Alternator rotor, particularly for motor vehicles
AssigneeIndustrie Magneti Marelli S.r.l.
InventorLorella Annovazzi
Life of this patent
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Abstract
The rotor comprises a shaft from which two facing pole plates extend radially, each having a plurality of radial pole fingers whose ends are bent towards the other pole plate and each of which extends between two adjacent fingers of the other pole plate. An excitation winding is situated between the plates coaxial with the shaft. At least one axial ventilation duct is formed in the shaft from which branch radial ducts in correspondence with the pole plates, the ducts communicating with the corresponding ventilation passages provided in each pole plate, which open into recesses defined between pairs of adjacent pole fingers.
Claims2
An alternator rotor, particularly for motor vehicles, comprising a shaft from which two facing pole plates extend radially, each having a plurality of radial pole fingers whose ends are bent towards the facing pole plate and each of which extends between two adjacent fingers of the facing pole plate;
- at least one excitation winding being situation between the plates coaxial with the shaft;
- at least one axial ventilation duct being forming in the shaft from which branch radial ducts in alignment with the pole plates, a plurality of radial ventilation passages provided in each pole plate which are in communication with said radial ducts and which open into recesses defined between pairs of adjacent pole fingers.
Dependencies are inferred from the claim text.