Patent ID: 7168681

Claim:
A fuel injection valve comprising: a valve member that opens and closes a nozzle hole; a movable core that axially reciprocates with the valve member; a fixed core that is arranged on a side opposite to the nozzle hole with respect to the movable core, the fixed core opposing to the movable core; a coil that generates magnetic force, which attracts the movable core toward the fixed core when the coil is energized, wherein the coil includes a winding, and the winding of the coil has an axial section, which is in a polygonal shape; and a spool that includes a cylindrical portion, a first hooking portion, and a second hooking portion, wherein the winding is wound around the cylindrical portion of the spool, the first hooking portion is arranged on a first end of the cylindrical portion to hook a first end of the coil, the second hooking portion is arranged on a second end of the cylindrical portion to hook a second end of the coil, one of the first hooking portion and the second hooking portion is arranged on a side, from which the winding of the coil is wound, the one of the first hooking portion and the second hooking portion defines a guiding groove that guides the winding to an outer periphery of the cylindrical portion along a substantially circumferential direction of the cylindrical portion, and the guiding groove is radially inclined in said substantially circumferential direction toward the cylindrical portion.