A coil insertion guide device includes a positioning jig that positions a stator core; and a guide member that is provided in the positioning jig so as to be able to contact an end face of the stator core in an axial direction. A coil inserted into the slots along the radial direction of the stator core is guided by the guide members. The guide member includes a guide groove. The guide groove includes, on a side close to the end face of the stator core, a cuff support groove that houses and supports a cuff of one of the insulating members that protrudes from the end face of the stator core, and on a side far from the end face, a coil guide groove that protrudes toward an inside of the slot more than the cuff support groove and contacts the coil to guide movement of the coil.

A coil insertion guide device includes a positioning jig that positions a stator core; and a guide member that is provided in the positioning jig so as to be able to contact an end face of the stator core in an axial direction. A coil inserted into the slots along the radial direction of the stator core is guided by the guide members. The guide member includes a guide groove. The guide groove includes, on a side close to the end face of the stator core, a cuff support groove that houses and supports a cuff of one of the insulating members that protrudes from the end face of the stator core, and on a side far from the end face, a coil guide groove that protrudes toward an inside of the slot more than the cuff support groove and contacts the coil to guide movement of the coil.

Insulators are formed of a resin material using injection molding and provided at an end portion in an axial direction of a cylindrical stator included in a motor. Each of the insulators includes a wall portion that is formed in a cylindrical shape; a plurality of winding drum portions that consecutively extend from the wall portion so as to be along one end surface in an axial direction of the wall portion from an inner peripheral surface of the wall portion toward an inner side in a radial direction of the wall portion; and a plurality of opening portions that are formed between the respective winding drum portions, which are adjacent in the circumferential direction of the wall portion. A gate mark, which indicates an injection location of the resin material, is formed on the one end surface in the axial direction of the wall portion.