Exercising machine with adjustable stride length and height

Abstract

An exercising machine includes a base frame, a rotary member, left and right rocker link units, left and right cross links, and front and rear coupling units. The rotary member is mounted rotatably on the base frame. The left and right rocker link units are coupled pivotably to the base frame. The front coupling unit couples pivotably the rotary member to a selected one of engaging segments of each of the left and right cross link units to thereby permit adjustment of stride height. The rear coupling unit couples pivotably each of the left and right cross links to a selected one of engaging segments of each of the left and right rocker link units to thereby permit adjustment of stride length.

1 . An exercising machine, comprising:
 a base frame;   a resistance-imparting rotary member mounted rotatably on said base frame, and having left and right sides;   left and right rocker link units, each of which is coupled pivotably to said base frame and each of which has a plurality of engaging segments disposed along the length thereof;   left and right foot pedals, each of which is coupled pivotably to a respective one of said left and right rocker link units;   left and right cross links, each of which has a plurality of engaging segments disposed along the length thereof;   a front coupling unit including left and right couplers, each of which couples pivotably a respective one of said left and right sides of said rotary member to a selected one of said engaging segments of a respective one of said left and right cross links; and   a rear coupling unit including left and right couplers, each of which couples pivotably the respective one of said left and right cross links to a selected one of said engaging segments of the respective one of said left and right rocker link units.   
     
     
         2 . The exercising machine as claimed in  claim 1 , wherein each of said left and right couplers of said front coupling unit includes
 a front pivoting member,   a front pivot joint that interconnects the respective one of said left and right sides of said rotary member and said front pivoting member, and   a front fastening member that is operable so as to fasten releasably said front pivoting member to the selected one of said engaging segments of the respective one of said left and right cross links.   
     
     
         3 . The exercising machine as claimed in  claim 2 , wherein each of said engaging segments of each of said left and right cross links is formed with an engaging hole, said front fastening member of each of said left and right couplers including
 a front bolt that is provided on said front pivoting member of the respective one of said left and right couplers, and that extends through said engaging hole in the selected one of the engaging segments of the respective one of said left and right cross links, and   a front nut that engages threadedly said front bolt.   
     
     
         4 . The exercising machine as claimed in  claim 1 , wherein each of said left and right couplers of said rear coupling unit includes
 a rear pivoting member,   a rear pivot joint that interconnects the respective one of said left and right cross links and said rear pivoting member, and   a rear fastening member that is operable so as to fasten releasably said rear pivoting member to the selected one of said engaging segments of the respective one of said left and right rocker link units.   
     
     
         5 . The exercising machine as claimed in  claim 4 , wherein each of said engaging segments of each of said left and right rocker link units is formed with an engaging hole, each of said rear fastening member of each of said left and right couplers including
 a rear bolt that is provided on said rear pivoting member of a respective one of said left and right couplers, and that extends through said engaging hole in the selected one of said engaging segments of the respective one of said left and right rocker link units, and   a rear nut that engages threadedly said rear bolt.   
     
     
         6 . The exercising machine as claimed in  claim 1 , further comprising left and right handle units, each of which is coupled to a respective one of said left and right rocker link units so to be co-rotatable therewith, each of said left and right handle units including
 a tubular member that extends from the respective one of said left and right rocker link units,   a handle that extends removably into said tubular member, and   a retainer that extends into said tubular member and that engages said handle.   
     
     
         7 . The exercising machine as claimed in  claim 1 , wherein each of said front and rear coupling units defines a pivot axis, said pivot axis of said front coupling unit being disposed above said pivot axis of said rear coupling unit. 
     
     
         8 . The exercising machine as claimed in  claim 1 , wherein said left and right rocker link units constitute a four-bar linkage. 
     
     
         9 . The exercising machine as claimed in  claim 1 , wherein each of said left and right foot pedals includes
 a bottom part that is mounted securely on the respective one of said left and right rocker link units,   a cushioning member that is disposed on said bottom part, and   a top part that is disposed on said cushioning member and that is coupled pivotably to said bottom part.