Buffering unit for stepper exerciser

Abstract

A stepper exerciser includes a base to which two pedal supports are respectively and pivotably connected, and a buffering unit is connected between the two pedal supports and the base. The buggering unit includes two elongate resilient boards which support the two pedal supports so that when the two pedal supports are alternatively pivoted downward, the two resilient boards are deformed alternatively and store energy which bounce the pedal supports upward when the two pedal supports are alternatively released.

What is claimed is: 
     
         1 . A stepper exerciser comprising:
 a base;   two pedal supports respectively and pivotably connected to the base, and   a buffering unit having two elongate resilient boards which support the two pedal supports, when the two pedal supports are alternatively pivoted downward, the two flexible boards are deformed alternatively, when the two pedal supports are alternatively released, the two resilient boards bounce alternatively to pivot the two pedal supports upward.   
     
     
         2 . The stepper exerciser as claimed in  claim 1 , wherein each of the two resilient boards has a first end and a second end, the first end of each of the two resilient boards is connected to the base, the second end of each of the two resilient boards supports at an underside of the pedal support corresponding thereto. 
     
     
         3 . The stepper exerciser as claimed in  claim 2 , wherein each of the two resilient boards has a first end and a second end, the two respective first ends of the two resilient boards are supported by the base, the two respective second ends of the two resilient boards are respectively supported at the underside of the two pedal supports. 
     
     
         4 . The stepper exerciser as claimed in  claim 2 , wherein the two respective first ends of the two resilient boards are connected to a mount which is fixed to the base. 
     
     
         5 . The stepper exerciser as claimed in  claim 4 , wherein the two respective first ends of the two resilient boards are merged together to form a V-shaped portion and connected to the mount, the two respective second ends of the two resilient boards extend upward. 
     
     
         6 . The stepper exerciser as claimed in  claim 5 , wherein a rounded angle is defined at the V-shaped portion and between the two first ends of the two resilient boards. 
     
     
         7 . The stepper exerciser as claimed in  claim 5 , wherein a neck extends from the mount and is connected to the V-shaped portion, 
     
     
         8 . The stepper exerciser as claimed in  claim 7 , wherein a thickness of the neck is 0.85 to 1.18 times of a thickness of each of the two resilient boards. 
     
     
         9 . The stepper exerciser as claimed in  claim 1 , wherein the two resilient boards are located symmetrically to the base, the two pedal supports are located symmetrically to the base. 
     
     
         10 . The stepper exerciser as claimed in  claim 1 , wherein the two resilient boards both are elongate and resilient boards. 
     
     
         11 . The stepper exerciser as claimed in  claim 1 , wherein the two resilient boards both are made by metal. 
     
     
         12 . The stepper exerciser as claimed in  claim 1 , wherein each of the two pedal supports has a contact member located at the underside thereof, the contact members each have a ridge which contacts a top of the resilient board corresponding thereto. 
     
     
         13 . The stepper exerciser as claimed in  claim 1 , wherein each of the contact members is a roller and the ridge protrudes from a periphery of the roller, the rollers are respectively connected to the underside of the two pedal supports.