Fitness exercise apparatus

Abstract

A fitness exercise apparatus includes a base member, a support unit disposed on the base member, and a pivot assembly disposed on the support unit. A seat frame includes a guide rail having a front end provided with a pivot connecting member pivotally connected to the pivot assembly. The seat frame is pivotally movable to different angular positions relative to the base member. An elastic cord unit includes a plurality of first and second elastic cords connected to the support unit. A pulling unit includes two first cables connectable with the first elastic cords. An operating unit is connectable with the first cables.

What is claimed is: 
     
         1 . A fitness exercise apparatus comprising:
 a main frame including a base member configured to be disposed on a support surface, a support unit disposed on said base member, and a pivot assembly disposed on said support unit;   a seat frame including a guide rail that extends along a longitudinal direction and that has a front end provided with a pivot connecting member pivotally connected to said pivot assembly and a rear end opposite to said front end along the longitudinal direction, a seat assembly slidably disposed on said guide rail, and a foot post connected to said rear end of said guide rail and disposed rearwardly of said base member, said seat frame being pivotally movable to different angular positions relative to said base member;   a swing frame connected to said guide rail at a position corresponding to said foot post;   an elastic cord unit including a plurality of first elastic cords and a plurality of second elastic cords connected to said support unit;   a pulling unit including three first pulley sets disposed on said base member and said support unit, two first cables each of which is looped around said first pulley sets and connectable with at least one of said first elastic cords, a second pulley set including a plurality of pulleys disposed on said main frame, said seat frame and said swing frame, and a second cable looped around said pulleys of said second pulley set and connectable with at least one of said second elastic cords; and   an operating unit connectable with said first cables.   
     
     
         2 . The fitness exercise apparatus as claimed in  claim 1 , wherein said foot post has a bottom portion attached with a roller for rolling contact with the support surface. 
     
     
         3 . The fitness exercise apparatus as claimed in  claim 2 , wherein:
 said support unit includes a support post having a bottom portion connected to said base member and a top portion that is opposite to said bottom portion and that is provided with a pair of support plates at a top end thereof, a cross bar disposed on said pair of support plates and having two opposite ends respectively located on two sides of said support post that are opposite along a horizontal direction transverse to the longitudinal direction, a hanging rod connected to said support post between said top and bottom portions thereof and having two opposite ends respectively located on said two opposite sides of said support post, two wheel frames respectively disposed on said two opposite ends of said hanging rod, and a fixing frame connected between said base member and said support post;   one of said first pulley sets is disposed on said base member, a second one of said first pulley sets is disposed on said wheel frames, and a third one of said first pulley sets is disposed on said cross bar;   said first elastic cords are disposed on said two opposite ends of said cross bar; and   said second elastic cords are disposed on said pair of support plates.   
     
     
         4 . The fitness exercise apparatus as claimed in  claim 3 , wherein said swing frame includes a connecting rod connected to said guide rail at a position corresponding to said foot post, two knee support rods connected to two opposite sides of said connecting rod, a swing rod pivoted to a top end of said connecting rod and swingable toward and away from said foot post, and two positioning rods connected to two opposite sides of said swing rod and distal to said knee support rods, said second pulley set including three said pulleys, one of which is disposed in said bottom portion of said support post, a second one of which is disposed on said base member, and a third one of which is disposed in said foot post. 
     
     
         5 . The fitness exercise apparatus as claimed in  claim 2 , wherein said first elastic cords have different thicknesses, and said second elastic cords have different thicknesses. 
     
     
         6 . The fitness exercise apparatus as claimed in  claim 3 , wherein said pivot assembly includes a pivot seat connected to said fixing frame, and a pivot rod connected to said pivot seat and said pivot connecting member. 
     
     
         7 . The fitness exercise apparatus as claimed in  claim 6 , wherein said pivot seat includes a pair of pivot holes aligned along a vertical direction transverse to the horizontal direction and the longitudinal direction, and a first positioning hole, a second positioning hole and a third positioning hole disposed around said pair of pivot holes and angularly spaced apart from each other, said seat frame further including a bolt and nut assembly for fixing said seat frame to a desired angular position relative to said base member, said bolt and nut assembly including a bolt for insertion through a hole in said guide rail that is proximate to said front end thereof and a selected one of said first to third positioning holes, and a nut connected to a lower end of said bolt that extends out of the selected one of said first to third positioning holes. 
     
     
         8 . The fitness exercise apparatus as claimed in  claim 7 , wherein said first positioning hole and said second positioning hole are spaced apart by an angle of 45 degrees, and said first positioning hole and said third positioning hole are spaced apart by an angle of 90 degrees.