Rotor of an electric motor, method for manufacturing a rotor and electric motor
AssigneeBrose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg
InventorsMurat Akkaya, Antonio Surian, Michel Lanza
Life of this patent
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Abstract
A rotor of an electric motor includes a rotor package with a plurality of radially directed rotor teeth and a commutator with a number of commutator bars which is twice as large as the number of rotor teeth. Diametrically opposed commutator bars are respectively connected to a contact bridge. A rotor winding includes a plurality of coils wound on the rotor teeth. Each coil has first and second coil ends and the first and second coil ends of each coil are connected directly to commutator bars that are not adjacent to each other. A method for manufacturing a rotor and an electric motor, are also provided.
Claims8
A rotor of an electric motor, the rotor comprising:
- a rotor stack having a number of radially directed rotor teeth;
- a commutator having a number of commutator bars being twice as large as said number of rotor teeth;
- contact bridges each interconnecting a respective two of said commutator bars lying diametrically opposite one another;
- a rotor winding including first and second coils wound in opposite winding directions on each of said rotor teeth;
- said first and second coils of each three respective adjacent rotor teeth being wound continuously from one respective winding wire forming a coil group;
- said winding wire of each coil group for said rotor teeth disposed successively in a circumferential direction being wound alternately as said first and second coils on said three adjacent rotor teeth, with a winding direction alternating for successive adjacent rotor teeth, causing each rotor tooth to be initially wound with said respective first or second coil and each rotor tooth to be subsequently wound with said respective second or first coil;
- and
- each of said coils having first and second coil ends, said first and second coil ends of each of said coils being connected directly to respective commutator bars not being adjacent to each other.
Dependencies are inferred from the claim text.