ELECTROMAGNETIC DRIVE FOR SWITCHING DEVICES Russian patent published in 2008 - IPC H01H3/28 

FIELD: electrical engineering; electrical drives.

SUBSTANCE: drive is provided with a driving unit that further includes magnetic core where, at least partially, movable armature is placed, at least one driving magnet creating constant driving magnetic field, and at least one conductor that is run, at least partially, in said driving magnetic field. To lock the armature at least in one end position a locking unit is provided that further includes at least one magnetically soft movable part that is rigidly bound with the armature and shunts air gap for the locking magnetic field in each end position of the armature. The locking magnetic field is created independently from the driving magnetic field using at least one locking magnet that has assigned a detachable coil with current circulating in it independently from the conductor to get the armour out of its end position.

EFFECT: improvement of stability of locking in end positions while keeping simple the control of driving motion.

13 cl, 2 dwg