Waist and leg exerciser

Abstract

Disclosed is a waist and leg exerciser, which includes two arched track boards each defining a circularly arched sliding slot, a link, which has two distal ends respectively coupled to and movable along the circularly arched sliding slots of the arched track boards, a seat supported on the link, and two cables for alternatively pulling the two distal ends of the link along the circularly arched sliding slots of the arched track boards to cause the seat to move in an 8-shaped action.

1 . A waist and leg exerciser comprising two arched track boards, said arched track boards each defining a circularly arched sliding slot; 
 a link, said link having two distal ends respectively coupled to and movable along the circularly arched sliding slots of said arched track boards;    a seat supported on said link; and    two cables adapted to alternatively pull the two distal ends of said link along the circularly arched sliding slots of said arched track boards.    
     
     
         2 . The waist and leg exerciser as claimed in  claim 1 , further comprising a seat frame supporting said seat on said link, said seat frame having a center shaft pivoted to said link and two pull shafts disposed at two sides relative to said center shaft and respectively holding a first end of one of said two cables, a base frame, and two pedals bilaterally pivoted to said base frame respectively holding a second end of one of said two cables for pedaling by the user to stretch said cables.  
     
     
         3 . The waist and leg exerciser as claimed in  claim 1 , wherein said seat frame is mounted on a bearing plate, which is fixedly mounted with a holder frame that supports said track boards.  
     
     
         4 . The wait and leg exerciser as claimed in  claim 1 , further comprising an upright shaft fixedly provided at said base frame and adapted to support said seat frame, and a plurality of pulleys respectively symmetrically pivoted to said upright shaft and said bearing plate to guide said cables.  
     
     
         5 . A waist and leg exerciser comprising mount, two pulleys bilaterally pivotally mounted in said mount, two track boards respectively mounted in front and rear sides of said mount, said track boards each defining a circularly arched sliding slot, a link coupled between the circularly arched sliding slots of said track boards, a cover plate covered on said mount, a cam pivotally supported on said cover plate with an axle bearing, a transmission wheel pivoted to said cover plate, a motor, a transmission belt coupled between an output shaft of said motor and said transmission wheel, two pull shafts, two rollers, and two cables respectively extending over said pulleys and connected between said pull shafts and said e rollers.