US 11,658,529 B2
Permanent magnet rotor for electric motor and corresponding air pulsing device
Cordula Quitsch, Creteil (FR); Maxime Pagnard, Creteil (FR); Aziz Bougrassa, Creteil (FR); Omar Bougrassa, Creteil (FR); Laurent Labaste-Mauhe, Creteil (FR); Benjamin Loret, Creteil (FR); and Anthony Brisset, Le Mesnil Saint Denis (FR)
Assigned to Valeo Equipements Electriques Moteur, Creteil (FR)
Appl. No. 16/633,822
Filed by Valeo Equipements Electriques Moteur, Creteil (FR)
PCT Filed Jul. 23, 2018, PCT No. PCT/EP2018/069951
§ 371(c)(1), (2) Date Oct. 5, 2020,
PCT Pub. No. WO2019/020581, PCT Pub. Date Jan. 31, 2019.
Claims priority of application No. 1756988 (FR), filed on Jul. 24, 2017.
Prior Publication US 2021/0399598 A1, Dec. 23, 2021
Int. Cl. H02K 1/27 (2022.01); H02K 1/2786 (2022.01); H02K 15/03 (2006.01); H02K 15/12 (2006.01)
CPC H02K 1/2786 (2013.01) [H02K 15/03 (2013.01); H02K 15/12 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A permanent magnet rotor for an electric motor comprising:
a bell housing comprising an annular wall; and
at least one permanent magnet fixed to the annular wall by adhesive means sited between the annular wall and a rear face of the permanent magnet,
wherein the rear face of the permanent magnet has a fixing zone defined by a radius of curvature which is greater than the radius of curvature of the annular wall, said fixing zone thus contributing to forming a cavity for accepting said adhesive means, and
wherein the ratio between the radius of curvature of the surface delimited by the fixing zone and the radius of curvature of the annular wall is comprised between 1.1 and 4.2.