Foldable step exerciser

Abstract

A foldable step exerciser has a base and two pedal members symmetrically provided on two sides of the base. An interlock member is moveably connected to the base and a stopping element is mounted in a rear end of the interlock member and can slide along the base. A protrusion is mounted in a front end of the interlock member and two driving members are respectively mounted between each pedal and an end of the protrusion. When one of the pedals is treaded downwards, the other pedal is moved upwards via the protrusion being driven by the driving members and therefore, a user can exercise. When the interlock member as well as the stopping element is adjusted to move forwards and the pedals are not limited by the stopping element, the pedals can be folded for convenient storage.

1 . A foldable step exerciser comprising: 
 a base having 
 a girder having 
 a pin hole radially defined in a top of the girder,  
 two guiding blocks respectively provided on a bottom of the girder and corresponding to the pin hole,  
 a rail formed between the two guiding blocks and longitudinally extending along the girder,  
 a pivotal element provided on a front end of the girder and having 
 a front shaft transversely mounted on of the pivotal element; and  
 
 a seat provided at the bottom of and perpendicular to the girder and having a middle portion connected to the two guiding blocks;  
 
   two pedal members symmetrically provided on two sides of the girder and each having 
 a pedal,  
 a front arm pivotally connected between a bottom of the pedal and one end of the front shaft,  
 a flat formed on a lower end of the front arm, and  
 a pressure cylinder provided between the pedal and the seat; and  
   an interlock member mounted between the base and the pedal members and having 
 a board inserted into the seat and the rail,  
 a first inserting hole defined in the board and corresponding to the pin hole,  
 a knob element inserted into the pin hole and the first inserting hole whereby the interlock member is securely connected to the girder, and  
 a protrusion transversely and pivotally mounted on a front end of the board, and  
 two driving members respectively provided between each flat and one of two ends of the protrusion.  
   
     
     
         2 . The folded step exerciser as claimed in  claim 1 , wherein a rear shaft is transversely mounted on the girder and is lower than the front shaft, the seat has two wings formed respectively at two ends of the seat and connected to two ends of the rear shaft, two rear arms are respectively and pivotally connected to the bottom of the pedals, and the rear arms are respectively and pivotally connected to the ends of the rear shaft, a elongated hole is defined in the girder, and a C-like holder is formed on a front end of the board and an upper end of the holder is received into the elongated hole, an orifice is longitudinally defined in the holder and a pivotal orifice is defined in a center of the holder, and an axle is inserted into the orifice and pivotally inserted in the pivotal orifice.  
     
     
         3 . The folded step exerciser as claimed in  claim 1 , wherein a guiding slot is defined in the top of the girder, a stopping element is inserted into the guiding slot and is connected to the board, a lug is formed on an upper end of the stopping element and a finger is formed at a lower end of the stopping block and extends downwards to connect to the board, and two stopping blocks are respectively provided on the bottoms of the pedals, laterally extend above the girder and correspond to the upper end of the stopping element.  
     
     
         4 . The folded step exerciser as claimed in  claim 1 , wherein each driving element has a shank and a pole, a threaded aperture is defined in a rear end of the shank and a first bear is formed in a front end of the shank, a second threaded portion is formed in a front end of the pole and corresponding to the threaded aperture in the shank, and a second bear is formed in a rear end of the pole, each flat has a through hole and the protrusion of the interlock member has two through apertures defined in two ends of the protrusion, and 
 wherein each first bear is connected to a corresponding flat and each second bear is connected to one of the ends of the protrusion so that each driving member is pivotally connected to the corresponding flat and the protrusion.    
     
     
         5 . The folded step exerciser as claimed in  claim 3 , wherein each driving element has a shank and a pole, a threaded aperture is defined in a rear end of the shank and a first bear is formed in a front end of the shank, a second threaded portion is formed in a front end of the pole and corresponding to the threaded aperture in the shank, and a second bear is formed in a rear end of the pole, each flat has a through hole and the protrusion of the interlock member has two through apertures defined in two ends of the protrusion, and 
 wherein each first bear is connected to a corresponding flat and each second bear is connected to one of the ends of the protrusion so that each driving member is pivotally connected to the corresponding flat and the protrusion.    
     
     
         6 . The folded step exerciser as claimed in  claim 1 , wherein a rod has an arcuate post provided in a rear end of the girder and a handle is transversely provided between two ends of the post.  
     
     
         7 . The folded step exerciser as claimed in  claim 3 , wherein a rod has an arcuate post provided in a rear end of the girder and a handle is transversely provided between two ends of the post.  
     
     
         8 . The folded step exercise as claimed in  claim 3 , wherein a magnetic block and a sensor are respectively and securely mounted on the stopping blocks.