Patent ID: 8222979

Claim:
An electromagnetic relay comprising: a base; an electromagnetic block mounted on a surface of the base, which is formed by winding a coil around an first end portion of an iron core, wherein the first end portion serves as a magnetic pole portion, and a second end portion of the iron core is caulk-fixed to a vertical portion of a yoke having a generally L-shape in cross section; a movable iron piece rotated based on excitation and non-excitation of the electromagnetic block; and a card for driving a contact mechanism portion by making a reciprocating movement through the movable iron piece, wherein a continuous shallow groove having an arc shape in cross section along an outer peripheral surface of the wound coil is formed in an upper surface of a horizontal portion of the yoke along a lengthwise direction of the yoke, wherein the horizontal portion of the yoke is provided between the coil and a bottom surface of the base, and a lower end edge portion of the movable iron piece is rotatably supported at a tip end surface of the horizontal portion of the yoke exposed from the base.