Armature assembly low in cost and easy to assemble

The low-cost and easy-to-assemble armature assembly comprises an armature and a push rod, the armature is provided with an assembling groove and an assembling hole, the push rod is provided with an assembling boss, an assembling guide column and a limiting groove, the upper end of the push rod is arranged to be of a groove-shaped structure with a single opening, and the lower end of the push rod is provided with a limiting groove. The assembling boss and the assembling guide columns are arranged in the groove-shaped structure, the number of the assembling guide columns is two, and in the assembling process of the armature and the push rod, the assembling guide column of the push rod plays a guiding role, so that the armature is accurately installed; the lower edge part of the armature is clamped into the limiting groove, the assembling guide column is inserted into the corresponding assembling hole, and the assembling boss of the push rod and the limiting groove achieve transverse and longitudinal fixation. D