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US 7,732,970 B2Granted
Rotor for an electric machine
AssigneeZF Friedrichshafen AG
InventorsHubertus Büttner, Marcus van Heyden, Markus Deutel, Alfons Vollmuth
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Abstract
A rotor for an electric machine includes a rotor carrier having a cylindrical axial support portion which extends axially with respect to an axis of rotation of the rotor, a sheet pack which includes a plurality of lamellar sheets and is attached to the axial support portion at an attachment area, and a first weld in the sheet pack at a predetermined distance away from the attachment area to fasten a plurality of the lamellar sheets together.
Claims13
A rotor for an electric machine comprising:
- a rotor carrier comprising a cylindrical axial support portion extending axially with respect to an axis of rotation of said rotor;
- a sheet pack comprising of a plurality of lamellar sheets, said sheet pack being attached to said axial support portion at an attachment area, said sheet pack having an inside circumferential surface radially opposite from said attachment area;
- and
- a first weld formed in said sheet pack at a predetermined radial distance away from said attachment area and at a predetermined radial distance away from said inside circumferential surface, wherein said first weld extends axially into said sheet pack through only some of said lamellar sheets.
1 more element
Dependencies are inferred from the claim text.