发明授权
- 专利标题： Heat dissipation fan with a shaft positioned to prevent chafing between the fan blades and the bearing
- 专利标题（中）： 散热风扇带有轴，用于防止风扇叶片和轴承之间的擦伤
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申请号： US09430375申请日： 1999-10-29
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公开(公告)号： US06183221B2公开(公告)日： 2001-02-06
- 发明人: Hsin-Mao Hsieh
- 申请人： Hsin-Mao Hsieh
- 主分类号： F04B1703
- IPC分类号： F04B1703
摘要：
A heat dissipation fan as disclosed includes a heat dissipation fan blade, a self-lubricating bearing, a stator having an electrical circuit plate and a casing. The heat dissipation fan blade includes a shaft extending therefrom. The shaft has a rounded free end that and contains a neck to seat a locking plate therein. The casing has a collar extending therefrom to hold the stator in place. The collar contains a recess to securely receive the self-lubricating bearing and forms an internal shoulder to restrain and support the locking plate and the self-lubricating bearing. The locking plate is round and contains a through hole therein. The through hole has a diameter corresponding to that of the neck in the shaft. The locking plate has multiple slits formed on the periphery of the through hole. A washer is placed in the bottom of the recess and contains a hole with a diameter smaller than the shaft to abut the free end of the shaft.