Opening and closing mechanism of sunshade or awning

The opening and closing mechanism comprises a framework, the framework comprises an upper disc body and a lower disc body, a plurality of long supporting ribs used for supporting sunshade cloth are arranged on the upper disc body, a plurality of short supporting ribs are arranged on the lower disc body, and one short supporting rib is correspondingly connected with one long supporting rib. The device is characterized in that the upper disc body is connected with the lower disc body through a gas spring. The sunshade or awning has the advantages that the structure is simple, the operation is convenient, and the sunshade part of the sunshade or awning is easily unfolded and folded by utilizing the air spring. 本发明公开了一种遮阳伞或蓬的开合机构，包括骨架，骨架包括上盘体和下盘体，上盘体上设置有多根用于支撑遮阳布的长撑骨，下盘体上设置有多根短撑骨，一根短撑骨对应连接一根长撑骨，特点是上盘体与下盘体之间通过一气弹簧相连接。优点是结构简单，操作方便，利用气弹簧实现该遮阳伞或蓬的遮阳部分的轻松打开和收合。