Stator of a three-phase electronically commutated dc motor
AssigneeBühler Motor GmbH
InventorsGeorg Bernreuther, Matthias Ahrens
Life of this patent
Estimating the term…
Abstract
A stator of a three-phase electronically commutated DC motor, having a stator core, an insulating material body and a coil wire, wherein the stator core has a closed back iron and a plurality of stator poles pointing radially inwardly from the back iron, which contacts the insulating material body axially at the stator core, and covers both the back iron and also the stator poles. The stator is for a brushless DC motor designed in such a way that it is designed for a 48V on-board electrical system, being especially compact and nevertheless reliably preventing coil wires of different phases from touching each other and an economical production process being used.
Claims28
A stator of a three-phase electronically commutated DC motor, the stator comprising:
- a stator core having a closed back iron and a plurality of wound stator poles pointing radially inwardly from the back iron, the wound stator poles defining a plurality of phases;
- an insulating material body surrounding both the back iron and the stator poles;
- a coil wire which contacts the insulating material body axially at the stator core;
- an annular wire guidance region defined on the insulating material body with radially outwardly open wire guidance contours extending substantially along a circular shape and partially helical in shape;
- and
- a plurality of terminal projections on the annular wire guidance region,
- wherein the coil wire is wound around the wound stator poles to define each phase and each phase has a phase wire section, wherein the phase wire sections run between the wound stator poles and are kept apart from each other by the wire guidance contours in such a way that no contact occurs between parallel-running and skewed-crossing phase wire sections of different phases.
Dependencies are inferred from the claim text.