Patent ID: 8339222
Filing Date: 2012-12-25
Classification: H01H

Abstract:
1. An electromagnetic relay comprising: a coil configured to generate an electromagnetic force when the coil is energized; a movable member movable in an axial direction of the movable member; a first contact arranged on a first contact support; a second member arranged on a second contact support; a movable body having a first planar surface in contact with the movable member and first and second movable contacts respectively configured to contact and be separated from the first and second fixed contacts; a pressure spring in contact with a second planar surface of the movable body and configured to urge the movable body such that the first and second movable contacts respectively contact the first and second fixed contacts; a return spring configured to urge the movable body via the movable member such that the first and second movable contacts are separated from the first and second fixed contacts, respectively, wherein the first and second movable contacts contact the first and second fixed contacts and the movable member is separated from the movable body when the movable member is driven by the electromagnetic force of the coil; a fixed-side contact member fixed to a predetermined position; and a movable-side contact member arranged on the movable body, the movable-side contact member being configured to contact the fixed-side contact member when the movable contacts contact the first and second fixed contacts, wherein the fixed-side contact member is arranged away from a line passing through the first and second fixed contacts, the movable-side contact member is arranged away from a line passing through the first and second movable contacts, the movable member and the pressure spring are substantially coaxial with each other and are arranged on opposite sides of the movable body, when the coil is de-energized, the return spring presses against the movable member, which presses against the first planar surface of the movable body which moves in the axial direction against resilience of the pressure spring to a position where the movable body is separated from the first fixed contact, the second fixed contact, and the fixed-side contact member, and when the coil is energized, the resilience of the pressure spring presses against the second planar surface of the movable body which moves the movable member in the axial direction to a position where the movable body contacts the first fixed contact, the second fixed contact and the fixed-side contact member.