| 摘要 |
The protective door consists of a door casing (11) and a door body (61), both being hinged with each other with a hinge (67). The casing (11) comprises frame members (20,30,40,50) respectively for left and right and top and bottom sides, the interior of them being filled with a common filler (18). The frame members however are dual-structured to provide an impact absorbing cavity defined between the outer case (12 or 19) and the inner case (15 or 22) for prevention of deformation. The silicon seal for the outer casing also absorbs impact from the door body heavily filled with the filler with reinforcing bars when closing the door. The door minimizes deformation to maintain the original shape for longevity of its use.
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