Solenoid valve for brake system

Abstract

A solenoid valve for a brake system, which has a simplified configuration and can be easily manufactured with reduced manufacturing costs. The solenoid valve includes valve seat member integrally formed with a seat portion having a first orifice, an opening/closing member slidably installed in the valve seat member, the opening/closing member having an inner passage formed through the opening/closing member, an outer passage formed at an outer surface of the opening/closing member, a second orifice formed at one end of the opening/closing member, the second orifice having a smaller diameter than that of the first orifice, and a first opening/closing portion formed at the other end of the opening/closing member to open or close the first orifice, an opening spring to move the opening/closing member, for opening of the first orifice, a sleeve having a first end coupled to an outer surface of the valve seat member and a flange formed at the first end so as to be fixed to a modulator block, a valve core coupled to a second end of the sleeve, opposite to the first end of the sleeve, an armature slidably mounted in the sleeve, the armature having a second opening/closing portion to open or close the second orifice, and a restoring spring to press the armature toward the second orifice.