Elliptical excise apparatus capable of increase exercise distance

Abstract

An elliptical exercise apparatus includes a base with two handle bars at a front thereof and two pedal bars pivotally connected to the handle bars. An extending mechanism is provided between a wheel on a rear frame of the base and the pedal bars. The extending mechanism includes an inner link and an outer link pivoted on a rear of a pedal on the pedal bar, a connection bar pivotally connected to the outer link, and a small crank received in a rear pivoting portion of the pedal bar. With the multi-link extending mechanism, the elliptical exercise apparatus of the present invention may provides a greater exercise distance.

1 . An elliptical exercise apparatus, comprising:
 a base constructed by a plurality of base bars and frames;   a handle unit pivotally connected to the base;   a stepping unit, which is provided on two sides of the base and connected to a bottom of the handle unit, having a pedal;   a rotation unit, which is pivoted on the base for free rotation, having a crank connected to the stepping unit; and   an extending mechanism, through which the crank of the rotation unit is connected to the stepping unit, including a link, which is pivotally connected to the stepping unit directly or indirectly, having an end pivoted on the pedal to move the pedal, a connection bar having an end pivotally connected to the link opposite the pedal, and a small crank connecting the connection bar and the crank to increase an exercise distance of the stepping unit.   
     
     
         2 . The elliptical exercise apparatus as defined in  claim 1 , wherein the rotation unit is provided at a rear of the base to form a rear-driving type elliptical exercise apparatus. 
     
     
         3 . The elliptical exercise apparatus as defined in  claim 1 , wherein the rotation unit is provided at a front of the base to form a front-driving type elliptical exercise apparatus. 
     
     
         4 . The elliptical exercise apparatus as defined in  claim 2 , wherein the base includes a front base bar, a rear base bar, a middle base bar connecting the front base bar and the rear base bar, a front frame connected to the front base bar, a rear frame connected to the rear base bar, an auxiliary bar connected to the rear frame, and a handle link vertically connected to the auxiliary bar for pivotal connection with the handle unit. 
     
     
         5 . The elliptical exercise apparatus as defined in  claim 4 , wherein the handle unit includes two handle bars connected to opposite ends of the handle link and having bottom ends thereof pivotally connected to the stepping unit, and a handle on a top end of the auxiliary bar. 
     
     
         6 . The elliptical exercise apparatus as defined in  claim 1 , wherein the stepping unit includes a pedal bar pivotally connected to the handle unit, on which the pedal is slidably provided. 
     
     
         7 . The elliptical exercise apparatus as defined in  claim 4 , wherein the rotation unit includes a transmission axle, a core axle, and a wheel, and the rear frame is provided with a U-shaped connection piece to pivot the wheel thereon, and the core axle is received in the transmission axle with opposite end thereof connected to the crank and the wheel respectively. 
     
     
         8 . The elliptical exercise apparatus as defined in  claim 1 , wherein the link includes an inner link and an outer link. 
     
     
         9 . The elliptical exercise apparatus as defined in  claim 1 , further comprising an adjusting device between the link and the connection bar. 
     
     
         10 . The elliptical exercise apparatus as defined in  claim 9 , wherein the adjusting device includes a motor for elevation. 
     
     
         11 . The elliptical exercise apparatus as defined in  claim 9 , wherein the adjusting device includes a triangular plate with an arched slot, and the link has a plurality of adjustable holes to be fitted with the connected bar respectively. 
     
     
         12 . The elliptical exercise apparatus as defined in  claim 9 , wherein the adjusting device includes a fan plate, which has an arched slot and adjustable holes, and a pivoting plate connecting the fan plate and the connection bar. 
     
     
         13 . The elliptical exercise apparatus as defined in  claim 10 , wherein the adjusting device includes a moon-shaped plate with a plurality of adjustable holes to be fitted with the connection bar respectively. 
     
     
         14 . The elliptical exercise apparatus as defined in  claim 10 , wherein the adjusting device includes a retractable tube, which includes an inner tube and an outer tube fitted to each other and having a plurality of adjustable holes thereon, connecting the link and the connection bar.