Patent ID: 6889919

Claim:
A fuel injection device comprising: a tubular member that has a first magnetic segment, a magnetically resistive segment and a second magnetic segment, which are arranged in this order from a downstream end of the tubular member; a valve body that is arranged adjacent to the first magnetic segment of the tubular member and includes a fuel injection hole and a valve seat, wherein the fuel injection hole is located at a downstream end of the valve body, and the valve seat is located upstream of the fuel injection hole; a valve member that is reciprocably received in the tubular member and has an abutting portion, which is seatable against the valve seat, wherein: the abutting portion closes the fuel injection hole when the abutting portion is seated against the valve seat; and the abutting portion opens the fuel injection hole when the abutting portion is lifted away from the valve seat; a movable core that is arranged on an upstream side of the valve member and reciprocates together with the valve member; a stationary core that is arranged in the tubular member on an upstream side of the movable core in opposed relationship to the movable core; and a coil that is arranged radially outward of the tubular member and generates a magnetic attractive force for attracting the movable core toward the stationary core upon energization of the coil, wherein the stationary core has a press fitting portion and is secured to an inner peripheral wall of the tubular member through the press fitting portion by press fitting, so that an outer peripheral wall of the press fitting portion of the stationary core is engaged with the inner peripheral wall of the tubular member, and a radial space is formed upstream of the press fitting portion of the stationary core between the stationary core and the tubular member.