| 摘要 |
A method for obtaining, in a quick way, a strong, compact and waterproof permanent-magnet rotor ( 3 ), intended for a synchronous motor ( 1 ), particularly for pumps of washing machines for industrial and domestic use and the like, of the external stator ( 2 ) 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 ( 8 a), a free end ( 8 b) and a side wall ( 9 ) exhibiting a plurality of passing longitudinal recesses ( 12 ) which define, between the same, a plurality of positioning seats (13) for the magnets ( 10 ), providing to insert the core ( 6 ) into the cup-like body ( 7 ) and arrange the magnets ( 10 ) in said seats ( 13 ) and injecting a plastic material with obtainment of a cage-like structure ( 50 ) having opposite bottoms ( 27, 28 ) abutting at the ends ( 8 a, 8 b) 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 ( 3 ) obtained by means of the present method.
|
