Universal connecting structure

A universal connecting structure for connecting a windshield wiper blade to a windshield wiper arm comprising:

• a main body comprising an end cover and a bar-shaped block extended from the end cover, wherein the end cover comprises a pressing plate disposed on one end thereof close to the bar-shaped block and pressing the windshield wiper arm, the bar-shaped block comprises a pivotal groove connected with the windshield wiper blade and a latching block disposed at a location away from the end cover and latched with the windshield wiper arm, a pivotal connecting hole is defined on the bar-shaped block close to the end cover for the windshield wiper arm to pass, an engaging hole is defined on one end of the bar-shaped block away from the end cover, a positioning hook is disposed at a top end of the engaging hole of the bar-shaped block, and a guiding strip and a buckling slot are disposed on two sides of the bar-shaped block;
• a supplemental unit coupled with the main body in a replaceable manner, wherein the main body is connected to the windshield wiper arm via the supplemental unit;
• wherein the supplemental unit comprises a top plate and a plurality of side plates extended from the top plate, the top plate comprises an accommodation slot, and the latching block protrudes from the accommodation slot;
• wherein the top plate further comprises a notch, the notch comprises a positioning slot, the positioning slot is arranged corresponding to the positioning hook to be mutually engaged and positioned with each other, a convex protrusion is extended from an inner side of each of the side plates, each of the convex protrusions is correspondingly buckled and fastened with each of the buckling slots, the bar-shaped block comprises a plurality of latching hooks, each of the side plates comprises a latching plate, and a plurality of the latching plates is correspondingly latched and fastened with the latching hooks.