Patent ID: 8773226

Claim:
A relay, comprising: a static contact piece comprising a static contact; a movable contact piece comprising a movable contact; a driving device comprising; a yoke portion; a magnet portion fixed to the yoke portion and comprising a ferrite permanent magnet polarized along a direction substantially perpendicular to the yoke portion and a bearing surface facing way from the yoke portion; two electromagnets each comprising a iron core fixed to the yoke portion and a coil wound thereon, the two iron cores being arranged at two opposite sides of the magnet portion; and a rocking armature comprising two arms connected to each other with an included angle formed therebetween and a convex joint of the two arms, the convex joint abutting against the bearing surface so that the rocking armature is capable of pivoting about the convex joint between a first position and a second position to contact a respective iron core; a housing that houses the static contact, the movable contact, and the driving device; and a push rod connected to the movable contact and the arm of the rocking armature, and being arranged slidably along a direction in the housing so that the movable contact is moved to separate from or to contact the static contact by the push rod in the first or second position of the rocking armature; the movable contact piece comprises a fixed plate fixed to the housing, a movable plate having an end to which the movable contact is fixed and a plurality of elastic arcuate plates connecting the fixed plate to an end of the movable plate remote from the movable contact, the elastic arcuate plates are thinner than both the fixed plate and the movable plate.