| 摘要 |
PROBLEM TO BE SOLVED: To provide a folding door that can improve design and reduce costs by assisting in function of a conventional stopper member by other members (mechanism).SOLUTION: A guide roller 23 is provided movably in an up/down direction T1 to take a first posture in which the guide roller is stored in a doorcase 20 or mullion 5 of a door body, a second posture in which the guide roller projects downward from the door body or a lower end part of the mullion 5 and engages a guide rail 13 to be supported movably along the guide rail 13, and a third posture in which the guide roller projects downward more as compared with the second posture, and is locked to a sill 6 to restrict a movement of the door body or mullion 5 according to an operation of operation means 25. |
