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公开(公告)号：US20180301263A1
公开(公告)日：2018-10-18
申请号：US15767413
申请日：2016-10-20
摘要： A linear electromagnetic actuator has a stroke c, with at least one stable position in one of the ends of the stroke, and includes: an armature made of a soft magnetic material, the armature being movable in an axial direction Y and having a length Hm in the direction Y, the armature having a symmetrical shape at the axis Y, and a stationary stator yoke made of a soft magnetic material and holding at least one electric coil. The actuator also includes at least one stationary permanent magnet that is magnetized along a transverse axis X perpendicular to the direction Y. The magnet is transversely placed between the movable armature and the electric coil. The magnet has a length Ha in the direction Y. The stationary yoke and the movable armature define therebetween at least one axial air gap. Ha+c is of the order of magnitude of Hm. The length Hm is such that 0.9×(Ha+c)
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公开(公告)号：US20210175777A1
公开(公告)日：2021-06-10
申请号：US16770306
申请日：2018-12-05
摘要： The disclosure relates to a valve for controlling the circulation of a fluid, having a valve body and a housing containing an electric motor composed of a stator and of a rotor, a needle, a sealing bell and also a fixed screw or a fixed nut. The fixed screw or the fixed nut is secured to the valve body, and the stator is secured to the valve body via the housing. The sealing bell is positioned at the interface between the rotor and the stator in such a way that the screw/nut, the rotor and the needle are within this bell and submerged in the fluid, the stator being isolated from the fluid. Furthermore, the rotor has the function of a nut or of a screw, and has a helical movement imposed by the fixed screw or the fixed nut and drives the needle axially. The motor is a brushless polyphase motor with radial principal magnetic flux.
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3.发明申请公开(公告)号：US20160352168A1
公开(公告)日：2016-12-01
申请号：US15115008
申请日：2015-01-29
IPC分类号： H02K1/34 , H02K11/215 , H02K33/12
CPC分类号： H02K1/34 , H02K11/215 , H02K33/12 , H02K33/16
摘要： A linear electromagnetic actuator includes a stator excited by at least one electric coil arranged around an axis of symmetry and two ferromagnetic stator poles positioned axially on either side of the coil, as well as at least two independent moving members, each of the moving members being formed of a ferromagnetic material, where the linear electromagnetic actuator includes at least three magnetized poles arranged inside the coil, with respectively a first magnetized pole positioned in the vicinity of the median plane separating the two moving members and containing the axis of the coil, and a second and third magnetized pole arranged laterally on either side of the moving members, between the moving members and the coil.
摘要翻译： 线性电磁致动器包括由围绕对称轴线布置的至少一个电线圈激励的定子和轴向位于线圈两侧的两个铁磁定子极以及至少两个独立的移动构件，每个移动构件是 由铁磁材料形成，其中线性电磁致动器包括布置在线圈内的至少三个磁化极，分别具有位于分离两个移动构件并包含线圈的轴线的中间平面附近的第一磁化极，以及 第二和第三磁化极，横向地位于移动构件的任一侧，位于移动构件和线圈之间。
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