| 摘要 |
PURPOSE: A double folding door having a secondary closing member is provided to enhance convenience for a user and adjust a door by having a secondary closing member pressing a resistance section to completely open the door when a door plate is electrically spread. CONSTITUTION: A double folding door having a secondary closing member comprises a door plate(10) and a secondary closing device(20). The door plate is connected to be consecutively folded by a hinge and installed inside a frame of a lattice shape. The secondary closing device generates a pressurization force so that the door plate is completely spread on a rail. The secondary closing device comprises an operation rod(22), a mover(38), a pressure piece(24), a driving pulley(30), a motor(32), and a key input unit. |
