Rocking exercise device

Abstract

Rocking exercise device including at least one rocking member having an arched bottom face. A top face of the rocking member is provided with a front step board and a rear step board oppositely inclined toward the center. The opposite ends of the front step board and rear step board of the rocking member respectively have a downward extending front projecting block and a rear projecting block. The rocking member is equipped with two fastening straps at the front and rear step boards. A shaft hole transversely passes through the rocking member. A center point of the shaft hole and a center point of the arch of the bottom face of the rocking member are not at the same position. One end of a shaft rod is fitted in the shaft hole and the other end of the shaft rod is fitted in the shaft hole of an adjacent rocking member.

What is claimed is:  
     
         1 . A rocking exercise device comprising at least one rocking member having an arched bottom face adapted to contact with a support face, a top face of the rocking member being provided with a front step board and a rear step board oppositely inclined toward the center for a user's foot to step thereon, the rocking member being formed with a shaft hole transversely passing through the rocking member, a center point of the shaft hole and a center point of the arch of the bottom face of the rocking member being not at the same position, whereby the rocking member will eccentrically swing, one end of a shaft rod being fitted in the shaft hole, the other end of the shaft rod being fitted in the shaft hole of an adjacent rocking member.  
     
     
         2 . The rocking exercise device as claimed in  claim 1 , wherein opposite ends of the front step board and rear step board of the rocking member respectively have a downward extending front projecting block and a rear projecting block, free ends of the front and rear projecting blocks respectively having stopper sections tangential to the arch of the bottom face, each rocking member being equipped with two fastening straps at the front and rear step boards.  
     
     
         3 . The rocking exercise device as claimed in  claim 2 , wherein an arched leaf spring is disposed under the bottom of the rocking member, two ends of the leaf spring being respectively formed with two insertion sections in which the front and rear projecting blocks of the rocking member are inserted.  
     
     
         4 . The rocking exercise device as claimed in  claim 2 , wherein a slip-proof cap is fitted on each stopper section to contact with the ground and increase frictional force against the ground.  
     
     
         5 . The rocking exercise device as claimed in  claim 2 , wherein the fastening strap has loop-hook tape and is wound over the foot of a user to fix the foot on the rocking member.  
     
     
         6 . The rocking exercise device as claimed in  claim 1 , wherein a sleeve is fitted around a middle section of the shaft rod to stop the opposite sides of the two rocking members and space the two rocking members from each other by a certain distance, one end of the shaft rod having a stop flange, while the other end of the shaft rod being formed with a thread on which a nut is screwed to fix the shaft rod on the two rocking members.  
     
     
         7 . The rocking exercise device as claimed in  claim 1 , wherein multiple domed protuberances are distributed over the front and rear step boards to provide massaging effect for the user's feet.  
     
     
         8 . The rocking exercise device as claimed in  claim 1 , further comprising a frame body on which two rocking members are pivotally disposed, a pivot seat being disposed on a middle section of the frame body, the pivot seat having three pivot plates at equal intervals, each pivot plate having a circular hole, a middle pivot plate dividing the pivot seat into two spaces in which the rocking members are respectively pivotally disposed, the shaft rod of the rocking members extending through the circular holes of the three pivot plates, two ends of the shaft rod being respectively fixed in the circular holes of two outer pivot plates, whereby the rocking members can swing back and forth on the pivot seat of the frame body, the frame body having an upright stem at one end opposite to the pivot seat, the upright stem being telescopic to adjust the length in accordance with the height of a user, a handlebar being transversely disposed on top end of the stem for a user to hold.  
     
     
         9 . The rocking exercise device as claimed in  claim 1 , wherein two transverse beams are connected between two rocking members respectively under the front and rear step boards thereof.