摘要:
The present invention provides an automotive rotary electric machine and a winding assembly manufacturing method that can simplify complicated connecting operations by mounting into a stator core a winding assembly that is produced using a predetermined number of conductor wires so as to enable windings that are electrically equivalent to zigzag connections to be configured using single conductor wires. In the present invention, a stator winding is constituted by a winding assembly that is mounted into a stator core. The winding assembly is produced by winding wires that are constituted by 2N continuous wires, and includes: slot-housed portions that are housed inside each of the slots of the stator core so as to form pairs that line up in an inner layer and an outer layer relative to a slot depth direction; first return portions at a first axial end of the stator core that link end portions of the slot-housed portions that are housed in the inner layer inside each of the slots and end portions of the slot-housed portions that are housed in the outer layer inside the slots that are (N - M) slots away; and second return portions at a second axial end of the stator core that link end portions of the slot-housed portions that are housed in the outer layer inside each of the slots and end portions of the slot-housed portions that are housed in the inner layer inside the slots that are (N + M) slots away, two ends of the (N-M) wires project at the first axial end of the stator core, and two ends of the (N + M) wires project at the second axial end of the stator core.
摘要:
The present invention provides an AC generator for a vehicle, in which a resin case (26) includes convex portions (33) formed on an outer circumferential surface of the resin case (26) so as to extend in an axial direction of the resin case (26) to be brought into pressure-contact with an inner circumferential wall surface of a counter drive-side bearing housing portion (24), and convex portions (34) formed on an inner circumferential surface of the resin case (26) so as to be opposed to the convex portions (33). The concave portions (34) allow displacement of the convex portions (33) in a radially inward direction of the resin case (26). By an elastic force generated by the displacement of the convex portions (33), the resin case (26) is integrated with the counter drive-side bearing housing portion (24).
摘要:
The present invention provides an automotive rotary electric machine and a stator manufacturing method that is used therefor in which radial widths of return portions of winding assemblies that constitute coil ends of a stator winding that are stacked in a radial direction are made sequentially greater in an outer layer, an inner layer, and an intermediate layer to enable mounting into a stator core of winding assemblies that use wires that have large cross-sectional areas, to suppress bulges in a radial direction of coil end groups, and to enable interference with a housing and a rotor to be avoided. The stator winding has winding assemblies that are disposed in a stator core so as to be stacked in three or more layers in a radial direction such that slot-housed portions line up in single columns in a slot depth direction inside slots, and radial widths of return portions of the winding assemblies that are mounted so as to be stacked in a radial direction are made sequentially narrower in order of return portions of a winding assembly that is positioned centrally, return portions of a winding assembly that is positioned on an inner circumferential side, and return portions of a winding assembly that is positioned on an outer circumferential side.