Step motor
    1.
    发明授权

    公开(公告)号:US10516324B2

    公开(公告)日:2019-12-24

    申请号:US15291476

    申请日:2016-10-12

    摘要: A step motor includes a stator and a rotor. The stator includes a stator core and stator windings. The stator core includes a ring shaped yoke and a plurality of teeth extending inwardly from the ring shaped yoke. The rotor is rotatably mounted with respect to the stator. The rotor includes a permanent magnet member surrounded by the plurality of teeth. The stator windings are wound around the plurality of teeth to form a plurality of stator poles. The stator core are formed from a core strip with High magnetic conductive, the core strip are bent to enable opposite ends of the core strip to be connected with each other. The step motor of the present invention has a simplified structure and enhanced efficiency.

    Motor driving device and application apparatus

    公开(公告)号:US10230316B2

    公开(公告)日:2019-03-12

    申请号:US15817967

    申请日:2017-11-20

    IPC分类号: H02P6/14 H02P5/74 H02P25/03

    摘要: A motor driving device for brushless direct current motors and an application apparatus thereof are provided. The motor driving device includes an inverter, a plurality of motor branches, and a microprocessor. The inverter includes a plurality of semiconductor switches to output an alternating current power via a first output terminal and a second output terminal. The plurality of motor branches are connected in parallel between the first output terminal and the second output terminal of the inverter, and each of the plurality of motor branches comprising a motor and a controllable bidirectional alternating current switch connected in series. The microprocessor controls a conduction manner of the semiconductor switches in the inverter, and whether to turn of the controllable bidirectional alternating current switch in each of the plurality of motor branches.

    Single phase brushless motor and power tool utilizing same

    公开(公告)号:US10199886B2

    公开(公告)日:2019-02-05

    申请号:US15254379

    申请日:2016-09-01

    摘要: A single phase brushless motor and a power tool are provided. The single phase brushless motor includes a stator and a rotor. The stator includes a stator core and windings wound around the stator core. The stator core includes a yoke and at least two teeth. The tooth includes a tooth body and a tooth tip. The tooth tip includes first and second pole shoes. The two pole shoes of each tooth are symmetrical about a center line of the tooth body. Each tooth defines a positioning groove facing the rotor between the two pole shoes. Pole shoes of adjacent two of the at least two teeth are spaced apart by a slot opening. A width of the positioning groove is greater than a width of the slot opening. The peak value of the cogging torque of the motor is increased, and the motor has a large startup torque.

    Single phase brushless motor
    5.
    发明授权

    公开(公告)号:US10110102B2

    公开(公告)日:2018-10-23

    申请号:US14965303

    申请日:2015-12-10

    摘要: A single phase brushless motor includes a stator and a rotor. The stator includes a stator core and stator windings wound on the stator core. The stator core includes a yoke portion, and first and second pole portions extending inwardly from the yoke portion. An end surface of the first pole portion includes a first arc surface having a first groove. An end surface of the second pole portion includes a second arc surface having a second groove. The first and second arc surfaces are opposed to each other and define a receiving space therebetween. The rotor includes a rotary shaft and permanent magnetic poles fixed to the rotary shaft. The permanent magnetic poles are received in the receiving space. A substantially uniform gap is formed between the first arc surface and the second arc surface and the permanent magnetic poles.

    Permanent magnet rotor and electric motor incorporating the rotor
    8.
    发明授权
    Permanent magnet rotor and electric motor incorporating the rotor 有权
    永磁转子和电机并入转子

    公开(公告)号:US09225209B2

    公开(公告)日:2015-12-29

    申请号:US13712951

    申请日:2012-12-12

    IPC分类号: H02K1/27 H02K1/28

    摘要: A permanent magnet rotor includes a shaft, a rotor core fixed to the shaft, and multiple magnet sets. The rotor core has multiple groove sets for receiving the magnet sets. Each groove set has two grooves spaced apart by a first section of the rotor core. The first section has a width gradually decreasing from a radially inner end to a radially outer end. Each groove has a width gradually increasing from a radially inner end to a radially outer end. Each magnet set includes two magnets respectively received in the grooves of a respective groove set. The magnets of a magnet set are magnetized in a same direction, and every two adjacent magnet sets are magnetized in contrary directions creating multiple magnetic poles. The number of magnetic poles is equal to the number of magnet sets.

    摘要翻译: 永磁转子包括轴,固定在轴上的转子芯和多个磁体组。 转子芯具有用于接收磁体组的多个凹槽组。 每个凹槽组具有由转子芯的第一部分间隔开的两个凹槽。 第一部分具有从径向内端到径向外端逐渐减小的宽度。 每个槽的宽度从径向内端逐渐增加到径向外端。 每个磁体组包括分别容纳在相应凹槽组的凹槽中的两个磁体。 磁体组的磁体沿相同的方向被磁化,并且每两个相邻的磁体组在相反的方向上磁化,产生多个磁极。 磁极数量等于磁铁组的数量。

    Solenoid
    9.
    发明授权
    Solenoid 有权
    电磁阀

    公开(公告)号:US08866349B2

    公开(公告)日:2014-10-21

    申请号:US13626543

    申请日:2012-09-25

    IPC分类号: H02K41/00 H01F7/16 H01H3/28

    CPC分类号: H01H3/28 H01F7/1615

    摘要: A solenoid includes a stationary member, a movable member being movable relative to the stationary member and spring disposed between the stationary member and the movable member. The stationary member includes a housing with an end wall and a side wall, a first permanent magnet attached to the end wall, a second permanent magnet attached to the side wall and a magnetic flux concentrator configured to concentrate a magnetic field generated by the second permanent magnet with a magnetic field generated by the first permanent magnet. The movable member includes a head inserted into the housing. The head is made of magnetically conductive material. The stationary member further includes a coil surrounding the head of the movable member. When the coil receives a pulse current, the movable member is driven from an extended/retracted position to a retracted/extended position.

    摘要翻译: 螺线管包括固定构件,可移动构件可相对于静止构件运动,弹簧设置在静止构件和可动构件之间。 固定构件包括具有端壁和侧壁的壳体,附接到端壁的第一永久磁体,附接到侧壁的第二永磁体和被配置为集中由第二永磁体产生的磁场的磁通集中器 具有由第一永久磁铁产生的磁场的磁体。 可动构件包括插入壳体中的头部。 磁头由导磁材料制成。 固定构件还包括围绕可移动构件的头部的线圈。 当线圈接收到脉冲电流时,可动构件从延伸/缩回位置被驱动到缩回/伸出位置。

    Rotary solenoid
    10.
    发明授权
    Rotary solenoid 有权
    旋转电磁铁

    公开(公告)号:US08633791B2

    公开(公告)日:2014-01-21

    申请号:US13922704

    申请日:2013-06-20

    IPC分类号: H01F7/08

    CPC分类号: H01F7/121 H02K26/00 H02K33/02

    摘要: A rotary solenoid (1) includes a stator (10), a rotor (40), and a torsion spring (50) connected between the stator (10) and the rotor (40). The stator (10) includes an armature (13) having three stator poles (14, 15) cooperatively defining a substantially cylindrical space (18) and a coil (19) wound about one of the stator poles (14). The rotor (40) includes a shaft (42) rotatably assembled to the stator (10) and a rotor core (44) fixed to the shaft (42) and received in the cylindrical space (18). The rotor core (44) has three rotor poles (43) corresponding to the stator poles (14, 15). The rotor (40) stays at a first position under the force of the torsion spring (50) and rotates to a second position under the force of the torsion spring (50) and the magnetic force of stator (10) when the coil (19) is powered.

    摘要翻译: 旋转螺线管(1)包括定子(10),转子(40)和连接在定子(10)和转子(40)之间的扭簧(50)。 定子(10)包括具有三个定子极(14,15)的电枢(13),它们协同地限定一个基本上圆柱形的空间(18)和围绕其中一个定子极(14)缠绕的线圈(19)。 转子(40)包括可旋转地组装到定子(10)的轴(42)和固定到轴(42)并被接收在圆柱形空间(18)中的转子芯体(44)。 转子铁心(44)具有对应于定子极(14,15)的三个转子极(43)。 转子(40)在扭力弹簧(50)的力作用下停留在第一位置,当线圈(19)在扭簧(50)的作用力和定子(10)的磁力下转动到第二位置 )被供电。