Pedal lifting mechanism for elliptical trainer

Abstract

A pedal lifting mechanism for use in an elliptical trainer includes a base, a lift bracket pivotally connected with the base for supporting pedals of the elliptical trainer thereon, and an inclination adjusting device mounted in front of the lift bracket. When a driver of the inclination adjusting device is actuated, a driving rod of the inclination adjusting device is changed in its length by the driver, such that a frame of the inclination adjusting device, which is pivotally connected between the driving rod and the lift bracket, is driven by the driving rod to move the lift bracket upwards and downwards relative to the base. Thus, the inclination angle of each of two pedals of the elliptical trainer is adjusted to change the paths of the pedals of the elliptical trainer.

What is claimed is:  
     
         1 . A pedal lifting mechanism used in an elliptical trainer, the pedal lifting mechanism comprising:
 a base for being placed on a support surface;   a lift bracket having a rear end pivotally connected with the base; and   an inclination adjusting device including a driver mounted on the base and spaced from a front end of the lift bracket, a driving rod having a front end connected with the driver to be changed in length through an actuation of the driver, and a frame pivotally connected with the front end of the lift bracket and a rear end of the driving rod for driving the lift bracket to pivot upwards and downwards relative to the base through the actuation of the driving rod.   
     
     
         2 . The pedal lifting mechanism as claimed in  claim 1 , wherein the lift bracket includes two lift tubes located at left and right sides of the base, a bridge coupled between front ends of the lift tubes and pivotally connected with the frame, and a connecting tube connected with rear ends of the lift tubes and provided with two ends pivotally connected with the base. 
     
     
         3 . The pedal lifting mechanism as claimed in  claim 1 , wherein the driving rod has a screw rod having one end connected with the driver so as to be rotated by the driver, and a sleeve screwed to the screw rod and pivotally connected with the frame so as to be movable along an axial direction of the screw rod by a rotary motion of the screw rod for driving the frame. 
     
     
         4 . The pedal lifting mechanism as claimed in  claim 1 , wherein the frame includes a main rod pivotally connected between the front end of the lift bracket and the rear end of the driving rod, a shaft connected with a bottom end of the main rod, and two rollers rotatably connected with two ends of the shaft for being abutted against the support surface. 
     
     
         5 . The pedal lifting mechanism as claimed in  claim 1 , wherein the lift bracket is higher in elevation than the base.