| 摘要 |
PURPOSE: A bottom concealed type terraced safety window is provided to completely prevent the inflow of rain by making a window frame stepped. CONSTITUTION: A bottom concealed type terraced safety window comprises a window frame(11) and a window(12). The window frame is formed in the square frame consisting of a frame structure. The window frame has four rails(10). The rail is arranged in the outdoor side and indoor side of the rail. The window is opened and closed by moving along the rail at the window frame. |
