HINGE DEVICE WITHSTANDING HIGH LOAD, AND FIRE DOOR STRUCTURE PROVIDED WITH THE SAME

摘要

PROBLEM TO BE SOLVED: To develop a hinge device withstanding a high load and a fire door structure provided with the same, for meeting practical requirements such as: securing sufficient strength so that the hinge device may be applied to a fire door required to withstand a high load; preventing a hinge member from being exposed when the door is closed; and keeping a configuration thereof simple, thereby offering a secondary effect of facilitating installation work.;SOLUTION: A hinge device withstanding a high load includes a frame-side hinge plate 2, a relay hinge plate 3, and a door-side hinge plate 4. The relay hinge plate 3 and the door-side hinge plate 4 are pivotally rotated so as to realize a shifted-and-protruded state of the relay hinge plate 3 outside of the frame on a shifted hinge pin 6 side, and a half-rotation-allowed state for the door-side hinge plate 4.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2016,JPO&INPIT