Objective lens driving device with multipole magnet
    1.
    发明授权
    Objective lens driving device with multipole magnet 失效
    具有多极磁体的物镜驱动装置

    公开(公告)号:US4792935A

    公开(公告)日:1988-12-20

    申请号:US945089

    申请日:1986-12-22

    IPC分类号: G11B7/09 H02K41/035 G11B7/00

    摘要: An objective lens driving device with a multipole magnet which includes a cylindrical yoke with an E-shaped cross section for defining an annular gap between the central yoke section and the outer cyclindrical yoke section; four rectangular tracking coils attached to the side of a focusing coil such that a pair of vertical coil sides of each tracking coil are parallel to a supporting shaft; and a pair of circular multipole magnets disposed within the gap between the central and outer cylindrical yoke sections and each having at least three magnet sections, with opposite end magnet sections having a polarity opposite to that of the central magnet section so that the vertical coil sides interlink with magnetic fluxes having opposite directions to each other, whereby tracking forces act upon the vertical coil sides in the same direction.

    摘要翻译: 一种具有多极磁体的物镜驱动装置,其包括具有E形横截面的圆柱形磁轭,用于限定中心磁轭部分和外旋转磁轭部分之间的环形间隙; 四个矩形跟踪线圈附接到聚焦线圈的侧面,使得每个跟踪线圈的一对垂直线圈侧平行于支撑轴; 以及一对圆形多极磁体,其设置在中央和外部圆柱形磁轭部分之间的间隙内,并且每个具有至少三个磁体部分,相对的端部磁体部分具有与中心磁体部分的极性相反的极性,使得垂直线圈侧 与彼此具有相反方向的磁通相互连接,由此跟踪力沿相同方向作用在垂直线圈侧。

    Motor for an electric power steering assembly
    2.
    发明授权
    Motor for an electric power steering assembly 有权
    电动转向组件电机

    公开(公告)号:US06388355B2

    公开(公告)日:2002-05-14

    申请号:US09895269

    申请日:2001-07-02

    IPC分类号: H02K300

    CPC分类号: B62D5/0403 H02K3/28 H02K23/30

    摘要: A motor for an electric power steering assembly includes a yoke, a multipolar magnetic field portion composed of at least four poles secured to the inner wall of the yoke, a shaft disposed within the yoke so as to be able to rotate freely, an armature secured to the shaft having a winding constructed by winding wiring into an even number of slots formed on the outer circumferential surface of a core so as to extend in the axial direction thereof, a commutator comprising a plurality of segments secured to an end portion of the shaft; and a plurality of brushes contacting the surface of the commutator.

    摘要翻译: 一种用于电动助力转向组件的电动机包括一个磁轭,由固定在磁轭内壁上的至少四个磁极组成的多极磁场部分,一个设置在磁轭内的轴,以便能够自由旋转, 具有绕组构造的轴,所述绕组通过将布线卷绕成形成在芯的外周面上的偶数个槽而沿其轴向方向延伸,换向器包括固定到所述轴的端部的多个段 ; 以及与换向器的表面接触的多个电刷。

    AC generator for vehicles
    4.
    发明授权
    AC generator for vehicles 失效
    车用交流发电机

    公开(公告)号:US5343105A

    公开(公告)日:1994-08-30

    申请号:US11119

    申请日:1993-01-29

    CPC分类号: H02K19/22 H02K3/28

    摘要: An AC generator for use in motor vehicles which is high in power generation and cooling efficiency. The magnetic circuit is so constructed that its number of slots per each pole and each phase is 0.5 and that its winding system is of concentrated winding. With such a construction, the total length of its stator coils can be reduced compared with that of the conventional machine. In addition, its output and efficiency are improved by the reduced temperature rise and a reduction in its structure and cost can be achieved by the reduced consumption of copper.

    摘要翻译: 用于机动车辆的交流发电机,发电和冷却效率高。 磁路的结构使得每个极和每相的槽数为0.5,其绕组系统为集中绕组。 利用这种结构,与常规机器相比,其定子线圈的总长度可以减小。 另外,通过降低温度上升来提高其输出和效率,并且可以通过减少铜的消耗来实现其结构和成本的降低。

    Bed for electrical discharge machining apparatus
    6.
    发明授权
    Bed for electrical discharge machining apparatus 失效
    放电加工机床

    公开(公告)号:US4631382A

    公开(公告)日:1986-12-23

    申请号:US651568

    申请日:1984-09-18

    CPC分类号: B23Q1/01 B23H11/00 F16M5/00

    摘要: An electrical discharge machining apparatus having an improved bed which provides improved control over the gap between a machining head and a workpiece by reducing the amount of deformation produced in the bed when the table and saddle are moved. The bed is constituted by an upper plate and side plates, with saddle guide rails being disposed on the upper plate, a saddle movably mounted on the saddle guide rails, table guide rails mounted on the saddle, and a workpiece-supporting table movably mounted on the saddle guide rails. In accordance with one embodiment of the invention, the saddle guide rails are positioned at the edges of the upper plate, directly above the side plates of the bed. In another embodiment, reinforcing members are provided under the upper plate, extending parallel to and directly under respective ones of guide rails.

    摘要翻译: 一种具有改进床的放电加工装置,其通过减小床和鞍座移动时在床中产生的变形量来提高对加工头和工件之间的间隙的控制。 床由上板和侧板构成,鞍形导轨设置在上板上,鞍座可移动地安装在鞍座导轨上,安装在鞍座上的工作台导轨和可移动地安装在鞍座导轨上的工件支撑台 鞍座导轨。 根据本发明的一个实施例,鞍形导轨位于上板的边缘,正好位于床的侧板上方。 在另一个实施例中,加强构件设置在上板下方,平行于和直接位于相应的导轨下方。

    Motor for an electric power steering assembly
    7.
    发明授权
    Motor for an electric power steering assembly 有权
    电动转向组件电机

    公开(公告)号:US06388354B1

    公开(公告)日:2002-05-14

    申请号:US09313344

    申请日:1999-05-18

    IPC分类号: H02K300

    CPC分类号: B62D5/0403 H02K3/28 H02K23/30

    摘要: A motor for an electric power steering assembly includes a yoke, a multi-polar magnetic field portion composed of at least four poles secured to the inner wall of the yoke, a shaft disposed within the yoke so as to be able to rotate freely, an armature secured to the shaft having a winding constructed by winding wiring into an even number of slots formed on the outer circumferential surface of a core so as to extend in the axial direction thereof, a commutator including a plurality of segments secured to an end portion of the shaft; and a plurality of brushes contacting the surface of the commutator.

    摘要翻译: 一种用于电动助力转向组件的电动机包括一个磁轭,由固定在磁轭内壁上的至少四个磁极组成的多极磁场部分,设置在磁轭内以便能够自由旋转的轴, 电枢固定到轴上,该绕组具有通过将布线卷绕成形成在芯的外圆周表面上的偶数个槽中而沿其轴向方向延伸的绕组构成的绕组,该换向器包括固定到 轴; 以及与换向器的表面接触的多个电刷。

    Encased electric motor employing gas as heat dissipating means
    10.
    发明授权
    Encased electric motor employing gas as heat dissipating means 失效
    采用气体作为散热装置的电动马达

    公开(公告)号:US4486677A

    公开(公告)日:1984-12-04

    申请号:US490414

    申请日:1983-05-02

    IPC分类号: H02K5/128 H02K9/08

    CPC分类号: H02K9/08 H02K5/128

    摘要: In an encased electric motor within a casing, an electrically insulating varnish is applied by vacuum impregnation to the inside surfaces of the casing and to the outer surface of the stator of the motor. The remaining empty space within the casing is filled with a heat conducting gas mixture comprising approximately 60-90% by volume of helium, with the remaining percentage being an electrically insulating gas having better electrically insulating properties than helium, such as sulphur hexafluoride. This encased motor is much lighter than conventional encased motors in which the stator enclosure is filled with a heat conducting resin potting compound and avoids warping damage which frequently occurs in conventional encased motors due to thermal expansion of the heat conducting resin potting compound.

    摘要翻译: 在壳体内的电动马达中,通过真空浸渍将电绝缘清漆施加到壳体的内表面和电动机的定子的外表面。 壳体内的剩余空间填充有包含约60-90体积%的氦的导热气体混合物,其余百分比是具有比氦更好的电绝缘性能的电绝缘气体,例如六氟化硫。 这种封装的电动机比常规封装的电动机要轻得多,其中定子外壳上装有导热树脂封装复合材料,并且避免了由于导热树脂封装材料的热膨胀而在传统封装的电动机中频繁发生的翘曲损坏。