Reinforcement structure of roller bracket in overhead door

摘要

PROBLEM TO BE SOLVED: To improve wind resistance strength of an overhead door by reinforcing a roller bracket. In an overhead door, a roller shaft (40) of a guide roller (4) has a pair of brackets (30, 31, 32, 33) of two sets protruding in opposite directions from both widthwise ends of an indoor side surface (10) of a panel (1). Is received in a pipe 34 which is inserted through the pipe 34, and the pipe 34 is provided with a reinforcing means for restricting the inward fall of at least one bracket 30, 33 of the pair of brackets 30, 31, 32, 33. There is. The reinforcing means is the outer pipe 9 which is located between the pair of brackets 30 and 31 and between the brackets 32 and 33 and which is covered with the pipe 34. [Selection diagram] Fig. 3