Method of manufacturing a rotor for an electric motor for a washing machine
AssigneeWhirlpool Corporation
InventorsLuiz V. Dokonal, Evandro J. Meurer, Orlando Starke
Life of this patent
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Abstract
A method of manufacturing a rotor of an electric motor is disclosed. The method includes securing a plurality of permanent magnets to a sheet to form a magnet chain, bending the sheet to engage an inner surface of each permanent magnet with a curved outer surface of an insert mold, wrapping a metallic strip around an outer surface of the sheet to form a yoke of the rotor, and molding a polymeric material over the magnet chain and the yoke to form a cylindrical shell.
Claims21
A method of manufacturing a rotor of an electric motor, comprising:
- securing a plurality of permanent magnets to a sheet to form a magnet chain,
- bending the sheet to engage an inner surface of each permanent magnet in direct contact with a curved outer surface of an insert mold,
- wrapping a metallic strip around an outer surface of the sheet to form a yoke of the rotor, and
- molding a polymeric material over the magnet chain and the yoke to form a cylindrical shell.
A method of manufacturing a rotor, comprising:
- securing a plurality of magnets to a sheet to form a Halbach magnet array,
- engaging an inner surface of each of the plurality of magnets into direct contact with a curved outer surface of an insert mold,
- bending a metallic strip to engage an outer surface of the sheet, and
- molding a polymeric material over the magnets and the metallic strip to form the rotor.
A method of manufacturing a rotor, comprising:
- attaching a first number of magnets to a first sheet to form a first magnet chain,
- attaching a second number of magnets to a second sheet to form a second magnet chain,
- bending the first sheet to engage an inner surface of each magnet of the first magnet chain in direct contact with a curved outer surface of an insert mold,
- bending the second sheet to engage an inner surface of each magnet of the second magnet chain in direct contact with the curved outer surface of the insert mold,
- wrapping a metallic strip around the first sheet and the second sheet, and
- molding a polymeric material over the first magnet chain, the second magnet chain, and the metallic strip to form a cylindrical shell.
Dependencies are inferred from the claim text.