crank which has a pedal, so that the main shaft may be rotated through the cranks by stepping the pedals.  
     
     
         6 . The exercising monocycle in accordance with  claim 1 , wherein the acceleration mechanism includes: 
 a drive gear secured on and rotated by the main shaft;    a driven gear rotatably mounted on the main shaft;    a single direction bearing mounted on one side of the driven gear;    a support shaft mounted on the main frame and parallel with the main shaft; and    a composite gear rotatably mounted on the support shaft, and including a smaller gear meshing with the drive gear, and a larger gear meshing with the driven gear.    
     
     
         7 . The exercising monocycle in accordance with  claim 6 , wherein the drive gear has sixty teeth, the driven gear has twenty teeth, the larger gear has sixty teeth, and the smaller gear has twenty teeth, thereby obtaining an optimum rotation ratio of 1:9.  
     
     
         8 . The exercising monocycle in accordance with  claim 6 , wherein the flywheel of the magnetic control mechanism is mounted on the single direction bearing, and is formed with an annular flange which has an inner wall provided with a metallic layer.  
     
     
         9 . The exercising monocycle in accordance with  claim 1 , wherein the flywheel of the magnetic control mechanism has a surface formed with multiple through holes each having one side protruded with an air guide plate.  
     
     
         10 . The exercising monocycle in accordance with  claim 8 , wherein the damping device of the magnetic control mechanism includes two opposite support plates each provided with multiple magnetic blocks which are spaced from the flange of the flywheel with a determined distance.  
     
     
         11 . The exercising monocycle in accordance with  claim 10 , wherein each of the two opposite support plates has a first end formed with a pivot end and a second end formed with a free end, and the damping device of the magnetic control mechanism includes two pivot shafts each extended through the pivot end of each of the two opposite support plates and each secured on the main frame, so that the free end of each of the two opposite support plates may be pivoted about the pivot shaft.  
     
     
         12 . The exercising monocycle in accordance with  claim 10 , further comprising an adjusting device for adjusting the distance between the metallic layer of the flywheel and the magnetic blocks of the two opposite support plates, so as to change the magnetic force of the magnetic blocks of the support plates of the damping device of the magnetic control mechanism.  
     
     
         13 . The exercising monocycle in accordance with  claim 12 , wherein the adjusting device includes a seat plate, a control rod, a guide wheel, two control wires, and two elastic members, wherein: 
 the seat plate is secured on the main frame and formed with a through hole;    the control rod is passed through the through hole of the seat plate, and has an upper section secured with a rotary knob, a mediate section provided with a positioning block, and a lower section extended into the main frame and secured with a fixing block,    the guide wheel is mounted on the seat plate, and is located adjacent to the fixing block of the control rod, the guide wheel has a periphery formed with multiple grooves;    each of the two control wires has a first end secured on the free end of each of the two opposite support plates and a second end reeved through the grooves of the guide wheel and secured on the fixing block of the control rod; and    each of the two elastic members has a first end secured on the seat plate and a second end secured on the free end of each of the two opposite support plates.    
     
     
         14 . The exercising monocycle in accordance with  claim 12 , wherein the seat plate is secured on the main frame, and is formed with a through hole, and multiple positioning recesses surrounding the through hole, and the positioning block has a bottom formed with a chamber for receiving a compression spring and a positioning ball that may be locked in one of the multiple positioning recesses of the seat plate, thereby providing a temporary positioning effect when the rotary knob is rotated.