Rotary open-close type sun umbrella

Abstract

A rotary open-close type sun umbrella includes a standing post, umbrella ribs and umbrella cloths; an unfolding device is arranged at the upper end of the standing post, and the unfolding device is rotatably connected with the standing post; a plurality of umbrella ribs is arranged on the unfolding device, and the umbrella ribs are connected to umbrella cloths; each umbrella cloth is connected with two adjacent umbrella ribs, thus enabling the plurality of umbrella ribs and umbrella cloths to be sequentially connected to form an umbrella surface; the standing post is provided with a driving device, and the driving device is in transmission connection with the unfolding device, thereby allowing the umbrella surface to be unfolded or folded; the rotating arms are rotatably arranged on a mandrel; the mandrel propels one of the rotating arms and the corresponding umbrella rib to rotate.

Dependencies are inferred from the claim text.