公开(公告)号：US08508093B2

公开(公告)日：2013-08-13

申请号：US13236615

申请日：2011-09-19

申请人： Hong-Tao Wu ,  Yong-Kang Zhang ,  Yung-Ping Lin

发明人： Hong-Tao Wu ,  Yong-Kang Zhang ,  Yung-Ping Lin

IPC分类号： H02K21/12

CPC分类号： F04D29/329 ,  F04D25/064 ,  F04D25/0646

摘要： An exemplary heat dissipation fan includes a rotor and a stator. The stator includes a stator core. The rotor is rotatably mounted around the stator. The rotor includes a hub and a magnet ring received in the hub. The hub includes a top wall and a peripheral side wall depending from the top wall. The magnet ring is attached to the side wall and surrounding the stator. The magnet ring has a larger thickness as measured in a radial direction at a first end which is far away from the top wall than a second end which is adjacent to top wall, such that an attracting force formed between the first end of the magnet ring and the stator core is larger than that formed between the second end of the magnet ring and the stator core.

摘要翻译： 示例性的散热风扇包括转子和定子。 定子包括定子芯。 转子可旋转地安装在定子周围。 转子包括容纳在轮毂中的轮毂和磁环。 轮毂包括从顶壁垂下的顶壁和周边侧壁。 磁环附着在侧壁上并围绕定子。 磁体环具有比在与顶壁相邻的第二端远离顶壁的第一端处沿径向测量的厚度，使得在磁环的第一端之间形成的吸引力 并且定子铁心大于在磁环和定子铁芯的第二端之间形成的铁心。