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    • 1. 发明申请
    • EXTERNAL-ROTOR MOTOR HAVING A STATIONARY BEARING SHAFT
    • 具有静止轴承的外部电机
    • US20070278868A1
    • 2007-12-06
    • US11276351
    • 2006-02-24
    • Matthias NICKEL-JETTERHermann RappeneckerSiegfried Schreiner
    • Matthias NICKEL-JETTERHermann RappeneckerSiegfried Schreiner
    • H02K37/10
    • H02K5/1737H02K7/1016H02K21/22
    • An improved drum motor, preferably electronically commutated, features a unitary stationary central shaft (18) supporting a stationary inner stator (52), and an external rotor (49), including permanent magnets (54), secured to an inner surface of a generally cylindrical rotatable casing part (18). This permits variable speed operation while avoiding any need for an internal gear linkage. Safety is improved by making sealing plates (76, 78) at respective axial ends of the casing (14) stationary, and providing an annular peripheral seal (90) around each sealing plate. Respective rolling bearings (24, 44) near each end of the casing (14) facilitate rotation of the external rotor (49) relative to the stator (52), and a clamping arrangement (30) minimizes noise from the bearings.
    • 改进的鼓式电动机,优选地电子换向,其特征在于支撑固定内部定子(52)的整体式固定中心轴(18)和包括永磁体(54)的外部转子(49),固定在一般的内表面 圆柱形可旋转外壳部分(18)。 这允许变速操作,同时避免内部齿轮联动的任何需要。 通过在壳体(14)的相应轴向端部处的密封板(76,78)固定而提供安全性,并且围绕每个密封板提供环形周边密封件(90)。 在壳体(14)的每个端部附近的相应的滚动轴承(24,44)有助于外部转子(49)相对于定子(52)的旋转,并且夹紧装置(30)使得轴承的噪声最小化。