Motor-fan assembly for vacuum cleaner

摘要

Structure for maintaining accurate spacing between opposed pole elements of a split-field coil structure. The motor structure includes a support for supporting the armature for rotation about an axis and a field coil structure having opposed C-shaped laminated cores. Each core has a pair of legs forming motor poles, each pole being defined by an arcuate surface spaced radially from the armature and a distal end surface. The core further defines a bight portion extending between the legs. The field coil is wound about a two-piece bobbin which serves further to retain the laminations of the field coil in stacked, assembled relationship. The end surfaces of the legs of the cores are in spaced, opposed alignment, with the support portion fitting therebetween for providing the accurately maintained minimum spacing between the pole end surfaces.