Structure of multipurpose fitness machine

Abstract

A multipurpose fitness machine includes a bench, and an operating frame unit adapted to support the bench on the floor for operation by the user to move the bench, the operating frame unit having a U-bar, two parallel bars respectively obliquely extended from the ends of the U-bar at an angle, a cross bar connected between the U-bar adjacent to the parallel bars, two coupling tubes respectively fixedly connected the parallel bars remote from the U-bar, a tubular operation bar fastened to the transverse tubes and connected between the parallel bars, and a plurality of anti-skid foot members respectively provided at the U-bar and the cross bar.

What the invention claimed is:  
     
         1 . A multipurpose fitness machine comprising: 
 a bench, said bench comprising a bottom sidewall, two longitudinal racks arranged in parallel at said bottom sidewall, said racks each having a longitudinal series of retaining notches, two lugs respectively fastened to the bottom side wall near a rear side and arranged in parallel, and two wheels respectively pivoted to said for enabling said bench to be moved on the floor; and    an operating frame unit adapted to support said bench on the floor for operation by the user to move said bench, said operating frame unit comprising a U-bar, two parallel bars respectively formed integral with two ends of said U-bar and obliquely extended from said U-bar at an angle, a cross bar connected between each connection area between the ends of said U-bar and said parallel bars, two coupling tubes respectively fixedly connected to one end of each of said parallel bars remote from said U-bar at right angles, a tubular operation bar fastened to said transverse tubes and connected between said parallel bars, and a plurality of anti-skid foot members respectively provided at said U-bar and said cross bar, said coupling tubes each having a radial retaining hole, said tubular operation bar comprising two retainer springs, said retainer springs each having a protruded retaining portion respectively releasably engaged into the retaining hole of each of said coupling tubes.    
     
     
         2 . The multipurpose fitness machine of  claim 1  wherein said longitudinal racks are directly fixedly fastened to the bottom sidewall of said bench.  
     
     
         3 . The multipurpose fitness machine of  claim 1  wherein said bench further comprises a hardness adapted to secure the user to said bench.  
     
     
         4 . A multipurpose fitness machine comprising: 
 a bench, said bench comprising a bottom sidewall, two bottom ribs, two longitudinal racks respectively fixedly fastened to said bottom ribs, said longitudinal racks each having a longitudinal series of retaining notches, and two bottom lugs respectively fixedly connected to an oblique rear end of each of said bottom ribs;    a supporting frame, said supporting frame having two opposite ends respectively pivoted to said lugs of said bench; and    an operating frame unit supported on said supporting frame and adapted for operation by the user sitting on said bench to move said bench;    wherein said operating frame unit is comprised of a tubular U-bar, two tubular parallel bars, a cross bar, two handlebars, and two pairs of pulleys, said parallel bar being respectively obliquely formed integral with two ends of said U-bar, said cross bar being connected between said parallel bars, said handlebars being respectively inserted into said parallel bars and locked by a respective lock pin, said pulley being respectively mounted on a transverse middle section of said U-bar and said cross bar and supported on two parallel frame sections of said supporting frame.    
     
     
         5 . The multipurpose fitness machine of  claim 4  wherein said supporting frame comprises at least one pair of cushion blocks disposed at two sides and adapted to support said bench.  
     
     
         6 . The multipurpose fitness machine of  claim 4  wherein said handlebars are respectively inserted into said parallel bars and selectively locked in one of a series of positions longitudinal positions.  
     
     
         7 . The multipurpose fitness machine of  claim 4  wherein said handlebars are formed integral with said parallel bars.  
     
     
         8 . A multipurpose fitness machine comprising 
 a bench;    a supporting frame, said supporting frame having two opposite ends respectively pivoted to said lugs of said bench; and    an operating frame unit adapted for operation by the user sitting on said bench to move said bench;    wherein said bench comprises a rear bench unit fixedly mounted on said supporting frame, and a front bench unit pivoted to said supporting frame, said front bench unit comprising a bottom sidewall, two longitudinal bottom ribs, two longitudinal racks respectively fixedly fastened to said bottom ribs, said longitudinal racks each having a longitudinal series of retaining notches, and two bottom lugs respectively fixedly connected one end of each of said longitudinal bottom ribs and respectively pivoted to said supporting frame.    
     
     
         9 . The multipurpose fitness machine of  claim 8  wherein said supporting frame comprises a plurality of cushion blocks bilaterally disposed at a bottom side.  
     
     
         10 . The multipurpose fitness machine of  claim 8  wherein said front bench unit and said rear bench unit are disposed in a flush manner when said front bench unit is lowered and supported on said supporting frame.  
     
     
         11 . The multipurpose fitness machine of  claim 8  wherein said front bench unit further comprises a transverse bottom rid connected between said longitudinal ribs and said lugs.  
     
     
         12 . The multipurpose fitness machine of  claim 8  wherein said operating frame unit further comprises a plurality of pulleys respectively mounted on a transverse middle section of said U-bar and said cross bar and adapted to support said operating frame unit on said supporting frame.  
     
     
         13 . The multipurpose fitness machine of  claim 8  wherein said operating frame unit further comprises a plurality of anti-skid foot members respectively mounted on a transverse middle section of said U-bar and said cross bar and adapted to support said operating frame unit on a flat surface.  
     
     
         14 . The multipurpose fitness machine of  claim 8  wherein said operating frame unit further comprises a pair of pulleys respectively mounted on said cross bar and supported on said supporting frame.  
     
     
         15 . The multipurpose fitness machine of  claim 8  wherein said operating frame unit further comprises a pair of pulleys respectively mounted on a transverse middle section of said U-bar and supported on said supporting frame.