| 摘要 |
PURPOSE: A window structure with high airtight and insulating performance is provided to prevent heat loss by completely cutting off air flowing through a window frame. CONSTITUTION: A window structure with high airtight and insulating performance comprises a window sill frame. The window sill frame is divided into external and internal frames. The external and internal frames are coupled to each other using a heat insulator. Contact units(18,28,58,68) moved when a window is closed are formed in the window sill frame and a window frame. When the contact units are moved, a dual airtight structure with an air insulating layer is formed between the window sill frame and the window frame. |
