Patent ID: 8698582
Filing Date: 2014-04-15
Classification: H01H

Abstract:
1. A relay comprising: two stators each having a fixed contact, each of the stators including an excitation portion that has a winding shape and generates a magnetic field; and a movable element having movable contacts arranged in a movable contact alignment direction, the movable element being movable in movable element moving directions including a movable element closing direction and a movable element opening direction, the movable contacts respectively coming in contact with the fixed contacts to close an electric circuit when the movable element moves in the movable element closing direction, and the movable contacts separating from the fixed contacts to open the electric circuit when the movable element moves in the movable element opening direction, wherein, in a magnetic flux of the magnetic field generated by the excitation portion, a movable element passing magnetic flux that passes through the movable element is orthogonal to a direction of current flowing in the movable element and the movable element moving directions, wherein a Lorentz force that is generated by the movable element passing magnetic flux and the current flowing in the movable element acts the movable element closing direction, wherein each of the stators further includes a fixed contact mounting plate on which the fixed contact is disposed, and the fixed contact mounting plate is positioned in the movable element closing direction with respect to the movable element, wherein the excitation portion in each of the stators includes a first plate, a second plate, a third plate, and a fourth plate, wherein the first plate extends from an end of the fixed contact mounting plate along the movable element moving direction, wherein the second plate is positioned in the movable element opening direction with respect to the movable element and extends from an end of the first plate in parallel to the movable element, wherein the third plate extends from an end of the second plate along the movable element moving direction, wherein the fourth plate is positioned in the movable element closing direction with respect to the movable element and extends from an end of the third plate in parallel to the movable element, and wherein the entire first plate and the entire third plate are located inside of the movable contacts and fixed contacts in the movable contact alignment direction.