Nonskid Spike Structure

Abstract

A nonskid spike structure is molded with the sole of a snowshoe or particular nonskid shoe, mainly comprising a large top end plate on the top edge of a metal spike body at the sole face and a middle plate with a smaller diameter spaced apart therefrom and positioned below the lower edge thereof, thereby forming a double-layer top edge. A central spike rod is extended downward with a convex spike head rod from the bottom thereof, allowing it to be inserted in a mold directly and integrated with the rubber sole upon molding, achieving the simple positioning in the mold and molding without deflection upon pressing, thereby allowing sole rubber material to cover the spike body directly. Whereby, the spike will not take off through the stable combination of the double plate edge and sole material, achieving the nonskid and safe effect upon the treading of the spikes on an icy surface.

I claim: 
     
         1 . A nonskid spike structure, comprising a spike body premade of metal, capable of being integrated with a rubber sole body and used for nonskid purpose, and a spike head rod protruded from a bottom end thereof, wherein a top end of a central spike rod of said spike body is configured with a top end plate, a middle plate spaced apart from said top end plate is put around a middle section of said spike rod and thus positioned, thereby forming said anti-take off spike structure with a double-layer spaced large head plate edge. 
     
     
         2 . The structure according to  claim 1 , wherein a through hole is opened at a center of said middle plate, and a protruded annular flange surface is formed on one side of said middle plate for insertion, pressing against and positioning. 
     
     
         3 . The structure according to  claim 1 , wherein said spike rod is set to a stepped rod type, allowing said middle plate to be engaged with and positioned at a stepped end edge. 
     
     
         4 . The structure according to  claim 1 , wherein an elastic element is put around a upper half section of said spike rod at a lower edge of said top end plate. 
     
     
         5 . The structure according to  claim 1 , wherein spacing between said top end plate and middle plate is ranged from 1.0 to 3.5 mm. 
     
     
         6 . The structure according to  claim 1 , wherein equally separate through holes are configured on a plate face of said end plate. 
     
     
         7 . The structure according to  claim 2 , wherein equally separate incision lines for hole expansion are configured on said through hole at said center of said middle plate.