| 摘要 |
PROBLEM TO BE SOLVED: To prevent the looseness of a door-end door of a folding door from occurring under a closed state by a simple structure. SOLUTION: This automatic folding door has a shaft-side door 6 swung centering around a shaft 6A, a door-end door 11 being connected to the shaft- side door 6 in a bendable manner through a hinge 7 and having guide rollers 10 at an upper end, a guide rail 9, into which the guide rollers 10 are inserted, and a driving means pushing the shaft-side door 6 with specified pushing force under a closed state. A lever mechanism converting pushing force working to the shaft-side door 6 from the driving means under the closed state into working force pushing the guide rollers 10 for the door-end door against the guide rail 9 is mounted. |
