| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent unlawful intrusion by forming a projecting part or a recessed part to be engaged at door deformed time on a sash door side surface and a part corresponding to the sash door side surface of a door frame. SOLUTION: A projecting piece 24 is formed in the outdoor direction on a door receiving piece 23 by arranging the door receiving piece 23 orthogonal to a sleeve piece 22 extending to the indoor side from a main body 21 in a door tip side vertical frame 2b of a door frame having a sash door 1 hinged by a hinge. Next, a step part 11a is formed in a door end side wall part of a recessed part 11 by arranging the recessed part 11 fitted with the projecting piece 24 at door closing time over the total length in the vertical direction in a part corresponding to the projecting piece 24 of a door end frame member of the door 1. When an intruder wrenches it by inserting the bar tip between the vertical frame 2b and a door end of the door 1 by bending the card edge 12 by a bar, the door end moves in the hinging part direction since the door 1 is deformed, so that a dead bolt 41 of a lock 4 also moves in the direction for slipping out of a fitting hole of a strike 5, but the step part 11a checks a movement by engaging with the projecting piece 24 at moving time. Therefore, crime preventive performance can be improved by checking an attack on the sash door.</p> |
