| 摘要 |
PROBLEM TO BE SOLVED: To reduce the leftward and rightward play of the door of a walk-in deep freezer, etc., having a drawer door by stabilizing the distance between fixing rollers provided on the left and right sides of an opening. SOLUTION: Both the front and rear ends of a reinforcing body 18 erected between the ceiling and bottom of a heat insulating box body composed of an outer box 2, an inner box 3, a heat insulating material 4, etc., are brought into contact with and fixed to a roller fitting 17 and one end of the bearing shaft 15 of a fixing roller 15 is passed through the inner box 3 and roller fitting 17 and fixed with a nut 19. Then the space between the outer box 2 and inner box 3 is filled with the foamed insulating material 4. Therefore, the deformation of the inner box 3 becomes smaller and the distance between the fixing rollers 15 is stabilized.
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