The subject innovation is a wing nut for installing the formwork panel, the first inclined surfaces binary narrow tapering at the top of the fitting holes of the plate is formed, the additional contact to the second inclined surface in close contact with the first inclined surfaces formed tightening nut and the fastening part as may further be formed between the first the clamping force as well as adhesion to, fastening the mold fastening bolt of the elongate connecting the formwork panel, because additional plate and the fastening can be firmly adhered by the first inclined plane and the second inclined plane largely can be improved and allows a rigid installation of the formwork, and coupling portion and the plate is snap lock ring and decomposed by the washer, and because it can be assembled of any one component constituting the wing nut during use, even if broken or worn snap lock ring replacing the parts separated by breakage from the fastening portion, and then, it is possible to use highly effective recombination in the economic point of view One as well, and to provide an improved wing nut that can greatly reduce the rising costs caused by rising prices for raw materials by reusing after use.
To this end, the subject innovation is the formwork panel 101 fitted to and in close contact with the outer surface and the fitting holes 11, the through-hole plate (12) therein, the fitting holes 11 of the plate 12, the plate 12 of the It protrudes inwardly to the outside of the die fastening bolt fastening portions (13) 102 a coupling fitted to the inside is formed with an engagement groove depressed to end the outer surface connecting the formwork panel 101, the fastening part 13 extending to be fitted to the outside of the tightening nut 14, a fastening part 13 that protrudes to the inside of the plate 12 to return the engaging part 13 by tightening the die fastening bolt 102, a washer (15 ) and, in the wing nut consisting of a snap lock ring 16 which is a binder for binding groove formed on the end outer surface of the retaining portion 13, the fitting holes 11, the plate (12, upper end) of the plate (12) the first inclined surface 20 is gradually narrowed binary tapering into the inside of this is further formed, the plate Fitted in the fitting holes 11 of the 12, the fastening portion 13 and the tightening nut (14) between, the tight contact portions are equally tapered second inclined surface 31 and the first inclined surface 20 is formed 30 is further formed is characterized in that formed.