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公开(公告)号:US5924800A
公开(公告)日:1999-07-20
申请号:US800534
申请日:1997-02-18
申请人: Rikuro Obara , Motoharu Akiyama , Kenichi Usuda
发明人: Rikuro Obara , Motoharu Akiyama , Kenichi Usuda
IPC分类号: F04D29/04 , F04D29/059 , F16C33/41 , F16C33/42
CPC分类号: F04D29/059 , F16C33/41 , F16C33/425 , F16C33/427 , F16C19/06 , F16C2300/12
摘要: A ball bearing for a small size fan for supporting an axis of rotation of an impeller is formed of four or five balls (21), a crown-shaped cage (25), an inner ring (22), and an outer ring (23). By using an optimized number of the balls (21) under the working condition of a ball bearing for a small size fan, structually useless portions are eliminated. Further, by adopting the crown-shaped cage (25), reduction of the cost and the friction torque is attained, and a ball bearing having necessary and sufficinet durability is provided. By incorporating the ball bearing in a small size fan, reduction of the cost, simplification of the structure, and reduction of the electric power consumption of the small size fan are facilitated, thereby improving the commerciality as a small size fan.
摘要翻译: 用于支撑叶轮旋转轴线的小尺寸风扇的滚珠轴承由四个或五个滚珠(21),冠形保持架(25),内圈(22)和外圈(23) )。 通过在小型风扇的滚珠轴承的工作状态下使用优化数量的滚珠(21),消除了结构上无用的部分。 此外,通过采用冠形保持架(25),可以实现成本的降低和摩擦转矩的提高,提供必要且足够的耐久性的滚珠轴承。 通过将球轴承结合在小型风扇中,便于小尺寸风扇的成本降低,结构简化和电力消耗的降低,从而提高了作为小型风扇的商业性。