Stator core

摘要

A stator core includes at least one bendable strip-shaped core. Each strip-shaped core is formed by stacking a plurality of laminations. Each lamination includes at least two yoke portions and at least two tooth portions. Every two adjacent yoke portions are connected to each other via a bendable portion and have two opposite end surfaces, one of the end surfaces having a groove and the other having a projecting rib. After the bendable portion is bent the projecting rib is engaged in the groove to form an interlock structure such that relative circumferential movement between the adjacent yoke portions is limited.

主权项

1. A stator core of an electric motor, comprising at least one bendable strip-shaped core, the at least one bendable strip-shaped core forming a circumferential configuration after being bent, each strip-shaped core being formed by stacking a plurality of bendable strip-shaped laminations, each lamination comprising at least two yoke portions and at least two tooth portions extending from the yoke portions, every two adjacent yoke portions being connected to each other by a bendable portion and having two opposite end surfaces, one of the end surfaces having a groove and the other having a projecting rib, wherein before the bendable portion is bent the two end surfaces are spaced from each other, and after the bendable portion is bent the two end surfaces are joined together by the projecting rib being engaged in the groove to form an interlock structure such that the relative circumferential movement between the adjacent yoke portions is limited,
wherein the interlock structure is inwardly inclined relative to a radial plane passing through the center of the tooth portion adjacent the joined end surfaces.