| 摘要 |
PURPOSE: A doorframe constructing method is provided to easily replace only an outer doorframe, to mass-produce the doorframe and to assemble the doorframe on the spot. CONSTITUTION: An inner aluminum doorframe(20) is fixed in auxiliary wood(12) with screws. A variable inner doorframe(30) is fixed to be suited for an inner width. A variable outer doorframe(32) is stuck to the variable inner doorframe. A groove of an outer doorframe(40) is inserted in a flange of the inner aluminum doorframe. A side portion of the outer doorframe is inserted inside a pillar of the inner aluminum doorframe. Thereby, a twisting of the doorframe is prevented.
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