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公开(公告)号:US5699031A
公开(公告)日:1997-12-16
申请号:US569077
申请日:1995-12-04
申请人: Marco Covelli , Enzo Dandolo
发明人: Marco Covelli , Enzo Dandolo
CPC分类号: H02K26/00
摘要: Electromagnetic actuator with rotary core, comprising, housed in a casing: a magnetic yoke, a pair of fixed adjacent coils alternately energized, and a rotating element with a magnetic core; the yoke, the coils and the core having a common axis coinciding with that of the actuator, and the core being positioned between and/or within said coils, so as to close alternative circuits of magnetic flux, generated in the yoke by either one of the coils, between opposite axial pole pieces and central radial pole pieces of the yoke. In the actuator: the yoke (2) comprises a single radial pole piece (11) common to both coils (3, 4) and two sets of axial end pole pieces (13, 14). The core (7) comprises a continuous central part magnetically cooperating with the radial piece (11) of the yoke (2) and the two opposite sets of pole pieces (15, 16) axially projecting from the central part and magnetically cooperating with the sets of axial pole pieces (13, 14) of the yoke (2); in the two sets of pole pieces (15, 16) of the core (7), or alternatively in the two sets (13, 14) of the yoke (2), the pole pieces of one set are offset in respect of the pole pieces of the other set.
摘要翻译: PCT No.PCT / EP94 / 01785 Sec。 371 1995年12月4日第 102(e)1995年12月4日,PCT PCT 1994年6月1日PCT公布。 第WO94 / 29945号公报 日期1994年12月22日具有旋转磁芯的电磁致动器,包括:容纳在壳体中的磁轭,一对固定的相邻线圈交替激励,以及具有磁芯的旋转元件; 轭,线圈和芯具有与致动器的公共轴线重合的公共轴线,并且铁心位于所述线圈之间和/或内部,以便通过以下任何一个来闭合在磁轭中产生的磁通量的替代电路: 线圈,在相对的轴向极片和轭的中心径向极片之间。 在致动器中:轭架(2)包括两个线圈(3,4)共同的单个径向极片(11)和两组轴向端极片(13,14)。 芯部(7)包括与轭(2)的径向片(11)磁性配合的连续中心部分和从中心部分轴向突出并与组合磁力配合的两组相对的极片(15,16) (2)的轴向极片(13,14); 在芯体(7)的两组极片(15,16)中,或者在磁轭(2)的两组(13,14)中,一组的极片相对于磁极偏移 另一组的碎片。