Door coordinators are used to control the closing sequence of a pair of doors when both leaves are furnished with latching hardware and one leaf latches into the other of has an overlapping astragal. Typically, these openings will have a vertical rod exit device or automatic flush bolts installed on

Fire rated doors can meet fire resistance stability, integrity and insulation for a certain period of time. It is a fireproof partition with certain fire resistance, such as in fire compartments, evacuation stairwells, and vertical shafts. In addition to the function of ordinary doors, fire doors have the function of preventing the spread of fire and the spread of smoke, which can prevent the spread of fire for a certain period of time and ensure the evacuation of personnel.

The door coordinator is a locking mechanism arranged on a locking shaft and a small shaft. One end of the locking plate of the locking mechanism is in contact with the inner end of the release shaft. The outer end of the release shaft is a touch end which can be extended outside the shell and touched by a door leaf. One end of the rocker arm is arranged on the locking shaft, the other end is provided with a touch device which can be touched by another door leaf, and the locking shaft and the small shaft are respectively provided with a locking recovery torsion spring. The utility model has a simple and compact structure, solves the problem of the sequence of closing the double fire doors, and makes the fire doors play a reliable role of fire prevention and partition. When the double fire doors are closed, they shall be closed in order to ensure their fire and smoke prevention functions. The fire door can be closed as required to meet the fire protection requirements.