| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a winding failure of a cord reel as much as possible, to thereby achieve well aligned winding. SOLUTION: A floor board switch arranged at a lower edge of a shutter curtain and a switching control section are electrically connected to each other via a cord reel 9 disposed at an upper portion of an opening, and a cord 8 is wound on a winding drum of the cord reel 9 as the shutter curtain ascends. The cord reel 9 has cord guiding sections A, B formed thereon, which are arranged on right and left peripheral surfaces of the winding drum so as to be opposed to each other, and guide to a lead-in channel of the cord 8.</p> |
