PLUNGER ELECTROMAGNET Russian patent published in 2016 - IPC H01F7/16 

FIELD: electricity.

SUBSTANCE: plunger electromagnet comprises an armature (1), a coil (2) and a magnetic core with a through flange (41) and an inner collar (5). An inner cylindrical surface of the collar (5) forms a gap with the armature (1). The collar (5) is made as a separate packing sleeve containing conical, flat and two outer cylindrical coaxial mating surfaces. The conical and the first cylindrical surfaces of the collar (5) are placed in the respective shape- and size-mating openings in a frame (3) of the coil (2). The second cylindrical surface is placed in the opening of the flange (41). The flat surface of the collar (5) is connected to the flat surface of the flange (41) from its inner side faced towards the coil frame (3).

EFFECT: simplified design, decreased own costs.

2 dwg