Title: Permanent-magnet rotor of synchronous motor and manufacturing method thereof
Application Number: 200610164018 Application Date: 2006.11.20
Publication Number: 1983774 Publication Date: 2007.06.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02K15/03;H02K1/27
Applicant(s) Name: Askoll Holding SRL Address:
Inventor(s) Name: Marioni Elio
Attorney & Agent: liwen
Abstract:
    A method for obtaining, in a quick way, a strong, compact and waterproof permanent-magnet rotor (3), intended for a synchronous motor, particularly for pumps of washing machines for industrial and domestic use and the like, of the external stator type, comprising a cylindrical hollow core (6) surrounded by a plurality of permanent magnets (10) comprising the steps of arranging a cup-like body (7) with a base end (8a), a free end (8b) and a side wall (9) exhibiting a plurality of passing longitudinal recesses (12) which define, between the same, a plurality of positioning seats for the magnets (10), providing to insert the core (6) into the cup-like body (7) and arrange the magnets (10) in said seats and injecting a plastic material with obtainment of a cage-like structure (50) having opposite bottoms (27, 28) abutting at the ends (8a, 8b) of the cup-like body (7) as well as columns (29) extended between the opposite bottoms (27, 28) housed in the recesses (12). The invention also relates to a rotor obtained by means of the present method.
Time: 15