US 12,224,626 B2
Rotor of a dynamo-electric rotary machine, dynamo-electric machine having a rotor, and method for producing the rotor
Mario Büttner, Bayern (DE); Klaus Büttner, Hollstadt (DE); Klaus Kirchner, Ostheim (DE); and Matthias Warmuth, Windshausen (DE)
Assigned to Innomotics GmbH, Nuremberg (DE)
Appl. No. 17/912,389
Filed by Innomotics GmbH, Nuremberg (DE); and Valeo eAutomotive Germany GmbH, Erlangen (DE)
PCT Filed Feb. 17, 2021, PCT No. PCT/EP2021/053883
§ 371(c)(1), (2) Date Sep. 16, 2022,
PCT Pub. No. WO2021/185522, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 20163908 (EP), filed on Mar. 18, 2020.
Prior Publication US 2023/0142750 A1, May 11, 2023
Int. Cl. H02K 1/28 (2006.01); H02K 7/04 (2006.01); H02K 15/00 (2006.01); H02K 17/20 (2006.01)
CPC H02K 1/28 (2013.01) [H02K 7/04 (2013.01); H02K 15/0012 (2013.01); H02K 15/165 (2013.01); H02K 17/20 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A rotor of a dynamo-electric rotary machine, said rotor comprising:
a rotor core arranged in concentric relation to a rotor axis and including slots which are filled with electrically conductive material;
a front short-circuiting ring arranged in concentric relation to the rotor axis at a front axial end of the slots and comprising electrically conductive material;
a rear short-circuiting ring arranged in concentric relation to the rotor axis at a rear axial end of the slots and comprising electrically conductive material, wherein at least one member selected from the group consisting of the front short-circuiting ring and the rear short-circuiting ring includes a surface facing away from the rotor core and having at least partially a bevel in an axial direction from an outer circumference to an inner circumference of the member, with the bevel defined by a bevel angle having a value of 3° to 30°; and
a support element at least partially connected to the surface of the member with a positive fit, said support element being pressed onto the member axially and supported on a shaft, said support element having a radial end which terminates at a radial end of the member.