Structure of steppers

Abstract

This invention is to introduce an improved structure of steppers (fitness equipment). The improved structure comprises: a main base, a supporting stand at the front end of the main base, and a cross bar that is positioned on top of and cross over the supporting stand. Two stepping bars are symmetrically installed on both sides of the cross bar, and on the stepping bars set several equally spaced lock holes for fixing stepping mats; each of the two symmetric stepping mats has a pair of properly spaced connectors at the bottom that fixes stepping mats on two lock holes of stepping bars, which enables swing curve length of the stepping mats adjustable due to multiple choices of lock holes for fixture.

What is claimed is: 
     
         1 . An improved structure of steppers comprises: a main base, a cross bar set in one end of the said main base; Two stepping bars are symmetrically installed on both sides of the said cross bar; two stepping mats are connected to the top of the said two stepping bars separately; two cylinder dampers are connected between the said main base and the said two stepping bars separately; the features comprises: each of the said stepping bars has several equally spaced lock holes in a row; each of the said stepping mats has a pair of properly spaced connectors at the bottom for fixing each of the said stepping mats on two lock holes of each of the said stepping bars; the swing curve length of the said stepping mats can adjusted by fitting the said connectors of the said stepping mats into different said lock holes of the said stepping bars. 
     
     
         2 . The improved structure of steppers of  claim 1 , wherein each said lock hole of the said stepping bars has at least one fastening groove, and a convex ring is set on each said connector for fitting with the said fastening groove inside the said lock hole. 
     
     
         3 . The improved structure of steppers of  claim 1 , wherein two symmetric fitting boards are set at the bottom of the said stepping mats, which are employed to fit the said stepping mats firmly against both sides of the said stepping bars.