ELECTROMAGNET LOCK Russian patent published in 2013 - IPC E05B47/02 

FIELD: construction.

SUBSTANCE: electromagnet lock comprises a cylindrical body, a front bushing, a stem, a stop ring, a crossbar axis, an electromagnet coil, the diameter of cheeks in which is equal to the inner diameter of the body, a cylindrical return spring, a crossbar, a pad, a plate with a hole for the crossbar. On the inner surface of the rear part of the body there is a bore, in which the stop ring is inserted. In the front part of the body in the diametrical plane there are two longitudinal slots made, where the crossbar axis is installed. On the front end surface of the body there is a pad fixed, having a rectangular hole for the crossbar, one of sides of which is parallel to the axis. The front bushing is made in the form of a cylinder with a flange, the outer diameter of which is equal to the inner diameter of the body. The hole of the cylindrical part of the front bushing has a section of a larger diameter, arranged at the side of the flange of the front bushing, and a section of a smaller diameter. The front bushing is arranged inside the body with the possibility of movement. The stem is made of a non-magnet material and is installed in the hole of the cylindrical part of the front bushing as capable of movement. The crossbar is arranged on the basis of a parallelepiped, in the base of which along the axis of symmetry there is a bore made, in parallel to the bore along the axis of the lock symmetry. On the side surface of the crossbar there is a hole. The crossbar surface opposite to the surface, on which there is a bore, is slanted, and on the faces of the surface with the bore, in parallel to the bore there are faces made. The crossbar with the help of the hole is installed on the axis in longitudinal slots so that the crossbar base adjoins the outer surface of the front bushing, and its slanted surface protrudes beyond the external surface of the pad via a rectangular hole, the perimetre of which corresponds to the perimetre of the protruding part of the crossbar, and the base of the crossbar adjoins the outer surface of the front bushing. Opposite to the pad there is a plate installed with a hole for the crossbar, where the crossbar enters, besides, the body, the front bushing are made of a magnetoconductive material. The lock additionally includes a cylindrical permanent magnet. The stem comprises two parts of cylindrical shape, the first part has the diameter equal to the larger diameter, holes of the cylindrical part of the front bushing, besides, the length of the first part of the stem corresponds to the length of the hole of larger diameter of the cylindrical part of the front bushing, the second part of the stem has a diameter equal to the smaller diameter of the hole of the cylindrical part of the front bushing, the bushing, the hole diameter of which is equal to the diameter of the second part of the front bushing, and the outer diameter is equal to the diameter of the coil hole, the width of the bore on the crossbar is equal to the larger diameter of the stem. On the end of the second part of the stem there is a bushing placed and fixed. On the outer side of which there is a cylindrical permanent magnet fixed by forces of magnetic gravity. The electromagnet coil is installed in the body so that one cheek touches the stop ring, and the second one - the second end of the cylindrical return spring. The diameter of the coil hole is equal to the outer diameter of the cylindrical part of the front bushing. The cylindrical part of the front bushing, the bushing, the cylindrical permanent magnet are installed in the coil hole as capable of displacement.

EFFECT: reduced number of parts, higher reliability and reduced power consumption.

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