| 摘要 |
PROBLEM TO BE SOLVED: To prevent a case plate from falling off by preventing an engaged state on an upper side of the case plate from being detached.SOLUTION: Multiple curved case plates 9 are consecutively installed in an opening width direction. In a state where end parts in a width direction of neighboring curved case plates 9 are overlaid, an upper engaging piece 93 is engaged with an engaged piece 53 of an upper case stop material 5, and a lower fitting piece 94 is fit to a lower case stop material 6. Detachment preventing means 7, 8, 19 are formed on the upper case stop material 5 corresponding to at least the curved case plate 9 located outside. An engaged part is formed on the detachment preventing means 7, 8, 19. When the upper engaging piece 93 of the curved case plate 9 is detached from the engaged piece 53, the upper engaging piece 93 engages to the engaged part.SELECTED DRAWING: Figure 9 |
