Electromagnetic device, and electromagnetic relay using same

An electromagnetic device comprising:

• an excitation coil;
• a stator surrounded by the excitation coil, the stator having a first end;
• a movable element surrounded by the excitation coil and configured to, when current is flown in the excitation coil, be attracted to the stator by magnetic flux generated at the excitation coil to move in a first direction from a first position to a second position, wherein the movable element is in contact with the first end of the stator when the movable element moves to the second position;
• a yoke having a first end and a second end, and forming a part of a magnetic path for the magnetic flux generated at the excitation coil, wherein the first end of the yoke is magnetically combined with the stator, the second end of the yoke is positioned on a side of the first position of the movable element, and the excitation coil is disposed between the first end of the yoke and the second end of the yoke;
• and
• a yoke extension connected to the second end of the yoke and extending from the second end of the yoke to the first end of the stator, the yoke extension being magnetically combined with the yoke, the stator, and the movable element,
• and
• wherein the yoke extension surrounds entirety of the movable element positioned between the first position and the second position and surrounds the first end of the stator.