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US 2020/0395801 A1Published application
Electrical machine rotor with eliminated iron bridge
AssigneeFord Global Technologies, LLC
InventorsFranco LEONARDI, Michael W. DEGNER, Chun TANG, Edward Chan-Jiun JIH, Kewei XIAO
Life of this patent
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Abstract
A rotor for an electric machine includes pairs of magnets with a bridge region therebetween. Lamination that comprise the rotor may define openings in the bridge region between the magnets of each of the pairs. A clip may be installed in the openings and a bonding material may fill the remainder of the bridge region.
Claims20
A rotor for an electric machine comprising:
- a plurality of magnets;
- a core comprised of stacked laminations that define pockets, between a hub portion and a pole portion, for receiving pairs of magnets, and that define a first projection extending from the pole portion and a second projection extending from the hub portion, the first projection and the second projection disposed in a bridge region between magnets that comprise the pairs;
- a bonding material disposed in the pockets;
- and
- a clip disposed within the pockets, embedded in the bonding material, and cooperating with the first projection, the second projection, and the bonding material to provide a structural connection between the hub portion and pole portion.
2 more elements
A rotor for an electric machine comprising:
- a plurality of magnets;
- a core comprised of stacked laminations that define pockets, between a hub portion and a pole portion, for receiving pairs of magnets, and that define a first concavity in the pole portion and a second concavity in the hub portion, the first concavity and the second concavity disposed in a bridge region between magnets that comprise the pairs;
- a clip disposed within the pockets and connecting the first concavity and the second concavity;
- and
- a bonding material disposed in the pockets and embedding the clip, the first concavity and the second concavity.
2 more elements
A rotor for an electric machine comprising:
- a plurality of magnets;
- a core comprised of stacked laminations that define pockets, between a hub portion and a pole portion, for receiving pairs of magnets, and that define an opening in a bridge region between magnets that comprise the pairs;
- a bonding material disposed in the pockets in the bridge region;
- and
- at least one non-magnetic element embedded in the bonding material in the bridge region and extending axially in the core.
2 more elements
Dependencies are inferred from the claim text.