NUT COMBINING APPARATUS

摘要

PURPOSE: A nut coupling device is provided to widen an external diameter of a nut by coupling the nut coupling device to the outside of the nut. CONSTITUTION: A nut coupling device comprises a body unit(100), a nut groove(300), and a fixing protrusion unit(200). The body unit is formed as a cylindrical shape and comprises a concave-convex pattern in a side surface. The nut groove is formed at the center of the body unit as a concave shape. The fixing protrusion unit is formed at the side surface of the body unit and forms a button structure to occupy the nut.