| 摘要 |
PROBLEM TO BE SOLVED: To surely and easily mount a movable piece to a door body. SOLUTION: A movable piece 2 having a permanent magnet 21 is mounted to an upper part of a door body 6. A fixed piece 1 that constitutes a part of a door frame 5 together with a vertical frame 52 and a threshold 53 is provided, so as to face the movable piece 2, at a threshold 51 that holds the upper part of the door body 6. The movable piece 2 is composed of the permanent magnet 21 and a movable piece yoke 23. The magnet 21 is attracted to an upper surface of the yoke 23. Since the magnet 21 is attracted to the yoke 23 fixed to the upper part of the door body 6 by screw, the yoke 23 and the magnet 21 can be surely and easily mounted to the door body 6 without performing any special work (grooving) to the door body 6. |
