| 摘要 |
A security type upper pivot hinge is provided to prevent the separation of a hinge shaft from an upper rotary plate using an upper fixing plate by keeping a locking bolt, a screw, etc. concealed while a door is closed. The security type upper pivot hinge comprises an upper fixed plate composed of a fixture fixed to the upper part of a doorframe and an extension provided with a through hole to insert a hinge shaft(30), an upper rotary plate(20) composed of a fixture(21) provided with many assembling holes(230) and fixed to the upper part of a door with bolts, an extension(22) provided with an insertion hole(210) and extended to one side of the fixture and a reinforcement plate(23) attached to the lower part of the extension, and a fixing plate(40) inserted to a guide groove of the extension and provided with a hanging projection(420) to fix to a fixing groove(310) of the hinge shaft and a coupling hole(410) to couple with the upper rotary plate. |
