DRIVING ELECTROMAGNET OF AUTOMATIC SWITCH Russian patent published in 2018 - IPC H01F7/08 

FIELD: electrical equipment.

SUBSTANCE: invention relates to electrical equipment. End of the core on the armature side is formed with a segmented notch and is provided with an additional protrusion having a circular segment in the base. Chord of the notch and the chord of the additional protrusion are parallel and lie in one plane perpendicular to the surface of the end face of the core. Flat anchor made Ω-shaped with a cut in its short arm and with an annular portion in a long arm of anchor having an inner diameter greater than the diameter of the circumference of the segment protrusion and an outer diameter greater than the outer diameter of the core. Axis of rotation of Ω-shaped anchor passes between its annular and split parts parallel to the chord of the additional protrusion. Height of the additional segmental projection is chosen not less than the gap between the armature and the core.

EFFECT: technical result consists in increasing the initial tractive effort while maintaining the working stroke of the armature and retaining the magnetizing force of the coil.

1 cl, 8 dwg