Exercise equipment

Abstract

The present invention relates to exercise equipment, and more specifically, to exercise equipment that allows for the adjustment of weight resistance by controlling the elastic force applied to a wire. An exercise apparatus according to the present invention comprising a case having an internal space; an elastic module installed within the internal space and providing elastic force to a wire drawn out outside the case; and an adjustment module installed on one side of the elastic module to adjust the elastic force applied to the wire: wherein the elastic module comprises: a wire roller on which the wire is wound; a rotating shaft integrally rotating with the wire roller; a spring gear rotatably installed on the rotating shaft; and a spiral spring installed inside the spring gear to provide elastic force to the wire, wherein the spring gear comprises: a gear body open on one side to accommodate the spiral spring; a cover connected to the open side of the gear body, with radial protrusions formed on its inner surface in contact with the spiral spring; and a spring retainer securing the inner end of the spiral spring and fixed to the rotating shaft.

What is claimed is: 
     
         1 . An exercise apparatus comprising a case having an internal space; an elastic module installed within the internal space and providing elastic force to a wire drawn out outside the case; and an adjustment module installed on one side of the elastic module to adjust the elastic force applied to the wire:
 wherein the elastic module comprises: a wire roller on which the wire is wound; a rotating shaft integrally rotating with the wire roller; a spring gear rotatably installed on the rotating shaft; and a spiral spring installed inside the spring gear to provide elastic force to the wire,   wherein the spring gear comprises: a gear body open on one side to accommodate the spiral spring; a cover connected to the open side of the gear body, with radial protrusions formed on its inner surface in contact with the spiral spring; and a spring retainer securing the inner end of the spiral spring and fixed to the rotating shaft.   
     
     
         2 . The exercise apparatus of  claim 1 ,
 wherein the wire roller comprises: a shaft hole part which is inserted into the rotating shaft and fixedly mounted thereon to enable the rotation of the rotating shaft; a connecting bar radially extending from the shaft hole part; and a winding groove part formed in a ring shape at the outer end of the connecting bar, around which the wire is wound.   
     
     
         3 . The exercise apparatus of  claim 2 ,
 wherein the top and bottom of the shaft hole part are formed higher than the top and bottom of the connecting bar and the winding groove part.   
     
     
         4 . The exercise apparatus of  claim 3 ,
 wherein the connecting bar is formed lower than the top and bottom of the winding groove part.   
     
     
         5 . The exercise apparatus of  claim 4 ,
 wherein the spring retainer has a bending groove formed to secure the bent inner end of the spiral spring.   
     
     
         6 . The exercise apparatus of  claim 5 ,
 wherein the case includes a bottom surface in contact with the ground and an inclined surface formed to slope upward at a certain angle from the bottom surface.   
     
     
         7 . The exercise apparatus of  claim 6 ,
 wherein the angle of inclination of the inclined surface is between 10° and 20°.