Cap stacking structure of nail gun

Abstract

A cap stacking structure comprises a plurality of caps. Each cap has at least one axial ribs for stacking the plurality of caps together so that the plurality of caps are stacked along an axial line passing through an axial center of each cap; and gaps between two adjacent caps have a predetermined length. Each rib is extended from a periphery of each cap. One side of each cap is formed with a protruding round end and another side of each cap is formed with a groove having a shape with respect to the protruding round end. Thereby, the plurality of caps are stacked by the coupling of the protruding round end and groove.

What is claimed is:  
     
         1 . A cap stacking structure comprising a plurality of caps, each cap having at least one axial rib for stacking the plurality of caps together so that the plurality of caps are stacked along an axial line passing through an axial center of each cap; and gaps between two adjacent caps having a predetermined length.  
     
     
         2 . The cap stacking structure as claimed in  claim 1 , wherein each rib is extended from a periphery of each cap.  
     
     
         3 . The cap stacking structure as claimed in  claim 1 , wherein a bottom center of each cap is formed with a protruding round end and a top center of each cap is formed with a groove having a shape with respect to the protruding round end so that the plurality of caps are stacked by the coupling of the protruding round end and the groove.  
     
     
         4 . The cap stacking structure as claimed in  claim 3 , wherein an annular protruding edge is protruded from an opening of the groove of each cap.  
     
     
         5 . The cap stacking structure as claimed in  claim 1 , wherein a top center of each cap is formed with a protruding round end and a bottom center of each cap is formed with a groove having a shape with respect to the protruding round end so that the plurality of caps are stacked by the coupling of the protruding round end and the groove.  
     
     
         6 . The cap stacking structure as claimed in  claim 5 , wherein an annular protruding edge is protruded from an opening of the groove of each cap.  
     
     
         7 . The cap stacking structure as claimed in  claim 1 , wherein a through hole is formed at a center of each cap.