US 12,323,006 B2
Magnet pole with a plurality of single magnets having a variable cross-section
Vasile Mihaila, Figeac (FR)
Assigned to Whylot SAS, Cambes (FR)
Appl. No. 17/922,932
Filed by Whylot SAS, Cambes (FR)
PCT Filed May 12, 2021, PCT No. PCT/IB2021/054057
§ 371(c)(1), (2) Date Nov. 2, 2022,
PCT Pub. No. WO2021/234512, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. FR2004993 (FR), filed on May 19, 2020.
Prior Publication US 2023/0223806 A1, Jul. 13, 2023
Int. Cl. H02K 1/2795 (2022.01); H01F 7/02 (2006.01); H01F 41/02 (2006.01); H02K 1/2793 (2022.01); H02K 1/28 (2006.01); H02K 15/03 (2025.01); H02K 21/24 (2006.01)
CPC H02K 1/2795 (2022.01) [H01F 7/0221 (2013.01); H01F 41/0253 (2013.01); H02K 1/2793 (2013.01); H02K 1/28 (2013.01); H02K 15/03 (2013.01); H02K 21/24 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A fabrication method of at least one magnet pole (10) from a magnet block forming a blank, wherein
said at least one magnet pole is formed by a plurality of elongated single magnets (4, 4a to 4g) grouped to form a bundle, oriented magnetically longitudinally and extending parallel between a front face and a rear face of the magnet pole (10) and being connected to one another, characterized in that a first group of single magnets (4) has a larger cross-section or a cross-section of a different shape than at least one second group of at least one single magnet (4a to 4g), the single magnets (4) of the first group being more numerous than said at least one single magnet (4a to 4g) of said at least one second group; wherein
the magnet pole (10) must have a predetermined cross-section, characterized in that the blank is cut along several directions to delimit, on one hand, single magnets (4) of the first group and, on the other hand, at least one single magnet (4a to 4g) of said at least one second group, the single magnets (4, 4a to 4g) being connected to one another by adhesive, at least locally, optionally with the interposition of a mesh structure between the single magnets (4, 4a to 4g) to form an assembly of unit magnets forming a magnet pole (10); in which
the blank is previously configured to the proper dimensions and cut into single magnets (4) of the first group and into at least one single magnet (4a to 4g) of the second group so that the assembly of single magnets (4, 4a to 4g) has a cross-section corresponding to a cross-section of the front or rear face of the magnet pole (10), being smaller than one of the front or the rear face of the magnet pole (10) by less than 15%.