| 摘要 |
The invention relates to a window covering structure, comprising top covering and side coverings having drainage grooves, the drainage grooves of the top covering and the side covering are joined together in a waterproof manner. Thus the drainage grooves of the top and side coverings form an integral structure, the water inside of the top covering drainage groove flows into the side covering drainage groove. The drainage is convenient. There is no need to do the drainage process to the top covering individually, its structure is simple and the connection is reliable. One structure is that the drainage groove of the top covering and drainage groove of the side covering are joined in a sealing manner at their end surfaces having the sealing glue placed at the end surfaces, the joint angel is 30°, 45°or 60°. Another structure is that the top covering drainage groove overlaps the side covering drainage groove, the connecting portion of the top covering drainage groove covers above the connecting portion of the side covering drainage groove. Its installation is simple and the appearance is nice.
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