Rotor assembly for electric motor
AssigneeJohnson Electric International AG
InventorsYvan Bourqui, Daniel Soncini, Bruno Neuhaus
Life of this patent
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Abstract
A rotor assembly is provided for an electric motor. The rotor assembly includes: a cylindrical magnet member having magnetization in both axial and radial directions, the magnet member being formed from a moldable magnetic material; and an output shaft receivable within the magnet member. An inner surface of the magnet member and an outer surface of the output shaft have complementarily-engagable interface elements thereon to prevent or limit dislocation of the magnet member and output shaft, and at least one of the interface elements is formed by overmolding of the magnet member and output shaft with the other of magnet member and output shaft.
Claims20
A rotor assembly comprising:
- a cylindrical magnet member having magnetization in both axial and radial directions;
- and
- an output shaft receivable within the magnet member;
- wherein an inner surface of the magnet member and an outer surface of the output shaft have complementarily-engagable interface elements thereon to prevent or limit dislocation of the magnet member and output shaft, at least one of the interface elements being formed by overmolding of one of the magnet member and output shaft with the other of magnet member and output shaft.
Dependencies are inferred from the claim text.