All the sticks of the support can be designed as stretchable sheath-shaped tubes like that of Folding Umbrella, for easily adjusting the width and height of the support.

• 支架的所有杆件均可设置成可以伸缩的结构，该伸缩结构可以采用类似折叠伞的伸缩套杆，从而能够很方便地调节支架整体的宽度和高度。