Exercising device

Abstract

An exercising device includes at least one actuating grip adapted to be actuated by a user for exercise, and a counteracting force generating member configured to act upon the actuating grip with a counteracting force. The actuating grip and the counteracting force generating member are connected relative to each other through a tensing member and a power ratio varying member. The power ratio varying member is a drive wheel unit which includes at least two disc-shaped wheels that have different diameters, that are coaxially coupled to each other, and that are non-rotatable relative to each other. A coupling unit is disposed to permit the tensing member to engage a selected one of the two disc-shaped wheels.

I claim:  
     
         1 . An exercising device comprising: 
 at least one movable actuating grip adapted to be actuated by a user for exercise, a counteracting force generating member configured to act upon said actuating grip with a counteracting. force, and a tensing member and a power ratio varying member that connect said actuating grip and said counteracting force generating member relative to each other, wherein said power ratio varying member. is a drive wheel unit which includes at least two disc-shaped wheels that have different diameters, that are coaxially coupled to each other, and that are non-rotatable relative to each other,    said exercising device further comprising, a coupling unit disposed to permit said tensing member to engage a selected one of said disc-shaped wheels.    
     
     
         2 . An exercising device according to  claim 1 , wherein said coupling unit is configured so as to be quick-releasable.  
     
     
         3 . An exercising device according to  claim 2 , wherein said coupling unit is form-locking.  
     
     
         4 . An exercising device according to  claim 3 , wherein said coupling unit includes a plug disposed on one end of said tensing member, and an undercut cavity which is disposed in a circumferential side of said selected one of said disc-shaped wheels, and a transverse channel which permits external access to said undercut cavity.  
     
     
         5 . An exercising device according to  claim 4 , wherein said plug is cylindrical.  
     
     
         6 . An exercising device according to  claim 4 , wherein said cavity has an entry region which is communicated with said transverse channel, and a securing region which is closed at one side thereof, and which is communicated with said entry region in a circumferential direction.  
     
     
         7 . An exercising device according to  claim 1 , wherein said drive wheel unit is configured such that said disc-shaped wheels are alignable in sequence.  
     
     
         8 . An exercising device according to  claim 1 , wherein said drive wheel unit includes three disc-shaped wheels.  
     
     
         9 . An exercising device according to  claim 8 , wherein said disc-shaped wheels are exchangeable with one another.  
     
     
         10 . An exercising device according to  claim 9 , wherein two outer ones of said disc-shaped wheels are exchangeable with each other.  
     
     
         11 . An exercising device according to  claim 8 , wherein each of said disc-shaped wheels is noncircular.  
     
     
         12 . An exercising device according to  claim 11 , wherein each of said disc-shaped wheels is ellipsoid.