Door for vehicle

A vehicle door comprising:

• a door panel formed by bonding a door outer panel and a door inner panel;
• a door module in which a module body portion and a window frame portion are integrally injection-molded and coupled to an inner side of the door inner panel;
• and
• a door trim coupled to an inner side of the door module,
• wherein the window frame portion comprises:
• a window glass frame part that supports a window glass;
• a quarter glass upper frame part that supports a quarter glass;
• a quarter glass front frame part that supports a front end of the quarter glass;
• an inside belt frame part where an inside belt is assembled;
• and
• a pillar frame part that guides lifting and lowering of the window glass,
• wherein the window frame portion is injection-molded while a reinforcement bracket is integrally inserted therein,
• the window glass frame part, the quarter glass upper frame part, the quarter glass front frame part, and the pillar frame part are injection-molded so that the reinforcement bracket is fixed by a plurality of rib structures while a plastic resin is filled through a plurality of through-holes formed in the reinforcement bracket,
• the plastic resin is insert-injection molded in the inside belt frame part such that an upper end and a lower end of the reinforcement bracket are partially surrounded at the inside of the module body portion,
• the plastic resin is injected through at least one of the penetration holes formed in the reinforcement bracket at a location corresponding to the inside belt frame part forms a fixed end in the penetration hole such that the module body portion and the reinforcement bracket are coupled, and
• the plastic resin is injection-molded such that an inner side of the reinforcement bracket located in the inside belt frame part is exposed.