US 12,218,562 B2
Electric motor with printed circuit board
Joachim Nikola, Kraichtal (DE); and Martin Melzer, Karlsruhe (DE)
Assigned to SEW-EURODRIVE GMBH & CO. KG, Bruchsal (DE)
Appl. No. 17/767,593
Filed by SEW-EURODRIVE GMBH & CO. KG, Bruchsal (DE)
PCT Filed Sep. 11, 2020, PCT No. PCT/EP2020/025407
§ 371(c)(1), (2) Date Apr. 8, 2022,
PCT Pub. No. WO2021/069093, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 102019006990.0 (DE), filed on Oct. 8, 2019.
Prior Publication US 2023/0253854 A1, Aug. 10, 2023
Int. Cl. H02K 5/22 (2006.01); H02K 3/30 (2006.01); H02K 3/34 (2006.01); H02K 5/02 (2006.01); H02K 11/33 (2016.01); H02K 16/04 (2006.01)
CPC H02K 5/225 (2013.01) [H02K 3/30 (2013.01); H02K 3/345 (2013.01); H02K 5/02 (2013.01); H02K 11/33 (2016.01); H02K 16/04 (2013.01); H02K 2211/03 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An electric motor, comprising:
a first printed circuit board including layers having conductor tracks, the layers of the first printed circuit board being spaced apart from each other by first layers of insulating material, an insulating layer being arranged between two of the layers of the first printed circuit board;
a stator housing accommodating a stator winding of the electric motor;
a cover part; and
a retaining ring arranged between the cover part and the stator housing and accommodating the first printed circuit board;
wherein the retaining ring is sealed to the stator housing by an intermediate seal arranged as a thermal barrier, and/or the retaining ring is sealingly connected to the stator housing by an intermediate seal arranged as a thermal barrier.