Rib structure of a four-folded umbrella

摘要

The present invention relates to a rib structure of a four-folded umbrella, which includes a first rib, a second rib, a third rib, and a tail rib and is connected with a shaft. The characteristic is to provide a connector at the outer end of the third rib and a branch rib, and the connector can bond the third rib and the tail rib that provides the umbrella rib structure to be a perfect arched outlook as it is opened.