LOCKING STRUCTURE OF SHUTTER CURTAIN

摘要

PROBLEM TO BE SOLVED: To install a hook piece 4 in a slat end part 2f for locking a shutter curtain 1 effectively function for a guide rail 3 at strong wind time such as a typhoon. SOLUTION: To a projecting strip 18 arranged on an inner wall 15a of an outdoor side side wall 15 of the guide rail 3, an engaging recessed groove 9 arranged in an intermediate part 6 of the hook piece 4 for engaging with the projecting strip 18 is formed in a one-sided trapezoidal shape with a base part 7 side side surface as an expansively opening slope face 12.