Single-phase brushless motor
    7.
    发明授权

    公开(公告)号:US10110076B2

    公开(公告)日:2018-10-23

    申请号:US14455160

    申请日:2014-08-08

    摘要: A single-phase brushless motor includes a stator and a rotor rotatable with respect to the stator. The rotor includes a number of permanent magnetic poles. The stator includes a stator core and a winding wound on the stator core. The stator core includes an outer annular portion, an inner annular portion, and connecting portions connecting the inner and outer annular portions. The winding is wound around the connecting portions. The rotor is received in the inner annular portion. The inner annular portion and the rotor form a substantially uniform air gap. A recess is formed in an inner surface of a part of the inner annular portion between each pair of adjacent connecting portions. A center of each recess deviates from a center line of symmetry of the corresponding pair of connecting portions.

    Driving device and relay
    9.
    发明授权
    Driving device and relay 有权
    驱动装置和继电器

    公开(公告)号:US08773226B2

    公开(公告)日:2014-07-08

    申请号:US13780825

    申请日:2013-02-28

    IPC分类号: H01H67/02

    摘要: A relay has a driving device that includes a magnet portion, two electromagnets, a yoke portion fixed to the above elements, and a rocking armature. The magnet portion includes a ferrite permanent magnet polarized in a direction perpendicular to the yoke portion and a bearing surface facing way from the yoke portion. Each electromagnet includes an iron core fixed to the yoke portion and a coil wound thereon. The two iron cores are arranged at opposite sides of the magnet portion. The rocking armature includes two arms connected to each other with an included angle formed therebetween and a convex joint of the two arms. The convex joint abuts against the bearing surface and the rocking armature pivots about the convex joint between a first position and a second position in which the rocking armature contacts a respective one of the iron cores.

    摘要翻译: 继电器具有驱动装置,其包括磁体部分,两个电磁体,固定到上述元件的磁轭部分和摆动电枢。 磁体部分包括在垂直于磁轭部分的方向上偏振的铁氧体永磁体和与轭部分相对的支承表面。 每个电磁体包括固定到磁轭部分的铁芯和缠绕在其上的线圈。 两个铁芯布置在磁体部分的相对侧。 摆动电枢包括彼此连接的两个臂,其间形成有夹角并且两个臂的凸接合。 凸接头抵靠支承面,摇动衔铁在第一位置与第二位置之间绕凸接头枢转,在该第一位置和第二位置之间,摆动电枢与相应的一个铁芯接触。

    Drive circuit for a permanent magnet motor

    公开(公告)号:US10211762B2

    公开(公告)日:2019-02-19

    申请号:US14822292

    申请日:2015-08-10

    摘要: A drive circuit for an electric motor having a wound stator and a permanent magnet rotor, includes a controllable bidirectional AC switch connected in series with a stator winding between two terminals for connecting to an AC power supply. First and second position sensors detect the position of magnetic poles of the rotor. A voltage regulating circuit is connected between the two terminals and the controllable bidirectional AC switch and configured to supply power to the first sensor during the positive cycle and to the second position sensor during the negative cycle of the AC power supply such that the controllable bidirectional AC switch is switched between a conductive state and a non-conductive state in a preset manner, thus enabling the stator to rotate the rotor in only one predetermined direction during start-up.