Patent ID: 7439834

Claim:
In an electromagnetic relay which has the electromagnetic drive section, which consists of coil, iron core, yoke and armature and fixed contacts and moveable contacts which are designed to open or close in response to the drive action of the electromagnetic drive section, each of the fixed contacts is respectively installed on a fixed terminal No. 1 , 2 and 3 , which are installed on the upper surface of the insulation base as if joining it, and is positioned at the apex of an approximate triangle on the upper surface of an insulation base, and each of the moveable contacts is installed on the lower surface of a moveable plate and is installed at a position to correspond to each of the fixed contacts, and the moveable plate is fastened to a moveable spring whose both ends are held onto the left-right sides of the insulation base and is structured to move at a specified distance from the fixed contacts due to the pressure of the moveable spring, and on the upper surface of the moveable plate, an elastic plate is installed with its one end being held by a height pin formed in the insulation base at a predetermined height, and the elastic plate has a step section in the center with the step section being positioned to contact the center of the approximate triangle connecting three contact positions of the contacts of the moveable plate, and side sections on both sides of the elastic plate, which contact the end of the armature are formed, and the drive action of the armature lowers the moveable plate against the pressure of the moveable spring, thus causing deflection to the elastic plate to connect each of the fixed contacts to each of the corresponding moveable contacts at the three contact points with uniform contact strength.