US 12,255,507 B2
Electric machine assembly and method for locking rotor to stator
Ari Vartiainen, Helsinki (FI); and Teemu Laukkanen, Helsinki (FI)
Assigned to ABB Schweiz AG, Baden (CH)
Filed by ABB Schweiz AG, Baden (CH)
Filed on Nov. 22, 2022, as Appl. No. 18/057,871.
Claims priority of application No. 21209784 (EP), filed on Nov. 23, 2021.
Prior Publication US 2023/0163668 A1, May 25, 2023
Int. Cl. H02K 15/16 (2006.01); H02K 1/2713 (2022.01); H02K 7/04 (2006.01); H02K 15/165 (2025.01)
CPC H02K 15/165 (2013.01) [H02K 1/2713 (2013.01); H02K 7/04 (2013.01); H02K 2213/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electric machine assembly comprising:
a body part;
a stator stationarily supported to the body part;
a rotor adapted to rotate relative to the stator, and adapted to receive a shaft inside thereof in an operational position in which the shaft is stationarily fastened to the rotor; and
a locking system for providing a locking state for the electric machine assembly in which the rotor is locked relative to the stator;
wherein the locking system includes at
at least one locking member adapted to be in a separating position between the rotor and the stator in the locking state of the electric machine assembly; and
a plurality of radial bolt holes provided in the rotor, extending in a radial direction, and adapted to receive centring bolts such that distal ends of the centring bolts press the at least one locking member in the separating position radially outwards relative to the rotor.