| 摘要 |
PURPOSE: A dual door opening and closing system is provided to rapidly open and close a door in the normal times by indirectly connecting a door closer to the door and to rapidly close the door in a fire. CONSTITUTION: A dual door opening and closing system comprises a pair of left and right doors(10), a pair of left and right arm members(20), closer members, and link members. The left and right doors are formed on one surface of a main body. The left and right arm members simultaneously open and close the left and right doors. The closer members are fixed to specific positions on the left and right arm members using thermo-sensitive pulling members. The link members connect the closer members to the left and right arm members. |
