US 12,278,519 B1
Electric machine with multiple toothed spacers in coils
Victor Kislev, Kfar Yona (IL); Ruslan Shabinski, Maale Adumim (IL); Eliyahu Rozinsky, Hod Hasharon (IL); and Oleg Gaspar, Tel Aviv (IL)
Assigned to EVR MOTORS LTD, Petah Tikva (IL)
Filed by EVR MOTORS LTD, Petah Tikva (IL)
Filed on Dec. 28, 2023, as Appl. No. 18/398,472.
Int. Cl. H02K 1/14 (2006.01); H02K 1/276 (2022.01); H02K 21/16 (2006.01)
CPC H02K 1/146 (2013.01) [H02K 1/276 (2013.01); H02K 21/16 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electric machine, comprising:
a plurality of coils configured to be arranged about an axis of rotation of the electric machine, wherein each coil defines a coil opening extending towards the axis of rotation from a radially outer end to a radially inner end, and wherein each coil opening includes a first section, a second section, and an intermediate section between the first section and the second section;
at least one first yoke;
a plurality of first wedge-shaped teeth integrally formed with and extending from the at least one first yoke, and wherein each of the plurality of first wedge-shaped teeth extend into a differing one of the plurality of coil openings in the first section thereof;
at least one second yoke;
a plurality of second wedge-shaped teeth integrally formed with and extending from the at least one second yoke, and wherein each of the plurality of second wedge-shaped teeth extend into a differing one of the plurality of coil openings in the second section thereof;
at least one intermediate yoke between the at least one first yoke and the at least one second yoke; and
a plurality of intermediate wedge-shaped teeth integrally formed with and extending from the at least one intermediate yoke, and wherein the plurality of intermediate wedge-shaped teeth extend into a differing one of the plurality of coil openings in the intermediate section thereof,
wherein, when the plurality of first, second, and intermediate wedge-shaped teeth are disposed in the coil openings of the plurality of coils, the at least one first yoke, the at least one second yoke, and the at least one intermediate yoke cooperate to form an annular ring extending about the axis of rotation at the radially outer end of the coil openings.