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1. WO2006103194 - MOTEUR ELECTRIQUE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS
1. An electric motor, characterized in that it comprises a stator unit having at least one first ring-shaped body made of magnetic material and one second shaped body made of magnetic material, which is structurally separate from said first body and is operatively coupled thereto, said second shaped body comprising a plurality of teeth interspersed with respect to one another by slots on which phase windings are arranged in a concentrated configuration.
2. The electric motor according to Claim 1, characterized in that said phase windings comprise a plurality of individual prefabricated coils, each fitted around a respective tooth.
3. The electric motor according to Claim 2, characterized in that fitted around each tooth is a corresponding coil.
4. The electric motor according to Claim 2, characterized in that said coils are fitted around the teeth in an alternating way, i.e., one coil every other tooth.
5. The electric motor according to one or more of the preceding claims, characterized in that said prefabricated coils comprise a bobbin made of electrically insulating material around which an electrical conductor is wound.
6. The electric motor according to Claim 5, characterized in that said bobbin comprises a shaped body having a through opening designed to receive a corresponding tooth and at least one seat in which a connection terminal of said electrical conductor is housed.

7. The electric motor according to Claim 6, characterized in that said bobbin comprises two seats, which develop in a transverse direction with respect to said through opening and house respective connection terminals of said electrical conductor, said terminals having a substantially rigid body.
8. The electric motor according to one or more of the preceding claims, characterized in that said first and second shaped bodies are made, respectively, by means of a first magnetic material and a second magnetic material which differ from one another.
9. The electric motor according to Claim 8, characterized in that said first shaped body is made of a composite magnetic material comprising electrically insulated soft ferromagnetic particles.
10. The electric motor according to Claim 8, characterized in that said second shaped body is obtained using magnetic laminations.
11. The electric motor according to one or more of the preceding claims, characterized in that said first and second shaped bodies are operatively fitted together by means of a mechanical coupling with play.
12. The electric motor according to one or more of the preceding claims, characterized in that it comprises at least one layer of electrically insulating material cast in vacuum conditions around said stator unit so as to envelop it at least partially.
13. The electric motor according to one or more of the preceding claims, characterized in that at least one of said first and second shaped bodies comprises coupling means designed to favour mutual positioning in a desired configuration.
14. The electric motor according to one or more of the preceding claims, characterized in that it comprises a connection device designed to connect electrically the phase windings to one another and to a supply source, said connection device comprising a shaped body made of electrically insulating material and a plurality of shaped elements made of electrically conductive material, said shaped elements having first seats, each designed to receive a corresponding connection terminal of said electrical conductor, and second seats for coupling with said insulating shaped body, said shaped elements being arranged so that they are coupled to said insulating shaped body and so that they are coupled with respect to one another in such a way as to define connection paths between the coils of one and the same phase and between the phase windings and the external supply source according to pre-defined paths.
15. The electric motor according to Claim 14, characterized in that said shaped electrically conductive elements are arranged with respect to one another and coupled to said insulating shaped body so as to lie substantially in one and the same plane.
16. The electric motor according to Claim 14, characterized in that said plurality of shaped elements are fitted in a snap-action way to said insulating shaped body.
17. The electric motor according to Claim 14, characterized in that said plurality of shaped elements and said insulating shaped body are made of a single co-moulded piece.
18. The electric motor according to Claim 14, characterized in that said insulating shaped body comprises a reticular structure having a plurality of openings and at least one protective rim that develops in a transverse direction with respect to the plane of lie of said plurality of shaped elements.
19. The electric motor according to the preceding Claim 14, characterized in that said insulating shaped body comprises a shaped protuberance, on which is set a connection circuit.

0. The electric motor according to one or more of the preceding claims, characterized in that it is a servo-motor of a brushless type.