| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a bang in caused by letting a hoisting bar or a roller installed in both edges of the hoisting bar strike against a guide rail when bunting swings and the hoisting bar moves from left to right and back and forth. SOLUTION: In a drop curtain hoisting device where both edges of several hoisting bars 5 for linking the bunting that is hoisted with a wire rope 4 are set in an opening part 3 or channel-typed guide rail 1 with two cross lips fixing the opening part 3 facing an exterior wall 2 of a building, and a roller 6 rolling inside the guide rail 1 is installed in both edges of the hoisting bars 5 with rotary motion, an elastic body 9 pressing all the time roller 6 in the direction of the lips of the guide rail 1 is inserted between a stopper 8 or the edge of the hoisting bar 5 and the roller 6.
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