Electrical machine e.g. three phase alternator, for motor vehicle, has intermediate space formed between ribs that are outwardly extended with radial component and comprising wedge-shaped cross-section along axial direction

摘要

The machine has a rotor supported in a housing, and a hub (60) arranged in the housing. A roller bearing is accommodated in the hub. The hub is radially connected with outside housing sections (66) by props. An intermediate space (75) is formed between ribs (72) that are outwardly extended with a radial component. The intermediate space between the ribs has a wedge-shaped cross-section along axial direction and exhibits a wedge angle that ranges between 3 degrees and 20 degrees.