Engaging structure for runner of an umbrella

Abstract

The invention relates to an engaging structure for runner of an umbrella, which has the runner with several balls and an outer sleeve. The shaft is provided with relating engaging structure for positioning the balls of the runner as the umbrella is opened while the sleeve compresses the balls to maintain the umbrella having a firm state of opening.

1 . An engaging structure for runner of an umbrella including the runner being provided with several side apertures for receiving a relating ball, a sleeve provided around the runner, which includes upper opening and an inner middle edge having smaller diameter relating to the opening, and the sleeve having an inner low projective ring, which can engage with a positioning ring on the runner thereunder, and the runner with the sleeve being provided around shaft having an annular convex portion for engaging the balls received in apertures of the runner while being compressed by middle edge of the sleeve to maintain the umbrella being opened stably.  
   
   
       2 . An engaging structure for runner of an umbrella as claimed in  claim 1 , wherein the shaft is provided with several grooves relating to the balls for engagement.  
   
   
       3 . An engaging structure for runner of an umbrella as claimed in  claim 1 , wherein the shaft is provided with two tubes in interval with an annular convex portion for engaging with the balls.