Alternator structure for assembly with a mobile internal combustion engine, particularly for automotive use

Alternator structure for assembly with a mobile internal combustion engine (E) particularly for automotive use having

• a housing (11);
• a stator (15, 23) located and secured in the housing;
• a rotor (19, 21) having a shaft (18) journaled in bearings (16, 17) positioned and secured in the housing;
• and attachment means (32, 33) to removably and adjustably attach the structure to the internal combustion engine,
• wherein, in accordance with the invention,
• the machine housing comprises a polygonal radially symmetrical tubular shell structure (11) and at least one end cover (12) of polygonal radially symmetrical plan outline matching the polygonal tubular housing shell structure in which at least one respective bearing (16) is secured;
• the tubular shell structure includes an outwardly extending attachment projection or arm (32) in form of an elongated bushing extending parallel to the axis of the machine, to permit passage of an attachment bolt (32a) therethrough for attachment to the internal combustion engine (E);
• the at least one end cover (12) includes a radial locating projection (33) formed with an opening in the end portion thereof to permit passage of a locating or positioning clamping bolt (33a)therethrough for attachment to the internal combustion engine (E) to fix the position of the alternator structure with respect to the internal combustion engine;
• and attachment means (34, 34') removably and selectively angularly positionable to attach said at least one end cover (12) in predetermined selected angular orientation to the shell structure (11).