Simulator valve and electronic brake system using the same

A simulator valve comprising:

• a sleeve, an upper part of which is fastened to a magnet core and a lower part of which is fastened to a valve housing provided with an orifice;
• an armature configured to move upward and downward in the sleeve;
• a first elastic member disposed between the magnet core and the armature so as to provide elastic force to the armature;
• a lip seal fastened to an outer surface of the valve housing, and provided with an inclined protrusion;
• a unidirectional flow passage provided with an inclined protrusion, wherein the inclined protrusion is deformed inward when pressure of a pedal simulator is higher than pressure of a master cylinder such that the unidirectional flow passage is opened;
• and
• a bidirectional flow passage configured to open the orifice by movement of the armature after a current is supplied to the magnet core.

A simulator valve comprising:

• a sleeve, an upper part of which is fastened to a magnet core and a lower part of which is fastened to a lip seal provided with an inclined protrusion;
• an armature configured to move upward and downward in the sleeve;
• a first elastic member disposed between the magnet core and the armature so as to provide elastic force to the armature;
• a valve seat located below the armature, and provided with an orifice to be opened or closed by the armature;
• a second elastic member configured to provide the valve seat with elastic force in the direction of the armature;
• and
• a unidirectional flow passage, when pressure of the pedal simulator is higher than pressure of the master cylinder, that is opened or closed by upward or downward movement of the valve seat in a space between the valve seat and the sleeve or is opened or closed by deformation of the inclined protrusion of the lip seal.

A simulator valve comprising:

• a sleeve, an upper part of which is coupled to a magnet core and a lower part of which is coupled to a valve housing;
• an armature configured to move upward and downward in the sleeve;
• a first elastic member disposed between the magnet core and the armature to provide elastic force to the armature;
• a first valve seat disposed below the armature, and provided with an orifice to be opened or closed by the armature;
• a second elastic member configured to provide the first valve seat with elastic force in a direction of the armature;
• and
• a second valve seat fixed to the valve housing,
• wherein the unidirectional flow passage is opened or closed by upward or downward movement of the first valve seat in a space between the first valve seat and the second valve seat.