Brushless electric motor, particularly for direct driving of...

H - Electricity – 02 – K

Patent

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Details

H02K 29/00 (2006.01) D06F 37/30 (2006.01) H02K 11/00 (2006.01) H02K 11/04 (2006.01) H02K 21/22 (2006.01) H02K 1/27 (2006.01) H02K 15/02 (2006.01) H02K 15/03 (2006.01)

Patent

CA 2166510

The motor comprises a rotor (30) fast for rotation with a shaft (36) of a member to be driven and a crown-like stator (10) obtained by blanking a lamination stack (12) provided with coil supporting teeth (11). Within the stator crown (10) there are obtained by blanking the lamination stack (12) a plurality of receptacles (13, 15, 17) for seating electric and electronic components associated with the stator. The components comprise a transformer (24), an inductance coil (25), a plurality of MOSs (23). The stator crown (10) is co-molded with a covering of electrically insulating plastic material to cover said receptacles (13, 15, 17) and said teeth (11) and form a tank (22) for receiving a printed circuit (21). The permanent magnet rotor is fitted with stacks of small pieces (19) obtained by blanking lamination portions within the stator crown (10). The stacks of small pieces face the magnets (31) so as to close the respective magnetic circuits.

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