Collapsible frame structure of a sunshade or parasol

摘要

An improved collapsible frame structure for use on an outdoor sunshade or parasol which is equipped with a minor extension arm coupled to a main runner of a main mast and a main extension arm in pivotal connection to a top retainer of the main mast at one end and to a lower end of a secondary stretching strut at the other end. The main extension arm and the minor extension arm are mutually coupled to each other at their middle points. The secondary stretching strut is further pivotally coupled to an extended pivot end of either the minor runner or the top notch of the sunshade or parasol so as to permit the sunshade to be extended in an easier and smoother manner when the main runner is pushed up or pulled down by a user.