US 12,237,722 B2
Laminated rotor core for a rotor, and method for producing a laminated rotor core
Wilfried Schwenk, Achern-Mösbach (DE); Michael Schlosser, Bietigheim (DE); and Patrick Wisbar, Rastatt (DE)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 17/639,756
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Jul. 9, 2020, PCT No. PCT/DE2020/100601
§ 371(c)(1), (2) Date Mar. 2, 2022,
PCT Pub. No. WO2021/043354, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 102019123433.6 (DE), filed on Sep. 2, 2019.
Prior Publication US 2022/0337106 A1, Oct. 20, 2022
Int. Cl. H02K 1/27 (2022.01); H02K 15/03 (2006.01)
CPC H02K 1/27 (2013.01) [H02K 15/03 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A laminated rotor core for a rotor of a permanently excited electric machine, the laminated rotor core comprising:
a plurality of lamination rings, each of the lamination rings including a plurality of circular segments, and each of the circular segments has, in a circumferential direction, a first end face with a connection system and a second end face with a complementary connection system, the connection system includes first, second, and third connecting elements protruding from the first end face, and the complementary connection system includes first, second, and third complementary connecting elements recessed into the second end face;
wherein each said circular segment has a plurality of receiving openings, which are arranged in a V-shape relative to each other in pairs, configured for receiving permanent magnets; and
a plurality of passages defined in the circular segments, each configured for a fixing element of the laminated rotor core, are provided, wherein the receiving openings for the permanent magnets and the plurality of passages are arranged symmetrically about a central axis of the circular segment and homogeneously along an arc length of the circular segment, and wherein a number of the receiving openings in pairs in each individual circular segment is four and a number of the passages in each individual circular segment is two.