| 摘要 |
A front door frame stiffness improvement structure is provided to secure the rigidity of the front door by differing coupling method of the panel and the door frame in order to secure the frame rigidity of the front door. A front door frame stiffness improvement structure comprises a first supporting plate(110) and a second supporting plate(120) which is prepared with the horizontal direction in order to face; the door frame(100) consisting of the extension plate(130) combined in the end part of the second supporting plate and the first supporting plate; a first support panel(200) which is curve-cut in order to shelter the first supporting plate top; and a second support panel which is curve-cut in order to surround the second low part of supporting plate.
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