| 摘要 |
A prefabricated door is capable of corresponding to various width and height and secures good structure rigidity to torque and bending. A prefabricated door comprises a core(10), a plurality of frames(100) which are respectively mounted on the top and bottom and left and right edges of the core, and first and second surface materials which is mounted on the frame and respectively corresponds to the front and back surfaces of the core. The core is a sandwich panel wherein lightweight timber or porous material is filled between thin metal plates. A plurality of frames comprises a primary member(110) which is parallel to the girth of the core, primary and secondary extension members(120,130) which are respectively extended toward the core from the base material, and primary and secondary bent members(140,150) which are extended from both ends of the primary member and are bent parallel to each extension member. |
