Trace increasing mechanism for elliptical exerciser

Abstract

An elliptical exerciser includes two swing arms pivotably connected to a mediate portion of a post on the base and two slidable link units are pivotably connected to two respective lower ends of the two swing arms. Each slidable link unit has a first link and a second link wherein two connection parts respectively extend from two ends of the first link at an angle. The first end of the first link is pivotably connected to the wheel. Two ends of the second link are pivotably connected to the two connection parts by two connection members which allow the second links to be pivotable relative to the two connection parts. The two second links have two pedals connected thereto so that the pedals can travel a further distance relative to the first links so as to increase the distance of the ling axis of the oval trace.

1 . An elliptical exerciser comprising:
 a base having a post on a first end thereof and a wheel connected to a second end of the base, two swing arms pivotably connected to a mediate portion of the post and two slidable link units pivotably connected to two respective lower ends of the two swing arms, each slidable link unit having a first link and a second link, a first connection part and a second connection part respectively extending from a first end and a second end of the first link at an angle, the first end of the first link pivotably connected to the wheel, a first connection member pivotably connected between the first connection part and a first end of the second link, a second connection member pivotably connected between the second connection part and a second end of the second link, the two lower ends of the swing arms connected to the two respective second connection member, each of the second links being parallel to the first link corresponding thereto and pivotable relative to the first and second connection parts, and   two pedals connected on the two second links.   
   
   
       2 . The exerciser as claimed in  claim 1 , wherein each of the first connection member is substantially an H-shaped member which includes a top transverse tube, a bottom transverse tube and a connection bar connected perpendicularly between the top transverse tube and the bottom transverse tube, the top transverse tube is pivotably connected to the first connection part and the bottom transverse tube is pivotably connected to the first end of the second link, each of the second connection member is substantially an H-shaped member which includes a top transverse tube, a bottom transverse tube and a connection bar connected perpendicularly between the top transverse tube and the bottom transverse tube, the top transverse tube is pivotably connected to the second connection part and the bottom transverse tube is pivotably connected to the second end of the second link. 
   
   
       3 . The exerciser as claimed in  claim 2 , wherein two parallel plates extend axially from the first and second ends of the second link, the two respectively bottom tubes are connected between the two parallel plates. 
   
   
       4 . (canceled)