Patent ID: 8816803

Claim:
A contact mechanism, comprising: a movable contact comprising a conductive plate supported by a movable part, and a pair of movable contact point parts on two ends of the conductive plate; and fixed contacts, each being formed facing each of the two ends of the conductive plate and comprising a first conductive plate part supporting a fixed contact point part facing one of the pair of movable contact point parts facing thereto, and extending outwardly from one end of the conductive plate in parallel with the conductive plate, a second conductive plate part extending from an outer end part of the first conductive plate part through outside of an end part of the conductive plate to form an L-shape with the first conductive plate part, and a third conductive plate part extending inwardly from an end part of the second conductive plate part in parallel with the conductive plate to form a U-shape with the first conductive plate part and the second conductive plate part, wherein the first conductive plate part, the second conductive plate part, and the third conductive plate part have a uniform width throughout the U-shape, and directly face the movable contact, and a current flows in opposite directions in the third conductive plate part and the conductive plate to generate a Lorentz force acting against an electromagnetic repulsion in an opening direction of the movable contact generated between the fixed contacts and the movable contact upon conduction of the current.