Electromagnetic actuator

An electromagnetic actuator comprising:

• a pair of plate springs, each of which is configured to produce elastic force in a predetermined direction in accordance with an amount of deformation;
• a movable member supported by the pair of plate springs to be movable in the predetermined direction;
• a movable element fixed to a portion of the movable member, the portion being located between the pair of plate springs;
• and
• a drive unit which is configured to drive the movable member in the predetermined direction in a non-contact state by means of electromagnetic force to be applied to the movable element between the pair of plate springs in the predetermined direction,
• wherein the movable member is a valve body having an open flow passage which is opened to a predetermined surface of the valve body over a predetermined length in the predetermined direction,
• and wherein the electromagnetic actuator further comprises:
• a first main body that has a plurality of ports and a plurality of connection flow passages connected to the plurality of ports, respectively, the plurality of ports being formed on a facing surface of the first main body that faces the predetermined surface of the valve body, the plurality of ports having openings arranged on the facing surface in the predetermined direction at a spacing shorter than the predetermined length.