Rib modified umbrella

The utility model provides a rib modified umbrella, includes umbrella stick, last nest, well nest, descends nest, several long bone, several short bone, several connection bone and umbrella face, upward nest, well nest and lower nest from top to bottom overlap and locate on the umbrella stick, it is equipped with the locating part of cover on the umbrella stick to go up between nest and the well nest, be equipped with the spring of cover on the umbrella stick between well nest and the lower nest, umbrella surface connection is on several long bones, the long bone includes the bone and has elastic sending down the fishbone, going up the one end of bone and being connected with last nest, its other end is connected with the one end of sending down the fishbone, the other end and the umbrella surface connection of sending down the fishbone, the one end and the well nest of short bone are connected, and its other end is connected with last bone, connecting the one end of bone and being connected with lower nest,