US 12,081,083 B2
Rotor for an electric motor, electric motor, and method for producing a rotor
Martin Lehmann, Hornberg (DE)
Assigned to NEUMAYER TEKFOR ENGINEERING GMBH, Hausach (DE)
Appl. No. 17/413,025
Filed by Neumayer Tekfor Engineering GmbH, Hausach (DE)
PCT Filed Oct. 9, 2019, PCT No. PCT/DE2019/000260
§ 371(c)(1), (2) Date Jun. 11, 2021,
PCT Pub. No. WO2020/119840, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 10 2018 009 831.2 (DE), filed on Dec. 14, 2018.
Prior Publication US 2022/0021285 A1, Jan. 20, 2022
Int. Cl. H02K 15/03 (2006.01); H02K 7/00 (2006.01); H02K 15/00 (2006.01)
CPC H02K 15/03 (2013.01) [H02K 7/003 (2013.01); H02K 15/0012 (2013.01); Y10T 29/49009 (2015.01)] 11 Claims
OG exemplary drawing
 
1. A rotor for an electric motor, comprising:
a shaft; and
a laminated core supported on the shaft,
wherein
the laminated core is formed from a first electrical sheet material,
a central portion of the shaft which supports the laminated core is formed from a second electrical sheet material,
the shaft includes two end components connected to the central portion of the shaft, and
the two end components are formed from a material which is different from the central portion material and which has a higher strength or hardness than the central portion material.