H - Electricity – 02 – K
Patent
H - Electricity
02
K
H02K 37/14 (2006.01) H02K 16/00 (2006.01) H02K 16/02 (2006.01) H02K 16/04 (2006.01)
Patent
CA 2374535
The invention concerns a step motor with two magnetic induction coils (9, 10) and a rotor (1) consisting of a permanent magnet with n poles, the magnetic yoke consisting of two parallel planar plates (2, 3) linked by two spacers (7, 8) around which said coils (9, 10) are arranged, two coaxial orifices (13, 14) provided in said plates (2, 3) defining a space with cylindrical appearance wherein the rotor (1) is placed, each plate (2, 3) including teeth (5, 6) oriented substantially perpendicular to its plane, in the direction of the other plate (3, 2), arranged at the periphery of the orifices (13, 14) through which the rotor (1) passes, the teeth (5, 6) coming from the two plates (2, 3) interlocking with each other to form a cage wherein the rotor is housed (1). The invention is characterised in that one of the plates (3) comprises n/2 teeth, whereas the second one (2) comprises only n/2-1 teeth, the magnetic circuits associated with each coil (9, 10) comprising likewise n/2 and n/2-1 teeth respectively.
Moteur pas à pas à deux bobines d'induction (9, 10) magnétique et un rotor (1) constitué d'un aimant permanent à n pôles, la culasse magnétique étant constituée de deux plaques planes parallèles (2, 3) reliées par deux entretoises (7, 8) autour desquelles sont disposées lesdites bobines (9, 10), deux orifices coaxiaux (13, 14) pratiqués dans lesdites plaques (2, 3) délimitant un espace d'allures cylindriques dans lequel est placé le rotor (1), chaque plaque (2, 3) comportant des dents (5, 6) orientées sensiblement perpendiculairement à son plan, en direction de l'autre plaque (3, 2), disposées en prériphérie des orifices (13, 14) de passage du rotor (1), les dents (5, 6) issues des deux plaques (2, 3) s'interpénétrant pour former une cage dans laquelle est logé le rotor (1), caractérisé en ce que l'une des plaques (3) comporte n/2 dents, alors que la seconde (2) n'en comporte que n/2- 1, les circuits magnétiques associés à chaque bobine (9, 10) comportant également respectivement n/2 et n/2-1 dents.
Armiroli Jean
Goubely Aime
Eaton
Mcfadden Fincham
LandOfFree
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