Component joining structure

A component joining structure comprising:

• a resin component;
• a metal tip that is provided in the resin component by insert molding such that the meta tip is formed integrally with the resin component and the metal tip is unable to rotate relative to the resin component, the metal tip being a monolithic unitarily-formed structure including a cylindrical shaft-shaped central portion and parallel opposing circular-shaped protruding portions provided at end portions of the central portion in an axial direction of the shaft-shaped central portion, the protruding portions radially-protruding outwards beyond the central portion, a diameter of each of the protruding portions being equal to each other and defining a fixed gap between the protruding portions, and a detent portion being formed around an outer circumferential surface of the central portion;
• wherein the resin component is insert-molded in the fixed gap between the protruding portions around the central portion in non-rotatable engagement with the detent portion, and the protruding portions engage opposing outer faces of the resin component;
• and
• a pair of metal components, each metal component being spot-welded to a respective one of the protruding portions on an outer axial face thereof, and each metal component being disposed parallel to the resin component and joined to the resin component by an adhesive agent that is provided in a gap formed, by the protruding portions, between a respective one of the outer faces of the resin component and an opposing face of the metal component.