/Slotless Stators And Methods For Manufacturing Such Stators
Abstract

A stator for use in a slotless electric motor, particularly an electronically commutated motor, has a winding body in the form of a hollow cylinder, consisting of three or more coils, and having a working section located between two winding heads at two longitudinal ends of the winding body, and a cylindrical stator lamination stack, close-fittingly encompassing said working section of the winding body. The two winding heads consist of the longitudinal ends of the three or more coils. They positively lock the stator lamination stack along a longitudinal axis of the winding body. The two winding heads have the shape of a circular flange with an inner radius essentially equal to an inner radius of the working section of the winding body.

Full Text

What is claimed is:

A stator for use in a slotless electric motor, particularly an electronically commutated motor, has a winding body in the form of a hollow cylinder, consisting of three or more coils, and having a working section located between two winding heads at two longitudinal ends of the winding body, and a cylindrical stator lamination stack, close-fittingly encompassing said working section of the winding body. The two winding heads consist of the longitudinal ends of the three or more coils. They positively lock the stator lamination stack along a longitudinal axis of the winding body. The two winding heads have the shape of a circular flange with an inner radius essentially equal to an inner radius of the working section of the winding body.
Timeline
Filed
04/27/2026
Published
09/03/2026
Granted
Not Available
IPC Codes(7)
H02K 3/47:Air-gap windings, i.e. iron-free windings
H02K 1/12:Stationary parts of the magnetic circuit
H02K 3/28:Layout of windings or of connections between windings (windings for pole-changing H02K 17/06, H02K 17/14, H02K 19/12, H02K 19/32)