Automatic collapsible umbrella

Abstract

The invention relates to an automatic collapsible umbrella, which includes a spring-provided between two runners, another spring between a slider and upper joint of the shaft, and a rope connecting its outer end with the upper joint. By pulling the shaft of the umbrella first, the springs can provide recovery force for opening or closing the umbrella automatically and efficiently.

1 . An automatic collapsible umbrella including a shaft having several tubes, a runner assembly having an upper runner, a lower runner, and a middle spring, and a frame, wherein a slider is mounted on top portion of the shaft and a spring is between the slide and an upper joint of the shaft, and by use of the recovery force of the springs, the umbrella can be opened or closed automatically.  
   
   
       2 . An automatic collapsible umbrella as claimed in  claim 1 , wherein a rope has its outer end pass by a roll and the slider to connect with the upper joint of the shaft.