| 摘要 |
PURPOSE: A multifunctional auxiliary window is provided to fulfill the functions of crime prevention and protection against insects, and to be recyclable by installing and dismantling simply at need. CONSTITUTION: A multifunctional auxiliary window comprises a rectangular main frame(20) provided with many main hollow security gratings(22) arranged in the direction of opening and closing, an auxiliary frame(30) provided with many auxiliary security gratings(32) arranged as same as the main hollow security gratings of the main frame and received into the main security gratings respectively, wherein the auxiliary frame is elastic against the main frame and the main security gratings are fixed to right and left frames(21a,21b) of the main frame and the auxiliary security gratings are fixed to the auxiliary frame.
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