US 12,081,072 B2
Electronically commutated motor, fan with electronically commutated motor, and household appliance
Robert Blaz, Humenne (SK); Viliam Farkas, Michalovce (SK); and Martin Kuco, Michalovce (SK)
Assigned to BSH Hausgeraete GmbH, Munich (DE)
Filed by BSH Hausgeraete GmbH, Munich (DE)
Filed on Jan. 20, 2022, as Appl. No. 17/580,073.
Claims priority of application No. 21154545 (EP), filed on Feb. 1, 2021.
Prior Publication US 2022/0247245 A1, Aug. 4, 2022
Int. Cl. H02K 1/18 (2006.01); F04D 25/06 (2006.01); F04D 29/056 (2006.01); H02K 7/08 (2006.01); H02K 21/22 (2006.01)
CPC H02K 1/187 (2013.01) [F04D 25/06 (2013.01); F04D 25/0613 (2013.01); F04D 29/056 (2013.01); H02K 7/088 (2013.01); H02K 21/22 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electronically commutated (EC) motor, comprising:
a rotor having a rotor case and at least one permanent magnet being fixed to said rotor case;
a stator;
a shaft;
a bearing assembly supporting said rotor case about said shaft; and
an intermediate connector connecting said stator to said shaft so as to be at least partially disposed in a radially outer circumference of said bearing assembly, the intermediate connector separating said stator and said shaft with no direct contact between said stator and said shaft, said intermediate connector being a different material than said shaft, said intermediate connector being made of a resilient plastic material, a connection of said intermediate element with said shaft being configured for absorbing vibrations, said connection being resilient in a designated direction of rotation of said rotor, a resilience of said connection of the intermediate connector with said shaft being larger in a circumferential direction than in an axial direction of said shaft with a stiffness of said intermediate connector being smaller in a direction normal to the direction of rotation than in the axial direction.