| 摘要 |
PURPOSE: A door frame structure is provided to reduce door assembly manufacturing costs, while preventing the deformation of the door frame. CONSTITUTION: A door frame structure comprises a door frame(60) having a rectangular shape, which is arranged in a door; and first and second reinforcement brackets(65,65') arranged at the edges of the top and bottom of an end of the door frame corresponding to the rotation center of the door in such a manner that the first and second reinforcement brackets are placed over the side edge and top and bottom edges of the door frame so as to reinforce the edges of the door frame. The door frame has a channel(63) formed along the inside of the edge of the door frame, and the first and second reinforcement brackets are coupled to the top and bottom edges of an end of the door frame, respectively.
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