Patent ID: 6426689
Filing Date: 2002-07-30
Classification: H01H

Abstract:
An electromagnetic relay comprising:a yoke having two ends bent in a first direction; a coil portion wound onto a central part between the ends of the yoke; a permanent magnet arranged between the ends of the yoke; an armature formed to have a greater length than that between the ends of the yoke and provided on a first side of the permanent magnet; a hinge spring capable of causing both end sides of the armature to be toggle with respect to the ends of the yoke, and the hinge spring integrally fixing the permanent magnet and the armature; an auxiliary yoke having a length which is approximately equal to the length defined between the ends of the yoke and provided on the other side of the permanent magnet opposite to the one side of the permanent magnet, wherein the permanent magnet is formed as a plate having a smaller length than that between the ends of the yoke, the armature is formed as a plate and having a protrusion on a surface opposed to the permanent magnet, the hinge spring is defined by a central part attached to a surface on one side in the armature and both side parts extended from the central part along the armature to attach to both side faces of the auxiliary yoke respectively to hold the permanent magnet, and the hinge spring integrally fix the permanent magnet, the armature and auxiliary yoke.