| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an attachment structure of a nozzle plate for a fuel injection device capable of reducing manufacturing man-hours of the fuel injection device, and capable of reducing the manufacturing cost of the fuel injection device.SOLUTION: A nozzle plate 3 is fixed to an end side of a valve body 5 only by press-fitting a cylindrical fitting part 12 of the nozzle plate 3 to the end side of the valve body 5 and hooking a claw 25 of an arm 10 of the nozzle plate 5 to a locking protrusion 8 of the valve body 5. When a thermal expansion difference or a manufacturing error occurs between the nozzle plate 3 made of a synthetic resin material and the valve body 5 made of metal, a spring action portion 24 of the arm 10 is elastically deformed, and the thermal expansion difference or the manufacturing error between the nozzle plate 3 and the valve body 5 is absorbed, and a tilt surface 27 of the claw 25 of the arm 10 is always pressed to the locking protrusion 8 by elastic force of the spring action portion 24, and a bottom wall 14 of the nozzle plate 3 is always pressed to an end surface 13 of the valve body 5 by tilt surface component force acting on the tilt surface 27.</p> |
