Filling structure

Abstract

A filling structure 10 is a structure in which a filling material 12 having a higher impact energy absorbing performance is inserted into the inner part of a hollow member 11, and the filling material 12 so inserted is fixed to the hollow member 11 with an adhesive layer 13 resulting when the filling material 12 is heated to expand and is cooled to set thereafter.

1 . A filling structure comprising a hollow member and a filling material filled in the inner part of the hollow member, the filling material having a higher impact energy absorbing performance, wherein the filling material is fixed to the hollow member with an adhesive having a property that the adhesive expands when heated.  
   
   
       2 . A filling structure as set forth in  claim 1 , wherein the adhesive has a property such that the adhesive melts and expands by being heated for 10 to 30 minutes at a temperature of 140° C. to 190° C., and cured after cooling.  
   
   
       3 . A filling structure as set forth in  claim 2 , wherein the adhesive has a property that the adhesive expands in volume by at least 10% in the process of melting, expanding and curing.  
   
   
       4 . A filling structure as set forth in  claim 1 , wherein the adhesive is a sheet-like adhesive.  
   
   
       5 . A filling structure as set forth in  claim 1 , wherein the heating of the adhesive is attained using drying heat applied after electro-deposition coating.  
   
   
       6 . A filling structure as set forth in  claim 2 , wherein the adhesive is a sheet-like adhesive.  
   
   
       7 . A filling structure as set forth in  claim 2 , wherein the heating of the adhesive is attained using drying heat applied after electro-deposition coating.  
   
   
       8 . A filling structure as set forth in  claim 3 , wherein the adhesive is a sheet-like adhesive.  
   
   
       9 . A filling structure as set forth in  claim 3 , wherein the heating of the adhesive is attained using drying heat applied after electro-deposition coating.  
   
   
       10 . A filling structure as set forth in  claim 4 , wherein the heating of the adhesive is attained using drying heat applied after electro-deposition coating.