Treadmill having vibration damping function for its handlebars

Abstract

A treadmill includes a tread board, two uprights mounted on two opposite sides of the tread board, two handlebars each pivotally mounted on a respective one of the uprights, and two vibration damping devices each mounted between a respective one of the uprights and a respective one of the handlebars to provide a vibration damping effect to the respective handlebar. Thus, each of the vibration damping devices provides a vibration damping effect to the respective handlebar to prevent vibration from being transmitted to the user's two hands directly so as to protect the user's two hands during the exercising process.

1 . A treadmill, comprising: 
 a tread board;    two uprights mounted on two opposite sides of the tread board;    two handlebars each pivotally mounted on a respective one of the uprights;    two vibration damping devices each mounted between a respective one of the uprights and a respective one of the handlebars to provide a vibration damping effect to the respective handlebar.    
   
   
       2 . The treadmill in accordance with  claim 1 , wherein each of the handlebars has a front side pivotally mounted on an upper end of the respective upright.  
   
   
       3 . The treadmill in accordance with  claim 2 , wherein the front side of each of the handlebars is provided with a downward extending pivot ear pivotally mounted on the upper end of the respective upright by a pivot shaft.  
   
   
       4 . The treadmill in accordance with  claim 1 , wherein each of the vibration damping devices is mounted between a mediate portion of the respective upright and a mediate portion of the respective handlebar.  
   
   
       5 . The treadmill in accordance with  claim 4 , wherein the mediate portion of each of the uprights is provided with a forward extending protruding ear, the mediate portion of each of the handlebars is provided with a downward extending protruding ear, and each of the vibration damping devices is mounted between the protruding ear of the respective upright and the protruding ear of the respective handlebar.  
   
   
       6 . The treadmill in accordance with  claim 4 , wherein each of the vibration damping devices includes a hydraulic cylinder retractably mounted between the mediate portion of the respective upright and the mediate portion of the respective handlebar.  
   
   
       7 . The treadmill in accordance with  claim 6 , wherein each of the vibration damping devices further includes an elastic member mounted on the hydraulic cylinder.  
   
   
       8 . The treadmill in accordance with  claim 4 , wherein each of the vibration damping devices includes an elastomeric member mounted between the mediate portion of the respective upright and the mediate portion of the respective handlebar.  
   
   
       9 . The treadmill in accordance with  claim 8 , wherein the elastomeric member is made of rubber material.  
   
   
       10 . The treadmill in accordance with  claim 8 , wherein the elastomeric member is made of plastic material.  
   
   
       11 . The treadmill in accordance with  claim 8 , wherein when a user's two hands apply a force on the handlebars, each of the handlebars is pivoted relative to the respective upright, so that the handlebars are movable upward and downward to correspond to upward and downward movement of the user's two hands.  
   
   
       12 . The treadmill in accordance with  claim 11 , wherein each of the vibration damping devices provides a vibration damping effect to the respective handlebar to prevent vibration from being transmitted to the user's two hands directly so as to protect the user's two hands.