Positioning structure for opening of an umbrella

Abstract

This invention relates to a positioning structure for opening of an umbrella, which includes a runner movably provided around a shaft of an umbrella. The runner has a positioning hole and an extended slice placed over an opening groove. An upper jointer mounted on the top end of the shaft connects with an elastic beam, which is downward extended with a slight inclined angle and is provided with a protrusion at middle portion. And as the protrusion is engaged with the positioning hole, the elastic engagement is obtained, while the runner can be stopped in secure for keeping the umbrella in stable opening state.

What is claimed is:  
     
         1 . A positioning structure for opening of an umbrella including a runner movably provided around a shaft of an umbrella, wherein the runner has a positioning hole and an extended slice placed over an opening groove; an upper jointer mounted on the top end of the shaft connecting with an elastic beam, which is downward extended with a slight inclined angle and is provided with a protrusion at middle portion, and as the protrusion being engaged with the positioning hole, the elastic engagement being obtained, while the runner can be stopped in secure for keeping the umbrella in stable opening state.  
     
     
         2 . The positioning structure for opening of an umbrella as claimed in  claim 1 , wherein the protrusion being provided in the runner and the positioning hole being provided on the elastic beam.  
     
     
         3 . The positioning structure for opening of an umbrella as claimed in  claim 1 , wherein the extended slice on the runner can be omitted.