Double-permanent-magnet large-small pole face monostable electromagnetic mechanism

The invention discloses a double-permanent-magnet large-small pole face monostable electromagnetic mechanism. The mechanism comprises a coil, a coil skeleton, a rotation shaft, an armature, yokes and permanent magnets, wherein the yokes include a left yoke, a right yoke and a lower yoke, the left yoke and the right yoke are opposite to each other, the coil skeleton and the coil are arranged between the left yoke and the right yoke, the lower yoke is arranged between the left yoke and the right yoke and above the coil, two ends of the lower yoke is connected with the left yoke and the right yoke respectively through the permanent magnets, the armature is in pivoted connection the lower yoke through the rotation shaft and is arranged above the lower yoke, and two ends of the armature are respectively provided with a first pole surface and a second pole surface which are respectively in contact with the left yoke and the right yoke.