Patent ID: 8519811
Filing Date: 2013-08-27
Classification: H01H

Abstract:
1. An electromagnetic relay comprising: a coil for generating an electromagnetic force when energized; a movable member capable of being attracted by the electromagnetic force of the coil; two fixed contact retainers having fixed contacts; a plate-like movable element having a plurality of movable contacts capable of contacting the fixed contacts and separating from the fixed contacts; a contact pressure spring for biasing the movable element in a direction for bringing the fixed contacts and the movable contacts into contact with each other; and a magnet arranged near a specific movable contact among the plurality of the movable contacts to be lateral to an outer periphery of the movable element, wherein when the movable member is attracted by the electromagnetic force of the coil, the movable member moves in a direction for separating from the movable element, the fixed contacts contacting the movable contacts because the contact pressure spring biases the movable element, when a first Lorentz force acting on a portion of the movable element extending from the specific movable contact to the end portion of the movable element on the first end side is directed in a direction for bringing the fixed contacts and the movable contacts into contact with each other, a second Lorentz force acting on a portion of the movable element extending from the specific movable contact to the another end portion of the movable element of the second end side is directed in a direction for separating the fixed contacts and the movable contacts from each other, and the first Lorentz force is larger than the second Lorentz force, whereby a resultant Lorentz force as the sum of the both Lorentz forces is a force in a direction for bringing the fixed contacts and the movable contacts into contact with each other.