Patent ID: 6242835
Filing Date: 2001-06-05
Classification: H02K

Abstract:
An armature core on which a winding is wound, having a core comprising:a plurality of coresheets, each sheet having teeth arranged around a central part thereof at a uniform angular interval in a circumferential direction and extending from the central part in a radial direction; andeach sheet having extended protrusion formed on a radially outermost part of each tooth, the extended protrusion being bendable to cover a slot between two of the teeth arranged adjacently in the circumferential direction,wherein the extended protrusion on one of the teeth includes a first pair of protrusion pieces which have a first same length and the extended protrusion on another of the teeth adjacent to the one of teeth includes a second pair of protrusion pieces which have a second same length different from the first same length, andwherein the sheets are stacked in an axial direction to provide a slit extending continuously over an entire length of the core in the axial direction, a width of a continuous part of the slit being narrower than a width of a slit of each core sheet.