Gymnastic machine

Abstract

Gymnastic machine ( 1 ) is provided with a frame ( 10 ) and a pair of footrests ( 20 ), each of which is movable on a shaped element ( 30 ) designed in a given fashion along an arched trajectory (P), with each footrest ( 20 ) being connected to the frame ( 10 ) in open chain by means of at least one arm ( 40 ) rotating about a first substantially vertical axis ( 42 ), with each arm ( 40 ) being provided, at the respective footrest ( 20 ), with a rotatable member ( 22 ) suitable to roll on the shaped element ( 30 ), and a controlling device ( 50 ) is associated with each footrest ( 20 ) for varying, in use, the orientation of the footrest ( 20 ) so as to make this footrest ( 20 ) able to rotate in the opposite direction to a rotation imposed on the corresponding arm ( 40 ).

1 . A gymnastic machine ( 1 ) provided with a frame ( 10 ) and a pair of footrests ( 20 ), each of which is movable on a shaped element ( 30 ) designed in a given fashion along an arched trajectory (P); each said footrest ( 20 ) being connected to said frame ( 10 ) in open chain by means of at least an arm ( 40 ) rotating with respect to a first axis ( 42 ); each said arm ( 40 ) being provided, at said respective footrest ( 20 ), with a rotatable member ( 22 ) suitable to roll on said shaped element ( 30 ); characterized by comprising controlling means ( 50 ) associated with each said footrest ( 20 ) for varying, in use, the orientation of said footrest ( 20 ) so as to make said footrest ( 20 ) able to rotate with respect to said respective arm ( 40 ) in the opposite direction to a rotation imposed on said arm ( 40 ).  
     
     
         2 . A machine according to  claim 1 , characterized in that said controlling means ( 50 ) comprise a turning pair ( 52 ) for rotatable connection of each said footrest ( 20 ) about a second pivot axis ( 24 ) with respect to the corresponding said arm ( 40 ) and a tappet device ( 54 ) coupled to said shaped element ( 30 ).  
     
     
         3 . A machine according to  claim 2 , characterized in that each said turning pair ( 52 ) supports said respective footrest ( 20 ) with said corresponding second axis ( 24 ) inclined with respect to said arm ( 40 ) in a given fashion.  
     
     
         4 . A machine according to  claim 2 , characterized in that each said tappet device ( 54 ) is coupled to said shaped element ( 30 ) at a respective groove ( 34 ) arched like said trajectory (P) and comprises a pin ( 56 ) coupled to said respective footrest ( 20 ) to control rotation thereof about said second axis ( 24 ).  
     
     
         5 . A machine according to  claim 4 , characterized in that said second axis ( 24 ) is inclined with respect to said arm ( 40 ) in such a way that said pin ( 56 ) determines a rotation of said respective footrest ( 20 ) which corresponds to a lowering of the front portion ( 26 ) of said footrest ( 20 ) simultaneously to a raising of a respective rear portion ( 28 ) in a lowering movement of said corresponding footrest ( 20 ) on said shaped element ( 30 ).  
     
     
         6 . A machine according to  claim 2 , characterized in that said tappet device ( 54 ) is designed to couple to said shaped element ( 30 ) bilaterally, so as to maintain said corresponding footrest ( 20 ) steadily on said trajectory (P).  
     
     
         7 . A machine according to  claim 6 , characterized in that said tappet device ( 54 ) comprises a carriage ( 57 ) provided with at least a roller ( 58 ) housed inside said groove ( 34 ).  
     
     
         8 . A machine according to  claim 7 , characterized in that said carriage ( 57 ) comprises two rollers ( 58 ) with axes parallel and coupled transverse to said groove ( 34 ).  
     
     
         9 . A machine according to  claim 1  characterized in that each said arm ( 40 ) is articulated on the side of said respective first vertical axis ( 42 ) about a third pivot axis ( 44 ) substantially transverse to said first axis( 42 ).  
     
     
         10 . A machine according to  claim 9 , characterized in that each said arm ( 40 ) comprises a first lever ( 46 ) rotatable with respect to said first axis ( 42 ) and a second lever ( 48 ) carried by said first lever ( 46 ) about said third axis ( 44 ) and supporting one of said footrests ( 20 ).  
     
     
         11 . A machine according to  claim 1 , characterized in that said first axis ( 42 ) is substantially vertical.  
     
     
         12 . A machine according to  claim 1 , characterized by comprising load means ( 70 ) suitable to exert on each said arm ( 40 ) a return action increasing in degree as the angle of rotation of each said arm ( 40 ) increases to absorb power in the outward movement of each arm ( 40 ) and improve the stability of a user on said footrests ( 20 ).  
     
     
         13 . A machine according to  claim 12 , characterized in that said load means ( 70 ) comprise a resisting component ( 72 ) for each said arm ( 40 ) positioned between said respective second lever ( 48 ) and said frame ( 10 ); each said resisting component ( 72 ) comprising a substantially rigid cable ( 74 ) connected in series to a torsion spring ( 76 ).  
     
     
         14 . A machine according to  claim 13 , characterized in that said load means ( 70 ) comprise an idler component ( 78 ) suitable to maintain the resisting component ( 72 ) straddling the shaped element  30 .  
     
     
         15 . A machine according to  claim 1 , characterized in that said pin ( 56 ) is coupled to said footrest ( 20 ) in a neighborhood of said second axis ( 24 ).  
     
     
         16 . A machine according to  claim 1 , characterized in that the race ( 32 ) and said groove ( 34 ) of said shaped element ( 30 ) present a height that decreases as the angle of inclination of said arm ( 40 ) increases with respect to a longitudinal median plane (M).