| 摘要 |
PROBLEM TO BE SOLVED: To provide a device capable of automatically opening and closing plural door panels and housing the door panels into one door pocket, and capable of manually opening, closing and housing the door panels in an emergency. SOLUTION: This device has an upper part of a door pocket, a sash bar of the upper part of the door panel and a linear motor formed of the sash bar and a head jamb, and opens, closed plural door panels and houses these door panels into one door pocket. |
