Physical trainer having pedals moving along an elliptical route

Abstract

Disclosed is a physical trainer having pedals moving along an elliptical route with little shock applied to a user's knee joints even though the user takes exercise for a long time. In the physical trainer having the pedals moving along the elliptical route, rotary grips are connected to pedal supporting means by connecting members of a joint type, shock absorbing bars are mounted between the connecting members and the rotary grips, and thereby the shock absorbing bars are in interlock with a motion of the pedals and perform a repeated piston motion that the shock absorbing bars are inserted into or removed from the connecting members. In the physical trainer, braking means may be further include for adjusting a rotational speed of a sprocket connected to the pedal supporting means. According to the physical trainer, the shock transferred to the user's knee joints is considerably reduced in comparison with the typical physical trainer, and thus, the user can enjoy exercise in comfort for a long time.

What is claimed is:  
     
         1 . A physical trainer having pedals moving along an elliptical route when a user steps the pedals, the physical trainer comprising: 
 a base;    a frame mounted on an upper surface of the base;    a rotary shaft rotatably mounted on a supporting member at the upper surface of the base, the rotary shaft passing through a sprocket mounted at an external surface of the rotary shaft;    a pair of first arms connected on both sides of the rotary shaft;    a pair of pedal supporting means having an end connected to the first arm and the other end connected to a rotary grip connecting member;    a pair of pedals mounted on the pedal supporting means respectively; and    a pair of rotary grips having an end connected to the rotary grip connecting member and a central portion connected to the frame by a fixing member,    wherein the respective ends of the rotary grips are connected to the rotary grip connecting members by shock absorbing bars, and the shock absorbing bars perform a repeated piston motion in such a manner that the shock absorbing bars are inserted into or removed from the rotary grip connecting members in interlock with the movement of the pedals.    
     
     
         2 . The physical trainer as claimed in  claim 1 , further comprising braking means for adjusting a rotational speed of the sprocket connected to the rotary shaft.