| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic lock of a wing door for a wing door-interlocking shutter, which dispenses with a spring and a latch pressed by the spring, employs a hook plate in place of the latch, and automatically locks the wing door at an appropriate location by using the self weight of the hook plate, simultaneously with closure of the wing door. SOLUTION: In the wing door-interlocking shutter, the wing door is provided for the shutter for construction, provided with a guide rail for guiding the shutter and a side door formed therein, axially supported and pivoted by a hinge in a horizontally rotatable manner, and has an energizing force applied thereto so as to be always closed. The automatic lock device of the wing door is arranged in a door stop 5 for stopping the wing door at a predetermined location after rotation thereof, and has the hook plate 7 and a pocket. The hook plate 7 is rotatable by using the self weight in an unlocking direction or a locking direction through predetermined degrees about a pin 6 arranged inside the door stop, and has a claw 7a formed at the tip thereof, that has a lubricating surface engageable with an upper surface of the wing door to enter the door stop or recede from the same. The pocket 9 is formed in the upper surface of the wing door 2 opposed to the claw, for engaging with the claw. COPYRIGHT: (C)2007,JPO&INPIT
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