Brushless motor and production method therefor
    2.
    发明授权
    Brushless motor and production method therefor 失效
    无刷电机及其制作方法

    公开(公告)号:US06700256B2

    公开(公告)日:2004-03-02

    申请号:US09983265

    申请日:2001-10-23

    IPC分类号: H02K708

    摘要: In a brushless motor, a projected annular portion is formed in a central portion of a rotor frame and the projected annular portion has a bore that includes a small-bore portion and a large-bore portion. A length L1 of the small-bore portion is in a range of D×0.05≦L1≦D×0.20, where D represents the diameter of the shaft. An axial length L2 of the projected annular portion is arranged to satisfy L2≧L1×2. Thus, the brushless motor realizes a small and thin construction and has a high deflection precision as well as high productivity.

    摘要翻译: 在无刷电动机中,突出的环形部分形成在转子框架的中心部分中,并且突出的环形部分具有包括小孔部分和大孔部分的孔。 小孔部分的长度L1在Dx0.05 <= L1 <= Dx0.20的范围内,其中D表示轴的直径。 突出环形部分的轴向长度L2被设置为满足L2> = L1x2。 因此,无刷电动机实现了小而薄的结构,并且具有高的挠曲精度以及高的生产率。