Patent ID: 9172280
Filing Date: 2015-10-27
Classification: H01F,H02K

Abstract:
1. A core for a rotating electrical machine, the core being configured with a plurality of semi-open slots in which a width of a slot opening that opens in the radial direction of the core is narrower than a width of a portion of the semi-open slots located deeper than the slot opening of the semi-open slots, the core further comprising: a conductor wire bundle formed by gathering a plurality of bare conductor wires without adhesive material between the bare conductor wires; and a flexible insulating covering material that covers a periphery of the conductor wire bundle, wherein the conductor has an intra-covering gap formed inward of the insulating covering material in a radial direction so that the conductor wires can move relative to each other in the intra-covering gap, and a cross-sectional shape of the insulating covering material along a perpendicular plane that is perpendicular to an extending direction in which the conductor wire bundle extends can be deformed, wherein: the conductor is wound on the core, the insulating covering material is configured to be deformed by pressing the insulating covering material in the radial direction of the insulating covering material, whereby the intra-covering gap is eliminated and the conductor wires are packed as a whole into a packed state by moving the conductor wires relative to each other in the intra-covering gap in accordance with the deformation of the insulating covering material, and a width of the insulating covering material in the packed state is equal to or less than the slot opening width.