Economic double-story umbrella as conveniently anchored

摘要

A double-story umbrella includes an upper umbrella formed by an upper umbrella cloth; a lower umbrella having a shaft and a rib assembly pivotally secured to the shaft for securing a lower umbrella cloth on the rib assembly; a plurality of detachable restorable buckling devices each coupling the upper umbrella cloth with the lower umbrella cloth; and a supporting device adjustably detachably secured on a lower portion of the shaft and operatively anchored on or under a ground for stably erecting the shaft and the double-story umbrella.