System for adjusting a load for gymnastic machines and tensioning and returning device or said system for adjusting

Abstract

A system for adjusting a load movable along a vertical direction for gymnastic machines provided with a frame, said system comprising a supporting member of said mobile load, provided with a plurality of adjustment holes, said movable load consisting of a plurality of weights arranged stacked and selectable, a selector member to be inserted in one of said adjustment holes of said supporting member, in order to select a group of said weights, adjusting said movable load and a string having an end fixed to said selector member, said system comprising tensioning means of said string, to keep said string in tension when said selector member is inserted in one hole of said plurality of adjustment holes, and to return said selector member when it is disengaged from said plurality of adjustment holes The system also concerns a tensioning and returning device.

1 . System for adjusting a load movable along a vertical direction for gymnastic machines provided with a frame, said system comprising:
 a supporting member of said mobile load, provided with a plurality of adjustment holes, said movable load consisting of a plurality of weights arranged stacked and selectively selectable,   a selector member intended to be inserted in one of said adjustment holes of said supporting member, in order to select a group of said weights, adjusting said movable load, and   a string having an end fixed to said selector member,   said system being characterized by comprising tensioning means of said string, to keep said string in tension when said selector member is inserted in one hole of said plurality of adjustment holes, and to return said selector member when it is disengaged from said plurality of adjustment holes.   
     
     
         2 . System according to  claim 1 , characterized in that said tensioning means comprise a tensioning device having:
 a guide, connectable to said frame of said gymnastic machine, and   a counterweight movable slidingly along said guide, to which said string is fixed.   
     
     
         3 . System according to  claim 1 , characterized in that said guide is a wire, arranged substantially parallel to said vertical direction, having the ends fixed to said frame, said counterweight having a through hole through which said cable is inserted. 
     
     
         4 . System according to  claim 2 , characterized in that said tensioning device comprises at least one return element of said string, such as a ring or the like. 
     
     
         5 . System according to  claim 1 , characterized in that said at least one return element is fixed to said supporting member by a bracket or the like. 
     
     
         6 . System according to  claim 4 , characterized in that said at least one return element is arranged in such a way that said string is tilted with respect to said guide, when it is tensioned, so as to form a “V” with said guide. 
     
     
         7 . System according to  claim 1 , characterized in that said tensioning means comprise a winder spring of said string. 
     
     
         8 . System according to  claim 1 , characterized:
 in that said supporting member comprises an elongated element parallel arranged and movable with respect to said vertical direction, said plurality of adjustment holes being obtained on said elongated element, a first weight of said plurality of weights being integral with said elongated element, and   in that each one of said weights have a first through hole, through which said elongated element is insertable, and a second through hole, substantially perpendicular to said first through hole, arranged so that when said weights are stacked and said elongated element is inserted in said first through holes, each of said second through hole of each one of said weights is arranged in correspondence of a respective adjustment hole of said elongated element.   
     
     
         9 . System according to  claim 1 , characterized:
 in that it comprises a lever movably coupled with said movable load, and   in that said string is kept in tension by said tensioning means and by said lever.   
     
     
         10 . Tensioning and returning device for a system for adjusting a movable load of a gymnastic machine characterized by comprising:
 a selector member capable to adjust said movable load,   a string having an end fixed to said selector member,   a guide substantially vertically arranged, and   a counterweight slidingly movable along said guide, to which said string is fixed.   
     
     
         11 . Device according to  claim 1 , characterized by comprising at least one return element of said string, such a ring or the like. 
     
     
         12 . Device according to  claim 1 , characterized in that said at least one return element is arranged so that said string is tilted, when it is tensioned, with respect to said guide, so as to form a “V” with said guide. 
     
     
         13 . Device according to  claim 10 , characterized in that said counterweight has a through hole and said guide is a cable inserted in said through hole. 
     
     
         14 . Device according to  claim 11 , characterized by comprising a bracket or the like to fix said return element to said gymnastic machine.