US 12,451,775 B2
Rotor device for an electric machine, and in particular for a traction drive of a motor vehicle, as well as a method for manufacturing a rotor device
Patrick Knecht, Stuttgart (DE); Peter Wurster, Wiggensbach (DE); Tobias Engelhardt, Stuttgart (DE); Johannes Lange, Dettenheim (DE); and Florian Braunbeck, Bietigheim-Bissingen (DE)
Assigned to Dr. Ing. h. c. F. Porsche AG, Stuttgart (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Jun. 14, 2023, as Appl. No. 18/209,523.
Claims priority of application No. 10 2022 117 562.6 (DE), filed on Jul. 14, 2022.
Prior Publication US 2024/0022146 A1, Jan. 18, 2024
Int. Cl. H02K 7/00 (2006.01); H02K 1/28 (2006.01); H02K 15/03 (2006.01)
CPC H02K 15/03 (2013.01) [H02K 1/28 (2013.01); H02K 7/003 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A rotor device (1) for an electric machine (10), comprising a rotatably supported shaft (2) and at least one rotor hub (3) connected to the shaft (2) in a rotationally fixed manner, the shaft (2) having multiple radially outwardly facing shaft protrusions (12), and the rotor hub (3) having multiple radially inwardly facing hub protrusions (13), at least one shaft protrusion (12) and at least one hub protrusion (13) respectively contacting one another in a touching manner in a radial direction at least in sections, and cavities (4) are formed between the rotor hub (3) and the shaft (2), the cavities (4) respectively extending between adjacent shaft protrusions (12) and the adjacent hub protrusions (13), and the cavities (4) are grouted with at least one material (14) that forms form-fit elements (24) that block a relative movement of the rotor hub (3) and the shaft (2) in a form-fit manner.