| 摘要 |
PROBLEM TO BE SOLVED: To prevent falling of a winding drum in a building shutter device in which the winding drum, around which a shutter curtain is wound, is rotatably supported by a pair of right and left mounting brackets arranged above an opening.SOLUTION: A fall restricting wire 13, which obliquely connects at least between the upper other end side of a mounting bracket 2 on a side where an opening/closing machine 6 is not installed and an inner part in a right and left direction of a horizontal member 10e forming a lintel part 10, is installed with a space not interfering with the rotation of the winding drum 5. |
