Patent ID: 9046186
Filing Date: 2015-06-02
Classification: F16K

Abstract:
1. An electromagnetic valve comprising: a housing; a rod disposed to be slidable in an axial direction of the rod in the housing; an armature having a rod hole through which the rod extends to be fixed to the armature, the armature moving toward one side in the axial direction by a magnetic attraction force upon energization of a solenoid coil; a spring engaged with the rod, the spring urging the rod toward an other side in the axial direction, the other side being opposite from the one side; and a stopper that limits the movement of the armature by contacting the rod, wherein the rod includes a fixed portion extending through the rod hole to be fixed to the armature, and a flange portion located on the one side in the axial direction with reference to the fixed portion, the flange portion is larger than the fixed portion and the spring in a radial direction of the rod, the flange portion has a radially outer wall that is immediately adjacent to the armature in the radial direction to be surrounded by the armature, the flange portion is engaged with the spring on the one side in the axial direction with reference to the flange portion, the armature includes a contact portion provided adjacent to an opening of the rod hole that is open toward the one side in the axial direction, the contact portion extends in the radial direction, the flange portion contacts the contact portion on the one side in the axial direction with reference to the contact portion, the rod includes a thin portion located on the one side in the axial direction with reference to the flange portion, and the thin portion is smaller than the flange portion in the radial direction, the thin portion having a solid circumferential body projecting into the spring to meet the stopper so as to limit the movement of the armature by contacting the rod.