Patent ID: 9653241
Date: 2017-05-16
CPC Classifications: H01H

Claim:
1. Magnetic actuating device for a current switching device comprising: ferromagnetic stator means and a ferromagnetic armature element which is movable between a first end position, which is close to said ferromagnetic stator means, and a second end position which is spaced apart from said ferromagnetic stator means, elastic means directly engaged with said ferromagnetic armature element and configured for urging said ferromagnetic armature element to said second end position, electrical coil means energizable for electromagnetically attracting said ferromagnetic armature element to said first end position, and a mechanical locking assembly comprising articulated-levers means operatively connected to said ferromagnetic armature element, wherein said articulated-levers means comprise rod-lever means which are pivotally connected to, and displaceable along with, a plunger of said ferromagnetic armature element, and rocking-lever means associated with the rod-lever means, said rocking-lever means being rotatable around stationary pivot means and configured for releasably locking, thereby blocking said ferromagnetic armature element in said first end position, and wherein said rod-lever means comprise a first rod-lever having a first end hinged to a respective end of said plunger, and a second rod-lever hinged to a second end of said first rod-lever and wherein said rocking lever means comprise a transom-rocking-lever hinged to a first stationary pivot and pivotally connected to said second rod-lever and a latching-rocking-lever hinged to a second stationary pivot and releasably connectable to said transom-rocking-lever, said rocking-lever means further comprising a release-lever hinged to a third stationary pivot and configured for preventing, in said locking configuration, a rotation of said latching-rocking-lever.