| 摘要 |
The present invention relates to a heat insulating sash structure with an improved heat transmission coefficient, capable of lowering a heat transmission coefficient using a thermal breaking member separating outer and inner frames, having an air layer therein, or changing an air flow, thus achieving a first class (equal to or less than 1.0 W/m^2K) of the heat transmission coefficient. The heat insulating sash structure in which one glass (G1) is installed between a main frame (10) and a cap frame (20) and another glass (G2) is installed at a window frame (40) and a window frame (40) is opened and closed with respect to a connection frame (30) stacked on the main frame (10), comprises a first thermal breaking member (50) having a binding portion (13) formed to protrude to one side of the main frame (10) and inserted to a rear end side and a plurality of first rib gaskets (55) protruding to a side portion; a cap insulator (60) in surface contact with a front end side of the first thermal breaking member (50) and inserted and coupled to the cap frame (20); a second thermal breaking member (70) installed between the main frame (10) and the cap insulator (60), facing one side of the first thermal breaking member (50), and having a plurality of second rib gaskets (77) alternately disposed with the plurality of fist rib gaskets (55); a coupling unit (80) coupling the cap frame (20) to the main frame (10); and a third thermal breaking member installed between the window frame (40) and the connection frame (30) to cut off heat exchange between the window frame (40) and the connection frame (30). |
