An insulator of a coil winding component constituting part of a rotary electric machine is resin molded integrally with a divided iron core. A first accommodating groove in which a coil terminal wire can be arranged is formed on an outer end surface of a wiring member of the insulator. A plurality of recesses are formed in a circumferential direction of a stator core on a groove bottom surface of the first accommodating groove. Further, a rib, which supports the coil terminal wire that is arranged in the first accommodating groove, is disposed between the mutually adjacent recesses.