US 11,984,765 B2
Rotor tube for an electric machine of a vehicle
Freerk Jacobus Oude Kotte, Stein (DE); and Peter Seitz, Pommelsbrunn (DE)
Assigned to Siemens Mobility GmbH, Munich (DE)
Appl. No. 17/280,344
Filed by SIEMENS MOBILITY GMBH, Munich (DE)
PCT Filed Sep. 3, 2019, PCT No. PCT/EP2019/073382
§ 371(c)(1), (2) Date Mar. 26, 2021,
PCT Pub. No. WO2020/064272, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 102018216490.8 (DE), filed on Sep. 26, 2018.
Prior Publication US 2021/0367466 A1, Nov. 25, 2021
Int. Cl. H02K 1/30 (2006.01); B61C 9/38 (2006.01); H02K 1/32 (2006.01); H02K 7/08 (2006.01)
CPC H02K 1/30 (2013.01) [B61C 9/38 (2013.01); H02K 1/32 (2013.01); H02K 7/085 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An electric machine for a rail vehicle, the electric machine being a permanent magnet-excited synchronous machine for a direct drive of a wheelset shaft of the rail vehicle, the electric machine comprising:
a rotor tube surrounding the wheelset and being coupled to the wheelset by a coupling, the rotor tube including:
a longitudinal axis of the rotor tube;
an outer tube having opposite end regions;
a first coupling section and a second coupling section each coupled to a respective one of said opposite end regions of said outer tube relative to said longitudinal axis of the rotor tube, at least said first coupling section serving as a connection point for the coupling;
a first hub and a second hub each coupled to a respective one of said opposite end regions of said outer tube relative to said longitudinal axis of the rotor tube;
a ventilation element coupled to said outer tube; and
an inner tube disposed inside said outer tube relative to said longitudinal axis of the rotor tube, said inner tube being surrounded by said outer tube;
said first coupling section, said second coupling section, said first hub, said second hub, said outer tube, and said ventilation element being formed in one piece as a cast component.