| 摘要 |
PURPOSE: A release-preventing flange nut is provided to elastically transfer stress applied on a plane unit of a flange to a nut body and to safely fix the joined base material for long time. CONSTITUTION: A release-preventing flange nut comprises a nut body(100) and a flange(200). A female screw unit(110) is formed in the inner side of the nut body. The flange and the nut body are formed into one body. The flange comprises a plane unit(210), a first taper unit(220), and a second taper unit(230). The plane unit touches to the base material. The first taper unit is extended from an inner diameter of the plane unit, thereby having a predetermined inclined angle toward a direction separated from base material. The second taper unit is comprised between the first taper unit and the female screw unit of the nut body and has the inclined angle larger than the first taper unit.
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