STATOR, MANUFACTURING METHOD THEREFOR, AND ROTARY ELECTRIC MACHINE THAT INCLUDES STATOR

摘要

A stator is configured so as to have an annular shape by linking core blocks that are each produced by laminating electromagnetic steel sheets and that each have a yoke portion and a tooth portion by bendable first linking portion, concentrated winding coils are each produced by winding a conductor wire around the tooth portion for a number of turns so as to pass through concave spaces that are formed by the trunk portions and first and second guiding portions of first and second insulating bobbins, and current-carrying member holding portions that hold first current-carrying members that configure the concentrated winding coils into alternating-current connections are constituted by holding grooves that are each formed so as to open radially outward and so as to pass through the first guiding portions circumferentially, and that are arranged in three layers in an axial direction.

主权项

1. A stator comprising:
a stator core including a rectilinear core member that is produced by laminating electromagnetic steel sheets in which core blocks that each have a yoke portion and a tooth portion that protrudes radially inward from an inner circumferential wall surface of said yoke portion are constituted by linking outer circumferential edge portions of circumferential side surfaces of said yoke portions by bendable first linking portions, said stator core being configured into an annular shape by bending said first linking portions; a plurality of pairs of insulating bobbins that each have:
a trunk portion; andfirst and second guiding portions that protrude at two longitudinal ends of an upper surface of said trunk portion,said plurality of pairs of insulating bobbins being each disposed on two axial end surfaces of said core blocks such that longitudinal directions of said trunk portions are oriented in a radial direction of said tooth portions and bottom surfaces of said trunk portions are placed alongside axial end surfaces of said tooth portions; a plurality of coils that are each produced by winding a conductor wire around said tooth portions for a predetermined number of turns so as to pass through concave spaces that are formed by said trunk portions and said first and second guiding portions of said insulating bobbins that are disposed on said two axial end surfaces of said core blocks; and a plurality of current-carrying members to which coil terminals of said plurality of coils are connected to configure said plurality of coils into an alternating-current connection, wherein current-carrying member holding portions that hold said plurality of current-carrying members are formed on said first guiding portions that are positioned on a radially outer side of said insulating bobbins.