H - Electricity – 02 – K
Patent
H - Electricity
02
K
H02K 21/24 (2006.01) H01F 7/14 (2006.01)
Patent
CA 2347124
The invention concerns a rotary magnetic actuator comprising a stator (1) with P pairs of poles, including a stator magnetic circuit having pole shoes (7, 8) and at least an electric excitation coil (3), and a rotor (2) including a rotor magnetic circuit (9) located opposite said pole shoes of the stator magnetic circuit and integral with an axial shaft, the rotor magnetic circuit comprising a multi-polar annular magnet (10) with P pairs of poles, wherein said stator magnetic circuit has a central core (5) whereon the excitation coil (3) is wound. The core and the excitation coil have a non-circular cross-section with a polygonal shape taking up substantially the whole surface unoccupied by the rest of the stator magnetic circuit. The invention is particularly applicable in motor vehicles.
L'invention concerne un actionneur magnétique rotatif du type comportant un stator (1) à P paires de pôles, comprenant un circuit magnétique statorique présentant des épanouissements polaires (7, 8) et au moins une bobine électrique (3) d'excitation, et un rotor (2) comprenant un circuit magnétique (9) rotorique qui est situé en regard desdits épanouissements polaires du circuit magnétique statorique et qui est solidaire d'un arbre axial, le circuit magnétique rotorique comportant un aimant annulaire (10) multipolaire à P paires de pôles, dans lequel ledit circuit magnétique statorique présente un noyau central (5) sur lequel la bobine d'excitation (3) est bobinée. Le noyau et la bobine d'excitation présentent une section transversale non circulaire en forme de polygone occupant sensiblement toute la surface laissée libre par le reste du circuit magnétique statorique. Application notamment au domain de l'automobile.
Bereskin & Parr
Sagem S.a.
Veyne Stephane
LandOfFree
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