초록 ▼

An electromagnetic valve has a plunger as an armature of an electromagnetic actuator and a ball as a movable valve member. The plunger and the ball are separated to permit the ball to move freely in response to a pressure difference between an inlet and an outlet when the coil attracts the plunger.

An electromagnetic valve has a plunger as an armature of an electromagnetic actuator and a ball as a movable valve member. The plunger and the ball are separated to permit the ball to move freely in response to a pressure difference between an inlet and an outlet when the coil attracts the plunger. If the plunger undesirably moves by a pressure difference between both ends of the plunger, the ball can keep a closing condition during a suction pressure that is higher than a pressure in the inlet. Therefore, an undesired communication between a master reservoir and a pump is avoided.

대표청구항 ▼

1. An electromagnetic valve comprising:a valve having a seat member for providing a passage thereon and a movable member for opening and closing said passage; an actuator having a coil for generating a magnetic force and a plunger for actuating said movable member in a closing direction in response

1. An electromagnetic valve comprising:a valve having a seat member for providing a passage thereon and a movable member for opening and closing said passage; an actuator having a coil for generating a magnetic force and a plunger for actuating said movable member in a closing direction in response to said magnetic force; a means for applying a force to said plunger in a direction to close said valve, wherein said plunger and said movable member are made as independent members, and wherein said valve acts as an one-way valve for keeping a closing condition in response to a pressure in a side of said plunger which is higher than a pressure in a side of said seat member even when said plunger and said movable member are separated.