Stator, slotless electric motor and tool for manufacturing a stator

Abstract

Stator (2) for use in a slotless electric motor (1), in particular an electronically commutated motor, with a winding body (21) in the form of a hollow cylinder, consisting of three or more coils (26), and with a working section (15) located between two winding heads (23, 23') at two longitudinal ends of the winding body (21), and with a cylindrical stator lamination stack (22) that closely surrounds the working section (15) of the winding body (21); wherein the two winding heads (23, 23') consist of the longitudinal ends (28) of the three or more coils (26); wherein the two winding heads (23, 23') fix the stator lamination stack (22) along a longitudinal axis (19) of the winding body by positive locking; wherein the two winding heads (23, 23') have the shape of a circular flange with an inner radius (r wh ) exhibiting an inner radius that is substantially or nearly equal to the inner radius (r) ws) of the working section (15) of the winding body (21); and wherein the two winding heads (23, 23') of the winding body (21) have an outer radius (R wh ) exhibit an outer radius (R) that is substantially or nearly equal to an outer radius. sls ) of the stator lamination stack (22).

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