ELECTROMECHANICAL LOCK Russian patent published in 2017 - IPC E05B47/02 

FIELD: physics.

SUBSTANCE: electromechanical lock includes a base 1 with an electromagnet 2 mounted thereon, closed with a lid 3. The lid 3, on its front side, has a lid groove 9 formed perpendicular to the front side of the lid 3. The bolt is designed as a sleeve fixed on the plate, that is mounted on the axis. The rod 18 is made of non-magnetic material, a sleeve 19 is fixed on one end of the rod 18, with a permanent magnet 20. A cylindrical return spring 21 is mounted in the cavity between the rod 18 and the hole 17 of the coil 16. The retainer 24 is in the form of a rectangular plate, on the top of which the axial hole 25 is located, at the bottom thereof - the retaining hole 26, and on the side surface - the hook 27. The coil 16 of the electromagnet is energized in the initial, closed state of the lock. The magnetic field of the permanent magnet 20, interacting with the magnetic field of the coil 16, generates the force compressing the return spring 21. The end of the rod 18 extends through the holes 26, 22, 23 under the field force, blocking the ability to rotate the retainer 24 on the axial sleeve 8. The lock is closed. To open the lock, the coil 16 of the electromagnet needs to be de-energized. Herewith the end of the rod 18 will be released from the retaining hole 26 under the action of the return spring 21, allowing the retainer 24 to rotate. The lock is open. When closing the door, the retainer 24 is rotated by the bolt sleeve 11 by compressing the torsion spring 30 at the beginning of the movement, and at the end of the movement, the retainer 24 is rotated by the decompressing torsion spring 30 pressing the retainer 24 to the bolt sleeve 11. The lock is closed.

EFFECT: excluding the possibility of unauthorized access, and the ability of access at the power failure.

2 cl, 5 dwg