Terrain-adaptive weight training sled with free steering

Abstract

A terrain-adaptive weight training sled with free steering, having a main frame with a first end and a second end remote from each other, a push frame erected on the first end, a resistance wheel rotatable disposed on the first end and assembled with a damping structure for retarding the resistance wheel, two omni-wheels, in a rotatable and freely steerable state, disposed on both sides of the second end, and a pulling member having a connecting end, a user-operated end, and a flexible extension section, wherein the connecting end being used to connect with the second end of the main frame and the user-operated end being used for the user to apply force for pulling, whereby when the user pulls the second end to turn by means of the pulling member, the two omni-wheels are driven to produce a turning motion thereafter.

I claim: 
     
         1 . A terrain-adaptive weight training sled with free steering, comprising:
 a main frame, having a first end and a second end remote from each other;   a push frame, erected on the first end of the main frame;   a resistance wheel, rotatably disposed on the first end and assembled with a damping structure to provide a damping effect to retard the rolling of the resistance wheel;   two omni-wheels, in a rotatable and freely steerable state, disposed on both sides of the second end, allowing the main frame to be displaced by utilizing the rolling of each omni-wheel and the resistance wheel; and   a pulling member, having a connecting end, a user-operated end, and an extension section between the connecting end and the user-operated end, wherein the connecting end being used to connect with the second end of the main frame, and the user-operated end being used for a user to apply a force for pulling; whereby, when the user guides the second end to turn by means of the pulling member, the two omni-wheels are driven to produce a turning motion.   
     
     
         2 . The terrain-adaptive weight training sled with free steering according to  claim 1 , wherein the main frame is further provided with a weight loading holder that allows the user to selectively load a weight member. 
     
     
         3 . The terrain-adaptive weight training sled with free steering according to  claim 1 , wherein a pulling connection portion is provided at the second end of the main frame for connection to the connecting end of the pulling member. 
     
     
         4 . The terrain-adaptive weight training sled with free steering according to  claim 1 , wherein the pulling connection portion includes two spaced apart clasps that allow the connecting end of the pulling member to be aligned accordingly, resulting in the formation of two separate hooking cables. 
     
     
         5 . The terrain-adaptive weight training sled with free steering according to  claim 1 , wherein the user-operated end of the pulling member is of one of the following types: a hand loop, a chest strap, a shoulder strap, a girdle, or a lasso. 
     
     
         6 . The terrain-adaptive weight training sled with free steering according to  claim 1 , wherein, the second end of the main frame is erected with two handlebars in a spaced-apart configuration. 
     
     
         7 . The terrain-adaptive weight training sled with free steering according to  claim 1 , wherein the two handlebars are provided for coupling the connecting end of the pulling member to the second end of the main frame.