Proceding for the manufacturing of a stator for an electric motor and of an electric motor, stator and electric motor

摘要

A process for manufacturing an outer stator (11; 111; 211; 311; 411; 511) for an electric motor (13; 113; 213; 313; 413; 513) is described, said stator (11; 111; 211; 311; 411; 511) comprising stator poles (2; 102; 202; 302; 402; 502) surrounded by coils (5; 105; 205; 305; 405; 505), said process including the following steps:
- preparing a laminar body (1; 101; 201; 301; 401; 501), of ferromagnetic material, with elongated form and provided with laminar protrusions (2; 102; 202; 302; 402; 502);
- inserting a coil (5; 105; 205; 305; 405; 505) of conductive material around each of said laminar protrusions (2; 102; 202; 302; 402; 502);
- deforming the terminal zones (7; 107; 207; 307; 407; 507) of said laminar protrusions (2; 102; 202; 302; 402; 502) such that said terminal zones (7; 107; 207; 307; 407; 507) assume a preferably outwardly curved form;
- closing said laminar body (1; 101; 201; 301; 401; 501) such that said laminar protrusions (2; 102; 202; 302; 402; 502) are in internal position and adapted to serve as stator poles.