Compact inertial muscle training device

Abstract

Compact inertial device for muscle training, consisting of a pulling body (1) and a drive rope (2). The pulling body (1) in turn comprises a rotating main shaft (4), a reel (8) mounted on the main shaft (4), an inertia element (6) linked solidly to one end of the main shaft (4) for accumulation of kinetic energy from the rotation of the main shaft (4), and a planetary gear (5), which in turn comprises a central gear mounted on the main shaft (4), for multiplication of the transmission speed from the main shaft (4) driven by the reel (8) to the inertia element (6). In its preferred embodiment, the spool (8) is a conical spool with a smaller diameter sector to which one end of the rope (2) is solidly attached.

1 . A compact inertial muscle training device comprising:
 a pulling body ( 1 ), further comprising:
 a rotating main shaft ( 4 ), 
 a reel ( 8 ) mounted solidly and coaxially on the main shaft ( 4 ), and 
 an inertia element ( 6 ) solidly linked to one end of the main shaft ( 4 ) for accumulation of kinetic energy from the rotation of the main shaft ( 4 ), and 
   a drive rope ( 2 ), attached at one end to the reel ( 8 ), which can be rewound and unwound on the reel ( 8 ),   
       the inertial device being characterised in that it additionally comprises a planetary gear ( 5 ) which in turn comprises a central gear linked solidly to the main shaft ( 4 ) for multiplication of the transmission speed from the main shaft ( 4 ) to the inertia element ( 6 ). 
     
     
         2 . Inertial device according to  claim 1 , wherein the reel ( 8 ) is a conical reel having a sector of smaller diameter to which one end of the rope ( 2 ) is solidly attached. 
     
     
         3 . Inertial device according to  claim 1  wherein the pulling body ( 1 ) additionally comprises an external casing ( 3 ) comprising in turn:
 a through opening ( 9 ) for passage of the rope ( 2 ), and 
 a coupling ( 11 ). 
 
     
     
         4 . Inertial device according to  claim 3 , wherein the casing ( 3 ) additionally comprises an attachment hook ( 10 ). 
     
     
         5 . Inertial device according to  claim 3  characterised in that the coupling ( 11 ) comprises:
 a prominent section ( 13 ) projecting from the casing ( 3 ), and 
 a groove ( 14 ) that surrounds the prominent area ( 13 ) perimetrically. 
 
     
     
         6 . Inertial device according to  claim 3 , characterised in that it incorporates a handle ( 12 ) which can be temporarily inserted into the coupling ( 11 ) for gripping the pulling body ( 1 ). 
     
     
         7 . Inertial device according to  claim 1 , characterised in that it additionally comprises a ratchet ( 16 ) attachable to the rope ( 2 ) for adjusting the length of the rope ( 2 ) windable and unwindable on the reel ( 8 ). 
     
     
         8 . Inertial device according to  claim 7  characterised in that the ratchet ( 16 ) comprises
 a through hole ( 17 ) for attachment of an anchor element, and 
 an attachment ring ( 19 ) for attaching a pulley. 
 
     
     
         9 . Inertial device according to  claim 1 , characterised in that it incorporates a pulley ( 20 ) linkable to the rope ( 2 ) to increase the pulling resistance. 
     
     
         10 . Inertial device according to  claim 3 , characterised in that it incorporates a support platform ( 21 ) linkable to the coupling ( 11 ) for fixing the pulling body ( 1 ). 
     
     
         11 . Inertial device according to  claim 10  characterised in that the platform ( 21 ) is foldable. 
     
     
         12 . Inertial device according to  claim 3  characterised in that it additionally comprises a fastening element ( 15 ) linkable to the coupling ( 11 ) for immobilisation of the pulling body ( 1 ). 
     
     
         13 . Inertial device according to  claim 1 , characterised in that it incorporates a force limiting clutch for decoupling the main shaft ( 4 ) from the central gear of the planetary gear ( 5 ). 
     
     
         14 . Inertial device according to  claim 13 , characterised in that the force limiting clutch consists of a pre-calibrated spring and wheels facing the main shaft ( 4 ).