US 12,068,638 B2
Rotor, electric motor, method for producing a rotor and use of a rotor and electric motor
Mathias Schröder, Chemnitz (DE); and Roland Buol, Wangs (CH)
Assigned to thyssenkrupp AG, Essen (DE)
Appl. No. 17/261,225
Filed by thyssenkrupp AG, Essen (DE)
PCT Filed Jul. 19, 2019, PCT No. PCT/EP2019/069549
§ 371(c)(1), (2) Date Jan. 19, 2021,
PCT Pub. No. WO2020/020787, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 10 2018 212 431.0 (DE), filed on Jul. 25, 2018.
Prior Publication US 2021/0273510 A1, Sep. 2, 2021
Int. Cl. H02K 1/28 (2006.01); H02K 1/02 (2006.01); H02K 1/276 (2022.01); H02K 1/32 (2006.01); H02K 7/00 (2006.01)
CPC H02K 1/28 (2013.01) [H02K 1/02 (2013.01); H02K 1/2766 (2013.01); H02K 1/32 (2013.01); H02K 7/003 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A rotor, comprising
a shaft with a longitudinal axis, and
a rotor packet connected to the shaft at least in a torsion-resistant manner,
wherein the rotor packet comprises individual sheet lamellae,
wherein the rotor packet comprises an opening sized and shaped to receive the shaft,
wherein the shaft is a hollow shaft with a wall, wherein the wall of the shaft comprises, on its side facing toward the opening, recesses extending in the longitudinal direction, and wherein each of the recesses is an elongated hole through the wall of the shaft, wherein the elongated hole penetrates radially through the wall of the shaft from an outermost wall to an innermost wall.