Attachment structure of fuel injection device nozzle plate

An attachment structure of a fuel injection device nozzle plate having a nozzle hole for atomizing and injecting fuel flowing from a fuel injection port of a fuel injection device, wherein:

• a metal valve body having the fuel injection port on a front end side includes a cylindrical nozzle plate accommodation part accommodating the fuel injection device nozzle plate of synthetic resin and a nozzle plate supporting part supporting the fuel injection device nozzle plate accommodated in the nozzle plate accommodation part using the front end side on which the fuel injection port is formed,
• the nozzle plate accommodation part has, on a part of an inner peripheral surface close to an opening end, a removal prevention projection preventing the fuel injection device nozzle plate accommodated in the nozzle plate accommodation part from being removed so that the removal prevention projection is hooked on the fuel injection device nozzle plate,
• the fuel injection device nozzle plate includes a nozzle hole formation part in which the nozzle hole is formed and a plurality of spring action parts formed radially outward of the nozzle hole formation part, and
• each of the spring action parts is elastically deformed in a diameter reducing direction by the removal prevention projection when the fuel injection nozzle plate is accommodated in the nozzle plate accommodation part to enable the fuel injection nozzle plate to pass radially inward of the removal prevention projection, elastically restored in a diameter increasing direction when the fuel injection nozzle plate is accommodated in the nozzle plate accommodation part and makes contact with an inner peripheral surface of the nozzle plate accommodation part, aligns a center of the fuel injection device nozzle plate with a central axis of the valve body, is bent by the removal prevention projection, and pushes the nozzle hole formation part against the nozzle plate supporting part.