Insulation Box Having Two Boards and a Spring Disposed Between the Boards

Abstract

An insulation box includes: a case body with a receiving space and an opening, and a door board for covering the opening; wherein the door board includes stacked inner and outer boards, and springs are disposed therebetween to provide buffering and tightening effects. When the opening is covered by the door board for a signal test, the inner board can be properly adjusted to completely seal up the opening of the insulation box, thereby preventing signals from being lost.

1 . An insulation box, comprising:
 a case body including a receiving space and an opening toward external environment; and   a door board closable and hinged to one side of the case body for closing up the opening, the door board including an outer board disposed outwardly, an inner board disposed inwardly, and one spring disposed between the inner board and the outer board for maintaining an elastic yaw allowance for the inner board.   
     
     
         2 . The insulation box of  claim 1 , wherein inner walls of the insulation box comprises an insulation material. 
     
     
         3 . The insulation box of  claim 1 , further comprising connecting elements for connecting the inner board and the outer board. 
     
     
         4 . The insulation box of  claim 3 , wherein each of the connecting elements includes a fixing sheet and a cylinder axially disposed on the fixing sheet, the fixing sheet fixed onto the outer board for enabling one end of the cylinder to be embedded in the outer board, and the other end of the cylinder to be connected to the inner board, and having the cylinder to be exposed between the inner board and the outer board, thereby keeping a preset distance between the inner board and the outer board. 
     
     
         5 . The insulation box of  claim 4 , wherein the outer board further comprises notches, one end of the cylinder is disposed inside the notch, and the fixing sheet covers the notch, thereby having the end of the cylinder to be embedded in the outer board. 
     
     
         6 . The insulation box of  claim 5 , wherein the notch has a depth greater than a height of the end of the cylinder embedded in the notch. 
     
     
         7 . The insulation box of  claim 1 , further comprising an insulation board disposed on the inner board, wherein the inner board is located between the insulation board and the outer board, and has an area greater than an area of the insulation board. 
     
     
         8 . The insulation box of  claim 1 , further comprising a latch and a mortise disposed on the outer board and the case body, respectively, for locking up and fixing the door board as in a closing state. 
     
     
         9 . The insulation box of  claim 8 , wherein the latch is a pneumatic latch. 
     
     
         10 . The insulation box of  claim 1 , further comprising hinges connecting the door board and the main box. 
     
     
         11 . The insulation box of  claim 1 , wherein the door board further comprises three springs, and the four springs are disposed at four corners of the door board, respectively.