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发明授权
CN1881751B 轴向空隙型电动机 有权

轴向空隙型电动机
摘要：
本发明提供一种轴向空隙型电动机的构造，其将2个转子固定在旋转轴上，在相同的旋转轴上具有2个径向球轴承，并且，具有向旋转轴方向预压该径向球轴承的内圈的预压单元。其设置有利用2个转子的永久磁铁的磁力的不同，向轴向预压轴承的内圈的磁力预压单元。并且，磁力预压单元通过由形成各个转子所具有的永久磁铁(8b、9b)的充磁量的差构成，或由定子(2)与永久磁铁(8b1)的空隙(L1)和定子(2)与永久磁铁(9b1)的空隙(L2)的距离差构成，或由各个转子所具有的永久磁铁(8b1)和永久磁铁(962)的旋转轴方向的厚度差构成。
摘要（英）：

A magnetic pre-pressurizing section for pre-pressurizing the inner ring of the bearing in the axial direction by a difference of magnetic forces of permanent magnets of the two rotors is arranged. The magnetic pre-pressurizing section is constructed by a difference of a magnetizing amount for forming permanent magnets 8b, 9b arranged in the respective rotors. The magnetic pre-pressurizing sectionis also constructed by a difference of distances of an air gap L1 of a stator 2 and a permanent magnet 8b1, and an air gap L2 of the stator 2 and a permanent magnet 9b1. The magnetic pre-pressurizingsection is also constructed by a difference of thicknesses of the rotating axis direction of a permanent magnet 8b1 and a permanent magnet 9b2 arranged in the respective rotors.

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