| 摘要 |
PROBLEM TO BE SOLVED: To provide a hinge structure for a main door which is robust and a high crime prevention nature is ensured against a destructive behavior done with a bar, a power saw, and the like. SOLUTION: A hinge plate 10 is fixed to the top board of a main body 1 by protruding a tip portion 10a to a main door 2 at its upper surface at a suspending side. The main door at its upper side is hinge-coupled, through a hinge shaft 11 penetrated through the hinge plate at its tip portion to the main body by means of: installing a hinge cover 13 having a structure formed by superimposing three covers, the upper, the medium, and the lower cover, 13a-13c on the main door at its upper surface by vertically sandwiching the hinge plate at its tip portion for covering; welding, force-fitting the hinge shaft to and in the hinge cover for fixing without removal; loosely fitting a collar 15 to the hinge shaft at its upper portion to engage and insert the collar with and into the shaft hole of the hinge plate. By this structure, the sturdiness is ensured and the anticrime nature is improved with no hinge easily broken even if a tool, including the bar, power saw, and the like is used. COPYRIGHT: (C)2004,JPO&NCIPI
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