Anti -theft lock

The utility model discloses an anti -theft lock, including lock body, lock core, spring bolt and key, be equipped with battery pack, resistance, electro -magnet, touching round pin and magnetic element in the lock body, be equipped with two first through -holes along radial symmetry on the lateral wall of lock core, be equipped with insulating cover on the inner wall of first through -hole, the cladding has the dead ring on the lateral wall of lock core, insulating ring side wall goes up the cladding has the conducting ring, the conducting ring includes first conducting ring and second conducting ring, be equipped with electro -insulating rubber between first conducting ring and the second conducting ring, one side of first conducting ring and second conducting ring all is equipped with the arc contact, arc contact and lock body fixed connection, the utility model discloses a mode of the circuit break -make of physics, twin lock tonguing line -tying, when the non insulated key was unblanked or carry out the p