THE STRUCTURE OF UMBRELLA RIBS

A structure of umbrella ribs is provided to prevent the ribs from being broken or deformed by a strong rain and wind, etc. so as to be stably used, by preventing the backlash of the ribs, and to achieve the light weight and the corrosion prevention of the umbrella by injection-molding the ribs with aid of a synthetic resin. The antenna-type structure of umbrella ribs is configured in such a manner that three rib tube bodies(1,2,3) have a large, medium and small diameter respectively and are assembled with each other. The tube body(1) of a large diameter includes: a hook(11); an insertion groove(12) and guiding groove(13); a fixing power rib(16) for an auxiliary rib; an auxiliary rib(15); and an umbrella cloth connection bar(19), having a fixing loop(18). The tube body(2) of a medium diameter includes: a cut groove(22), into which the tube body(3) of a small diameter is inserted from the upper and stably slid without being rotated; a projected guide(23); and a stop piece (21). The tube body(3) of a small diameter includes: a guiding piece(31); and a cap(32).