| 摘要 |
PROBLEM TO BE SOLVED: To provide a shutter door capable of preventing its locking mechanism from unlocking the shutter door by restricting the rotation of its pull lever member by an impact force even if an end portion of shutter slats is subjected to an impact force from the outside. SOLUTION: A shutter door comprises a shutter door casing 4 housing a winding portion 3 for rolling up and down shutter slats 2; guide rails 5 guiding the shutter slats 2 at both side portions of the shutter slats 2; a locking mechanism 12 installed to a bottom strap portion 10 of the shutter slats 2; and a pull lever member 13 installed in a rotatable manner around a horizontal shaft which is made to a long size in a longitudinal direction at the rear side of the bottom strap portion 10 for unlocking the locking mechanism 12. Additionally, a rotation restricting mechanism 40 capable of restricting the rotation of the pull lever member 13 is installed to the bottom portion 10 or locking mechanism 12, which is capable of restricting the rotation of the pull lever member 13 due to the impact force by pressing a rotation restricting member 41 to a hand lever member 40 by utilizing an impact force from the outside for the bottom strap portion 10 or the locking mechanism 12. COPYRIGHT: (C)2007,JPO&INPIT
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