| 摘要 |
PROBLEM TO BE SOLVED: To provide an overhead door that may be opened/closed by moving a connected body of panels along a guide rail that has undergone interlayer deformation.SOLUTION: A connected body of panels 11 of an overhead door 10 has a plurality of panels 5 and an intermediate hinge 15a. An intermediate hinge 15a includes: a hinge shaft 46; a first shaft bearing 47 that rotatably supports the hinge shaft at both ends; a first shaft bearing member 48 disposed below the adjacent panels 5; a second shaft bearing 49 that rotatably supports a part of the shaft 46 between both ends; a second shaft bearing member 50 disposed above the adjacent panels 5; spaces 51, 52 formed above the shaft 46 between the shaft bearings 47, 49; and compression springs 53, 54 disposed on the shaft 46 in spaces 51, 52. When a pair of guide rails 2, 2 has undergone interlayer deformation, the adjacent panels 5 may be moved independently along a shaft direction of the shaft 46, resisting energizing force of the compression springs 53, 54.SELECTED DRAWING: Figure 7 |
