House access floor system for noise reduction comprising high rigidity sandwich board

Abstract

An access floors for reducing floor impact sound. The access floor system includes a plurality of supports disposed at regular intervals, and upper plates placed on the supports, each of the upper plates including an upper board, a lower board, and a quadrangular reinforcing frame disposed between the upper board and the lower board. By employing the high rigidity sandwich upper plate, the upper plate can be light and the interval between the supports can be widened in comparison with the conventional access floor system, so that the floor impact sound reduction effect is enhanced. Since sound absorbing material or head insulation material is inserted between the reinforcing members, the sound absorption performance or the heat insulation performance can be enhanced. More particularly, the floor impact sound in apartments is absorbed so that comfortable environment without noise can be realized.

1 . An access floor system comprising: 
 a plurality of supports disposed at regular intervals; and    upper plates placed on the supports, each of the upper plates including an upper board, a lower board, and a quadrangular reinforcing frame disposed between the upper board and the lower board.    
   
   
       2 . The access floor system as set forth in  claim 1 , wherein the reinforcing frame comprises at least one reinforcing member, disposed at the central portion thereof, for increasing rigidity.  
   
   
       3 . The access floor system as set forth in  claim 1 , wherein the upper board, the lower board, and the reinforcing member are made of single or complex material selected from wood, inorganic material, synthetic resin, steel, and aluminum.  
   
   
       4 . The access floor system as set forth in  claim 2 , wherein the reinforcing frame further comprises a sound absorbing material or a heat insulation material inserted between the reinforcing members.  
   
   
       5 . The access floor system as set forth in  claim 4 , wherein the sound absorbing material or the heat insulation material comprises a synthetic fiber selected from the group of glass wool, rock wool, and polyethylene terephthalate, or a plastic foam selected from the group of expanded polystyrene, foamed urethane, and foamed polyvinyl chloride (PVC).  
   
   
       6 . The access floor system as set forth in  claim 1 , wherein the thickness of the upper plates ranges from 20 to 70 mm.  
   
   
       7 . The access floor system as set forth in  claim 1 , wherein the interval between the supports ranges from 600×600 mm to 1,200×1,800 mm.  
   
   
       8 . The access floor system as set forth in  claim 2 , wherein the reinforcing member comprises multi-ply wood.  
   
   
       9 . The access floor system as set forth in  claim 3 , wherein the reinforcing frame further comprises a sound absorbing material or a heat insulation material inserted between the reinforcing members.  
   
   
       10 . The access floor system as set forth in  claim 3 , wherein the reinforcing member comprises multi-ply wood.