| 摘要 |
An umbrella includes a shank, a plurality of main ribs connected pivotally to the shank, a plurality of auxiliary ribs connected pivotally to the shank, a plurality of elastic members connected to the main ribs and the auxiliary ribs, a slide unit connected slidably to the shank, a plurality of spreaders connected pivotally to the main ribs and the slide unit, a first canopy connected to the main ribs and having a top edge cooperating with the main ribs to define a plurality of openings, and a second canopy connected to the auxiliary ribs and covering removably the openings. |
