| 摘要 |
PURPOSE: A corner coupler for a knockdown window frame is provided to improve the durability of a window frame by maintaining a firm fixed state and to improve assembling efficiency by simplifying a combined state of each aggregate and guiding members. CONSTITUTION: An auxiliary fixing device(22) is formed in a corner portion of an upper horizontal insertion(2). Plural combination guiding devices are formed inside the horizontal insertion(2). A windproof instrument(24) is integrally formed in the horizontal insertion(2). Combination guiding holes(P) are formed in the combination guiding devices so that the durability and assembling efficiency of a window frame are improved.
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