| 摘要 |
PURPOSE: A fastener of a plastic structure is provided to easily combine both objects in mutually assembling plastic structures, secure fixing safety by preventing the separation of objects after being assembled and cut down manufacturing cost due to the simplified structure. CONSTITUTION: A fastener(F) of a plastic structure is composed of an expansion hanging projection(10), a unidirectional fitting unit(20), and a wedge(30). The expansion hanging projection formed at one of a fixing structure and a combining structure(2) to be integrally combined with the fixing structure includes an expanded end unit(12) for having the width of a section that is expanded more than a body unit, and cut grooves(14,23) longitudinally formed in the center of the expanded end unit at a predetermined depth. The unidirectional fitting unit formed at one of the fixing and combining structures at which the expansion hanging projection is not formed has an inclined perforated hole(22) in which the expansion hanging projection is inserted and hung, and a plurality of cut grooves formed along the inclined direction to make the expanded end unit of the expansion hanging projection be contracted and hung. The wedge is fitted in the cut groove of the expansion hanging projection to prevent the expansion hanging projection from being separated after combining the expansion hanging projection with the unidirectional fitting unit.
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