Treadmill

Abstract

A treadmill including: a base seat, a first bracket and a second bracket being respectively pivotally mounted on each of two lateral sides of a front section of the base seat, a damper being disposed between a middle section of each second bracket and a rear end of the base seat; and two tread boards, top ends of the first brackets being respectively pivotally connected under front ends of the tread boards, top ends of the second brackets being respectively pivotally connected under middle sections of the tread boards. When treading the tread boards of the treadmill, a forward travel is achieved. Therefore, a user can use the treadmill just like the user naturally steps forward.

1 . A treadmill comprising: 
 a base seat, a first bracket and a second bracket being respectively pivotally mounted on each of two lateral sides of a front section of the base seat, a damper being disposed between a middle section of each second bracket and a rear end of the base seat; and    two tread boards, top ends of the first brackets being respectively pivotally connected under front ends of the tread boards, top ends of the second brackets being respectively pivotally connected under middle sections of the tread boards.    
     
     
         2 . The treadmill as claimed in  claim 1 , wherein bottom ends of the first and second brackets are respectively pivotally connected with the base seat via a first shaft and a second shaft.  
     
     
         3 . The treadmill as claimed in  claim 1 , wherein a column upward extends from the front end of the base seat, the column having a guide wheel, an adjustment member and a guide cord wound on the guide wheel, two ends of the guide cord being respectively fixed on the middle sections of the second brackets, the guide wheel being controllable by an adjustment member.  
     
     
         4 . The treadmill as claimed in  claim 1 , wherein the base seat is substantially I-shaped, including a front beam, a rear beam and a connecting beam connected between the front and rear beams.  
     
     
         5 . The treadmill as claimed in  claim 1 , wherein the damper is a pneumatic cylinder having an extensible piston rod, one end of the pneumatic cylinder being pivotally connected with the rear beam of the base seat, one end of the piston rod being pivotally connected with the middle section of the second bracket via a shaft member.  
     
     
         6 . The treadmill as claimed in  claim 1 , wherein a support bar is disposed under each tread board, the top ends of the first brackets being respectively pivotally connected under front ends of the support bars via two first pins, the top ends of the second brackets being respectively pivotally connected under middle sections of the support bars via two second pins.